diff options
Diffstat (limited to 'drivers/usb')
167 files changed, 19321 insertions, 3305 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index c6c816b7ecb5..dcd49f1e96d0 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -22,6 +22,7 @@ config USB_ARCH_HAS_HCD default y if PCMCIA && !M32R # sl811_cs default y if ARM # SL-811 default y if SUPERH # r8a66597-hcd + default y if MICROBLAZE default PCI # many non-PCI SOC chips embed OHCI @@ -63,6 +64,7 @@ config USB_ARCH_HAS_EHCI config USB tristate "Support for Host-side USB" depends on USB_ARCH_HAS_HCD + select NLS # for UTF-8 strings ---help--- Universal Serial Bus (USB) is a specification for a serial bus subsystem which offers higher speeds and more features than the diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 0a3dc5ece634..19cb7d5480d7 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_USB_ISP116X_HCD) += host/ obj-$(CONFIG_USB_OHCI_HCD) += host/ obj-$(CONFIG_USB_UHCI_HCD) += host/ obj-$(CONFIG_USB_FHCI_HCD) += host/ +obj-$(CONFIG_USB_XHCI_HCD) += host/ obj-$(CONFIG_USB_SL811_HCD) += host/ obj-$(CONFIG_USB_U132_HCD) += host/ obj-$(CONFIG_USB_R8A66597_HCD) += host/ diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c index 9cf9ff69e3e3..d171b563e94c 100644 --- a/drivers/usb/atm/ueagle-atm.c +++ b/drivers/usb/atm/ueagle-atm.c @@ -306,6 +306,7 @@ enum { #define FW_GET_BYTE(p) *((__u8 *) (p)) #define FW_DIR "ueagle-atm/" +#define UEA_FW_NAME_MAX 30 #define NB_MODEM 4 #define BULK_TIMEOUT 300 @@ -1564,9 +1565,9 @@ static void cmvs_file_name(struct uea_softc *sc, char *const cmv_name, int ver) file = cmv_file[sc->modem_index]; strcpy(cmv_name, FW_DIR); - strlcat(cmv_name, file, FIRMWARE_NAME_MAX); + strlcat(cmv_name, file, UEA_FW_NAME_MAX); if (ver == 2) - strlcat(cmv_name, ".v2", FIRMWARE_NAME_MAX); + strlcat(cmv_name, ".v2", UEA_FW_NAME_MAX); } static int request_cmvs_old(struct uea_softc *sc, @@ -1574,7 +1575,7 @@ static int request_cmvs_old(struct uea_softc *sc, { int ret, size; u8 *data; - char cmv_name[FIRMWARE_NAME_MAX]; /* 30 bytes stack variable */ + char cmv_name[UEA_FW_NAME_MAX]; /* 30 bytes stack variable */ cmvs_file_name(sc, cmv_name, 1); ret = request_firmware(fw, cmv_name, &sc->usb_dev->dev); @@ -1608,7 +1609,7 @@ static int request_cmvs(struct uea_softc *sc, int ret, size; u32 crc; u8 *data; - char cmv_name[FIRMWARE_NAME_MAX]; /* 30 bytes stack variable */ + char cmv_name[UEA_FW_NAME_MAX]; /* 30 bytes stack variable */ cmvs_file_name(sc, cmv_name, 2); ret = request_firmware(fw, cmv_name, &sc->usb_dev->dev); diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 7a1164dd1d37..e1f89416ef8c 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -16,7 +16,8 @@ * v0.9 - thorough cleaning, URBification, almost a rewrite * v0.10 - some more cleanups * v0.11 - fixed flow control, read error doesn't stop reads - * v0.12 - added TIOCM ioctls, added break handling, made struct acm kmalloced + * v0.12 - added TIOCM ioctls, added break handling, made struct acm + * kmalloced * v0.13 - added termios, added hangup * v0.14 - sized down struct acm * v0.15 - fixed flow control again - characters could be lost @@ -62,7 +63,7 @@ #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/mutex.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/cdc.h> #include <asm/byteorder.h> @@ -87,7 +88,10 @@ static struct acm *acm_table[ACM_TTY_MINORS]; static DEFINE_MUTEX(open_mutex); -#define ACM_READY(acm) (acm && acm->dev && acm->used) +#define ACM_READY(acm) (acm && acm->dev && acm->port.count) + +static const struct tty_port_operations acm_port_ops = { +}; #ifdef VERBOSE_DEBUG #define verbose 1 @@ -99,13 +103,15 @@ static DEFINE_MUTEX(open_mutex); * Functions for ACM control messages. */ -static int acm_ctrl_msg(struct acm *acm, int request, int value, void *buf, int len) +static int acm_ctrl_msg(struct acm *acm, int request, int value, + void *buf, int len) { int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), request, USB_RT_ACM, value, acm->control->altsetting[0].desc.bInterfaceNumber, buf, len, 5000); - dbg("acm_control_msg: rq: 0x%02x val: %#x len: %#x result: %d", request, value, len, retval); + dbg("acm_control_msg: rq: 0x%02x val: %#x len: %#x result: %d", + request, value, len, retval); return retval < 0 ? retval : 0; } @@ -150,9 +156,8 @@ static int acm_wb_is_avail(struct acm *acm) n = ACM_NW; spin_lock_irqsave(&acm->write_lock, flags); - for (i = 0; i < ACM_NW; i++) { + for (i = 0; i < ACM_NW; i++) n -= acm->wb[i].use; - } spin_unlock_irqrestore(&acm->write_lock, flags); return n; } @@ -183,7 +188,8 @@ static int acm_start_wb(struct acm *acm, struct acm_wb *wb) wb->urb->transfer_buffer_length = wb->len; wb->urb->dev = acm->dev; - if ((rc = usb_submit_urb(wb->urb, GFP_ATOMIC)) < 0) { + rc = usb_submit_urb(wb->urb, GFP_ATOMIC); + if (rc < 0) { dbg("usb_submit_urb(write bulk) failed: %d", rc); acm_write_done(acm, wb); } @@ -262,6 +268,7 @@ static void acm_ctrl_irq(struct urb *urb) { struct acm *acm = urb->context; struct usb_cdc_notification *dr = urb->transfer_buffer; + struct tty_struct *tty; unsigned char *data; int newctrl; int retval; @@ -287,40 +294,45 @@ static void acm_ctrl_irq(struct urb *urb) data = (unsigned char *)(dr + 1); switch (dr->bNotificationType) { + case USB_CDC_NOTIFY_NETWORK_CONNECTION: + dbg("%s network", dr->wValue ? + "connected to" : "disconnected from"); + break; - case USB_CDC_NOTIFY_NETWORK_CONNECTION: - - dbg("%s network", dr->wValue ? "connected to" : "disconnected from"); - break; - - case USB_CDC_NOTIFY_SERIAL_STATE: - - newctrl = get_unaligned_le16(data); + case USB_CDC_NOTIFY_SERIAL_STATE: + tty = tty_port_tty_get(&acm->port); + newctrl = get_unaligned_le16(data); - if (acm->tty && !acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { + if (tty) { + if (!acm->clocal && + (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { dbg("calling hangup"); - tty_hangup(acm->tty); + tty_hangup(tty); } + tty_kref_put(tty); + } - acm->ctrlin = newctrl; - - dbg("input control lines: dcd%c dsr%c break%c ring%c framing%c parity%c overrun%c", - acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', acm->ctrlin & ACM_CTRL_DSR ? '+' : '-', - acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', acm->ctrlin & ACM_CTRL_RI ? '+' : '-', - acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-', - acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-'); + acm->ctrlin = newctrl; + dbg("input control lines: dcd%c dsr%c break%c ring%c framing%c parity%c overrun%c", + acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', + acm->ctrlin & ACM_CTRL_DSR ? '+' : '-', + acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', + acm->ctrlin & ACM_CTRL_RI ? '+' : '-', + acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', + acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-', + acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-'); break; - default: - dbg("unknown notification %d received: index %d len %d data0 %d data1 %d", - dr->bNotificationType, dr->wIndex, - dr->wLength, data[0], data[1]); - break; + default: + dbg("unknown notification %d received: index %d len %d data0 %d data1 %d", + dr->bNotificationType, dr->wIndex, + dr->wLength, data[0], data[1]); + break; } exit: usb_mark_last_busy(acm->dev); - retval = usb_submit_urb (urb, GFP_ATOMIC); + retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval) dev_err(&urb->dev->dev, "%s - usb_submit_urb failed with " "result %d", __func__, retval); @@ -371,15 +383,15 @@ static void acm_rx_tasklet(unsigned long _acm) { struct acm *acm = (void *)_acm; struct acm_rb *buf; - struct tty_struct *tty = acm->tty; + struct tty_struct *tty; struct acm_ru *rcv; unsigned long flags; unsigned char throttled; + struct usb_host_endpoint *ep; dbg("Entering acm_rx_tasklet"); - if (!ACM_READY(acm)) - { + if (!ACM_READY(acm)) { dbg("acm_rx_tasklet: ACM not ready"); return; } @@ -387,12 +399,13 @@ static void acm_rx_tasklet(unsigned long _acm) spin_lock_irqsave(&acm->throttle_lock, flags); throttled = acm->throttle; spin_unlock_irqrestore(&acm->throttle_lock, flags); - if (throttled) - { + if (throttled) { dbg("acm_rx_tasklet: throttled"); return; } + tty = tty_port_tty_get(&acm->port); + next_buffer: spin_lock_irqsave(&acm->read_lock, flags); if (list_empty(&acm->filled_read_bufs)) { @@ -406,20 +419,22 @@ next_buffer: dbg("acm_rx_tasklet: procesing buf 0x%p, size = %d", buf, buf->size); - tty_buffer_request_room(tty, buf->size); - spin_lock_irqsave(&acm->throttle_lock, flags); - throttled = acm->throttle; - spin_unlock_irqrestore(&acm->throttle_lock, flags); - if (!throttled) - tty_insert_flip_string(tty, buf->base, buf->size); - tty_flip_buffer_push(tty); - - if (throttled) { - dbg("Throttling noticed"); - spin_lock_irqsave(&acm->read_lock, flags); - list_add(&buf->list, &acm->filled_read_bufs); - spin_unlock_irqrestore(&acm->read_lock, flags); - return; + if (tty) { + spin_lock_irqsave(&acm->throttle_lock, flags); + throttled = acm->throttle; + spin_unlock_irqrestore(&acm->throttle_lock, flags); + if (!throttled) { + tty_buffer_request_room(tty, buf->size); + tty_insert_flip_string(tty, buf->base, buf->size); + tty_flip_buffer_push(tty); + } else { + tty_kref_put(tty); + dbg("Throttling noticed"); + spin_lock_irqsave(&acm->read_lock, flags); + list_add(&buf->list, &acm->filled_read_bufs); + spin_unlock_irqrestore(&acm->read_lock, flags); + return; + } } spin_lock_irqsave(&acm->read_lock, flags); @@ -428,6 +443,8 @@ next_buffer: goto next_buffer; urbs: + tty_kref_put(tty); + while (!list_empty(&acm->spare_read_bufs)) { spin_lock_irqsave(&acm->read_lock, flags); if (list_empty(&acm->spare_read_urbs)) { @@ -446,18 +463,28 @@ urbs: rcv->buffer = buf; - usb_fill_bulk_urb(rcv->urb, acm->dev, - acm->rx_endpoint, - buf->base, - acm->readsize, - acm_read_bulk, rcv); + ep = (usb_pipein(acm->rx_endpoint) ? acm->dev->ep_in : acm->dev->ep_out) + [usb_pipeendpoint(acm->rx_endpoint)]; + if (usb_endpoint_xfer_int(&ep->desc)) + usb_fill_int_urb(rcv->urb, acm->dev, + acm->rx_endpoint, + buf->base, + acm->readsize, + acm_read_bulk, rcv, ep->desc.bInterval); + else + usb_fill_bulk_urb(rcv->urb, acm->dev, + acm->rx_endpoint, + buf->base, + acm->readsize, + acm_read_bulk, rcv); rcv->urb->transfer_dma = buf->dma; rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; - /* This shouldn't kill the driver as unsuccessful URBs are returned to the - free-urbs-pool and resubmited ASAP */ + /* This shouldn't kill the driver as unsuccessful URBs are + returned to the free-urbs-pool and resubmited ASAP */ spin_lock_irqsave(&acm->read_lock, flags); - if (acm->susp_count || usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) { + if (acm->susp_count || + usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) { list_add(&buf->list, &acm->spare_read_bufs); list_add(&rcv->list, &acm->spare_read_urbs); acm->processing = 0; @@ -499,11 +526,14 @@ static void acm_write_bulk(struct urb *urb) static void acm_softint(struct work_struct *work) { struct acm *acm = container_of(work, struct acm, work); + struct tty_struct *tty; dev_vdbg(&acm->data->dev, "tx work\n"); if (!ACM_READY(acm)) return; - tty_wakeup(acm->tty); + tty = tty_port_tty_get(&acm->port); + tty_wakeup(tty); + tty_kref_put(tty); } static void acm_waker(struct work_struct *waker) @@ -530,7 +560,7 @@ static void acm_waker(struct work_struct *waker) static int acm_tty_open(struct tty_struct *tty, struct file *filp) { struct acm *acm; - int rv = -EINVAL; + int rv = -ENODEV; int i; dbg("Entering acm_tty_open."); @@ -543,8 +573,9 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) rv = 0; set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); + tty->driver_data = acm; - acm->tty = tty; + tty_port_tty_set(&acm->port, tty); if (usb_autopm_get_interface(acm->control) < 0) goto early_bail; @@ -552,11 +583,10 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) acm->control->needs_remote_wakeup = 1; mutex_lock(&acm->mutex); - if (acm->used++) { + if (acm->port.count++) { usb_autopm_put_interface(acm->control); goto done; - } - + } acm->ctrlurb->dev = acm->dev; if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) { @@ -567,22 +597,22 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) && (acm->ctrl_caps & USB_CDC_CAP_LINE)) goto full_bailout; + usb_autopm_put_interface(acm->control); INIT_LIST_HEAD(&acm->spare_read_urbs); INIT_LIST_HEAD(&acm->spare_read_bufs); INIT_LIST_HEAD(&acm->filled_read_bufs); - for (i = 0; i < acm->rx_buflimit; i++) { + + for (i = 0; i < acm->rx_buflimit; i++) list_add(&(acm->ru[i].list), &acm->spare_read_urbs); - } - for (i = 0; i < acm->rx_buflimit; i++) { + for (i = 0; i < acm->rx_buflimit; i++) list_add(&(acm->rb[i].list), &acm->spare_read_bufs); - } acm->throttle = 0; tasklet_schedule(&acm->urb_task); - + rv = tty_port_block_til_ready(&acm->port, tty, filp); done: mutex_unlock(&acm->mutex); err_out: @@ -593,16 +623,17 @@ full_bailout: usb_kill_urb(acm->ctrlurb); bail_out: usb_autopm_put_interface(acm->control); - acm->used--; + acm->port.count--; mutex_unlock(&acm->mutex); early_bail: mutex_unlock(&open_mutex); + tty_port_tty_set(&acm->port, NULL); return -EIO; } static void acm_tty_unregister(struct acm *acm) { - int i,nr; + int i, nr; nr = acm->rx_buflimit; tty_unregister_device(acm_tty_driver, acm->minor); @@ -619,41 +650,56 @@ static void acm_tty_unregister(struct acm *acm) static int acm_tty_chars_in_buffer(struct tty_struct *tty); +static void acm_port_down(struct acm *acm, int drain) +{ + int i, nr = acm->rx_buflimit; + mutex_lock(&open_mutex); + if (acm->dev) { + usb_autopm_get_interface(acm->control); + acm_set_control(acm, acm->ctrlout = 0); + /* try letting the last writes drain naturally */ + if (drain) { + wait_event_interruptible_timeout(acm->drain_wait, + (ACM_NW == acm_wb_is_avail(acm)) || !acm->dev, + ACM_CLOSE_TIMEOUT * HZ); + } + usb_kill_urb(acm->ctrlurb); + for (i = 0; i < ACM_NW; i++) + usb_kill_urb(acm->wb[i].urb); + for (i = 0; i < nr; i++) + usb_kill_urb(acm->ru[i].urb); + acm->control->needs_remote_wakeup = 0; + usb_autopm_put_interface(acm->control); + } + mutex_unlock(&open_mutex); +} + +static void acm_tty_hangup(struct tty_struct *tty) +{ + struct acm *acm = tty->driver_data; + tty_port_hangup(&acm->port); + acm_port_down(acm, 0); +} + static void acm_tty_close(struct tty_struct *tty, struct file *filp) { struct acm *acm = tty->driver_data; - int i,nr; - if (!acm || !acm->used) + /* Perform the closing process and see if we need to do the hardware + shutdown */ + if (!acm || tty_port_close_start(&acm->port, tty, filp) == 0) return; - - nr = acm->rx_buflimit; + acm_port_down(acm, 0); + tty_port_close_end(&acm->port, tty); mutex_lock(&open_mutex); - if (!--acm->used) { - if (acm->dev) { - usb_autopm_get_interface(acm->control); - acm_set_control(acm, acm->ctrlout = 0); - - /* try letting the last writes drain naturally */ - wait_event_interruptible_timeout(acm->drain_wait, - (ACM_NW == acm_wb_is_avail(acm)) - || !acm->dev, - ACM_CLOSE_TIMEOUT * HZ); - - usb_kill_urb(acm->ctrlurb); - for (i = 0; i < ACM_NW; i++) - usb_kill_urb(acm->wb[i].urb); - for (i = 0; i < nr; i++) - usb_kill_urb(acm->ru[i].urb); - acm->control->needs_remote_wakeup = 0; - usb_autopm_put_interface(acm->control); - } else - acm_tty_unregister(acm); - } + tty_port_tty_set(&acm->port, NULL); + if (!acm->dev) + acm_tty_unregister(acm); mutex_unlock(&open_mutex); } -static int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int count) +static int acm_tty_write(struct tty_struct *tty, + const unsigned char *buf, int count) { struct acm *acm = tty->driver_data; int stat; @@ -669,7 +715,8 @@ static int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int c return 0; spin_lock_irqsave(&acm->write_lock, flags); - if ((wbn = acm_wb_alloc(acm)) < 0) { + wbn = acm_wb_alloc(acm); + if (wbn < 0) { spin_unlock_irqrestore(&acm->write_lock, flags); return 0; } @@ -681,7 +728,8 @@ static int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int c wb->len = count; spin_unlock_irqrestore(&acm->write_lock, flags); - if ((stat = acm_write_start(acm, wbn)) < 0) + stat = acm_write_start(acm, wbn); + if (stat < 0) return stat; return count; } @@ -702,7 +750,7 @@ static int acm_tty_chars_in_buffer(struct tty_struct *tty) { struct acm *acm = tty->driver_data; if (!ACM_READY(acm)) - return -EINVAL; + return 0; /* * This is inaccurate (overcounts), but it works. */ @@ -767,8 +815,10 @@ static int acm_tty_tiocmset(struct tty_struct *tty, struct file *file, return -EINVAL; newctrl = acm->ctrlout; - set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); - clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); + set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | + (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); + clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | + (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); newctrl = (newctrl & ~clear) | set; @@ -777,7 +827,8 @@ static int acm_tty_tiocmset(struct tty_struct *tty, struct file *file, return acm_set_control(acm, acm->ctrlout = newctrl); } -static int acm_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) +static int acm_tty_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) { struct acm *acm = tty->driver_data; @@ -799,7 +850,8 @@ static const __u8 acm_tty_size[] = { 5, 6, 7, 8 }; -static void acm_tty_set_termios(struct tty_struct *tty, struct ktermios *termios_old) +static void acm_tty_set_termios(struct tty_struct *tty, + struct ktermios *termios_old) { struct acm *acm = tty->driver_data; struct ktermios *termios = tty->termios; @@ -809,19 +861,23 @@ static void acm_tty_set_termios(struct tty_struct *tty, struct ktermios *termios if (!ACM_READY(acm)) return; + /* FIXME: Needs to support the tty_baud interface */ + /* FIXME: Broken on sparc */ newline.dwDTERate = cpu_to_le32p(acm_tty_speed + (termios->c_cflag & CBAUD & ~CBAUDEX) + (termios->c_cflag & CBAUDEX ? 15 : 0)); newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; newline.bParityType = termios->c_cflag & PARENB ? - (termios->c_cflag & PARODD ? 1 : 2) + (termios->c_cflag & CMSPAR ? 2 : 0) : 0; + (termios->c_cflag & PARODD ? 1 : 2) + + (termios->c_cflag & CMSPAR ? 2 : 0) : 0; newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4]; - + /* FIXME: Needs to clear unsupported bits in the termios */ acm->clocal = ((termios->c_cflag & CLOCAL) != 0); if (!newline.dwDTERate) { newline.dwDTERate = acm->line.dwDTERate; newctrl &= ~ACM_CTRL_DTR; - } else newctrl |= ACM_CTRL_DTR; + } else + newctrl |= ACM_CTRL_DTR; if (newctrl != acm->ctrlout) acm_set_control(acm, acm->ctrlout = newctrl); @@ -846,9 +902,8 @@ static void acm_write_buffers_free(struct acm *acm) struct acm_wb *wb; struct usb_device *usb_dev = interface_to_usbdev(acm->control); - for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { + for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) usb_buffer_free(usb_dev, acm->writesize, wb->buf, wb->dmah); - } } static void acm_read_buffers_free(struct acm *acm) @@ -857,7 +912,8 @@ static void acm_read_buffers_free(struct acm *acm) int i, n = acm->rx_buflimit; for (i = 0; i < n; i++) - usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); + usb_buffer_free(usb_dev, acm->readsize, + acm->rb[i].base, acm->rb[i].dma); } /* Little helper: write buffers allocate */ @@ -882,8 +938,8 @@ static int acm_write_buffers_alloc(struct acm *acm) return 0; } -static int acm_probe (struct usb_interface *intf, - const struct usb_device_id *id) +static int acm_probe(struct usb_interface *intf, + const struct usb_device_id *id) { struct usb_cdc_union_desc *union_header = NULL; struct usb_cdc_country_functional_desc *cfd = NULL; @@ -891,13 +947,13 @@ static int acm_probe (struct usb_interface *intf, int buflen = intf->altsetting->extralen; struct usb_interface *control_interface; struct usb_interface *data_interface; - struct usb_endpoint_descriptor *epctrl; - struct usb_endpoint_descriptor *epread; - struct usb_endpoint_descriptor *epwrite; + struct usb_endpoint_descriptor *epctrl = NULL; + struct usb_endpoint_descriptor *epread = NULL; + struct usb_endpoint_descriptor *epwrite = NULL; struct usb_device *usb_dev = interface_to_usbdev(intf); struct acm *acm; int minor; - int ctrlsize,readsize; + int ctrlsize, readsize; u8 *buf; u8 ac_management_function = 0; u8 call_management_function = 0; @@ -906,6 +962,7 @@ static int acm_probe (struct usb_interface *intf, unsigned long quirks; int num_rx_buf; int i; + int combined_interfaces = 0; /* normal quirks */ quirks = (unsigned long)id->driver_info; @@ -917,7 +974,7 @@ static int acm_probe (struct usb_interface *intf, control_interface = usb_ifnum_to_if(usb_dev, 0); goto skip_normal_probe; } - + /* normal probing*/ if (!buffer) { dev_err(&intf->dev, "Weird descriptor references\n"); @@ -925,8 +982,10 @@ static int acm_probe (struct usb_interface *intf, } if (!buflen) { - if (intf->cur_altsetting->endpoint->extralen && intf->cur_altsetting->endpoint->extra) { - dev_dbg(&intf->dev,"Seeking extra descriptors on endpoint\n"); + if (intf->cur_altsetting->endpoint->extralen && + intf->cur_altsetting->endpoint->extra) { + dev_dbg(&intf->dev, + "Seeking extra descriptors on endpoint\n"); buflen = intf->cur_altsetting->endpoint->extralen; buffer = intf->cur_altsetting->endpoint->extra; } else { @@ -937,47 +996,43 @@ static int acm_probe (struct usb_interface *intf, } while (buflen > 0) { - if (buffer [1] != USB_DT_CS_INTERFACE) { + if (buffer[1] != USB_DT_CS_INTERFACE) { dev_err(&intf->dev, "skipping garbage\n"); goto next_desc; } - switch (buffer [2]) { - case USB_CDC_UNION_TYPE: /* we've found it */ - if (union_header) { - dev_err(&intf->dev, "More than one " - "union descriptor, " - "skipping ...\n"); - goto next_desc; - } - union_header = (struct usb_cdc_union_desc *) - buffer; - break; - case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ - cfd = (struct usb_cdc_country_functional_desc *)buffer; - break; - case USB_CDC_HEADER_TYPE: /* maybe check version */ - break; /* for now we ignore it */ - case USB_CDC_ACM_TYPE: - ac_management_function = buffer[3]; - break; - case USB_CDC_CALL_MANAGEMENT_TYPE: - call_management_function = buffer[3]; - call_interface_num = buffer[4]; - if ((call_management_function & 3) != 3) - dev_err(&intf->dev, "This device " - "cannot do calls on its own. " - "It is no modem.\n"); - break; - default: - /* there are LOTS more CDC descriptors that - * could legitimately be found here. - */ - dev_dbg(&intf->dev, "Ignoring descriptor: " - "type %02x, length %d\n", - buffer[2], buffer[0]); - break; + switch (buffer[2]) { + case USB_CDC_UNION_TYPE: /* we've found it */ + if (union_header) { + dev_err(&intf->dev, "More than one " + "union descriptor, skipping ...\n"); + goto next_desc; } + union_header = (struct usb_cdc_union_desc *)buffer; + break; + case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ + cfd = (struct usb_cdc_country_functional_desc *)buffer; + break; + case USB_CDC_HEADER_TYPE: /* maybe check version */ + break; /* for now we ignore it */ + case USB_CDC_ACM_TYPE: + ac_management_function = buffer[3]; + break; + case USB_CDC_CALL_MANAGEMENT_TYPE: + call_management_function = buffer[3]; + call_interface_num = buffer[4]; + if ((call_management_function & 3) != 3) + dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n"); + break; + default: + /* there are LOTS more CDC descriptors that + * could legitimately be found here. + */ + dev_dbg(&intf->dev, "Ignoring descriptor: " + "type %02x, length %d\n", + buffer[2], buffer[0]); + break; + } next_desc: buflen -= buffer[0]; buffer += buffer[0]; @@ -985,33 +1040,72 @@ next_desc: if (!union_header) { if (call_interface_num > 0) { - dev_dbg(&intf->dev,"No union descriptor, using call management descriptor\n"); + dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); control_interface = intf; } else { - dev_dbg(&intf->dev,"No union descriptor, giving up\n"); - return -ENODEV; + if (intf->cur_altsetting->desc.bNumEndpoints != 3) { + dev_dbg(&intf->dev,"No union descriptor, giving up\n"); + return -ENODEV; + } else { + dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n"); + combined_interfaces = 1; + control_interface = data_interface = intf; + goto look_for_collapsed_interface; + } } } else { control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); if (!control_interface || !data_interface) { - dev_dbg(&intf->dev,"no interfaces\n"); + dev_dbg(&intf->dev, "no interfaces\n"); return -ENODEV; } } - + if (data_interface_num != call_interface_num) - dev_dbg(&intf->dev,"Separate call control interface. That is not fully supported.\n"); + dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); + + if (control_interface == data_interface) { + /* some broken devices designed for windows work this way */ + dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); + combined_interfaces = 1; + /* a popular other OS doesn't use it */ + quirks |= NO_CAP_LINE; + if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { + dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); + return -EINVAL; + } +look_for_collapsed_interface: + for (i = 0; i < 3; i++) { + struct usb_endpoint_descriptor *ep; + ep = &data_interface->cur_altsetting->endpoint[i].desc; + + if (usb_endpoint_is_int_in(ep)) + epctrl = ep; + else if (usb_endpoint_is_bulk_out(ep)) + epwrite = ep; + else if (usb_endpoint_is_bulk_in(ep)) + epread = ep; + else + return -EINVAL; + } + if (!epctrl || !epread || !epwrite) + return -ENODEV; + else + goto made_compressed_probe; + } skip_normal_probe: /*workaround for switched interfaces */ - if (data_interface->cur_altsetting->desc.bInterfaceClass != CDC_DATA_INTERFACE_TYPE) { - if (control_interface->cur_altsetting->desc.bInterfaceClass == CDC_DATA_INTERFACE_TYPE) { + if (data_interface->cur_altsetting->desc.bInterfaceClass + != CDC_DATA_INTERFACE_TYPE) { + if (control_interface->cur_altsetting->desc.bInterfaceClass + == CDC_DATA_INTERFACE_TYPE) { struct usb_interface *t; - dev_dbg(&intf->dev,"Your device has switched interfaces.\n"); - + dev_dbg(&intf->dev, + "Your device has switched interfaces.\n"); t = control_interface; control_interface = data_interface; data_interface = t; @@ -1021,11 +1115,12 @@ skip_normal_probe: } /* Accept probe requests only for the control interface */ - if (intf != control_interface) + if (!combined_interfaces && intf != control_interface) return -ENODEV; - - if (usb_interface_claimed(data_interface)) { /* valid in this context */ - dev_dbg(&intf->dev,"The data interface isn't available\n"); + + if (!combined_interfaces && usb_interface_claimed(data_interface)) { + /* valid in this context */ + dev_dbg(&intf->dev, "The data interface isn't available\n"); return -EBUSY; } @@ -1042,12 +1137,13 @@ skip_normal_probe: if (!usb_endpoint_dir_in(epread)) { /* descriptors are swapped */ struct usb_endpoint_descriptor *t; - dev_dbg(&intf->dev,"The data interface has switched endpoints\n"); - + dev_dbg(&intf->dev, + "The data interface has switched endpoints\n"); t = epread; epread = epwrite; epwrite = t; } +made_compressed_probe: dbg("interfaces are valid"); for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++); @@ -1056,19 +1152,24 @@ skip_normal_probe: return -ENODEV; } - if (!(acm = kzalloc(sizeof(struct acm), GFP_KERNEL))) { + acm = kzalloc(sizeof(struct acm), GFP_KERNEL); + if (acm == NULL) { dev_dbg(&intf->dev, "out of memory (acm kzalloc)\n"); goto alloc_fail; } ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize); - readsize = le16_to_cpu(epread->wMaxPacketSize)* ( quirks == SINGLE_RX_URB ? 1 : 2); + readsize = le16_to_cpu(epread->wMaxPacketSize) * + (quirks == SINGLE_RX_URB ? 1 : 2); + acm->combined_interfaces = combined_interfaces; acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20; acm->control = control_interface; acm->data = data_interface; acm->minor = minor; acm->dev = usb_dev; acm->ctrl_caps = ac_management_function; + if (quirks & NO_CAP_LINE) + acm->ctrl_caps &= ~USB_CDC_CAP_LINE; acm->ctrlsize = ctrlsize; acm->readsize = readsize; acm->rx_buflimit = num_rx_buf; @@ -1082,6 +1183,8 @@ skip_normal_probe: spin_lock_init(&acm->read_lock); mutex_init(&acm->mutex); acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); + tty_port_init(&acm->port); + acm->port.ops = &acm_port_ops; buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); if (!buf) { @@ -1103,8 +1206,10 @@ skip_normal_probe: for (i = 0; i < num_rx_buf; i++) { struct acm_ru *rcv = &(acm->ru[i]); - if (!(rcv->urb = usb_alloc_urb(0, GFP_KERNEL))) { - dev_dbg(&intf->dev, "out of memory (read urbs usb_alloc_urb)\n"); + rcv->urb = usb_alloc_urb(0, GFP_KERNEL); + if (rcv->urb == NULL) { + dev_dbg(&intf->dev, + "out of memory (read urbs usb_alloc_urb)\n"); goto alloc_fail7; } @@ -1117,26 +1222,34 @@ skip_normal_probe: rb->base = usb_buffer_alloc(acm->dev, readsize, GFP_KERNEL, &rb->dma); if (!rb->base) { - dev_dbg(&intf->dev, "out of memory (read bufs usb_buffer_alloc)\n"); + dev_dbg(&intf->dev, + "out of memory (read bufs usb_buffer_alloc)\n"); goto alloc_fail7; } } - for(i = 0; i < ACM_NW; i++) - { + for (i = 0; i < ACM_NW; i++) { struct acm_wb *snd = &(acm->wb[i]); - if (!(snd->urb = usb_alloc_urb(0, GFP_KERNEL))) { - dev_dbg(&intf->dev, "out of memory (write urbs usb_alloc_urb)"); + snd->urb = usb_alloc_urb(0, GFP_KERNEL); + if (snd->urb == NULL) { + dev_dbg(&intf->dev, + "out of memory (write urbs usb_alloc_urb)"); goto alloc_fail7; } - usb_fill_bulk_urb(snd->urb, usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), + if (usb_endpoint_xfer_int(epwrite)) + usb_fill_int_urb(snd->urb, usb_dev, + usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), + NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); + else + usb_fill_bulk_urb(snd->urb, usb_dev, + usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), NULL, acm->writesize, acm_write_bulk, snd); snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; snd->instance = acm; } - usb_set_intfdata (intf, acm); + usb_set_intfdata(intf, acm); i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); if (i < 0) @@ -1147,7 +1260,8 @@ skip_normal_probe: if (!acm->country_codes) goto skip_countries; acm->country_code_size = cfd->bLength - 4; - memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, cfd->bLength - 4); + memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, + cfd->bLength - 4); acm->country_rel_date = cfd->iCountryCodeRelDate; i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); @@ -1156,7 +1270,8 @@ skip_normal_probe: goto skip_countries; } - i = device_create_file(&intf->dev, &dev_attr_iCountryCodeRelDate); + i = device_create_file(&intf->dev, + &dev_attr_iCountryCodeRelDate); if (i < 0) { kfree(acm->country_codes); goto skip_countries; @@ -1164,8 +1279,11 @@ skip_normal_probe: } skip_countries: - usb_fill_int_urb(acm->ctrlurb, usb_dev, usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), - acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, epctrl->bInterval); + usb_fill_int_urb(acm->ctrlurb, usb_dev, + usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), + acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, + /* works around buggy devices */ + epctrl->bInterval ? epctrl->bInterval : 0xff); acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; acm->ctrlurb->transfer_dma = acm->ctrl_dma; @@ -1212,7 +1330,7 @@ static void stop_data_traffic(struct acm *acm) tasklet_disable(&acm->urb_task); usb_kill_urb(acm->ctrlurb); - for(i = 0; i < ACM_NW; i++) + for (i = 0; i < ACM_NW; i++) usb_kill_urb(acm->wb[i].urb); for (i = 0; i < acm->rx_buflimit; i++) usb_kill_urb(acm->ru[i].urb); @@ -1227,13 +1345,14 @@ static void acm_disconnect(struct usb_interface *intf) { struct acm *acm = usb_get_intfdata(intf); struct usb_device *usb_dev = interface_to_usbdev(intf); + struct tty_struct *tty; /* sibling interface is already cleaning up */ if (!acm) return; mutex_lock(&open_mutex); - if (acm->country_codes){ + if (acm->country_codes) { device_remove_file(&acm->control->dev, &dev_attr_wCountryCodes); device_remove_file(&acm->control->dev, @@ -1247,22 +1366,26 @@ static void acm_disconnect(struct usb_interface *intf) stop_data_traffic(acm); acm_write_buffers_free(acm); - usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); + usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, + acm->ctrl_dma); acm_read_buffers_free(acm); - usb_driver_release_interface(&acm_driver, intf == acm->control ? + if (!acm->combined_interfaces) + usb_driver_release_interface(&acm_driver, intf == acm->control ? acm->data : acm->control); - if (!acm->used) { + if (acm->port.count == 0) { acm_tty_unregister(acm); mutex_unlock(&open_mutex); return; } mutex_unlock(&open_mutex); - - if (acm->tty) - tty_hangup(acm->tty); + tty = tty_port_tty_get(&acm->port); + if (tty) { + tty_hangup(tty); + tty_kref_put(tty); + } } #ifdef CONFIG_PM @@ -1297,7 +1420,7 @@ static int acm_suspend(struct usb_interface *intf, pm_message_t message) */ mutex_lock(&acm->mutex); - if (acm->used) + if (acm->port.count) stop_data_traffic(acm); mutex_unlock(&acm->mutex); @@ -1319,7 +1442,7 @@ static int acm_resume(struct usb_interface *intf) return 0; mutex_lock(&acm->mutex); - if (acm->used) { + if (acm->port.count) { rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); if (rv < 0) goto err_out; @@ -1387,6 +1510,9 @@ static struct usb_device_id acm_ids[] = { Maybe we should define a new quirk for this. */ }, + { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ + .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ + }, /* control interfaces with various AT-command sets */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, @@ -1398,7 +1524,7 @@ static struct usb_device_id acm_ids[] = { { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_ACM_PROTO_AT_GSM) }, { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, - USB_CDC_ACM_PROTO_AT_3G ) }, + USB_CDC_ACM_PROTO_AT_3G) }, { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_ACM_PROTO_AT_CDMA) }, @@ -1406,7 +1532,7 @@ static struct usb_device_id acm_ids[] = { { } }; -MODULE_DEVICE_TABLE (usb, acm_ids); +MODULE_DEVICE_TABLE(usb, acm_ids); static struct usb_driver acm_driver = { .name = "cdc_acm", @@ -1429,6 +1555,7 @@ static struct usb_driver acm_driver = { static const struct tty_operations acm_ops = { .open = acm_tty_open, .close = acm_tty_close, + .hangup = acm_tty_hangup, .write = acm_tty_write, .write_room = acm_tty_write_room, .ioctl = acm_tty_ioctl, @@ -1460,7 +1587,8 @@ static int __init acm_init(void) acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; acm_tty_driver->init_termios = tty_std_termios; - acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; + acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | + HUPCL | CLOCAL; tty_set_operations(acm_tty_driver, &acm_ops); retval = tty_register_driver(acm_tty_driver); @@ -1492,7 +1620,7 @@ static void __exit acm_exit(void) module_init(acm_init); module_exit(acm_exit); -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index 1f95e7aa1b66..1602324808ba 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -89,8 +89,8 @@ struct acm { struct usb_device *dev; /* the corresponding usb device */ struct usb_interface *control; /* control interface */ struct usb_interface *data; /* data interface */ - struct tty_struct *tty; /* the corresponding tty */ - struct urb *ctrlurb; /* urbs */ + struct tty_port port; /* our tty port data */ + struct urb *ctrlurb; /* urbs */ u8 *ctrl_buffer; /* buffers of urbs */ dma_addr_t ctrl_dma; /* dma handles of buffers */ u8 *country_codes; /* country codes from device */ @@ -120,12 +120,12 @@ struct acm { unsigned int ctrlout; /* output control lines (DTR, RTS) */ unsigned int writesize; /* max packet size for the output bulk endpoint */ unsigned int readsize,ctrlsize; /* buffer sizes for freeing */ - unsigned int used; /* someone has this acm's device open */ unsigned int minor; /* acm minor number */ unsigned char throttle; /* throttled by tty layer */ unsigned char clocal; /* termios CLOCAL */ unsigned int ctrl_caps; /* control capabilities from the class specific header */ unsigned int susp_count; /* number of suspended interfaces */ + int combined_interfaces:1; /* control and data collapsed */ struct acm_wb *delayed_wb; /* write queued for a device about to be woken */ }; @@ -134,3 +134,4 @@ struct acm { /* constants describing various quirks and errors */ #define NO_UNION_NORMAL 1 #define SINGLE_RX_URB 2 +#define NO_CAP_LINE 4 diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 0fe434505ac4..ba589d4ca8bc 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -15,7 +15,6 @@ #include <linux/errno.h> #include <linux/slab.h> #include <linux/module.h> -#include <linux/smp_lock.h> #include <linux/mutex.h> #include <linux/uaccess.h> #include <linux/bitops.h> diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index d2747a49b974..26c09f0257db 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -1057,8 +1057,14 @@ static const struct file_operations usblp_fops = { .release = usblp_release, }; +static char *usblp_nodename(struct device *dev) +{ + return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev)); +} + static struct usb_class_driver usblp_class = { .name = "lp%d", + .nodename = usblp_nodename, .fops = &usblp_fops, .minor_base = USBLP_MINOR_BASE, }; diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index c40a9b284cc9..b09a527f7341 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -751,7 +751,7 @@ static int get_capabilities(struct usbtmc_device_data *data) { struct device *dev = &data->usb_dev->dev; char *buffer; - int rv; + int rv = 0; buffer = kmalloc(0x18, GFP_KERNEL); if (!buffer) @@ -763,7 +763,7 @@ static int get_capabilities(struct usbtmc_device_data *data) 0, 0, buffer, 0x18, USBTMC_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); - return rv; + goto err_out; } dev_dbg(dev, "GET_CAPABILITIES returned %x\n", buffer[0]); @@ -773,7 +773,8 @@ static int get_capabilities(struct usbtmc_device_data *data) dev_dbg(dev, "USB488 device capabilities are %x\n", buffer[15]); if (buffer[0] != USBTMC_STATUS_SUCCESS) { dev_err(dev, "GET_CAPABILITIES returned %x\n", buffer[0]); - return -EPERM; + rv = -EPERM; + goto err_out; } data->capabilities.interface_capabilities = buffer[4]; @@ -781,8 +782,9 @@ static int get_capabilities(struct usbtmc_device_data *data) data->capabilities.usb488_interface_capabilities = buffer[14]; data->capabilities.usb488_device_capabilities = buffer[15]; +err_out: kfree(buffer); - return 0; + return rv; } #define capability_attribute(name) \ @@ -927,21 +929,27 @@ static long usbtmc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) switch (cmd) { case USBTMC_IOCTL_CLEAR_OUT_HALT: retval = usbtmc_ioctl_clear_out_halt(data); + break; case USBTMC_IOCTL_CLEAR_IN_HALT: retval = usbtmc_ioctl_clear_in_halt(data); + break; case USBTMC_IOCTL_INDICATOR_PULSE: retval = usbtmc_ioctl_indicator_pulse(data); + break; case USBTMC_IOCTL_CLEAR: retval = usbtmc_ioctl_clear(data); + break; case USBTMC_IOCTL_ABORT_BULK_OUT: retval = usbtmc_ioctl_abort_bulk_out(data); + break; case USBTMC_IOCTL_ABORT_BULK_IN: retval = usbtmc_ioctl_abort_bulk_in(data); + break; } mutex_unlock(&data->io_mutex); diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig index e1759d17ac5d..ad925946f869 100644 --- a/drivers/usb/core/Kconfig +++ b/drivers/usb/core/Kconfig @@ -28,7 +28,7 @@ comment "Miscellaneous USB options" depends on USB config USB_DEVICEFS - bool "USB device filesystem" + bool "USB device filesystem (DEPRECATED)" depends on USB ---help--- If you say Y here (and to "/proc file system support" in the "File @@ -46,11 +46,15 @@ config USB_DEVICEFS For the format of the various /proc/bus/usb/ files, please read <file:Documentation/usb/proc_usb_info.txt>. - Usbfs files can't handle Access Control Lists (ACL), which are the - default way to grant access to USB devices for untrusted users of a - desktop system. The usbfs functionality is replaced by real - device-nodes managed by udev. These nodes live in /dev/bus/usb and - are used by libusb. + Modern Linux systems do not use this. + + Usbfs entries are files and not character devices; usbfs can't + handle Access Control Lists (ACL) which are the default way to + grant access to USB devices for untrusted users of a desktop + system. + + The usbfs functionality is replaced by real device-nodes managed by + udev. These nodes lived in /dev/bus/usb and are used by libusb. config USB_DEVICE_CLASS bool "USB device class-devices (DEPRECATED)" diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile index b6078706fb93..ec16e6029905 100644 --- a/drivers/usb/core/Makefile +++ b/drivers/usb/core/Makefile @@ -4,14 +4,14 @@ usbcore-objs := usb.o hub.o hcd.o urb.o message.o driver.o \ config.o file.o buffer.o sysfs.o endpoint.o \ - devio.o notify.o generic.o quirks.o + devio.o notify.o generic.o quirks.o devices.o ifeq ($(CONFIG_PCI),y) usbcore-objs += hcd-pci.o endif ifeq ($(CONFIG_USB_DEVICEFS),y) - usbcore-objs += inode.o devices.o + usbcore-objs += inode.o endif obj-$(CONFIG_USB) += usbcore.o diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 568244c99bdc..24dfb33f90cb 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -19,6 +19,32 @@ static inline const char *plural(int n) return (n == 1 ? "" : "s"); } +/* FIXME: this is a kludge */ +static int find_next_descriptor_more(unsigned char *buffer, int size, + int dt1, int dt2, int dt3, int *num_skipped) +{ + struct usb_descriptor_header *h; + int n = 0; + unsigned char *buffer0 = buffer; + + /* Find the next descriptor of type dt1 or dt2 or dt3 */ + while (size > 0) { + h = (struct usb_descriptor_header *) buffer; + if (h->bDescriptorType == dt1 || h->bDescriptorType == dt2 || + h->bDescriptorType == dt3) + break; + buffer += h->bLength; + size -= h->bLength; + ++n; + } + + /* Store the number of descriptors skipped and return the + * number of bytes skipped */ + if (num_skipped) + *num_skipped = n; + return buffer - buffer0; +} + static int find_next_descriptor(unsigned char *buffer, int size, int dt1, int dt2, int *num_skipped) { @@ -43,6 +69,129 @@ static int find_next_descriptor(unsigned char *buffer, int size, return buffer - buffer0; } +static int usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, + int inum, int asnum, struct usb_host_endpoint *ep, + int num_ep, unsigned char *buffer, int size) +{ + unsigned char *buffer_start = buffer; + struct usb_ss_ep_comp_descriptor *desc; + int retval; + int num_skipped; + int max_tx; + int i; + + /* Allocate space for the SS endpoint companion descriptor */ + ep->ss_ep_comp = kzalloc(sizeof(struct usb_host_ss_ep_comp), + GFP_KERNEL); + if (!ep->ss_ep_comp) + return -ENOMEM; + desc = (struct usb_ss_ep_comp_descriptor *) buffer; + if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP) { + dev_warn(ddev, "No SuperSpeed endpoint companion for config %d " + " interface %d altsetting %d ep %d: " + "using minimum values\n", + cfgno, inum, asnum, ep->desc.bEndpointAddress); + ep->ss_ep_comp->desc.bLength = USB_DT_SS_EP_COMP_SIZE; + ep->ss_ep_comp->desc.bDescriptorType = USB_DT_SS_ENDPOINT_COMP; + ep->ss_ep_comp->desc.bMaxBurst = 0; + /* + * Leave bmAttributes as zero, which will mean no streams for + * bulk, and isoc won't support multiple bursts of packets. + * With bursts of only one packet, and a Mult of 1, the max + * amount of data moved per endpoint service interval is one + * packet. + */ + if (usb_endpoint_xfer_isoc(&ep->desc) || + usb_endpoint_xfer_int(&ep->desc)) + ep->ss_ep_comp->desc.wBytesPerInterval = + ep->desc.wMaxPacketSize; + /* + * The next descriptor is for an Endpoint or Interface, + * no extra descriptors to copy into the companion structure, + * and we didn't eat up any of the buffer. + */ + retval = 0; + goto valid; + } + memcpy(&ep->ss_ep_comp->desc, desc, USB_DT_SS_EP_COMP_SIZE); + desc = &ep->ss_ep_comp->desc; + buffer += desc->bLength; + size -= desc->bLength; + + /* Eat up the other descriptors we don't care about */ + ep->ss_ep_comp->extra = buffer; + i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, + USB_DT_INTERFACE, &num_skipped); + ep->ss_ep_comp->extralen = i; + buffer += i; + size -= i; + retval = buffer - buffer_start + i; + if (num_skipped > 0) + dev_dbg(ddev, "skipped %d descriptor%s after %s\n", + num_skipped, plural(num_skipped), + "SuperSpeed endpoint companion"); + + /* Check the various values */ + if (usb_endpoint_xfer_control(&ep->desc) && desc->bMaxBurst != 0) { + dev_warn(ddev, "Control endpoint with bMaxBurst = %d in " + "config %d interface %d altsetting %d ep %d: " + "setting to zero\n", desc->bMaxBurst, + cfgno, inum, asnum, ep->desc.bEndpointAddress); + desc->bMaxBurst = 0; + } + if (desc->bMaxBurst > 15) { + dev_warn(ddev, "Endpoint with bMaxBurst = %d in " + "config %d interface %d altsetting %d ep %d: " + "setting to 15\n", desc->bMaxBurst, + cfgno, inum, asnum, ep->desc.bEndpointAddress); + desc->bMaxBurst = 15; + } + if ((usb_endpoint_xfer_control(&ep->desc) || usb_endpoint_xfer_int(&ep->desc)) + && desc->bmAttributes != 0) { + dev_warn(ddev, "%s endpoint with bmAttributes = %d in " + "config %d interface %d altsetting %d ep %d: " + "setting to zero\n", + usb_endpoint_xfer_control(&ep->desc) ? "Control" : "Bulk", + desc->bmAttributes, + cfgno, inum, asnum, ep->desc.bEndpointAddress); + desc->bmAttributes = 0; + } + if (usb_endpoint_xfer_bulk(&ep->desc) && desc->bmAttributes > 16) { + dev_warn(ddev, "Bulk endpoint with more than 65536 streams in " + "config %d interface %d altsetting %d ep %d: " + "setting to max\n", + cfgno, inum, asnum, ep->desc.bEndpointAddress); + desc->bmAttributes = 16; + } + if (usb_endpoint_xfer_isoc(&ep->desc) && desc->bmAttributes > 2) { + dev_warn(ddev, "Isoc endpoint has Mult of %d in " + "config %d interface %d altsetting %d ep %d: " + "setting to 3\n", desc->bmAttributes + 1, + cfgno, inum, asnum, ep->desc.bEndpointAddress); + desc->bmAttributes = 2; + } + if (usb_endpoint_xfer_isoc(&ep->desc)) { + max_tx = ep->desc.wMaxPacketSize * (desc->bMaxBurst + 1) * + (desc->bmAttributes + 1); + } else if (usb_endpoint_xfer_int(&ep->desc)) { + max_tx = ep->desc.wMaxPacketSize * (desc->bMaxBurst + 1); + } else { + goto valid; + } + if (desc->wBytesPerInterval > max_tx) { + dev_warn(ddev, "%s endpoint with wBytesPerInterval of %d in " + "config %d interface %d altsetting %d ep %d: " + "setting to %d\n", + usb_endpoint_xfer_isoc(&ep->desc) ? "Isoc" : "Int", + desc->wBytesPerInterval, + cfgno, inum, asnum, ep->desc.bEndpointAddress, + max_tx); + desc->wBytesPerInterval = max_tx; + } +valid: + return retval; +} + static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, int asnum, struct usb_host_interface *ifp, int num_ep, unsigned char *buffer, int size) @@ -50,7 +199,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, unsigned char *buffer0 = buffer; struct usb_endpoint_descriptor *d; struct usb_host_endpoint *endpoint; - int n, i, j; + int n, i, j, retval; d = (struct usb_endpoint_descriptor *) buffer; buffer += d->bLength; @@ -92,6 +241,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, if (usb_endpoint_xfer_int(d)) { i = 1; switch (to_usb_device(ddev)->speed) { + case USB_SPEED_SUPER: case USB_SPEED_HIGH: /* Many device manufacturers are using full-speed * bInterval values in high-speed interrupt endpoint @@ -161,17 +311,39 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, cfgno, inum, asnum, d->bEndpointAddress, maxp); } - - /* Skip over any Class Specific or Vendor Specific descriptors; - * find the next endpoint or interface descriptor */ - endpoint->extra = buffer; - i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, - USB_DT_INTERFACE, &n); - endpoint->extralen = i; + /* Allocate room for and parse any SS endpoint companion descriptors */ + if (to_usb_device(ddev)->speed == USB_SPEED_SUPER) { + endpoint->extra = buffer; + i = find_next_descriptor_more(buffer, size, USB_DT_SS_ENDPOINT_COMP, + USB_DT_ENDPOINT, USB_DT_INTERFACE, &n); + endpoint->extralen = i; + buffer += i; + size -= i; + + if (size > 0) { + retval = usb_parse_ss_endpoint_companion(ddev, cfgno, + inum, asnum, endpoint, num_ep, buffer, + size); + if (retval >= 0) { + buffer += retval; + retval = buffer - buffer0; + } + } else { + retval = buffer - buffer0; + } + } else { + /* Skip over any Class Specific or Vendor Specific descriptors; + * find the next endpoint or interface descriptor */ + endpoint->extra = buffer; + i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, + USB_DT_INTERFACE, &n); + endpoint->extralen = i; + retval = buffer - buffer0 + i; + } if (n > 0) dev_dbg(ddev, "skipped %d descriptor%s after %s\n", n, plural(n), "endpoint"); - return buffer - buffer0 + i; + return retval; skip_to_next_endpoint_or_interface_descriptor: i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT, @@ -452,6 +624,8 @@ static int usb_parse_configuration(struct device *ddev, int cfgidx, kref_init(&intfc->ref); } + /* FIXME: parse the BOS descriptor */ + /* Skip over any Class Specific or Vendor Specific descriptors; * find the first interface descriptor */ config->extra = buffer; diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index 73c108d117b4..96f11715cd26 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -136,17 +136,19 @@ static const struct class_info clas_info[] = {USB_CLASS_AUDIO, "audio"}, {USB_CLASS_COMM, "comm."}, {USB_CLASS_HID, "HID"}, - {USB_CLASS_HUB, "hub"}, {USB_CLASS_PHYSICAL, "PID"}, + {USB_CLASS_STILL_IMAGE, "still"}, {USB_CLASS_PRINTER, "print"}, {USB_CLASS_MASS_STORAGE, "stor."}, + {USB_CLASS_HUB, "hub"}, {USB_CLASS_CDC_DATA, "data"}, - {USB_CLASS_APP_SPEC, "app."}, - {USB_CLASS_VENDOR_SPEC, "vend."}, - {USB_CLASS_STILL_IMAGE, "still"}, {USB_CLASS_CSCID, "scard"}, {USB_CLASS_CONTENT_SEC, "c-sec"}, {USB_CLASS_VIDEO, "video"}, + {USB_CLASS_WIRELESS_CONTROLLER, "wlcon"}, + {USB_CLASS_MISC, "misc"}, + {USB_CLASS_APP_SPEC, "app."}, + {USB_CLASS_VENDOR_SPEC, "vend."}, {-1, "unk."} /* leave as last */ }; diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 308609039c73..38b8bce782d6 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -325,21 +325,34 @@ static void async_completed(struct urb *urb) struct async *as = urb->context; struct dev_state *ps = as->ps; struct siginfo sinfo; + struct pid *pid = NULL; + uid_t uid = 0; + uid_t euid = 0; + u32 secid = 0; + int signr; spin_lock(&ps->lock); list_move_tail(&as->asynclist, &ps->async_completed); - spin_unlock(&ps->lock); as->status = urb->status; - if (as->signr) { + signr = as->signr; + if (signr) { sinfo.si_signo = as->signr; sinfo.si_errno = as->status; sinfo.si_code = SI_ASYNCIO; sinfo.si_addr = as->userurb; - kill_pid_info_as_uid(as->signr, &sinfo, as->pid, as->uid, - as->euid, as->secid); + pid = as->pid; + uid = as->uid; + euid = as->euid; + secid = as->secid; } snoop(&urb->dev->dev, "urb complete\n"); snoop_urb(urb, as->userurb); + spin_unlock(&ps->lock); + + if (signr) + kill_pid_info_as_uid(sinfo.si_signo, &sinfo, pid, uid, + euid, secid); + wake_up(&ps->wait); } @@ -982,7 +995,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, USBDEVFS_URB_ZERO_PACKET | USBDEVFS_URB_NO_INTERRUPT)) return -EINVAL; - if (!uurb->buffer) + if (uurb->buffer_length > 0 && !uurb->buffer) return -EINVAL; if (!(uurb->type == USBDEVFS_URB_TYPE_CONTROL && (uurb->endpoint & ~USB_ENDPOINT_DIR_MASK) == 0)) { @@ -1038,11 +1051,6 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, is_in = 0; uurb->endpoint &= ~USB_DIR_IN; } - if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ, - uurb->buffer, uurb->buffer_length)) { - kfree(dr); - return -EFAULT; - } snoop(&ps->dev->dev, "control urb: bRequest=%02x " "bRrequestType=%02x wValue=%04x " "wIndex=%04x wLength=%04x\n", @@ -1062,9 +1070,6 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, uurb->number_of_packets = 0; if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE) return -EINVAL; - if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ, - uurb->buffer, uurb->buffer_length)) - return -EFAULT; snoop(&ps->dev->dev, "bulk urb\n"); break; @@ -1106,28 +1111,35 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, return -EINVAL; if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE) return -EINVAL; - if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ, - uurb->buffer, uurb->buffer_length)) - return -EFAULT; snoop(&ps->dev->dev, "interrupt urb\n"); break; default: return -EINVAL; } - as = alloc_async(uurb->number_of_packets); - if (!as) { + if (uurb->buffer_length > 0 && + !access_ok(is_in ? VERIFY_WRITE : VERIFY_READ, + uurb->buffer, uurb->buffer_length)) { kfree(isopkt); kfree(dr); - return -ENOMEM; + return -EFAULT; } - as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL); - if (!as->urb->transfer_buffer) { + as = alloc_async(uurb->number_of_packets); + if (!as) { kfree(isopkt); kfree(dr); - free_async(as); return -ENOMEM; } + if (uurb->buffer_length > 0) { + as->urb->transfer_buffer = kmalloc(uurb->buffer_length, + GFP_KERNEL); + if (!as->urb->transfer_buffer) { + kfree(isopkt); + kfree(dr); + free_async(as); + return -ENOMEM; + } + } as->urb->dev = ps->dev; as->urb->pipe = (uurb->type << 30) | __create_pipe(ps->dev, uurb->endpoint & 0xf) | @@ -1169,7 +1181,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, kfree(isopkt); as->ps = ps; as->userurb = arg; - if (uurb->endpoint & USB_DIR_IN) + if (is_in && uurb->buffer_length > 0) as->userbuffer = uurb->buffer; else as->userbuffer = NULL; @@ -1179,9 +1191,9 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, as->uid = cred->uid; as->euid = cred->euid; security_task_getsecid(current, &as->secid); - if (!is_in) { + if (!is_in && uurb->buffer_length > 0) { if (copy_from_user(as->urb->transfer_buffer, uurb->buffer, - as->urb->transfer_buffer_length)) { + uurb->buffer_length)) { free_async(as); return -EFAULT; } @@ -1231,22 +1243,22 @@ static int processcompl(struct async *as, void __user * __user *arg) if (as->userbuffer) if (copy_to_user(as->userbuffer, urb->transfer_buffer, urb->transfer_buffer_length)) - return -EFAULT; + goto err_out; if (put_user(as->status, &userurb->status)) - return -EFAULT; + goto err_out; if (put_user(urb->actual_length, &userurb->actual_length)) - return -EFAULT; + goto err_out; if (put_user(urb->error_count, &userurb->error_count)) - return -EFAULT; + goto err_out; if (usb_endpoint_xfer_isoc(&urb->ep->desc)) { for (i = 0; i < urb->number_of_packets; i++) { if (put_user(urb->iso_frame_desc[i].actual_length, &userurb->iso_frame_desc[i].actual_length)) - return -EFAULT; + goto err_out; if (put_user(urb->iso_frame_desc[i].status, &userurb->iso_frame_desc[i].status)) - return -EFAULT; + goto err_out; } } @@ -1255,6 +1267,10 @@ static int processcompl(struct async *as, void __user * __user *arg) if (put_user(addr, (void __user * __user *)arg)) return -EFAULT; return 0; + +err_out: + free_async(as); + return -EFAULT; } static struct async *reap_as(struct dev_state *ps) diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index d0a21a5f8201..69e5773abfce 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -154,16 +154,11 @@ static const struct usb_device_id *usb_match_dynamic_id(struct usb_interface *in static int usb_probe_device(struct device *dev) { struct usb_device_driver *udriver = to_usb_device_driver(dev->driver); - struct usb_device *udev; + struct usb_device *udev = to_usb_device(dev); int error = -ENODEV; dev_dbg(dev, "%s\n", __func__); - if (!is_usb_device(dev)) /* Sanity check */ - return error; - - udev = to_usb_device(dev); - /* TODO: Add real matching code */ /* The device should always appear to be in use @@ -203,18 +198,13 @@ static void usb_cancel_queued_reset(struct usb_interface *iface) static int usb_probe_interface(struct device *dev) { struct usb_driver *driver = to_usb_driver(dev->driver); - struct usb_interface *intf; - struct usb_device *udev; + struct usb_interface *intf = to_usb_interface(dev); + struct usb_device *udev = interface_to_usbdev(intf); const struct usb_device_id *id; int error = -ENODEV; dev_dbg(dev, "%s\n", __func__); - if (is_usb_device(dev)) /* Sanity check */ - return error; - - intf = to_usb_interface(dev); - udev = interface_to_usbdev(intf); intf->needs_binding = 0; if (udev->authorized == 0) { @@ -385,7 +375,6 @@ void usb_driver_release_interface(struct usb_driver *driver, struct usb_interface *iface) { struct device *dev = &iface->dev; - struct usb_device *udev = interface_to_usbdev(iface); /* this should never happen, don't release something that's not ours */ if (!dev->driver || dev->driver != &driver->drvwrap.driver) @@ -394,23 +383,19 @@ void usb_driver_release_interface(struct usb_driver *driver, /* don't release from within disconnect() */ if (iface->condition != USB_INTERFACE_BOUND) return; + iface->condition = USB_INTERFACE_UNBINDING; - /* don't release if the interface hasn't been added yet */ + /* Release via the driver core only if the interface + * has already been registered + */ if (device_is_registered(dev)) { - iface->condition = USB_INTERFACE_UNBINDING; device_release_driver(dev); } else { - iface->condition = USB_INTERFACE_UNBOUND; - usb_cancel_queued_reset(iface); + down(&dev->sem); + usb_unbind_interface(dev); + dev->driver = NULL; + up(&dev->sem); } - dev->driver = NULL; - usb_set_intfdata(iface, NULL); - - usb_pm_lock(udev); - iface->condition = USB_INTERFACE_UNBOUND; - mark_quiesced(iface); - iface->needs_remote_wakeup = 0; - usb_pm_unlock(udev); } EXPORT_SYMBOL_GPL(usb_driver_release_interface); @@ -598,7 +583,7 @@ static int usb_device_match(struct device *dev, struct device_driver *drv) /* TODO: Add real matching code */ return 1; - } else { + } else if (is_usb_interface(dev)) { struct usb_interface *intf; struct usb_driver *usb_drv; const struct usb_device_id *id; @@ -630,11 +615,14 @@ static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) /* driver is often null here; dev_dbg() would oops */ pr_debug("usb %s: uevent\n", dev_name(dev)); - if (is_usb_device(dev)) + if (is_usb_device(dev)) { usb_dev = to_usb_device(dev); - else { + } else if (is_usb_interface(dev)) { struct usb_interface *intf = to_usb_interface(dev); + usb_dev = interface_to_usbdev(intf); + } else { + return 0; } if (usb_dev->devnum < 0) { @@ -1762,6 +1750,7 @@ int usb_suspend(struct device *dev, pm_message_t msg) int usb_resume(struct device *dev, pm_message_t msg) { struct usb_device *udev; + int status; udev = to_usb_device(dev); @@ -1771,7 +1760,14 @@ int usb_resume(struct device *dev, pm_message_t msg) */ if (udev->skip_sys_resume) return 0; - return usb_external_resume_device(udev, msg); + status = usb_external_resume_device(udev, msg); + + /* Avoid PM error messages for devices disconnected while suspended + * as we'll display regular disconnect messages just a bit later. + */ + if (status == -ENODEV) + return 0; + return status; } #endif /* CONFIG_PM */ diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c index 40dee2ac0133..bc39fc40bbde 100644 --- a/drivers/usb/core/endpoint.c +++ b/drivers/usb/core/endpoint.c @@ -15,19 +15,18 @@ #include <linux/usb.h> #include "usb.h" -#define MAX_ENDPOINT_MINORS (64*128*32) -static int usb_endpoint_major; -static DEFINE_IDR(endpoint_idr); - struct ep_device { struct usb_endpoint_descriptor *desc; struct usb_device *udev; struct device dev; - int minor; }; #define to_ep_device(_dev) \ container_of(_dev, struct ep_device, dev) +struct device_type usb_ep_device_type = { + .name = "usb_endpoint", +}; + struct ep_attribute { struct attribute attr; ssize_t (*show)(struct usb_device *, @@ -160,118 +159,10 @@ static struct attribute_group *ep_dev_groups[] = { NULL }; -static int usb_endpoint_major_init(void) -{ - dev_t dev; - int error; - - error = alloc_chrdev_region(&dev, 0, MAX_ENDPOINT_MINORS, - "usb_endpoint"); - if (error) { - printk(KERN_ERR "Unable to get a dynamic major for " - "usb endpoints.\n"); - return error; - } - usb_endpoint_major = MAJOR(dev); - - return error; -} - -static void usb_endpoint_major_cleanup(void) -{ - unregister_chrdev_region(MKDEV(usb_endpoint_major, 0), - MAX_ENDPOINT_MINORS); -} - -static int endpoint_get_minor(struct ep_device *ep_dev) -{ - static DEFINE_MUTEX(minor_lock); - int retval = -ENOMEM; - int id; - - mutex_lock(&minor_lock); - if (idr_pre_get(&endpoint_idr, GFP_KERNEL) == 0) - goto exit; - - retval = idr_get_new(&endpoint_idr, ep_dev, &id); - if (retval < 0) { - if (retval == -EAGAIN) - retval = -ENOMEM; - goto exit; - } - ep_dev->minor = id & MAX_ID_MASK; -exit: - mutex_unlock(&minor_lock); - return retval; -} - -static void endpoint_free_minor(struct ep_device *ep_dev) -{ - idr_remove(&endpoint_idr, ep_dev->minor); -} - -static struct endpoint_class { - struct kref kref; - struct class *class; -} *ep_class; - -static int init_endpoint_class(void) -{ - int result = 0; - - if (ep_class != NULL) { - kref_get(&ep_class->kref); - goto exit; - } - - ep_class = kmalloc(sizeof(*ep_class), GFP_KERNEL); - if (!ep_class) { - result = -ENOMEM; - goto exit; - } - - kref_init(&ep_class->kref); - ep_class->class = class_create(THIS_MODULE, "usb_endpoint"); - if (IS_ERR(ep_class->class)) { - result = PTR_ERR(ep_class->class); - goto class_create_error; - } - - result = usb_endpoint_major_init(); - if (result) - goto endpoint_major_error; - - goto exit; - -endpoint_major_error: - class_destroy(ep_class->class); -class_create_error: - kfree(ep_class); - ep_class = NULL; -exit: - return result; -} - -static void release_endpoint_class(struct kref *kref) -{ - /* Ok, we cheat as we know we only have one ep_class */ - class_destroy(ep_class->class); - kfree(ep_class); - ep_class = NULL; - usb_endpoint_major_cleanup(); -} - -static void destroy_endpoint_class(void) -{ - if (ep_class) - kref_put(&ep_class->kref, release_endpoint_class); -} - static void ep_device_release(struct device *dev) { struct ep_device *ep_dev = to_ep_device(dev); - endpoint_free_minor(ep_dev); kfree(ep_dev); } @@ -279,62 +170,32 @@ int usb_create_ep_devs(struct device *parent, struct usb_host_endpoint *endpoint, struct usb_device *udev) { - char name[8]; struct ep_device *ep_dev; int retval; - retval = init_endpoint_class(); - if (retval) - goto exit; - ep_dev = kzalloc(sizeof(*ep_dev), GFP_KERNEL); if (!ep_dev) { retval = -ENOMEM; - goto error_alloc; - } - - retval = endpoint_get_minor(ep_dev); - if (retval) { - dev_err(parent, "can not allocate minor number for %s\n", - dev_name(&ep_dev->dev)); - goto error_register; + goto exit; } ep_dev->desc = &endpoint->desc; ep_dev->udev = udev; ep_dev->dev.groups = ep_dev_groups; - ep_dev->dev.devt = MKDEV(usb_endpoint_major, ep_dev->minor); - ep_dev->dev.class = ep_class->class; + ep_dev->dev.type = &usb_ep_device_type; ep_dev->dev.parent = parent; ep_dev->dev.release = ep_device_release; - dev_set_name(&ep_dev->dev, "usbdev%d.%d_ep%02x", - udev->bus->busnum, udev->devnum, - endpoint->desc.bEndpointAddress); + dev_set_name(&ep_dev->dev, "ep_%02x", endpoint->desc.bEndpointAddress); retval = device_register(&ep_dev->dev); if (retval) - goto error_chrdev; + goto error_register; - /* create the symlink to the old-style "ep_XX" directory */ - sprintf(name, "ep_%02x", endpoint->desc.bEndpointAddress); - retval = sysfs_create_link(&parent->kobj, &ep_dev->dev.kobj, name); - if (retval) - goto error_link; endpoint->ep_dev = ep_dev; return retval; -error_link: - device_unregister(&ep_dev->dev); - destroy_endpoint_class(); - return retval; - -error_chrdev: - endpoint_free_minor(ep_dev); - error_register: kfree(ep_dev); -error_alloc: - destroy_endpoint_class(); exit: return retval; } @@ -344,12 +205,7 @@ void usb_remove_ep_devs(struct usb_host_endpoint *endpoint) struct ep_device *ep_dev = endpoint->ep_dev; if (ep_dev) { - char name[8]; - - sprintf(name, "ep_%02x", endpoint->desc.bEndpointAddress); - sysfs_remove_link(&ep_dev->dev.parent->kobj, name); device_unregister(&ep_dev->dev); endpoint->ep_dev = NULL; - destroy_endpoint_class(); } } diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index 997e659ff693..5cef88929b3e 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -67,6 +67,16 @@ static struct usb_class { struct class *class; } *usb_class; +static char *usb_nodename(struct device *dev) +{ + struct usb_class_driver *drv; + + drv = dev_get_drvdata(dev); + if (!drv || !drv->nodename) + return NULL; + return drv->nodename(dev); +} + static int init_usb_class(void) { int result = 0; @@ -90,6 +100,7 @@ static int init_usb_class(void) kfree(usb_class); usb_class = NULL; } + usb_class->class->nodename = usb_nodename; exit: return result; @@ -198,7 +209,7 @@ int usb_register_dev(struct usb_interface *intf, else temp = name; intf->usb_dev = device_create(usb_class->class, &intf->dev, - MKDEV(USB_MAJOR, minor), NULL, + MKDEV(USB_MAJOR, minor), class_driver, "%s", temp); if (IS_ERR(intf->usb_dev)) { down_write(&minor_rwsem); diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index a4301dc02d27..91f2885b6ee1 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -185,194 +185,198 @@ void usb_hcd_pci_remove(struct pci_dev *dev) } EXPORT_SYMBOL_GPL(usb_hcd_pci_remove); - -#ifdef CONFIG_PM - /** - * usb_hcd_pci_suspend - power management suspend of a PCI-based HCD - * @dev: USB Host Controller being suspended - * @message: Power Management message describing this state transition - * - * Store this function in the HCD's struct pci_driver as .suspend. + * usb_hcd_pci_shutdown - shutdown host controller + * @dev: USB Host Controller being shutdown */ -int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t message) +void usb_hcd_pci_shutdown(struct pci_dev *dev) +{ + struct usb_hcd *hcd; + + hcd = pci_get_drvdata(dev); + if (!hcd) + return; + + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); +} +EXPORT_SYMBOL_GPL(usb_hcd_pci_shutdown); + +#ifdef CONFIG_PM_SLEEP + +static int check_root_hub_suspended(struct device *dev) +{ + struct pci_dev *pci_dev = to_pci_dev(dev); + struct usb_hcd *hcd = pci_get_drvdata(pci_dev); + + if (!(hcd->state == HC_STATE_SUSPENDED || + hcd->state == HC_STATE_HALT)) { + dev_warn(dev, "Root hub is not suspended\n"); + return -EBUSY; + } + return 0; +} + +static int hcd_pci_suspend(struct device *dev) { - struct usb_hcd *hcd = pci_get_drvdata(dev); - int retval = 0; - int wake, w; - int has_pci_pm; + struct pci_dev *pci_dev = to_pci_dev(dev); + struct usb_hcd *hcd = pci_get_drvdata(pci_dev); + int retval; /* Root hub suspend should have stopped all downstream traffic, * and all bus master traffic. And done so for both the interface * and the stub usb_device (which we check here). But maybe it * didn't; writing sysfs power/state files ignores such rules... - * - * We must ignore the FREEZE vs SUSPEND distinction here, because - * otherwise the swsusp will save (and restore) garbage state. */ - if (!(hcd->state == HC_STATE_SUSPENDED || - hcd->state == HC_STATE_HALT)) { - dev_warn(&dev->dev, "Root hub is not suspended\n"); - retval = -EBUSY; - goto done; - } + retval = check_root_hub_suspended(dev); + if (retval) + return retval; /* We might already be suspended (runtime PM -- not yet written) */ - if (dev->current_state != PCI_D0) - goto done; + if (pci_dev->current_state != PCI_D0) + return retval; if (hcd->driver->pci_suspend) { - retval = hcd->driver->pci_suspend(hcd, message); + retval = hcd->driver->pci_suspend(hcd); suspend_report_result(hcd->driver->pci_suspend, retval); if (retval) - goto done; + return retval; } - synchronize_irq(dev->irq); + synchronize_irq(pci_dev->irq); /* Downstream ports from this root hub should already be quiesced, so * there will be no DMA activity. Now we can shut down the upstream - * link (except maybe for PME# resume signaling) and enter some PCI - * low power state, if the hardware allows. + * link (except maybe for PME# resume signaling). We'll enter a + * low power state during suspend_noirq, if the hardware allows. */ - pci_disable_device(dev); + pci_disable_device(pci_dev); + return retval; +} + +static int hcd_pci_suspend_noirq(struct device *dev) +{ + struct pci_dev *pci_dev = to_pci_dev(dev); + struct usb_hcd *hcd = pci_get_drvdata(pci_dev); + int retval; + + retval = check_root_hub_suspended(dev); + if (retval) + return retval; - pci_save_state(dev); + pci_save_state(pci_dev); - /* Don't fail on error to enable wakeup. We rely on pci code - * to reject requests the hardware can't implement, rather - * than coding the same thing. + /* If the root hub is HALTed rather than SUSPENDed, + * disallow remote wakeup. */ - wake = (hcd->state == HC_STATE_SUSPENDED && - device_may_wakeup(&dev->dev)); - w = pci_wake_from_d3(dev, wake); - if (w < 0) - wake = w; - dev_dbg(&dev->dev, "wakeup: %d\n", wake); - - /* Don't change state if we don't need to */ - if (message.event == PM_EVENT_FREEZE || - message.event == PM_EVENT_PRETHAW) { - dev_dbg(&dev->dev, "--> no state change\n"); - goto done; - } + if (hcd->state == HC_STATE_HALT) + device_set_wakeup_enable(dev, 0); + dev_dbg(dev, "wakeup: %d\n", device_may_wakeup(dev)); - has_pci_pm = pci_find_capability(dev, PCI_CAP_ID_PM); - if (!has_pci_pm) { - dev_dbg(&dev->dev, "--> PCI D0 legacy\n"); + /* Possibly enable remote wakeup, + * choose the appropriate low-power state, and go to that state. + */ + retval = pci_prepare_to_sleep(pci_dev); + if (retval == -EIO) { /* Low-power not supported */ + dev_dbg(dev, "--> PCI D0 legacy\n"); + retval = 0; + } else if (retval == 0) { + dev_dbg(dev, "--> PCI %s\n", + pci_power_name(pci_dev->current_state)); } else { - - /* NOTE: dev->current_state becomes nonzero only here, and - * only for devices that support PCI PM. Also, exiting - * PCI_D3 (but not PCI_D1 or PCI_D2) is allowed to reset - * some device state (e.g. as part of clock reinit). - */ - retval = pci_set_power_state(dev, PCI_D3hot); - suspend_report_result(pci_set_power_state, retval); - if (retval == 0) { - dev_dbg(&dev->dev, "--> PCI D3\n"); - } else { - dev_dbg(&dev->dev, "PCI D3 suspend fail, %d\n", - retval); - pci_restore_state(dev); - } + suspend_report_result(pci_prepare_to_sleep, retval); + return retval; } #ifdef CONFIG_PPC_PMAC - if (retval == 0) { - /* Disable ASIC clocks for USB */ - if (machine_is(powermac)) { - struct device_node *of_node; - - of_node = pci_device_to_OF_node(dev); - if (of_node) - pmac_call_feature(PMAC_FTR_USB_ENABLE, - of_node, 0, 0); - } + /* Disable ASIC clocks for USB */ + if (machine_is(powermac)) { + struct device_node *of_node; + + of_node = pci_device_to_OF_node(pci_dev); + if (of_node) + pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 0); } #endif - - done: return retval; } -EXPORT_SYMBOL_GPL(usb_hcd_pci_suspend); -/** - * usb_hcd_pci_resume - power management resume of a PCI-based HCD - * @dev: USB Host Controller being resumed - * - * Store this function in the HCD's struct pci_driver as .resume. - */ -int usb_hcd_pci_resume(struct pci_dev *dev) +static int hcd_pci_resume_noirq(struct device *dev) { - struct usb_hcd *hcd; - int retval; + struct pci_dev *pci_dev = to_pci_dev(dev); #ifdef CONFIG_PPC_PMAC /* Reenable ASIC clocks for USB */ if (machine_is(powermac)) { struct device_node *of_node; - of_node = pci_device_to_OF_node(dev); + of_node = pci_device_to_OF_node(pci_dev); if (of_node) pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 1); } #endif - pci_restore_state(dev); + /* Go back to D0 and disable remote wakeup */ + pci_back_from_sleep(pci_dev); + return 0; +} + +static int resume_common(struct device *dev, bool hibernated) +{ + struct pci_dev *pci_dev = to_pci_dev(dev); + struct usb_hcd *hcd = pci_get_drvdata(pci_dev); + int retval; - hcd = pci_get_drvdata(dev); if (hcd->state != HC_STATE_SUSPENDED) { - dev_dbg(hcd->self.controller, - "can't resume, not suspended!\n"); + dev_dbg(dev, "can't resume, not suspended!\n"); return 0; } - pci_enable_wake(dev, PCI_D0, false); - - retval = pci_enable_device(dev); + retval = pci_enable_device(pci_dev); if (retval < 0) { - dev_err(&dev->dev, "can't re-enable after resume, %d!\n", - retval); + dev_err(dev, "can't re-enable after resume, %d!\n", retval); return retval; } - pci_set_master(dev); - - /* yes, ignore this result too... */ - (void) pci_wake_from_d3(dev, 0); + pci_set_master(pci_dev); clear_bit(HCD_FLAG_SAW_IRQ, &hcd->flags); if (hcd->driver->pci_resume) { - retval = hcd->driver->pci_resume(hcd); + retval = hcd->driver->pci_resume(hcd, hibernated); if (retval) { - dev_err(hcd->self.controller, - "PCI post-resume error %d!\n", retval); + dev_err(dev, "PCI post-resume error %d!\n", retval); usb_hc_died(hcd); } } return retval; } -EXPORT_SYMBOL_GPL(usb_hcd_pci_resume); -#endif /* CONFIG_PM */ - -/** - * usb_hcd_pci_shutdown - shutdown host controller - * @dev: USB Host Controller being shutdown - */ -void usb_hcd_pci_shutdown(struct pci_dev *dev) +static int hcd_pci_resume(struct device *dev) { - struct usb_hcd *hcd; - - hcd = pci_get_drvdata(dev); - if (!hcd) - return; + return resume_common(dev, false); +} - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); +static int hcd_pci_restore(struct device *dev) +{ + return resume_common(dev, true); } -EXPORT_SYMBOL_GPL(usb_hcd_pci_shutdown); +struct dev_pm_ops usb_hcd_pci_pm_ops = { + .suspend = hcd_pci_suspend, + .suspend_noirq = hcd_pci_suspend_noirq, + .resume_noirq = hcd_pci_resume_noirq, + .resume = hcd_pci_resume, + .freeze = check_root_hub_suspended, + .freeze_noirq = check_root_hub_suspended, + .thaw_noirq = NULL, + .thaw = NULL, + .poweroff = hcd_pci_suspend, + .poweroff_noirq = hcd_pci_suspend_noirq, + .restore_noirq = hcd_pci_resume_noirq, + .restore = hcd_pci_restore, +}; +EXPORT_SYMBOL_GPL(usb_hcd_pci_pm_ops); + +#endif /* CONFIG_PM_SLEEP */ diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 42b93da1085d..95ccfa0b9fc5 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -128,6 +128,27 @@ static inline int is_root_hub(struct usb_device *udev) #define KERNEL_REL ((LINUX_VERSION_CODE >> 16) & 0x0ff) #define KERNEL_VER ((LINUX_VERSION_CODE >> 8) & 0x0ff) +/* usb 3.0 root hub device descriptor */ +static const u8 usb3_rh_dev_descriptor[18] = { + 0x12, /* __u8 bLength; */ + 0x01, /* __u8 bDescriptorType; Device */ + 0x00, 0x03, /* __le16 bcdUSB; v3.0 */ + + 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */ + 0x00, /* __u8 bDeviceSubClass; */ + 0x03, /* __u8 bDeviceProtocol; USB 3.0 hub */ + 0x09, /* __u8 bMaxPacketSize0; 2^9 = 512 Bytes */ + + 0x6b, 0x1d, /* __le16 idVendor; Linux Foundation */ + 0x02, 0x00, /* __le16 idProduct; device 0x0002 */ + KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ + + 0x03, /* __u8 iManufacturer; */ + 0x02, /* __u8 iProduct; */ + 0x01, /* __u8 iSerialNumber; */ + 0x01 /* __u8 bNumConfigurations; */ +}; + /* usb 2.0 root hub device descriptor */ static const u8 usb2_rh_dev_descriptor [18] = { 0x12, /* __u8 bLength; */ @@ -273,6 +294,47 @@ static const u8 hs_rh_config_descriptor [] = { 0x0c /* __u8 ep_bInterval; (256ms -- usb 2.0 spec) */ }; +static const u8 ss_rh_config_descriptor[] = { + /* one configuration */ + 0x09, /* __u8 bLength; */ + 0x02, /* __u8 bDescriptorType; Configuration */ + 0x19, 0x00, /* __le16 wTotalLength; FIXME */ + 0x01, /* __u8 bNumInterfaces; (1) */ + 0x01, /* __u8 bConfigurationValue; */ + 0x00, /* __u8 iConfiguration; */ + 0xc0, /* __u8 bmAttributes; + Bit 7: must be set, + 6: Self-powered, + 5: Remote wakeup, + 4..0: resvd */ + 0x00, /* __u8 MaxPower; */ + + /* one interface */ + 0x09, /* __u8 if_bLength; */ + 0x04, /* __u8 if_bDescriptorType; Interface */ + 0x00, /* __u8 if_bInterfaceNumber; */ + 0x00, /* __u8 if_bAlternateSetting; */ + 0x01, /* __u8 if_bNumEndpoints; */ + 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */ + 0x00, /* __u8 if_bInterfaceSubClass; */ + 0x00, /* __u8 if_bInterfaceProtocol; */ + 0x00, /* __u8 if_iInterface; */ + + /* one endpoint (status change endpoint) */ + 0x07, /* __u8 ep_bLength; */ + 0x05, /* __u8 ep_bDescriptorType; Endpoint */ + 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */ + 0x03, /* __u8 ep_bmAttributes; Interrupt */ + /* __le16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) + * see hub.c:hub_configure() for details. */ + (USB_MAXCHILDREN + 1 + 7) / 8, 0x00, + 0x0c /* __u8 ep_bInterval; (256ms -- usb 2.0 spec) */ + /* + * All 3.0 hubs should have an endpoint companion descriptor, + * but we're ignoring that for now. FIXME? + */ +}; + /*-------------------------------------------------------------------------*/ /* @@ -426,23 +488,39 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb) case DeviceRequest | USB_REQ_GET_DESCRIPTOR: switch (wValue & 0xff00) { case USB_DT_DEVICE << 8: - if (hcd->driver->flags & HCD_USB2) + switch (hcd->driver->flags & HCD_MASK) { + case HCD_USB3: + bufp = usb3_rh_dev_descriptor; + break; + case HCD_USB2: bufp = usb2_rh_dev_descriptor; - else if (hcd->driver->flags & HCD_USB11) + break; + case HCD_USB11: bufp = usb11_rh_dev_descriptor; - else + break; + default: goto error; + } len = 18; if (hcd->has_tt) patch_protocol = 1; break; case USB_DT_CONFIG << 8: - if (hcd->driver->flags & HCD_USB2) { + switch (hcd->driver->flags & HCD_MASK) { + case HCD_USB3: + bufp = ss_rh_config_descriptor; + len = sizeof ss_rh_config_descriptor; + break; + case HCD_USB2: bufp = hs_rh_config_descriptor; len = sizeof hs_rh_config_descriptor; - } else { + break; + case HCD_USB11: bufp = fs_rh_config_descriptor; len = sizeof fs_rh_config_descriptor; + break; + default: + goto error; } if (device_can_wakeup(&hcd->self.root_hub->dev)) patch_wakeup = 1; @@ -570,7 +648,7 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd) struct urb *urb; int length; unsigned long flags; - char buffer[4]; /* Any root hubs with > 31 ports? */ + char buffer[6]; /* Any root hubs with > 31 ports? */ if (unlikely(!hcd->rh_registered)) return; @@ -755,23 +833,6 @@ static struct attribute_group usb_bus_attr_group = { /*-------------------------------------------------------------------------*/ -static struct class *usb_host_class; - -int usb_host_init(void) -{ - int retval = 0; - - usb_host_class = class_create(THIS_MODULE, "usb_host"); - if (IS_ERR(usb_host_class)) - retval = PTR_ERR(usb_host_class); - return retval; -} - -void usb_host_cleanup(void) -{ - class_destroy(usb_host_class); -} - /** * usb_bus_init - shared initialization code * @bus: the bus structure being initialized @@ -818,12 +879,6 @@ static int usb_register_bus(struct usb_bus *bus) set_bit (busnum, busmap.busmap); bus->busnum = busnum; - bus->dev = device_create(usb_host_class, bus->controller, MKDEV(0, 0), - bus, "usb_host%d", busnum); - result = PTR_ERR(bus->dev); - if (IS_ERR(bus->dev)) - goto error_create_class_dev; - /* Add it to the local list of buses */ list_add (&bus->bus_list, &usb_bus_list); mutex_unlock(&usb_bus_list_lock); @@ -834,8 +889,6 @@ static int usb_register_bus(struct usb_bus *bus) "number %d\n", bus->busnum); return 0; -error_create_class_dev: - clear_bit(busnum, busmap.busmap); error_find_busnum: mutex_unlock(&usb_bus_list_lock); return result; @@ -865,8 +918,6 @@ static void usb_deregister_bus (struct usb_bus *bus) usb_notify_remove_bus(bus); clear_bit (bus->busnum, busmap.busmap); - - device_unregister(bus->dev); } /** @@ -1199,7 +1250,8 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, /* Map the URB's buffers for DMA access. * Lower level HCD code should use *_dma exclusively, - * unless it uses pio or talks to another transport. + * unless it uses pio or talks to another transport, + * or uses the provided scatter gather list for bulk. */ if (is_root_hub(urb->dev)) return 0; @@ -1520,6 +1572,92 @@ rescan: } } +/* Check whether a new configuration or alt setting for an interface + * will exceed the bandwidth for the bus (or the host controller resources). + * Only pass in a non-NULL config or interface, not both! + * Passing NULL for both new_config and new_intf means the device will be + * de-configured by issuing a set configuration 0 command. + */ +int usb_hcd_check_bandwidth(struct usb_device *udev, + struct usb_host_config *new_config, + struct usb_interface *new_intf) +{ + int num_intfs, i, j; + struct usb_interface_cache *intf_cache; + struct usb_host_interface *alt = 0; + int ret = 0; + struct usb_hcd *hcd; + struct usb_host_endpoint *ep; + + hcd = bus_to_hcd(udev->bus); + if (!hcd->driver->check_bandwidth) + return 0; + + /* Configuration is being removed - set configuration 0 */ + if (!new_config && !new_intf) { + for (i = 1; i < 16; ++i) { + ep = udev->ep_out[i]; + if (ep) + hcd->driver->drop_endpoint(hcd, udev, ep); + ep = udev->ep_in[i]; + if (ep) + hcd->driver->drop_endpoint(hcd, udev, ep); + } + hcd->driver->check_bandwidth(hcd, udev); + return 0; + } + /* Check if the HCD says there's enough bandwidth. Enable all endpoints + * each interface's alt setting 0 and ask the HCD to check the bandwidth + * of the bus. There will always be bandwidth for endpoint 0, so it's + * ok to exclude it. + */ + if (new_config) { + num_intfs = new_config->desc.bNumInterfaces; + /* Remove endpoints (except endpoint 0, which is always on the + * schedule) from the old config from the schedule + */ + for (i = 1; i < 16; ++i) { + ep = udev->ep_out[i]; + if (ep) { + ret = hcd->driver->drop_endpoint(hcd, udev, ep); + if (ret < 0) + goto reset; + } + ep = udev->ep_in[i]; + if (ep) { + ret = hcd->driver->drop_endpoint(hcd, udev, ep); + if (ret < 0) + goto reset; + } + } + for (i = 0; i < num_intfs; ++i) { + + /* Dig the endpoints for alt setting 0 out of the + * interface cache for this interface + */ + intf_cache = new_config->intf_cache[i]; + for (j = 0; j < intf_cache->num_altsetting; j++) { + if (intf_cache->altsetting[j].desc.bAlternateSetting == 0) + alt = &intf_cache->altsetting[j]; + } + if (!alt) { + printk(KERN_DEBUG "Did not find alt setting 0 for intf %d\n", i); + continue; + } + for (j = 0; j < alt->desc.bNumEndpoints; j++) { + ret = hcd->driver->add_endpoint(hcd, udev, &alt->endpoint[j]); + if (ret < 0) + goto reset; + } + } + } + ret = hcd->driver->check_bandwidth(hcd, udev); +reset: + if (ret < 0) + hcd->driver->reset_bandwidth(hcd, udev); + return ret; +} + /* Disables the endpoint: synchronizes with the hcd to make sure all * endpoint state is gone from hardware. usb_hcd_flush_endpoint() must * have been called previously. Use for set_configuration, set_interface, @@ -1897,8 +2035,20 @@ int usb_add_hcd(struct usb_hcd *hcd, retval = -ENOMEM; goto err_allocate_root_hub; } - rhdev->speed = (hcd->driver->flags & HCD_USB2) ? USB_SPEED_HIGH : - USB_SPEED_FULL; + + switch (hcd->driver->flags & HCD_MASK) { + case HCD_USB11: + rhdev->speed = USB_SPEED_FULL; + break; + case HCD_USB2: + rhdev->speed = USB_SPEED_HIGH; + break; + case HCD_USB3: + rhdev->speed = USB_SPEED_SUPER; + break; + default: + goto err_allocate_root_hub; + } hcd->self.root_hub = rhdev; /* wakeup flag init defaults to "everything works" for root hubs, diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index e7d4479de41c..ec5c67ea07b7 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -173,6 +173,8 @@ struct hc_driver { #define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */ #define HCD_USB11 0x0010 /* USB 1.1 */ #define HCD_USB2 0x0020 /* USB 2.0 */ +#define HCD_USB3 0x0040 /* USB 3.0 */ +#define HCD_MASK 0x0070 /* called to init HCD and root hub */ int (*reset) (struct usb_hcd *hcd); @@ -182,10 +184,10 @@ struct hc_driver { * a whole, not just the root hub; they're for PCI bus glue. */ /* called after suspending the hub, before entering D3 etc */ - int (*pci_suspend) (struct usb_hcd *hcd, pm_message_t message); + int (*pci_suspend)(struct usb_hcd *hcd); /* called after entering D0 (etc), before resuming the hub */ - int (*pci_resume) (struct usb_hcd *hcd); + int (*pci_resume)(struct usb_hcd *hcd, bool hibernated); /* cleanly make HCD stop writing memory and doing I/O */ void (*stop) (struct usb_hcd *hcd); @@ -224,6 +226,47 @@ struct hc_driver { void (*relinquish_port)(struct usb_hcd *, int); /* has a port been handed over to a companion? */ int (*port_handed_over)(struct usb_hcd *, int); + + /* CLEAR_TT_BUFFER completion callback */ + void (*clear_tt_buffer_complete)(struct usb_hcd *, + struct usb_host_endpoint *); + + /* xHCI specific functions */ + /* Called by usb_alloc_dev to alloc HC device structures */ + int (*alloc_dev)(struct usb_hcd *, struct usb_device *); + /* Called by usb_release_dev to free HC device structures */ + void (*free_dev)(struct usb_hcd *, struct usb_device *); + + /* Bandwidth computation functions */ + /* Note that add_endpoint() can only be called once per endpoint before + * check_bandwidth() or reset_bandwidth() must be called. + * drop_endpoint() can only be called once per endpoint also. + * A call to xhci_drop_endpoint() followed by a call to xhci_add_endpoint() will + * add the endpoint to the schedule with possibly new parameters denoted by a + * different endpoint descriptor in usb_host_endpoint. + * A call to xhci_add_endpoint() followed by a call to xhci_drop_endpoint() is + * not allowed. + */ + /* Allocate endpoint resources and add them to a new schedule */ + int (*add_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); + /* Drop an endpoint from a new schedule */ + int (*drop_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); + /* Check that a new hardware configuration, set using + * endpoint_enable and endpoint_disable, does not exceed bus + * bandwidth. This must be called before any set configuration + * or set interface requests are sent to the device. + */ + int (*check_bandwidth)(struct usb_hcd *, struct usb_device *); + /* Reset the device schedule to the last known good schedule, + * which was set from a previous successful call to + * check_bandwidth(). This reverts any add_endpoint() and + * drop_endpoint() calls since that last successful call. + * Used for when a check_bandwidth() call fails due to resource + * or bandwidth constraints. + */ + void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *); + /* Returns the hardware-chosen device address */ + int (*address_device)(struct usb_hcd *, struct usb_device *udev); }; extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb); @@ -242,6 +285,9 @@ extern void usb_hcd_disable_endpoint(struct usb_device *udev, extern void usb_hcd_reset_endpoint(struct usb_device *udev, struct usb_host_endpoint *ep); extern void usb_hcd_synchronize_unlinks(struct usb_device *udev); +extern int usb_hcd_check_bandwidth(struct usb_device *udev, + struct usb_host_config *new_config, + struct usb_interface *new_intf); extern int usb_hcd_get_frame_number(struct usb_device *udev); extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, @@ -261,14 +307,11 @@ struct pci_device_id; extern int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id); extern void usb_hcd_pci_remove(struct pci_dev *dev); - -#ifdef CONFIG_PM -extern int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t msg); -extern int usb_hcd_pci_resume(struct pci_dev *dev); -#endif /* CONFIG_PM */ - extern void usb_hcd_pci_shutdown(struct pci_dev *dev); +#ifdef CONFIG_PM_SLEEP +extern struct dev_pm_ops usb_hcd_pci_pm_ops; +#endif #endif /* CONFIG_PCI */ /* pci-ish (pdev null is ok) buffer alloc/mapping support */ diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index be86ae3f4088..71f86c60d83c 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -155,6 +155,8 @@ static inline char *portspeed(int portstatus) return "480 Mb/s"; else if (portstatus & (1 << USB_PORT_FEAT_LOWSPEED)) return "1.5 Mb/s"; + else if (portstatus & (1 << USB_PORT_FEAT_SUPERSPEED)) + return "5.0 Gb/s"; else return "12 Mb/s"; } @@ -448,42 +450,47 @@ hub_clear_tt_buffer (struct usb_device *hdev, u16 devinfo, u16 tt) * talking to TTs must queue control transfers (not just bulk and iso), so * both can talk to the same hub concurrently. */ -static void hub_tt_kevent (struct work_struct *work) +static void hub_tt_work(struct work_struct *work) { struct usb_hub *hub = - container_of(work, struct usb_hub, tt.kevent); + container_of(work, struct usb_hub, tt.clear_work); unsigned long flags; int limit = 100; spin_lock_irqsave (&hub->tt.lock, flags); while (--limit && !list_empty (&hub->tt.clear_list)) { - struct list_head *temp; + struct list_head *next; struct usb_tt_clear *clear; struct usb_device *hdev = hub->hdev; + const struct hc_driver *drv; int status; - temp = hub->tt.clear_list.next; - clear = list_entry (temp, struct usb_tt_clear, clear_list); + next = hub->tt.clear_list.next; + clear = list_entry (next, struct usb_tt_clear, clear_list); list_del (&clear->clear_list); /* drop lock so HCD can concurrently report other TT errors */ spin_unlock_irqrestore (&hub->tt.lock, flags); status = hub_clear_tt_buffer (hdev, clear->devinfo, clear->tt); - spin_lock_irqsave (&hub->tt.lock, flags); - if (status) dev_err (&hdev->dev, "clear tt %d (%04x) error %d\n", clear->tt, clear->devinfo, status); + + /* Tell the HCD, even if the operation failed */ + drv = clear->hcd->driver; + if (drv->clear_tt_buffer_complete) + (drv->clear_tt_buffer_complete)(clear->hcd, clear->ep); + kfree(clear); + spin_lock_irqsave(&hub->tt.lock, flags); } spin_unlock_irqrestore (&hub->tt.lock, flags); } /** - * usb_hub_tt_clear_buffer - clear control/bulk TT state in high speed hub - * @udev: the device whose split transaction failed - * @pipe: identifies the endpoint of the failed transaction + * usb_hub_clear_tt_buffer - clear control/bulk TT state in high speed hub + * @urb: an URB associated with the failed or incomplete split transaction * * High speed HCDs use this to tell the hub driver that some split control or * bulk transaction failed in a way that requires clearing internal state of @@ -493,8 +500,10 @@ static void hub_tt_kevent (struct work_struct *work) * It may not be possible for that hub to handle additional full (or low) * speed transactions until that state is fully cleared out. */ -void usb_hub_tt_clear_buffer (struct usb_device *udev, int pipe) +int usb_hub_clear_tt_buffer(struct urb *urb) { + struct usb_device *udev = urb->dev; + int pipe = urb->pipe; struct usb_tt *tt = udev->tt; unsigned long flags; struct usb_tt_clear *clear; @@ -506,7 +515,7 @@ void usb_hub_tt_clear_buffer (struct usb_device *udev, int pipe) if ((clear = kmalloc (sizeof *clear, GFP_ATOMIC)) == NULL) { dev_err (&udev->dev, "can't save CLEAR_TT_BUFFER state\n"); /* FIXME recover somehow ... RESET_TT? */ - return; + return -ENOMEM; } /* info that CLEAR_TT_BUFFER needs */ @@ -518,14 +527,19 @@ void usb_hub_tt_clear_buffer (struct usb_device *udev, int pipe) : (USB_ENDPOINT_XFER_BULK << 11); if (usb_pipein (pipe)) clear->devinfo |= 1 << 15; - + + /* info for completion callback */ + clear->hcd = bus_to_hcd(udev->bus); + clear->ep = urb->ep; + /* tell keventd to clear state for this TT */ spin_lock_irqsave (&tt->lock, flags); list_add_tail (&clear->clear_list, &tt->clear_list); - schedule_work (&tt->kevent); + schedule_work(&tt->clear_work); spin_unlock_irqrestore (&tt->lock, flags); + return 0; } -EXPORT_SYMBOL_GPL(usb_hub_tt_clear_buffer); +EXPORT_SYMBOL_GPL(usb_hub_clear_tt_buffer); /* If do_delay is false, return the number of milliseconds the caller * needs to delay. @@ -816,7 +830,7 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type) if (hub->has_indicators) cancel_delayed_work_sync(&hub->leds); if (hub->tt.hub) - cancel_work_sync(&hub->tt.kevent); + cancel_work_sync(&hub->tt.clear_work); } /* caller has locked the hub device */ @@ -933,7 +947,7 @@ static int hub_configure(struct usb_hub *hub, spin_lock_init (&hub->tt.lock); INIT_LIST_HEAD (&hub->tt.clear_list); - INIT_WORK (&hub->tt.kevent, hub_tt_kevent); + INIT_WORK(&hub->tt.clear_work, hub_tt_work); switch (hdev->descriptor.bDeviceProtocol) { case 0: break; @@ -951,6 +965,9 @@ static int hub_configure(struct usb_hub *hub, ret); hub->tt.hub = hdev; break; + case 3: + /* USB 3.0 hubs don't have a TT */ + break; default: dev_dbg(hub_dev, "Unrecognized hub protocol %d\n", hdev->descriptor.bDeviceProtocol); @@ -1323,6 +1340,11 @@ EXPORT_SYMBOL_GPL(usb_set_device_state); * 0 is reserved by USB for default address; (b) Linux's USB stack * uses always #1 for the root hub of the controller. So USB stack's * port #1, which is wusb virtual-port #0 has address #2. + * + * Devices connected under xHCI are not as simple. The host controller + * supports virtualization, so the hardware assigns device addresses and + * the HCD must setup data structures before issuing a set address + * command to the hardware. */ static void choose_address(struct usb_device *udev) { @@ -1642,6 +1664,9 @@ int usb_new_device(struct usb_device *udev) err = usb_configure_device(udev); /* detect & probe dev/intfs */ if (err < 0) goto fail; + dev_dbg(&udev->dev, "udev %d, busnum %d, minor = %d\n", + udev->devnum, udev->bus->busnum, + (((udev->bus->busnum-1) * 128) + (udev->devnum-1))); /* export the usbdev device-node for libusb */ udev->dev.devt = MKDEV(USB_DEVICE_MAJOR, (((udev->bus->busnum-1) * 128) + (udev->devnum-1))); @@ -2395,19 +2420,29 @@ EXPORT_SYMBOL_GPL(usb_ep0_reinit); static int hub_set_address(struct usb_device *udev, int devnum) { int retval; + struct usb_hcd *hcd = bus_to_hcd(udev->bus); - if (devnum <= 1) + /* + * The host controller will choose the device address, + * instead of the core having chosen it earlier + */ + if (!hcd->driver->address_device && devnum <= 1) return -EINVAL; if (udev->state == USB_STATE_ADDRESS) return 0; if (udev->state != USB_STATE_DEFAULT) return -EINVAL; - retval = usb_control_msg(udev, usb_sndaddr0pipe(), - USB_REQ_SET_ADDRESS, 0, devnum, 0, - NULL, 0, USB_CTRL_SET_TIMEOUT); + if (hcd->driver->address_device) { + retval = hcd->driver->address_device(hcd, udev); + } else { + retval = usb_control_msg(udev, usb_sndaddr0pipe(), + USB_REQ_SET_ADDRESS, 0, devnum, 0, + NULL, 0, USB_CTRL_SET_TIMEOUT); + if (retval == 0) + update_address(udev, devnum); + } if (retval == 0) { /* Device now using proper address. */ - update_address(udev, devnum); usb_set_device_state(udev, USB_STATE_ADDRESS); usb_ep0_reinit(udev); } @@ -2430,6 +2465,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, static DEFINE_MUTEX(usb_address0_mutex); struct usb_device *hdev = hub->hdev; + struct usb_hcd *hcd = bus_to_hcd(hdev->bus); int i, j, retval; unsigned delay = HUB_SHORT_RESET_TIME; enum usb_device_speed oldspeed = udev->speed; @@ -2452,11 +2488,24 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, mutex_lock(&usb_address0_mutex); - /* Reset the device; full speed may morph to high speed */ - retval = hub_port_reset(hub, port1, udev, delay); - if (retval < 0) /* error or disconnect */ + if ((hcd->driver->flags & HCD_USB3) && udev->config) { + /* FIXME this will need special handling by the xHCI driver. */ + dev_dbg(&udev->dev, + "xHCI reset of configured device " + "not supported yet.\n"); + retval = -EINVAL; goto fail; - /* success, speed is known */ + } else if (!udev->config && oldspeed == USB_SPEED_SUPER) { + /* Don't reset USB 3.0 devices during an initial setup */ + usb_set_device_state(udev, USB_STATE_DEFAULT); + } else { + /* Reset the device; full speed may morph to high speed */ + /* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */ + retval = hub_port_reset(hub, port1, udev, delay); + if (retval < 0) /* error or disconnect */ + goto fail; + /* success, speed is known */ + } retval = -ENODEV; if (oldspeed != USB_SPEED_UNKNOWN && oldspeed != udev->speed) { @@ -2471,6 +2520,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, * reported as 0xff in the device descriptor). WUSB1.0[4.8.1]. */ switch (udev->speed) { + case USB_SPEED_SUPER: case USB_SPEED_VARIABLE: /* fixed at 512 */ udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512); break; @@ -2496,16 +2546,20 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, case USB_SPEED_LOW: speed = "low"; break; case USB_SPEED_FULL: speed = "full"; break; case USB_SPEED_HIGH: speed = "high"; break; + case USB_SPEED_SUPER: + speed = "super"; + break; case USB_SPEED_VARIABLE: speed = "variable"; type = "Wireless "; break; default: speed = "?"; break; } - dev_info (&udev->dev, - "%s %s speed %sUSB device using %s and address %d\n", - (udev->config) ? "reset" : "new", speed, type, - udev->bus->controller->driver->name, devnum); + if (udev->speed != USB_SPEED_SUPER) + dev_info(&udev->dev, + "%s %s speed %sUSB device using %s and address %d\n", + (udev->config) ? "reset" : "new", speed, type, + udev->bus->controller->driver->name, devnum); /* Set up TT records, if needed */ if (hdev->tt) { @@ -2530,7 +2584,11 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, * value. */ for (i = 0; i < GET_DESCRIPTOR_TRIES; (++i, msleep(100))) { - if (USE_NEW_SCHEME(retry_counter)) { + /* + * An xHCI controller cannot send any packets to a device until + * a set address command successfully completes. + */ + if (USE_NEW_SCHEME(retry_counter) && !(hcd->driver->flags & HCD_USB3)) { struct usb_device_descriptor *buf; int r = 0; @@ -2596,7 +2654,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, * unauthorized address in the Connect Ack sequence; * authorization will assign the final address. */ - if (udev->wusb == 0) { + if (udev->wusb == 0) { for (j = 0; j < SET_ADDRESS_TRIES; ++j) { retval = hub_set_address(udev, devnum); if (retval >= 0) @@ -2609,13 +2667,20 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, devnum, retval); goto fail; } + if (udev->speed == USB_SPEED_SUPER) { + devnum = udev->devnum; + dev_info(&udev->dev, + "%s SuperSpeed USB device using %s and address %d\n", + (udev->config) ? "reset" : "new", + udev->bus->controller->driver->name, devnum); + } /* cope with hardware quirkiness: * - let SET_ADDRESS settle, some device hardware wants it * - read ep0 maxpacket even for high and low speed, */ msleep(10); - if (USE_NEW_SCHEME(retry_counter)) + if (USE_NEW_SCHEME(retry_counter) && !(hcd->driver->flags & HCD_USB3)) break; } @@ -2634,8 +2699,11 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, if (retval) goto fail; - i = udev->descriptor.bMaxPacketSize0 == 0xff? /* wusb device? */ - 512 : udev->descriptor.bMaxPacketSize0; + if (udev->descriptor.bMaxPacketSize0 == 0xff || + udev->speed == USB_SPEED_SUPER) + i = 512; + else + i = udev->descriptor.bMaxPacketSize0; if (le16_to_cpu(udev->ep0.desc.wMaxPacketSize) != i) { if (udev->speed != USB_SPEED_FULL || !(i == 8 || i == 16 || i == 32 || i == 64)) { @@ -2847,19 +2915,41 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, } usb_set_device_state(udev, USB_STATE_POWERED); - udev->speed = USB_SPEED_UNKNOWN; udev->bus_mA = hub->mA_per_port; udev->level = hdev->level + 1; udev->wusb = hub_is_wusb(hub); - /* set the address */ - choose_address(udev); - if (udev->devnum <= 0) { - status = -ENOTCONN; /* Don't retry */ - goto loop; + /* + * USB 3.0 devices are reset automatically before the connect + * port status change appears, and the root hub port status + * shows the correct speed. We also get port change + * notifications for USB 3.0 devices from the USB 3.0 portion of + * an external USB 3.0 hub, but this isn't handled correctly yet + * FIXME. + */ + + if (!(hcd->driver->flags & HCD_USB3)) + udev->speed = USB_SPEED_UNKNOWN; + else if ((hdev->parent == NULL) && + (portstatus & (1 << USB_PORT_FEAT_SUPERSPEED))) + udev->speed = USB_SPEED_SUPER; + else + udev->speed = USB_SPEED_UNKNOWN; + + /* + * xHCI needs to issue an address device command later + * in the hub_port_init sequence for SS/HS/FS/LS devices. + */ + if (!(hcd->driver->flags & HCD_USB3)) { + /* set the address */ + choose_address(udev); + if (udev->devnum <= 0) { + status = -ENOTCONN; /* Don't retry */ + goto loop; + } } - /* reset and get descriptor */ + /* reset (non-USB 3.0 devices) and get descriptor */ status = hub_port_init(hub, udev, port1, i); if (status < 0) goto loop; diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 2a116ce53c9b..de8081f065ed 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -47,7 +47,10 @@ #define USB_PORT_FEAT_L1 5 /* L1 suspend */ #define USB_PORT_FEAT_POWER 8 #define USB_PORT_FEAT_LOWSPEED 9 +/* This value was never in Table 11-17 */ #define USB_PORT_FEAT_HIGHSPEED 10 +/* This value is also fake */ +#define USB_PORT_FEAT_SUPERSPEED 11 #define USB_PORT_FEAT_C_CONNECTION 16 #define USB_PORT_FEAT_C_ENABLE 17 #define USB_PORT_FEAT_C_SUSPEND 18 @@ -185,16 +188,18 @@ struct usb_tt { /* for control/bulk error recovery (CLEAR_TT_BUFFER) */ spinlock_t lock; struct list_head clear_list; /* of usb_tt_clear */ - struct work_struct kevent; + struct work_struct clear_work; }; struct usb_tt_clear { struct list_head clear_list; unsigned tt; u16 devinfo; + struct usb_hcd *hcd; + struct usb_host_endpoint *ep; }; -extern void usb_hub_tt_clear_buffer(struct usb_device *dev, int pipe); +extern int usb_hub_clear_tt_buffer(struct urb *urb); extern void usb_ep0_reinit(struct usb_device *); #endif /* __LINUX_HUB_H */ diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index dff5760a37f6..ffe75e83787c 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -39,6 +39,7 @@ #include <linux/parser.h> #include <linux/notifier.h> #include <linux/seq_file.h> +#include <linux/smp_lock.h> #include <asm/byteorder.h> #include "usb.h" #include "hcd.h" @@ -265,9 +266,13 @@ static int remount(struct super_block *sb, int *flags, char *data) return -EINVAL; } + lock_kernel(); + if (usbfs_mount && usbfs_mount->mnt_sb) update_sb(usbfs_mount->mnt_sb); + unlock_kernel(); + return 0; } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index b62628377654..9720e699f472 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -10,6 +10,7 @@ #include <linux/mm.h> #include <linux/timer.h> #include <linux/ctype.h> +#include <linux/nls.h> #include <linux/device.h> #include <linux/scatterlist.h> #include <linux/usb/quirks.h> @@ -364,6 +365,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, int i; int urb_flags; int dma; + int use_sg; if (!io || !dev || !sg || usb_pipecontrol(pipe) @@ -391,7 +393,19 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, if (io->entries <= 0) return io->entries; - io->urbs = kmalloc(io->entries * sizeof *io->urbs, mem_flags); + /* If we're running on an xHCI host controller, queue the whole scatter + * gather list with one call to urb_enqueue(). This is only for bulk, + * as that endpoint type does not care how the data gets broken up + * across frames. + */ + if (usb_pipebulk(pipe) && + bus_to_hcd(dev->bus)->driver->flags & HCD_USB3) { + io->urbs = kmalloc(sizeof *io->urbs, mem_flags); + use_sg = true; + } else { + io->urbs = kmalloc(io->entries * sizeof *io->urbs, mem_flags); + use_sg = false; + } if (!io->urbs) goto nomem; @@ -401,62 +415,92 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, if (usb_pipein(pipe)) urb_flags |= URB_SHORT_NOT_OK; - for_each_sg(sg, sg, io->entries, i) { - unsigned len; - - io->urbs[i] = usb_alloc_urb(0, mem_flags); - if (!io->urbs[i]) { - io->entries = i; + if (use_sg) { + io->urbs[0] = usb_alloc_urb(0, mem_flags); + if (!io->urbs[0]) { + io->entries = 0; goto nomem; } - io->urbs[i]->dev = NULL; - io->urbs[i]->pipe = pipe; - io->urbs[i]->interval = period; - io->urbs[i]->transfer_flags = urb_flags; - - io->urbs[i]->complete = sg_complete; - io->urbs[i]->context = io; - - /* - * Some systems need to revert to PIO when DMA is temporarily - * unavailable. For their sakes, both transfer_buffer and - * transfer_dma are set when possible. However this can only - * work on systems without: - * - * - HIGHMEM, since DMA buffers located in high memory are - * not directly addressable by the CPU for PIO; - * - * - IOMMU, since dma_map_sg() is allowed to use an IOMMU to - * make virtually discontiguous buffers be "dma-contiguous" - * so that PIO and DMA need diferent numbers of URBs. - * - * So when HIGHMEM or IOMMU are in use, transfer_buffer is NULL - * to prevent stale pointers and to help spot bugs. - */ - if (dma) { - io->urbs[i]->transfer_dma = sg_dma_address(sg); - len = sg_dma_len(sg); + io->urbs[0]->dev = NULL; + io->urbs[0]->pipe = pipe; + io->urbs[0]->interval = period; + io->urbs[0]->transfer_flags = urb_flags; + + io->urbs[0]->complete = sg_complete; + io->urbs[0]->context = io; + /* A length of zero means transfer the whole sg list */ + io->urbs[0]->transfer_buffer_length = length; + if (length == 0) { + for_each_sg(sg, sg, io->entries, i) { + io->urbs[0]->transfer_buffer_length += + sg_dma_len(sg); + } + } + io->urbs[0]->sg = io; + io->urbs[0]->num_sgs = io->entries; + io->entries = 1; + } else { + for_each_sg(sg, sg, io->entries, i) { + unsigned len; + + io->urbs[i] = usb_alloc_urb(0, mem_flags); + if (!io->urbs[i]) { + io->entries = i; + goto nomem; + } + + io->urbs[i]->dev = NULL; + io->urbs[i]->pipe = pipe; + io->urbs[i]->interval = period; + io->urbs[i]->transfer_flags = urb_flags; + + io->urbs[i]->complete = sg_complete; + io->urbs[i]->context = io; + + /* + * Some systems need to revert to PIO when DMA is + * temporarily unavailable. For their sakes, both + * transfer_buffer and transfer_dma are set when + * possible. However this can only work on systems + * without: + * + * - HIGHMEM, since DMA buffers located in high memory + * are not directly addressable by the CPU for PIO; + * + * - IOMMU, since dma_map_sg() is allowed to use an + * IOMMU to make virtually discontiguous buffers be + * "dma-contiguous" so that PIO and DMA need diferent + * numbers of URBs. + * + * So when HIGHMEM or IOMMU are in use, transfer_buffer + * is NULL to prevent stale pointers and to help spot + * bugs. + */ + if (dma) { + io->urbs[i]->transfer_dma = sg_dma_address(sg); + len = sg_dma_len(sg); #if defined(CONFIG_HIGHMEM) || defined(CONFIG_GART_IOMMU) - io->urbs[i]->transfer_buffer = NULL; + io->urbs[i]->transfer_buffer = NULL; #else - io->urbs[i]->transfer_buffer = sg_virt(sg); + io->urbs[i]->transfer_buffer = sg_virt(sg); #endif - } else { - /* hc may use _only_ transfer_buffer */ - io->urbs[i]->transfer_buffer = sg_virt(sg); - len = sg->length; - } + } else { + /* hc may use _only_ transfer_buffer */ + io->urbs[i]->transfer_buffer = sg_virt(sg); + len = sg->length; + } - if (length) { - len = min_t(unsigned, len, length); - length -= len; - if (length == 0) - io->entries = i + 1; + if (length) { + len = min_t(unsigned, len, length); + length -= len; + if (length == 0) + io->entries = i + 1; + } + io->urbs[i]->transfer_buffer_length = len; } - io->urbs[i]->transfer_buffer_length = len; + io->urbs[--i]->transfer_flags &= ~URB_NO_INTERRUPT; } - io->urbs[--i]->transfer_flags &= ~URB_NO_INTERRUPT; /* transaction state */ io->count = io->entries; @@ -509,6 +553,10 @@ EXPORT_SYMBOL_GPL(usb_sg_init); * could be transferred. That capability is less useful for low or full * speed interrupt endpoints, which allow at most one packet per millisecond, * of at most 8 or 64 bytes (respectively). + * + * It is not necessary to call this function to reserve bandwidth for devices + * under an xHCI host controller, as the bandwidth is reserved when the + * configuration or interface alt setting is selected. */ void usb_sg_wait(struct usb_sg_request *io) { @@ -758,8 +806,50 @@ static int usb_string_sub(struct usb_device *dev, unsigned int langid, return rc; } +static int usb_get_langid(struct usb_device *dev, unsigned char *tbuf) +{ + int err; + + if (dev->have_langid) + return 0; + + if (dev->string_langid < 0) + return -EPIPE; + + err = usb_string_sub(dev, 0, 0, tbuf); + + /* If the string was reported but is malformed, default to english + * (0x0409) */ + if (err == -ENODATA || (err > 0 && err < 4)) { + dev->string_langid = 0x0409; + dev->have_langid = 1; + dev_err(&dev->dev, + "string descriptor 0 malformed (err = %d), " + "defaulting to 0x%04x\n", + err, dev->string_langid); + return 0; + } + + /* In case of all other errors, we assume the device is not able to + * deal with strings at all. Set string_langid to -1 in order to + * prevent any string to be retrieved from the device */ + if (err < 0) { + dev_err(&dev->dev, "string descriptor 0 read error: %d\n", + err); + dev->string_langid = -1; + return -EPIPE; + } + + /* always use the first langid listed */ + dev->string_langid = tbuf[2] | (tbuf[3] << 8); + dev->have_langid = 1; + dev_dbg(&dev->dev, "default language 0x%04x\n", + dev->string_langid); + return 0; +} + /** - * usb_string - returns ISO 8859-1 version of a string descriptor + * usb_string - returns UTF-8 version of a string descriptor * @dev: the device whose string descriptor is being retrieved * @index: the number of the descriptor * @buf: where to put the string @@ -767,17 +857,10 @@ static int usb_string_sub(struct usb_device *dev, unsigned int langid, * Context: !in_interrupt () * * This converts the UTF-16LE encoded strings returned by devices, from - * usb_get_string_descriptor(), to null-terminated ISO-8859-1 encoded ones - * that are more usable in most kernel contexts. Note that all characters - * in the chosen descriptor that can't be encoded using ISO-8859-1 - * are converted to the question mark ("?") character, and this function + * usb_get_string_descriptor(), to null-terminated UTF-8 encoded ones + * that are more usable in most kernel contexts. Note that this function * chooses strings in the first language supported by the device. * - * The ASCII (or, redundantly, "US-ASCII") character set is the seven-bit - * subset of ISO 8859-1. ISO-8859-1 is the eight-bit subset of Unicode, - * and is appropriate for use many uses of English and several other - * Western European languages. (But it doesn't include the "Euro" symbol.) - * * This call is synchronous, and may not be used in an interrupt context. * * Returns length of the string (>= 0) or usb_control_msg status (< 0). @@ -786,7 +869,6 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) { unsigned char *tbuf; int err; - unsigned int u, idx; if (dev->state == USB_STATE_SUSPENDED) return -EHOSTUNREACH; @@ -797,40 +879,18 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) if (!tbuf) return -ENOMEM; - /* get langid for strings if it's not yet known */ - if (!dev->have_langid) { - err = usb_string_sub(dev, 0, 0, tbuf); - if (err < 0) { - dev_err(&dev->dev, - "string descriptor 0 read error: %d\n", - err); - } else if (err < 4) { - dev_err(&dev->dev, "string descriptor 0 too short\n"); - } else { - dev->string_langid = tbuf[2] | (tbuf[3] << 8); - /* always use the first langid listed */ - dev_dbg(&dev->dev, "default language 0x%04x\n", - dev->string_langid); - } - - dev->have_langid = 1; - } + err = usb_get_langid(dev, tbuf); + if (err < 0) + goto errout; err = usb_string_sub(dev, dev->string_langid, index, tbuf); if (err < 0) goto errout; size--; /* leave room for trailing NULL char in output buffer */ - for (idx = 0, u = 2; u < err; u += 2) { - if (idx >= size) - break; - if (tbuf[u+1]) /* high byte */ - buf[idx++] = '?'; /* non ISO-8859-1 character */ - else - buf[idx++] = tbuf[u]; - } - buf[idx] = 0; - err = idx; + err = utf16s_to_utf8s((wchar_t *) &tbuf[2], (err - 2) / 2, + UTF16_LITTLE_ENDIAN, buf, size); + buf[err] = 0; if (tbuf[1] != USB_DT_STRING) dev_dbg(&dev->dev, @@ -843,6 +903,9 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) } EXPORT_SYMBOL_GPL(usb_string); +/* one UTF-8-encoded 16-bit character has at most three bytes */ +#define MAX_USB_STRING_SIZE (127 * 3 + 1) + /** * usb_cache_string - read a string descriptor and cache it for later use * @udev: the device whose string descriptor is being read @@ -860,9 +923,9 @@ char *usb_cache_string(struct usb_device *udev, int index) if (index <= 0) return NULL; - buf = kmalloc(256, GFP_KERNEL); + buf = kmalloc(MAX_USB_STRING_SIZE, GFP_KERNEL); if (buf) { - len = usb_string(udev, index, buf, 256); + len = usb_string(udev, index, buf, MAX_USB_STRING_SIZE); if (len > 0) { smallbuf = kmalloc(++len, GFP_KERNEL); if (!smallbuf) @@ -1664,6 +1727,21 @@ free_interfaces: if (ret) goto free_interfaces; + /* Make sure we have bandwidth (and available HCD resources) for this + * configuration. Remove endpoints from the schedule if we're dropping + * this configuration to set configuration 0. After this point, the + * host controller will not allow submissions to dropped endpoints. If + * this call fails, the device state is unchanged. + */ + if (cp) + ret = usb_hcd_check_bandwidth(dev, cp, NULL); + else + ret = usb_hcd_check_bandwidth(dev, NULL, NULL); + if (ret < 0) { + usb_autosuspend_device(dev); + goto free_interfaces; + } + /* if it's already configured, clear out old state first. * getting rid of old interfaces means unbinding their drivers. */ @@ -1686,6 +1764,7 @@ free_interfaces: dev->actconfig = cp; if (!cp) { usb_set_device_state(dev, USB_STATE_ADDRESS); + usb_hcd_check_bandwidth(dev, NULL, NULL); usb_autosuspend_device(dev); goto free_interfaces; } diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index c66789197927..b5c72e458943 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -552,8 +552,8 @@ static struct attribute *dev_string_attrs[] = { static mode_t dev_string_attrs_are_visible(struct kobject *kobj, struct attribute *a, int n) { - struct usb_device *udev = to_usb_device( - container_of(kobj, struct device, kobj)); + struct device *dev = container_of(kobj, struct device, kobj); + struct usb_device *udev = to_usb_device(dev); if (a == &dev_attr_manufacturer.attr) { if (udev->manufacturer == NULL) @@ -585,8 +585,8 @@ static ssize_t read_descriptors(struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { - struct usb_device *udev = to_usb_device( - container_of(kobj, struct device, kobj)); + struct device *dev = container_of(kobj, struct device, kobj); + struct usb_device *udev = to_usb_device(dev); size_t nleft = count; size_t srclen, n; int cfgno; @@ -786,8 +786,8 @@ static struct attribute *intf_assoc_attrs[] = { static mode_t intf_assoc_attrs_are_visible(struct kobject *kobj, struct attribute *a, int n) { - struct usb_interface *intf = to_usb_interface( - container_of(kobj, struct device, kobj)); + struct device *dev = container_of(kobj, struct device, kobj); + struct usb_interface *intf = to_usb_interface(dev); if (intf->intf_assoc == NULL) return 0; diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 3376055f36e7..0885d4abdc62 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -241,6 +241,12 @@ EXPORT_SYMBOL_GPL(usb_unanchor_urb); * If the USB subsystem can't allocate sufficient bandwidth to perform * the periodic request, submitting such a periodic request should fail. * + * For devices under xHCI, the bandwidth is reserved at configuration time, or + * when the alt setting is selected. If there is not enough bus bandwidth, the + * configuration/alt setting request will fail. Therefore, submissions to + * periodic endpoints on devices under xHCI should never fail due to bandwidth + * constraints. + * * Device drivers must explicitly request that repetition, by ensuring that * some URB is always on the endpoint's queue (except possibly for short * periods during completion callacks). When there is no longer an urb @@ -351,6 +357,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) if (xfertype == USB_ENDPOINT_XFER_ISOC) { int n, len; + /* FIXME SuperSpeed isoc endpoints have up to 16 bursts */ /* "high bandwidth" mode, 1-3 packets/uframe? */ if (dev->speed == USB_SPEED_HIGH) { int mult = 1 + ((max >> 11) & 0x03); @@ -426,6 +433,11 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) return -EINVAL; /* too big? */ switch (dev->speed) { + case USB_SPEED_SUPER: /* units are 125us */ + /* Handle up to 2^(16-1) microframes */ + if (urb->interval > (1 << 15)) + return -EINVAL; + max = 1 << 15; case USB_SPEED_HIGH: /* units are microframes */ /* NOTE usb handles 2^15 */ if (urb->interval > (1024 * 8)) diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 7eee400d3e32..a26f73880c32 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -34,6 +34,7 @@ #include <linux/usb.h> #include <linux/mutex.h> #include <linux/workqueue.h> +#include <linux/debugfs.h> #include <asm/io.h> #include <linux/scatterlist.h> @@ -139,8 +140,7 @@ static int __find_interface(struct device *dev, void *data) struct find_interface_arg *arg = data; struct usb_interface *intf; - /* can't look at usb devices, only interfaces */ - if (is_usb_device(dev)) + if (!is_usb_interface(dev)) return 0; intf = to_usb_interface(dev); @@ -184,11 +184,16 @@ EXPORT_SYMBOL_GPL(usb_find_interface); static void usb_release_dev(struct device *dev) { struct usb_device *udev; + struct usb_hcd *hcd; udev = to_usb_device(dev); + hcd = bus_to_hcd(udev->bus); usb_destroy_configuration(udev); - usb_put_hcd(bus_to_hcd(udev->bus)); + /* Root hubs aren't real devices, so don't free HCD resources */ + if (hcd->driver->free_dev && udev->parent) + hcd->driver->free_dev(hcd, udev); + usb_put_hcd(hcd); kfree(udev->product); kfree(udev->manufacturer); kfree(udev->serial); @@ -305,10 +310,21 @@ static struct dev_pm_ops usb_device_pm_ops = { #endif /* CONFIG_PM */ + +static char *usb_nodename(struct device *dev) +{ + struct usb_device *usb_dev; + + usb_dev = to_usb_device(dev); + return kasprintf(GFP_KERNEL, "bus/usb/%03d/%03d", + usb_dev->bus->busnum, usb_dev->devnum); +} + struct device_type usb_device_type = { .name = "usb_device", .release = usb_release_dev, .uevent = usb_dev_uevent, + .nodename = usb_nodename, .pm = &usb_device_pm_ops, }; @@ -348,6 +364,13 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, kfree(dev); return NULL; } + /* Root hubs aren't true devices, so don't allocate HCD resources */ + if (usb_hcd->driver->alloc_dev && parent && + !usb_hcd->driver->alloc_dev(usb_hcd, dev)) { + usb_put_hcd(bus_to_hcd(bus)); + kfree(dev); + return NULL; + } device_initialize(&dev->dev); dev->dev.bus = &usb_bus_type; @@ -375,18 +398,24 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, */ if (unlikely(!parent)) { dev->devpath[0] = '0'; + dev->route = 0; dev->dev.parent = bus->controller; dev_set_name(&dev->dev, "usb%d", bus->busnum); root_hub = 1; } else { /* match any labeling on the hubs; it's one-based */ - if (parent->devpath[0] == '0') + if (parent->devpath[0] == '0') { snprintf(dev->devpath, sizeof dev->devpath, "%d", port1); - else + /* Root ports are not counted in route string */ + dev->route = 0; + } else { snprintf(dev->devpath, sizeof dev->devpath, "%s.%d", parent->devpath, port1); + dev->route = parent->route + + (port1 << ((parent->level - 1)*4)); + } dev->dev.parent = &parent->dev; dev_set_name(&dev->dev, "%d-%s", bus->busnum, dev->devpath); @@ -799,12 +828,12 @@ void usb_buffer_dmasync(struct urb *urb) return; if (controller->dma_mask) { - dma_sync_single(controller, + dma_sync_single_for_cpu(controller, urb->transfer_dma, urb->transfer_buffer_length, usb_pipein(urb->pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); if (usb_pipecontrol(urb->pipe)) - dma_sync_single(controller, + dma_sync_single_for_cpu(controller, urb->setup_dma, sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); @@ -922,8 +951,8 @@ void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in, || !controller->dma_mask) return; - dma_sync_sg(controller, sg, n_hw_ents, - is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + dma_sync_sg_for_cpu(controller, sg, n_hw_ents, + is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } EXPORT_SYMBOL_GPL(usb_buffer_dmasync_sg); #endif @@ -1001,6 +1030,35 @@ static struct notifier_block usb_bus_nb = { .notifier_call = usb_bus_notify, }; +struct dentry *usb_debug_root; +EXPORT_SYMBOL_GPL(usb_debug_root); + +struct dentry *usb_debug_devices; + +static int usb_debugfs_init(void) +{ + usb_debug_root = debugfs_create_dir("usb", NULL); + if (!usb_debug_root) + return -ENOENT; + + usb_debug_devices = debugfs_create_file("devices", 0444, + usb_debug_root, NULL, + &usbfs_devices_fops); + if (!usb_debug_devices) { + debugfs_remove(usb_debug_root); + usb_debug_root = NULL; + return -ENOENT; + } + + return 0; +} + +static void usb_debugfs_cleanup(void) +{ + debugfs_remove(usb_debug_devices); + debugfs_remove(usb_debug_root); +} + /* * Init */ @@ -1012,6 +1070,10 @@ static int __init usb_init(void) return 0; } + retval = usb_debugfs_init(); + if (retval) + goto out; + retval = ksuspend_usb_init(); if (retval) goto out; @@ -1021,9 +1083,6 @@ static int __init usb_init(void) retval = bus_register_notifier(&usb_bus_type, &usb_bus_nb); if (retval) goto bus_notifier_failed; - retval = usb_host_init(); - if (retval) - goto host_init_failed; retval = usb_major_init(); if (retval) goto major_init_failed; @@ -1053,8 +1112,6 @@ usb_devio_init_failed: driver_register_failed: usb_major_cleanup(); major_init_failed: - usb_host_cleanup(); -host_init_failed: bus_unregister_notifier(&usb_bus_type, &usb_bus_nb); bus_notifier_failed: bus_unregister(&usb_bus_type); @@ -1079,10 +1136,10 @@ static void __exit usb_exit(void) usb_deregister(&usbfs_driver); usb_devio_cleanup(); usb_hub_cleanup(); - usb_host_cleanup(); bus_unregister_notifier(&usb_bus_type, &usb_bus_nb); bus_unregister(&usb_bus_type); ksuspend_usb_cleanup(); + usb_debugfs_cleanup(); } subsys_initcall(usb_init); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 79d8a9ea559b..e2a8cfaade1d 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -41,8 +41,6 @@ extern int usb_hub_init(void); extern void usb_hub_cleanup(void); extern int usb_major_init(void); extern void usb_major_cleanup(void); -extern int usb_host_init(void); -extern void usb_host_cleanup(void); #ifdef CONFIG_PM @@ -106,6 +104,7 @@ extern struct workqueue_struct *ksuspend_usb_wq; extern struct bus_type usb_bus_type; extern struct device_type usb_device_type; extern struct device_type usb_if_device_type; +extern struct device_type usb_ep_device_type; extern struct usb_device_driver usb_generic_driver; static inline int is_usb_device(const struct device *dev) @@ -113,6 +112,16 @@ static inline int is_usb_device(const struct device *dev) return dev->type == &usb_device_type; } +static inline int is_usb_interface(const struct device *dev) +{ + return dev->type == &usb_if_device_type; +} + +static inline int is_usb_endpoint(const struct device *dev) +{ + return dev->type == &usb_ep_device_type; +} + /* Do the same for device drivers and interface drivers. */ static inline int is_usb_device_driver(struct device_driver *drv) diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 080bb1e4b847..7f8e83a954ac 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -156,7 +156,7 @@ config USB_ATMEL_USBA config USB_GADGET_FSL_USB2 boolean "Freescale Highspeed USB DR Peripheral Controller" - depends on FSL_SOC + depends on FSL_SOC || ARCH_MXC select USB_GADGET_DUALSPEED help Some of Freescale PowerPC processors have a High Speed @@ -253,7 +253,7 @@ config USB_PXA25X_SMALL config USB_GADGET_PXA27X boolean "PXA 27x" - depends on ARCH_PXA && PXA27x + depends on ARCH_PXA && (PXA27x || PXA3xx) select USB_OTG_UTILS help Intel's PXA 27x series XScale ARM v5TE processors include @@ -272,6 +272,41 @@ config USB_PXA27X default USB_GADGET select USB_GADGET_SELECTED +config USB_GADGET_S3C_HSOTG + boolean "S3C HS/OtG USB Device controller" + depends on S3C_DEV_USB_HSOTG + select USB_GADGET_S3C_HSOTG_PIO + help + The Samsung S3C64XX USB2.0 high-speed gadget controller + integrated into the S3C64XX series SoC. + +config USB_S3C_HSOTG + tristate + depends on USB_GADGET_S3C_HSOTG + default USB_GADGET + select USB_GADGET_SELECTED + +config USB_GADGET_IMX + boolean "Freescale IMX USB Peripheral Controller" + depends on ARCH_MX1 + help + Freescale's IMX series include an integrated full speed + USB 1.1 device controller. The controller in the IMX series + is register-compatible. + + It has Six fixed-function endpoints, as well as endpoint + zero (for control transfers). + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "imx_udc" and force all + gadget drivers to also be dynamically linked. + +config USB_IMX + tristate + depends on USB_GADGET_IMX + default USB_GADGET + select USB_GADGET_SELECTED + config USB_GADGET_S3C2410 boolean "S3C2410 USB Device Controller" depends on ARCH_S3C2410 @@ -307,27 +342,6 @@ config USB_GADGET_MUSB_HDRC This OTG-capable silicon IP is used in dual designs including the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin -config USB_GADGET_IMX - boolean "Freescale IMX USB Peripheral Controller" - depends on ARCH_MX1 - help - Freescale's IMX series include an integrated full speed - USB 1.1 device controller. The controller in the IMX series - is register-compatible. - - It has Six fixed-function endpoints, as well as endpoint - zero (for control transfers). - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "imx_udc" and force all - gadget drivers to also be dynamically linked. - -config USB_IMX - tristate - depends on USB_GADGET_IMX - default USB_GADGET - select USB_GADGET_SELECTED - config USB_GADGET_M66592 boolean "Renesas M66592 USB Peripheral Controller" select USB_GADGET_DUALSPEED @@ -460,6 +474,27 @@ config USB_GOKU default USB_GADGET select USB_GADGET_SELECTED +config USB_GADGET_LANGWELL + boolean "Intel Langwell USB Device Controller" + depends on PCI + select USB_GADGET_DUALSPEED + help + Intel Langwell USB Device Controller is a High-Speed USB + On-The-Go device controller. + + The number of programmable endpoints is different through + controller revision. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "langwell_udc" and force all + gadget drivers to also be dynamically linked. + +config USB_LANGWELL + tristate + depends on USB_GADGET_LANGWELL + default USB_GADGET + select USB_GADGET_SELECTED + # # LAST -- dummy/emulated controller @@ -566,6 +601,21 @@ config USB_ZERO_HNPTEST the "B-Peripheral" role, that device will use HNP to let this one serve as the USB host instead (in the "B-Host" role). +config USB_AUDIO + tristate "Audio Gadget (EXPERIMENTAL)" + depends on SND + select SND_PCM + help + Gadget Audio is compatible with USB Audio Class specification 1.0. + It will include at least one AudioControl interface, zero or more + AudioStream interface and zero or more MIDIStream interface. + + Gadget Audio will use on-board ALSA (CONFIG_SND) audio card to + playback or capture audio stream. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "g_audio". + config USB_ETH tristate "Ethernet Gadget (with CDC Ethernet support)" depends on NET diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 39a51d746cb7..e6017e6bf6da 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -18,14 +18,21 @@ obj-$(CONFIG_USB_S3C2410) += s3c2410_udc.o obj-$(CONFIG_USB_AT91) += at91_udc.o obj-$(CONFIG_USB_ATMEL_USBA) += atmel_usba_udc.o obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o +fsl_usb2_udc-objs := fsl_udc_core.o +ifeq ($(CONFIG_ARCH_MXC),y) +fsl_usb2_udc-objs += fsl_mx3_udc.o +endif obj-$(CONFIG_USB_M66592) += m66592-udc.o obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o obj-$(CONFIG_USB_CI13XXX) += ci13xxx_udc.o +obj-$(CONFIG_USB_S3C_HSOTG) += s3c-hsotg.o +obj-$(CONFIG_USB_LANGWELL) += langwell_udc.o # # USB gadget drivers # g_zero-objs := zero.o +g_audio-objs := audio.o g_ether-objs := ether.o g_serial-objs := serial.o g_midi-objs := gmidi.o @@ -35,6 +42,7 @@ g_printer-objs := printer.o g_cdc-objs := cdc2.o obj-$(CONFIG_USB_ZERO) += g_zero.o +obj-$(CONFIG_USB_AUDIO) += g_audio.o obj-$(CONFIG_USB_ETH) += g_ether.o obj-$(CONFIG_USB_GADGETFS) += gadgetfs.o obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index 826f3adde5d8..77352ccc245e 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -48,7 +48,6 @@ #include <linux/ioport.h> #include <linux/sched.h> #include <linux/slab.h> -#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/timer.h> diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 0b2bb8f0706d..72bae8f39d81 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -485,7 +485,7 @@ static int at91_ep_enable(struct usb_ep *_ep, return -ESHUTDOWN; } - tmp = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + tmp = usb_endpoint_type(desc); switch (tmp) { case USB_ENDPOINT_XFER_CONTROL: DBG("only one control endpoint\n"); @@ -517,7 +517,7 @@ ok: local_irq_save(flags); /* initialize endpoint to match this descriptor */ - ep->is_in = (desc->bEndpointAddress & USB_DIR_IN) != 0; + ep->is_in = usb_endpoint_dir_in(desc); ep->is_iso = (tmp == USB_ENDPOINT_XFER_ISOC); ep->stopped = 0; if (ep->is_in) @@ -1574,7 +1574,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver) udc->driver = driver; udc->gadget.dev.driver = &driver->driver; - udc->gadget.dev.driver_data = &driver->driver; + dev_set_drvdata(&udc->gadget.dev, &driver->driver); udc->enabled = 1; udc->selfpowered = 1; @@ -1583,7 +1583,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver) DBG("driver->bind() returned %d\n", retval); udc->driver = NULL; udc->gadget.dev.driver = NULL; - udc->gadget.dev.driver_data = NULL; + dev_set_drvdata(&udc->gadget.dev, NULL); udc->enabled = 0; udc->selfpowered = 0; return retval; @@ -1613,7 +1613,7 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver) driver->unbind(&udc->gadget); udc->gadget.dev.driver = NULL; - udc->gadget.dev.driver_data = NULL; + dev_set_drvdata(&udc->gadget.dev, NULL); udc->driver = NULL; DBG("unbound from %s\n", driver->driver.name); diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index 05c913cc3658..4e970cf0e29a 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -326,13 +326,7 @@ static int vbus_is_present(struct usba_udc *udc) return 1; } -#if defined(CONFIG_AVR32) - -static void toggle_bias(int is_on) -{ -} - -#elif defined(CONFIG_ARCH_AT91) +#if defined(CONFIG_ARCH_AT91SAM9RL) #include <mach/at91_pmc.h> @@ -346,7 +340,13 @@ static void toggle_bias(int is_on) at91_sys_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); } -#endif /* CONFIG_ARCH_AT91 */ +#else + +static void toggle_bias(int is_on) +{ +} + +#endif /* CONFIG_ARCH_AT91SAM9RL */ static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req) { @@ -550,12 +550,12 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) DBG(DBG_HW, "%s: EPT_SIZE = %lu (maxpacket = %lu)\n", ep->ep.name, ept_cfg, maxpacket); - if ((desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) { + if (usb_endpoint_dir_in(desc)) { ep->is_in = 1; ept_cfg |= USBA_EPT_DIR_IN; } - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + switch (usb_endpoint_type(desc)) { case USB_ENDPOINT_XFER_CONTROL: ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_CONTROL); ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE); diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c new file mode 100644 index 000000000000..9f80f4e970bd --- /dev/null +++ b/drivers/usb/gadget/audio.c @@ -0,0 +1,302 @@ +/* + * audio.c -- Audio gadget driver + * + * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> + * Copyright (C) 2008 Analog Devices, Inc + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/utsname.h> + +#include "u_audio.h" + +#define DRIVER_DESC "Linux USB Audio Gadget" +#define DRIVER_VERSION "Dec 18, 2008" + +/*-------------------------------------------------------------------------*/ + +/* + * Kbuild is not very cooperative with respect to linking separately + * compiled library objects into one module. So for now we won't use + * separate compilation ... ensuring init/exit sections work to shrink + * the runtime footprint, and giving us at least some parts of what + * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + */ +#include "composite.c" +#include "usbstring.c" +#include "config.c" +#include "epautoconf.c" + +#include "u_audio.c" +#include "f_audio.c" + +/*-------------------------------------------------------------------------*/ + +/* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! + * Instead: allocate your own, using normal USB-IF procedures. + */ + +/* Thanks to Linux Foundation for donating this product ID. */ +#define AUDIO_VENDOR_NUM 0x1d6b /* Linux Foundation */ +#define AUDIO_PRODUCT_NUM 0x0101 /* Linux-USB Audio Gadget */ + +/*-------------------------------------------------------------------------*/ + +static struct usb_device_descriptor device_desc = { + .bLength = sizeof device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = __constant_cpu_to_le16(0x200), + + .bDeviceClass = USB_CLASS_PER_INTERFACE, + .bDeviceSubClass = 0, + .bDeviceProtocol = 0, + /* .bMaxPacketSize0 = f(hardware) */ + + /* Vendor and product id defaults change according to what configs + * we support. (As does bNumConfigurations.) These values can + * also be overridden by module parameters. + */ + .idVendor = __constant_cpu_to_le16(AUDIO_VENDOR_NUM), + .idProduct = __constant_cpu_to_le16(AUDIO_PRODUCT_NUM), + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +/** + * Handle USB audio endpoint set/get command in setup class request + */ + +static int audio_set_endpoint_req(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = c->cdev; + int value = -EOPNOTSUPP; + u16 ep = le16_to_cpu(ctrl->wIndex); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", + ctrl->bRequest, w_value, len, ep); + + switch (ctrl->bRequest) { + case SET_CUR: + value = 0; + break; + + case SET_MIN: + break; + + case SET_MAX: + break; + + case SET_RES: + break; + + case SET_MEM: + break; + + default: + break; + } + + return value; +} + +static int audio_get_endpoint_req(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = c->cdev; + int value = -EOPNOTSUPP; + u8 ep = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", + ctrl->bRequest, w_value, len, ep); + + switch (ctrl->bRequest) { + case GET_CUR: + case GET_MIN: + case GET_MAX: + case GET_RES: + value = 3; + break; + case GET_MEM: + break; + default: + break; + } + + return value; +} + +static int +audio_setup(struct usb_configuration *c, const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = c->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* composite driver infrastructure handles everything except + * Audio class messages; interface activation uses set_alt(). + */ + switch (ctrl->bRequestType) { + case USB_AUDIO_SET_ENDPOINT: + value = audio_set_endpoint_req(c, ctrl); + break; + + case USB_AUDIO_GET_ENDPOINT: + value = audio_get_endpoint_req(c, ctrl); + break; + + default: + ERROR(cdev, "Invalid control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + DBG(cdev, "Audio req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(cdev, "Audio response on err %d\n", value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + +/*-------------------------------------------------------------------------*/ + +static int __init audio_do_config(struct usb_configuration *c) +{ + /* FIXME alloc iConfiguration string, set it in c->strings */ + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + audio_bind_config(c); + + return 0; +} + +static struct usb_configuration audio_config_driver = { + .label = DRIVER_DESC, + .bind = audio_do_config, + .setup = audio_setup, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; + +/*-------------------------------------------------------------------------*/ + +static int __init audio_bind(struct usb_composite_dev *cdev) +{ + int gcnum; + int status; + + gcnum = usb_gadget_controller_number(cdev->gadget); + if (gcnum >= 0) + device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); + else { + ERROR(cdev, "controller '%s' not recognized; trying %s\n", + cdev->gadget->name, + audio_config_driver.label); + device_desc.bcdDevice = + __constant_cpu_to_le16(0x0300 | 0x0099); + } + + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + cdev->gadget->name); + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + device_desc.iManufacturer = status; + + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_PRODUCT_IDX].id = status; + device_desc.iProduct = status; + + status = usb_add_config(cdev, &audio_config_driver); + if (status < 0) + goto fail; + + INFO(cdev, "%s, version: %s\n", DRIVER_DESC, DRIVER_VERSION); + return 0; + +fail: + return status; +} + +static int __exit audio_unbind(struct usb_composite_dev *cdev) +{ + return 0; +} + +static struct usb_composite_driver audio_driver = { + .name = "g_audio", + .dev = &device_desc, + .strings = audio_strings, + .bind = audio_bind, + .unbind = __exit_p(audio_unbind), +}; + +static int __init init(void) +{ + return usb_composite_register(&audio_driver); +} +module_init(init); + +static void __exit cleanup(void) +{ + usb_composite_unregister(&audio_driver); +} +module_exit(cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Bryan Wu <cooloney@kernel.org>"); +MODULE_LICENSE("GPL"); + diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c index 38e531ecae4d..c7cb87a6fee2 100644 --- a/drivers/usb/gadget/ci13xxx_udc.c +++ b/drivers/usb/gadget/ci13xxx_udc.c @@ -1977,9 +1977,9 @@ static int ep_enable(struct usb_ep *ep, if (!list_empty(&mEp->qh[mEp->dir].queue)) warn("enabling a non-empty endpoint!"); - mEp->dir = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? TX : RX; - mEp->num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; - mEp->type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + mEp->dir = usb_endpoint_dir_in(desc) ? TX : RX; + mEp->num = usb_endpoint_num(desc); + mEp->type = usb_endpoint_type(desc); mEp->ep.maxpacket = __constant_le16_to_cpu(desc->wMaxPacketSize); diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index d006dc652e02..bd102f5052ba 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -293,15 +293,16 @@ static int __init eth_bind(struct usb_composite_dev *cdev) /* CDC Subset */ eth_config_driver.label = "CDC Subset/SAFE"; - device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM), - device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM), - device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; + device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM); + device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM); + if (!has_rndis()) + device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; } if (has_rndis()) { /* RNDIS plus ECM-or-Subset */ - device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM), - device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM), + device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM); + device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM); device_desc.bNumConfigurations = 2; } diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c new file mode 100644 index 000000000000..66527ba2d2ea --- /dev/null +++ b/drivers/usb/gadget/f_audio.c @@ -0,0 +1,707 @@ +/* + * f_audio.c -- USB Audio class function driver + * + * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> + * Copyright (C) 2008 Analog Devices, Inc + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <asm/atomic.h> + +#include "u_audio.h" + +#define OUT_EP_MAX_PACKET_SIZE 200 +static int req_buf_size = OUT_EP_MAX_PACKET_SIZE; +module_param(req_buf_size, int, S_IRUGO); +MODULE_PARM_DESC(req_buf_size, "ISO OUT endpoint request buffer size"); + +static int req_count = 256; +module_param(req_count, int, S_IRUGO); +MODULE_PARM_DESC(req_count, "ISO OUT endpoint request count"); + +static int audio_buf_size = 48000; +module_param(audio_buf_size, int, S_IRUGO); +MODULE_PARM_DESC(audio_buf_size, "Audio buffer size"); + +/* + * DESCRIPTORS ... most are static, but strings and full + * configuration descriptors are built on demand. + */ + +/* + * We have two interfaces- AudioControl and AudioStreaming + * TODO: only supcard playback currently + */ +#define F_AUDIO_AC_INTERFACE 0 +#define F_AUDIO_AS_INTERFACE 1 +#define F_AUDIO_NUM_INTERFACES 2 + +/* B.3.1 Standard AC Interface Descriptor */ +static struct usb_interface_descriptor ac_interface_desc __initdata = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, +}; + +DECLARE_USB_AC_HEADER_DESCRIPTOR(2); + +#define USB_DT_AC_HEADER_LENGH USB_DT_AC_HEADER_SIZE(F_AUDIO_NUM_INTERFACES) +/* B.3.2 Class-Specific AC Interface Descriptor */ +static struct usb_ac_header_descriptor_2 ac_header_desc = { + .bLength = USB_DT_AC_HEADER_LENGH, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = HEADER, + .bcdADC = __constant_cpu_to_le16(0x0100), + .wTotalLength = __constant_cpu_to_le16(USB_DT_AC_HEADER_LENGH), + .bInCollection = F_AUDIO_NUM_INTERFACES, + .baInterfaceNr = { + [0] = F_AUDIO_AC_INTERFACE, + [1] = F_AUDIO_AS_INTERFACE, + } +}; + +#define INPUT_TERMINAL_ID 1 +static struct usb_input_terminal_descriptor input_terminal_desc = { + .bLength = USB_DT_AC_INPUT_TERMINAL_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = INPUT_TERMINAL, + .bTerminalID = INPUT_TERMINAL_ID, + .wTerminalType = USB_AC_TERMINAL_STREAMING, + .bAssocTerminal = 0, + .wChannelConfig = 0x3, +}; + +DECLARE_USB_AC_FEATURE_UNIT_DESCRIPTOR(0); + +#define FEATURE_UNIT_ID 2 +static struct usb_ac_feature_unit_descriptor_0 feature_unit_desc = { + .bLength = USB_DT_AC_FEATURE_UNIT_SIZE(0), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = FEATURE_UNIT, + .bUnitID = FEATURE_UNIT_ID, + .bSourceID = INPUT_TERMINAL_ID, + .bControlSize = 2, + .bmaControls[0] = (FU_MUTE | FU_VOLUME), +}; + +static struct usb_audio_control mute_control = { + .list = LIST_HEAD_INIT(mute_control.list), + .name = "Mute Control", + .type = MUTE_CONTROL, + /* Todo: add real Mute control code */ + .set = generic_set_cmd, + .get = generic_get_cmd, +}; + +static struct usb_audio_control volume_control = { + .list = LIST_HEAD_INIT(volume_control.list), + .name = "Volume Control", + .type = VOLUME_CONTROL, + /* Todo: add real Volume control code */ + .set = generic_set_cmd, + .get = generic_get_cmd, +}; + +static struct usb_audio_control_selector feature_unit = { + .list = LIST_HEAD_INIT(feature_unit.list), + .id = FEATURE_UNIT_ID, + .name = "Mute & Volume Control", + .type = FEATURE_UNIT, + .desc = (struct usb_descriptor_header *)&feature_unit_desc, +}; + +#define OUTPUT_TERMINAL_ID 3 +static struct usb_output_terminal_descriptor output_terminal_desc = { + .bLength = USB_DT_AC_OUTPUT_TERMINAL_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = OUTPUT_TERMINAL, + .bTerminalID = OUTPUT_TERMINAL_ID, + .wTerminalType = USB_AC_OUTPUT_TERMINAL_SPEAKER, + .bAssocTerminal = FEATURE_UNIT_ID, + .bSourceID = FEATURE_UNIT_ID, +}; + +/* B.4.1 Standard AS Interface Descriptor */ +static struct usb_interface_descriptor as_interface_alt_0_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, +}; + +static struct usb_interface_descriptor as_interface_alt_1_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 1, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, +}; + +/* B.4.2 Class-Specific AS Interface Descriptor */ +static struct usb_as_header_descriptor as_header_desc = { + .bLength = USB_DT_AS_HEADER_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = AS_GENERAL, + .bTerminalLink = INPUT_TERMINAL_ID, + .bDelay = 1, + .wFormatTag = USB_AS_AUDIO_FORMAT_TYPE_I_PCM, +}; + +DECLARE_USB_AS_FORMAT_TYPE_I_DISCRETE_DESC(1); + +static struct usb_as_formate_type_i_discrete_descriptor_1 as_type_i_desc = { + .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = FORMAT_TYPE, + .bFormatType = USB_AS_FORMAT_TYPE_I, + .bSubframeSize = 2, + .bBitResolution = 16, + .bSamFreqType = 1, +}; + +/* Standard ISO OUT Endpoint Descriptor */ +static struct usb_endpoint_descriptor as_out_ep_desc __initdata = { + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE + | USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = __constant_cpu_to_le16(OUT_EP_MAX_PACKET_SIZE), + .bInterval = 4, +}; + +/* Class-specific AS ISO OUT Endpoint Descriptor */ +static struct usb_as_iso_endpoint_descriptor as_iso_out_desc __initdata = { + .bLength = USB_AS_ISO_ENDPOINT_DESC_SIZE, + .bDescriptorType = USB_DT_CS_ENDPOINT, + .bDescriptorSubtype = EP_GENERAL, + .bmAttributes = 1, + .bLockDelayUnits = 1, + .wLockDelay = __constant_cpu_to_le16(1), +}; + +static struct usb_descriptor_header *f_audio_desc[] __initdata = { + (struct usb_descriptor_header *)&ac_interface_desc, + (struct usb_descriptor_header *)&ac_header_desc, + + (struct usb_descriptor_header *)&input_terminal_desc, + (struct usb_descriptor_header *)&output_terminal_desc, + (struct usb_descriptor_header *)&feature_unit_desc, + + (struct usb_descriptor_header *)&as_interface_alt_0_desc, + (struct usb_descriptor_header *)&as_interface_alt_1_desc, + (struct usb_descriptor_header *)&as_header_desc, + + (struct usb_descriptor_header *)&as_type_i_desc, + + (struct usb_descriptor_header *)&as_out_ep_desc, + (struct usb_descriptor_header *)&as_iso_out_desc, + NULL, +}; + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 + +static char manufacturer[50]; + +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = DRIVER_DESC, + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *audio_strings[] = { + &stringtab_dev, + NULL, +}; + +/* + * This function is an ALSA sound card following USB Audio Class Spec 1.0. + */ + +/*-------------------------------------------------------------------------*/ +struct f_audio_buf { + u8 *buf; + int actual; + struct list_head list; +}; + +static struct f_audio_buf *f_audio_buffer_alloc(int buf_size) +{ + struct f_audio_buf *copy_buf; + + copy_buf = kzalloc(sizeof *copy_buf, GFP_ATOMIC); + if (!copy_buf) + return (struct f_audio_buf *)-ENOMEM; + + copy_buf->buf = kzalloc(buf_size, GFP_ATOMIC); + if (!copy_buf->buf) { + kfree(copy_buf); + return (struct f_audio_buf *)-ENOMEM; + } + + return copy_buf; +} + +static void f_audio_buffer_free(struct f_audio_buf *audio_buf) +{ + kfree(audio_buf->buf); + kfree(audio_buf); +} +/*-------------------------------------------------------------------------*/ + +struct f_audio { + struct gaudio card; + + /* endpoints handle full and/or high speeds */ + struct usb_ep *out_ep; + struct usb_endpoint_descriptor *out_desc; + + spinlock_t lock; + struct f_audio_buf *copy_buf; + struct work_struct playback_work; + struct list_head play_queue; + + /* Control Set command */ + struct list_head cs; + u8 set_cmd; + struct usb_audio_control *set_con; +}; + +static inline struct f_audio *func_to_audio(struct usb_function *f) +{ + return container_of(f, struct f_audio, card.func); +} + +/*-------------------------------------------------------------------------*/ + +static void f_audio_playback_work(struct work_struct *data) +{ + struct f_audio *audio = container_of(data, struct f_audio, + playback_work); + struct f_audio_buf *play_buf; + + spin_lock_irq(&audio->lock); + if (list_empty(&audio->play_queue)) { + spin_unlock_irq(&audio->lock); + return; + } + play_buf = list_first_entry(&audio->play_queue, + struct f_audio_buf, list); + list_del(&play_buf->list); + spin_unlock_irq(&audio->lock); + + u_audio_playback(&audio->card, play_buf->buf, play_buf->actual); + f_audio_buffer_free(play_buf); + + return; +} + +static int f_audio_out_ep_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_audio *audio = req->context; + struct usb_composite_dev *cdev = audio->card.func.config->cdev; + struct f_audio_buf *copy_buf = audio->copy_buf; + int err; + + if (!copy_buf) + return -EINVAL; + + /* Copy buffer is full, add it to the play_queue */ + if (audio_buf_size - copy_buf->actual < req->actual) { + list_add_tail(©_buf->list, &audio->play_queue); + schedule_work(&audio->playback_work); + copy_buf = f_audio_buffer_alloc(audio_buf_size); + if (copy_buf < 0) + return -ENOMEM; + } + + memcpy(copy_buf->buf + copy_buf->actual, req->buf, req->actual); + copy_buf->actual += req->actual; + audio->copy_buf = copy_buf; + + err = usb_ep_queue(ep, req, GFP_ATOMIC); + if (err) + ERROR(cdev, "%s queue req: %d\n", ep->name, err); + + return 0; + +} + +static void f_audio_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_audio *audio = req->context; + int status = req->status; + u32 data = 0; + struct usb_ep *out_ep = audio->out_ep; + + switch (status) { + + case 0: /* normal completion? */ + if (ep == out_ep) + f_audio_out_ep_complete(ep, req); + else if (audio->set_con) { + memcpy(&data, req->buf, req->length); + audio->set_con->set(audio->set_con, audio->set_cmd, + le16_to_cpu(data)); + audio->set_con = NULL; + } + break; + default: + break; + } +} + +static int audio_set_intf_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct f_audio *audio = func_to_audio(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + u8 con_sel = (w_value >> 8) & 0xFF; + u8 cmd = (ctrl->bRequest & 0x0F); + struct usb_audio_control_selector *cs; + struct usb_audio_control *con; + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", + ctrl->bRequest, w_value, len, id); + + list_for_each_entry(cs, &audio->cs, list) { + if (cs->id == id) { + list_for_each_entry(con, &cs->control, list) { + if (con->type == con_sel) { + audio->set_con = con; + break; + } + } + break; + } + } + + audio->set_cmd = cmd; + req->context = audio; + req->complete = f_audio_complete; + + return len; +} + +static int audio_get_intf_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct f_audio *audio = func_to_audio(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + u8 con_sel = (w_value >> 8) & 0xFF; + u8 cmd = (ctrl->bRequest & 0x0F); + struct usb_audio_control_selector *cs; + struct usb_audio_control *con; + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", + ctrl->bRequest, w_value, len, id); + + list_for_each_entry(cs, &audio->cs, list) { + if (cs->id == id) { + list_for_each_entry(con, &cs->control, list) { + if (con->type == con_sel && con->get) { + value = con->get(con, cmd); + break; + } + } + break; + } + } + + req->context = audio; + req->complete = f_audio_complete; + memcpy(req->buf, &value, len); + + return len; +} + +static int +f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* composite driver infrastructure handles everything except + * Audio class messages; interface activation uses set_alt(). + */ + switch (ctrl->bRequestType) { + case USB_AUDIO_SET_INTF: + value = audio_set_intf_req(f, ctrl); + break; + + case USB_AUDIO_GET_INTF: + value = audio_get_intf_req(f, ctrl); + break; + + default: + ERROR(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + DBG(cdev, "audio req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(cdev, "audio response on err %d\n", value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + +static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_audio *audio = func_to_audio(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_ep *out_ep = audio->out_ep; + struct usb_request *req; + int i = 0, err = 0; + + DBG(cdev, "intf %d, alt %d\n", intf, alt); + + if (intf == 1) { + if (alt == 1) { + usb_ep_enable(out_ep, audio->out_desc); + out_ep->driver_data = audio; + audio->copy_buf = f_audio_buffer_alloc(audio_buf_size); + + /* + * allocate a bunch of read buffers + * and queue them all at once. + */ + for (i = 0; i < req_count && err == 0; i++) { + req = usb_ep_alloc_request(out_ep, GFP_ATOMIC); + if (req) { + req->buf = kzalloc(req_buf_size, + GFP_ATOMIC); + if (req->buf) { + req->length = req_buf_size; + req->context = audio; + req->complete = + f_audio_complete; + err = usb_ep_queue(out_ep, + req, GFP_ATOMIC); + if (err) + ERROR(cdev, + "%s queue req: %d\n", + out_ep->name, err); + } else + err = -ENOMEM; + } else + err = -ENOMEM; + } + + } else { + struct f_audio_buf *copy_buf = audio->copy_buf; + if (copy_buf) { + list_add_tail(©_buf->list, + &audio->play_queue); + schedule_work(&audio->playback_work); + } + } + } + + return err; +} + +static void f_audio_disable(struct usb_function *f) +{ + return; +} + +/*-------------------------------------------------------------------------*/ + +static void f_audio_build_desc(struct f_audio *audio) +{ + struct gaudio *card = &audio->card; + u8 *sam_freq; + int rate; + + /* Set channel numbers */ + input_terminal_desc.bNrChannels = u_audio_get_playback_channels(card); + as_type_i_desc.bNrChannels = u_audio_get_playback_channels(card); + + /* Set sample rates */ + rate = u_audio_get_playback_rate(card); + sam_freq = as_type_i_desc.tSamFreq[0]; + memcpy(sam_freq, &rate, 3); + + /* Todo: Set Sample bits and other parameters */ + + return; +} + +/* audio function driver setup/binding */ +static int __init +f_audio_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_audio *audio = func_to_audio(f); + int status; + struct usb_ep *ep; + + f_audio_build_desc(audio); + + /* allocate instance-specific interface IDs, and patch descriptors */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + ac_interface_desc.bInterfaceNumber = status; + + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + as_interface_alt_0_desc.bInterfaceNumber = status; + as_interface_alt_1_desc.bInterfaceNumber = status; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &as_out_ep_desc); + if (!ep) + goto fail; + audio->out_ep = ep; + ep->driver_data = cdev; /* claim */ + + status = -ENOMEM; + + /* supcard all relevant hardware speeds... we expect that when + * hardware is dual speed, all bulk-capable endpoints work at + * both speeds + */ + + /* copy descriptors, and track endpoint copies */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + c->highspeed = true; + f->hs_descriptors = usb_copy_descriptors(f_audio_desc); + } else + f->descriptors = usb_copy_descriptors(f_audio_desc); + + return 0; + +fail: + + return status; +} + +static void +f_audio_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_audio *audio = func_to_audio(f); + + usb_free_descriptors(f->descriptors); + kfree(audio); +} + +/*-------------------------------------------------------------------------*/ + +/* Todo: add more control selecotor dynamically */ +int __init control_selector_init(struct f_audio *audio) +{ + INIT_LIST_HEAD(&audio->cs); + list_add(&feature_unit.list, &audio->cs); + + INIT_LIST_HEAD(&feature_unit.control); + list_add(&mute_control.list, &feature_unit.control); + list_add(&volume_control.list, &feature_unit.control); + + volume_control.data[_CUR] = 0xffc0; + volume_control.data[_MIN] = 0xe3a0; + volume_control.data[_MAX] = 0xfff0; + volume_control.data[_RES] = 0x0030; + + return 0; +} + +/** + * audio_bind_config - add USB audio fucntion to a configuration + * @c: the configuration to supcard the USB audio function + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + */ +int __init audio_bind_config(struct usb_configuration *c) +{ + struct f_audio *audio; + int status; + + /* allocate and initialize one new instance */ + audio = kzalloc(sizeof *audio, GFP_KERNEL); + if (!audio) + return -ENOMEM; + + audio->card.func.name = "g_audio"; + audio->card.gadget = c->cdev->gadget; + + INIT_LIST_HEAD(&audio->play_queue); + spin_lock_init(&audio->lock); + + /* set up ASLA audio devices */ + status = gaudio_setup(&audio->card); + if (status < 0) + goto setup_fail; + + audio->card.func.strings = audio_strings; + audio->card.func.bind = f_audio_bind; + audio->card.func.unbind = f_audio_unbind; + audio->card.func.set_alt = f_audio_set_alt; + audio->card.func.setup = f_audio_setup; + audio->card.func.disable = f_audio_disable; + audio->out_desc = &as_out_ep_desc; + + control_selector_init(audio); + + INIT_WORK(&audio->playback_work, f_audio_playback_work); + + status = usb_add_function(c, &audio->card.func); + if (status) + goto add_fail; + + INFO(c->cdev, "audio_buf_size %d, req_buf_size %d, req_count %d\n", + audio_buf_size, req_buf_size, req_count); + + return status; + +add_fail: + gaudio_cleanup(&audio->card); +setup_fail: + kfree(audio); + return status; +} diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c index c1abeb89b413..96fb118355b0 100644 --- a/drivers/usb/gadget/f_phonet.c +++ b/drivers/usb/gadget/f_phonet.c @@ -188,8 +188,7 @@ static struct usb_descriptor_header *hs_pn_function[] = { static int pn_net_open(struct net_device *dev) { - if (netif_carrier_ok(dev)) - netif_wake_queue(dev); + netif_wake_queue(dev); return 0; } @@ -219,8 +218,7 @@ static void pn_tx_complete(struct usb_ep *ep, struct usb_request *req) } dev_kfree_skb_any(skb); - if (netif_carrier_ok(dev)) - netif_wake_queue(dev); + netif_wake_queue(dev); } static int pn_net_xmit(struct sk_buff *skb, struct net_device *dev) @@ -255,7 +253,7 @@ out_unlock: spin_unlock_irqrestore(&port->lock, flags); out: if (unlikely(skb)) { - dev_kfree_skb_any(skb); + dev_kfree_skb(skb); dev->stats.tx_dropped++; } return 0; @@ -383,7 +381,6 @@ static void __pn_reset(struct usb_function *f) struct phonet_port *port = netdev_priv(dev); netif_carrier_off(dev); - netif_stop_queue(dev); port->usb = NULL; usb_ep_disable(fp->out_ep); @@ -427,8 +424,6 @@ static int pn_set_alt(struct usb_function *f, unsigned intf, unsigned alt) fp->in_ep->driver_data = fp; netif_carrier_on(dev); - if (netif_running(dev)) - netif_wake_queue(dev); for (i = 0; i < phonet_rxq_size; i++) pn_rx_submit(fp, fp->out_reqv[i], GFP_ATOMIC); } @@ -574,9 +569,10 @@ static struct net_device *dev; int __init phonet_bind_config(struct usb_configuration *c) { struct f_phonet *fp; - int err; + int err, size; - fp = kzalloc(sizeof(*fp), GFP_KERNEL); + size = sizeof(*fp) + (phonet_rxq_size * sizeof(struct usb_request *)); + fp = kzalloc(size, GFP_KERNEL); if (!fp) return -ENOMEM; @@ -601,16 +597,13 @@ int __init gphonet_setup(struct usb_gadget *gadget) /* Create net device */ BUG_ON(dev); - dev = alloc_netdev(sizeof(*port) - + (phonet_rxq_size * sizeof(struct usb_request *)), - "upnlink%d", pn_net_setup); + dev = alloc_netdev(sizeof(*port), "upnlink%d", pn_net_setup); if (!dev) return -ENOMEM; port = netdev_priv(dev); spin_lock_init(&port->lock); netif_carrier_off(dev); - netif_stop_queue(dev); SET_NETDEV_DEV(dev, &gadget->dev); err = register_netdev(dev); diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 3279a4726042..424a37c5773f 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -475,7 +475,9 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt) if (rndis->port.in_ep->driver_data) { DBG(cdev, "reset rndis\n"); gether_disconnect(&rndis->port); - } else { + } + + if (!rndis->port.in) { DBG(cdev, "init rndis\n"); rndis->port.in = ep_choose(cdev->gadget, rndis->hs.in, rndis->fs.in); diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index 381a53b3e11c..1e6aa504d58a 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -248,6 +248,8 @@ #include <linux/freezer.h> #include <linux/utsname.h> +#include <asm/unaligned.h> + #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -799,29 +801,9 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) /* Routines for unaligned data access */ -static u16 get_be16(u8 *buf) -{ - return ((u16) buf[0] << 8) | ((u16) buf[1]); -} - -static u32 get_be32(u8 *buf) -{ - return ((u32) buf[0] << 24) | ((u32) buf[1] << 16) | - ((u32) buf[2] << 8) | ((u32) buf[3]); -} - -static void put_be16(u8 *buf, u16 val) -{ - buf[0] = val >> 8; - buf[1] = val; -} - -static void put_be32(u8 *buf, u32 val) +static u32 get_unaligned_be24(u8 *buf) { - buf[0] = val >> 24; - buf[1] = val >> 16; - buf[2] = val >> 8; - buf[3] = val & 0xff; + return 0xffffff & (u32) get_unaligned_be32(buf - 1); } @@ -1582,9 +1564,9 @@ static int do_read(struct fsg_dev *fsg) /* Get the starting Logical Block Address and check that it's * not too big */ if (fsg->cmnd[0] == SC_READ_6) - lba = (fsg->cmnd[1] << 16) | get_be16(&fsg->cmnd[2]); + lba = get_unaligned_be24(&fsg->cmnd[1]); else { - lba = get_be32(&fsg->cmnd[2]); + lba = get_unaligned_be32(&fsg->cmnd[2]); /* We allow DPO (Disable Page Out = don't save data in the * cache) and FUA (Force Unit Access = don't read from the @@ -1717,9 +1699,9 @@ static int do_write(struct fsg_dev *fsg) /* Get the starting Logical Block Address and check that it's * not too big */ if (fsg->cmnd[0] == SC_WRITE_6) - lba = (fsg->cmnd[1] << 16) | get_be16(&fsg->cmnd[2]); + lba = get_unaligned_be24(&fsg->cmnd[1]); else { - lba = get_be32(&fsg->cmnd[2]); + lba = get_unaligned_be32(&fsg->cmnd[2]); /* We allow DPO (Disable Page Out = don't save data in the * cache) and FUA (Force Unit Access = write directly to the @@ -1940,7 +1922,7 @@ static int do_verify(struct fsg_dev *fsg) /* Get the starting Logical Block Address and check that it's * not too big */ - lba = get_be32(&fsg->cmnd[2]); + lba = get_unaligned_be32(&fsg->cmnd[2]); if (lba >= curlun->num_sectors) { curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; return -EINVAL; @@ -1953,7 +1935,7 @@ static int do_verify(struct fsg_dev *fsg) return -EINVAL; } - verification_length = get_be16(&fsg->cmnd[7]); + verification_length = get_unaligned_be16(&fsg->cmnd[7]); if (unlikely(verification_length == 0)) return -EIO; // No default reply @@ -2103,7 +2085,7 @@ static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) memset(buf, 0, 18); buf[0] = valid | 0x70; // Valid, current error buf[2] = SK(sd); - put_be32(&buf[3], sdinfo); // Sense information + put_unaligned_be32(sdinfo, &buf[3]); /* Sense information */ buf[7] = 18 - 8; // Additional sense length buf[12] = ASC(sd); buf[13] = ASCQ(sd); @@ -2114,7 +2096,7 @@ static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh) { struct lun *curlun = fsg->curlun; - u32 lba = get_be32(&fsg->cmnd[2]); + u32 lba = get_unaligned_be32(&fsg->cmnd[2]); int pmi = fsg->cmnd[8]; u8 *buf = (u8 *) bh->buf; @@ -2124,8 +2106,9 @@ static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh) return -EINVAL; } - put_be32(&buf[0], curlun->num_sectors - 1); // Max logical block - put_be32(&buf[4], 512); // Block length + put_unaligned_be32(curlun->num_sectors - 1, &buf[0]); + /* Max logical block */ + put_unaligned_be32(512, &buf[4]); /* Block length */ return 8; } @@ -2144,7 +2127,7 @@ static void store_cdrom_address(u8 *dest, int msf, u32 addr) dest[0] = 0; /* Reserved */ } else { /* Absolute sector */ - put_be32(dest, addr); + put_unaligned_be32(addr, dest); } } @@ -2152,7 +2135,7 @@ static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh) { struct lun *curlun = fsg->curlun; int msf = fsg->cmnd[1] & 0x02; - u32 lba = get_be32(&fsg->cmnd[2]); + u32 lba = get_unaligned_be32(&fsg->cmnd[2]); u8 *buf = (u8 *) bh->buf; if ((fsg->cmnd[1] & ~0x02) != 0) { /* Mask away MSF */ @@ -2252,10 +2235,13 @@ static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) buf[2] = 0x04; // Write cache enable, // Read cache not disabled // No cache retention priorities - put_be16(&buf[4], 0xffff); // Don't disable prefetch - // Minimum prefetch = 0 - put_be16(&buf[8], 0xffff); // Maximum prefetch - put_be16(&buf[10], 0xffff); // Maximum prefetch ceiling + put_unaligned_be16(0xffff, &buf[4]); + /* Don't disable prefetch */ + /* Minimum prefetch = 0 */ + put_unaligned_be16(0xffff, &buf[8]); + /* Maximum prefetch */ + put_unaligned_be16(0xffff, &buf[10]); + /* Maximum prefetch ceiling */ } buf += 12; } @@ -2272,7 +2258,7 @@ static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) if (mscmnd == SC_MODE_SENSE_6) buf0[0] = len - 1; else - put_be16(buf0, len - 2); + put_unaligned_be16(len - 2, buf0); return len; } @@ -2360,9 +2346,10 @@ static int do_read_format_capacities(struct fsg_dev *fsg, buf[3] = 8; // Only the Current/Maximum Capacity Descriptor buf += 4; - put_be32(&buf[0], curlun->num_sectors); // Number of blocks - put_be32(&buf[4], 512); // Block length - buf[4] = 0x02; // Current capacity + put_unaligned_be32(curlun->num_sectors, &buf[0]); + /* Number of blocks */ + put_unaligned_be32(512, &buf[4]); /* Block length */ + buf[4] = 0x02; /* Current capacity */ return 12; } @@ -2882,7 +2869,7 @@ static int do_scsi_command(struct fsg_dev *fsg) break; case SC_MODE_SELECT_10: - fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]); + fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST, (1<<1) | (3<<7), 0, "MODE SELECT(10)")) == 0) @@ -2898,7 +2885,7 @@ static int do_scsi_command(struct fsg_dev *fsg) break; case SC_MODE_SENSE_10: - fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]); + fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, (1<<1) | (1<<2) | (3<<7), 0, "MODE SENSE(10)")) == 0) @@ -2923,7 +2910,8 @@ static int do_scsi_command(struct fsg_dev *fsg) break; case SC_READ_10: - fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]) << 9; + fsg->data_size_from_cmnd = + get_unaligned_be16(&fsg->cmnd[7]) << 9; if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, (1<<1) | (0xf<<2) | (3<<7), 1, "READ(10)")) == 0) @@ -2931,7 +2919,8 @@ static int do_scsi_command(struct fsg_dev *fsg) break; case SC_READ_12: - fsg->data_size_from_cmnd = get_be32(&fsg->cmnd[6]) << 9; + fsg->data_size_from_cmnd = + get_unaligned_be32(&fsg->cmnd[6]) << 9; if ((reply = check_command(fsg, 12, DATA_DIR_TO_HOST, (1<<1) | (0xf<<2) | (0xf<<6), 1, "READ(12)")) == 0) @@ -2949,7 +2938,7 @@ static int do_scsi_command(struct fsg_dev *fsg) case SC_READ_HEADER: if (!mod_data.cdrom) goto unknown_cmnd; - fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]); + fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, (3<<7) | (0x1f<<1), 1, "READ HEADER")) == 0) @@ -2959,7 +2948,7 @@ static int do_scsi_command(struct fsg_dev *fsg) case SC_READ_TOC: if (!mod_data.cdrom) goto unknown_cmnd; - fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]); + fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, (7<<6) | (1<<1), 1, "READ TOC")) == 0) @@ -2967,7 +2956,7 @@ static int do_scsi_command(struct fsg_dev *fsg) break; case SC_READ_FORMAT_CAPACITIES: - fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]); + fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]); if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST, (3<<7), 1, "READ FORMAT CAPACITIES")) == 0) @@ -3025,7 +3014,8 @@ static int do_scsi_command(struct fsg_dev *fsg) break; case SC_WRITE_10: - fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]) << 9; + fsg->data_size_from_cmnd = + get_unaligned_be16(&fsg->cmnd[7]) << 9; if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST, (1<<1) | (0xf<<2) | (3<<7), 1, "WRITE(10)")) == 0) @@ -3033,7 +3023,8 @@ static int do_scsi_command(struct fsg_dev *fsg) break; case SC_WRITE_12: - fsg->data_size_from_cmnd = get_be32(&fsg->cmnd[6]) << 9; + fsg->data_size_from_cmnd = + get_unaligned_be32(&fsg->cmnd[6]) << 9; if ((reply = check_command(fsg, 12, DATA_DIR_FROM_HOST, (1<<1) | (0xf<<2) | (0xf<<6), 1, "WRITE(12)")) == 0) diff --git a/drivers/usb/gadget/fsl_mx3_udc.c b/drivers/usb/gadget/fsl_mx3_udc.c new file mode 100644 index 000000000000..4bc2bf3d602e --- /dev/null +++ b/drivers/usb/gadget/fsl_mx3_udc.c @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2009 + * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de> + * + * Description: + * Helper routines for i.MX3x SoCs from Freescale, needed by the fsl_usb2_udc.c + * driver to function correctly on these systems. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/fsl_devices.h> +#include <linux/platform_device.h> + +static struct clk *mxc_ahb_clk; +static struct clk *mxc_usb_clk; + +int fsl_udc_clk_init(struct platform_device *pdev) +{ + struct fsl_usb2_platform_data *pdata; + unsigned long freq; + int ret; + + pdata = pdev->dev.platform_data; + + mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb"); + if (IS_ERR(mxc_ahb_clk)) + return PTR_ERR(mxc_ahb_clk); + + ret = clk_enable(mxc_ahb_clk); + if (ret < 0) { + dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n"); + goto eenahb; + } + + /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ + mxc_usb_clk = clk_get(&pdev->dev, "usb"); + if (IS_ERR(mxc_usb_clk)) { + dev_err(&pdev->dev, "clk_get(\"usb\") failed\n"); + ret = PTR_ERR(mxc_usb_clk); + goto egusb; + } + + freq = clk_get_rate(mxc_usb_clk); + if (pdata->phy_mode != FSL_USB2_PHY_ULPI && + (freq < 59999000 || freq > 60001000)) { + dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq); + goto eclkrate; + } + + ret = clk_enable(mxc_usb_clk); + if (ret < 0) { + dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n"); + goto eenusb; + } + + return 0; + +eenusb: +eclkrate: + clk_put(mxc_usb_clk); + mxc_usb_clk = NULL; +egusb: + clk_disable(mxc_ahb_clk); +eenahb: + clk_put(mxc_ahb_clk); + return ret; +} + +void fsl_udc_clk_finalize(struct platform_device *pdev) +{ + struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + + /* ULPI transceivers don't need usbpll */ + if (pdata->phy_mode == FSL_USB2_PHY_ULPI) { + clk_disable(mxc_usb_clk); + clk_put(mxc_usb_clk); + mxc_usb_clk = NULL; + } +} + +void fsl_udc_clk_release(void) +{ + if (mxc_usb_clk) { + clk_disable(mxc_usb_clk); + clk_put(mxc_usb_clk); + } + clk_disable(mxc_ahb_clk); + clk_put(mxc_ahb_clk); +} diff --git a/drivers/usb/gadget/fsl_usb2_udc.c b/drivers/usb/gadget/fsl_udc_core.c index 9d7b95d4e3d2..42a74b8a0bb8 100644 --- a/drivers/usb/gadget/fsl_usb2_udc.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -38,6 +38,7 @@ #include <linux/platform_device.h> #include <linux/fsl_devices.h> #include <linux/dmapool.h> +#include <linux/delay.h> #include <asm/byteorder.h> #include <asm/io.h> @@ -57,7 +58,9 @@ static const char driver_name[] = "fsl-usb2-udc"; static const char driver_desc[] = DRIVER_DESC; static struct usb_dr_device *dr_regs; +#ifndef CONFIG_ARCH_MXC static struct usb_sys_interface *usb_sys_regs; +#endif /* it is initialized in probe() */ static struct fsl_udc *udc_controller = NULL; @@ -174,10 +177,34 @@ static void nuke(struct fsl_ep *ep, int status) static int dr_controller_setup(struct fsl_udc *udc) { - unsigned int tmp = 0, portctrl = 0, ctrl = 0; + unsigned int tmp, portctrl; +#ifndef CONFIG_ARCH_MXC + unsigned int ctrl; +#endif unsigned long timeout; #define FSL_UDC_RESET_TIMEOUT 1000 + /* Config PHY interface */ + portctrl = fsl_readl(&dr_regs->portsc1); + portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH); + switch (udc->phy_mode) { + case FSL_USB2_PHY_ULPI: + portctrl |= PORTSCX_PTS_ULPI; + break; + case FSL_USB2_PHY_UTMI_WIDE: + portctrl |= PORTSCX_PTW_16BIT; + /* fall through */ + case FSL_USB2_PHY_UTMI: + portctrl |= PORTSCX_PTS_UTMI; + break; + case FSL_USB2_PHY_SERIAL: + portctrl |= PORTSCX_PTS_FSLS; + break; + default: + return -EINVAL; + } + fsl_writel(portctrl, &dr_regs->portsc1); + /* Stop and reset the usb controller */ tmp = fsl_readl(&dr_regs->usbcmd); tmp &= ~USB_CMD_RUN_STOP; @@ -215,31 +242,12 @@ static int dr_controller_setup(struct fsl_udc *udc) udc->ep_qh, (int)tmp, fsl_readl(&dr_regs->endpointlistaddr)); - /* Config PHY interface */ - portctrl = fsl_readl(&dr_regs->portsc1); - portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH); - switch (udc->phy_mode) { - case FSL_USB2_PHY_ULPI: - portctrl |= PORTSCX_PTS_ULPI; - break; - case FSL_USB2_PHY_UTMI_WIDE: - portctrl |= PORTSCX_PTW_16BIT; - /* fall through */ - case FSL_USB2_PHY_UTMI: - portctrl |= PORTSCX_PTS_UTMI; - break; - case FSL_USB2_PHY_SERIAL: - portctrl |= PORTSCX_PTS_FSLS; - break; - default: - return -EINVAL; - } - fsl_writel(portctrl, &dr_regs->portsc1); - /* Config control enable i/o output, cpu endian register */ +#ifndef CONFIG_ARCH_MXC ctrl = __raw_readl(&usb_sys_regs->control); ctrl |= USB_CTRL_IOENB; __raw_writel(ctrl, &usb_sys_regs->control); +#endif #if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) /* Turn on cache snooping hardware, since some PowerPC platforms @@ -2043,6 +2051,7 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, size -= t; next += t; +#ifndef CONFIG_ARCH_MXC tmp_reg = usb_sys_regs->snoop1; t = scnprintf(next, size, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg); size -= t; @@ -2053,6 +2062,7 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, tmp_reg); size -= t; next += t; +#endif /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */ ep = &udc->eps[0]; @@ -2263,14 +2273,21 @@ static int __init fsl_udc_probe(struct platform_device *pdev) goto err_kfree; } - dr_regs = ioremap(res->start, res->end - res->start + 1); + dr_regs = ioremap(res->start, resource_size(res)); if (!dr_regs) { ret = -ENOMEM; goto err_release_mem_region; } +#ifndef CONFIG_ARCH_MXC usb_sys_regs = (struct usb_sys_interface *) ((u32)dr_regs + USB_DR_SYS_OFFSET); +#endif + + /* Initialize USB clocks */ + ret = fsl_udc_clk_init(pdev); + if (ret < 0) + goto err_iounmap_noclk; /* Read Device Controller Capability Parameters register */ dccparams = fsl_readl(&dr_regs->dccparams); @@ -2308,6 +2325,8 @@ static int __init fsl_udc_probe(struct platform_device *pdev) * leave usbintr reg untouched */ dr_controller_setup(udc_controller); + fsl_udc_clk_finalize(pdev); + /* Setup gadget structure */ udc_controller->gadget.ops = &fsl_gadget_ops; udc_controller->gadget.is_dualspeed = 1; @@ -2362,6 +2381,8 @@ err_unregister: err_free_irq: free_irq(udc_controller->irq, udc_controller); err_iounmap: + fsl_udc_clk_release(); +err_iounmap_noclk: iounmap(dr_regs); err_release_mem_region: release_mem_region(res->start, res->end - res->start + 1); @@ -2384,6 +2405,8 @@ static int __exit fsl_udc_remove(struct platform_device *pdev) return -ENODEV; udc_controller->done = &done; + fsl_udc_clk_release(); + /* DR has been stopped in usb_gadget_unregister_driver() */ remove_proc_file(); diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h index e63ef12645f5..20aeceed48c7 100644 --- a/drivers/usb/gadget/fsl_usb2_udc.h +++ b/drivers/usb/gadget/fsl_usb2_udc.h @@ -563,4 +563,22 @@ static void dump_msg(const char *label, const u8 * buf, unsigned int length) * 2 + ((windex & USB_DIR_IN) ? 1 : 0)) #define get_pipe_by_ep(EP) (ep_index(EP) * 2 + ep_is_in(EP)) +struct platform_device; +#ifdef CONFIG_ARCH_MXC +int fsl_udc_clk_init(struct platform_device *pdev); +void fsl_udc_clk_finalize(struct platform_device *pdev); +void fsl_udc_clk_release(void); +#else +static inline int fsl_udc_clk_init(struct platform_device *pdev) +{ + return 0; +} +static inline void fsl_udc_clk_finalize(struct platform_device *pdev) +{ +} +static inline void fsl_udc_clk_release(void) +{ +} +#endif + #endif diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h index ec6d439a2aa5..8e0e9a0b7364 100644 --- a/drivers/usb/gadget/gadget_chips.h +++ b/drivers/usb/gadget/gadget_chips.h @@ -137,6 +137,12 @@ #define gadget_is_musbhdrc(g) 0 #endif +#ifdef CONFIG_USB_GADGET_LANGWELL +#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name)) +#else +#define gadget_is_langwell(g) 0 +#endif + /* from Montavista kernel (?) */ #ifdef CONFIG_USB_GADGET_MPC8272 #define gadget_is_mpc8272(g) !strcmp("mpc8272_udc", (g)->name) @@ -231,6 +237,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget) return 0x22; else if (gadget_is_ci13xxx(gadget)) return 0x23; + else if (gadget_is_langwell(gadget)) + return 0x24; return -ENOENT; } diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index de010c939dbb..112bb40a427c 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -110,10 +110,10 @@ goku_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) return -EINVAL; if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) return -ESHUTDOWN; - if (ep->num != (desc->bEndpointAddress & 0x0f)) + if (ep->num != usb_endpoint_num(desc)) return -EINVAL; - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + switch (usb_endpoint_type(desc)) { case USB_ENDPOINT_XFER_BULK: case USB_ENDPOINT_XFER_INT: break; @@ -142,7 +142,7 @@ goku_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) /* ep1/ep2 dma direction is chosen early; it works in the other * direction, with pio. be cautious with out-dma. */ - ep->is_in = (USB_DIR_IN & desc->bEndpointAddress) != 0; + ep->is_in = usb_endpoint_dir_in(desc); if (ep->is_in) { mode |= 1; ep->dma = (use_dma != 0) && (ep->num == UDC_MSTRD_ENDPOINT); diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c index 168658b4b4e2..c52a681f376c 100644 --- a/drivers/usb/gadget/imx_udc.c +++ b/drivers/usb/gadget/imx_udc.c @@ -415,6 +415,13 @@ static int write_packet(struct imx_ep_struct *imx_ep, struct imx_request *req) u8 *buf; int length, count, temp; + if (unlikely(__raw_readl(imx_ep->imx_usb->base + + USB_EP_STAT(EP_NO(imx_ep))) & EPSTAT_ZLPS)) { + D_TRX(imx_ep->imx_usb->dev, "<%s> zlp still queued in EP %s\n", + __func__, imx_ep->ep.name); + return -1; + } + buf = req->req.buf + req->req.actual; prefetch(buf); @@ -734,9 +741,12 @@ static struct usb_request *imx_ep_alloc_request { struct imx_request *req; + if (!usb_ep) + return NULL; + req = kzalloc(sizeof *req, gfp_flags); - if (!req || !usb_ep) - return 0; + if (!req) + return NULL; INIT_LIST_HEAD(&req->queue); req->in_use = 0; diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index d20937f28a19..7d33f50b5874 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -384,9 +384,8 @@ ep_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr) return value; /* halt any endpoint by doing a "wrong direction" i/o call */ - if (data->desc.bEndpointAddress & USB_DIR_IN) { - if ((data->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) - == USB_ENDPOINT_XFER_ISOC) + if (usb_endpoint_dir_in(&data->desc)) { + if (usb_endpoint_xfer_isoc(&data->desc)) return -EINVAL; DBG (data->dev, "%s halt\n", data->name); spin_lock_irq (&data->dev->lock); @@ -428,9 +427,8 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) return value; /* halt any endpoint by doing a "wrong direction" i/o call */ - if (!(data->desc.bEndpointAddress & USB_DIR_IN)) { - if ((data->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) - == USB_ENDPOINT_XFER_ISOC) + if (!usb_endpoint_dir_in(&data->desc)) { + if (usb_endpoint_xfer_isoc(&data->desc)) return -EINVAL; DBG (data->dev, "%s halt\n", data->name); spin_lock_irq (&data->dev->lock); @@ -691,7 +689,7 @@ ep_aio_read(struct kiocb *iocb, const struct iovec *iov, struct ep_data *epdata = iocb->ki_filp->private_data; char *buf; - if (unlikely(epdata->desc.bEndpointAddress & USB_DIR_IN)) + if (unlikely(usb_endpoint_dir_in(&epdata->desc))) return -EINVAL; buf = kmalloc(iocb->ki_left, GFP_KERNEL); @@ -711,7 +709,7 @@ ep_aio_write(struct kiocb *iocb, const struct iovec *iov, size_t len = 0; int i = 0; - if (unlikely(!(epdata->desc.bEndpointAddress & USB_DIR_IN))) + if (unlikely(!usb_endpoint_dir_in(&epdata->desc))) return -EINVAL; buf = kmalloc(iocb->ki_left, GFP_KERNEL); diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c new file mode 100644 index 000000000000..a3913519fd58 --- /dev/null +++ b/drivers/usb/gadget/langwell_udc.c @@ -0,0 +1,3372 @@ +/* + * Intel Langwell USB Device Controller driver + * Copyright (C) 2008-2009, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + + +/* #undef DEBUG */ +/* #undef VERBOSE */ + +#if defined(CONFIG_USB_LANGWELL_OTG) +#define OTG_TRANSCEIVER +#endif + + +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/timer.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/usb/otg.h> +#include <linux/pm.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <asm/system.h> +#include <asm/unaligned.h> + +#include "langwell_udc.h" + + +#define DRIVER_DESC "Intel Langwell USB Device Controller driver" +#define DRIVER_VERSION "16 May 2009" + +static const char driver_name[] = "langwell_udc"; +static const char driver_desc[] = DRIVER_DESC; + + +/* controller device global variable */ +static struct langwell_udc *the_controller; + +/* for endpoint 0 operations */ +static const struct usb_endpoint_descriptor +langwell_ep0_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0, + .bmAttributes = USB_ENDPOINT_XFER_CONTROL, + .wMaxPacketSize = EP0_MAX_PKT_SIZE, +}; + + +/*-------------------------------------------------------------------------*/ +/* debugging */ + +#ifdef DEBUG +#define DBG(dev, fmt, args...) \ + pr_debug("%s %s: " fmt , driver_name, \ + pci_name(dev->pdev), ## args) +#else +#define DBG(dev, fmt, args...) \ + do { } while (0) +#endif /* DEBUG */ + + +#ifdef VERBOSE +#define VDBG DBG +#else +#define VDBG(dev, fmt, args...) \ + do { } while (0) +#endif /* VERBOSE */ + + +#define ERROR(dev, fmt, args...) \ + pr_err("%s %s: " fmt , driver_name, \ + pci_name(dev->pdev), ## args) + +#define WARNING(dev, fmt, args...) \ + pr_warning("%s %s: " fmt , driver_name, \ + pci_name(dev->pdev), ## args) + +#define INFO(dev, fmt, args...) \ + pr_info("%s %s: " fmt , driver_name, \ + pci_name(dev->pdev), ## args) + + +#ifdef VERBOSE +static inline void print_all_registers(struct langwell_udc *dev) +{ + int i; + + /* Capability Registers */ + printk(KERN_DEBUG "Capability Registers (offset: " + "0x%04x, length: 0x%08x)\n", + CAP_REG_OFFSET, + (u32)sizeof(struct langwell_cap_regs)); + printk(KERN_DEBUG "caplength=0x%02x\n", + readb(&dev->cap_regs->caplength)); + printk(KERN_DEBUG "hciversion=0x%04x\n", + readw(&dev->cap_regs->hciversion)); + printk(KERN_DEBUG "hcsparams=0x%08x\n", + readl(&dev->cap_regs->hcsparams)); + printk(KERN_DEBUG "hccparams=0x%08x\n", + readl(&dev->cap_regs->hccparams)); + printk(KERN_DEBUG "dciversion=0x%04x\n", + readw(&dev->cap_regs->dciversion)); + printk(KERN_DEBUG "dccparams=0x%08x\n", + readl(&dev->cap_regs->dccparams)); + + /* Operational Registers */ + printk(KERN_DEBUG "Operational Registers (offset: " + "0x%04x, length: 0x%08x)\n", + OP_REG_OFFSET, + (u32)sizeof(struct langwell_op_regs)); + printk(KERN_DEBUG "extsts=0x%08x\n", + readl(&dev->op_regs->extsts)); + printk(KERN_DEBUG "extintr=0x%08x\n", + readl(&dev->op_regs->extintr)); + printk(KERN_DEBUG "usbcmd=0x%08x\n", + readl(&dev->op_regs->usbcmd)); + printk(KERN_DEBUG "usbsts=0x%08x\n", + readl(&dev->op_regs->usbsts)); + printk(KERN_DEBUG "usbintr=0x%08x\n", + readl(&dev->op_regs->usbintr)); + printk(KERN_DEBUG "frindex=0x%08x\n", + readl(&dev->op_regs->frindex)); + printk(KERN_DEBUG "ctrldssegment=0x%08x\n", + readl(&dev->op_regs->ctrldssegment)); + printk(KERN_DEBUG "deviceaddr=0x%08x\n", + readl(&dev->op_regs->deviceaddr)); + printk(KERN_DEBUG "endpointlistaddr=0x%08x\n", + readl(&dev->op_regs->endpointlistaddr)); + printk(KERN_DEBUG "ttctrl=0x%08x\n", + readl(&dev->op_regs->ttctrl)); + printk(KERN_DEBUG "burstsize=0x%08x\n", + readl(&dev->op_regs->burstsize)); + printk(KERN_DEBUG "txfilltuning=0x%08x\n", + readl(&dev->op_regs->txfilltuning)); + printk(KERN_DEBUG "txttfilltuning=0x%08x\n", + readl(&dev->op_regs->txttfilltuning)); + printk(KERN_DEBUG "ic_usb=0x%08x\n", + readl(&dev->op_regs->ic_usb)); + printk(KERN_DEBUG "ulpi_viewport=0x%08x\n", + readl(&dev->op_regs->ulpi_viewport)); + printk(KERN_DEBUG "configflag=0x%08x\n", + readl(&dev->op_regs->configflag)); + printk(KERN_DEBUG "portsc1=0x%08x\n", + readl(&dev->op_regs->portsc1)); + printk(KERN_DEBUG "devlc=0x%08x\n", + readl(&dev->op_regs->devlc)); + printk(KERN_DEBUG "otgsc=0x%08x\n", + readl(&dev->op_regs->otgsc)); + printk(KERN_DEBUG "usbmode=0x%08x\n", + readl(&dev->op_regs->usbmode)); + printk(KERN_DEBUG "endptnak=0x%08x\n", + readl(&dev->op_regs->endptnak)); + printk(KERN_DEBUG "endptnaken=0x%08x\n", + readl(&dev->op_regs->endptnaken)); + printk(KERN_DEBUG "endptsetupstat=0x%08x\n", + readl(&dev->op_regs->endptsetupstat)); + printk(KERN_DEBUG "endptprime=0x%08x\n", + readl(&dev->op_regs->endptprime)); + printk(KERN_DEBUG "endptflush=0x%08x\n", + readl(&dev->op_regs->endptflush)); + printk(KERN_DEBUG "endptstat=0x%08x\n", + readl(&dev->op_regs->endptstat)); + printk(KERN_DEBUG "endptcomplete=0x%08x\n", + readl(&dev->op_regs->endptcomplete)); + + for (i = 0; i < dev->ep_max / 2; i++) { + printk(KERN_DEBUG "endptctrl[%d]=0x%08x\n", + i, readl(&dev->op_regs->endptctrl[i])); + } +} +#endif /* VERBOSE */ + + +/*-------------------------------------------------------------------------*/ + +#define DIR_STRING(bAddress) (((bAddress) & USB_DIR_IN) ? "in" : "out") + +#define is_in(ep) (((ep)->ep_num == 0) ? ((ep)->dev->ep0_dir == \ + USB_DIR_IN) : ((ep)->desc->bEndpointAddress \ + & USB_DIR_IN) == USB_DIR_IN) + + +#ifdef DEBUG +static char *type_string(u8 bmAttributes) +{ + switch ((bmAttributes) & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_BULK: + return "bulk"; + case USB_ENDPOINT_XFER_ISOC: + return "iso"; + case USB_ENDPOINT_XFER_INT: + return "int"; + }; + + return "control"; +} +#endif + + +/* configure endpoint control registers */ +static void ep_reset(struct langwell_ep *ep, unsigned char ep_num, + unsigned char is_in, unsigned char ep_type) +{ + struct langwell_udc *dev; + u32 endptctrl; + + dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); + if (is_in) { /* TX */ + if (ep_num) + endptctrl |= EPCTRL_TXR; + endptctrl |= EPCTRL_TXE; + endptctrl |= ep_type << EPCTRL_TXT_SHIFT; + } else { /* RX */ + if (ep_num) + endptctrl |= EPCTRL_RXR; + endptctrl |= EPCTRL_RXE; + endptctrl |= ep_type << EPCTRL_RXT_SHIFT; + } + + writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* reset ep0 dQH and endptctrl */ +static void ep0_reset(struct langwell_udc *dev) +{ + struct langwell_ep *ep; + int i; + + VDBG(dev, "---> %s()\n", __func__); + + /* ep0 in and out */ + for (i = 0; i < 2; i++) { + ep = &dev->ep[i]; + ep->dev = dev; + + /* ep0 dQH */ + ep->dqh = &dev->ep_dqh[i]; + + /* configure ep0 endpoint capabilities in dQH */ + ep->dqh->dqh_ios = 1; + ep->dqh->dqh_mpl = EP0_MAX_PKT_SIZE; + + /* FIXME: enable ep0-in HW zero length termination select */ + if (is_in(ep)) + ep->dqh->dqh_zlt = 0; + ep->dqh->dqh_mult = 0; + + /* configure ep0 control registers */ + ep_reset(&dev->ep[0], 0, i, USB_ENDPOINT_XFER_CONTROL); + } + + VDBG(dev, "<--- %s()\n", __func__); + return; +} + + +/*-------------------------------------------------------------------------*/ + +/* endpoints operations */ + +/* configure endpoint, making it usable */ +static int langwell_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct langwell_udc *dev; + struct langwell_ep *ep; + u16 max = 0; + unsigned long flags; + int retval = 0; + unsigned char zlt, ios = 0, mult = 0; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + if (!_ep || !desc || ep->desc + || desc->bDescriptorType != USB_DT_ENDPOINT) + return -EINVAL; + + if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + max = le16_to_cpu(desc->wMaxPacketSize); + + /* + * disable HW zero length termination select + * driver handles zero length packet through req->req.zero + */ + zlt = 1; + + /* + * sanity check type, direction, address, and then + * initialize the endpoint capabilities fields in dQH + */ + switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_CONTROL: + ios = 1; + break; + case USB_ENDPOINT_XFER_BULK: + if ((dev->gadget.speed == USB_SPEED_HIGH + && max != 512) + || (dev->gadget.speed == USB_SPEED_FULL + && max > 64)) { + goto done; + } + break; + case USB_ENDPOINT_XFER_INT: + if (strstr(ep->ep.name, "-iso")) /* bulk is ok */ + goto done; + + switch (dev->gadget.speed) { + case USB_SPEED_HIGH: + if (max <= 1024) + break; + case USB_SPEED_FULL: + if (max <= 64) + break; + default: + if (max <= 8) + break; + goto done; + } + break; + case USB_ENDPOINT_XFER_ISOC: + if (strstr(ep->ep.name, "-bulk") + || strstr(ep->ep.name, "-int")) + goto done; + + switch (dev->gadget.speed) { + case USB_SPEED_HIGH: + if (max <= 1024) + break; + case USB_SPEED_FULL: + if (max <= 1023) + break; + default: + goto done; + } + /* + * FIXME: + * calculate transactions needed for high bandwidth iso + */ + mult = (unsigned char)(1 + ((max >> 11) & 0x03)); + max = max & 0x8ff; /* bit 0~10 */ + /* 3 transactions at most */ + if (mult > 3) + goto done; + break; + default: + goto done; + } + + spin_lock_irqsave(&dev->lock, flags); + + /* configure endpoint capabilities in dQH */ + ep->dqh->dqh_ios = ios; + ep->dqh->dqh_mpl = cpu_to_le16(max); + ep->dqh->dqh_zlt = zlt; + ep->dqh->dqh_mult = mult; + + ep->ep.maxpacket = max; + ep->desc = desc; + ep->stopped = 0; + ep->ep_num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; + + /* ep_type */ + ep->ep_type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + + /* configure endpoint control registers */ + ep_reset(ep, ep->ep_num, is_in(ep), ep->ep_type); + + DBG(dev, "enabled %s (ep%d%s-%s), max %04x\n", + _ep->name, + ep->ep_num, + DIR_STRING(desc->bEndpointAddress), + type_string(desc->bmAttributes), + max); + + spin_unlock_irqrestore(&dev->lock, flags); +done: + VDBG(dev, "<--- %s()\n", __func__); + return retval; +} + + +/*-------------------------------------------------------------------------*/ + +/* retire a request */ +static void done(struct langwell_ep *ep, struct langwell_request *req, + int status) +{ + struct langwell_udc *dev = ep->dev; + unsigned stopped = ep->stopped; + struct langwell_dtd *curr_dtd, *next_dtd; + int i; + + VDBG(dev, "---> %s()\n", __func__); + + /* remove the req from ep->queue */ + list_del_init(&req->queue); + + if (req->req.status == -EINPROGRESS) + req->req.status = status; + else + status = req->req.status; + + /* free dTD for the request */ + next_dtd = req->head; + for (i = 0; i < req->dtd_count; i++) { + curr_dtd = next_dtd; + if (i != req->dtd_count - 1) + next_dtd = curr_dtd->next_dtd_virt; + dma_pool_free(dev->dtd_pool, curr_dtd, curr_dtd->dtd_dma); + } + + if (req->mapped) { + dma_unmap_single(&dev->pdev->dev, req->req.dma, req->req.length, + is_in(ep) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); + req->req.dma = DMA_ADDR_INVALID; + req->mapped = 0; + } else + dma_sync_single_for_cpu(&dev->pdev->dev, req->req.dma, + req->req.length, + is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + + if (status != -ESHUTDOWN) + DBG(dev, "complete %s, req %p, stat %d, len %u/%u\n", + ep->ep.name, &req->req, status, + req->req.actual, req->req.length); + + /* don't modify queue heads during completion callback */ + ep->stopped = 1; + + spin_unlock(&dev->lock); + /* complete routine from gadget driver */ + if (req->req.complete) + req->req.complete(&ep->ep, &req->req); + + spin_lock(&dev->lock); + ep->stopped = stopped; + + VDBG(dev, "<--- %s()\n", __func__); +} + + +static void langwell_ep_fifo_flush(struct usb_ep *_ep); + +/* delete all endpoint requests, called with spinlock held */ +static void nuke(struct langwell_ep *ep, int status) +{ + /* called with spinlock held */ + ep->stopped = 1; + + /* endpoint fifo flush */ + if (&ep->ep && ep->desc) + langwell_ep_fifo_flush(&ep->ep); + + while (!list_empty(&ep->queue)) { + struct langwell_request *req = NULL; + req = list_entry(ep->queue.next, struct langwell_request, + queue); + done(ep, req, status); + } +} + + +/*-------------------------------------------------------------------------*/ + +/* endpoint is no longer usable */ +static int langwell_ep_disable(struct usb_ep *_ep) +{ + struct langwell_ep *ep; + unsigned long flags; + struct langwell_udc *dev; + int ep_num; + u32 endptctrl; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + if (!_ep || !ep->desc) + return -EINVAL; + + spin_lock_irqsave(&dev->lock, flags); + + /* disable endpoint control register */ + ep_num = ep->ep_num; + endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); + if (is_in(ep)) + endptctrl &= ~EPCTRL_TXE; + else + endptctrl &= ~EPCTRL_RXE; + writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); + + /* nuke all pending requests (does flush) */ + nuke(ep, -ESHUTDOWN); + + ep->desc = NULL; + ep->stopped = 1; + + spin_unlock_irqrestore(&dev->lock, flags); + + DBG(dev, "disabled %s\n", _ep->name); + VDBG(dev, "<--- %s()\n", __func__); + + return 0; +} + + +/* allocate a request object to use with this endpoint */ +static struct usb_request *langwell_alloc_request(struct usb_ep *_ep, + gfp_t gfp_flags) +{ + struct langwell_ep *ep; + struct langwell_udc *dev; + struct langwell_request *req = NULL; + + if (!_ep) + return NULL; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + req = kzalloc(sizeof(*req), gfp_flags); + if (!req) + return NULL; + + req->req.dma = DMA_ADDR_INVALID; + INIT_LIST_HEAD(&req->queue); + + VDBG(dev, "alloc request for %s\n", _ep->name); + VDBG(dev, "<--- %s()\n", __func__); + return &req->req; +} + + +/* free a request object */ +static void langwell_free_request(struct usb_ep *_ep, + struct usb_request *_req) +{ + struct langwell_ep *ep; + struct langwell_udc *dev; + struct langwell_request *req = NULL; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + if (!_ep || !_req) + return; + + req = container_of(_req, struct langwell_request, req); + WARN_ON(!list_empty(&req->queue)); + + if (_req) + kfree(req); + + VDBG(dev, "free request for %s\n", _ep->name); + VDBG(dev, "<--- %s()\n", __func__); +} + + +/*-------------------------------------------------------------------------*/ + +/* queue dTD and PRIME endpoint */ +static int queue_dtd(struct langwell_ep *ep, struct langwell_request *req) +{ + u32 bit_mask, usbcmd, endptstat, dtd_dma; + u8 dtd_status; + int i; + struct langwell_dqh *dqh; + struct langwell_udc *dev; + + dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + i = ep->ep_num * 2 + is_in(ep); + dqh = &dev->ep_dqh[i]; + + if (ep->ep_num) + VDBG(dev, "%s\n", ep->name); + else + /* ep0 */ + VDBG(dev, "%s-%s\n", ep->name, is_in(ep) ? "in" : "out"); + + VDBG(dev, "ep_dqh[%d] addr: 0x%08x\n", i, (u32)&(dev->ep_dqh[i])); + + bit_mask = is_in(ep) ? + (1 << (ep->ep_num + 16)) : (1 << (ep->ep_num)); + + VDBG(dev, "bit_mask = 0x%08x\n", bit_mask); + + /* check if the pipe is empty */ + if (!(list_empty(&ep->queue))) { + /* add dTD to the end of linked list */ + struct langwell_request *lastreq; + lastreq = list_entry(ep->queue.prev, + struct langwell_request, queue); + + lastreq->tail->dtd_next = + cpu_to_le32(req->head->dtd_dma & DTD_NEXT_MASK); + + /* read prime bit, if 1 goto out */ + if (readl(&dev->op_regs->endptprime) & bit_mask) + goto out; + + do { + /* set ATDTW bit in USBCMD */ + usbcmd = readl(&dev->op_regs->usbcmd); + writel(usbcmd | CMD_ATDTW, &dev->op_regs->usbcmd); + + /* read correct status bit */ + endptstat = readl(&dev->op_regs->endptstat) & bit_mask; + + } while (!(readl(&dev->op_regs->usbcmd) & CMD_ATDTW)); + + /* write ATDTW bit to 0 */ + usbcmd = readl(&dev->op_regs->usbcmd); + writel(usbcmd & ~CMD_ATDTW, &dev->op_regs->usbcmd); + + if (endptstat) + goto out; + } + + /* write dQH next pointer and terminate bit to 0 */ + dtd_dma = req->head->dtd_dma & DTD_NEXT_MASK; + dqh->dtd_next = cpu_to_le32(dtd_dma); + + /* clear active and halt bit */ + dtd_status = (u8) ~(DTD_STS_ACTIVE | DTD_STS_HALTED); + dqh->dtd_status &= dtd_status; + VDBG(dev, "dqh->dtd_status = 0x%x\n", dqh->dtd_status); + + /* write 1 to endptprime register to PRIME endpoint */ + bit_mask = is_in(ep) ? (1 << (ep->ep_num + 16)) : (1 << ep->ep_num); + VDBG(dev, "endprime bit_mask = 0x%08x\n", bit_mask); + writel(bit_mask, &dev->op_regs->endptprime); +out: + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* fill in the dTD structure to build a transfer descriptor */ +static struct langwell_dtd *build_dtd(struct langwell_request *req, + unsigned *length, dma_addr_t *dma, int *is_last) +{ + u32 buf_ptr; + struct langwell_dtd *dtd; + struct langwell_udc *dev; + int i; + + dev = req->ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + /* the maximum transfer length, up to 16k bytes */ + *length = min(req->req.length - req->req.actual, + (unsigned)DTD_MAX_TRANSFER_LENGTH); + + /* create dTD dma_pool resource */ + dtd = dma_pool_alloc(dev->dtd_pool, GFP_KERNEL, dma); + if (dtd == NULL) + return dtd; + dtd->dtd_dma = *dma; + + /* initialize buffer page pointers */ + buf_ptr = (u32)(req->req.dma + req->req.actual); + for (i = 0; i < 5; i++) + dtd->dtd_buf[i] = cpu_to_le32(buf_ptr + i * PAGE_SIZE); + + req->req.actual += *length; + + /* fill in total bytes with transfer size */ + dtd->dtd_total = cpu_to_le16(*length); + VDBG(dev, "dtd->dtd_total = %d\n", dtd->dtd_total); + + /* set is_last flag if req->req.zero is set or not */ + if (req->req.zero) { + if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0) + *is_last = 1; + else + *is_last = 0; + } else if (req->req.length == req->req.actual) { + *is_last = 1; + } else + *is_last = 0; + + if (*is_last == 0) + VDBG(dev, "multi-dtd request!\n"); + + /* set interrupt on complete bit for the last dTD */ + if (*is_last && !req->req.no_interrupt) + dtd->dtd_ioc = 1; + + /* set multiplier override 0 for non-ISO and non-TX endpoint */ + dtd->dtd_multo = 0; + + /* set the active bit of status field to 1 */ + dtd->dtd_status = DTD_STS_ACTIVE; + VDBG(dev, "dtd->dtd_status = 0x%02x\n", dtd->dtd_status); + + VDBG(dev, "length = %d, dma addr= 0x%08x\n", *length, (int)*dma); + VDBG(dev, "<--- %s()\n", __func__); + return dtd; +} + + +/* generate dTD linked list for a request */ +static int req_to_dtd(struct langwell_request *req) +{ + unsigned count; + int is_last, is_first = 1; + struct langwell_dtd *dtd, *last_dtd = NULL; + struct langwell_udc *dev; + dma_addr_t dma; + + dev = req->ep->dev; + VDBG(dev, "---> %s()\n", __func__); + do { + dtd = build_dtd(req, &count, &dma, &is_last); + if (dtd == NULL) + return -ENOMEM; + + if (is_first) { + is_first = 0; + req->head = dtd; + } else { + last_dtd->dtd_next = cpu_to_le32(dma); + last_dtd->next_dtd_virt = dtd; + } + last_dtd = dtd; + req->dtd_count++; + } while (!is_last); + + /* set terminate bit to 1 for the last dTD */ + dtd->dtd_next = DTD_TERM; + + req->tail = dtd; + + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + +/*-------------------------------------------------------------------------*/ + +/* queue (submits) an I/O requests to an endpoint */ +static int langwell_ep_queue(struct usb_ep *_ep, struct usb_request *_req, + gfp_t gfp_flags) +{ + struct langwell_request *req; + struct langwell_ep *ep; + struct langwell_udc *dev; + unsigned long flags; + int is_iso = 0, zlflag = 0; + + /* always require a cpu-view buffer */ + req = container_of(_req, struct langwell_request, req); + ep = container_of(_ep, struct langwell_ep, ep); + + if (!_req || !_req->complete || !_req->buf + || !list_empty(&req->queue)) { + return -EINVAL; + } + + if (unlikely(!_ep || !ep->desc)) + return -EINVAL; + + dev = ep->dev; + req->ep = ep; + VDBG(dev, "---> %s()\n", __func__); + + if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + if (req->req.length > ep->ep.maxpacket) + return -EMSGSIZE; + is_iso = 1; + } + + if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) + return -ESHUTDOWN; + + /* set up dma mapping in case the caller didn't */ + if (_req->dma == DMA_ADDR_INVALID) { + /* WORKAROUND: WARN_ON(size == 0) */ + if (_req->length == 0) { + VDBG(dev, "req->length: 0->1\n"); + zlflag = 1; + _req->length++; + } + + _req->dma = dma_map_single(&dev->pdev->dev, + _req->buf, _req->length, + is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + if (zlflag && (_req->length == 1)) { + VDBG(dev, "req->length: 1->0\n"); + zlflag = 0; + _req->length = 0; + } + + req->mapped = 1; + VDBG(dev, "req->mapped = 1\n"); + } else { + dma_sync_single_for_device(&dev->pdev->dev, + _req->dma, _req->length, + is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + req->mapped = 0; + VDBG(dev, "req->mapped = 0\n"); + } + + DBG(dev, "%s queue req %p, len %u, buf %p, dma 0x%08x\n", + _ep->name, + _req, _req->length, _req->buf, _req->dma); + + _req->status = -EINPROGRESS; + _req->actual = 0; + req->dtd_count = 0; + + spin_lock_irqsave(&dev->lock, flags); + + /* build and put dTDs to endpoint queue */ + if (!req_to_dtd(req)) { + queue_dtd(ep, req); + } else { + spin_unlock_irqrestore(&dev->lock, flags); + return -ENOMEM; + } + + /* update ep0 state */ + if (ep->ep_num == 0) + dev->ep0_state = DATA_STATE_XMIT; + + if (likely(req != NULL)) { + list_add_tail(&req->queue, &ep->queue); + VDBG(dev, "list_add_tail() \n"); + } + + spin_unlock_irqrestore(&dev->lock, flags); + + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* dequeue (cancels, unlinks) an I/O request from an endpoint */ +static int langwell_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct langwell_ep *ep; + struct langwell_udc *dev; + struct langwell_request *req; + unsigned long flags; + int stopped, ep_num, retval = 0; + u32 endptctrl; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + if (!_ep || !ep->desc || !_req) + return -EINVAL; + + if (!dev->driver) + return -ESHUTDOWN; + + spin_lock_irqsave(&dev->lock, flags); + stopped = ep->stopped; + + /* quiesce dma while we patch the queue */ + ep->stopped = 1; + ep_num = ep->ep_num; + + /* disable endpoint control register */ + endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); + if (is_in(ep)) + endptctrl &= ~EPCTRL_TXE; + else + endptctrl &= ~EPCTRL_RXE; + writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); + + /* make sure it's still queued on this endpoint */ + list_for_each_entry(req, &ep->queue, queue) { + if (&req->req == _req) + break; + } + + if (&req->req != _req) { + retval = -EINVAL; + goto done; + } + + /* queue head may be partially complete. */ + if (ep->queue.next == &req->queue) { + DBG(dev, "unlink (%s) dma\n", _ep->name); + _req->status = -ECONNRESET; + langwell_ep_fifo_flush(&ep->ep); + + /* not the last request in endpoint queue */ + if (likely(ep->queue.next == &req->queue)) { + struct langwell_dqh *dqh; + struct langwell_request *next_req; + + dqh = ep->dqh; + next_req = list_entry(req->queue.next, + struct langwell_request, queue); + + /* point the dQH to the first dTD of next request */ + writel((u32) next_req->head, &dqh->dqh_current); + } + } else { + struct langwell_request *prev_req; + + prev_req = list_entry(req->queue.prev, + struct langwell_request, queue); + writel(readl(&req->tail->dtd_next), + &prev_req->tail->dtd_next); + } + + done(ep, req, -ECONNRESET); + +done: + /* enable endpoint again */ + endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); + if (is_in(ep)) + endptctrl |= EPCTRL_TXE; + else + endptctrl |= EPCTRL_RXE; + writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); + + ep->stopped = stopped; + spin_unlock_irqrestore(&dev->lock, flags); + + VDBG(dev, "<--- %s()\n", __func__); + return retval; +} + + +/*-------------------------------------------------------------------------*/ + +/* endpoint set/clear halt */ +static void ep_set_halt(struct langwell_ep *ep, int value) +{ + u32 endptctrl = 0; + int ep_num; + struct langwell_udc *dev = ep->dev; + VDBG(dev, "---> %s()\n", __func__); + + ep_num = ep->ep_num; + endptctrl = readl(&dev->op_regs->endptctrl[ep_num]); + + /* value: 1 - set halt, 0 - clear halt */ + if (value) { + /* set the stall bit */ + if (is_in(ep)) + endptctrl |= EPCTRL_TXS; + else + endptctrl |= EPCTRL_RXS; + } else { + /* clear the stall bit and reset data toggle */ + if (is_in(ep)) { + endptctrl &= ~EPCTRL_TXS; + endptctrl |= EPCTRL_TXR; + } else { + endptctrl &= ~EPCTRL_RXS; + endptctrl |= EPCTRL_RXR; + } + } + + writel(endptctrl, &dev->op_regs->endptctrl[ep_num]); + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* set the endpoint halt feature */ +static int langwell_ep_set_halt(struct usb_ep *_ep, int value) +{ + struct langwell_ep *ep; + struct langwell_udc *dev; + unsigned long flags; + int retval = 0; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + + VDBG(dev, "---> %s()\n", __func__); + + if (!_ep || !ep->desc) + return -EINVAL; + + if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + if (ep->desc && (ep->desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + == USB_ENDPOINT_XFER_ISOC) + return -EOPNOTSUPP; + + spin_lock_irqsave(&dev->lock, flags); + + /* + * attempt to halt IN ep will fail if any transfer requests + * are still queue + */ + if (!list_empty(&ep->queue) && is_in(ep) && value) { + /* IN endpoint FIFO holds bytes */ + DBG(dev, "%s FIFO holds bytes\n", _ep->name); + retval = -EAGAIN; + goto done; + } + + /* endpoint set/clear halt */ + if (ep->ep_num) { + ep_set_halt(ep, value); + } else { /* endpoint 0 */ + dev->ep0_state = WAIT_FOR_SETUP; + dev->ep0_dir = USB_DIR_OUT; + } +done: + spin_unlock_irqrestore(&dev->lock, flags); + DBG(dev, "%s %s halt\n", _ep->name, value ? "set" : "clear"); + VDBG(dev, "<--- %s()\n", __func__); + return retval; +} + + +/* set the halt feature and ignores clear requests */ +static int langwell_ep_set_wedge(struct usb_ep *_ep) +{ + struct langwell_ep *ep; + struct langwell_udc *dev; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + + VDBG(dev, "---> %s()\n", __func__); + + if (!_ep || !ep->desc) + return -EINVAL; + + VDBG(dev, "<--- %s()\n", __func__); + return usb_ep_set_halt(_ep); +} + + +/* flush contents of a fifo */ +static void langwell_ep_fifo_flush(struct usb_ep *_ep) +{ + struct langwell_ep *ep; + struct langwell_udc *dev; + u32 flush_bit; + unsigned long timeout; + + ep = container_of(_ep, struct langwell_ep, ep); + dev = ep->dev; + + VDBG(dev, "---> %s()\n", __func__); + + if (!_ep || !ep->desc) { + VDBG(dev, "ep or ep->desc is NULL\n"); + VDBG(dev, "<--- %s()\n", __func__); + return; + } + + VDBG(dev, "%s-%s fifo flush\n", _ep->name, is_in(ep) ? "in" : "out"); + + /* flush endpoint buffer */ + if (ep->ep_num == 0) + flush_bit = (1 << 16) | 1; + else if (is_in(ep)) + flush_bit = 1 << (ep->ep_num + 16); /* TX */ + else + flush_bit = 1 << ep->ep_num; /* RX */ + + /* wait until flush complete */ + timeout = jiffies + FLUSH_TIMEOUT; + do { + writel(flush_bit, &dev->op_regs->endptflush); + while (readl(&dev->op_regs->endptflush)) { + if (time_after(jiffies, timeout)) { + ERROR(dev, "ep flush timeout\n"); + goto done; + } + cpu_relax(); + } + } while (readl(&dev->op_regs->endptstat) & flush_bit); +done: + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* endpoints operations structure */ +static const struct usb_ep_ops langwell_ep_ops = { + + /* configure endpoint, making it usable */ + .enable = langwell_ep_enable, + + /* endpoint is no longer usable */ + .disable = langwell_ep_disable, + + /* allocate a request object to use with this endpoint */ + .alloc_request = langwell_alloc_request, + + /* free a request object */ + .free_request = langwell_free_request, + + /* queue (submits) an I/O requests to an endpoint */ + .queue = langwell_ep_queue, + + /* dequeue (cancels, unlinks) an I/O request from an endpoint */ + .dequeue = langwell_ep_dequeue, + + /* set the endpoint halt feature */ + .set_halt = langwell_ep_set_halt, + + /* set the halt feature and ignores clear requests */ + .set_wedge = langwell_ep_set_wedge, + + /* flush contents of a fifo */ + .fifo_flush = langwell_ep_fifo_flush, +}; + + +/*-------------------------------------------------------------------------*/ + +/* device controller usb_gadget_ops structure */ + +/* returns the current frame number */ +static int langwell_get_frame(struct usb_gadget *_gadget) +{ + struct langwell_udc *dev; + u16 retval; + + if (!_gadget) + return -ENODEV; + + dev = container_of(_gadget, struct langwell_udc, gadget); + VDBG(dev, "---> %s()\n", __func__); + + retval = readl(&dev->op_regs->frindex) & FRINDEX_MASK; + + VDBG(dev, "<--- %s()\n", __func__); + return retval; +} + + +/* tries to wake up the host connected to this gadget */ +static int langwell_wakeup(struct usb_gadget *_gadget) +{ + struct langwell_udc *dev; + u32 portsc1, devlc; + unsigned long flags; + + if (!_gadget) + return 0; + + dev = container_of(_gadget, struct langwell_udc, gadget); + VDBG(dev, "---> %s()\n", __func__); + + /* Remote Wakeup feature not enabled by host */ + if (!dev->remote_wakeup) + return -ENOTSUPP; + + spin_lock_irqsave(&dev->lock, flags); + + portsc1 = readl(&dev->op_regs->portsc1); + if (!(portsc1 & PORTS_SUSP)) { + spin_unlock_irqrestore(&dev->lock, flags); + return 0; + } + + /* LPM L1 to L0, remote wakeup */ + if (dev->lpm && dev->lpm_state == LPM_L1) { + portsc1 |= PORTS_SLP; + writel(portsc1, &dev->op_regs->portsc1); + } + + /* force port resume */ + if (dev->usb_state == USB_STATE_SUSPENDED) { + portsc1 |= PORTS_FPR; + writel(portsc1, &dev->op_regs->portsc1); + } + + /* exit PHY low power suspend */ + devlc = readl(&dev->op_regs->devlc); + VDBG(dev, "devlc = 0x%08x\n", devlc); + devlc &= ~LPM_PHCD; + writel(devlc, &dev->op_regs->devlc); + + spin_unlock_irqrestore(&dev->lock, flags); + + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* notify controller that VBUS is powered or not */ +static int langwell_vbus_session(struct usb_gadget *_gadget, int is_active) +{ + struct langwell_udc *dev; + unsigned long flags; + u32 usbcmd; + + if (!_gadget) + return -ENODEV; + + dev = container_of(_gadget, struct langwell_udc, gadget); + VDBG(dev, "---> %s()\n", __func__); + + spin_lock_irqsave(&dev->lock, flags); + VDBG(dev, "VBUS status: %s\n", is_active ? "on" : "off"); + + dev->vbus_active = (is_active != 0); + if (dev->driver && dev->softconnected && dev->vbus_active) { + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd |= CMD_RUNSTOP; + writel(usbcmd, &dev->op_regs->usbcmd); + } else { + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd &= ~CMD_RUNSTOP; + writel(usbcmd, &dev->op_regs->usbcmd); + } + + spin_unlock_irqrestore(&dev->lock, flags); + + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* constrain controller's VBUS power usage */ +static int langwell_vbus_draw(struct usb_gadget *_gadget, unsigned mA) +{ + struct langwell_udc *dev; + + if (!_gadget) + return -ENODEV; + + dev = container_of(_gadget, struct langwell_udc, gadget); + VDBG(dev, "---> %s()\n", __func__); + + if (dev->transceiver) { + VDBG(dev, "otg_set_power\n"); + VDBG(dev, "<--- %s()\n", __func__); + return otg_set_power(dev->transceiver, mA); + } + + VDBG(dev, "<--- %s()\n", __func__); + return -ENOTSUPP; +} + + +/* D+ pullup, software-controlled connect/disconnect to USB host */ +static int langwell_pullup(struct usb_gadget *_gadget, int is_on) +{ + struct langwell_udc *dev; + u32 usbcmd; + unsigned long flags; + + if (!_gadget) + return -ENODEV; + + dev = container_of(_gadget, struct langwell_udc, gadget); + + VDBG(dev, "---> %s()\n", __func__); + + spin_lock_irqsave(&dev->lock, flags); + dev->softconnected = (is_on != 0); + + if (dev->driver && dev->softconnected && dev->vbus_active) { + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd |= CMD_RUNSTOP; + writel(usbcmd, &dev->op_regs->usbcmd); + } else { + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd &= ~CMD_RUNSTOP; + writel(usbcmd, &dev->op_regs->usbcmd); + } + spin_unlock_irqrestore(&dev->lock, flags); + + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* device controller usb_gadget_ops structure */ +static const struct usb_gadget_ops langwell_ops = { + + /* returns the current frame number */ + .get_frame = langwell_get_frame, + + /* tries to wake up the host connected to this gadget */ + .wakeup = langwell_wakeup, + + /* set the device selfpowered feature, always selfpowered */ + /* .set_selfpowered = langwell_set_selfpowered, */ + + /* notify controller that VBUS is powered or not */ + .vbus_session = langwell_vbus_session, + + /* constrain controller's VBUS power usage */ + .vbus_draw = langwell_vbus_draw, + + /* D+ pullup, software-controlled connect/disconnect to USB host */ + .pullup = langwell_pullup, +}; + + +/*-------------------------------------------------------------------------*/ + +/* device controller operations */ + +/* reset device controller */ +static int langwell_udc_reset(struct langwell_udc *dev) +{ + u32 usbcmd, usbmode, devlc, endpointlistaddr; + unsigned long timeout; + + if (!dev) + return -EINVAL; + + DBG(dev, "---> %s()\n", __func__); + + /* set controller to stop state */ + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd &= ~CMD_RUNSTOP; + writel(usbcmd, &dev->op_regs->usbcmd); + + /* reset device controller */ + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd |= CMD_RST; + writel(usbcmd, &dev->op_regs->usbcmd); + + /* wait for reset to complete */ + timeout = jiffies + RESET_TIMEOUT; + while (readl(&dev->op_regs->usbcmd) & CMD_RST) { + if (time_after(jiffies, timeout)) { + ERROR(dev, "device reset timeout\n"); + return -ETIMEDOUT; + } + cpu_relax(); + } + + /* set controller to device mode */ + usbmode = readl(&dev->op_regs->usbmode); + usbmode |= MODE_DEVICE; + + /* turn setup lockout off, require setup tripwire in usbcmd */ + usbmode |= MODE_SLOM; + + writel(usbmode, &dev->op_regs->usbmode); + usbmode = readl(&dev->op_regs->usbmode); + VDBG(dev, "usbmode=0x%08x\n", usbmode); + + /* Write-Clear setup status */ + writel(0, &dev->op_regs->usbsts); + + /* if support USB LPM, ACK all LPM token */ + if (dev->lpm) { + devlc = readl(&dev->op_regs->devlc); + devlc &= ~LPM_STL; /* don't STALL LPM token */ + devlc &= ~LPM_NYT_ACK; /* ACK LPM token */ + writel(devlc, &dev->op_regs->devlc); + } + + /* fill endpointlistaddr register */ + endpointlistaddr = dev->ep_dqh_dma; + endpointlistaddr &= ENDPOINTLISTADDR_MASK; + writel(endpointlistaddr, &dev->op_regs->endpointlistaddr); + + VDBG(dev, "dQH base (vir: %p, phy: 0x%08x), endpointlistaddr=0x%08x\n", + dev->ep_dqh, endpointlistaddr, + readl(&dev->op_regs->endpointlistaddr)); + DBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* reinitialize device controller endpoints */ +static int eps_reinit(struct langwell_udc *dev) +{ + struct langwell_ep *ep; + char name[14]; + int i; + + VDBG(dev, "---> %s()\n", __func__); + + /* initialize ep0 */ + ep = &dev->ep[0]; + ep->dev = dev; + strncpy(ep->name, "ep0", sizeof(ep->name)); + ep->ep.name = ep->name; + ep->ep.ops = &langwell_ep_ops; + ep->stopped = 0; + ep->ep.maxpacket = EP0_MAX_PKT_SIZE; + ep->ep_num = 0; + ep->desc = &langwell_ep0_desc; + INIT_LIST_HEAD(&ep->queue); + + ep->ep_type = USB_ENDPOINT_XFER_CONTROL; + + /* initialize other endpoints */ + for (i = 2; i < dev->ep_max; i++) { + ep = &dev->ep[i]; + if (i % 2) + snprintf(name, sizeof(name), "ep%din", i / 2); + else + snprintf(name, sizeof(name), "ep%dout", i / 2); + ep->dev = dev; + strncpy(ep->name, name, sizeof(ep->name)); + ep->ep.name = ep->name; + + ep->ep.ops = &langwell_ep_ops; + ep->stopped = 0; + ep->ep.maxpacket = (unsigned short) ~0; + ep->ep_num = i / 2; + + INIT_LIST_HEAD(&ep->queue); + list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); + + ep->dqh = &dev->ep_dqh[i]; + } + + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* enable interrupt and set controller to run state */ +static void langwell_udc_start(struct langwell_udc *dev) +{ + u32 usbintr, usbcmd; + DBG(dev, "---> %s()\n", __func__); + + /* enable interrupts */ + usbintr = INTR_ULPIE /* ULPI */ + | INTR_SLE /* suspend */ + /* | INTR_SRE SOF received */ + | INTR_URE /* USB reset */ + | INTR_AAE /* async advance */ + | INTR_SEE /* system error */ + | INTR_FRE /* frame list rollover */ + | INTR_PCE /* port change detect */ + | INTR_UEE /* USB error interrupt */ + | INTR_UE; /* USB interrupt */ + writel(usbintr, &dev->op_regs->usbintr); + + /* clear stopped bit */ + dev->stopped = 0; + + /* set controller to run */ + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd |= CMD_RUNSTOP; + writel(usbcmd, &dev->op_regs->usbcmd); + + DBG(dev, "<--- %s()\n", __func__); + return; +} + + +/* disable interrupt and set controller to stop state */ +static void langwell_udc_stop(struct langwell_udc *dev) +{ + u32 usbcmd; + + DBG(dev, "---> %s()\n", __func__); + + /* disable all interrupts */ + writel(0, &dev->op_regs->usbintr); + + /* set stopped bit */ + dev->stopped = 1; + + /* set controller to stop state */ + usbcmd = readl(&dev->op_regs->usbcmd); + usbcmd &= ~CMD_RUNSTOP; + writel(usbcmd, &dev->op_regs->usbcmd); + + DBG(dev, "<--- %s()\n", __func__); + return; +} + + +/* stop all USB activities */ +static void stop_activity(struct langwell_udc *dev, + struct usb_gadget_driver *driver) +{ + struct langwell_ep *ep; + DBG(dev, "---> %s()\n", __func__); + + nuke(&dev->ep[0], -ESHUTDOWN); + + list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) { + nuke(ep, -ESHUTDOWN); + } + + /* report disconnect; the driver is already quiesced */ + if (driver) { + spin_unlock(&dev->lock); + driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } + + DBG(dev, "<--- %s()\n", __func__); +} + + +/*-------------------------------------------------------------------------*/ + +/* device "function" sysfs attribute file */ +static ssize_t show_function(struct device *_dev, + struct device_attribute *attr, char *buf) +{ + struct langwell_udc *dev = the_controller; + + if (!dev->driver || !dev->driver->function + || strlen(dev->driver->function) > PAGE_SIZE) + return 0; + + return scnprintf(buf, PAGE_SIZE, "%s\n", dev->driver->function); +} +static DEVICE_ATTR(function, S_IRUGO, show_function, NULL); + + +/* device "langwell_udc" sysfs attribute file */ +static ssize_t show_langwell_udc(struct device *_dev, + struct device_attribute *attr, char *buf) +{ + struct langwell_udc *dev = the_controller; + struct langwell_request *req; + struct langwell_ep *ep = NULL; + char *next; + unsigned size; + unsigned t; + unsigned i; + unsigned long flags; + u32 tmp_reg; + + next = buf; + size = PAGE_SIZE; + spin_lock_irqsave(&dev->lock, flags); + + /* driver basic information */ + t = scnprintf(next, size, + DRIVER_DESC "\n" + "%s version: %s\n" + "Gadget driver: %s\n\n", + driver_name, DRIVER_VERSION, + dev->driver ? dev->driver->driver.name : "(none)"); + size -= t; + next += t; + + /* device registers */ + tmp_reg = readl(&dev->op_regs->usbcmd); + t = scnprintf(next, size, + "USBCMD reg:\n" + "SetupTW: %d\n" + "Run/Stop: %s\n\n", + (tmp_reg & CMD_SUTW) ? 1 : 0, + (tmp_reg & CMD_RUNSTOP) ? "Run" : "Stop"); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->usbsts); + t = scnprintf(next, size, + "USB Status Reg:\n" + "Device Suspend: %d\n" + "Reset Received: %d\n" + "System Error: %s\n" + "USB Error Interrupt: %s\n\n", + (tmp_reg & STS_SLI) ? 1 : 0, + (tmp_reg & STS_URI) ? 1 : 0, + (tmp_reg & STS_SEI) ? "Error" : "No error", + (tmp_reg & STS_UEI) ? "Error detected" : "No error"); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->usbintr); + t = scnprintf(next, size, + "USB Intrrupt Enable Reg:\n" + "Sleep Enable: %d\n" + "SOF Received Enable: %d\n" + "Reset Enable: %d\n" + "System Error Enable: %d\n" + "Port Change Dectected Enable: %d\n" + "USB Error Intr Enable: %d\n" + "USB Intr Enable: %d\n\n", + (tmp_reg & INTR_SLE) ? 1 : 0, + (tmp_reg & INTR_SRE) ? 1 : 0, + (tmp_reg & INTR_URE) ? 1 : 0, + (tmp_reg & INTR_SEE) ? 1 : 0, + (tmp_reg & INTR_PCE) ? 1 : 0, + (tmp_reg & INTR_UEE) ? 1 : 0, + (tmp_reg & INTR_UE) ? 1 : 0); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->frindex); + t = scnprintf(next, size, + "USB Frame Index Reg:\n" + "Frame Number is 0x%08x\n\n", + (tmp_reg & FRINDEX_MASK)); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->deviceaddr); + t = scnprintf(next, size, + "USB Device Address Reg:\n" + "Device Addr is 0x%x\n\n", + USBADR(tmp_reg)); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->endpointlistaddr); + t = scnprintf(next, size, + "USB Endpoint List Address Reg:\n" + "Endpoint List Pointer is 0x%x\n\n", + EPBASE(tmp_reg)); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->portsc1); + t = scnprintf(next, size, + "USB Port Status & Control Reg:\n" + "Port Reset: %s\n" + "Port Suspend Mode: %s\n" + "Over-current Change: %s\n" + "Port Enable/Disable Change: %s\n" + "Port Enabled/Disabled: %s\n" + "Current Connect Status: %s\n\n", + (tmp_reg & PORTS_PR) ? "Reset" : "Not Reset", + (tmp_reg & PORTS_SUSP) ? "Suspend " : "Not Suspend", + (tmp_reg & PORTS_OCC) ? "Detected" : "No", + (tmp_reg & PORTS_PEC) ? "Changed" : "Not Changed", + (tmp_reg & PORTS_PE) ? "Enable" : "Not Correct", + (tmp_reg & PORTS_CCS) ? "Attached" : "Not Attached"); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->devlc); + t = scnprintf(next, size, + "Device LPM Control Reg:\n" + "Parallel Transceiver : %d\n" + "Serial Transceiver : %d\n" + "Port Speed: %s\n" + "Port Force Full Speed Connenct: %s\n" + "PHY Low Power Suspend Clock Disable: %s\n" + "BmAttributes: %d\n\n", + LPM_PTS(tmp_reg), + (tmp_reg & LPM_STS) ? 1 : 0, + ({ + char *s; + switch (LPM_PSPD(tmp_reg)) { + case LPM_SPEED_FULL: + s = "Full Speed"; break; + case LPM_SPEED_LOW: + s = "Low Speed"; break; + case LPM_SPEED_HIGH: + s = "High Speed"; break; + default: + s = "Unknown Speed"; break; + } + s; + }), + (tmp_reg & LPM_PFSC) ? "Force Full Speed" : "Not Force", + (tmp_reg & LPM_PHCD) ? "Disabled" : "Enabled", + LPM_BA(tmp_reg)); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->usbmode); + t = scnprintf(next, size, + "USB Mode Reg:\n" + "Controller Mode is : %s\n\n", ({ + char *s; + switch (MODE_CM(tmp_reg)) { + case MODE_IDLE: + s = "Idle"; break; + case MODE_DEVICE: + s = "Device Controller"; break; + case MODE_HOST: + s = "Host Controller"; break; + default: + s = "None"; break; + } + s; + })); + size -= t; + next += t; + + tmp_reg = readl(&dev->op_regs->endptsetupstat); + t = scnprintf(next, size, + "Endpoint Setup Status Reg:\n" + "SETUP on ep 0x%04x\n\n", + tmp_reg & SETUPSTAT_MASK); + size -= t; + next += t; + + for (i = 0; i < dev->ep_max / 2; i++) { + tmp_reg = readl(&dev->op_regs->endptctrl[i]); + t = scnprintf(next, size, "EP Ctrl Reg [%d]: 0x%08x\n", + i, tmp_reg); + size -= t; + next += t; + } + tmp_reg = readl(&dev->op_regs->endptprime); + t = scnprintf(next, size, "EP Prime Reg: 0x%08x\n\n", tmp_reg); + size -= t; + next += t; + + /* langwell_udc, langwell_ep, langwell_request structure information */ + ep = &dev->ep[0]; + t = scnprintf(next, size, "%s MaxPacketSize: 0x%x, ep_num: %d\n", + ep->ep.name, ep->ep.maxpacket, ep->ep_num); + size -= t; + next += t; + + if (list_empty(&ep->queue)) { + t = scnprintf(next, size, "its req queue is empty\n\n"); + size -= t; + next += t; + } else { + list_for_each_entry(req, &ep->queue, queue) { + t = scnprintf(next, size, + "req %p actual 0x%x length 0x%x buf %p\n", + &req->req, req->req.actual, + req->req.length, req->req.buf); + size -= t; + next += t; + } + } + /* other gadget->eplist ep */ + list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) { + if (ep->desc) { + t = scnprintf(next, size, + "\n%s MaxPacketSize: 0x%x, " + "ep_num: %d\n", + ep->ep.name, ep->ep.maxpacket, + ep->ep_num); + size -= t; + next += t; + + if (list_empty(&ep->queue)) { + t = scnprintf(next, size, + "its req queue is empty\n\n"); + size -= t; + next += t; + } else { + list_for_each_entry(req, &ep->queue, queue) { + t = scnprintf(next, size, + "req %p actual 0x%x length " + "0x%x buf %p\n", + &req->req, req->req.actual, + req->req.length, req->req.buf); + size -= t; + next += t; + } + } + } + } + + spin_unlock_irqrestore(&dev->lock, flags); + return PAGE_SIZE - size; +} +static DEVICE_ATTR(langwell_udc, S_IRUGO, show_langwell_udc, NULL); + + +/*-------------------------------------------------------------------------*/ + +/* + * when a driver is successfully registered, it will receive + * control requests including set_configuration(), which enables + * non-control requests. then usb traffic follows until a + * disconnect is reported. then a host may connect again, or + * the driver might get unbound. + */ + +int usb_gadget_register_driver(struct usb_gadget_driver *driver) +{ + struct langwell_udc *dev = the_controller; + unsigned long flags; + int retval; + + if (!dev) + return -ENODEV; + + DBG(dev, "---> %s()\n", __func__); + + if (dev->driver) + return -EBUSY; + + spin_lock_irqsave(&dev->lock, flags); + + /* hook up the driver ... */ + driver->driver.bus = NULL; + dev->driver = driver; + dev->gadget.dev.driver = &driver->driver; + + spin_unlock_irqrestore(&dev->lock, flags); + + retval = driver->bind(&dev->gadget); + if (retval) { + DBG(dev, "bind to driver %s --> %d\n", + driver->driver.name, retval); + dev->driver = NULL; + dev->gadget.dev.driver = NULL; + return retval; + } + + retval = device_create_file(&dev->pdev->dev, &dev_attr_function); + if (retval) + goto err_unbind; + + dev->usb_state = USB_STATE_ATTACHED; + dev->ep0_state = WAIT_FOR_SETUP; + dev->ep0_dir = USB_DIR_OUT; + + /* enable interrupt and set controller to run state */ + if (dev->got_irq) + langwell_udc_start(dev); + + VDBG(dev, "After langwell_udc_start(), print all registers:\n"); +#ifdef VERBOSE + print_all_registers(dev); +#endif + + INFO(dev, "register driver: %s\n", driver->driver.name); + VDBG(dev, "<--- %s()\n", __func__); + return 0; + +err_unbind: + driver->unbind(&dev->gadget); + dev->gadget.dev.driver = NULL; + dev->driver = NULL; + + DBG(dev, "<--- %s()\n", __func__); + return retval; +} +EXPORT_SYMBOL(usb_gadget_register_driver); + + +/* unregister gadget driver */ +int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) +{ + struct langwell_udc *dev = the_controller; + unsigned long flags; + + if (!dev) + return -ENODEV; + + DBG(dev, "---> %s()\n", __func__); + + if (unlikely(!driver || !driver->bind || !driver->unbind)) + return -EINVAL; + + /* unbind OTG transceiver */ + if (dev->transceiver) + (void)otg_set_peripheral(dev->transceiver, 0); + + /* disable interrupt and set controller to stop state */ + langwell_udc_stop(dev); + + dev->usb_state = USB_STATE_ATTACHED; + dev->ep0_state = WAIT_FOR_SETUP; + dev->ep0_dir = USB_DIR_OUT; + + spin_lock_irqsave(&dev->lock, flags); + + /* stop all usb activities */ + dev->gadget.speed = USB_SPEED_UNKNOWN; + stop_activity(dev, driver); + spin_unlock_irqrestore(&dev->lock, flags); + + /* unbind gadget driver */ + driver->unbind(&dev->gadget); + dev->gadget.dev.driver = NULL; + dev->driver = NULL; + + device_remove_file(&dev->pdev->dev, &dev_attr_function); + + INFO(dev, "unregistered driver '%s'\n", driver->driver.name); + DBG(dev, "<--- %s()\n", __func__); + return 0; +} +EXPORT_SYMBOL(usb_gadget_unregister_driver); + + +/*-------------------------------------------------------------------------*/ + +/* + * setup tripwire is used as a semaphore to ensure that the setup data + * payload is extracted from a dQH without being corrupted + */ +static void setup_tripwire(struct langwell_udc *dev) +{ + u32 usbcmd, + endptsetupstat; + unsigned long timeout; + struct langwell_dqh *dqh; + + VDBG(dev, "---> %s()\n", __func__); + + /* ep0 OUT dQH */ + dqh = &dev->ep_dqh[EP_DIR_OUT]; + + /* Write-Clear endptsetupstat */ + endptsetupstat = readl(&dev->op_regs->endptsetupstat); + writel(endptsetupstat, &dev->op_regs->endptsetupstat); + + /* wait until endptsetupstat is cleared */ + timeout = jiffies + SETUPSTAT_TIMEOUT; + while (readl(&dev->op_regs->endptsetupstat)) { + if (time_after(jiffies, timeout)) { + ERROR(dev, "setup_tripwire timeout\n"); + break; + } + cpu_relax(); + } + + /* while a hazard exists when setup packet arrives */ + do { + /* set setup tripwire bit */ + usbcmd = readl(&dev->op_regs->usbcmd); + writel(usbcmd | CMD_SUTW, &dev->op_regs->usbcmd); + + /* copy the setup packet to local buffer */ + memcpy(&dev->local_setup_buff, &dqh->dqh_setup, 8); + } while (!(readl(&dev->op_regs->usbcmd) & CMD_SUTW)); + + /* Write-Clear setup tripwire bit */ + usbcmd = readl(&dev->op_regs->usbcmd); + writel(usbcmd & ~CMD_SUTW, &dev->op_regs->usbcmd); + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* protocol ep0 stall, will automatically be cleared on new transaction */ +static void ep0_stall(struct langwell_udc *dev) +{ + u32 endptctrl; + + VDBG(dev, "---> %s()\n", __func__); + + /* set TX and RX to stall */ + endptctrl = readl(&dev->op_regs->endptctrl[0]); + endptctrl |= EPCTRL_TXS | EPCTRL_RXS; + writel(endptctrl, &dev->op_regs->endptctrl[0]); + + /* update ep0 state */ + dev->ep0_state = WAIT_FOR_SETUP; + dev->ep0_dir = USB_DIR_OUT; + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* PRIME a status phase for ep0 */ +static int prime_status_phase(struct langwell_udc *dev, int dir) +{ + struct langwell_request *req; + struct langwell_ep *ep; + int status = 0; + + VDBG(dev, "---> %s()\n", __func__); + + if (dir == EP_DIR_IN) + dev->ep0_dir = USB_DIR_IN; + else + dev->ep0_dir = USB_DIR_OUT; + + ep = &dev->ep[0]; + dev->ep0_state = WAIT_FOR_OUT_STATUS; + + req = dev->status_req; + + req->ep = ep; + req->req.length = 0; + req->req.status = -EINPROGRESS; + req->req.actual = 0; + req->req.complete = NULL; + req->dtd_count = 0; + + if (!req_to_dtd(req)) + status = queue_dtd(ep, req); + else + return -ENOMEM; + + if (status) + ERROR(dev, "can't queue ep0 status request\n"); + + list_add_tail(&req->queue, &ep->queue); + + VDBG(dev, "<--- %s()\n", __func__); + return status; +} + + +/* SET_ADDRESS request routine */ +static void set_address(struct langwell_udc *dev, u16 value, + u16 index, u16 length) +{ + VDBG(dev, "---> %s()\n", __func__); + + /* save the new address to device struct */ + dev->dev_addr = (u8) value; + VDBG(dev, "dev->dev_addr = %d\n", dev->dev_addr); + + /* update usb state */ + dev->usb_state = USB_STATE_ADDRESS; + + /* STATUS phase */ + if (prime_status_phase(dev, EP_DIR_IN)) + ep0_stall(dev); + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* return endpoint by windex */ +static struct langwell_ep *get_ep_by_windex(struct langwell_udc *dev, + u16 wIndex) +{ + struct langwell_ep *ep; + VDBG(dev, "---> %s()\n", __func__); + + if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0) + return &dev->ep[0]; + + list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) { + u8 bEndpointAddress; + if (!ep->desc) + continue; + + bEndpointAddress = ep->desc->bEndpointAddress; + if ((wIndex ^ bEndpointAddress) & USB_DIR_IN) + continue; + + if ((wIndex & USB_ENDPOINT_NUMBER_MASK) + == (bEndpointAddress & USB_ENDPOINT_NUMBER_MASK)) + return ep; + } + + VDBG(dev, "<--- %s()\n", __func__); + return NULL; +} + + +/* return whether endpoint is stalled, 0: not stalled; 1: stalled */ +static int ep_is_stall(struct langwell_ep *ep) +{ + struct langwell_udc *dev = ep->dev; + u32 endptctrl; + int retval; + + VDBG(dev, "---> %s()\n", __func__); + + endptctrl = readl(&dev->op_regs->endptctrl[ep->ep_num]); + if (is_in(ep)) + retval = endptctrl & EPCTRL_TXS ? 1 : 0; + else + retval = endptctrl & EPCTRL_RXS ? 1 : 0; + + VDBG(dev, "<--- %s()\n", __func__); + return retval; +} + + +/* GET_STATUS request routine */ +static void get_status(struct langwell_udc *dev, u8 request_type, u16 value, + u16 index, u16 length) +{ + struct langwell_request *req; + struct langwell_ep *ep; + u16 status_data = 0; /* 16 bits cpu view status data */ + int status = 0; + + VDBG(dev, "---> %s()\n", __func__); + + ep = &dev->ep[0]; + + if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) { + /* get device status */ + status_data = 1 << USB_DEVICE_SELF_POWERED; + status_data |= dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP; + } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) { + /* get interface status */ + status_data = 0; + } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { + /* get endpoint status */ + struct langwell_ep *epn; + epn = get_ep_by_windex(dev, index); + /* stall if endpoint doesn't exist */ + if (!epn) + goto stall; + + status_data = ep_is_stall(epn) << USB_ENDPOINT_HALT; + } + + dev->ep0_dir = USB_DIR_IN; + + /* borrow the per device status_req */ + req = dev->status_req; + + /* fill in the reqest structure */ + *((u16 *) req->req.buf) = cpu_to_le16(status_data); + req->ep = ep; + req->req.length = 2; + req->req.status = -EINPROGRESS; + req->req.actual = 0; + req->req.complete = NULL; + req->dtd_count = 0; + + /* prime the data phase */ + if (!req_to_dtd(req)) + status = queue_dtd(ep, req); + else /* no mem */ + goto stall; + + if (status) { + ERROR(dev, "response error on GET_STATUS request\n"); + goto stall; + } + + list_add_tail(&req->queue, &ep->queue); + dev->ep0_state = DATA_STATE_XMIT; + + VDBG(dev, "<--- %s()\n", __func__); + return; +stall: + ep0_stall(dev); + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* setup packet interrupt handler */ +static void handle_setup_packet(struct langwell_udc *dev, + struct usb_ctrlrequest *setup) +{ + u16 wValue = le16_to_cpu(setup->wValue); + u16 wIndex = le16_to_cpu(setup->wIndex); + u16 wLength = le16_to_cpu(setup->wLength); + + VDBG(dev, "---> %s()\n", __func__); + + /* ep0 fifo flush */ + nuke(&dev->ep[0], -ESHUTDOWN); + + DBG(dev, "SETUP %02x.%02x v%04x i%04x l%04x\n", + setup->bRequestType, setup->bRequest, + wValue, wIndex, wLength); + + /* RNDIS gadget delegate */ + if ((setup->bRequestType == 0x21) && (setup->bRequest == 0x00)) { + /* USB_CDC_SEND_ENCAPSULATED_COMMAND */ + goto delegate; + } + + /* USB_CDC_GET_ENCAPSULATED_RESPONSE */ + if ((setup->bRequestType == 0xa1) && (setup->bRequest == 0x01)) { + /* USB_CDC_GET_ENCAPSULATED_RESPONSE */ + goto delegate; + } + + /* We process some stardard setup requests here */ + switch (setup->bRequest) { + case USB_REQ_GET_STATUS: + DBG(dev, "SETUP: USB_REQ_GET_STATUS\n"); + /* get status, DATA and STATUS phase */ + if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK)) + != (USB_DIR_IN | USB_TYPE_STANDARD)) + break; + get_status(dev, setup->bRequestType, wValue, wIndex, wLength); + goto end; + + case USB_REQ_SET_ADDRESS: + DBG(dev, "SETUP: USB_REQ_SET_ADDRESS\n"); + /* STATUS phase */ + if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD + | USB_RECIP_DEVICE)) + break; + set_address(dev, wValue, wIndex, wLength); + goto end; + + case USB_REQ_CLEAR_FEATURE: + case USB_REQ_SET_FEATURE: + /* STATUS phase */ + { + int rc = -EOPNOTSUPP; + if (setup->bRequest == USB_REQ_SET_FEATURE) + DBG(dev, "SETUP: USB_REQ_SET_FEATURE\n"); + else if (setup->bRequest == USB_REQ_CLEAR_FEATURE) + DBG(dev, "SETUP: USB_REQ_CLEAR_FEATURE\n"); + + if ((setup->bRequestType & (USB_RECIP_MASK | USB_TYPE_MASK)) + == (USB_RECIP_ENDPOINT | USB_TYPE_STANDARD)) { + struct langwell_ep *epn; + epn = get_ep_by_windex(dev, wIndex); + /* stall if endpoint doesn't exist */ + if (!epn) { + ep0_stall(dev); + goto end; + } + + if (wValue != 0 || wLength != 0 + || epn->ep_num > dev->ep_max) + break; + + spin_unlock(&dev->lock); + rc = langwell_ep_set_halt(&epn->ep, + (setup->bRequest == USB_REQ_SET_FEATURE) + ? 1 : 0); + spin_lock(&dev->lock); + + } else if ((setup->bRequestType & (USB_RECIP_MASK + | USB_TYPE_MASK)) == (USB_RECIP_DEVICE + | USB_TYPE_STANDARD)) { + if (!gadget_is_otg(&dev->gadget)) + break; + else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE) { + dev->gadget.b_hnp_enable = 1; +#ifdef OTG_TRANSCEIVER + if (!dev->lotg->otg.default_a) + dev->lotg->hsm.b_hnp_enable = 1; +#endif + } else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT) + dev->gadget.a_hnp_support = 1; + else if (setup->bRequest == + USB_DEVICE_A_ALT_HNP_SUPPORT) + dev->gadget.a_alt_hnp_support = 1; + else + break; + rc = 0; + } else + break; + + if (rc == 0) { + if (prime_status_phase(dev, EP_DIR_IN)) + ep0_stall(dev); + } + goto end; + } + + case USB_REQ_GET_DESCRIPTOR: + DBG(dev, "SETUP: USB_REQ_GET_DESCRIPTOR\n"); + goto delegate; + + case USB_REQ_SET_DESCRIPTOR: + DBG(dev, "SETUP: USB_REQ_SET_DESCRIPTOR unsupported\n"); + goto delegate; + + case USB_REQ_GET_CONFIGURATION: + DBG(dev, "SETUP: USB_REQ_GET_CONFIGURATION\n"); + goto delegate; + + case USB_REQ_SET_CONFIGURATION: + DBG(dev, "SETUP: USB_REQ_SET_CONFIGURATION\n"); + goto delegate; + + case USB_REQ_GET_INTERFACE: + DBG(dev, "SETUP: USB_REQ_GET_INTERFACE\n"); + goto delegate; + + case USB_REQ_SET_INTERFACE: + DBG(dev, "SETUP: USB_REQ_SET_INTERFACE\n"); + goto delegate; + + case USB_REQ_SYNCH_FRAME: + DBG(dev, "SETUP: USB_REQ_SYNCH_FRAME unsupported\n"); + goto delegate; + + default: + /* delegate USB standard requests to the gadget driver */ + goto delegate; +delegate: + /* USB requests handled by gadget */ + if (wLength) { + /* DATA phase from gadget, STATUS phase from udc */ + dev->ep0_dir = (setup->bRequestType & USB_DIR_IN) + ? USB_DIR_IN : USB_DIR_OUT; + VDBG(dev, "dev->ep0_dir = 0x%x, wLength = %d\n", + dev->ep0_dir, wLength); + spin_unlock(&dev->lock); + if (dev->driver->setup(&dev->gadget, + &dev->local_setup_buff) < 0) + ep0_stall(dev); + spin_lock(&dev->lock); + dev->ep0_state = (setup->bRequestType & USB_DIR_IN) + ? DATA_STATE_XMIT : DATA_STATE_RECV; + } else { + /* no DATA phase, IN STATUS phase from gadget */ + dev->ep0_dir = USB_DIR_IN; + VDBG(dev, "dev->ep0_dir = 0x%x, wLength = %d\n", + dev->ep0_dir, wLength); + spin_unlock(&dev->lock); + if (dev->driver->setup(&dev->gadget, + &dev->local_setup_buff) < 0) + ep0_stall(dev); + spin_lock(&dev->lock); + dev->ep0_state = WAIT_FOR_OUT_STATUS; + } + break; + } +end: + VDBG(dev, "<--- %s()\n", __func__); + return; +} + + +/* transfer completion, process endpoint request and free the completed dTDs + * for this request + */ +static int process_ep_req(struct langwell_udc *dev, int index, + struct langwell_request *curr_req) +{ + struct langwell_dtd *curr_dtd; + struct langwell_dqh *curr_dqh; + int td_complete, actual, remaining_length; + int i, dir; + u8 dtd_status = 0; + int retval = 0; + + curr_dqh = &dev->ep_dqh[index]; + dir = index % 2; + + curr_dtd = curr_req->head; + td_complete = 0; + actual = curr_req->req.length; + + VDBG(dev, "---> %s()\n", __func__); + + for (i = 0; i < curr_req->dtd_count; i++) { + remaining_length = le16_to_cpu(curr_dtd->dtd_total); + actual -= remaining_length; + + /* command execution states by dTD */ + dtd_status = curr_dtd->dtd_status; + + if (!dtd_status) { + /* transfers completed successfully */ + if (!remaining_length) { + td_complete++; + VDBG(dev, "dTD transmitted successfully\n"); + } else { + if (dir) { + VDBG(dev, "TX dTD remains data\n"); + retval = -EPROTO; + break; + + } else { + td_complete++; + break; + } + } + } else { + /* transfers completed with errors */ + if (dtd_status & DTD_STS_ACTIVE) { + DBG(dev, "request not completed\n"); + retval = 1; + return retval; + } else if (dtd_status & DTD_STS_HALTED) { + ERROR(dev, "dTD error %08x dQH[%d]\n", + dtd_status, index); + /* clear the errors and halt condition */ + curr_dqh->dtd_status = 0; + retval = -EPIPE; + break; + } else if (dtd_status & DTD_STS_DBE) { + DBG(dev, "data buffer (overflow) error\n"); + retval = -EPROTO; + break; + } else if (dtd_status & DTD_STS_TRE) { + DBG(dev, "transaction(ISO) error\n"); + retval = -EILSEQ; + break; + } else + ERROR(dev, "unknown error (0x%x)!\n", + dtd_status); + } + + if (i != curr_req->dtd_count - 1) + curr_dtd = (struct langwell_dtd *) + curr_dtd->next_dtd_virt; + } + + if (retval) + return retval; + + curr_req->req.actual = actual; + + VDBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* complete DATA or STATUS phase of ep0 prime status phase if needed */ +static void ep0_req_complete(struct langwell_udc *dev, + struct langwell_ep *ep0, struct langwell_request *req) +{ + u32 new_addr; + VDBG(dev, "---> %s()\n", __func__); + + if (dev->usb_state == USB_STATE_ADDRESS) { + /* set the new address */ + new_addr = (u32)dev->dev_addr; + writel(new_addr << USBADR_SHIFT, &dev->op_regs->deviceaddr); + + new_addr = USBADR(readl(&dev->op_regs->deviceaddr)); + VDBG(dev, "new_addr = %d\n", new_addr); + } + + done(ep0, req, 0); + + switch (dev->ep0_state) { + case DATA_STATE_XMIT: + /* receive status phase */ + if (prime_status_phase(dev, EP_DIR_OUT)) + ep0_stall(dev); + break; + case DATA_STATE_RECV: + /* send status phase */ + if (prime_status_phase(dev, EP_DIR_IN)) + ep0_stall(dev); + break; + case WAIT_FOR_OUT_STATUS: + dev->ep0_state = WAIT_FOR_SETUP; + break; + case WAIT_FOR_SETUP: + ERROR(dev, "unexpect ep0 packets\n"); + break; + default: + ep0_stall(dev); + break; + } + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* USB transfer completion interrupt */ +static void handle_trans_complete(struct langwell_udc *dev) +{ + u32 complete_bits; + int i, ep_num, dir, bit_mask, status; + struct langwell_ep *epn; + struct langwell_request *curr_req, *temp_req; + + VDBG(dev, "---> %s()\n", __func__); + + complete_bits = readl(&dev->op_regs->endptcomplete); + VDBG(dev, "endptcomplete register: 0x%08x\n", complete_bits); + + /* Write-Clear the bits in endptcomplete register */ + writel(complete_bits, &dev->op_regs->endptcomplete); + + if (!complete_bits) { + DBG(dev, "complete_bits = 0\n"); + goto done; + } + + for (i = 0; i < dev->ep_max; i++) { + ep_num = i / 2; + dir = i % 2; + + bit_mask = 1 << (ep_num + 16 * dir); + + if (!(complete_bits & bit_mask)) + continue; + + /* ep0 */ + if (i == 1) + epn = &dev->ep[0]; + else + epn = &dev->ep[i]; + + if (epn->name == NULL) { + WARNING(dev, "invalid endpoint\n"); + continue; + } + + if (i < 2) + /* ep0 in and out */ + DBG(dev, "%s-%s transfer completed\n", + epn->name, + is_in(epn) ? "in" : "out"); + else + DBG(dev, "%s transfer completed\n", epn->name); + + /* process the req queue until an uncomplete request */ + list_for_each_entry_safe(curr_req, temp_req, + &epn->queue, queue) { + status = process_ep_req(dev, i, curr_req); + VDBG(dev, "%s req status: %d\n", epn->name, status); + + if (status) + break; + + /* write back status to req */ + curr_req->req.status = status; + + /* ep0 request completion */ + if (ep_num == 0) { + ep0_req_complete(dev, epn, curr_req); + break; + } else { + done(epn, curr_req, status); + } + } + } +done: + VDBG(dev, "<--- %s()\n", __func__); + return; +} + + +/* port change detect interrupt handler */ +static void handle_port_change(struct langwell_udc *dev) +{ + u32 portsc1, devlc; + u32 speed; + + VDBG(dev, "---> %s()\n", __func__); + + if (dev->bus_reset) + dev->bus_reset = 0; + + portsc1 = readl(&dev->op_regs->portsc1); + devlc = readl(&dev->op_regs->devlc); + VDBG(dev, "portsc1 = 0x%08x, devlc = 0x%08x\n", + portsc1, devlc); + + /* bus reset is finished */ + if (!(portsc1 & PORTS_PR)) { + /* get the speed */ + speed = LPM_PSPD(devlc); + switch (speed) { + case LPM_SPEED_HIGH: + dev->gadget.speed = USB_SPEED_HIGH; + break; + case LPM_SPEED_FULL: + dev->gadget.speed = USB_SPEED_FULL; + break; + case LPM_SPEED_LOW: + dev->gadget.speed = USB_SPEED_LOW; + break; + default: + dev->gadget.speed = USB_SPEED_UNKNOWN; + break; + } + VDBG(dev, "speed = %d, dev->gadget.speed = %d\n", + speed, dev->gadget.speed); + } + + /* LPM L0 to L1 */ + if (dev->lpm && dev->lpm_state == LPM_L0) + if (portsc1 & PORTS_SUSP && portsc1 & PORTS_SLP) { + INFO(dev, "LPM L0 to L1\n"); + dev->lpm_state = LPM_L1; + } + + /* LPM L1 to L0, force resume or remote wakeup finished */ + if (dev->lpm && dev->lpm_state == LPM_L1) + if (!(portsc1 & PORTS_SUSP)) { + if (portsc1 & PORTS_SLP) + INFO(dev, "LPM L1 to L0, force resume\n"); + else + INFO(dev, "LPM L1 to L0, remote wakeup\n"); + + dev->lpm_state = LPM_L0; + } + + /* update USB state */ + if (!dev->resume_state) + dev->usb_state = USB_STATE_DEFAULT; + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* USB reset interrupt handler */ +static void handle_usb_reset(struct langwell_udc *dev) +{ + u32 deviceaddr, + endptsetupstat, + endptcomplete; + unsigned long timeout; + + VDBG(dev, "---> %s()\n", __func__); + + /* Write-Clear the device address */ + deviceaddr = readl(&dev->op_regs->deviceaddr); + writel(deviceaddr & ~USBADR_MASK, &dev->op_regs->deviceaddr); + + dev->dev_addr = 0; + + /* clear usb state */ + dev->resume_state = 0; + + /* LPM L1 to L0, reset */ + if (dev->lpm) + dev->lpm_state = LPM_L0; + + dev->ep0_dir = USB_DIR_OUT; + dev->ep0_state = WAIT_FOR_SETUP; + dev->remote_wakeup = 0; /* default to 0 on reset */ + dev->gadget.b_hnp_enable = 0; + dev->gadget.a_hnp_support = 0; + dev->gadget.a_alt_hnp_support = 0; + + /* Write-Clear all the setup token semaphores */ + endptsetupstat = readl(&dev->op_regs->endptsetupstat); + writel(endptsetupstat, &dev->op_regs->endptsetupstat); + + /* Write-Clear all the endpoint complete status bits */ + endptcomplete = readl(&dev->op_regs->endptcomplete); + writel(endptcomplete, &dev->op_regs->endptcomplete); + + /* wait until all endptprime bits cleared */ + timeout = jiffies + PRIME_TIMEOUT; + while (readl(&dev->op_regs->endptprime)) { + if (time_after(jiffies, timeout)) { + ERROR(dev, "USB reset timeout\n"); + break; + } + cpu_relax(); + } + + /* write 1s to endptflush register to clear any primed buffers */ + writel((u32) ~0, &dev->op_regs->endptflush); + + if (readl(&dev->op_regs->portsc1) & PORTS_PR) { + VDBG(dev, "USB bus reset\n"); + /* bus is reseting */ + dev->bus_reset = 1; + + /* reset all the queues, stop all USB activities */ + stop_activity(dev, dev->driver); + dev->usb_state = USB_STATE_DEFAULT; + } else { + VDBG(dev, "device controller reset\n"); + /* controller reset */ + langwell_udc_reset(dev); + + /* reset all the queues, stop all USB activities */ + stop_activity(dev, dev->driver); + + /* reset ep0 dQH and endptctrl */ + ep0_reset(dev); + + /* enable interrupt and set controller to run state */ + langwell_udc_start(dev); + + dev->usb_state = USB_STATE_ATTACHED; + } + +#ifdef OTG_TRANSCEIVER + /* refer to USB OTG 6.6.2.3 b_hnp_en is cleared */ + if (!dev->lotg->otg.default_a) + dev->lotg->hsm.b_hnp_enable = 0; +#endif + + VDBG(dev, "<--- %s()\n", __func__); +} + + +/* USB bus suspend/resume interrupt */ +static void handle_bus_suspend(struct langwell_udc *dev) +{ + u32 devlc; + DBG(dev, "---> %s()\n", __func__); + + dev->resume_state = dev->usb_state; + dev->usb_state = USB_STATE_SUSPENDED; + +#ifdef OTG_TRANSCEIVER + if (dev->lotg->otg.default_a) { + if (dev->lotg->hsm.b_bus_suspend_vld == 1) { + dev->lotg->hsm.b_bus_suspend = 1; + /* notify transceiver the state changes */ + if (spin_trylock(&dev->lotg->wq_lock)) { + langwell_update_transceiver(); + spin_unlock(&dev->lotg->wq_lock); + } + } + dev->lotg->hsm.b_bus_suspend_vld++; + } else { + if (!dev->lotg->hsm.a_bus_suspend) { + dev->lotg->hsm.a_bus_suspend = 1; + /* notify transceiver the state changes */ + if (spin_trylock(&dev->lotg->wq_lock)) { + langwell_update_transceiver(); + spin_unlock(&dev->lotg->wq_lock); + } + } + } +#endif + + /* report suspend to the driver */ + if (dev->driver) { + if (dev->driver->suspend) { + spin_unlock(&dev->lock); + dev->driver->suspend(&dev->gadget); + spin_lock(&dev->lock); + DBG(dev, "suspend %s\n", dev->driver->driver.name); + } + } + + /* enter PHY low power suspend */ + devlc = readl(&dev->op_regs->devlc); + VDBG(dev, "devlc = 0x%08x\n", devlc); + devlc |= LPM_PHCD; + writel(devlc, &dev->op_regs->devlc); + + DBG(dev, "<--- %s()\n", __func__); +} + + +static void handle_bus_resume(struct langwell_udc *dev) +{ + u32 devlc; + DBG(dev, "---> %s()\n", __func__); + + dev->usb_state = dev->resume_state; + dev->resume_state = 0; + + /* exit PHY low power suspend */ + devlc = readl(&dev->op_regs->devlc); + VDBG(dev, "devlc = 0x%08x\n", devlc); + devlc &= ~LPM_PHCD; + writel(devlc, &dev->op_regs->devlc); + +#ifdef OTG_TRANSCEIVER + if (dev->lotg->otg.default_a == 0) + dev->lotg->hsm.a_bus_suspend = 0; +#endif + + /* report resume to the driver */ + if (dev->driver) { + if (dev->driver->resume) { + spin_unlock(&dev->lock); + dev->driver->resume(&dev->gadget); + spin_lock(&dev->lock); + DBG(dev, "resume %s\n", dev->driver->driver.name); + } + } + + DBG(dev, "<--- %s()\n", __func__); +} + + +/* USB device controller interrupt handler */ +static irqreturn_t langwell_irq(int irq, void *_dev) +{ + struct langwell_udc *dev = _dev; + u32 usbsts, + usbintr, + irq_sts, + portsc1; + + VDBG(dev, "---> %s()\n", __func__); + + if (dev->stopped) { + VDBG(dev, "handle IRQ_NONE\n"); + VDBG(dev, "<--- %s()\n", __func__); + return IRQ_NONE; + } + + spin_lock(&dev->lock); + + /* USB status */ + usbsts = readl(&dev->op_regs->usbsts); + + /* USB interrupt enable */ + usbintr = readl(&dev->op_regs->usbintr); + + irq_sts = usbsts & usbintr; + VDBG(dev, "usbsts = 0x%08x, usbintr = 0x%08x, irq_sts = 0x%08x\n", + usbsts, usbintr, irq_sts); + + if (!irq_sts) { + VDBG(dev, "handle IRQ_NONE\n"); + VDBG(dev, "<--- %s()\n", __func__); + spin_unlock(&dev->lock); + return IRQ_NONE; + } + + /* Write-Clear interrupt status bits */ + writel(irq_sts, &dev->op_regs->usbsts); + + /* resume from suspend */ + portsc1 = readl(&dev->op_regs->portsc1); + if (dev->usb_state == USB_STATE_SUSPENDED) + if (!(portsc1 & PORTS_SUSP)) + handle_bus_resume(dev); + + /* USB interrupt */ + if (irq_sts & STS_UI) { + VDBG(dev, "USB interrupt\n"); + + /* setup packet received from ep0 */ + if (readl(&dev->op_regs->endptsetupstat) + & EP0SETUPSTAT_MASK) { + VDBG(dev, "USB SETUP packet received interrupt\n"); + /* setup tripwire semaphone */ + setup_tripwire(dev); + handle_setup_packet(dev, &dev->local_setup_buff); + } + + /* USB transfer completion */ + if (readl(&dev->op_regs->endptcomplete)) { + VDBG(dev, "USB transfer completion interrupt\n"); + handle_trans_complete(dev); + } + } + + /* SOF received interrupt (for ISO transfer) */ + if (irq_sts & STS_SRI) { + /* FIXME */ + /* VDBG(dev, "SOF received interrupt\n"); */ + } + + /* port change detect interrupt */ + if (irq_sts & STS_PCI) { + VDBG(dev, "port change detect interrupt\n"); + handle_port_change(dev); + } + + /* suspend interrrupt */ + if (irq_sts & STS_SLI) { + VDBG(dev, "suspend interrupt\n"); + handle_bus_suspend(dev); + } + + /* USB reset interrupt */ + if (irq_sts & STS_URI) { + VDBG(dev, "USB reset interrupt\n"); + handle_usb_reset(dev); + } + + /* USB error or system error interrupt */ + if (irq_sts & (STS_UEI | STS_SEI)) { + /* FIXME */ + WARNING(dev, "error IRQ, irq_sts: %x\n", irq_sts); + } + + spin_unlock(&dev->lock); + + VDBG(dev, "<--- %s()\n", __func__); + return IRQ_HANDLED; +} + + +/*-------------------------------------------------------------------------*/ + +/* release device structure */ +static void gadget_release(struct device *_dev) +{ + struct langwell_udc *dev = the_controller; + + DBG(dev, "---> %s()\n", __func__); + + complete(dev->done); + + DBG(dev, "<--- %s()\n", __func__); + kfree(dev); +} + + +/* tear down the binding between this driver and the pci device */ +static void langwell_udc_remove(struct pci_dev *pdev) +{ + struct langwell_udc *dev = the_controller; + + DECLARE_COMPLETION(done); + + BUG_ON(dev->driver); + DBG(dev, "---> %s()\n", __func__); + + dev->done = &done; + + /* free memory allocated in probe */ + if (dev->dtd_pool) + dma_pool_destroy(dev->dtd_pool); + + if (dev->status_req) { + kfree(dev->status_req->req.buf); + kfree(dev->status_req); + } + + if (dev->ep_dqh) + dma_free_coherent(&pdev->dev, dev->ep_dqh_size, + dev->ep_dqh, dev->ep_dqh_dma); + + kfree(dev->ep); + + /* diable IRQ handler */ + if (dev->got_irq) + free_irq(pdev->irq, dev); + +#ifndef OTG_TRANSCEIVER + if (dev->cap_regs) + iounmap(dev->cap_regs); + + if (dev->region) + release_mem_region(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0)); + + if (dev->enabled) + pci_disable_device(pdev); +#else + if (dev->transceiver) { + otg_put_transceiver(dev->transceiver); + dev->transceiver = NULL; + dev->lotg = NULL; + } +#endif + + dev->cap_regs = NULL; + + INFO(dev, "unbind\n"); + DBG(dev, "<--- %s()\n", __func__); + + device_unregister(&dev->gadget.dev); + device_remove_file(&pdev->dev, &dev_attr_langwell_udc); + +#ifndef OTG_TRANSCEIVER + pci_set_drvdata(pdev, NULL); +#endif + + /* free dev, wait for the release() finished */ + wait_for_completion(&done); + + the_controller = NULL; +} + + +/* + * wrap this driver around the specified device, but + * don't respond over USB until a gadget driver binds to us. + */ +static int langwell_udc_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct langwell_udc *dev; +#ifndef OTG_TRANSCEIVER + unsigned long resource, len; +#endif + void __iomem *base = NULL; + size_t size; + int retval; + + if (the_controller) { + dev_warn(&pdev->dev, "ignoring\n"); + return -EBUSY; + } + + /* alloc, and start init */ + dev = kzalloc(sizeof *dev, GFP_KERNEL); + if (dev == NULL) { + retval = -ENOMEM; + goto error; + } + + /* initialize device spinlock */ + spin_lock_init(&dev->lock); + + dev->pdev = pdev; + DBG(dev, "---> %s()\n", __func__); + +#ifdef OTG_TRANSCEIVER + /* PCI device is already enabled by otg_transceiver driver */ + dev->enabled = 1; + + /* mem region and register base */ + dev->region = 1; + dev->transceiver = otg_get_transceiver(); + dev->lotg = otg_to_langwell(dev->transceiver); + base = dev->lotg->regs; +#else + pci_set_drvdata(pdev, dev); + + /* now all the pci goodies ... */ + if (pci_enable_device(pdev) < 0) { + retval = -ENODEV; + goto error; + } + dev->enabled = 1; + + /* control register: BAR 0 */ + resource = pci_resource_start(pdev, 0); + len = pci_resource_len(pdev, 0); + if (!request_mem_region(resource, len, driver_name)) { + ERROR(dev, "controller already in use\n"); + retval = -EBUSY; + goto error; + } + dev->region = 1; + + base = ioremap_nocache(resource, len); +#endif + if (base == NULL) { + ERROR(dev, "can't map memory\n"); + retval = -EFAULT; + goto error; + } + + dev->cap_regs = (struct langwell_cap_regs __iomem *) base; + VDBG(dev, "dev->cap_regs: %p\n", dev->cap_regs); + dev->op_regs = (struct langwell_op_regs __iomem *) + (base + OP_REG_OFFSET); + VDBG(dev, "dev->op_regs: %p\n", dev->op_regs); + + /* irq setup after old hardware is cleaned up */ + if (!pdev->irq) { + ERROR(dev, "No IRQ. Check PCI setup!\n"); + retval = -ENODEV; + goto error; + } + +#ifndef OTG_TRANSCEIVER + INFO(dev, "irq %d, io mem: 0x%08lx, len: 0x%08lx, pci mem 0x%p\n", + pdev->irq, resource, len, base); + /* enables bus-mastering for device dev */ + pci_set_master(pdev); + + if (request_irq(pdev->irq, langwell_irq, IRQF_SHARED, + driver_name, dev) != 0) { + ERROR(dev, "request interrupt %d failed\n", pdev->irq); + retval = -EBUSY; + goto error; + } + dev->got_irq = 1; +#endif + + /* set stopped bit */ + dev->stopped = 1; + + /* capabilities and endpoint number */ + dev->lpm = (readl(&dev->cap_regs->hccparams) & HCC_LEN) ? 1 : 0; + dev->dciversion = readw(&dev->cap_regs->dciversion); + dev->devcap = (readl(&dev->cap_regs->dccparams) & DEVCAP) ? 1 : 0; + VDBG(dev, "dev->lpm: %d\n", dev->lpm); + VDBG(dev, "dev->dciversion: 0x%04x\n", dev->dciversion); + VDBG(dev, "dccparams: 0x%08x\n", readl(&dev->cap_regs->dccparams)); + VDBG(dev, "dev->devcap: %d\n", dev->devcap); + if (!dev->devcap) { + ERROR(dev, "can't support device mode\n"); + retval = -ENODEV; + goto error; + } + + /* a pair of endpoints (out/in) for each address */ + dev->ep_max = DEN(readl(&dev->cap_regs->dccparams)) * 2; + VDBG(dev, "dev->ep_max: %d\n", dev->ep_max); + + /* allocate endpoints memory */ + dev->ep = kzalloc(sizeof(struct langwell_ep) * dev->ep_max, + GFP_KERNEL); + if (!dev->ep) { + ERROR(dev, "allocate endpoints memory failed\n"); + retval = -ENOMEM; + goto error; + } + + /* allocate device dQH memory */ + size = dev->ep_max * sizeof(struct langwell_dqh); + VDBG(dev, "orig size = %d\n", size); + if (size < DQH_ALIGNMENT) + size = DQH_ALIGNMENT; + else if ((size % DQH_ALIGNMENT) != 0) { + size += DQH_ALIGNMENT + 1; + size &= ~(DQH_ALIGNMENT - 1); + } + dev->ep_dqh = dma_alloc_coherent(&pdev->dev, size, + &dev->ep_dqh_dma, GFP_KERNEL); + if (!dev->ep_dqh) { + ERROR(dev, "allocate dQH memory failed\n"); + retval = -ENOMEM; + goto error; + } + dev->ep_dqh_size = size; + VDBG(dev, "ep_dqh_size = %d\n", dev->ep_dqh_size); + + /* initialize ep0 status request structure */ + dev->status_req = kzalloc(sizeof(struct langwell_request), GFP_KERNEL); + if (!dev->status_req) { + ERROR(dev, "allocate status_req memory failed\n"); + retval = -ENOMEM; + goto error; + } + INIT_LIST_HEAD(&dev->status_req->queue); + + /* allocate a small amount of memory to get valid address */ + dev->status_req->req.buf = kmalloc(8, GFP_KERNEL); + dev->status_req->req.dma = virt_to_phys(dev->status_req->req.buf); + + dev->resume_state = USB_STATE_NOTATTACHED; + dev->usb_state = USB_STATE_POWERED; + dev->ep0_dir = USB_DIR_OUT; + dev->remote_wakeup = 0; /* default to 0 on reset */ + +#ifndef OTG_TRANSCEIVER + /* reset device controller */ + langwell_udc_reset(dev); +#endif + + /* initialize gadget structure */ + dev->gadget.ops = &langwell_ops; /* usb_gadget_ops */ + dev->gadget.ep0 = &dev->ep[0].ep; /* gadget ep0 */ + INIT_LIST_HEAD(&dev->gadget.ep_list); /* ep_list */ + dev->gadget.speed = USB_SPEED_UNKNOWN; /* speed */ + dev->gadget.is_dualspeed = 1; /* support dual speed */ +#ifdef OTG_TRANSCEIVER + dev->gadget.is_otg = 1; /* support otg mode */ +#endif + + /* the "gadget" abstracts/virtualizes the controller */ + dev_set_name(&dev->gadget.dev, "gadget"); + dev->gadget.dev.parent = &pdev->dev; + dev->gadget.dev.dma_mask = pdev->dev.dma_mask; + dev->gadget.dev.release = gadget_release; + dev->gadget.name = driver_name; /* gadget name */ + + /* controller endpoints reinit */ + eps_reinit(dev); + +#ifndef OTG_TRANSCEIVER + /* reset ep0 dQH and endptctrl */ + ep0_reset(dev); +#endif + + /* create dTD dma_pool resource */ + dev->dtd_pool = dma_pool_create("langwell_dtd", + &dev->pdev->dev, + sizeof(struct langwell_dtd), + DTD_ALIGNMENT, + DMA_BOUNDARY); + + if (!dev->dtd_pool) { + retval = -ENOMEM; + goto error; + } + + /* done */ + INFO(dev, "%s\n", driver_desc); + INFO(dev, "irq %d, pci mem %p\n", pdev->irq, base); + INFO(dev, "Driver version: " DRIVER_VERSION "\n"); + INFO(dev, "Support (max) %d endpoints\n", dev->ep_max); + INFO(dev, "Device interface version: 0x%04x\n", dev->dciversion); + INFO(dev, "Controller mode: %s\n", dev->devcap ? "Device" : "Host"); + INFO(dev, "Support USB LPM: %s\n", dev->lpm ? "Yes" : "No"); + + VDBG(dev, "After langwell_udc_probe(), print all registers:\n"); +#ifdef VERBOSE + print_all_registers(dev); +#endif + + the_controller = dev; + + retval = device_register(&dev->gadget.dev); + if (retval) + goto error; + + retval = device_create_file(&pdev->dev, &dev_attr_langwell_udc); + if (retval) + goto error; + + VDBG(dev, "<--- %s()\n", __func__); + return 0; + +error: + if (dev) { + DBG(dev, "<--- %s()\n", __func__); + langwell_udc_remove(pdev); + } + + return retval; +} + + +/* device controller suspend */ +static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct langwell_udc *dev = the_controller; + u32 devlc; + + DBG(dev, "---> %s()\n", __func__); + + /* disable interrupt and set controller to stop state */ + langwell_udc_stop(dev); + + /* diable IRQ handler */ + if (dev->got_irq) + free_irq(pdev->irq, dev); + dev->got_irq = 0; + + + /* save PCI state */ + pci_save_state(pdev); + + /* set device power state */ + pci_set_power_state(pdev, PCI_D3hot); + + /* enter PHY low power suspend */ + devlc = readl(&dev->op_regs->devlc); + VDBG(dev, "devlc = 0x%08x\n", devlc); + devlc |= LPM_PHCD; + writel(devlc, &dev->op_regs->devlc); + + DBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* device controller resume */ +static int langwell_udc_resume(struct pci_dev *pdev) +{ + struct langwell_udc *dev = the_controller; + u32 devlc; + + DBG(dev, "---> %s()\n", __func__); + + /* exit PHY low power suspend */ + devlc = readl(&dev->op_regs->devlc); + VDBG(dev, "devlc = 0x%08x\n", devlc); + devlc &= ~LPM_PHCD; + writel(devlc, &dev->op_regs->devlc); + + /* set device D0 power state */ + pci_set_power_state(pdev, PCI_D0); + + /* restore PCI state */ + pci_restore_state(pdev); + + /* enable IRQ handler */ + if (request_irq(pdev->irq, langwell_irq, IRQF_SHARED, driver_name, dev) + != 0) { + ERROR(dev, "request interrupt %d failed\n", pdev->irq); + return -1; + } + dev->got_irq = 1; + + /* reset and start controller to run state */ + if (dev->stopped) { + /* reset device controller */ + langwell_udc_reset(dev); + + /* reset ep0 dQH and endptctrl */ + ep0_reset(dev); + + /* start device if gadget is loaded */ + if (dev->driver) + langwell_udc_start(dev); + } + + /* reset USB status */ + dev->usb_state = USB_STATE_ATTACHED; + dev->ep0_state = WAIT_FOR_SETUP; + dev->ep0_dir = USB_DIR_OUT; + + DBG(dev, "<--- %s()\n", __func__); + return 0; +} + + +/* pci driver shutdown */ +static void langwell_udc_shutdown(struct pci_dev *pdev) +{ + struct langwell_udc *dev = the_controller; + u32 usbmode; + + DBG(dev, "---> %s()\n", __func__); + + /* reset controller mode to IDLE */ + usbmode = readl(&dev->op_regs->usbmode); + DBG(dev, "usbmode = 0x%08x\n", usbmode); + usbmode &= (~3 | MODE_IDLE); + writel(usbmode, &dev->op_regs->usbmode); + + DBG(dev, "<--- %s()\n", __func__); +} + +/*-------------------------------------------------------------------------*/ + +static const struct pci_device_id pci_ids[] = { { + .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), + .class_mask = ~0, + .vendor = 0x8086, + .device = 0x0811, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, +}, { /* end: all zeroes */ } +}; + + +MODULE_DEVICE_TABLE(pci, pci_ids); + + +static struct pci_driver langwell_pci_driver = { + .name = (char *) driver_name, + .id_table = pci_ids, + + .probe = langwell_udc_probe, + .remove = langwell_udc_remove, + + /* device controller suspend/resume */ + .suspend = langwell_udc_suspend, + .resume = langwell_udc_resume, + + .shutdown = langwell_udc_shutdown, +}; + + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Xiaochen Shen <xiaochen.shen@intel.com>"); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); + + +static int __init init(void) +{ +#ifdef OTG_TRANSCEIVER + return langwell_register_peripheral(&langwell_pci_driver); +#else + return pci_register_driver(&langwell_pci_driver); +#endif +} +module_init(init); + + +static void __exit cleanup(void) +{ +#ifdef OTG_TRANSCEIVER + return langwell_unregister_peripheral(&langwell_pci_driver); +#else + pci_unregister_driver(&langwell_pci_driver); +#endif +} +module_exit(cleanup); + diff --git a/drivers/usb/gadget/langwell_udc.h b/drivers/usb/gadget/langwell_udc.h new file mode 100644 index 000000000000..9719934e1c08 --- /dev/null +++ b/drivers/usb/gadget/langwell_udc.h @@ -0,0 +1,228 @@ +/* + * Intel Langwell USB Device Controller driver + * Copyright (C) 2008-2009, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <linux/usb/langwell_udc.h> + +#if defined(CONFIG_USB_LANGWELL_OTG) +#include <linux/usb/langwell_otg.h> +#endif + + +/*-------------------------------------------------------------------------*/ + +/* driver data structures and utilities */ + +/* + * dTD: Device Endpoint Transfer Descriptor + * describe to the device controller the location and quantity of + * data to be send/received for given transfer + */ +struct langwell_dtd { + u32 dtd_next; +/* bits 31:5, next transfer element pointer */ +#define DTD_NEXT(d) (((d)>>5)&0x7ffffff) +#define DTD_NEXT_MASK (0x7ffffff << 5) +/* terminate */ +#define DTD_TERM BIT(0) + /* bits 7:0, execution back states */ + u32 dtd_status:8; +#define DTD_STATUS(d) (((d)>>0)&0xff) +#define DTD_STS_ACTIVE BIT(7) /* active */ +#define DTD_STS_HALTED BIT(6) /* halted */ +#define DTD_STS_DBE BIT(5) /* data buffer error */ +#define DTD_STS_TRE BIT(3) /* transaction error */ + /* bits 9:8 */ + u32 dtd_res0:2; + /* bits 11:10, multipier override */ + u32 dtd_multo:2; +#define DTD_MULTO (BIT(11) | BIT(10)) + /* bits 14:12 */ + u32 dtd_res1:3; + /* bit 15, interrupt on complete */ + u32 dtd_ioc:1; +#define DTD_IOC BIT(15) + /* bits 30:16, total bytes */ + u32 dtd_total:15; +#define DTD_TOTAL(d) (((d)>>16)&0x7fff) +#define DTD_MAX_TRANSFER_LENGTH 0x4000 + /* bit 31 */ + u32 dtd_res2:1; + /* dTD buffer pointer page 0 to 4 */ + u32 dtd_buf[5]; +#define DTD_OFFSET_MASK 0xfff +/* bits 31:12, buffer pointer */ +#define DTD_BUFFER(d) (((d)>>12)&0x3ff) +/* bits 11:0, current offset */ +#define DTD_C_OFFSET(d) (((d)>>0)&0xfff) +/* bits 10:0, frame number */ +#define DTD_FRAME(d) (((d)>>0)&0x7ff) + + /* driver-private parts */ + + /* dtd dma address */ + dma_addr_t dtd_dma; + /* next dtd virtual address */ + struct langwell_dtd *next_dtd_virt; +}; + + +/* + * dQH: Device Endpoint Queue Head + * describe where all transfers are managed + * 48-byte data structure, aligned on 64-byte boundary + * + * These are associated with dTD structure + */ +struct langwell_dqh { + /* endpoint capabilities and characteristics */ + u32 dqh_res0:15; /* bits 14:0 */ + u32 dqh_ios:1; /* bit 15, interrupt on setup */ +#define DQH_IOS BIT(15) + u32 dqh_mpl:11; /* bits 26:16, maximum packet length */ +#define DQH_MPL (0x7ff << 16) + u32 dqh_res1:2; /* bits 28:27 */ + u32 dqh_zlt:1; /* bit 29, zero length termination */ +#define DQH_ZLT BIT(29) + u32 dqh_mult:2; /* bits 31:30 */ +#define DQH_MULT (BIT(30) | BIT(31)) + + /* current dTD pointer */ + u32 dqh_current; /* locate the transfer in progress */ +#define DQH_C_DTD(e) \ + (((e)>>5)&0x7ffffff) /* bits 31:5, current dTD pointer */ + + /* transfer overlay, hardware parts of a struct langwell_dtd */ + u32 dtd_next; + u32 dtd_status:8; /* bits 7:0, execution back states */ + u32 dtd_res0:2; /* bits 9:8 */ + u32 dtd_multo:2; /* bits 11:10, multipier override */ + u32 dtd_res1:3; /* bits 14:12 */ + u32 dtd_ioc:1; /* bit 15, interrupt on complete */ + u32 dtd_total:15; /* bits 30:16, total bytes */ + u32 dtd_res2:1; /* bit 31 */ + u32 dtd_buf[5]; /* dTD buffer pointer page 0 to 4 */ + + u32 dqh_res2; + struct usb_ctrlrequest dqh_setup; /* setup packet buffer */ +} __attribute__ ((aligned(64))); + + +/* endpoint data structure */ +struct langwell_ep { + struct usb_ep ep; + dma_addr_t dma; + struct langwell_udc *dev; + unsigned long irqs; + struct list_head queue; + struct langwell_dqh *dqh; + const struct usb_endpoint_descriptor *desc; + char name[14]; + unsigned stopped:1, + ep_type:2, + ep_num:8; +}; + + +/* request data structure */ +struct langwell_request { + struct usb_request req; + struct langwell_dtd *dtd, *head, *tail; + struct langwell_ep *ep; + dma_addr_t dtd_dma; + struct list_head queue; + unsigned dtd_count; + unsigned mapped:1; +}; + + +/* ep0 transfer state */ +enum ep0_state { + WAIT_FOR_SETUP, + DATA_STATE_XMIT, + DATA_STATE_NEED_ZLP, + WAIT_FOR_OUT_STATUS, + DATA_STATE_RECV, +}; + + +/* device suspend state */ +enum lpm_state { + LPM_L0, /* on */ + LPM_L1, /* LPM L1 sleep */ + LPM_L2, /* suspend */ + LPM_L3, /* off */ +}; + + +/* device data structure */ +struct langwell_udc { + /* each pci device provides one gadget, several endpoints */ + struct usb_gadget gadget; + spinlock_t lock; /* device lock */ + struct langwell_ep *ep; + struct usb_gadget_driver *driver; + struct otg_transceiver *transceiver; + u8 dev_addr; + u32 usb_state; + u32 resume_state; + u32 bus_reset; + enum lpm_state lpm_state; + enum ep0_state ep0_state; + u32 ep0_dir; + u16 dciversion; + unsigned ep_max; + unsigned devcap:1, + enabled:1, + region:1, + got_irq:1, + powered:1, + remote_wakeup:1, + rate:1, + is_reset:1, + softconnected:1, + vbus_active:1, + suspended:1, + stopped:1, + lpm:1; /* LPM capability */ + + /* pci state used to access those endpoints */ + struct pci_dev *pdev; + + /* Langwell otg transceiver */ + struct langwell_otg *lotg; + + /* control registers */ + struct langwell_cap_regs __iomem *cap_regs; + struct langwell_op_regs __iomem *op_regs; + + struct usb_ctrlrequest local_setup_buff; + struct langwell_dqh *ep_dqh; + size_t ep_dqh_size; + dma_addr_t ep_dqh_dma; + + /* ep0 status request */ + struct langwell_request *status_req; + + /* dma pool */ + struct dma_pool *dtd_pool; + + /* make sure release() is done */ + struct completion *done; +}; + diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 0ce4e2819847..ed21e263f832 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -139,7 +139,7 @@ static int is_vbus_present(void) { struct pxa2xx_udc_mach_info *mach = the_controller->mach; - if (mach->gpio_vbus) { + if (gpio_is_valid(mach->gpio_vbus)) { int value = gpio_get_value(mach->gpio_vbus); if (mach->gpio_vbus_inverted) @@ -158,7 +158,7 @@ static void pullup_off(void) struct pxa2xx_udc_mach_info *mach = the_controller->mach; int off_level = mach->gpio_pullup_inverted; - if (mach->gpio_pullup) + if (gpio_is_valid(mach->gpio_pullup)) gpio_set_value(mach->gpio_pullup, off_level); else if (mach->udc_command) mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT); @@ -169,7 +169,7 @@ static void pullup_on(void) struct pxa2xx_udc_mach_info *mach = the_controller->mach; int on_level = !mach->gpio_pullup_inverted; - if (mach->gpio_pullup) + if (gpio_is_valid(mach->gpio_pullup)) gpio_set_value(mach->gpio_pullup, on_level); else if (mach->udc_command) mach->udc_command(PXA2XX_UDC_CMD_CONNECT); @@ -1000,7 +1000,7 @@ static int pxa25x_udc_pullup(struct usb_gadget *_gadget, int is_active) udc = container_of(_gadget, struct pxa25x_udc, gadget); /* not all boards support pullup control */ - if (!udc->mach->gpio_pullup && !udc->mach->udc_command) + if (!gpio_is_valid(udc->mach->gpio_pullup) && !udc->mach->udc_command) return -EOPNOTSUPP; udc->pullup = (is_active != 0); @@ -1802,11 +1802,13 @@ pxa25x_udc_irq(int irq, void *_dev) USIR0 |= tmp; handled = 1; } +#ifndef CONFIG_USB_PXA25X_SMALL if (usir1 & tmp) { handle_ep(&dev->ep[i+8]); USIR1 |= tmp; handled = 1; } +#endif } } @@ -2160,7 +2162,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) dev->dev = &pdev->dev; dev->mach = pdev->dev.platform_data; - if (dev->mach->gpio_vbus) { + if (gpio_is_valid(dev->mach->gpio_vbus)) { if ((retval = gpio_request(dev->mach->gpio_vbus, "pxa25x_udc GPIO VBUS"))) { dev_dbg(&pdev->dev, @@ -2173,7 +2175,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) } else vbus_irq = 0; - if (dev->mach->gpio_pullup) { + if (gpio_is_valid(dev->mach->gpio_pullup)) { if ((retval = gpio_request(dev->mach->gpio_pullup, "pca25x_udc GPIO PULLUP"))) { dev_dbg(&pdev->dev, @@ -2256,10 +2258,10 @@ lubbock_fail0: #endif free_irq(irq, dev); err_irq1: - if (dev->mach->gpio_pullup) + if (gpio_is_valid(dev->mach->gpio_pullup)) gpio_free(dev->mach->gpio_pullup); err_gpio_pullup: - if (dev->mach->gpio_vbus) + if (gpio_is_valid(dev->mach->gpio_vbus)) gpio_free(dev->mach->gpio_vbus); err_gpio_vbus: clk_put(dev->clk); @@ -2294,11 +2296,11 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev) free_irq(LUBBOCK_USB_IRQ, dev); } #endif - if (dev->mach->gpio_vbus) { + if (gpio_is_valid(dev->mach->gpio_vbus)) { free_irq(gpio_to_irq(dev->mach->gpio_vbus), dev); gpio_free(dev->mach->gpio_vbus); } - if (dev->mach->gpio_pullup) + if (gpio_is_valid(dev->mach->gpio_pullup)) gpio_free(dev->mach->gpio_pullup); clk_put(dev->clk); @@ -2329,7 +2331,7 @@ static int pxa25x_udc_suspend(struct platform_device *dev, pm_message_t state) struct pxa25x_udc *udc = platform_get_drvdata(dev); unsigned long flags; - if (!udc->mach->gpio_pullup && !udc->mach->udc_command) + if (!gpio_is_valid(udc->mach->gpio_pullup) && !udc->mach->udc_command) WARNING("USB host won't detect disconnect!\n"); udc->suspended = 1; diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 8cc676ecbb23..1937d8c7b433 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -38,7 +38,6 @@ #include <linux/usb.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> -#include <mach/pxa2xx-regs.h> /* FIXME: for PSSR */ #include <mach/udc.h> #include "pxa27x_udc.h" @@ -474,6 +473,23 @@ static inline void udc_clear_mask_UDCCR(struct pxa_udc *udc, int mask) } /** + * ep_write_UDCCSR - set bits in UDCCSR + * @udc: udc device + * @mask: bits to set in UDCCR + * + * Sets bits in UDCCSR (UDCCSR0 and UDCCSR*). + * + * A specific case is applied to ep0 : the ACM bit is always set to 1, for + * SET_INTERFACE and SET_CONFIGURATION. + */ +static inline void ep_write_UDCCSR(struct pxa_ep *ep, int mask) +{ + if (is_ep0(ep)) + mask |= UDCCSR0_ACM; + udc_ep_writel(ep, UDCCSR, mask); +} + +/** * ep_count_bytes_remain - get how many bytes in udc endpoint * @ep: udc endpoint * @@ -861,7 +877,7 @@ static int read_packet(struct pxa_ep *ep, struct pxa27x_request *req) *buf++ = udc_ep_readl(ep, UDCDR); req->req.actual += count; - udc_ep_writel(ep, UDCCSR, UDCCSR_PC); + ep_write_UDCCSR(ep, UDCCSR_PC); return count; } @@ -969,12 +985,12 @@ static int write_fifo(struct pxa_ep *ep, struct pxa27x_request *req) if (udccsr & UDCCSR_PC) { ep_vdbg(ep, "Clearing Transmit Complete, udccsr=%x\n", udccsr); - udc_ep_writel(ep, UDCCSR, UDCCSR_PC); + ep_write_UDCCSR(ep, UDCCSR_PC); } if (udccsr & UDCCSR_TRN) { ep_vdbg(ep, "Clearing Underrun on, udccsr=%x\n", udccsr); - udc_ep_writel(ep, UDCCSR, UDCCSR_TRN); + ep_write_UDCCSR(ep, UDCCSR_TRN); } count = write_packet(ep, req, max); @@ -996,7 +1012,7 @@ static int write_fifo(struct pxa_ep *ep, struct pxa27x_request *req) } if (is_short) - udc_ep_writel(ep, UDCCSR, UDCCSR_SP); + ep_write_UDCCSR(ep, UDCCSR_SP); /* requests complete when all IN data is in the FIFO */ if (is_last) { @@ -1029,7 +1045,7 @@ static int read_ep0_fifo(struct pxa_ep *ep, struct pxa27x_request *req) while (epout_has_pkt(ep)) { count = read_packet(ep, req); - udc_ep_writel(ep, UDCCSR, UDCCSR0_OPC); + ep_write_UDCCSR(ep, UDCCSR0_OPC); inc_ep_stats_bytes(ep, count, !USB_DIR_IN); is_short = (count < ep->fifo_size); @@ -1074,7 +1090,7 @@ static int write_ep0_fifo(struct pxa_ep *ep, struct pxa27x_request *req) /* Sends either a short packet or a 0 length packet */ if (unlikely(is_short)) - udc_ep_writel(ep, UDCCSR, UDCCSR0_IPR); + ep_write_UDCCSR(ep, UDCCSR0_IPR); ep_dbg(ep, "in %d bytes%s%s, %d left, req=%p, udccsr0=0x%03x\n", count, is_short ? "/S" : "", is_last ? "/L" : "", @@ -1277,7 +1293,7 @@ static int pxa_ep_set_halt(struct usb_ep *_ep, int value) /* FST, FEF bits are the same for control and non control endpoints */ rc = 0; - udc_ep_writel(ep, UDCCSR, UDCCSR_FST | UDCCSR_FEF); + ep_write_UDCCSR(ep, UDCCSR_FST | UDCCSR_FEF); if (is_ep0(ep)) set_ep0state(ep->dev, STALL); @@ -1343,7 +1359,7 @@ static void pxa_ep_fifo_flush(struct usb_ep *_ep) udc_ep_readl(ep, UDCDR); } else { /* most IN status is the same, but ISO can't stall */ - udc_ep_writel(ep, UDCCSR, + ep_write_UDCCSR(ep, UDCCSR_PC | UDCCSR_FEF | UDCCSR_TRN | (EPXFERTYPE_is_ISO(ep) ? 0 : UDCCSR_SST)); } @@ -1728,6 +1744,7 @@ static void udc_enable(struct pxa_udc *udc) memset(&udc->stats, 0, sizeof(udc->stats)); udc_set_mask_UDCCR(udc, UDCCR_UDE); + ep_write_UDCCSR(&udc->pxa_ep[0], UDCCSR0_ACM); udelay(2); if (udc_readl(udc, UDCCR) & UDCCR_EMCE) dev_err(udc->dev, "Configuration errors, udc disabled\n"); @@ -1893,6 +1910,15 @@ static void handle_ep0_ctrl_req(struct pxa_udc *udc, nuke(ep, -EPROTO); + /* + * In the PXA320 manual, in the section about Back-to-Back setup + * packets, it describes this situation. The solution is to set OPC to + * get rid of the status packet, and then continue with the setup + * packet. Generalize to pxa27x CPUs. + */ + if (epout_has_pkt(ep) && (ep_count_bytes_remain(ep) == 0)) + ep_write_UDCCSR(ep, UDCCSR0_OPC); + /* read SETUP packet */ for (i = 0; i < 2; i++) { if (unlikely(ep_is_empty(ep))) @@ -1919,7 +1945,7 @@ static void handle_ep0_ctrl_req(struct pxa_udc *udc, set_ep0state(udc, OUT_DATA_STAGE); /* Tell UDC to enter Data Stage */ - udc_ep_writel(ep, UDCCSR, UDCCSR0_SA | UDCCSR0_OPC); + ep_write_UDCCSR(ep, UDCCSR0_SA | UDCCSR0_OPC); i = udc->driver->setup(&udc->gadget, &u.r); if (i < 0) @@ -1929,7 +1955,7 @@ out: stall: ep_dbg(ep, "protocol STALL, udccsr0=%03x err %d\n", udc_ep_readl(ep, UDCCSR), i); - udc_ep_writel(ep, UDCCSR, UDCCSR0_FST | UDCCSR0_FTF); + ep_write_UDCCSR(ep, UDCCSR0_FST | UDCCSR0_FTF); set_ep0state(udc, STALL); goto out; } @@ -1966,6 +1992,8 @@ stall: * cleared by software. * - clearing UDCCSR0_OPC always flushes ep0. If in setup stage, never do it * before reading ep0. + * This is true only for PXA27x. This is not true anymore for PXA3xx family + * (check Back-to-Back setup packet in developers guide). * - irq can be called on a "packet complete" event (opc_irq=1), while * UDCCSR0_OPC is not yet raised (delta can be as big as 100ms * from experimentation). @@ -1998,7 +2026,7 @@ static void handle_ep0(struct pxa_udc *udc, int fifo_irq, int opc_irq) if (udccsr0 & UDCCSR0_SST) { ep_dbg(ep, "clearing stall status\n"); nuke(ep, -EPIPE); - udc_ep_writel(ep, UDCCSR, UDCCSR0_SST); + ep_write_UDCCSR(ep, UDCCSR0_SST); ep0_idle(udc); } @@ -2023,7 +2051,7 @@ static void handle_ep0(struct pxa_udc *udc, int fifo_irq, int opc_irq) break; case IN_DATA_STAGE: /* GET_DESCRIPTOR */ if (epout_has_pkt(ep)) - udc_ep_writel(ep, UDCCSR, UDCCSR0_OPC); + ep_write_UDCCSR(ep, UDCCSR0_OPC); if (req && !ep_is_full(ep)) completed = write_ep0_fifo(ep, req); if (completed) @@ -2036,7 +2064,7 @@ static void handle_ep0(struct pxa_udc *udc, int fifo_irq, int opc_irq) ep0_end_out_req(ep, req); break; case STALL: - udc_ep_writel(ep, UDCCSR, UDCCSR0_FST); + ep_write_UDCCSR(ep, UDCCSR0_FST); break; case IN_STATUS_STAGE: /* @@ -2131,6 +2159,7 @@ static void pxa27x_change_configuration(struct pxa_udc *udc, int config) set_ep0state(udc, WAIT_ACK_SET_CONF_INTERF); udc->driver->setup(&udc->gadget, &req); + ep_write_UDCCSR(&udc->pxa_ep[0], UDCCSR0_AREN); } /** @@ -2159,6 +2188,7 @@ static void pxa27x_change_interface(struct pxa_udc *udc, int iface, int alt) set_ep0state(udc, WAIT_ACK_SET_CONF_INTERF); udc->driver->setup(&udc->gadget, &req); + ep_write_UDCCSR(&udc->pxa_ep[0], UDCCSR0_AREN); } /* @@ -2280,7 +2310,7 @@ static void irq_udc_reset(struct pxa_udc *udc) memset(&udc->stats, 0, sizeof udc->stats); nuke(ep, -EPROTO); - udc_ep_writel(ep, UDCCSR, UDCCSR0_FTF | UDCCSR0_OPC); + ep_write_UDCCSR(ep, UDCCSR0_FTF | UDCCSR0_OPC); ep0_idle(udc); } @@ -2479,6 +2509,12 @@ static void pxa_udc_shutdown(struct platform_device *_dev) udc_disable(udc); } +#ifdef CONFIG_CPU_PXA27x +extern void pxa27x_clear_otgph(void); +#else +#define pxa27x_clear_otgph() do {} while (0) +#endif + #ifdef CONFIG_PM /** * pxa_udc_suspend - Suspend udc device @@ -2546,8 +2582,7 @@ static int pxa_udc_resume(struct platform_device *_dev) * Software must configure the USB OTG pad, UDC, and UHC * to the state they were in before entering sleep mode. */ - if (cpu_is_pxa27x()) - PSSR |= PSSR_OTGPH; + pxa27x_clear_otgph(); return 0; } @@ -2571,7 +2606,7 @@ static struct platform_driver udc_driver = { static int __init udc_init(void) { - if (!cpu_is_pxa27x()) + if (!cpu_is_pxa27x() && !cpu_is_pxa3xx()) return -ENODEV; printk(KERN_INFO "%s: version %s\n", driver_name, DRIVER_VERSION); diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h index db58125331da..e25225e26586 100644 --- a/drivers/usb/gadget/pxa27x_udc.h +++ b/drivers/usb/gadget/pxa27x_udc.h @@ -130,6 +130,8 @@ #define UP2OCR_HXOE (1 << 17) /* Transceiver Output Enable */ #define UP2OCR_SEOS (1 << 24) /* Single-Ended Output Select */ +#define UDCCSR0_ACM (1 << 9) /* Ack Control Mode */ +#define UDCCSR0_AREN (1 << 8) /* Ack Response Enable */ #define UDCCSR0_SA (1 << 7) /* Setup Active */ #define UDCCSR0_RNE (1 << 6) /* Receive FIFO Not Empty */ #define UDCCSR0_FST (1 << 5) /* Force Stall */ diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index 2b4660e08c4d..ca41b0b5afb3 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -442,6 +442,8 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, case OID_802_3_MAC_OPTIONS: pr_debug("%s: OID_802_3_MAC_OPTIONS\n", __func__); + *outbuf = cpu_to_le32(0); + retval = 0; break; /* ieee802.3 statistics OIDs (table 4-4) */ diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c new file mode 100644 index 000000000000..50c71aae2cc2 --- /dev/null +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -0,0 +1,3269 @@ +/* linux/drivers/usb/gadget/s3c-hsotg.c + * + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C USB2.0 High-speed / OtG driver + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/delay.h> +#include <linux/io.h> + +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> + +#include <mach/map.h> + +#include <plat/regs-usb-hsotg-phy.h> +#include <plat/regs-usb-hsotg.h> +#include <plat/regs-sys.h> +#include <plat/udc-hs.h> + +#define DMA_ADDR_INVALID (~((dma_addr_t)0)) + +/* EP0_MPS_LIMIT + * + * Unfortunately there seems to be a limit of the amount of data that can + * be transfered by IN transactions on EP0. This is either 127 bytes or 3 + * packets (which practially means 1 packet and 63 bytes of data) when the + * MPS is set to 64. + * + * This means if we are wanting to move >127 bytes of data, we need to + * split the transactions up, but just doing one packet at a time does + * not work (this may be an implicit DATA0 PID on first packet of the + * transaction) and doing 2 packets is outside the controller's limits. + * + * If we try to lower the MPS size for EP0, then no transfers work properly + * for EP0, and the system will fail basic enumeration. As no cause for this + * has currently been found, we cannot support any large IN transfers for + * EP0. + */ +#define EP0_MPS_LIMIT 64 + +struct s3c_hsotg; +struct s3c_hsotg_req; + +/** + * struct s3c_hsotg_ep - driver endpoint definition. + * @ep: The gadget layer representation of the endpoint. + * @name: The driver generated name for the endpoint. + * @queue: Queue of requests for this endpoint. + * @parent: Reference back to the parent device structure. + * @req: The current request that the endpoint is processing. This is + * used to indicate an request has been loaded onto the endpoint + * and has yet to be completed (maybe due to data move, or simply + * awaiting an ack from the core all the data has been completed). + * @debugfs: File entry for debugfs file for this endpoint. + * @lock: State lock to protect contents of endpoint. + * @dir_in: Set to true if this endpoint is of the IN direction, which + * means that it is sending data to the Host. + * @index: The index for the endpoint registers. + * @name: The name array passed to the USB core. + * @halted: Set if the endpoint has been halted. + * @periodic: Set if this is a periodic ep, such as Interrupt + * @sent_zlp: Set if we've sent a zero-length packet. + * @total_data: The total number of data bytes done. + * @fifo_size: The size of the FIFO (for periodic IN endpoints) + * @fifo_load: The amount of data loaded into the FIFO (periodic IN) + * @last_load: The offset of data for the last start of request. + * @size_loaded: The last loaded size for DxEPTSIZE for periodic IN + * + * This is the driver's state for each registered enpoint, allowing it + * to keep track of transactions that need doing. Each endpoint has a + * lock to protect the state, to try and avoid using an overall lock + * for the host controller as much as possible. + * + * For periodic IN endpoints, we have fifo_size and fifo_load to try + * and keep track of the amount of data in the periodic FIFO for each + * of these as we don't have a status register that tells us how much + * is in each of them. + */ +struct s3c_hsotg_ep { + struct usb_ep ep; + struct list_head queue; + struct s3c_hsotg *parent; + struct s3c_hsotg_req *req; + struct dentry *debugfs; + + spinlock_t lock; + + unsigned long total_data; + unsigned int size_loaded; + unsigned int last_load; + unsigned int fifo_load; + unsigned short fifo_size; + + unsigned char dir_in; + unsigned char index; + + unsigned int halted:1; + unsigned int periodic:1; + unsigned int sent_zlp:1; + + char name[10]; +}; + +#define S3C_HSOTG_EPS (8+1) /* limit to 9 for the moment */ + +/** + * struct s3c_hsotg - driver state. + * @dev: The parent device supplied to the probe function + * @driver: USB gadget driver + * @plat: The platform specific configuration data. + * @regs: The memory area mapped for accessing registers. + * @regs_res: The resource that was allocated when claiming register space. + * @irq: The IRQ number we are using + * @debug_root: root directrory for debugfs. + * @debug_file: main status file for debugfs. + * @debug_fifo: FIFO status file for debugfs. + * @ep0_reply: Request used for ep0 reply. + * @ep0_buff: Buffer for EP0 reply data, if needed. + * @ctrl_buff: Buffer for EP0 control requests. + * @ctrl_req: Request for EP0 control packets. + * @eps: The endpoints being supplied to the gadget framework + */ +struct s3c_hsotg { + struct device *dev; + struct usb_gadget_driver *driver; + struct s3c_hsotg_plat *plat; + + void __iomem *regs; + struct resource *regs_res; + int irq; + + struct dentry *debug_root; + struct dentry *debug_file; + struct dentry *debug_fifo; + + struct usb_request *ep0_reply; + struct usb_request *ctrl_req; + u8 ep0_buff[8]; + u8 ctrl_buff[8]; + + struct usb_gadget gadget; + struct s3c_hsotg_ep eps[]; +}; + +/** + * struct s3c_hsotg_req - data transfer request + * @req: The USB gadget request + * @queue: The list of requests for the endpoint this is queued for. + * @in_progress: Has already had size/packets written to core + * @mapped: DMA buffer for this request has been mapped via dma_map_single(). + */ +struct s3c_hsotg_req { + struct usb_request req; + struct list_head queue; + unsigned char in_progress; + unsigned char mapped; +}; + +/* conversion functions */ +static inline struct s3c_hsotg_req *our_req(struct usb_request *req) +{ + return container_of(req, struct s3c_hsotg_req, req); +} + +static inline struct s3c_hsotg_ep *our_ep(struct usb_ep *ep) +{ + return container_of(ep, struct s3c_hsotg_ep, ep); +} + +static inline struct s3c_hsotg *to_hsotg(struct usb_gadget *gadget) +{ + return container_of(gadget, struct s3c_hsotg, gadget); +} + +static inline void __orr32(void __iomem *ptr, u32 val) +{ + writel(readl(ptr) | val, ptr); +} + +static inline void __bic32(void __iomem *ptr, u32 val) +{ + writel(readl(ptr) & ~val, ptr); +} + +/* forward decleration of functions */ +static void s3c_hsotg_dump(struct s3c_hsotg *hsotg); + +/** + * using_dma - return the DMA status of the driver. + * @hsotg: The driver state. + * + * Return true if we're using DMA. + * + * Currently, we have the DMA support code worked into everywhere + * that needs it, but the AMBA DMA implementation in the hardware can + * only DMA from 32bit aligned addresses. This means that gadgets such + * as the CDC Ethernet cannot work as they often pass packets which are + * not 32bit aligned. + * + * Unfortunately the choice to use DMA or not is global to the controller + * and seems to be only settable when the controller is being put through + * a core reset. This means we either need to fix the gadgets to take + * account of DMA alignment, or add bounce buffers (yuerk). + * + * Until this issue is sorted out, we always return 'false'. + */ +static inline bool using_dma(struct s3c_hsotg *hsotg) +{ + return false; /* support is not complete */ +} + +/** + * s3c_hsotg_en_gsint - enable one or more of the general interrupt + * @hsotg: The device state + * @ints: A bitmask of the interrupts to enable + */ +static void s3c_hsotg_en_gsint(struct s3c_hsotg *hsotg, u32 ints) +{ + u32 gsintmsk = readl(hsotg->regs + S3C_GINTMSK); + u32 new_gsintmsk; + + new_gsintmsk = gsintmsk | ints; + + if (new_gsintmsk != gsintmsk) { + dev_dbg(hsotg->dev, "gsintmsk now 0x%08x\n", new_gsintmsk); + writel(new_gsintmsk, hsotg->regs + S3C_GINTMSK); + } +} + +/** + * s3c_hsotg_disable_gsint - disable one or more of the general interrupt + * @hsotg: The device state + * @ints: A bitmask of the interrupts to enable + */ +static void s3c_hsotg_disable_gsint(struct s3c_hsotg *hsotg, u32 ints) +{ + u32 gsintmsk = readl(hsotg->regs + S3C_GINTMSK); + u32 new_gsintmsk; + + new_gsintmsk = gsintmsk & ~ints; + + if (new_gsintmsk != gsintmsk) + writel(new_gsintmsk, hsotg->regs + S3C_GINTMSK); +} + +/** + * s3c_hsotg_ctrl_epint - enable/disable an endpoint irq + * @hsotg: The device state + * @ep: The endpoint index + * @dir_in: True if direction is in. + * @en: The enable value, true to enable + * + * Set or clear the mask for an individual endpoint's interrupt + * request. + */ +static void s3c_hsotg_ctrl_epint(struct s3c_hsotg *hsotg, + unsigned int ep, unsigned int dir_in, + unsigned int en) +{ + unsigned long flags; + u32 bit = 1 << ep; + u32 daint; + + if (!dir_in) + bit <<= 16; + + local_irq_save(flags); + daint = readl(hsotg->regs + S3C_DAINTMSK); + if (en) + daint |= bit; + else + daint &= ~bit; + writel(daint, hsotg->regs + S3C_DAINTMSK); + local_irq_restore(flags); +} + +/** + * s3c_hsotg_init_fifo - initialise non-periodic FIFOs + * @hsotg: The device instance. + */ +static void s3c_hsotg_init_fifo(struct s3c_hsotg *hsotg) +{ + /* the ryu 2.6.24 release ahs + writel(0x1C0, hsotg->regs + S3C_GRXFSIZ); + writel(S3C_GNPTXFSIZ_NPTxFStAddr(0x200) | + S3C_GNPTXFSIZ_NPTxFDep(0x1C0), + hsotg->regs + S3C_GNPTXFSIZ); + */ + + /* set FIFO sizes to 2048/0x1C0 */ + + writel(2048, hsotg->regs + S3C_GRXFSIZ); + writel(S3C_GNPTXFSIZ_NPTxFStAddr(2048) | + S3C_GNPTXFSIZ_NPTxFDep(0x1C0), + hsotg->regs + S3C_GNPTXFSIZ); +} + +/** + * @ep: USB endpoint to allocate request for. + * @flags: Allocation flags + * + * Allocate a new USB request structure appropriate for the specified endpoint + */ +struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, gfp_t flags) +{ + struct s3c_hsotg_req *req; + + req = kzalloc(sizeof(struct s3c_hsotg_req), flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + req->req.dma = DMA_ADDR_INVALID; + return &req->req; +} + +/** + * is_ep_periodic - return true if the endpoint is in periodic mode. + * @hs_ep: The endpoint to query. + * + * Returns true if the endpoint is in periodic mode, meaning it is being + * used for an Interrupt or ISO transfer. + */ +static inline int is_ep_periodic(struct s3c_hsotg_ep *hs_ep) +{ + return hs_ep->periodic; +} + +/** + * s3c_hsotg_unmap_dma - unmap the DMA memory being used for the request + * @hsotg: The device state. + * @hs_ep: The endpoint for the request + * @hs_req: The request being processed. + * + * This is the reverse of s3c_hsotg_map_dma(), called for the completion + * of a request to ensure the buffer is ready for access by the caller. +*/ +static void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, + struct s3c_hsotg_req *hs_req) +{ + struct usb_request *req = &hs_req->req; + enum dma_data_direction dir; + + dir = hs_ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE; + + /* ignore this if we're not moving any data */ + if (hs_req->req.length == 0) + return; + + if (hs_req->mapped) { + /* we mapped this, so unmap and remove the dma */ + + dma_unmap_single(hsotg->dev, req->dma, req->length, dir); + + req->dma = DMA_ADDR_INVALID; + hs_req->mapped = 0; + } else { + dma_sync_single(hsotg->dev, req->dma, req->length, dir); + } +} + +/** + * s3c_hsotg_write_fifo - write packet Data to the TxFIFO + * @hsotg: The controller state. + * @hs_ep: The endpoint we're going to write for. + * @hs_req: The request to write data for. + * + * This is called when the TxFIFO has some space in it to hold a new + * transmission and we have something to give it. The actual setup of + * the data size is done elsewhere, so all we have to do is to actually + * write the data. + * + * The return value is zero if there is more space (or nothing was done) + * otherwise -ENOSPC is returned if the FIFO space was used up. + * + * This routine is only needed for PIO +*/ +static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, + struct s3c_hsotg_req *hs_req) +{ + bool periodic = is_ep_periodic(hs_ep); + u32 gnptxsts = readl(hsotg->regs + S3C_GNPTXSTS); + int buf_pos = hs_req->req.actual; + int to_write = hs_ep->size_loaded; + void *data; + int can_write; + int pkt_round; + + to_write -= (buf_pos - hs_ep->last_load); + + /* if there's nothing to write, get out early */ + if (to_write == 0) + return 0; + + if (periodic) { + u32 epsize = readl(hsotg->regs + S3C_DIEPTSIZ(hs_ep->index)); + int size_left; + int size_done; + + /* work out how much data was loaded so we can calculate + * how much data is left in the fifo. */ + + size_left = S3C_DxEPTSIZ_XferSize_GET(epsize); + + dev_dbg(hsotg->dev, "%s: left=%d, load=%d, fifo=%d, size %d\n", + __func__, size_left, + hs_ep->size_loaded, hs_ep->fifo_load, hs_ep->fifo_size); + + /* how much of the data has moved */ + size_done = hs_ep->size_loaded - size_left; + + /* how much data is left in the fifo */ + can_write = hs_ep->fifo_load - size_done; + dev_dbg(hsotg->dev, "%s: => can_write1=%d\n", + __func__, can_write); + + can_write = hs_ep->fifo_size - can_write; + dev_dbg(hsotg->dev, "%s: => can_write2=%d\n", + __func__, can_write); + + if (can_write <= 0) { + s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_PTxFEmp); + return -ENOSPC; + } + } else { + if (S3C_GNPTXSTS_NPTxQSpcAvail_GET(gnptxsts) == 0) { + dev_dbg(hsotg->dev, + "%s: no queue slots available (0x%08x)\n", + __func__, gnptxsts); + + s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_NPTxFEmp); + return -ENOSPC; + } + + can_write = S3C_GNPTXSTS_NPTxFSpcAvail_GET(gnptxsts); + } + + dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, mps %d\n", + __func__, gnptxsts, can_write, to_write, hs_ep->ep.maxpacket); + + /* limit to 512 bytes of data, it seems at least on the non-periodic + * FIFO, requests of >512 cause the endpoint to get stuck with a + * fragment of the end of the transfer in it. + */ + if (can_write > 512) + can_write = 512; + + /* see if we can write data */ + + if (to_write > can_write) { + to_write = can_write; + pkt_round = to_write % hs_ep->ep.maxpacket; + + /* Not sure, but we probably shouldn't be writing partial + * packets into the FIFO, so round the write down to an + * exact number of packets. + * + * Note, we do not currently check to see if we can ever + * write a full packet or not to the FIFO. + */ + + if (pkt_round) + to_write -= pkt_round; + + /* enable correct FIFO interrupt to alert us when there + * is more room left. */ + + s3c_hsotg_en_gsint(hsotg, + periodic ? S3C_GINTSTS_PTxFEmp : + S3C_GINTSTS_NPTxFEmp); + } + + dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n", + to_write, hs_req->req.length, can_write, buf_pos); + + if (to_write <= 0) + return -ENOSPC; + + hs_req->req.actual = buf_pos + to_write; + hs_ep->total_data += to_write; + + if (periodic) + hs_ep->fifo_load += to_write; + + to_write = DIV_ROUND_UP(to_write, 4); + data = hs_req->req.buf + buf_pos; + + writesl(hsotg->regs + S3C_EPFIFO(hs_ep->index), data, to_write); + + return (to_write >= can_write) ? -ENOSPC : 0; +} + +/** + * get_ep_limit - get the maximum data legnth for this endpoint + * @hs_ep: The endpoint + * + * Return the maximum data that can be queued in one go on a given endpoint + * so that transfers that are too long can be split. + */ +static unsigned get_ep_limit(struct s3c_hsotg_ep *hs_ep) +{ + int index = hs_ep->index; + unsigned maxsize; + unsigned maxpkt; + + if (index != 0) { + maxsize = S3C_DxEPTSIZ_XferSize_LIMIT + 1; + maxpkt = S3C_DxEPTSIZ_PktCnt_LIMIT + 1; + } else { + if (hs_ep->dir_in) { + /* maxsize = S3C_DIEPTSIZ0_XferSize_LIMIT + 1; */ + maxsize = 64+64+1; + maxpkt = S3C_DIEPTSIZ0_PktCnt_LIMIT + 1; + } else { + maxsize = 0x3f; + maxpkt = 2; + } + } + + /* we made the constant loading easier above by using +1 */ + maxpkt--; + maxsize--; + + /* constrain by packet count if maxpkts*pktsize is greater + * than the length register size. */ + + if ((maxpkt * hs_ep->ep.maxpacket) < maxsize) + maxsize = maxpkt * hs_ep->ep.maxpacket; + + return maxsize; +} + +/** + * s3c_hsotg_start_req - start a USB request from an endpoint's queue + * @hsotg: The controller state. + * @hs_ep: The endpoint to process a request for + * @hs_req: The request to start. + * @continuing: True if we are doing more for the current request. + * + * Start the given request running by setting the endpoint registers + * appropriately, and writing any data to the FIFOs. + */ +static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, + struct s3c_hsotg_req *hs_req, + bool continuing) +{ + struct usb_request *ureq = &hs_req->req; + int index = hs_ep->index; + int dir_in = hs_ep->dir_in; + u32 epctrl_reg; + u32 epsize_reg; + u32 epsize; + u32 ctrl; + unsigned length; + unsigned packets; + unsigned maxreq; + + if (index != 0) { + if (hs_ep->req && !continuing) { + dev_err(hsotg->dev, "%s: active request\n", __func__); + WARN_ON(1); + return; + } else if (hs_ep->req != hs_req && continuing) { + dev_err(hsotg->dev, + "%s: continue different req\n", __func__); + WARN_ON(1); + return; + } + } + + epctrl_reg = dir_in ? S3C_DIEPCTL(index) : S3C_DOEPCTL(index); + epsize_reg = dir_in ? S3C_DIEPTSIZ(index) : S3C_DOEPTSIZ(index); + + dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x, ep %d, dir %s\n", + __func__, readl(hsotg->regs + epctrl_reg), index, + hs_ep->dir_in ? "in" : "out"); + + length = ureq->length - ureq->actual; + + if (0) + dev_dbg(hsotg->dev, + "REQ buf %p len %d dma 0x%08x noi=%d zp=%d snok=%d\n", + ureq->buf, length, ureq->dma, + ureq->no_interrupt, ureq->zero, ureq->short_not_ok); + + maxreq = get_ep_limit(hs_ep); + if (length > maxreq) { + int round = maxreq % hs_ep->ep.maxpacket; + + dev_dbg(hsotg->dev, "%s: length %d, max-req %d, r %d\n", + __func__, length, maxreq, round); + + /* round down to multiple of packets */ + if (round) + maxreq -= round; + + length = maxreq; + } + + if (length) + packets = DIV_ROUND_UP(length, hs_ep->ep.maxpacket); + else + packets = 1; /* send one packet if length is zero. */ + + if (dir_in && index != 0) + epsize = S3C_DxEPTSIZ_MC(1); + else + epsize = 0; + + if (index != 0 && ureq->zero) { + /* test for the packets being exactly right for the + * transfer */ + + if (length == (packets * hs_ep->ep.maxpacket)) + packets++; + } + + epsize |= S3C_DxEPTSIZ_PktCnt(packets); + epsize |= S3C_DxEPTSIZ_XferSize(length); + + dev_dbg(hsotg->dev, "%s: %d@%d/%d, 0x%08x => 0x%08x\n", + __func__, packets, length, ureq->length, epsize, epsize_reg); + + /* store the request as the current one we're doing */ + hs_ep->req = hs_req; + + /* write size / packets */ + writel(epsize, hsotg->regs + epsize_reg); + + ctrl = readl(hsotg->regs + epctrl_reg); + + if (ctrl & S3C_DxEPCTL_Stall) { + dev_warn(hsotg->dev, "%s: ep%d is stalled\n", __func__, index); + + /* not sure what we can do here, if it is EP0 then we should + * get this cleared once the endpoint has transmitted the + * STALL packet, otherwise it needs to be cleared by the + * host. + */ + } + + if (using_dma(hsotg)) { + unsigned int dma_reg; + + /* write DMA address to control register, buffer already + * synced by s3c_hsotg_ep_queue(). */ + + dma_reg = dir_in ? S3C_DIEPDMA(index) : S3C_DOEPDMA(index); + writel(ureq->dma, hsotg->regs + dma_reg); + + dev_dbg(hsotg->dev, "%s: 0x%08x => 0x%08x\n", + __func__, ureq->dma, dma_reg); + } + + ctrl |= S3C_DxEPCTL_EPEna; /* ensure ep enabled */ + ctrl |= S3C_DxEPCTL_USBActEp; + ctrl |= S3C_DxEPCTL_CNAK; /* clear NAK set by core */ + + dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); + writel(ctrl, hsotg->regs + epctrl_reg); + + /* set these, it seems that DMA support increments past the end + * of the packet buffer so we need to calculate the length from + * this information. */ + hs_ep->size_loaded = length; + hs_ep->last_load = ureq->actual; + + if (dir_in && !using_dma(hsotg)) { + /* set these anyway, we may need them for non-periodic in */ + hs_ep->fifo_load = 0; + + s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); + } + + /* clear the INTknTXFEmpMsk when we start request, more as a aide + * to debugging to see what is going on. */ + if (dir_in) + writel(S3C_DIEPMSK_INTknTXFEmpMsk, + hsotg->regs + S3C_DIEPINT(index)); + + /* Note, trying to clear the NAK here causes problems with transmit + * on the S3C6400 ending up with the TXFIFO becomming full. */ + + /* check ep is enabled */ + if (!(readl(hsotg->regs + epctrl_reg) & S3C_DxEPCTL_EPEna)) + dev_warn(hsotg->dev, + "ep%d: failed to become enabled (DxEPCTL=0x%08x)?\n", + index, readl(hsotg->regs + epctrl_reg)); + + dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", + __func__, readl(hsotg->regs + epctrl_reg)); +} + +/** + * s3c_hsotg_map_dma - map the DMA memory being used for the request + * @hsotg: The device state. + * @hs_ep: The endpoint the request is on. + * @req: The request being processed. + * + * We've been asked to queue a request, so ensure that the memory buffer + * is correctly setup for DMA. If we've been passed an extant DMA address + * then ensure the buffer has been synced to memory. If our buffer has no + * DMA memory, then we map the memory and mark our request to allow us to + * cleanup on completion. +*/ +static int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, + struct usb_request *req) +{ + enum dma_data_direction dir; + struct s3c_hsotg_req *hs_req = our_req(req); + + dir = hs_ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE; + + /* if the length is zero, ignore the DMA data */ + if (hs_req->req.length == 0) + return 0; + + if (req->dma == DMA_ADDR_INVALID) { + dma_addr_t dma; + + dma = dma_map_single(hsotg->dev, req->buf, req->length, dir); + + if (unlikely(dma_mapping_error(hsotg->dev, dma))) + goto dma_error; + + if (dma & 3) { + dev_err(hsotg->dev, "%s: unaligned dma buffer\n", + __func__); + + dma_unmap_single(hsotg->dev, dma, req->length, dir); + return -EINVAL; + } + + hs_req->mapped = 1; + req->dma = dma; + } else { + dma_sync_single(hsotg->dev, req->dma, req->length, dir); + hs_req->mapped = 0; + } + + return 0; + +dma_error: + dev_err(hsotg->dev, "%s: failed to map buffer %p, %d bytes\n", + __func__, req->buf, req->length); + + return -EIO; +} + +static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, + gfp_t gfp_flags) +{ + struct s3c_hsotg_req *hs_req = our_req(req); + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hs = hs_ep->parent; + unsigned long irqflags; + bool first; + + dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", + ep->name, req, req->length, req->buf, req->no_interrupt, + req->zero, req->short_not_ok); + + /* initialise status of the request */ + INIT_LIST_HEAD(&hs_req->queue); + req->actual = 0; + req->status = -EINPROGRESS; + + /* if we're using DMA, sync the buffers as necessary */ + if (using_dma(hs)) { + int ret = s3c_hsotg_map_dma(hs, hs_ep, req); + if (ret) + return ret; + } + + spin_lock_irqsave(&hs_ep->lock, irqflags); + + first = list_empty(&hs_ep->queue); + list_add_tail(&hs_req->queue, &hs_ep->queue); + + if (first) + s3c_hsotg_start_req(hs, hs_ep, hs_req, false); + + spin_unlock_irqrestore(&hs_ep->lock, irqflags); + + return 0; +} + +static void s3c_hsotg_ep_free_request(struct usb_ep *ep, + struct usb_request *req) +{ + struct s3c_hsotg_req *hs_req = our_req(req); + + kfree(hs_req); +} + +/** + * s3c_hsotg_complete_oursetup - setup completion callback + * @ep: The endpoint the request was on. + * @req: The request completed. + * + * Called on completion of any requests the driver itself + * submitted that need cleaning up. + */ +static void s3c_hsotg_complete_oursetup(struct usb_ep *ep, + struct usb_request *req) +{ + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hsotg = hs_ep->parent; + + dev_dbg(hsotg->dev, "%s: ep %p, req %p\n", __func__, ep, req); + + s3c_hsotg_ep_free_request(ep, req); +} + +/** + * ep_from_windex - convert control wIndex value to endpoint + * @hsotg: The driver state. + * @windex: The control request wIndex field (in host order). + * + * Convert the given wIndex into a pointer to an driver endpoint + * structure, or return NULL if it is not a valid endpoint. +*/ +static struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg, + u32 windex) +{ + struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F]; + int dir = (windex & USB_DIR_IN) ? 1 : 0; + int idx = windex & 0x7F; + + if (windex >= 0x100) + return NULL; + + if (idx > S3C_HSOTG_EPS) + return NULL; + + if (idx && ep->dir_in != dir) + return NULL; + + return ep; +} + +/** + * s3c_hsotg_send_reply - send reply to control request + * @hsotg: The device state + * @ep: Endpoint 0 + * @buff: Buffer for request + * @length: Length of reply. + * + * Create a request and queue it on the given endpoint. This is useful as + * an internal method of sending replies to certain control requests, etc. + */ +static int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *ep, + void *buff, + int length) +{ + struct usb_request *req; + int ret; + + dev_dbg(hsotg->dev, "%s: buff %p, len %d\n", __func__, buff, length); + + req = s3c_hsotg_ep_alloc_request(&ep->ep, GFP_ATOMIC); + hsotg->ep0_reply = req; + if (!req) { + dev_warn(hsotg->dev, "%s: cannot alloc req\n", __func__); + return -ENOMEM; + } + + req->buf = hsotg->ep0_buff; + req->length = length; + req->zero = 1; /* always do zero-length final transfer */ + req->complete = s3c_hsotg_complete_oursetup; + + if (length) + memcpy(req->buf, buff, length); + else + ep->sent_zlp = 1; + + ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC); + if (ret) { + dev_warn(hsotg->dev, "%s: cannot queue req\n", __func__); + return ret; + } + + return 0; +} + +/** + * s3c_hsotg_process_req_status - process request GET_STATUS + * @hsotg: The device state + * @ctrl: USB control request + */ +static int s3c_hsotg_process_req_status(struct s3c_hsotg *hsotg, + struct usb_ctrlrequest *ctrl) +{ + struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; + struct s3c_hsotg_ep *ep; + __le16 reply; + int ret; + + dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__); + + if (!ep0->dir_in) { + dev_warn(hsotg->dev, "%s: direction out?\n", __func__); + return -EINVAL; + } + + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + reply = cpu_to_le16(0); /* bit 0 => self powered, + * bit 1 => remote wakeup */ + break; + + case USB_RECIP_INTERFACE: + /* currently, the data result should be zero */ + reply = cpu_to_le16(0); + break; + + case USB_RECIP_ENDPOINT: + ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); + if (!ep) + return -ENOENT; + + reply = cpu_to_le16(ep->halted ? 1 : 0); + break; + + default: + return 0; + } + + if (le16_to_cpu(ctrl->wLength) != 2) + return -EINVAL; + + ret = s3c_hsotg_send_reply(hsotg, ep0, &reply, 2); + if (ret) { + dev_err(hsotg->dev, "%s: failed to send reply\n", __func__); + return ret; + } + + return 1; +} + +static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value); + +/** + * s3c_hsotg_process_req_featire - process request {SET,CLEAR}_FEATURE + * @hsotg: The device state + * @ctrl: USB control request + */ +static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg, + struct usb_ctrlrequest *ctrl) +{ + bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE); + struct s3c_hsotg_ep *ep; + + dev_dbg(hsotg->dev, "%s: %s_FEATURE\n", + __func__, set ? "SET" : "CLEAR"); + + if (ctrl->bRequestType == USB_RECIP_ENDPOINT) { + ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); + if (!ep) { + dev_dbg(hsotg->dev, "%s: no endpoint for 0x%04x\n", + __func__, le16_to_cpu(ctrl->wIndex)); + return -ENOENT; + } + + switch (le16_to_cpu(ctrl->wValue)) { + case USB_ENDPOINT_HALT: + s3c_hsotg_ep_sethalt(&ep->ep, set); + break; + + default: + return -ENOENT; + } + } else + return -ENOENT; /* currently only deal with endpoint */ + + return 1; +} + +/** + * s3c_hsotg_process_control - process a control request + * @hsotg: The device state + * @ctrl: The control request received + * + * The controller has received the SETUP phase of a control request, and + * needs to work out what to do next (and whether to pass it on to the + * gadget driver). + */ +static void s3c_hsotg_process_control(struct s3c_hsotg *hsotg, + struct usb_ctrlrequest *ctrl) +{ + struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; + int ret = 0; + u32 dcfg; + + ep0->sent_zlp = 0; + + dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n", + ctrl->bRequest, ctrl->bRequestType, + ctrl->wValue, ctrl->wLength); + + /* record the direction of the request, for later use when enquing + * packets onto EP0. */ + + ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0; + dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in); + + /* if we've no data with this request, then the last part of the + * transaction is going to implicitly be IN. */ + if (ctrl->wLength == 0) + ep0->dir_in = 1; + + if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (ctrl->bRequest) { + case USB_REQ_SET_ADDRESS: + dcfg = readl(hsotg->regs + S3C_DCFG); + dcfg &= ~S3C_DCFG_DevAddr_MASK; + dcfg |= ctrl->wValue << S3C_DCFG_DevAddr_SHIFT; + writel(dcfg, hsotg->regs + S3C_DCFG); + + dev_info(hsotg->dev, "new address %d\n", ctrl->wValue); + + ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); + return; + + case USB_REQ_GET_STATUS: + ret = s3c_hsotg_process_req_status(hsotg, ctrl); + break; + + case USB_REQ_CLEAR_FEATURE: + case USB_REQ_SET_FEATURE: + ret = s3c_hsotg_process_req_feature(hsotg, ctrl); + break; + } + } + + /* as a fallback, try delivering it to the driver to deal with */ + + if (ret == 0 && hsotg->driver) { + ret = hsotg->driver->setup(&hsotg->gadget, ctrl); + if (ret < 0) + dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret); + } + + if (ret > 0) { + if (!ep0->dir_in) { + /* need to generate zlp in reply or take data */ + /* todo - deal with any data we might be sent? */ + ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); + } + } + + /* the request is either unhandlable, or is not formatted correctly + * so respond with a STALL for the status stage to indicate failure. + */ + + if (ret < 0) { + u32 reg; + u32 ctrl; + + dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in); + reg = (ep0->dir_in) ? S3C_DIEPCTL0 : S3C_DOEPCTL0; + + /* S3C_DxEPCTL_Stall will be cleared by EP once it has + * taken effect, so no need to clear later. */ + + ctrl = readl(hsotg->regs + reg); + ctrl |= S3C_DxEPCTL_Stall; + ctrl |= S3C_DxEPCTL_CNAK; + writel(ctrl, hsotg->regs + reg); + + dev_dbg(hsotg->dev, + "writen DxEPCTL=0x%08x to %08x (DxEPCTL=0x%08x)\n", + ctrl, reg, readl(hsotg->regs + reg)); + + /* don't belive we need to anything more to get the EP + * to reply with a STALL packet */ + } +} + +static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg); + +/** + * s3c_hsotg_complete_setup - completion of a setup transfer + * @ep: The endpoint the request was on. + * @req: The request completed. + * + * Called on completion of any requests the driver itself submitted for + * EP0 setup packets + */ +static void s3c_hsotg_complete_setup(struct usb_ep *ep, + struct usb_request *req) +{ + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hsotg = hs_ep->parent; + + if (req->status < 0) { + dev_dbg(hsotg->dev, "%s: failed %d\n", __func__, req->status); + return; + } + + if (req->actual == 0) + s3c_hsotg_enqueue_setup(hsotg); + else + s3c_hsotg_process_control(hsotg, req->buf); +} + +/** + * s3c_hsotg_enqueue_setup - start a request for EP0 packets + * @hsotg: The device state. + * + * Enqueue a request on EP0 if necessary to received any SETUP packets + * received from the host. + */ +static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg) +{ + struct usb_request *req = hsotg->ctrl_req; + struct s3c_hsotg_req *hs_req = our_req(req); + int ret; + + dev_dbg(hsotg->dev, "%s: queueing setup request\n", __func__); + + req->zero = 0; + req->length = 8; + req->buf = hsotg->ctrl_buff; + req->complete = s3c_hsotg_complete_setup; + + if (!list_empty(&hs_req->queue)) { + dev_dbg(hsotg->dev, "%s already queued???\n", __func__); + return; + } + + hsotg->eps[0].dir_in = 0; + + ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC); + if (ret < 0) { + dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret); + /* Don't think there's much we can do other than watch the + * driver fail. */ + } +} + +/** + * get_ep_head - return the first request on the endpoint + * @hs_ep: The controller endpoint to get + * + * Get the first request on the endpoint. +*/ +static struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep) +{ + if (list_empty(&hs_ep->queue)) + return NULL; + + return list_first_entry(&hs_ep->queue, struct s3c_hsotg_req, queue); +} + +/** + * s3c_hsotg_complete_request - complete a request given to us + * @hsotg: The device state. + * @hs_ep: The endpoint the request was on. + * @hs_req: The request to complete. + * @result: The result code (0 => Ok, otherwise errno) + * + * The given request has finished, so call the necessary completion + * if it has one and then look to see if we can start a new request + * on the endpoint. + * + * Note, expects the ep to already be locked as appropriate. +*/ +static void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, + struct s3c_hsotg_req *hs_req, + int result) +{ + bool restart; + + if (!hs_req) { + dev_dbg(hsotg->dev, "%s: nothing to complete?\n", __func__); + return; + } + + dev_dbg(hsotg->dev, "complete: ep %p %s, req %p, %d => %p\n", + hs_ep, hs_ep->ep.name, hs_req, result, hs_req->req.complete); + + /* only replace the status if we've not already set an error + * from a previous transaction */ + + if (hs_req->req.status == -EINPROGRESS) + hs_req->req.status = result; + + hs_ep->req = NULL; + list_del_init(&hs_req->queue); + + if (using_dma(hsotg)) + s3c_hsotg_unmap_dma(hsotg, hs_ep, hs_req); + + /* call the complete request with the locks off, just in case the + * request tries to queue more work for this endpoint. */ + + if (hs_req->req.complete) { + spin_unlock(&hs_ep->lock); + hs_req->req.complete(&hs_ep->ep, &hs_req->req); + spin_lock(&hs_ep->lock); + } + + /* Look to see if there is anything else to do. Note, the completion + * of the previous request may have caused a new request to be started + * so be careful when doing this. */ + + if (!hs_ep->req && result >= 0) { + restart = !list_empty(&hs_ep->queue); + if (restart) { + hs_req = get_ep_head(hs_ep); + s3c_hsotg_start_req(hsotg, hs_ep, hs_req, false); + } + } +} + +/** + * s3c_hsotg_complete_request_lock - complete a request given to us (locked) + * @hsotg: The device state. + * @hs_ep: The endpoint the request was on. + * @hs_req: The request to complete. + * @result: The result code (0 => Ok, otherwise errno) + * + * See s3c_hsotg_complete_request(), but called with the endpoint's + * lock held. +*/ +static void s3c_hsotg_complete_request_lock(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, + struct s3c_hsotg_req *hs_req, + int result) +{ + unsigned long flags; + + spin_lock_irqsave(&hs_ep->lock, flags); + s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); + spin_unlock_irqrestore(&hs_ep->lock, flags); +} + +/** + * s3c_hsotg_rx_data - receive data from the FIFO for an endpoint + * @hsotg: The device state. + * @ep_idx: The endpoint index for the data + * @size: The size of data in the fifo, in bytes + * + * The FIFO status shows there is data to read from the FIFO for a given + * endpoint, so sort out whether we need to read the data into a request + * that has been made for that endpoint. + */ +static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) +{ + struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx]; + struct s3c_hsotg_req *hs_req = hs_ep->req; + void __iomem *fifo = hsotg->regs + S3C_EPFIFO(ep_idx); + int to_read; + int max_req; + int read_ptr; + + if (!hs_req) { + u32 epctl = readl(hsotg->regs + S3C_DOEPCTL(ep_idx)); + int ptr; + + dev_warn(hsotg->dev, + "%s: FIFO %d bytes on ep%d but no req (DxEPCTl=0x%08x)\n", + __func__, size, ep_idx, epctl); + + /* dump the data from the FIFO, we've nothing we can do */ + for (ptr = 0; ptr < size; ptr += 4) + (void)readl(fifo); + + return; + } + + spin_lock(&hs_ep->lock); + + to_read = size; + read_ptr = hs_req->req.actual; + max_req = hs_req->req.length - read_ptr; + + if (to_read > max_req) { + /* more data appeared than we where willing + * to deal with in this request. + */ + + /* currently we don't deal this */ + WARN_ON_ONCE(1); + } + + dev_dbg(hsotg->dev, "%s: read %d/%d, done %d/%d\n", + __func__, to_read, max_req, read_ptr, hs_req->req.length); + + hs_ep->total_data += to_read; + hs_req->req.actual += to_read; + to_read = DIV_ROUND_UP(to_read, 4); + + /* note, we might over-write the buffer end by 3 bytes depending on + * alignment of the data. */ + readsl(fifo, hs_req->req.buf + read_ptr, to_read); + + spin_unlock(&hs_ep->lock); +} + +/** + * s3c_hsotg_send_zlp - send zero-length packet on control endpoint + * @hsotg: The device instance + * @req: The request currently on this endpoint + * + * Generate a zero-length IN packet request for terminating a SETUP + * transaction. + * + * Note, since we don't write any data to the TxFIFO, then it is + * currently belived that we do not need to wait for any space in + * the TxFIFO. + */ +static void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg, + struct s3c_hsotg_req *req) +{ + u32 ctrl; + + if (!req) { + dev_warn(hsotg->dev, "%s: no request?\n", __func__); + return; + } + + if (req->req.length == 0) { + hsotg->eps[0].sent_zlp = 1; + s3c_hsotg_enqueue_setup(hsotg); + return; + } + + hsotg->eps[0].dir_in = 1; + hsotg->eps[0].sent_zlp = 1; + + dev_dbg(hsotg->dev, "sending zero-length packet\n"); + + /* issue a zero-sized packet to terminate this */ + writel(S3C_DxEPTSIZ_MC(1) | S3C_DxEPTSIZ_PktCnt(1) | + S3C_DxEPTSIZ_XferSize(0), hsotg->regs + S3C_DIEPTSIZ(0)); + + ctrl = readl(hsotg->regs + S3C_DIEPCTL0); + ctrl |= S3C_DxEPCTL_CNAK; /* clear NAK set by core */ + ctrl |= S3C_DxEPCTL_EPEna; /* ensure ep enabled */ + ctrl |= S3C_DxEPCTL_USBActEp; + writel(ctrl, hsotg->regs + S3C_DIEPCTL0); +} + +/** + * s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO + * @hsotg: The device instance + * @epnum: The endpoint received from + * @was_setup: Set if processing a SetupDone event. + * + * The RXFIFO has delivered an OutDone event, which means that the data + * transfer for an OUT endpoint has been completed, either by a short + * packet or by the finish of a transfer. +*/ +static void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, + int epnum, bool was_setup) +{ + struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; + struct s3c_hsotg_req *hs_req = hs_ep->req; + struct usb_request *req = &hs_req->req; + int result = 0; + + if (!hs_req) { + dev_dbg(hsotg->dev, "%s: no request active\n", __func__); + return; + } + + if (using_dma(hsotg)) { + u32 epsize = readl(hsotg->regs + S3C_DOEPTSIZ(epnum)); + unsigned size_done; + unsigned size_left; + + /* Calculate the size of the transfer by checking how much + * is left in the endpoint size register and then working it + * out from the amount we loaded for the transfer. + * + * We need to do this as DMA pointers are always 32bit aligned + * so may overshoot/undershoot the transfer. + */ + + size_left = S3C_DxEPTSIZ_XferSize_GET(epsize); + + size_done = hs_ep->size_loaded - size_left; + size_done += hs_ep->last_load; + + req->actual = size_done; + } + + if (req->actual < req->length && req->short_not_ok) { + dev_dbg(hsotg->dev, "%s: got %d/%d (short not ok) => error\n", + __func__, req->actual, req->length); + + /* todo - what should we return here? there's no one else + * even bothering to check the status. */ + } + + if (epnum == 0) { + if (!was_setup && req->complete != s3c_hsotg_complete_setup) + s3c_hsotg_send_zlp(hsotg, hs_req); + } + + s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, result); +} + +/** + * s3c_hsotg_read_frameno - read current frame number + * @hsotg: The device instance + * + * Return the current frame number +*/ +static u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg) +{ + u32 dsts; + + dsts = readl(hsotg->regs + S3C_DSTS); + dsts &= S3C_DSTS_SOFFN_MASK; + dsts >>= S3C_DSTS_SOFFN_SHIFT; + + return dsts; +} + +/** + * s3c_hsotg_handle_rx - RX FIFO has data + * @hsotg: The device instance + * + * The IRQ handler has detected that the RX FIFO has some data in it + * that requires processing, so find out what is in there and do the + * appropriate read. + * + * The RXFIFO is a true FIFO, the packets comming out are still in packet + * chunks, so if you have x packets received on an endpoint you'll get x + * FIFO events delivered, each with a packet's worth of data in it. + * + * When using DMA, we should not be processing events from the RXFIFO + * as the actual data should be sent to the memory directly and we turn + * on the completion interrupts to get notifications of transfer completion. + */ +void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg) +{ + u32 grxstsr = readl(hsotg->regs + S3C_GRXSTSP); + u32 epnum, status, size; + + WARN_ON(using_dma(hsotg)); + + epnum = grxstsr & S3C_GRXSTS_EPNum_MASK; + status = grxstsr & S3C_GRXSTS_PktSts_MASK; + + size = grxstsr & S3C_GRXSTS_ByteCnt_MASK; + size >>= S3C_GRXSTS_ByteCnt_SHIFT; + + if (1) + dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", + __func__, grxstsr, size, epnum); + +#define __status(x) ((x) >> S3C_GRXSTS_PktSts_SHIFT) + + switch (status >> S3C_GRXSTS_PktSts_SHIFT) { + case __status(S3C_GRXSTS_PktSts_GlobalOutNAK): + dev_dbg(hsotg->dev, "GlobalOutNAK\n"); + break; + + case __status(S3C_GRXSTS_PktSts_OutDone): + dev_dbg(hsotg->dev, "OutDone (Frame=0x%08x)\n", + s3c_hsotg_read_frameno(hsotg)); + + if (!using_dma(hsotg)) + s3c_hsotg_handle_outdone(hsotg, epnum, false); + break; + + case __status(S3C_GRXSTS_PktSts_SetupDone): + dev_dbg(hsotg->dev, + "SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n", + s3c_hsotg_read_frameno(hsotg), + readl(hsotg->regs + S3C_DOEPCTL(0))); + + s3c_hsotg_handle_outdone(hsotg, epnum, true); + break; + + case __status(S3C_GRXSTS_PktSts_OutRX): + s3c_hsotg_rx_data(hsotg, epnum, size); + break; + + case __status(S3C_GRXSTS_PktSts_SetupRX): + dev_dbg(hsotg->dev, + "SetupRX (Frame=0x%08x, DOPEPCTL=0x%08x)\n", + s3c_hsotg_read_frameno(hsotg), + readl(hsotg->regs + S3C_DOEPCTL(0))); + + s3c_hsotg_rx_data(hsotg, epnum, size); + break; + + default: + dev_warn(hsotg->dev, "%s: unknown status %08x\n", + __func__, grxstsr); + + s3c_hsotg_dump(hsotg); + break; + } +} + +/** + * s3c_hsotg_ep0_mps - turn max packet size into register setting + * @mps: The maximum packet size in bytes. +*/ +static u32 s3c_hsotg_ep0_mps(unsigned int mps) +{ + switch (mps) { + case 64: + return S3C_D0EPCTL_MPS_64; + case 32: + return S3C_D0EPCTL_MPS_32; + case 16: + return S3C_D0EPCTL_MPS_16; + case 8: + return S3C_D0EPCTL_MPS_8; + } + + /* bad max packet size, warn and return invalid result */ + WARN_ON(1); + return (u32)-1; +} + +/** + * s3c_hsotg_set_ep_maxpacket - set endpoint's max-packet field + * @hsotg: The driver state. + * @ep: The index number of the endpoint + * @mps: The maximum packet size in bytes + * + * Configure the maximum packet size for the given endpoint, updating + * the hardware control registers to reflect this. + */ +static void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg, + unsigned int ep, unsigned int mps) +{ + struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep]; + void __iomem *regs = hsotg->regs; + u32 mpsval; + u32 reg; + + if (ep == 0) { + /* EP0 is a special case */ + mpsval = s3c_hsotg_ep0_mps(mps); + if (mpsval > 3) + goto bad_mps; + } else { + if (mps >= S3C_DxEPCTL_MPS_LIMIT+1) + goto bad_mps; + + mpsval = mps; + } + + hs_ep->ep.maxpacket = mps; + + /* update both the in and out endpoint controldir_ registers, even + * if one of the directions may not be in use. */ + + reg = readl(regs + S3C_DIEPCTL(ep)); + reg &= ~S3C_DxEPCTL_MPS_MASK; + reg |= mpsval; + writel(reg, regs + S3C_DIEPCTL(ep)); + + reg = readl(regs + S3C_DOEPCTL(ep)); + reg &= ~S3C_DxEPCTL_MPS_MASK; + reg |= mpsval; + writel(reg, regs + S3C_DOEPCTL(ep)); + + return; + +bad_mps: + dev_err(hsotg->dev, "ep%d: bad mps of %d\n", ep, mps); +} + + +/** + * s3c_hsotg_trytx - check to see if anything needs transmitting + * @hsotg: The driver state + * @hs_ep: The driver endpoint to check. + * + * Check to see if there is a request that has data to send, and if so + * make an attempt to write data into the FIFO. + */ +static int s3c_hsotg_trytx(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep) +{ + struct s3c_hsotg_req *hs_req = hs_ep->req; + + if (!hs_ep->dir_in || !hs_req) + return 0; + + if (hs_req->req.actual < hs_req->req.length) { + dev_dbg(hsotg->dev, "trying to write more for ep%d\n", + hs_ep->index); + return s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); + } + + return 0; +} + +/** + * s3c_hsotg_complete_in - complete IN transfer + * @hsotg: The device state. + * @hs_ep: The endpoint that has just completed. + * + * An IN transfer has been completed, update the transfer's state and then + * call the relevant completion routines. + */ +static void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep) +{ + struct s3c_hsotg_req *hs_req = hs_ep->req; + u32 epsize = readl(hsotg->regs + S3C_DIEPTSIZ(hs_ep->index)); + int size_left, size_done; + + if (!hs_req) { + dev_dbg(hsotg->dev, "XferCompl but no req\n"); + return; + } + + /* Calculate the size of the transfer by checking how much is left + * in the endpoint size register and then working it out from + * the amount we loaded for the transfer. + * + * We do this even for DMA, as the transfer may have incremented + * past the end of the buffer (DMA transfers are always 32bit + * aligned). + */ + + size_left = S3C_DxEPTSIZ_XferSize_GET(epsize); + + size_done = hs_ep->size_loaded - size_left; + size_done += hs_ep->last_load; + + if (hs_req->req.actual != size_done) + dev_dbg(hsotg->dev, "%s: adjusting size done %d => %d\n", + __func__, hs_req->req.actual, size_done); + + hs_req->req.actual = size_done; + + /* if we did all of the transfer, and there is more data left + * around, then try restarting the rest of the request */ + + if (!size_left && hs_req->req.actual < hs_req->req.length) { + dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); + s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); + } else + s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, 0); +} + +/** + * s3c_hsotg_epint - handle an in/out endpoint interrupt + * @hsotg: The driver state + * @idx: The index for the endpoint (0..15) + * @dir_in: Set if this is an IN endpoint + * + * Process and clear any interrupt pending for an individual endpoint +*/ +static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, + int dir_in) +{ + struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx]; + u32 epint_reg = dir_in ? S3C_DIEPINT(idx) : S3C_DOEPINT(idx); + u32 epctl_reg = dir_in ? S3C_DIEPCTL(idx) : S3C_DOEPCTL(idx); + u32 epsiz_reg = dir_in ? S3C_DIEPTSIZ(idx) : S3C_DOEPTSIZ(idx); + u32 ints; + u32 clear = 0; + + ints = readl(hsotg->regs + epint_reg); + + dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n", + __func__, idx, dir_in ? "in" : "out", ints); + + if (ints & S3C_DxEPINT_XferCompl) { + dev_dbg(hsotg->dev, + "%s: XferCompl: DxEPCTL=0x%08x, DxEPTSIZ=%08x\n", + __func__, readl(hsotg->regs + epctl_reg), + readl(hsotg->regs + epsiz_reg)); + + /* we get OutDone from the FIFO, so we only need to look + * at completing IN requests here */ + if (dir_in) { + s3c_hsotg_complete_in(hsotg, hs_ep); + + if (idx == 0) + s3c_hsotg_enqueue_setup(hsotg); + } else if (using_dma(hsotg)) { + /* We're using DMA, we need to fire an OutDone here + * as we ignore the RXFIFO. */ + + s3c_hsotg_handle_outdone(hsotg, idx, false); + } + + clear |= S3C_DxEPINT_XferCompl; + } + + if (ints & S3C_DxEPINT_EPDisbld) { + dev_dbg(hsotg->dev, "%s: EPDisbld\n", __func__); + clear |= S3C_DxEPINT_EPDisbld; + } + + if (ints & S3C_DxEPINT_AHBErr) { + dev_dbg(hsotg->dev, "%s: AHBErr\n", __func__); + clear |= S3C_DxEPINT_AHBErr; + } + + if (ints & S3C_DxEPINT_Setup) { /* Setup or Timeout */ + dev_dbg(hsotg->dev, "%s: Setup/Timeout\n", __func__); + + if (using_dma(hsotg) && idx == 0) { + /* this is the notification we've received a + * setup packet. In non-DMA mode we'd get this + * from the RXFIFO, instead we need to process + * the setup here. */ + + if (dir_in) + WARN_ON_ONCE(1); + else + s3c_hsotg_handle_outdone(hsotg, 0, true); + } + + clear |= S3C_DxEPINT_Setup; + } + + if (ints & S3C_DxEPINT_Back2BackSetup) { + dev_dbg(hsotg->dev, "%s: B2BSetup/INEPNakEff\n", __func__); + clear |= S3C_DxEPINT_Back2BackSetup; + } + + if (dir_in) { + /* not sure if this is important, but we'll clear it anyway + */ + if (ints & S3C_DIEPMSK_INTknTXFEmpMsk) { + dev_dbg(hsotg->dev, "%s: ep%d: INTknTXFEmpMsk\n", + __func__, idx); + clear |= S3C_DIEPMSK_INTknTXFEmpMsk; + } + + /* this probably means something bad is happening */ + if (ints & S3C_DIEPMSK_INTknEPMisMsk) { + dev_warn(hsotg->dev, "%s: ep%d: INTknEP\n", + __func__, idx); + clear |= S3C_DIEPMSK_INTknEPMisMsk; + } + } + + writel(clear, hsotg->regs + epint_reg); +} + +/** + * s3c_hsotg_irq_enumdone - Handle EnumDone interrupt (enumeration done) + * @hsotg: The device state. + * + * Handle updating the device settings after the enumeration phase has + * been completed. +*/ +static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) +{ + u32 dsts = readl(hsotg->regs + S3C_DSTS); + int ep0_mps = 0, ep_mps; + + /* This should signal the finish of the enumeration phase + * of the USB handshaking, so we should now know what rate + * we connected at. */ + + dev_dbg(hsotg->dev, "EnumDone (DSTS=0x%08x)\n", dsts); + + /* note, since we're limited by the size of transfer on EP0, and + * it seems IN transfers must be a even number of packets we do + * not advertise a 64byte MPS on EP0. */ + + /* catch both EnumSpd_FS and EnumSpd_FS48 */ + switch (dsts & S3C_DSTS_EnumSpd_MASK) { + case S3C_DSTS_EnumSpd_FS: + case S3C_DSTS_EnumSpd_FS48: + hsotg->gadget.speed = USB_SPEED_FULL; + dev_info(hsotg->dev, "new device is full-speed\n"); + + ep0_mps = EP0_MPS_LIMIT; + ep_mps = 64; + break; + + case S3C_DSTS_EnumSpd_HS: + dev_info(hsotg->dev, "new device is high-speed\n"); + hsotg->gadget.speed = USB_SPEED_HIGH; + + ep0_mps = EP0_MPS_LIMIT; + ep_mps = 512; + break; + + case S3C_DSTS_EnumSpd_LS: + hsotg->gadget.speed = USB_SPEED_LOW; + dev_info(hsotg->dev, "new device is low-speed\n"); + + /* note, we don't actually support LS in this driver at the + * moment, and the documentation seems to imply that it isn't + * supported by the PHYs on some of the devices. + */ + break; + } + + /* we should now know the maximum packet size for an + * endpoint, so set the endpoints to a default value. */ + + if (ep0_mps) { + int i; + s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps); + for (i = 1; i < S3C_HSOTG_EPS; i++) + s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps); + } + + /* ensure after enumeration our EP0 is active */ + + s3c_hsotg_enqueue_setup(hsotg); + + dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", + readl(hsotg->regs + S3C_DIEPCTL0), + readl(hsotg->regs + S3C_DOEPCTL0)); +} + +/** + * kill_all_requests - remove all requests from the endpoint's queue + * @hsotg: The device state. + * @ep: The endpoint the requests may be on. + * @result: The result code to use. + * @force: Force removal of any current requests + * + * Go through the requests on the given endpoint and mark them + * completed with the given result code. + */ +static void kill_all_requests(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *ep, + int result, bool force) +{ + struct s3c_hsotg_req *req, *treq; + unsigned long flags; + + spin_lock_irqsave(&ep->lock, flags); + + list_for_each_entry_safe(req, treq, &ep->queue, queue) { + /* currently, we can't do much about an already + * running request on an in endpoint */ + + if (ep->req == req && ep->dir_in && !force) + continue; + + s3c_hsotg_complete_request(hsotg, ep, req, + result); + } + + spin_unlock_irqrestore(&ep->lock, flags); +} + +#define call_gadget(_hs, _entry) \ + if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \ + (_hs)->driver && (_hs)->driver->_entry) \ + (_hs)->driver->_entry(&(_hs)->gadget); + +/** + * s3c_hsotg_disconnect_irq - disconnect irq service + * @hsotg: The device state. + * + * A disconnect IRQ has been received, meaning that the host has + * lost contact with the bus. Remove all current transactions + * and signal the gadget driver that this has happened. +*/ +static void s3c_hsotg_disconnect_irq(struct s3c_hsotg *hsotg) +{ + unsigned ep; + + for (ep = 0; ep < S3C_HSOTG_EPS; ep++) + kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true); + + call_gadget(hsotg, disconnect); +} + +/** + * s3c_hsotg_irq_fifoempty - TX FIFO empty interrupt handler + * @hsotg: The device state: + * @periodic: True if this is a periodic FIFO interrupt + */ +static void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic) +{ + struct s3c_hsotg_ep *ep; + int epno, ret; + + /* look through for any more data to transmit */ + + for (epno = 0; epno < S3C_HSOTG_EPS; epno++) { + ep = &hsotg->eps[epno]; + + if (!ep->dir_in) + continue; + + if ((periodic && !ep->periodic) || + (!periodic && ep->periodic)) + continue; + + ret = s3c_hsotg_trytx(hsotg, ep); + if (ret < 0) + break; + } +} + +static struct s3c_hsotg *our_hsotg; + +/* IRQ flags which will trigger a retry around the IRQ loop */ +#define IRQ_RETRY_MASK (S3C_GINTSTS_NPTxFEmp | \ + S3C_GINTSTS_PTxFEmp | \ + S3C_GINTSTS_RxFLvl) + +/** + * s3c_hsotg_irq - handle device interrupt + * @irq: The IRQ number triggered + * @pw: The pw value when registered the handler. + */ +static irqreturn_t s3c_hsotg_irq(int irq, void *pw) +{ + struct s3c_hsotg *hsotg = pw; + int retry_count = 8; + u32 gintsts; + u32 gintmsk; + +irq_retry: + gintsts = readl(hsotg->regs + S3C_GINTSTS); + gintmsk = readl(hsotg->regs + S3C_GINTMSK); + + dev_dbg(hsotg->dev, "%s: %08x %08x (%08x) retry %d\n", + __func__, gintsts, gintsts & gintmsk, gintmsk, retry_count); + + gintsts &= gintmsk; + + if (gintsts & S3C_GINTSTS_OTGInt) { + u32 otgint = readl(hsotg->regs + S3C_GOTGINT); + + dev_info(hsotg->dev, "OTGInt: %08x\n", otgint); + + writel(otgint, hsotg->regs + S3C_GOTGINT); + writel(S3C_GINTSTS_OTGInt, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_DisconnInt) { + dev_dbg(hsotg->dev, "%s: DisconnInt\n", __func__); + writel(S3C_GINTSTS_DisconnInt, hsotg->regs + S3C_GINTSTS); + + s3c_hsotg_disconnect_irq(hsotg); + } + + if (gintsts & S3C_GINTSTS_SessReqInt) { + dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__); + writel(S3C_GINTSTS_SessReqInt, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_EnumDone) { + s3c_hsotg_irq_enumdone(hsotg); + writel(S3C_GINTSTS_EnumDone, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_ConIDStsChng) { + dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n", + readl(hsotg->regs + S3C_DSTS), + readl(hsotg->regs + S3C_GOTGCTL)); + + writel(S3C_GINTSTS_ConIDStsChng, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & (S3C_GINTSTS_OEPInt | S3C_GINTSTS_IEPInt)) { + u32 daint = readl(hsotg->regs + S3C_DAINT); + u32 daint_out = daint >> S3C_DAINT_OutEP_SHIFT; + u32 daint_in = daint & ~(daint_out << S3C_DAINT_OutEP_SHIFT); + int ep; + + dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint); + + for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) { + if (daint_out & 1) + s3c_hsotg_epint(hsotg, ep, 0); + } + + for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) { + if (daint_in & 1) + s3c_hsotg_epint(hsotg, ep, 1); + } + + writel(daint, hsotg->regs + S3C_DAINT); + writel(gintsts & (S3C_GINTSTS_OEPInt | S3C_GINTSTS_IEPInt), + hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_USBRst) { + dev_info(hsotg->dev, "%s: USBRst\n", __func__); + dev_dbg(hsotg->dev, "GNPTXSTS=%08x\n", + readl(hsotg->regs + S3C_GNPTXSTS)); + + kill_all_requests(hsotg, &hsotg->eps[0], -ECONNRESET, true); + + /* it seems after a reset we can end up with a situation + * where the TXFIFO still has data in it... try flushing + * it to remove anything that may still be in it. + */ + + if (1) { + writel(S3C_GRSTCTL_TxFNum(0) | S3C_GRSTCTL_TxFFlsh, + hsotg->regs + S3C_GRSTCTL); + + dev_info(hsotg->dev, "GNPTXSTS=%08x\n", + readl(hsotg->regs + S3C_GNPTXSTS)); + } + + s3c_hsotg_enqueue_setup(hsotg); + + writel(S3C_GINTSTS_USBRst, hsotg->regs + S3C_GINTSTS); + } + + /* check both FIFOs */ + + if (gintsts & S3C_GINTSTS_NPTxFEmp) { + dev_dbg(hsotg->dev, "NPTxFEmp\n"); + + /* Disable the interrupt to stop it happening again + * unless one of these endpoint routines decides that + * it needs re-enabling */ + + s3c_hsotg_disable_gsint(hsotg, S3C_GINTSTS_NPTxFEmp); + s3c_hsotg_irq_fifoempty(hsotg, false); + + writel(S3C_GINTSTS_NPTxFEmp, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_PTxFEmp) { + dev_dbg(hsotg->dev, "PTxFEmp\n"); + + /* See note in S3C_GINTSTS_NPTxFEmp */ + + s3c_hsotg_disable_gsint(hsotg, S3C_GINTSTS_PTxFEmp); + s3c_hsotg_irq_fifoempty(hsotg, true); + + writel(S3C_GINTSTS_PTxFEmp, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_RxFLvl) { + /* note, since GINTSTS_RxFLvl doubles as FIFO-not-empty, + * we need to retry s3c_hsotg_handle_rx if this is still + * set. */ + + s3c_hsotg_handle_rx(hsotg); + writel(S3C_GINTSTS_RxFLvl, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_ModeMis) { + dev_warn(hsotg->dev, "warning, mode mismatch triggered\n"); + writel(S3C_GINTSTS_ModeMis, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_USBSusp) { + dev_info(hsotg->dev, "S3C_GINTSTS_USBSusp\n"); + writel(S3C_GINTSTS_USBSusp, hsotg->regs + S3C_GINTSTS); + + call_gadget(hsotg, suspend); + } + + if (gintsts & S3C_GINTSTS_WkUpInt) { + dev_info(hsotg->dev, "S3C_GINTSTS_WkUpIn\n"); + writel(S3C_GINTSTS_WkUpInt, hsotg->regs + S3C_GINTSTS); + + call_gadget(hsotg, resume); + } + + if (gintsts & S3C_GINTSTS_ErlySusp) { + dev_dbg(hsotg->dev, "S3C_GINTSTS_ErlySusp\n"); + writel(S3C_GINTSTS_ErlySusp, hsotg->regs + S3C_GINTSTS); + } + + /* these next two seem to crop-up occasionally causing the core + * to shutdown the USB transfer, so try clearing them and logging + * the occurence. */ + + if (gintsts & S3C_GINTSTS_GOUTNakEff) { + dev_info(hsotg->dev, "GOUTNakEff triggered\n"); + + s3c_hsotg_dump(hsotg); + + writel(S3C_DCTL_CGOUTNak, hsotg->regs + S3C_DCTL); + writel(S3C_GINTSTS_GOUTNakEff, hsotg->regs + S3C_GINTSTS); + } + + if (gintsts & S3C_GINTSTS_GINNakEff) { + dev_info(hsotg->dev, "GINNakEff triggered\n"); + + s3c_hsotg_dump(hsotg); + + writel(S3C_DCTL_CGNPInNAK, hsotg->regs + S3C_DCTL); + writel(S3C_GINTSTS_GINNakEff, hsotg->regs + S3C_GINTSTS); + } + + /* if we've had fifo events, we should try and go around the + * loop again to see if there's any point in returning yet. */ + + if (gintsts & IRQ_RETRY_MASK && --retry_count > 0) + goto irq_retry; + + return IRQ_HANDLED; +} + +/** + * s3c_hsotg_ep_enable - enable the given endpoint + * @ep: The USB endpint to configure + * @desc: The USB endpoint descriptor to configure with. + * + * This is called from the USB gadget code's usb_ep_enable(). +*/ +static int s3c_hsotg_ep_enable(struct usb_ep *ep, + const struct usb_endpoint_descriptor *desc) +{ + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hsotg = hs_ep->parent; + unsigned long flags; + int index = hs_ep->index; + u32 epctrl_reg; + u32 epctrl; + u32 mps; + int dir_in; + + dev_dbg(hsotg->dev, + "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", + __func__, ep->name, desc->bEndpointAddress, desc->bmAttributes, + desc->wMaxPacketSize, desc->bInterval); + + /* not to be called for EP0 */ + WARN_ON(index == 0); + + dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0; + if (dir_in != hs_ep->dir_in) { + dev_err(hsotg->dev, "%s: direction mismatch!\n", __func__); + return -EINVAL; + } + + mps = le16_to_cpu(desc->wMaxPacketSize); + + /* note, we handle this here instead of s3c_hsotg_set_ep_maxpacket */ + + epctrl_reg = dir_in ? S3C_DIEPCTL(index) : S3C_DOEPCTL(index); + epctrl = readl(hsotg->regs + epctrl_reg); + + dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", + __func__, epctrl, epctrl_reg); + + spin_lock_irqsave(&hs_ep->lock, flags); + + epctrl &= ~(S3C_DxEPCTL_EPType_MASK | S3C_DxEPCTL_MPS_MASK); + epctrl |= S3C_DxEPCTL_MPS(mps); + + /* mark the endpoint as active, otherwise the core may ignore + * transactions entirely for this endpoint */ + epctrl |= S3C_DxEPCTL_USBActEp; + + /* set the NAK status on the endpoint, otherwise we might try and + * do something with data that we've yet got a request to process + * since the RXFIFO will take data for an endpoint even if the + * size register hasn't been set. + */ + + epctrl |= S3C_DxEPCTL_SNAK; + + /* update the endpoint state */ + hs_ep->ep.maxpacket = mps; + + /* default, set to non-periodic */ + hs_ep->periodic = 0; + + switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_ISOC: + dev_err(hsotg->dev, "no current ISOC support\n"); + return -EINVAL; + + case USB_ENDPOINT_XFER_BULK: + epctrl |= S3C_DxEPCTL_EPType_Bulk; + break; + + case USB_ENDPOINT_XFER_INT: + if (dir_in) { + /* Allocate our TxFNum by simply using the index + * of the endpoint for the moment. We could do + * something better if the host indicates how + * many FIFOs we are expecting to use. */ + + hs_ep->periodic = 1; + epctrl |= S3C_DxEPCTL_TxFNum(index); + } + + epctrl |= S3C_DxEPCTL_EPType_Intterupt; + break; + + case USB_ENDPOINT_XFER_CONTROL: + epctrl |= S3C_DxEPCTL_EPType_Control; + break; + } + + /* for non control endpoints, set PID to D0 */ + if (index) + epctrl |= S3C_DxEPCTL_SetD0PID; + + dev_dbg(hsotg->dev, "%s: write DxEPCTL=0x%08x\n", + __func__, epctrl); + + writel(epctrl, hsotg->regs + epctrl_reg); + dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x\n", + __func__, readl(hsotg->regs + epctrl_reg)); + + /* enable the endpoint interrupt */ + s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); + + spin_unlock_irqrestore(&hs_ep->lock, flags); + return 0; +} + +static int s3c_hsotg_ep_disable(struct usb_ep *ep) +{ + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hsotg = hs_ep->parent; + int dir_in = hs_ep->dir_in; + int index = hs_ep->index; + unsigned long flags; + u32 epctrl_reg; + u32 ctrl; + + dev_info(hsotg->dev, "%s(ep %p)\n", __func__, ep); + + if (ep == &hsotg->eps[0].ep) { + dev_err(hsotg->dev, "%s: called for ep0\n", __func__); + return -EINVAL; + } + + epctrl_reg = dir_in ? S3C_DIEPCTL(index) : S3C_DOEPCTL(index); + + /* terminate all requests with shutdown */ + kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false); + + spin_lock_irqsave(&hs_ep->lock, flags); + + ctrl = readl(hsotg->regs + epctrl_reg); + ctrl &= ~S3C_DxEPCTL_EPEna; + ctrl &= ~S3C_DxEPCTL_USBActEp; + ctrl |= S3C_DxEPCTL_SNAK; + + dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); + writel(ctrl, hsotg->regs + epctrl_reg); + + /* disable endpoint interrupts */ + s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); + + spin_unlock_irqrestore(&hs_ep->lock, flags); + return 0; +} + +/** + * on_list - check request is on the given endpoint + * @ep: The endpoint to check. + * @test: The request to test if it is on the endpoint. +*/ +static bool on_list(struct s3c_hsotg_ep *ep, struct s3c_hsotg_req *test) +{ + struct s3c_hsotg_req *req, *treq; + + list_for_each_entry_safe(req, treq, &ep->queue, queue) { + if (req == test) + return true; + } + + return false; +} + +static int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) +{ + struct s3c_hsotg_req *hs_req = our_req(req); + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hs = hs_ep->parent; + unsigned long flags; + + dev_info(hs->dev, "ep_dequeue(%p,%p)\n", ep, req); + + if (hs_req == hs_ep->req) { + dev_dbg(hs->dev, "%s: already in progress\n", __func__); + return -EINPROGRESS; + } + + spin_lock_irqsave(&hs_ep->lock, flags); + + if (!on_list(hs_ep, hs_req)) { + spin_unlock_irqrestore(&hs_ep->lock, flags); + return -EINVAL; + } + + s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET); + spin_unlock_irqrestore(&hs_ep->lock, flags); + + return 0; +} + +static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) +{ + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hs = hs_ep->parent; + int index = hs_ep->index; + unsigned long irqflags; + u32 epreg; + u32 epctl; + + dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value); + + spin_lock_irqsave(&hs_ep->lock, irqflags); + + /* write both IN and OUT control registers */ + + epreg = S3C_DIEPCTL(index); + epctl = readl(hs->regs + epreg); + + if (value) + epctl |= S3C_DxEPCTL_Stall; + else + epctl &= ~S3C_DxEPCTL_Stall; + + writel(epctl, hs->regs + epreg); + + epreg = S3C_DOEPCTL(index); + epctl = readl(hs->regs + epreg); + + if (value) + epctl |= S3C_DxEPCTL_Stall; + else + epctl &= ~S3C_DxEPCTL_Stall; + + writel(epctl, hs->regs + epreg); + + spin_unlock_irqrestore(&hs_ep->lock, irqflags); + + return 0; +} + +static struct usb_ep_ops s3c_hsotg_ep_ops = { + .enable = s3c_hsotg_ep_enable, + .disable = s3c_hsotg_ep_disable, + .alloc_request = s3c_hsotg_ep_alloc_request, + .free_request = s3c_hsotg_ep_free_request, + .queue = s3c_hsotg_ep_queue, + .dequeue = s3c_hsotg_ep_dequeue, + .set_halt = s3c_hsotg_ep_sethalt, + /* note, don't belive we have any call for the fifo routines */ +}; + +/** + * s3c_hsotg_corereset - issue softreset to the core + * @hsotg: The device state + * + * Issue a soft reset to the core, and await the core finishing it. +*/ +static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg) +{ + int timeout; + u32 grstctl; + + dev_dbg(hsotg->dev, "resetting core\n"); + + /* issue soft reset */ + writel(S3C_GRSTCTL_CSftRst, hsotg->regs + S3C_GRSTCTL); + + timeout = 1000; + do { + grstctl = readl(hsotg->regs + S3C_GRSTCTL); + } while (!(grstctl & S3C_GRSTCTL_CSftRst) && timeout-- > 0); + + if (!grstctl & S3C_GRSTCTL_CSftRst) { + dev_err(hsotg->dev, "Failed to get CSftRst asserted\n"); + return -EINVAL; + } + + timeout = 1000; + + while (1) { + u32 grstctl = readl(hsotg->regs + S3C_GRSTCTL); + + if (timeout-- < 0) { + dev_info(hsotg->dev, + "%s: reset failed, GRSTCTL=%08x\n", + __func__, grstctl); + return -ETIMEDOUT; + } + + if (grstctl & S3C_GRSTCTL_CSftRst) + continue; + + if (!(grstctl & S3C_GRSTCTL_AHBIdle)) + continue; + + break; /* reset done */ + } + + dev_dbg(hsotg->dev, "reset successful\n"); + return 0; +} + +int usb_gadget_register_driver(struct usb_gadget_driver *driver) +{ + struct s3c_hsotg *hsotg = our_hsotg; + int ret; + + if (!hsotg) { + printk(KERN_ERR "%s: called with no device\n", __func__); + return -ENODEV; + } + + if (!driver) { + dev_err(hsotg->dev, "%s: no driver\n", __func__); + return -EINVAL; + } + + if (driver->speed != USB_SPEED_HIGH && + driver->speed != USB_SPEED_FULL) { + dev_err(hsotg->dev, "%s: bad speed\n", __func__); + } + + if (!driver->bind || !driver->setup) { + dev_err(hsotg->dev, "%s: missing entry points\n", __func__); + return -EINVAL; + } + + WARN_ON(hsotg->driver); + + driver->driver.bus = NULL; + hsotg->driver = driver; + hsotg->gadget.dev.driver = &driver->driver; + hsotg->gadget.dev.dma_mask = hsotg->dev->dma_mask; + hsotg->gadget.speed = USB_SPEED_UNKNOWN; + + ret = device_add(&hsotg->gadget.dev); + if (ret) { + dev_err(hsotg->dev, "failed to register gadget device\n"); + goto err; + } + + ret = driver->bind(&hsotg->gadget); + if (ret) { + dev_err(hsotg->dev, "failed bind %s\n", driver->driver.name); + + hsotg->gadget.dev.driver = NULL; + hsotg->driver = NULL; + goto err; + } + + /* we must now enable ep0 ready for host detection and then + * set configuration. */ + + s3c_hsotg_corereset(hsotg); + + /* set the PLL on, remove the HNP/SRP and set the PHY */ + writel(S3C_GUSBCFG_PHYIf16 | S3C_GUSBCFG_TOutCal(7) | + (0x5 << 10), hsotg->regs + S3C_GUSBCFG); + + /* looks like soft-reset changes state of FIFOs */ + s3c_hsotg_init_fifo(hsotg); + + __orr32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon); + + writel(1 << 18 | S3C_DCFG_DevSpd_HS, hsotg->regs + S3C_DCFG); + + writel(S3C_GINTSTS_DisconnInt | S3C_GINTSTS_SessReqInt | + S3C_GINTSTS_ConIDStsChng | S3C_GINTSTS_USBRst | + S3C_GINTSTS_EnumDone | S3C_GINTSTS_OTGInt | + S3C_GINTSTS_USBSusp | S3C_GINTSTS_WkUpInt | + S3C_GINTSTS_GOUTNakEff | S3C_GINTSTS_GINNakEff | + S3C_GINTSTS_ErlySusp, + hsotg->regs + S3C_GINTMSK); + + if (using_dma(hsotg)) + writel(S3C_GAHBCFG_GlblIntrEn | S3C_GAHBCFG_DMAEn | + S3C_GAHBCFG_HBstLen_Incr4, + hsotg->regs + S3C_GAHBCFG); + else + writel(S3C_GAHBCFG_GlblIntrEn, hsotg->regs + S3C_GAHBCFG); + + /* Enabling INTknTXFEmpMsk here seems to be a big mistake, we end + * up being flooded with interrupts if the host is polling the + * endpoint to try and read data. */ + + writel(S3C_DIEPMSK_TimeOUTMsk | S3C_DIEPMSK_AHBErrMsk | + S3C_DIEPMSK_INTknEPMisMsk | + S3C_DIEPMSK_EPDisbldMsk | S3C_DIEPMSK_XferComplMsk, + hsotg->regs + S3C_DIEPMSK); + + /* don't need XferCompl, we get that from RXFIFO in slave mode. In + * DMA mode we may need this. */ + writel(S3C_DOEPMSK_SetupMsk | S3C_DOEPMSK_AHBErrMsk | + S3C_DOEPMSK_EPDisbldMsk | + using_dma(hsotg) ? (S3C_DIEPMSK_XferComplMsk | + S3C_DIEPMSK_TimeOUTMsk) : 0, + hsotg->regs + S3C_DOEPMSK); + + writel(0, hsotg->regs + S3C_DAINTMSK); + + dev_info(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", + readl(hsotg->regs + S3C_DIEPCTL0), + readl(hsotg->regs + S3C_DOEPCTL0)); + + /* enable in and out endpoint interrupts */ + s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_OEPInt | S3C_GINTSTS_IEPInt); + + /* Enable the RXFIFO when in slave mode, as this is how we collect + * the data. In DMA mode, we get events from the FIFO but also + * things we cannot process, so do not use it. */ + if (!using_dma(hsotg)) + s3c_hsotg_en_gsint(hsotg, S3C_GINTSTS_RxFLvl); + + /* Enable interrupts for EP0 in and out */ + s3c_hsotg_ctrl_epint(hsotg, 0, 0, 1); + s3c_hsotg_ctrl_epint(hsotg, 0, 1, 1); + + __orr32(hsotg->regs + S3C_DCTL, S3C_DCTL_PWROnPrgDone); + udelay(10); /* see openiboot */ + __bic32(hsotg->regs + S3C_DCTL, S3C_DCTL_PWROnPrgDone); + + dev_info(hsotg->dev, "DCTL=0x%08x\n", readl(hsotg->regs + S3C_DCTL)); + + /* S3C_DxEPCTL_USBActEp says RO in manual, but seems to be set by + writing to the EPCTL register.. */ + + /* set to read 1 8byte packet */ + writel(S3C_DxEPTSIZ_MC(1) | S3C_DxEPTSIZ_PktCnt(1) | + S3C_DxEPTSIZ_XferSize(8), hsotg->regs + DOEPTSIZ0); + + writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | + S3C_DxEPCTL_CNAK | S3C_DxEPCTL_EPEna | + S3C_DxEPCTL_USBActEp, + hsotg->regs + S3C_DOEPCTL0); + + /* enable, but don't activate EP0in */ + writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | + S3C_DxEPCTL_USBActEp, hsotg->regs + S3C_DIEPCTL0); + + s3c_hsotg_enqueue_setup(hsotg); + + dev_info(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", + readl(hsotg->regs + S3C_DIEPCTL0), + readl(hsotg->regs + S3C_DOEPCTL0)); + + /* clear global NAKs */ + writel(S3C_DCTL_CGOUTNak | S3C_DCTL_CGNPInNAK, + hsotg->regs + S3C_DCTL); + + /* remove the soft-disconnect and let's go */ + __bic32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon); + + /* report to the user, and return */ + + dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); + return 0; + +err: + hsotg->driver = NULL; + hsotg->gadget.dev.driver = NULL; + return ret; +} + +int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) +{ + struct s3c_hsotg *hsotg = our_hsotg; + int ep; + + if (!hsotg) + return -ENODEV; + + if (!driver || driver != hsotg->driver || !driver->unbind) + return -EINVAL; + + /* all endpoints should be shutdown */ + for (ep = 0; ep < S3C_HSOTG_EPS; ep++) + s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); + + call_gadget(hsotg, disconnect); + + driver->unbind(&hsotg->gadget); + hsotg->driver = NULL; + hsotg->gadget.speed = USB_SPEED_UNKNOWN; + + device_del(&hsotg->gadget.dev); + + dev_info(hsotg->dev, "unregistered gadget driver '%s'\n", + driver->driver.name); + + return 0; +} +EXPORT_SYMBOL(usb_gadget_unregister_driver); + +static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget) +{ + return s3c_hsotg_read_frameno(to_hsotg(gadget)); +} + +static struct usb_gadget_ops s3c_hsotg_gadget_ops = { + .get_frame = s3c_hsotg_gadget_getframe, +}; + +/** + * s3c_hsotg_initep - initialise a single endpoint + * @hsotg: The device state. + * @hs_ep: The endpoint to be initialised. + * @epnum: The endpoint number + * + * Initialise the given endpoint (as part of the probe and device state + * creation) to give to the gadget driver. Setup the endpoint name, any + * direction information and other state that may be required. + */ +static void __devinit s3c_hsotg_initep(struct s3c_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, + int epnum) +{ + u32 ptxfifo; + char *dir; + + if (epnum == 0) + dir = ""; + else if ((epnum % 2) == 0) { + dir = "out"; + } else { + dir = "in"; + hs_ep->dir_in = 1; + } + + hs_ep->index = epnum; + + snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir); + + INIT_LIST_HEAD(&hs_ep->queue); + INIT_LIST_HEAD(&hs_ep->ep.ep_list); + + spin_lock_init(&hs_ep->lock); + + /* add to the list of endpoints known by the gadget driver */ + if (epnum) + list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list); + + hs_ep->parent = hsotg; + hs_ep->ep.name = hs_ep->name; + hs_ep->ep.maxpacket = epnum ? 512 : EP0_MPS_LIMIT; + hs_ep->ep.ops = &s3c_hsotg_ep_ops; + + /* Read the FIFO size for the Periodic TX FIFO, even if we're + * an OUT endpoint, we may as well do this if in future the + * code is changed to make each endpoint's direction changeable. + */ + + ptxfifo = readl(hsotg->regs + S3C_DPTXFSIZn(epnum)); + hs_ep->fifo_size = S3C_DPTXFSIZn_DPTxFSize_GET(ptxfifo); + + /* if we're using dma, we need to set the next-endpoint pointer + * to be something valid. + */ + + if (using_dma(hsotg)) { + u32 next = S3C_DxEPCTL_NextEp((epnum + 1) % 15); + writel(next, hsotg->regs + S3C_DIEPCTL(epnum)); + writel(next, hsotg->regs + S3C_DOEPCTL(epnum)); + } +} + +/** + * s3c_hsotg_otgreset - reset the OtG phy block + * @hsotg: The host state. + * + * Power up the phy, set the basic configuration and start the PHY. + */ +static void s3c_hsotg_otgreset(struct s3c_hsotg *hsotg) +{ + u32 osc; + + writel(0, S3C_PHYPWR); + mdelay(1); + + osc = hsotg->plat->is_osc ? S3C_PHYCLK_EXT_OSC : 0; + + writel(osc | 0x10, S3C_PHYCLK); + + /* issue a full set of resets to the otg and core */ + + writel(S3C_RSTCON_PHY, S3C_RSTCON); + udelay(20); /* at-least 10uS */ + writel(0, S3C_RSTCON); +} + + +static void s3c_hsotg_init(struct s3c_hsotg *hsotg) +{ + /* unmask subset of endpoint interrupts */ + + writel(S3C_DIEPMSK_TimeOUTMsk | S3C_DIEPMSK_AHBErrMsk | + S3C_DIEPMSK_EPDisbldMsk | S3C_DIEPMSK_XferComplMsk, + hsotg->regs + S3C_DIEPMSK); + + writel(S3C_DOEPMSK_SetupMsk | S3C_DOEPMSK_AHBErrMsk | + S3C_DOEPMSK_EPDisbldMsk | S3C_DOEPMSK_XferComplMsk, + hsotg->regs + S3C_DOEPMSK); + + writel(0, hsotg->regs + S3C_DAINTMSK); + + if (0) { + /* post global nak until we're ready */ + writel(S3C_DCTL_SGNPInNAK | S3C_DCTL_SGOUTNak, + hsotg->regs + S3C_DCTL); + } + + /* setup fifos */ + + dev_info(hsotg->dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", + readl(hsotg->regs + S3C_GRXFSIZ), + readl(hsotg->regs + S3C_GNPTXFSIZ)); + + s3c_hsotg_init_fifo(hsotg); + + /* set the PLL on, remove the HNP/SRP and set the PHY */ + writel(S3C_GUSBCFG_PHYIf16 | S3C_GUSBCFG_TOutCal(7) | (0x5 << 10), + hsotg->regs + S3C_GUSBCFG); + + writel(using_dma(hsotg) ? S3C_GAHBCFG_DMAEn : 0x0, + hsotg->regs + S3C_GAHBCFG); +} + +static void s3c_hsotg_dump(struct s3c_hsotg *hsotg) +{ + struct device *dev = hsotg->dev; + void __iomem *regs = hsotg->regs; + u32 val; + int idx; + + dev_info(dev, "DCFG=0x%08x, DCTL=0x%08x, DIEPMSK=%08x\n", + readl(regs + S3C_DCFG), readl(regs + S3C_DCTL), + readl(regs + S3C_DIEPMSK)); + + dev_info(dev, "GAHBCFG=0x%08x, 0x44=0x%08x\n", + readl(regs + S3C_GAHBCFG), readl(regs + 0x44)); + + dev_info(dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", + readl(regs + S3C_GRXFSIZ), readl(regs + S3C_GNPTXFSIZ)); + + /* show periodic fifo settings */ + + for (idx = 1; idx <= 15; idx++) { + val = readl(regs + S3C_DPTXFSIZn(idx)); + dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx, + val >> S3C_DPTXFSIZn_DPTxFSize_SHIFT, + val & S3C_DPTXFSIZn_DPTxFStAddr_MASK); + } + + for (idx = 0; idx < 15; idx++) { + dev_info(dev, + "ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx, + readl(regs + S3C_DIEPCTL(idx)), + readl(regs + S3C_DIEPTSIZ(idx)), + readl(regs + S3C_DIEPDMA(idx))); + + val = readl(regs + S3C_DOEPCTL(idx)); + dev_info(dev, + "ep%d-out: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", + idx, readl(regs + S3C_DOEPCTL(idx)), + readl(regs + S3C_DOEPTSIZ(idx)), + readl(regs + S3C_DOEPDMA(idx))); + + } + + dev_info(dev, "DVBUSDIS=0x%08x, DVBUSPULSE=%08x\n", + readl(regs + S3C_DVBUSDIS), readl(regs + S3C_DVBUSPULSE)); +} + + +/** + * state_show - debugfs: show overall driver and device state. + * @seq: The seq file to write to. + * @v: Unused parameter. + * + * This debugfs entry shows the overall state of the hardware and + * some general information about each of the endpoints available + * to the system. + */ +static int state_show(struct seq_file *seq, void *v) +{ + struct s3c_hsotg *hsotg = seq->private; + void __iomem *regs = hsotg->regs; + int idx; + + seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", + readl(regs + S3C_DCFG), + readl(regs + S3C_DCTL), + readl(regs + S3C_DSTS)); + + seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", + readl(regs + S3C_DIEPMSK), readl(regs + S3C_DOEPMSK)); + + seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", + readl(regs + S3C_GINTMSK), + readl(regs + S3C_GINTSTS)); + + seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", + readl(regs + S3C_DAINTMSK), + readl(regs + S3C_DAINT)); + + seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", + readl(regs + S3C_GNPTXSTS), + readl(regs + S3C_GRXSTSR)); + + seq_printf(seq, "\nEndpoint status:\n"); + + for (idx = 0; idx < 15; idx++) { + u32 in, out; + + in = readl(regs + S3C_DIEPCTL(idx)); + out = readl(regs + S3C_DOEPCTL(idx)); + + seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", + idx, in, out); + + in = readl(regs + S3C_DIEPTSIZ(idx)); + out = readl(regs + S3C_DOEPTSIZ(idx)); + + seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", + in, out); + + seq_printf(seq, "\n"); + } + + return 0; +} + +static int state_open(struct inode *inode, struct file *file) +{ + return single_open(file, state_show, inode->i_private); +} + +static const struct file_operations state_fops = { + .owner = THIS_MODULE, + .open = state_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/** + * fifo_show - debugfs: show the fifo information + * @seq: The seq_file to write data to. + * @v: Unused parameter. + * + * Show the FIFO information for the overall fifo and all the + * periodic transmission FIFOs. +*/ +static int fifo_show(struct seq_file *seq, void *v) +{ + struct s3c_hsotg *hsotg = seq->private; + void __iomem *regs = hsotg->regs; + u32 val; + int idx; + + seq_printf(seq, "Non-periodic FIFOs:\n"); + seq_printf(seq, "RXFIFO: Size %d\n", readl(regs + S3C_GRXFSIZ)); + + val = readl(regs + S3C_GNPTXFSIZ); + seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", + val >> S3C_GNPTXFSIZ_NPTxFDep_SHIFT, + val & S3C_GNPTXFSIZ_NPTxFStAddr_MASK); + + seq_printf(seq, "\nPeriodic TXFIFOs:\n"); + + for (idx = 1; idx <= 15; idx++) { + val = readl(regs + S3C_DPTXFSIZn(idx)); + + seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, + val >> S3C_DPTXFSIZn_DPTxFSize_SHIFT, + val & S3C_DPTXFSIZn_DPTxFStAddr_MASK); + } + + return 0; +} + +static int fifo_open(struct inode *inode, struct file *file) +{ + return single_open(file, fifo_show, inode->i_private); +} + +static const struct file_operations fifo_fops = { + .owner = THIS_MODULE, + .open = fifo_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + + +static const char *decode_direction(int is_in) +{ + return is_in ? "in" : "out"; +} + +/** + * ep_show - debugfs: show the state of an endpoint. + * @seq: The seq_file to write data to. + * @v: Unused parameter. + * + * This debugfs entry shows the state of the given endpoint (one is + * registered for each available). +*/ +static int ep_show(struct seq_file *seq, void *v) +{ + struct s3c_hsotg_ep *ep = seq->private; + struct s3c_hsotg *hsotg = ep->parent; + struct s3c_hsotg_req *req; + void __iomem *regs = hsotg->regs; + int index = ep->index; + int show_limit = 15; + unsigned long flags; + + seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", + ep->index, ep->ep.name, decode_direction(ep->dir_in)); + + /* first show the register state */ + + seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", + readl(regs + S3C_DIEPCTL(index)), + readl(regs + S3C_DOEPCTL(index))); + + seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", + readl(regs + S3C_DIEPDMA(index)), + readl(regs + S3C_DOEPDMA(index))); + + seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", + readl(regs + S3C_DIEPINT(index)), + readl(regs + S3C_DOEPINT(index))); + + seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", + readl(regs + S3C_DIEPTSIZ(index)), + readl(regs + S3C_DOEPTSIZ(index))); + + seq_printf(seq, "\n"); + seq_printf(seq, "mps %d\n", ep->ep.maxpacket); + seq_printf(seq, "total_data=%ld\n", ep->total_data); + + seq_printf(seq, "request list (%p,%p):\n", + ep->queue.next, ep->queue.prev); + + spin_lock_irqsave(&ep->lock, flags); + + list_for_each_entry(req, &ep->queue, queue) { + if (--show_limit < 0) { + seq_printf(seq, "not showing more requests...\n"); + break; + } + + seq_printf(seq, "%c req %p: %d bytes @%p, ", + req == ep->req ? '*' : ' ', + req, req->req.length, req->req.buf); + seq_printf(seq, "%d done, res %d\n", + req->req.actual, req->req.status); + } + + spin_unlock_irqrestore(&ep->lock, flags); + + return 0; +} + +static int ep_open(struct inode *inode, struct file *file) +{ + return single_open(file, ep_show, inode->i_private); +} + +static const struct file_operations ep_fops = { + .owner = THIS_MODULE, + .open = ep_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/** + * s3c_hsotg_create_debug - create debugfs directory and files + * @hsotg: The driver state + * + * Create the debugfs files to allow the user to get information + * about the state of the system. The directory name is created + * with the same name as the device itself, in case we end up + * with multiple blocks in future systems. +*/ +static void __devinit s3c_hsotg_create_debug(struct s3c_hsotg *hsotg) +{ + struct dentry *root; + unsigned epidx; + + root = debugfs_create_dir(dev_name(hsotg->dev), NULL); + hsotg->debug_root = root; + if (IS_ERR(root)) { + dev_err(hsotg->dev, "cannot create debug root\n"); + return; + } + + /* create general state file */ + + hsotg->debug_file = debugfs_create_file("state", 0444, root, + hsotg, &state_fops); + + if (IS_ERR(hsotg->debug_file)) + dev_err(hsotg->dev, "%s: failed to create state\n", __func__); + + hsotg->debug_fifo = debugfs_create_file("fifo", 0444, root, + hsotg, &fifo_fops); + + if (IS_ERR(hsotg->debug_fifo)) + dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); + + /* create one file for each endpoint */ + + for (epidx = 0; epidx < S3C_HSOTG_EPS; epidx++) { + struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; + + ep->debugfs = debugfs_create_file(ep->name, 0444, + root, ep, &ep_fops); + + if (IS_ERR(ep->debugfs)) + dev_err(hsotg->dev, "failed to create %s debug file\n", + ep->name); + } +} + +/** + * s3c_hsotg_delete_debug - cleanup debugfs entries + * @hsotg: The driver state + * + * Cleanup (remove) the debugfs files for use on module exit. +*/ +static void __devexit s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) +{ + unsigned epidx; + + for (epidx = 0; epidx < S3C_HSOTG_EPS; epidx++) { + struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; + debugfs_remove(ep->debugfs); + } + + debugfs_remove(hsotg->debug_file); + debugfs_remove(hsotg->debug_fifo); + debugfs_remove(hsotg->debug_root); +} + +/** + * s3c_hsotg_gate - set the hardware gate for the block + * @pdev: The device we bound to + * @on: On or off. + * + * Set the hardware gate setting into the block. If we end up on + * something other than an S3C64XX, then we might need to change this + * to using a platform data callback, or some other mechanism. + */ +static void s3c_hsotg_gate(struct platform_device *pdev, bool on) +{ + unsigned long flags; + u32 others; + + local_irq_save(flags); + + others = __raw_readl(S3C64XX_OTHERS); + if (on) + others |= S3C64XX_OTHERS_USBMASK; + else + others &= ~S3C64XX_OTHERS_USBMASK; + __raw_writel(others, S3C64XX_OTHERS); + + local_irq_restore(flags); +} + +struct s3c_hsotg_plat s3c_hsotg_default_pdata; + +static int __devinit s3c_hsotg_probe(struct platform_device *pdev) +{ + struct s3c_hsotg_plat *plat = pdev->dev.platform_data; + struct device *dev = &pdev->dev; + struct s3c_hsotg *hsotg; + struct resource *res; + int epnum; + int ret; + + if (!plat) + plat = &s3c_hsotg_default_pdata; + + hsotg = kzalloc(sizeof(struct s3c_hsotg) + + sizeof(struct s3c_hsotg_ep) * S3C_HSOTG_EPS, + GFP_KERNEL); + if (!hsotg) { + dev_err(dev, "cannot get memory\n"); + return -ENOMEM; + } + + hsotg->dev = dev; + hsotg->plat = plat; + + platform_set_drvdata(pdev, hsotg); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "cannot find register resource 0\n"); + ret = -EINVAL; + goto err_mem; + } + + hsotg->regs_res = request_mem_region(res->start, resource_size(res), + dev_name(dev)); + if (!hsotg->regs_res) { + dev_err(dev, "cannot reserve registers\n"); + ret = -ENOENT; + goto err_mem; + } + + hsotg->regs = ioremap(res->start, resource_size(res)); + if (!hsotg->regs) { + dev_err(dev, "cannot map registers\n"); + ret = -ENXIO; + goto err_regs_res; + } + + ret = platform_get_irq(pdev, 0); + if (ret < 0) { + dev_err(dev, "cannot find IRQ\n"); + goto err_regs; + } + + hsotg->irq = ret; + + ret = request_irq(ret, s3c_hsotg_irq, 0, dev_name(dev), hsotg); + if (ret < 0) { + dev_err(dev, "cannot claim IRQ\n"); + goto err_regs; + } + + dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq); + + device_initialize(&hsotg->gadget.dev); + + dev_set_name(&hsotg->gadget.dev, "gadget"); + + hsotg->gadget.is_dualspeed = 1; + hsotg->gadget.ops = &s3c_hsotg_gadget_ops; + hsotg->gadget.name = dev_name(dev); + + hsotg->gadget.dev.parent = dev; + hsotg->gadget.dev.dma_mask = dev->dma_mask; + + /* setup endpoint information */ + + INIT_LIST_HEAD(&hsotg->gadget.ep_list); + hsotg->gadget.ep0 = &hsotg->eps[0].ep; + + /* allocate EP0 request */ + + hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep, + GFP_KERNEL); + if (!hsotg->ctrl_req) { + dev_err(dev, "failed to allocate ctrl req\n"); + goto err_regs; + } + + /* reset the system */ + + s3c_hsotg_gate(pdev, true); + + s3c_hsotg_otgreset(hsotg); + s3c_hsotg_corereset(hsotg); + s3c_hsotg_init(hsotg); + + /* initialise the endpoints now the core has been initialised */ + for (epnum = 0; epnum < S3C_HSOTG_EPS; epnum++) + s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum); + + s3c_hsotg_create_debug(hsotg); + + s3c_hsotg_dump(hsotg); + + our_hsotg = hsotg; + return 0; + +err_regs: + iounmap(hsotg->regs); + +err_regs_res: + release_resource(hsotg->regs_res); + kfree(hsotg->regs_res); + +err_mem: + kfree(hsotg); + return ret; +} + +static int __devexit s3c_hsotg_remove(struct platform_device *pdev) +{ + struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); + + s3c_hsotg_delete_debug(hsotg); + + usb_gadget_unregister_driver(hsotg->driver); + + free_irq(hsotg->irq, hsotg); + iounmap(hsotg->regs); + + release_resource(hsotg->regs_res); + kfree(hsotg->regs_res); + + s3c_hsotg_gate(pdev, false); + + kfree(hsotg); + return 0; +} + +#if 1 +#define s3c_hsotg_suspend NULL +#define s3c_hsotg_resume NULL +#endif + +static struct platform_driver s3c_hsotg_driver = { + .driver = { + .name = "s3c-hsotg", + .owner = THIS_MODULE, + }, + .probe = s3c_hsotg_probe, + .remove = __devexit_p(s3c_hsotg_remove), + .suspend = s3c_hsotg_suspend, + .resume = s3c_hsotg_resume, +}; + +static int __init s3c_hsotg_modinit(void) +{ + return platform_driver_register(&s3c_hsotg_driver); +} + +static void __exit s3c_hsotg_modexit(void) +{ + platform_driver_unregister(&s3c_hsotg_driver); +} + +module_init(s3c_hsotg_modinit); +module_exit(s3c_hsotg_modexit); + +MODULE_DESCRIPTION("Samsung S3C USB High-speed/OtG device"); +MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:s3c-hsotg"); diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index 9a2b8920532d..a9b452fe6221 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -28,7 +28,6 @@ #include <linux/ioport.h> #include <linux/sched.h> #include <linux/slab.h> -#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/timer.h> diff --git a/drivers/usb/gadget/u_audio.c b/drivers/usb/gadget/u_audio.c new file mode 100644 index 000000000000..0f3d22fc030e --- /dev/null +++ b/drivers/usb/gadget/u_audio.c @@ -0,0 +1,319 @@ +/* + * u_audio.c -- ALSA audio utilities for Gadget stack + * + * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> + * Copyright (C) 2008 Analog Devices, Inc + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/kernel.h> +#include <linux/utsname.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/ctype.h> +#include <linux/random.h> +#include <linux/syscalls.h> + +#include "u_audio.h" + +/* + * This component encapsulates the ALSA devices for USB audio gadget + */ + +#define FILE_PCM_PLAYBACK "/dev/snd/pcmC0D0p" +#define FILE_PCM_CAPTURE "/dev/snd/pcmC0D0c" +#define FILE_CONTROL "/dev/snd/controlC0" + +static char *fn_play = FILE_PCM_PLAYBACK; +module_param(fn_play, charp, S_IRUGO); +MODULE_PARM_DESC(fn_play, "Playback PCM device file name"); + +static char *fn_cap = FILE_PCM_CAPTURE; +module_param(fn_cap, charp, S_IRUGO); +MODULE_PARM_DESC(fn_cap, "Capture PCM device file name"); + +static char *fn_cntl = FILE_CONTROL; +module_param(fn_cntl, charp, S_IRUGO); +MODULE_PARM_DESC(fn_cntl, "Control device file name"); + +/*-------------------------------------------------------------------------*/ + +/** + * Some ALSA internal helper functions + */ +static int snd_interval_refine_set(struct snd_interval *i, unsigned int val) +{ + struct snd_interval t; + t.empty = 0; + t.min = t.max = val; + t.openmin = t.openmax = 0; + t.integer = 1; + return snd_interval_refine(i, &t); +} + +static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, + snd_pcm_hw_param_t var, unsigned int val, + int dir) +{ + int changed; + if (hw_is_mask(var)) { + struct snd_mask *m = hw_param_mask(params, var); + if (val == 0 && dir < 0) { + changed = -EINVAL; + snd_mask_none(m); + } else { + if (dir > 0) + val++; + else if (dir < 0) + val--; + changed = snd_mask_refine_set( + hw_param_mask(params, var), val); + } + } else if (hw_is_interval(var)) { + struct snd_interval *i = hw_param_interval(params, var); + if (val == 0 && dir < 0) { + changed = -EINVAL; + snd_interval_none(i); + } else if (dir == 0) + changed = snd_interval_refine_set(i, val); + else { + struct snd_interval t; + t.openmin = 1; + t.openmax = 1; + t.empty = 0; + t.integer = 0; + if (dir < 0) { + t.min = val - 1; + t.max = val; + } else { + t.min = val; + t.max = val+1; + } + changed = snd_interval_refine(i, &t); + } + } else + return -EINVAL; + if (changed) { + params->cmask |= 1 << var; + params->rmask |= 1 << var; + } + return changed; +} +/*-------------------------------------------------------------------------*/ + +/** + * Set default hardware params + */ +static int playback_default_hw_params(struct gaudio_snd_dev *snd) +{ + struct snd_pcm_substream *substream = snd->substream; + struct snd_pcm_hw_params *params; + snd_pcm_sframes_t result; + + /* + * SNDRV_PCM_ACCESS_RW_INTERLEAVED, + * SNDRV_PCM_FORMAT_S16_LE + * CHANNELS: 2 + * RATE: 48000 + */ + snd->access = SNDRV_PCM_ACCESS_RW_INTERLEAVED; + snd->format = SNDRV_PCM_FORMAT_S16_LE; + snd->channels = 2; + snd->rate = 48000; + + params = kzalloc(sizeof(*params), GFP_KERNEL); + if (!params) + return -ENOMEM; + + _snd_pcm_hw_params_any(params); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, + snd->access, 0); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, + snd->format, 0); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, + snd->channels, 0); + _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, + snd->rate, 0); + + snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); + snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, params); + + result = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); + if (result < 0) { + ERROR(snd->card, + "Preparing sound card failed: %d\n", (int)result); + kfree(params); + return result; + } + + /* Store the hardware parameters */ + snd->access = params_access(params); + snd->format = params_format(params); + snd->channels = params_channels(params); + snd->rate = params_rate(params); + + kfree(params); + + INFO(snd->card, + "Hardware params: access %x, format %x, channels %d, rate %d\n", + snd->access, snd->format, snd->channels, snd->rate); + + return 0; +} + +/** + * Playback audio buffer data by ALSA PCM device + */ +static size_t u_audio_playback(struct gaudio *card, void *buf, size_t count) +{ + struct gaudio_snd_dev *snd = &card->playback; + struct snd_pcm_substream *substream = snd->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + mm_segment_t old_fs; + ssize_t result; + snd_pcm_sframes_t frames; + +try_again: + if (runtime->status->state == SNDRV_PCM_STATE_XRUN || + runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { + result = snd_pcm_kernel_ioctl(substream, + SNDRV_PCM_IOCTL_PREPARE, NULL); + if (result < 0) { + ERROR(card, "Preparing sound card failed: %d\n", + (int)result); + return result; + } + } + + frames = bytes_to_frames(runtime, count); + old_fs = get_fs(); + set_fs(KERNEL_DS); + result = snd_pcm_lib_write(snd->substream, buf, frames); + if (result != frames) { + ERROR(card, "Playback error: %d\n", (int)result); + set_fs(old_fs); + goto try_again; + } + set_fs(old_fs); + + return 0; +} + +static int u_audio_get_playback_channels(struct gaudio *card) +{ + return card->playback.channels; +} + +static int u_audio_get_playback_rate(struct gaudio *card) +{ + return card->playback.rate; +} + +/** + * Open ALSA PCM and control device files + * Initial the PCM or control device + */ +static int gaudio_open_snd_dev(struct gaudio *card) +{ + struct snd_pcm_file *pcm_file; + struct gaudio_snd_dev *snd; + + if (!card) + return -ENODEV; + + /* Open control device */ + snd = &card->control; + snd->filp = filp_open(fn_cntl, O_RDWR, 0); + if (IS_ERR(snd->filp)) { + int ret = PTR_ERR(snd->filp); + ERROR(card, "unable to open sound control device file: %s\n", + fn_cntl); + snd->filp = NULL; + return ret; + } + snd->card = card; + + /* Open PCM playback device and setup substream */ + snd = &card->playback; + snd->filp = filp_open(fn_play, O_WRONLY, 0); + if (IS_ERR(snd->filp)) { + ERROR(card, "No such PCM playback device: %s\n", fn_play); + snd->filp = NULL; + } + pcm_file = snd->filp->private_data; + snd->substream = pcm_file->substream; + snd->card = card; + playback_default_hw_params(snd); + + /* Open PCM capture device and setup substream */ + snd = &card->capture; + snd->filp = filp_open(fn_cap, O_RDONLY, 0); + if (IS_ERR(snd->filp)) { + ERROR(card, "No such PCM capture device: %s\n", fn_cap); + snd->filp = NULL; + } + pcm_file = snd->filp->private_data; + snd->substream = pcm_file->substream; + snd->card = card; + + return 0; +} + +/** + * Close ALSA PCM and control device files + */ +static int gaudio_close_snd_dev(struct gaudio *gau) +{ + struct gaudio_snd_dev *snd; + + /* Close control device */ + snd = &gau->control; + if (!IS_ERR(snd->filp)) + filp_close(snd->filp, current->files); + + /* Close PCM playback device and setup substream */ + snd = &gau->playback; + if (!IS_ERR(snd->filp)) + filp_close(snd->filp, current->files); + + /* Close PCM capture device and setup substream */ + snd = &gau->capture; + if (!IS_ERR(snd->filp)) + filp_close(snd->filp, current->files); + + return 0; +} + +/** + * gaudio_setup - setup ALSA interface and preparing for USB transfer + * + * This sets up PCM, mixer or MIDI ALSA devices fore USB gadget using. + * + * Returns negative errno, or zero on success + */ +int __init gaudio_setup(struct gaudio *card) +{ + int ret; + + ret = gaudio_open_snd_dev(card); + if (ret) + ERROR(card, "we need at least one control device\n"); + + return ret; + +} + +/** + * gaudio_cleanup - remove ALSA device interface + * + * This is called to free all resources allocated by @gaudio_setup(). + */ +void gaudio_cleanup(struct gaudio *card) +{ + if (card) + gaudio_close_snd_dev(card); +} + diff --git a/drivers/usb/gadget/u_audio.h b/drivers/usb/gadget/u_audio.h new file mode 100644 index 000000000000..cc8d159c648a --- /dev/null +++ b/drivers/usb/gadget/u_audio.h @@ -0,0 +1,56 @@ +/* + * u_audio.h -- interface to USB gadget "ALSA AUDIO" utilities + * + * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> + * Copyright (C) 2008 Analog Devices, Inc + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __U_AUDIO_H +#define __U_AUDIO_H + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/usb/audio.h> +#include <linux/usb/composite.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#include "gadget_chips.h" + +/* + * This represents the USB side of an audio card device, managed by a USB + * function which provides control and stream interfaces. + */ + +struct gaudio_snd_dev { + struct gaudio *card; + struct file *filp; + struct snd_pcm_substream *substream; + int access; + int format; + int channels; + int rate; +}; + +struct gaudio { + struct usb_function func; + struct usb_gadget *gadget; + + /* ALSA sound device interfaces */ + struct gaudio_snd_dev control; + struct gaudio_snd_dev playback; + struct gaudio_snd_dev capture; + + /* TODO */ +}; + +int gaudio_setup(struct gaudio *card); +void gaudio_cleanup(struct gaudio *card); + +#endif /* __U_AUDIO_H */ diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index 4007770f7ed2..016f63b39028 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -520,7 +520,7 @@ static int eth_start_xmit(struct sk_buff *skb, struct net_device *net) */ if (list_empty(&dev->tx_reqs)) { spin_unlock_irqrestore(&dev->req_lock, flags); - return 1; + return NETDEV_TX_BUSY; } req = container_of(dev->tx_reqs.next, struct usb_request, list); diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index 0a4d99ab40d8..fc6e709f45b1 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -371,6 +371,7 @@ __acquires(&port->port_lock) req->length = len; list_del(&req->list); + req->zero = (gs_buf_data_avail(&port->port_write_buf) == 0); pr_vdebug(PREFIX "%d: tx len=%d, 0x%02x 0x%02x 0x%02x ...\n", port->port_num, len, *((u8 *)req->buf), diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 845479f7c707..1a920c70b5a1 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -17,6 +17,26 @@ config USB_C67X00_HCD To compile this driver as a module, choose M here: the module will be called c67x00. +config USB_XHCI_HCD + tristate "xHCI HCD (USB 3.0) support (EXPERIMENTAL)" + depends on USB && PCI && EXPERIMENTAL + ---help--- + The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0 + "SuperSpeed" host controller hardware. + + To compile this driver as a module, choose M here: the + module will be called xhci-hcd. + +config USB_XHCI_HCD_DEBUGGING + bool "Debugging for the xHCI host controller" + depends on USB_XHCI_HCD + ---help--- + Say 'Y' to turn on debugging for the xHCI host controller driver. + This will spew debugging output, even in interrupt context. + This should only be used for debugging xHCI driver bugs. + + If unsure, say N. + config USB_EHCI_HCD tristate "EHCI HCD (USB 2.0) support" depends on USB && USB_ARCH_HAS_EHCI @@ -161,26 +181,27 @@ config USB_OHCI_HCD_PPC_SOC Enables support for the USB controller on the MPC52xx or STB03xxx processor chip. If unsure, say Y. -config USB_OHCI_HCD_PPC_OF - bool "OHCI support for PPC USB controller on OF platform bus" - depends on USB_OHCI_HCD && PPC_OF - default y - ---help--- - Enables support for the USB controller PowerPC present on the - OpenFirmware platform bus. - config USB_OHCI_HCD_PPC_OF_BE - bool "Support big endian HC" - depends on USB_OHCI_HCD_PPC_OF - default y + bool "OHCI support for OF platform bus (big endian)" + depends on USB_OHCI_HCD && PPC_OF select USB_OHCI_BIG_ENDIAN_DESC select USB_OHCI_BIG_ENDIAN_MMIO + ---help--- + Enables support for big-endian USB controllers present on the + OpenFirmware platform bus. config USB_OHCI_HCD_PPC_OF_LE - bool "Support little endian HC" - depends on USB_OHCI_HCD_PPC_OF - default n + bool "OHCI support for OF platform bus (little endian)" + depends on USB_OHCI_HCD && PPC_OF select USB_OHCI_LITTLE_ENDIAN + ---help--- + Enables support for little-endian USB controllers present on the + OpenFirmware platform bus. + +config USB_OHCI_HCD_PPC_OF + bool + depends on USB_OHCI_HCD && PPC_OF + default USB_OHCI_HCD_PPC_OF_BE || USB_OHCI_HCD_PPC_OF_LE config USB_OHCI_HCD_PCI bool "OHCI support for PCI-bus USB controllers" @@ -317,10 +338,10 @@ config USB_R8A66597_HCD config SUPERH_ON_CHIP_R8A66597 boolean "Enable SuperH on-chip R8A66597 USB" - depends on USB_R8A66597_HCD && (CPU_SUBTYPE_SH7366 || CPU_SUBTYPE_SH7723) + depends on USB_R8A66597_HCD && (CPU_SUBTYPE_SH7366 || CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7724) help This driver enables support for the on-chip R8A66597 in the - SH7366 and SH7723 processors. + SH7366, SH7723 and SH7724 processors. config USB_WHCI_HCD tristate "Wireless USB Host Controller Interface (WHCI) driver (EXPERIMENTAL)" diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index f163571e33d8..289d748bb414 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -12,6 +12,7 @@ fhci-objs := fhci-hcd.o fhci-hub.o fhci-q.o fhci-mem.o \ ifeq ($(CONFIG_FHCI_DEBUG),y) fhci-objs += fhci-dbg.o endif +xhci-objs := xhci-hcd.o xhci-mem.o xhci-pci.o xhci-ring.o xhci-hub.o xhci-dbg.o obj-$(CONFIG_USB_WHCI_HCD) += whci/ @@ -23,6 +24,7 @@ obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o obj-$(CONFIG_USB_FHCI_HCD) += fhci.o +obj-$(CONFIG_USB_XHCI_HCD) += xhci.o obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c index bf69f4739107..59d208d94d4e 100644 --- a/drivers/usb/host/ehci-au1xxx.c +++ b/drivers/usb/host/ehci-au1xxx.c @@ -97,6 +97,7 @@ static const struct hc_driver ehci_au1xxx_hc_driver = { .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, /* * scheduling support @@ -112,6 +113,8 @@ static const struct hc_driver ehci_au1xxx_hc_driver = { .bus_resume = ehci_bus_resume, .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 01c3da34f678..991174937db3 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -309,6 +309,7 @@ static const struct hc_driver ehci_fsl_hc_driver = { .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, /* * scheduling support @@ -324,6 +325,8 @@ static const struct hc_driver ehci_fsl_hc_driver = { .bus_resume = ehci_bus_resume, .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static int ehci_fsl_drv_probe(struct platform_device *pdev) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index c637207a1c80..7d03549c3339 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1003,6 +1003,8 @@ idle_timeout: schedule_timeout_uninterruptible(1); goto rescan; case QH_STATE_IDLE: /* fully unlinked */ + if (qh->clearing_tt) + goto idle_timeout; if (list_empty (&qh->qtd_list)) { qh_put (qh); break; @@ -1024,6 +1026,48 @@ done: return; } +static void +ehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct ehci_qh *qh; + int eptype = usb_endpoint_type(&ep->desc); + int epnum = usb_endpoint_num(&ep->desc); + int is_out = usb_endpoint_dir_out(&ep->desc); + unsigned long flags; + + if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT) + return; + + spin_lock_irqsave(&ehci->lock, flags); + qh = ep->hcpriv; + + /* For Bulk and Interrupt endpoints we maintain the toggle state + * in the hardware; the toggle bits in udev aren't used at all. + * When an endpoint is reset by usb_clear_halt() we must reset + * the toggle bit in the QH. + */ + if (qh) { + usb_settoggle(qh->dev, epnum, is_out, 0); + if (!list_empty(&qh->qtd_list)) { + WARN_ONCE(1, "clear_halt for a busy endpoint\n"); + } else if (qh->qh_state == QH_STATE_LINKED) { + + /* The toggle value in the QH can't be updated + * while the QH is active. Unlink it now; + * re-linking will call qh_refresh(). + */ + if (eptype == USB_ENDPOINT_XFER_BULK) { + unlink_async(ehci, qh); + } else { + intr_deschedule(ehci, qh); + (void) qh_schedule(ehci, qh); + } + } + } + spin_unlock_irqrestore(&ehci->lock, flags); +} + static int ehci_get_frame (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); @@ -1097,7 +1141,7 @@ static int __init ehci_hcd_init(void) sizeof(struct ehci_itd), sizeof(struct ehci_sitd)); #ifdef DEBUG - ehci_debug_root = debugfs_create_dir("ehci", NULL); + ehci_debug_root = debugfs_create_dir("ehci", usb_debug_root); if (!ehci_debug_root) { retval = -ENOENT; goto err_debug; diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 97a53a48a3d8..f46ad27c9a90 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -391,7 +391,7 @@ static inline void create_companion_file(struct ehci_hcd *ehci) /* with integrated TT there is no companion! */ if (!ehci_is_TDI(ehci)) - i = device_create_file(ehci_to_hcd(ehci)->self.dev, + i = device_create_file(ehci_to_hcd(ehci)->self.controller, &dev_attr_companion); } @@ -399,7 +399,7 @@ static inline void remove_companion_file(struct ehci_hcd *ehci) { /* with integrated TT there is no companion! */ if (!ehci_is_TDI(ehci)) - device_remove_file(ehci_to_hcd(ehci)->self.dev, + device_remove_file(ehci_to_hcd(ehci)->self.controller, &dev_attr_companion); } diff --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c index 9c32063a0c2f..89b7c70c6ed6 100644 --- a/drivers/usb/host/ehci-ixp4xx.c +++ b/drivers/usb/host/ehci-ixp4xx.c @@ -51,6 +51,7 @@ static const struct hc_driver ixp4xx_ehci_hc_driver = { .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, .get_frame_number = ehci_get_frame, .hub_status_data = ehci_hub_status_data, .hub_control = ehci_hub_control, @@ -60,6 +61,8 @@ static const struct hc_driver ixp4xx_ehci_hc_driver = { #endif .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static int ixp4xx_ehci_probe(struct platform_device *pdev) diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 9d487908012e..dc2ac613a9d1 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -149,6 +149,7 @@ static const struct hc_driver ehci_orion_hc_driver = { .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, /* * scheduling support @@ -164,6 +165,8 @@ static const struct hc_driver ehci_orion_hc_driver = { .bus_resume = ehci_bus_resume, .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static void __init @@ -187,7 +190,7 @@ ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, } } -static int __init ehci_orion_drv_probe(struct platform_device *pdev) +static int __devinit ehci_orion_drv_probe(struct platform_device *pdev) { struct orion_ehci_data *pd = pdev->dev.platform_data; struct resource *res; diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 5aa8bce90e1f..c2f1b7df918c 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -268,7 +268,7 @@ done: * Also they depend on separate root hub suspend/resume. */ -static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message) +static int ehci_pci_suspend(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); unsigned long flags; @@ -293,12 +293,6 @@ static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message) ehci_writel(ehci, 0, &ehci->regs->intr_enable); (void)ehci_readl(ehci, &ehci->regs->intr_enable); - /* make sure snapshot being resumed re-enumerates everything */ - if (message.event == PM_EVENT_PRETHAW) { - ehci_halt(ehci); - ehci_reset(ehci); - } - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); bail: spin_unlock_irqrestore (&ehci->lock, flags); @@ -309,7 +303,7 @@ static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message) return rc; } -static int ehci_pci_resume(struct usb_hcd *hcd) +static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); @@ -322,10 +316,12 @@ static int ehci_pci_resume(struct usb_hcd *hcd) /* Mark hardware accessible again as we are out of D3 state by now */ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - /* If CF is still set, we maintained PCI Vaux power. + /* If CF is still set and we aren't resuming from hibernation + * then we maintained PCI Vaux power. * Just undo the effect of ehci_pci_suspend(). */ - if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { + if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF && + !hibernated) { int mask = INTR_MASK; if (!hcd->self.root_hub->do_remote_wakeup) @@ -335,7 +331,6 @@ static int ehci_pci_resume(struct usb_hcd *hcd) return 0; } - ehci_dbg(ehci, "lost power, restarting\n"); usb_root_hub_lost_power(hcd->self.root_hub); /* Else reset, to cope with power loss or flush-to-storage @@ -393,6 +388,7 @@ static const struct hc_driver ehci_pci_hc_driver = { .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, /* * scheduling support @@ -408,6 +404,8 @@ static const struct hc_driver ehci_pci_hc_driver = { .bus_resume = ehci_bus_resume, .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; /*-------------------------------------------------------------------------*/ @@ -429,10 +427,11 @@ static struct pci_driver ehci_pci_driver = { .probe = usb_hcd_pci_probe, .remove = usb_hcd_pci_remove, + .shutdown = usb_hcd_pci_shutdown, -#ifdef CONFIG_PM - .suspend = usb_hcd_pci_suspend, - .resume = usb_hcd_pci_resume, +#ifdef CONFIG_PM_SLEEP + .driver = { + .pm = &usb_hcd_pci_pm_ops + }, #endif - .shutdown = usb_hcd_pci_shutdown, }; diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c index ef732b704f53..36f96da129f5 100644 --- a/drivers/usb/host/ehci-ppc-of.c +++ b/drivers/usb/host/ehci-ppc-of.c @@ -61,6 +61,7 @@ static const struct hc_driver ehci_ppc_of_hc_driver = { .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, /* * scheduling support @@ -78,6 +79,8 @@ static const struct hc_driver ehci_ppc_of_hc_driver = { #endif .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c index 1ba9f9a8c308..1dee33b9139e 100644 --- a/drivers/usb/host/ehci-ps3.c +++ b/drivers/usb/host/ehci-ps3.c @@ -65,6 +65,7 @@ static const struct hc_driver ps3_ehci_hc_driver = { .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, .get_frame_number = ehci_get_frame, .hub_status_data = ehci_hub_status_data, .hub_control = ehci_hub_control, @@ -74,9 +75,11 @@ static const struct hc_driver ps3_ehci_hc_driver = { #endif .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; -static int ps3_ehci_probe(struct ps3_system_bus_device *dev) +static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev) { int result; struct usb_hcd *hcd; @@ -162,7 +165,7 @@ static int ps3_ehci_probe(struct ps3_system_bus_device *dev) dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, (unsigned long)virq); - ps3_system_bus_set_driver_data(dev, hcd); + ps3_system_bus_set_drvdata(dev, hcd); result = usb_add_hcd(hcd, virq, IRQF_DISABLED); @@ -195,8 +198,7 @@ fail_start: static int ps3_ehci_remove(struct ps3_system_bus_device *dev) { unsigned int tmp; - struct usb_hcd *hcd = - (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); + struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev); BUG_ON(!hcd); @@ -208,7 +210,7 @@ static int ps3_ehci_remove(struct ps3_system_bus_device *dev) ehci_shutdown(hcd); usb_remove_hcd(hcd); - ps3_system_bus_set_driver_data(dev, NULL); + ps3_system_bus_set_drvdata(dev, NULL); BUG_ON(!hcd->regs); iounmap(hcd->regs); @@ -225,7 +227,7 @@ static int ps3_ehci_remove(struct ps3_system_bus_device *dev) return 0; } -static int ps3_ehci_driver_register(struct ps3_system_bus_driver *drv) +static int __init ps3_ehci_driver_register(struct ps3_system_bus_driver *drv) { return firmware_has_feature(FW_FEATURE_PS3_LV1) ? ps3_system_bus_driver_register(drv) diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 1976b1b3778c..9a1384747f3b 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -139,6 +139,55 @@ qh_refresh (struct ehci_hcd *ehci, struct ehci_qh *qh) /*-------------------------------------------------------------------------*/ +static void qh_link_async(struct ehci_hcd *ehci, struct ehci_qh *qh); + +static void ehci_clear_tt_buffer_complete(struct usb_hcd *hcd, + struct usb_host_endpoint *ep) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct ehci_qh *qh = ep->hcpriv; + unsigned long flags; + + spin_lock_irqsave(&ehci->lock, flags); + qh->clearing_tt = 0; + if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list) + && HC_IS_RUNNING(hcd->state)) + qh_link_async(ehci, qh); + spin_unlock_irqrestore(&ehci->lock, flags); +} + +static void ehci_clear_tt_buffer(struct ehci_hcd *ehci, struct ehci_qh *qh, + struct urb *urb, u32 token) +{ + + /* If an async split transaction gets an error or is unlinked, + * the TT buffer may be left in an indeterminate state. We + * have to clear the TT buffer. + * + * Note: this routine is never called for Isochronous transfers. + */ + if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) { +#ifdef DEBUG + struct usb_device *tt = urb->dev->tt->hub; + dev_dbg(&tt->dev, + "clear tt buffer port %d, a%d ep%d t%08x\n", + urb->dev->ttport, urb->dev->devnum, + usb_pipeendpoint(urb->pipe), token); +#endif /* DEBUG */ + if (!ehci_is_TDI(ehci) + || urb->dev->tt->hub != + ehci_to_hcd(ehci)->self.root_hub) { + if (usb_hub_clear_tt_buffer(urb) == 0) + qh->clearing_tt = 1; + } else { + + /* REVISIT ARC-derived cores don't clear the root + * hub TT buffer in this way... + */ + } + } +} + static int qtd_copy_status ( struct ehci_hcd *ehci, struct urb *urb, @@ -165,6 +214,14 @@ static int qtd_copy_status ( if (token & QTD_STS_BABBLE) { /* FIXME "must" disable babbling device's port too */ status = -EOVERFLOW; + /* CERR nonzero + halt --> stall */ + } else if (QTD_CERR(token)) { + status = -EPIPE; + + /* In theory, more than one of the following bits can be set + * since they are sticky and the transaction is retried. + * Which to test first is rather arbitrary. + */ } else if (token & QTD_STS_MMF) { /* fs/ls interrupt xfer missed the complete-split */ status = -EPROTO; @@ -173,21 +230,15 @@ static int qtd_copy_status ( ? -ENOSR /* hc couldn't read data */ : -ECOMM; /* hc couldn't write data */ } else if (token & QTD_STS_XACT) { - /* timeout, bad crc, wrong PID, etc; retried */ - if (QTD_CERR (token)) - status = -EPIPE; - else { - ehci_dbg (ehci, "devpath %s ep%d%s 3strikes\n", - urb->dev->devpath, - usb_pipeendpoint (urb->pipe), - usb_pipein (urb->pipe) ? "in" : "out"); - status = -EPROTO; - } - /* CERR nonzero + no errors + halt --> stall */ - } else if (QTD_CERR (token)) - status = -EPIPE; - else /* unknown */ + /* timeout, bad CRC, wrong PID, etc */ + ehci_dbg(ehci, "devpath %s ep%d%s 3strikes\n", + urb->dev->devpath, + usb_pipeendpoint(urb->pipe), + usb_pipein(urb->pipe) ? "in" : "out"); + status = -EPROTO; + } else { /* unknown */ status = -EPROTO; + } ehci_vdbg (ehci, "dev%d ep%d%s qtd token %08x --> status %d\n", @@ -195,28 +246,6 @@ static int qtd_copy_status ( usb_pipeendpoint (urb->pipe), usb_pipein (urb->pipe) ? "in" : "out", token, status); - - /* if async CSPLIT failed, try cleaning out the TT buffer */ - if (status != -EPIPE - && urb->dev->tt - && !usb_pipeint(urb->pipe) - && ((token & QTD_STS_MMF) != 0 - || QTD_CERR(token) == 0) - && (!ehci_is_TDI(ehci) - || urb->dev->tt->hub != - ehci_to_hcd(ehci)->self.root_hub)) { -#ifdef DEBUG - struct usb_device *tt = urb->dev->tt->hub; - dev_dbg (&tt->dev, - "clear tt buffer port %d, a%d ep%d t%08x\n", - urb->dev->ttport, urb->dev->devnum, - usb_pipeendpoint (urb->pipe), token); -#endif /* DEBUG */ - /* REVISIT ARC-derived cores don't clear the root - * hub TT buffer in this way... - */ - usb_hub_tt_clear_buffer (urb->dev, urb->pipe); - } } return status; @@ -407,9 +436,16 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh) /* qh unlinked; token in overlay may be most current */ if (state == QH_STATE_IDLE && cpu_to_hc32(ehci, qtd->qtd_dma) - == qh->hw_current) + == qh->hw_current) { token = hc32_to_cpu(ehci, qh->hw_token); + /* An unlink may leave an incomplete + * async transaction in the TT buffer. + * We have to clear it. + */ + ehci_clear_tt_buffer(ehci, qh, urb, token); + } + /* force halt for unlinked or blocked qh, so we'll * patch the qh later and so that completions can't * activate it while we "know" it's stopped. @@ -435,6 +471,13 @@ halt: && (qtd->hw_alt_next & EHCI_LIST_END(ehci))) last_status = -EINPROGRESS; + + /* As part of low/full-speed endpoint-halt processing + * we must clear the TT buffer (11.17.5). + */ + if (unlikely(last_status != -EINPROGRESS && + last_status != -EREMOTEIO)) + ehci_clear_tt_buffer(ehci, qh, urb, token); } /* if we're removing something not at the queue head, @@ -864,6 +907,10 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh) __hc32 dma = QH_NEXT(ehci, qh->qh_dma); struct ehci_qh *head; + /* Don't link a QH if there's a Clear-TT-Buffer pending */ + if (unlikely(qh->clearing_tt)) + return; + /* (re)start the async schedule? */ head = ehci->async; timer_action_done (ehci, TIMER_ASYNC_OFF); diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index 556d0ec0c1f8..74f7f83b29ad 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -760,8 +760,10 @@ static int qh_schedule(struct ehci_hcd *ehci, struct ehci_qh *qh) if (status) { /* "normal" case, uframing flexible except with splits */ if (qh->period) { - frame = qh->period - 1; - do { + int i; + + for (i = qh->period; status && i > 0; --i) { + frame = ++ehci->random_frame % qh->period; for (uframe = 0; uframe < 8; uframe++) { status = check_intr_schedule (ehci, frame, uframe, qh, @@ -769,7 +771,7 @@ static int qh_schedule(struct ehci_hcd *ehci, struct ehci_qh *qh) if (status == 0) break; } - } while (status && frame--); + } /* qh->period == 0 means every uframe */ } else { @@ -1617,11 +1619,14 @@ itd_complete ( desc->status = -EPROTO; /* HC need not update length with this error */ - if (!(t & EHCI_ISOC_BABBLE)) - desc->actual_length = EHCI_ITD_LENGTH (t); + if (!(t & EHCI_ISOC_BABBLE)) { + desc->actual_length = EHCI_ITD_LENGTH(t); + urb->actual_length += desc->actual_length; + } } else if (likely ((t & EHCI_ISOC_ACTIVE) == 0)) { desc->status = 0; - desc->actual_length = EHCI_ITD_LENGTH (t); + desc->actual_length = EHCI_ITD_LENGTH(t); + urb->actual_length += desc->actual_length; } else { /* URB was too late */ desc->status = -EXDEV; @@ -2012,7 +2017,8 @@ sitd_complete ( desc->status = -EPROTO; } else { desc->status = 0; - desc->actual_length = desc->length - SITD_LENGTH (t); + desc->actual_length = desc->length - SITD_LENGTH(t); + urb->actual_length += desc->actual_length; } stream->depth -= stream->interval << 3; diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 6cff195e1a36..2bfff30f4704 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -116,6 +116,7 @@ struct ehci_hcd { /* one per controller */ struct timer_list watchdog; unsigned long actions; unsigned stamp; + unsigned random_frame; unsigned long next_statechange; u32 command; @@ -353,7 +354,9 @@ struct ehci_qh { unsigned short period; /* polling interval */ unsigned short start; /* where polling starts */ #define NO_FRAME ((unsigned short)~0) /* pick new start */ + struct usb_device *dev; /* access to TT */ + unsigned clearing_tt:1; /* Clear-TT-Buf in progress */ } __attribute__ ((aligned (32))); /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c index ea8a4255c5da..e799f86dab11 100644 --- a/drivers/usb/host/fhci-dbg.c +++ b/drivers/usb/host/fhci-dbg.c @@ -108,7 +108,7 @@ void fhci_dfs_create(struct fhci_hcd *fhci) { struct device *dev = fhci_to_hcd(fhci)->self.controller; - fhci->dfs_root = debugfs_create_dir(dev_name(dev), NULL); + fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root); if (!fhci->dfs_root) { WARN_ON(1); return; diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c index bb63b68ddb77..62a226b61670 100644 --- a/drivers/usb/host/fhci-sched.c +++ b/drivers/usb/host/fhci-sched.c @@ -576,9 +576,7 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd) out_be16(&usb->fhci->regs->usb_event, usb->saved_msk); } else if (usb->port_status == FHCI_PORT_DISABLED) { - if (fhci_ioports_check_bus_state(fhci) == 1 && - usb->port_status != FHCI_PORT_LOW && - usb->port_status != FHCI_PORT_FULL) + if (fhci_ioports_check_bus_state(fhci) == 1) fhci_device_connected_interrupt(fhci); } usb_er &= ~USB_E_RESET_MASK; @@ -605,9 +603,7 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd) } if (usb_er & USB_E_IDLE_MASK) { - if (usb->port_status == FHCI_PORT_DISABLED && - usb->port_status != FHCI_PORT_LOW && - usb->port_status != FHCI_PORT_FULL) { + if (usb->port_status == FHCI_PORT_DISABLED) { usb_er &= ~USB_E_RESET_MASK; fhci_device_connected_interrupt(fhci); } else if (usb->port_status == diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c index cbf30e515f29..88b03214622b 100644 --- a/drivers/usb/host/hwa-hc.c +++ b/drivers/usb/host/hwa-hc.c @@ -172,25 +172,6 @@ error_cluster_id_get: } -static int hwahc_op_suspend(struct usb_hcd *usb_hcd, pm_message_t msg) -{ - struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); - struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); - dev_err(wusbhc->dev, "%s (%p [%p], 0x%lx) UNIMPLEMENTED\n", __func__, - usb_hcd, hwahc, *(unsigned long *) &msg); - return -ENOSYS; -} - -static int hwahc_op_resume(struct usb_hcd *usb_hcd) -{ - struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); - struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); - - dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__, - usb_hcd, hwahc); - return -ENOSYS; -} - /* * No need to abort pipes, as when this is called, all the children * has been disconnected and that has done it [through @@ -598,8 +579,6 @@ static struct hc_driver hwahc_hc_driver = { .flags = HCD_USB2, /* FIXME */ .reset = hwahc_op_reset, .start = hwahc_op_start, - .pci_suspend = hwahc_op_suspend, - .pci_resume = hwahc_op_resume, .stop = hwahc_op_stop, .get_frame_number = hwahc_op_get_frame_number, .urb_enqueue = hwahc_op_urb_enqueue, diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index 3fa3a1702796..d4feebfc63bd 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -361,7 +361,7 @@ static int __devexit isp1760_plat_remove(struct platform_device *pdev) static struct platform_driver isp1760_plat_driver = { .probe = isp1760_plat_probe, - .remove = isp1760_plat_remove, + .remove = __devexit_p(isp1760_plat_remove), .driver = { .name = "isp1760", }, diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c index d3269656aa4d..811f5dfdc582 100644 --- a/drivers/usb/host/ohci-dbg.c +++ b/drivers/usb/host/ohci-dbg.c @@ -431,7 +431,7 @@ static struct dentry *ohci_debug_root; struct debug_buffer { ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ - struct device *dev; + struct ohci_hcd *ohci; struct mutex mutex; /* protect filling of buffer */ size_t count; /* number of characters filled into buffer */ char *page; @@ -505,15 +505,11 @@ show_list (struct ohci_hcd *ohci, char *buf, size_t count, struct ed *ed) static ssize_t fill_async_buffer(struct debug_buffer *buf) { - struct usb_bus *bus; - struct usb_hcd *hcd; struct ohci_hcd *ohci; size_t temp; unsigned long flags; - bus = dev_get_drvdata(buf->dev); - hcd = bus_to_hcd(bus); - ohci = hcd_to_ohci(hcd); + ohci = buf->ohci; /* display control and bulk lists together, for simplicity */ spin_lock_irqsave (&ohci->lock, flags); @@ -529,8 +525,6 @@ static ssize_t fill_async_buffer(struct debug_buffer *buf) static ssize_t fill_periodic_buffer(struct debug_buffer *buf) { - struct usb_bus *bus; - struct usb_hcd *hcd; struct ohci_hcd *ohci; struct ed **seen, *ed; unsigned long flags; @@ -542,9 +536,7 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf) return 0; seen_count = 0; - bus = (struct usb_bus *)dev_get_drvdata(buf->dev); - hcd = bus_to_hcd(bus); - ohci = hcd_to_ohci(hcd); + ohci = buf->ohci; next = buf->page; size = PAGE_SIZE; @@ -626,7 +618,6 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf) static ssize_t fill_registers_buffer(struct debug_buffer *buf) { - struct usb_bus *bus; struct usb_hcd *hcd; struct ohci_hcd *ohci; struct ohci_regs __iomem *regs; @@ -635,9 +626,8 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf) char *next; u32 rdata; - bus = (struct usb_bus *)dev_get_drvdata(buf->dev); - hcd = bus_to_hcd(bus); - ohci = hcd_to_ohci(hcd); + ohci = buf->ohci; + hcd = ohci_to_hcd(ohci); regs = ohci->regs; next = buf->page; size = PAGE_SIZE; @@ -710,7 +700,7 @@ done: return PAGE_SIZE - size; } -static struct debug_buffer *alloc_buffer(struct device *dev, +static struct debug_buffer *alloc_buffer(struct ohci_hcd *ohci, ssize_t (*fill_func)(struct debug_buffer *)) { struct debug_buffer *buf; @@ -718,7 +708,7 @@ static struct debug_buffer *alloc_buffer(struct device *dev, buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); if (buf) { - buf->dev = dev; + buf->ohci = ohci; buf->fill_func = fill_func; mutex_init(&buf->mutex); } @@ -810,26 +800,25 @@ static int debug_registers_open(struct inode *inode, struct file *file) static inline void create_debug_files (struct ohci_hcd *ohci) { struct usb_bus *bus = &ohci_to_hcd(ohci)->self; - struct device *dev = bus->dev; ohci->debug_dir = debugfs_create_dir(bus->bus_name, ohci_debug_root); if (!ohci->debug_dir) goto dir_error; ohci->debug_async = debugfs_create_file("async", S_IRUGO, - ohci->debug_dir, dev, + ohci->debug_dir, ohci, &debug_async_fops); if (!ohci->debug_async) goto async_error; ohci->debug_periodic = debugfs_create_file("periodic", S_IRUGO, - ohci->debug_dir, dev, + ohci->debug_dir, ohci, &debug_periodic_fops); if (!ohci->debug_periodic) goto periodic_error; ohci->debug_registers = debugfs_create_file("registers", S_IRUGO, - ohci->debug_dir, dev, + ohci->debug_dir, ohci, &debug_registers_fops); if (!ohci->debug_registers) goto registers_error; diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c index 7cf74f8c2db1..b0dbf4157d29 100644 --- a/drivers/usb/host/ohci-ep93xx.c +++ b/drivers/usb/host/ohci-ep93xx.c @@ -47,7 +47,7 @@ static int usb_hcd_ep93xx_probe(const struct hc_driver *driver, struct usb_hcd *hcd; if (pdev->resource[1].flags != IORESOURCE_IRQ) { - pr_debug("resource[1] is not IORESOURCE_IRQ"); + dbg("resource[1] is not IORESOURCE_IRQ"); return -ENOMEM; } @@ -65,12 +65,18 @@ static int usb_hcd_ep93xx_probe(const struct hc_driver *driver, hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); if (hcd->regs == NULL) { - pr_debug("ioremap failed"); + dbg("ioremap failed"); retval = -ENOMEM; goto err2; } - usb_host_clock = clk_get(&pdev->dev, "usb_host"); + usb_host_clock = clk_get(&pdev->dev, NULL); + if (IS_ERR(usb_host_clock)) { + dbg("clk_get failed"); + retval = PTR_ERR(usb_host_clock); + goto err3; + } + ep93xx_start_hc(&pdev->dev); ohci_hcd_init(hcd_to_ohci(hcd)); @@ -80,6 +86,7 @@ static int usb_hcd_ep93xx_probe(const struct hc_driver *driver, return retval; ep93xx_stop_hc(&pdev->dev); +err3: iounmap(hcd->regs); err2: release_mem_region(hcd->rsrc_start, hcd->rsrc_len); diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 25db704f3a2a..58151687d351 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -571,7 +571,7 @@ static int ohci_init (struct ohci_hcd *ohci) */ static int ohci_run (struct ohci_hcd *ohci) { - u32 mask, temp; + u32 mask, val; int first = ohci->fminterval == 0; struct usb_hcd *hcd = ohci_to_hcd(ohci); @@ -580,8 +580,8 @@ static int ohci_run (struct ohci_hcd *ohci) /* boot firmware should have set this up (5.1.1.3.1) */ if (first) { - temp = ohci_readl (ohci, &ohci->regs->fminterval); - ohci->fminterval = temp & 0x3fff; + val = ohci_readl (ohci, &ohci->regs->fminterval); + ohci->fminterval = val & 0x3fff; if (ohci->fminterval != FI) ohci_dbg (ohci, "fminterval delta %d\n", ohci->fminterval - FI); @@ -600,25 +600,25 @@ static int ohci_run (struct ohci_hcd *ohci) switch (ohci->hc_control & OHCI_CTRL_HCFS) { case OHCI_USB_OPER: - temp = 0; + val = 0; break; case OHCI_USB_SUSPEND: case OHCI_USB_RESUME: ohci->hc_control &= OHCI_CTRL_RWC; ohci->hc_control |= OHCI_USB_RESUME; - temp = 10 /* msec wait */; + val = 10 /* msec wait */; break; // case OHCI_USB_RESET: default: ohci->hc_control &= OHCI_CTRL_RWC; ohci->hc_control |= OHCI_USB_RESET; - temp = 50 /* msec wait */; + val = 50 /* msec wait */; break; } ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); // flush the writes (void) ohci_readl (ohci, &ohci->regs->control); - msleep(temp); + msleep(val); memset (ohci->hcca, 0, sizeof (struct ohci_hcca)); @@ -628,9 +628,9 @@ static int ohci_run (struct ohci_hcd *ohci) retry: /* HC Reset requires max 10 us delay */ ohci_writel (ohci, OHCI_HCR, &ohci->regs->cmdstatus); - temp = 30; /* ... allow extra time */ + val = 30; /* ... allow extra time */ while ((ohci_readl (ohci, &ohci->regs->cmdstatus) & OHCI_HCR) != 0) { - if (--temp == 0) { + if (--val == 0) { spin_unlock_irq (&ohci->lock); ohci_err (ohci, "USB HC reset timed out!\n"); return -1; @@ -699,23 +699,23 @@ retry: ohci_writel (ohci, mask, &ohci->regs->intrenable); /* handle root hub init quirks ... */ - temp = roothub_a (ohci); - temp &= ~(RH_A_PSM | RH_A_OCPM); + val = roothub_a (ohci); + val &= ~(RH_A_PSM | RH_A_OCPM); if (ohci->flags & OHCI_QUIRK_SUPERIO) { /* NSC 87560 and maybe others */ - temp |= RH_A_NOCP; - temp &= ~(RH_A_POTPGT | RH_A_NPS); - ohci_writel (ohci, temp, &ohci->regs->roothub.a); + val |= RH_A_NOCP; + val &= ~(RH_A_POTPGT | RH_A_NPS); + ohci_writel (ohci, val, &ohci->regs->roothub.a); } else if ((ohci->flags & OHCI_QUIRK_AMD756) || (ohci->flags & OHCI_QUIRK_HUB_POWER)) { /* hub power always on; required for AMD-756 and some * Mac platforms. ganged overcurrent reporting, if any. */ - temp |= RH_A_NPS; - ohci_writel (ohci, temp, &ohci->regs->roothub.a); + val |= RH_A_NPS; + ohci_writel (ohci, val, &ohci->regs->roothub.a); } ohci_writel (ohci, RH_HS_LPSC, &ohci->regs->roothub.status); - ohci_writel (ohci, (temp & RH_A_NPS) ? 0 : RH_B_PPCM, + ohci_writel (ohci, (val & RH_A_NPS) ? 0 : RH_B_PPCM, &ohci->regs->roothub.b); // flush those writes (void) ohci_readl (ohci, &ohci->regs->control); @@ -724,7 +724,7 @@ retry: spin_unlock_irq (&ohci->lock); // POTPGT delay is bits 24-31, in 2 ms units. - mdelay ((temp >> 23) & 0x1fe); + mdelay ((val >> 23) & 0x1fe); hcd->state = HC_STATE_RUNNING; if (quirk_zfmicro(ohci)) { @@ -1105,7 +1105,7 @@ static int __init ohci_hcd_mod_init(void) set_bit(USB_OHCI_LOADED, &usb_hcds_loaded); #ifdef DEBUG - ohci_debug_root = debugfs_create_dir("ohci", NULL); + ohci_debug_root = debugfs_create_dir("ohci", usb_debug_root); if (!ohci_debug_root) { retval = -ENOENT; goto error_debug; diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index f9961b4c0da3..d2ba04dd785e 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -372,7 +372,7 @@ static int __devinit ohci_pci_start (struct usb_hcd *hcd) #ifdef CONFIG_PM -static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) +static int ohci_pci_suspend(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); unsigned long flags; @@ -394,10 +394,6 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); (void)ohci_readl(ohci, &ohci->regs->intrdisable); - /* make sure snapshot being resumed re-enumerates everything */ - if (message.event == PM_EVENT_PRETHAW) - ohci_usb_reset(ohci); - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); bail: spin_unlock_irqrestore (&ohci->lock, flags); @@ -406,9 +402,14 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) } -static int ohci_pci_resume (struct usb_hcd *hcd) +static int ohci_pci_resume(struct usb_hcd *hcd, bool hibernated) { set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + /* Make sure resume from hibernation re-enumerates everything */ + if (hibernated) + ohci_usb_reset(hcd_to_ohci(hcd)); + ohci_finish_controller_resume(hcd); return 0; } @@ -484,12 +485,11 @@ static struct pci_driver ohci_pci_driver = { .probe = usb_hcd_pci_probe, .remove = usb_hcd_pci_remove, + .shutdown = usb_hcd_pci_shutdown, -#ifdef CONFIG_PM - .suspend = usb_hcd_pci_suspend, - .resume = usb_hcd_pci_resume, +#ifdef CONFIG_PM_SLEEP + .driver = { + .pm = &usb_hcd_pci_pm_ops + }, #endif - - .shutdown = usb_hcd_pci_shutdown, }; - diff --git a/drivers/usb/host/ohci-ps3.c b/drivers/usb/host/ohci-ps3.c index 3d1910317328..700950455f4d 100644 --- a/drivers/usb/host/ohci-ps3.c +++ b/drivers/usb/host/ohci-ps3.c @@ -75,7 +75,7 @@ static const struct hc_driver ps3_ohci_hc_driver = { #endif }; -static int ps3_ohci_probe(struct ps3_system_bus_device *dev) +static int __devinit ps3_ohci_probe(struct ps3_system_bus_device *dev) { int result; struct usb_hcd *hcd; @@ -162,7 +162,7 @@ static int ps3_ohci_probe(struct ps3_system_bus_device *dev) dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, (unsigned long)virq); - ps3_system_bus_set_driver_data(dev, hcd); + ps3_system_bus_set_drvdata(dev, hcd); result = usb_add_hcd(hcd, virq, IRQF_DISABLED); @@ -195,8 +195,7 @@ fail_start: static int ps3_ohci_remove(struct ps3_system_bus_device *dev) { unsigned int tmp; - struct usb_hcd *hcd = - (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); + struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev); BUG_ON(!hcd); @@ -208,7 +207,7 @@ static int ps3_ohci_remove(struct ps3_system_bus_device *dev) ohci_shutdown(hcd); usb_remove_hcd(hcd); - ps3_system_bus_set_driver_data(dev, NULL); + ps3_system_bus_set_drvdata(dev, NULL); BUG_ON(!hcd->regs); iounmap(hcd->regs); @@ -225,7 +224,7 @@ static int ps3_ohci_remove(struct ps3_system_bus_device *dev) return 0; } -static int ps3_ohci_driver_register(struct ps3_system_bus_driver *drv) +static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv) { return firmware_has_feature(FW_FEATURE_PS3_LV1) ? ps3_system_bus_driver_register(drv) diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 033c2846ce59..83b5f9cea85a 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -15,6 +15,7 @@ #include <linux/delay.h> #include <linux/acpi.h> #include "pci-quirks.h" +#include "xhci-ext-caps.h" #define UHCI_USBLEGSUP 0xc0 /* legacy support */ @@ -341,7 +342,127 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev) return; } +/* + * handshake - spin reading a register until handshake completes + * @ptr: address of hc register to be read + * @mask: bits to look at in result of read + * @done: value of those bits when handshake succeeds + * @wait_usec: timeout in microseconds + * @delay_usec: delay in microseconds to wait between polling + * + * Polls a register every delay_usec microseconds. + * Returns 0 when the mask bits have the value done. + * Returns -ETIMEDOUT if this condition is not true after + * wait_usec microseconds have passed. + */ +static int handshake(void __iomem *ptr, u32 mask, u32 done, + int wait_usec, int delay_usec) +{ + u32 result; + + do { + result = readl(ptr); + result &= mask; + if (result == done) + return 0; + udelay(delay_usec); + wait_usec -= delay_usec; + } while (wait_usec > 0); + return -ETIMEDOUT; +} + +/** + * PCI Quirks for xHCI. + * + * Takes care of the handoff between the Pre-OS (i.e. BIOS) and the OS. + * It signals to the BIOS that the OS wants control of the host controller, + * and then waits 5 seconds for the BIOS to hand over control. + * If we timeout, assume the BIOS is broken and take control anyway. + */ +static void __devinit quirk_usb_handoff_xhci(struct pci_dev *pdev) +{ + void __iomem *base; + int ext_cap_offset; + void __iomem *op_reg_base; + u32 val; + int timeout; + + if (!mmio_resource_enabled(pdev, 0)) + return; + + base = ioremap_nocache(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0)); + if (base == NULL) + return; + /* + * Find the Legacy Support Capability register - + * this is optional for xHCI host controllers. + */ + ext_cap_offset = xhci_find_next_cap_offset(base, XHCI_HCC_PARAMS_OFFSET); + do { + if (!ext_cap_offset) + /* We've reached the end of the extended capabilities */ + goto hc_init; + val = readl(base + ext_cap_offset); + if (XHCI_EXT_CAPS_ID(val) == XHCI_EXT_CAPS_LEGACY) + break; + ext_cap_offset = xhci_find_next_cap_offset(base, ext_cap_offset); + } while (1); + + /* If the BIOS owns the HC, signal that the OS wants it, and wait */ + if (val & XHCI_HC_BIOS_OWNED) { + writel(val & XHCI_HC_OS_OWNED, base + ext_cap_offset); + + /* Wait for 5 seconds with 10 microsecond polling interval */ + timeout = handshake(base + ext_cap_offset, XHCI_HC_BIOS_OWNED, + 0, 5000, 10); + + /* Assume a buggy BIOS and take HC ownership anyway */ + if (timeout) { + dev_warn(&pdev->dev, "xHCI BIOS handoff failed" + " (BIOS bug ?) %08x\n", val); + writel(val & ~XHCI_HC_BIOS_OWNED, base + ext_cap_offset); + } + } + + /* Disable any BIOS SMIs */ + writel(XHCI_LEGACY_DISABLE_SMI, + base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); + +hc_init: + op_reg_base = base + XHCI_HC_LENGTH(readl(base)); + + /* Wait for the host controller to be ready before writing any + * operational or runtime registers. Wait 5 seconds and no more. + */ + timeout = handshake(op_reg_base + XHCI_STS_OFFSET, XHCI_STS_CNR, 0, + 5000, 10); + /* Assume a buggy HC and start HC initialization anyway */ + if (timeout) { + val = readl(op_reg_base + XHCI_STS_OFFSET); + dev_warn(&pdev->dev, + "xHCI HW not ready after 5 sec (HC bug?) " + "status = 0x%x\n", val); + } + + /* Send the halt and disable interrupts command */ + val = readl(op_reg_base + XHCI_CMD_OFFSET); + val &= ~(XHCI_CMD_RUN | XHCI_IRQS); + writel(val, op_reg_base + XHCI_CMD_OFFSET); + + /* Wait for the HC to halt - poll every 125 usec (one microframe). */ + timeout = handshake(op_reg_base + XHCI_STS_OFFSET, XHCI_STS_HALT, 1, + XHCI_MAX_HALT_USEC, 125); + if (timeout) { + val = readl(op_reg_base + XHCI_STS_OFFSET); + dev_warn(&pdev->dev, + "xHCI HW did not halt within %d usec " + "status = 0x%x\n", XHCI_MAX_HALT_USEC, val); + } + + iounmap(base); +} static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev) { @@ -351,5 +472,7 @@ static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev) quirk_usb_handoff_ohci(pdev); else if (pdev->class == PCI_CLASS_SERIAL_USB_EHCI) quirk_usb_disable_ehci(pdev); + else if (pdev->class == PCI_CLASS_SERIAL_USB_XHCI) + quirk_usb_handoff_xhci(pdev); } DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff); diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index f1626e58c141..e18f74946e68 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -26,7 +26,6 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> -#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/timer.h> @@ -46,31 +45,10 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yoshihiro Shimoda"); MODULE_ALIAS("platform:r8a66597_hcd"); -#define DRIVER_VERSION "10 Apr 2008" +#define DRIVER_VERSION "2009-05-26" static const char hcd_name[] = "r8a66597_hcd"; -/* module parameters */ -#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597) -static unsigned short clock = XTAL12; -module_param(clock, ushort, 0644); -MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 " - "(default=0)"); -#endif - -static unsigned short vif = LDRV; -module_param(vif, ushort, 0644); -MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)"); - -static unsigned short endian; -module_param(endian, ushort, 0644); -MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)"); - -static unsigned short irq_sense = 0xff; -module_param(irq_sense, ushort, 0644); -MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 " - "(default=32)"); - static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); static int r8a66597_get_frame(struct usb_hcd *hcd); @@ -136,7 +114,8 @@ static int r8a66597_clock_enable(struct r8a66597 *r8a66597) } } while ((tmp & USBE) != USBE); r8a66597_bclr(r8a66597, USBE, SYSCFG0); - r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0); + r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), XTAL, + SYSCFG0); i = 0; r8a66597_bset(r8a66597, XCKE, SYSCFG0); @@ -203,6 +182,9 @@ static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) static int enable_controller(struct r8a66597 *r8a66597) { int ret, port; + u16 vif = r8a66597->pdata->vif ? LDRV : 0; + u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; + u16 endian = r8a66597->pdata->endian ? BIGEND : 0; ret = r8a66597_clock_enable(r8a66597); if (ret < 0) @@ -2373,7 +2355,7 @@ static int __init_or_module r8a66597_remove(struct platform_device *pdev) return 0; } -static int __init r8a66597_probe(struct platform_device *pdev) +static int __devinit r8a66597_probe(struct platform_device *pdev) { #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK) char clk_name[8]; @@ -2418,6 +2400,12 @@ static int __init r8a66597_probe(struct platform_device *pdev) goto clean_up; } + if (pdev->dev.platform_data == NULL) { + dev_err(&pdev->dev, "no platform data\n"); + ret = -ENODEV; + goto clean_up; + } + /* initialize hcd */ hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); if (!hcd) { @@ -2428,6 +2416,8 @@ static int __init r8a66597_probe(struct platform_device *pdev) r8a66597 = hcd_to_r8a66597(hcd); memset(r8a66597, 0, sizeof(struct r8a66597)); dev_set_drvdata(&pdev->dev, r8a66597); + r8a66597->pdata = pdev->dev.platform_data; + r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK) snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); @@ -2458,29 +2448,6 @@ static int __init r8a66597_probe(struct platform_device *pdev) hcd->rsrc_start = res->start; - /* irq_sense setting on cmdline takes precedence over resource - * settings, so the introduction of irqflags in IRQ resourse - * won't disturb existing setups */ - switch (irq_sense) { - case INTL: - irq_trigger = IRQF_TRIGGER_LOW; - break; - case 0: - irq_trigger = IRQF_TRIGGER_FALLING; - break; - case 0xff: - if (irq_trigger) - irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ? - INTL : 0; - else { - irq_sense = INTL; - irq_trigger = IRQF_TRIGGER_LOW; - } - break; - default: - dev_err(&pdev->dev, "Unknown irq_sense value.\n"); - } - ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger); if (ret != 0) { dev_err(&pdev->dev, "Failed to add hcd\n"); diff --git a/drivers/usb/host/r8a66597.h b/drivers/usb/host/r8a66597.h index f49208f1bb74..d72680b433f9 100644 --- a/drivers/usb/host/r8a66597.h +++ b/drivers/usb/host/r8a66597.h @@ -30,6 +30,8 @@ #include <linux/clk.h> #endif +#include <linux/usb/r8a66597.h> + #define SYSCFG0 0x00 #define SYSCFG1 0x02 #define SYSSTS0 0x04 @@ -488,6 +490,7 @@ struct r8a66597 { #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK) struct clk *clk; #endif + struct r8a66597_platdata *pdata; struct r8a66597_device device0; struct r8a66597_root_hub root_hub[R8A66597_MAX_ROOT_HUB]; struct list_head pipe_queue[R8A66597_MAX_NUM_PIPE]; @@ -506,6 +509,7 @@ struct r8a66597 { unsigned long child_connect_map[4]; unsigned bus_suspended:1; + unsigned irq_sense_low:1; }; static inline struct r8a66597 *hcd_to_r8a66597(struct usb_hcd *hcd) @@ -660,10 +664,36 @@ static inline void r8a66597_port_power(struct r8a66597 *r8a66597, int port, { unsigned long dvstctr_reg = get_dvstctr_reg(port); - if (power) - r8a66597_bset(r8a66597, VBOUT, dvstctr_reg); - else - r8a66597_bclr(r8a66597, VBOUT, dvstctr_reg); + if (r8a66597->pdata->port_power) { + r8a66597->pdata->port_power(port, power); + } else { + if (power) + r8a66597_bset(r8a66597, VBOUT, dvstctr_reg); + else + r8a66597_bclr(r8a66597, VBOUT, dvstctr_reg); + } +} + +static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata) +{ + u16 clock = 0; + + switch (pdata->xtal) { + case R8A66597_PLATDATA_XTAL_12MHZ: + clock = XTAL12; + break; + case R8A66597_PLATDATA_XTAL_24MHZ: + clock = XTAL24; + break; + case R8A66597_PLATDATA_XTAL_48MHZ: + clock = XTAL48; + break; + default: + printk(KERN_ERR "r8a66597: platdata clock is wrong.\n"); + break; + } + + return clock; } #define get_pipectr_addr(pipenum) (PIPE1CTR + (pipenum - 1) * 2) diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index cf5e4cf7ea42..274751b4409c 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -769,7 +769,7 @@ static int uhci_rh_resume(struct usb_hcd *hcd) return rc; } -static int uhci_pci_suspend(struct usb_hcd *hcd, pm_message_t message) +static int uhci_pci_suspend(struct usb_hcd *hcd) { struct uhci_hcd *uhci = hcd_to_uhci(hcd); int rc = 0; @@ -795,10 +795,6 @@ static int uhci_pci_suspend(struct usb_hcd *hcd, pm_message_t message) /* FIXME: Enable non-PME# remote wakeup? */ - /* make sure snapshot being resumed re-enumerates everything */ - if (message.event == PM_EVENT_PRETHAW) - uhci_hc_died(uhci); - done_okay: clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); done: @@ -806,7 +802,7 @@ done: return rc; } -static int uhci_pci_resume(struct usb_hcd *hcd) +static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated) { struct uhci_hcd *uhci = hcd_to_uhci(hcd); @@ -820,6 +816,10 @@ static int uhci_pci_resume(struct usb_hcd *hcd) spin_lock_irq(&uhci->lock); + /* Make sure resume from hibernation re-enumerates everything */ + if (hibernated) + uhci_hc_died(uhci); + /* FIXME: Disable non-PME# remote wakeup? */ /* The firmware or a boot kernel may have changed the controller @@ -940,10 +940,11 @@ static struct pci_driver uhci_pci_driver = { .remove = usb_hcd_pci_remove, .shutdown = uhci_shutdown, -#ifdef CONFIG_PM - .suspend = usb_hcd_pci_suspend, - .resume = usb_hcd_pci_resume, -#endif /* PM */ +#ifdef CONFIG_PM_SLEEP + .driver = { + .pm = &usb_hcd_pci_pm_ops + }, +#endif }; static int __init uhci_hcd_init(void) @@ -961,7 +962,7 @@ static int __init uhci_hcd_init(void) errbuf = kmalloc(ERRBUF_LEN, GFP_KERNEL); if (!errbuf) goto errbuf_failed; - uhci_debugfs_root = debugfs_create_dir("uhci", NULL); + uhci_debugfs_root = debugfs_create_dir("uhci", usb_debug_root); if (!uhci_debugfs_root) goto debug_failed; } diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c index 3e5807d14ffb..64e57bfe236b 100644 --- a/drivers/usb/host/uhci-q.c +++ b/drivers/usb/host/uhci-q.c @@ -260,7 +260,7 @@ static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci, INIT_LIST_HEAD(&qh->node); if (udev) { /* Normal QH */ - qh->type = hep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + qh->type = usb_endpoint_type(&hep->desc); if (qh->type != USB_ENDPOINT_XFER_ISOC) { qh->dummy_td = uhci_alloc_td(uhci); if (!qh->dummy_td) { diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c new file mode 100644 index 000000000000..2501c571f855 --- /dev/null +++ b/drivers/usb/host/xhci-dbg.c @@ -0,0 +1,485 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "xhci.h" + +#define XHCI_INIT_VALUE 0x0 + +/* Add verbose debugging later, just print everything for now */ + +void xhci_dbg_regs(struct xhci_hcd *xhci) +{ + u32 temp; + + xhci_dbg(xhci, "// xHCI capability registers at %p:\n", + xhci->cap_regs); + temp = xhci_readl(xhci, &xhci->cap_regs->hc_capbase); + xhci_dbg(xhci, "// @%p = 0x%x (CAPLENGTH AND HCIVERSION)\n", + &xhci->cap_regs->hc_capbase, temp); + xhci_dbg(xhci, "// CAPLENGTH: 0x%x\n", + (unsigned int) HC_LENGTH(temp)); +#if 0 + xhci_dbg(xhci, "// HCIVERSION: 0x%x\n", + (unsigned int) HC_VERSION(temp)); +#endif + + xhci_dbg(xhci, "// xHCI operational registers at %p:\n", xhci->op_regs); + + temp = xhci_readl(xhci, &xhci->cap_regs->run_regs_off); + xhci_dbg(xhci, "// @%p = 0x%x RTSOFF\n", + &xhci->cap_regs->run_regs_off, + (unsigned int) temp & RTSOFF_MASK); + xhci_dbg(xhci, "// xHCI runtime registers at %p:\n", xhci->run_regs); + + temp = xhci_readl(xhci, &xhci->cap_regs->db_off); + xhci_dbg(xhci, "// @%p = 0x%x DBOFF\n", &xhci->cap_regs->db_off, temp); + xhci_dbg(xhci, "// Doorbell array at %p:\n", xhci->dba); +} + +static void xhci_print_cap_regs(struct xhci_hcd *xhci) +{ + u32 temp; + + xhci_dbg(xhci, "xHCI capability registers at %p:\n", xhci->cap_regs); + + temp = xhci_readl(xhci, &xhci->cap_regs->hc_capbase); + xhci_dbg(xhci, "CAPLENGTH AND HCIVERSION 0x%x:\n", + (unsigned int) temp); + xhci_dbg(xhci, "CAPLENGTH: 0x%x\n", + (unsigned int) HC_LENGTH(temp)); + xhci_dbg(xhci, "HCIVERSION: 0x%x\n", + (unsigned int) HC_VERSION(temp)); + + temp = xhci_readl(xhci, &xhci->cap_regs->hcs_params1); + xhci_dbg(xhci, "HCSPARAMS 1: 0x%x\n", + (unsigned int) temp); + xhci_dbg(xhci, " Max device slots: %u\n", + (unsigned int) HCS_MAX_SLOTS(temp)); + xhci_dbg(xhci, " Max interrupters: %u\n", + (unsigned int) HCS_MAX_INTRS(temp)); + xhci_dbg(xhci, " Max ports: %u\n", + (unsigned int) HCS_MAX_PORTS(temp)); + + temp = xhci_readl(xhci, &xhci->cap_regs->hcs_params2); + xhci_dbg(xhci, "HCSPARAMS 2: 0x%x\n", + (unsigned int) temp); + xhci_dbg(xhci, " Isoc scheduling threshold: %u\n", + (unsigned int) HCS_IST(temp)); + xhci_dbg(xhci, " Maximum allowed segments in event ring: %u\n", + (unsigned int) HCS_ERST_MAX(temp)); + + temp = xhci_readl(xhci, &xhci->cap_regs->hcs_params3); + xhci_dbg(xhci, "HCSPARAMS 3 0x%x:\n", + (unsigned int) temp); + xhci_dbg(xhci, " Worst case U1 device exit latency: %u\n", + (unsigned int) HCS_U1_LATENCY(temp)); + xhci_dbg(xhci, " Worst case U2 device exit latency: %u\n", + (unsigned int) HCS_U2_LATENCY(temp)); + + temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params); + xhci_dbg(xhci, "HCC PARAMS 0x%x:\n", (unsigned int) temp); + xhci_dbg(xhci, " HC generates %s bit addresses\n", + HCC_64BIT_ADDR(temp) ? "64" : "32"); + /* FIXME */ + xhci_dbg(xhci, " FIXME: more HCCPARAMS debugging\n"); + + temp = xhci_readl(xhci, &xhci->cap_regs->run_regs_off); + xhci_dbg(xhci, "RTSOFF 0x%x:\n", temp & RTSOFF_MASK); +} + +static void xhci_print_command_reg(struct xhci_hcd *xhci) +{ + u32 temp; + + temp = xhci_readl(xhci, &xhci->op_regs->command); + xhci_dbg(xhci, "USBCMD 0x%x:\n", temp); + xhci_dbg(xhci, " HC is %s\n", + (temp & CMD_RUN) ? "running" : "being stopped"); + xhci_dbg(xhci, " HC has %sfinished hard reset\n", + (temp & CMD_RESET) ? "not " : ""); + xhci_dbg(xhci, " Event Interrupts %s\n", + (temp & CMD_EIE) ? "enabled " : "disabled"); + xhci_dbg(xhci, " Host System Error Interrupts %s\n", + (temp & CMD_EIE) ? "enabled " : "disabled"); + xhci_dbg(xhci, " HC has %sfinished light reset\n", + (temp & CMD_LRESET) ? "not " : ""); +} + +static void xhci_print_status(struct xhci_hcd *xhci) +{ + u32 temp; + + temp = xhci_readl(xhci, &xhci->op_regs->status); + xhci_dbg(xhci, "USBSTS 0x%x:\n", temp); + xhci_dbg(xhci, " Event ring is %sempty\n", + (temp & STS_EINT) ? "not " : ""); + xhci_dbg(xhci, " %sHost System Error\n", + (temp & STS_FATAL) ? "WARNING: " : "No "); + xhci_dbg(xhci, " HC is %s\n", + (temp & STS_HALT) ? "halted" : "running"); +} + +static void xhci_print_op_regs(struct xhci_hcd *xhci) +{ + xhci_dbg(xhci, "xHCI operational registers at %p:\n", xhci->op_regs); + xhci_print_command_reg(xhci); + xhci_print_status(xhci); +} + +static void xhci_print_ports(struct xhci_hcd *xhci) +{ + u32 __iomem *addr; + int i, j; + int ports; + char *names[NUM_PORT_REGS] = { + "status", + "power", + "link", + "reserved", + }; + + ports = HCS_MAX_PORTS(xhci->hcs_params1); + addr = &xhci->op_regs->port_status_base; + for (i = 0; i < ports; i++) { + for (j = 0; j < NUM_PORT_REGS; ++j) { + xhci_dbg(xhci, "%p port %s reg = 0x%x\n", + addr, names[j], + (unsigned int) xhci_readl(xhci, addr)); + addr++; + } + } +} + +void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num) +{ + void *addr; + u32 temp; + + addr = &ir_set->irq_pending; + temp = xhci_readl(xhci, addr); + if (temp == XHCI_INIT_VALUE) + return; + + xhci_dbg(xhci, " %p: ir_set[%i]\n", ir_set, set_num); + + xhci_dbg(xhci, " %p: ir_set.pending = 0x%x\n", addr, + (unsigned int)temp); + + addr = &ir_set->irq_control; + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, " %p: ir_set.control = 0x%x\n", addr, + (unsigned int)temp); + + addr = &ir_set->erst_size; + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, " %p: ir_set.erst_size = 0x%x\n", addr, + (unsigned int)temp); + + addr = &ir_set->rsvd; + temp = xhci_readl(xhci, addr); + if (temp != XHCI_INIT_VALUE) + xhci_dbg(xhci, " WARN: %p: ir_set.rsvd = 0x%x\n", + addr, (unsigned int)temp); + + addr = &ir_set->erst_base[0]; + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, " %p: ir_set.erst_base[0] = 0x%x\n", + addr, (unsigned int) temp); + + addr = &ir_set->erst_base[1]; + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, " %p: ir_set.erst_base[1] = 0x%x\n", + addr, (unsigned int) temp); + + addr = &ir_set->erst_dequeue[0]; + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, " %p: ir_set.erst_dequeue[0] = 0x%x\n", + addr, (unsigned int) temp); + + addr = &ir_set->erst_dequeue[1]; + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, " %p: ir_set.erst_dequeue[1] = 0x%x\n", + addr, (unsigned int) temp); +} + +void xhci_print_run_regs(struct xhci_hcd *xhci) +{ + u32 temp; + int i; + + xhci_dbg(xhci, "xHCI runtime registers at %p:\n", xhci->run_regs); + temp = xhci_readl(xhci, &xhci->run_regs->microframe_index); + xhci_dbg(xhci, " %p: Microframe index = 0x%x\n", + &xhci->run_regs->microframe_index, + (unsigned int) temp); + for (i = 0; i < 7; ++i) { + temp = xhci_readl(xhci, &xhci->run_regs->rsvd[i]); + if (temp != XHCI_INIT_VALUE) + xhci_dbg(xhci, " WARN: %p: Rsvd[%i] = 0x%x\n", + &xhci->run_regs->rsvd[i], + i, (unsigned int) temp); + } +} + +void xhci_print_registers(struct xhci_hcd *xhci) +{ + xhci_print_cap_regs(xhci); + xhci_print_op_regs(xhci); + xhci_print_ports(xhci); +} + +void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb) +{ + int i; + for (i = 0; i < 4; ++i) + xhci_dbg(xhci, "Offset 0x%x = 0x%x\n", + i*4, trb->generic.field[i]); +} + +/** + * Debug a transfer request block (TRB). + */ +void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb) +{ + u64 address; + u32 type = xhci_readl(xhci, &trb->link.control) & TRB_TYPE_BITMASK; + + switch (type) { + case TRB_TYPE(TRB_LINK): + xhci_dbg(xhci, "Link TRB:\n"); + xhci_print_trb_offsets(xhci, trb); + + address = trb->link.segment_ptr[0] + + (((u64) trb->link.segment_ptr[1]) << 32); + xhci_dbg(xhci, "Next ring segment DMA address = 0x%llx\n", address); + + xhci_dbg(xhci, "Interrupter target = 0x%x\n", + GET_INTR_TARGET(trb->link.intr_target)); + xhci_dbg(xhci, "Cycle bit = %u\n", + (unsigned int) (trb->link.control & TRB_CYCLE)); + xhci_dbg(xhci, "Toggle cycle bit = %u\n", + (unsigned int) (trb->link.control & LINK_TOGGLE)); + xhci_dbg(xhci, "No Snoop bit = %u\n", + (unsigned int) (trb->link.control & TRB_NO_SNOOP)); + break; + case TRB_TYPE(TRB_TRANSFER): + address = trb->trans_event.buffer[0] + + (((u64) trb->trans_event.buffer[1]) << 32); + /* + * FIXME: look at flags to figure out if it's an address or if + * the data is directly in the buffer field. + */ + xhci_dbg(xhci, "DMA address or buffer contents= %llu\n", address); + break; + case TRB_TYPE(TRB_COMPLETION): + address = trb->event_cmd.cmd_trb[0] + + (((u64) trb->event_cmd.cmd_trb[1]) << 32); + xhci_dbg(xhci, "Command TRB pointer = %llu\n", address); + xhci_dbg(xhci, "Completion status = %u\n", + (unsigned int) GET_COMP_CODE(trb->event_cmd.status)); + xhci_dbg(xhci, "Flags = 0x%x\n", (unsigned int) trb->event_cmd.flags); + break; + default: + xhci_dbg(xhci, "Unknown TRB with TRB type ID %u\n", + (unsigned int) type>>10); + xhci_print_trb_offsets(xhci, trb); + break; + } +} + +/** + * Debug a segment with an xHCI ring. + * + * @return The Link TRB of the segment, or NULL if there is no Link TRB + * (which is a bug, since all segments must have a Link TRB). + * + * Prints out all TRBs in the segment, even those after the Link TRB. + * + * XXX: should we print out TRBs that the HC owns? As long as we don't + * write, that should be fine... We shouldn't expect that the memory pointed to + * by the TRB is valid at all. Do we care about ones the HC owns? Probably, + * for HC debugging. + */ +void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg) +{ + int i; + u32 addr = (u32) seg->dma; + union xhci_trb *trb = seg->trbs; + + for (i = 0; i < TRBS_PER_SEGMENT; ++i) { + trb = &seg->trbs[i]; + xhci_dbg(xhci, "@%08x %08x %08x %08x %08x\n", addr, + (unsigned int) trb->link.segment_ptr[0], + (unsigned int) trb->link.segment_ptr[1], + (unsigned int) trb->link.intr_target, + (unsigned int) trb->link.control); + addr += sizeof(*trb); + } +} + +void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring) +{ + xhci_dbg(xhci, "Ring deq = %p (virt), 0x%llx (dma)\n", + ring->dequeue, + (unsigned long long)xhci_trb_virt_to_dma(ring->deq_seg, + ring->dequeue)); + xhci_dbg(xhci, "Ring deq updated %u times\n", + ring->deq_updates); + xhci_dbg(xhci, "Ring enq = %p (virt), 0x%llx (dma)\n", + ring->enqueue, + (unsigned long long)xhci_trb_virt_to_dma(ring->enq_seg, + ring->enqueue)); + xhci_dbg(xhci, "Ring enq updated %u times\n", + ring->enq_updates); +} + +/** + * Debugging for an xHCI ring, which is a queue broken into multiple segments. + * + * Print out each segment in the ring. Check that the DMA address in + * each link segment actually matches the segment's stored DMA address. + * Check that the link end bit is only set at the end of the ring. + * Check that the dequeue and enqueue pointers point to real data in this ring + * (not some other ring). + */ +void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring) +{ + /* FIXME: Throw an error if any segment doesn't have a Link TRB */ + struct xhci_segment *seg; + struct xhci_segment *first_seg = ring->first_seg; + xhci_debug_segment(xhci, first_seg); + + if (!ring->enq_updates && !ring->deq_updates) { + xhci_dbg(xhci, " Ring has not been updated\n"); + return; + } + for (seg = first_seg->next; seg != first_seg; seg = seg->next) + xhci_debug_segment(xhci, seg); +} + +void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst) +{ + u32 addr = (u32) erst->erst_dma_addr; + int i; + struct xhci_erst_entry *entry; + + for (i = 0; i < erst->num_entries; ++i) { + entry = &erst->entries[i]; + xhci_dbg(xhci, "@%08x %08x %08x %08x %08x\n", + (unsigned int) addr, + (unsigned int) entry->seg_addr[0], + (unsigned int) entry->seg_addr[1], + (unsigned int) entry->seg_size, + (unsigned int) entry->rsvd); + addr += sizeof(*entry); + } +} + +void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci) +{ + u32 val; + + val = xhci_readl(xhci, &xhci->op_regs->cmd_ring[0]); + xhci_dbg(xhci, "// xHC command ring deq ptr low bits + flags = 0x%x\n", val); + val = xhci_readl(xhci, &xhci->op_regs->cmd_ring[1]); + xhci_dbg(xhci, "// xHC command ring deq ptr high bits = 0x%x\n", val); +} + +void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_device_control *ctx, dma_addr_t dma, unsigned int last_ep) +{ + int i, j; + int last_ep_ctx = 31; + /* Fields are 32 bits wide, DMA addresses are in bytes */ + int field_size = 32 / 8; + + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - drop flags\n", + &ctx->drop_flags, (unsigned long long)dma, + ctx->drop_flags); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - add flags\n", + &ctx->add_flags, (unsigned long long)dma, + ctx->add_flags); + dma += field_size; + for (i = 0; i > 6; ++i) { + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n", + &ctx->rsvd[i], (unsigned long long)dma, + ctx->rsvd[i], i); + dma += field_size; + } + + xhci_dbg(xhci, "Slot Context:\n"); + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_info\n", + &ctx->slot.dev_info, + (unsigned long long)dma, ctx->slot.dev_info); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_info2\n", + &ctx->slot.dev_info2, + (unsigned long long)dma, ctx->slot.dev_info2); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - tt_info\n", + &ctx->slot.tt_info, + (unsigned long long)dma, ctx->slot.tt_info); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_state\n", + &ctx->slot.dev_state, + (unsigned long long)dma, ctx->slot.dev_state); + dma += field_size; + for (i = 0; i > 4; ++i) { + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n", + &ctx->slot.reserved[i], (unsigned long long)dma, + ctx->slot.reserved[i], i); + dma += field_size; + } + + if (last_ep < 31) + last_ep_ctx = last_ep + 1; + for (i = 0; i < last_ep_ctx; ++i) { + xhci_dbg(xhci, "Endpoint %02d Context:\n", i); + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - ep_info\n", + &ctx->ep[i].ep_info, + (unsigned long long)dma, ctx->ep[i].ep_info); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - ep_info2\n", + &ctx->ep[i].ep_info2, + (unsigned long long)dma, ctx->ep[i].ep_info2); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - deq[0]\n", + &ctx->ep[i].deq[0], + (unsigned long long)dma, ctx->ep[i].deq[0]); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - deq[1]\n", + &ctx->ep[i].deq[1], + (unsigned long long)dma, ctx->ep[i].deq[1]); + dma += field_size; + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - tx_info\n", + &ctx->ep[i].tx_info, + (unsigned long long)dma, ctx->ep[i].tx_info); + dma += field_size; + for (j = 0; j < 3; ++j) { + xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n", + &ctx->ep[i].reserved[j], + (unsigned long long)dma, + ctx->ep[i].reserved[j], j); + dma += field_size; + } + } +} diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h new file mode 100644 index 000000000000..ecc131c3fe33 --- /dev/null +++ b/drivers/usb/host/xhci-ext-caps.h @@ -0,0 +1,145 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +/* Up to 16 microframes to halt an HC - one microframe is 125 microsectonds */ +#define XHCI_MAX_HALT_USEC (16*125) +/* HC not running - set to 1 when run/stop bit is cleared. */ +#define XHCI_STS_HALT (1<<0) + +/* HCCPARAMS offset from PCI base address */ +#define XHCI_HCC_PARAMS_OFFSET 0x10 +/* HCCPARAMS contains the first extended capability pointer */ +#define XHCI_HCC_EXT_CAPS(p) (((p)>>16)&0xffff) + +/* Command and Status registers offset from the Operational Registers address */ +#define XHCI_CMD_OFFSET 0x00 +#define XHCI_STS_OFFSET 0x04 + +#define XHCI_MAX_EXT_CAPS 50 + +/* Capability Register */ +/* bits 7:0 - how long is the Capabilities register */ +#define XHCI_HC_LENGTH(p) (((p)>>00)&0x00ff) + +/* Extended capability register fields */ +#define XHCI_EXT_CAPS_ID(p) (((p)>>0)&0xff) +#define XHCI_EXT_CAPS_NEXT(p) (((p)>>8)&0xff) +#define XHCI_EXT_CAPS_VAL(p) ((p)>>16) +/* Extended capability IDs - ID 0 reserved */ +#define XHCI_EXT_CAPS_LEGACY 1 +#define XHCI_EXT_CAPS_PROTOCOL 2 +#define XHCI_EXT_CAPS_PM 3 +#define XHCI_EXT_CAPS_VIRT 4 +#define XHCI_EXT_CAPS_ROUTE 5 +/* IDs 6-9 reserved */ +#define XHCI_EXT_CAPS_DEBUG 10 +/* USB Legacy Support Capability - section 7.1.1 */ +#define XHCI_HC_BIOS_OWNED (1 << 16) +#define XHCI_HC_OS_OWNED (1 << 24) + +/* USB Legacy Support Capability - section 7.1.1 */ +/* Add this offset, plus the value of xECP in HCCPARAMS to the base address */ +#define XHCI_LEGACY_SUPPORT_OFFSET (0x00) + +/* USB Legacy Support Control and Status Register - section 7.1.2 */ +/* Add this offset, plus the value of xECP in HCCPARAMS to the base address */ +#define XHCI_LEGACY_CONTROL_OFFSET (0x04) +/* bits 1:2, 5:12, and 17:19 need to be preserved; bits 21:28 should be zero */ +#define XHCI_LEGACY_DISABLE_SMI ((0x3 << 1) + (0xff << 5) + (0x7 << 17)) + +/* command register values to disable interrupts and halt the HC */ +/* start/stop HC execution - do not write unless HC is halted*/ +#define XHCI_CMD_RUN (1 << 0) +/* Event Interrupt Enable - get irq when EINT bit is set in USBSTS register */ +#define XHCI_CMD_EIE (1 << 2) +/* Host System Error Interrupt Enable - get irq when HSEIE bit set in USBSTS */ +#define XHCI_CMD_HSEIE (1 << 3) +/* Enable Wrap Event - '1' means xHC generates an event when MFINDEX wraps. */ +#define XHCI_CMD_EWE (1 << 10) + +#define XHCI_IRQS (XHCI_CMD_EIE | XHCI_CMD_HSEIE | XHCI_CMD_EWE) + +/* true: Controller Not Ready to accept doorbell or op reg writes after reset */ +#define XHCI_STS_CNR (1 << 11) + +#include <linux/io.h> + +/** + * Return the next extended capability pointer register. + * + * @base PCI register base address. + * + * @ext_offset Offset of the 32-bit register that contains the extended + * capabilites pointer. If searching for the first extended capability, pass + * in XHCI_HCC_PARAMS_OFFSET. If searching for the next extended capability, + * pass in the offset of the current extended capability register. + * + * Returns 0 if there is no next extended capability register or returns the register offset + * from the PCI registers base address. + */ +static inline int xhci_find_next_cap_offset(void __iomem *base, int ext_offset) +{ + u32 next; + + next = readl(base + ext_offset); + + if (ext_offset == XHCI_HCC_PARAMS_OFFSET) + /* Find the first extended capability */ + next = XHCI_HCC_EXT_CAPS(next); + else + /* Find the next extended capability */ + next = XHCI_EXT_CAPS_NEXT(next); + if (!next) + return 0; + /* + * Address calculation from offset of extended capabilities + * (or HCCPARAMS) register - see section 5.3.6 and section 7. + */ + return ext_offset + (next << 2); +} + +/** + * Find the offset of the extended capabilities with capability ID id. + * + * @base PCI MMIO registers base address. + * @ext_offset Offset from base of the first extended capability to look at, + * or the address of HCCPARAMS. + * @id Extended capability ID to search for. + * + * This uses an arbitrary limit of XHCI_MAX_EXT_CAPS extended capabilities + * to make sure that the list doesn't contain a loop. + */ +static inline int xhci_find_ext_cap_by_id(void __iomem *base, int ext_offset, int id) +{ + u32 val; + int limit = XHCI_MAX_EXT_CAPS; + + while (ext_offset && limit > 0) { + val = readl(base + ext_offset); + if (XHCI_EXT_CAPS_ID(val) == id) + break; + ext_offset = xhci_find_next_cap_offset(base, ext_offset); + limit--; + } + if (limit > 0) + return ext_offset; + return 0; +} diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c new file mode 100644 index 000000000000..dba3e07ccd09 --- /dev/null +++ b/drivers/usb/host/xhci-hcd.c @@ -0,0 +1,1274 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/irq.h> +#include <linux/module.h> + +#include "xhci.h" + +#define DRIVER_AUTHOR "Sarah Sharp" +#define DRIVER_DESC "'eXtensible' Host Controller (xHC) Driver" + +/* TODO: copied from ehci-hcd.c - can this be refactored? */ +/* + * handshake - spin reading hc until handshake completes or fails + * @ptr: address of hc register to be read + * @mask: bits to look at in result of read + * @done: value of those bits when handshake succeeds + * @usec: timeout in microseconds + * + * Returns negative errno, or zero on success + * + * Success happens when the "mask" bits have the specified value (hardware + * handshake done). There are two failure modes: "usec" have passed (major + * hardware flakeout), or the register reads as all-ones (hardware removed). + */ +static int handshake(struct xhci_hcd *xhci, void __iomem *ptr, + u32 mask, u32 done, int usec) +{ + u32 result; + + do { + result = xhci_readl(xhci, ptr); + if (result == ~(u32)0) /* card removed */ + return -ENODEV; + result &= mask; + if (result == done) + return 0; + udelay(1); + usec--; + } while (usec > 0); + return -ETIMEDOUT; +} + +/* + * Force HC into halt state. + * + * Disable any IRQs and clear the run/stop bit. + * HC will complete any current and actively pipelined transactions, and + * should halt within 16 microframes of the run/stop bit being cleared. + * Read HC Halted bit in the status register to see when the HC is finished. + * XXX: shouldn't we set HC_STATE_HALT here somewhere? + */ +int xhci_halt(struct xhci_hcd *xhci) +{ + u32 halted; + u32 cmd; + u32 mask; + + xhci_dbg(xhci, "// Halt the HC\n"); + /* Disable all interrupts from the host controller */ + mask = ~(XHCI_IRQS); + halted = xhci_readl(xhci, &xhci->op_regs->status) & STS_HALT; + if (!halted) + mask &= ~CMD_RUN; + + cmd = xhci_readl(xhci, &xhci->op_regs->command); + cmd &= mask; + xhci_writel(xhci, cmd, &xhci->op_regs->command); + + return handshake(xhci, &xhci->op_regs->status, + STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC); +} + +/* + * Reset a halted HC, and set the internal HC state to HC_STATE_HALT. + * + * This resets pipelines, timers, counters, state machines, etc. + * Transactions will be terminated immediately, and operational registers + * will be set to their defaults. + */ +int xhci_reset(struct xhci_hcd *xhci) +{ + u32 command; + u32 state; + + state = xhci_readl(xhci, &xhci->op_regs->status); + BUG_ON((state & STS_HALT) == 0); + + xhci_dbg(xhci, "// Reset the HC\n"); + command = xhci_readl(xhci, &xhci->op_regs->command); + command |= CMD_RESET; + xhci_writel(xhci, command, &xhci->op_regs->command); + /* XXX: Why does EHCI set this here? Shouldn't other code do this? */ + xhci_to_hcd(xhci)->state = HC_STATE_HALT; + + return handshake(xhci, &xhci->op_regs->command, CMD_RESET, 0, 250 * 1000); +} + +/* + * Stop the HC from processing the endpoint queues. + */ +static void xhci_quiesce(struct xhci_hcd *xhci) +{ + /* + * Queues are per endpoint, so we need to disable an endpoint or slot. + * + * To disable a slot, we need to insert a disable slot command on the + * command ring and ring the doorbell. This will also free any internal + * resources associated with the slot (which might not be what we want). + * + * A Release Endpoint command sounds better - doesn't free internal HC + * memory, but removes the endpoints from the schedule and releases the + * bandwidth, disables the doorbells, and clears the endpoint enable + * flag. Usually used prior to a set interface command. + * + * TODO: Implement after command ring code is done. + */ + BUG_ON(!HC_IS_RUNNING(xhci_to_hcd(xhci)->state)); + xhci_dbg(xhci, "Finished quiescing -- code not written yet\n"); +} + +#if 0 +/* Set up MSI-X table for entry 0 (may claim other entries later) */ +static int xhci_setup_msix(struct xhci_hcd *xhci) +{ + int ret; + struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); + + xhci->msix_count = 0; + /* XXX: did I do this right? ixgbe does kcalloc for more than one */ + xhci->msix_entries = kmalloc(sizeof(struct msix_entry), GFP_KERNEL); + if (!xhci->msix_entries) { + xhci_err(xhci, "Failed to allocate MSI-X entries\n"); + return -ENOMEM; + } + xhci->msix_entries[0].entry = 0; + + ret = pci_enable_msix(pdev, xhci->msix_entries, xhci->msix_count); + if (ret) { + xhci_err(xhci, "Failed to enable MSI-X\n"); + goto free_entries; + } + + /* + * Pass the xhci pointer value as the request_irq "cookie". + * If more irqs are added, this will need to be unique for each one. + */ + ret = request_irq(xhci->msix_entries[0].vector, &xhci_irq, 0, + "xHCI", xhci_to_hcd(xhci)); + if (ret) { + xhci_err(xhci, "Failed to allocate MSI-X interrupt\n"); + goto disable_msix; + } + xhci_dbg(xhci, "Finished setting up MSI-X\n"); + return 0; + +disable_msix: + pci_disable_msix(pdev); +free_entries: + kfree(xhci->msix_entries); + xhci->msix_entries = NULL; + return ret; +} + +/* XXX: code duplication; can xhci_setup_msix call this? */ +/* Free any IRQs and disable MSI-X */ +static void xhci_cleanup_msix(struct xhci_hcd *xhci) +{ + struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); + if (!xhci->msix_entries) + return; + + free_irq(xhci->msix_entries[0].vector, xhci); + pci_disable_msix(pdev); + kfree(xhci->msix_entries); + xhci->msix_entries = NULL; + xhci_dbg(xhci, "Finished cleaning up MSI-X\n"); +} +#endif + +/* + * Initialize memory for HCD and xHC (one-time init). + * + * Program the PAGESIZE register, initialize the device context array, create + * device contexts (?), set up a command ring segment (or two?), create event + * ring (one for now). + */ +int xhci_init(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int retval = 0; + + xhci_dbg(xhci, "xhci_init\n"); + spin_lock_init(&xhci->lock); + retval = xhci_mem_init(xhci, GFP_KERNEL); + xhci_dbg(xhci, "Finished xhci_init\n"); + + return retval; +} + +/* + * Called in interrupt context when there might be work + * queued on the event ring + * + * xhci->lock must be held by caller. + */ +static void xhci_work(struct xhci_hcd *xhci) +{ + u32 temp; + + /* + * Clear the op reg interrupt status first, + * so we can receive interrupts from other MSI-X interrupters. + * Write 1 to clear the interrupt status. + */ + temp = xhci_readl(xhci, &xhci->op_regs->status); + temp |= STS_EINT; + xhci_writel(xhci, temp, &xhci->op_regs->status); + /* FIXME when MSI-X is supported and there are multiple vectors */ + /* Clear the MSI-X event interrupt status */ + + /* Acknowledge the interrupt */ + temp = xhci_readl(xhci, &xhci->ir_set->irq_pending); + temp |= 0x3; + xhci_writel(xhci, temp, &xhci->ir_set->irq_pending); + /* Flush posted writes */ + xhci_readl(xhci, &xhci->ir_set->irq_pending); + + /* FIXME this should be a delayed service routine that clears the EHB */ + xhci_handle_event(xhci); + + /* Clear the event handler busy flag; the event ring should be empty. */ + temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]); + xhci_writel(xhci, temp & ~ERST_EHB, &xhci->ir_set->erst_dequeue[0]); + /* Flush posted writes -- FIXME is this necessary? */ + xhci_readl(xhci, &xhci->ir_set->irq_pending); +} + +/*-------------------------------------------------------------------------*/ + +/* + * xHCI spec says we can get an interrupt, and if the HC has an error condition, + * we might get bad data out of the event ring. Section 4.10.2.7 has a list of + * indicators of an event TRB error, but we check the status *first* to be safe. + */ +irqreturn_t xhci_irq(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + u32 temp, temp2; + + spin_lock(&xhci->lock); + /* Check if the xHC generated the interrupt, or the irq is shared */ + temp = xhci_readl(xhci, &xhci->op_regs->status); + temp2 = xhci_readl(xhci, &xhci->ir_set->irq_pending); + if (!(temp & STS_EINT) && !ER_IRQ_PENDING(temp2)) { + spin_unlock(&xhci->lock); + return IRQ_NONE; + } + + if (temp & STS_FATAL) { + xhci_warn(xhci, "WARNING: Host System Error\n"); + xhci_halt(xhci); + xhci_to_hcd(xhci)->state = HC_STATE_HALT; + spin_unlock(&xhci->lock); + return -ESHUTDOWN; + } + + xhci_work(xhci); + spin_unlock(&xhci->lock); + + return IRQ_HANDLED; +} + +#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING +void xhci_event_ring_work(unsigned long arg) +{ + unsigned long flags; + int temp; + struct xhci_hcd *xhci = (struct xhci_hcd *) arg; + int i, j; + + xhci_dbg(xhci, "Poll event ring: %lu\n", jiffies); + + spin_lock_irqsave(&xhci->lock, flags); + temp = xhci_readl(xhci, &xhci->op_regs->status); + xhci_dbg(xhci, "op reg status = 0x%x\n", temp); + temp = xhci_readl(xhci, &xhci->ir_set->irq_pending); + xhci_dbg(xhci, "ir_set 0 pending = 0x%x\n", temp); + xhci_dbg(xhci, "No-op commands handled = %d\n", xhci->noops_handled); + xhci_dbg(xhci, "HC error bitmask = 0x%x\n", xhci->error_bitmask); + xhci->error_bitmask = 0; + xhci_dbg(xhci, "Event ring:\n"); + xhci_debug_segment(xhci, xhci->event_ring->deq_seg); + xhci_dbg_ring_ptrs(xhci, xhci->event_ring); + temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]); + temp &= ERST_PTR_MASK; + xhci_dbg(xhci, "ERST deq = 0x%x\n", temp); + xhci_dbg(xhci, "Command ring:\n"); + xhci_debug_segment(xhci, xhci->cmd_ring->deq_seg); + xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring); + xhci_dbg_cmd_ptrs(xhci); + for (i = 0; i < MAX_HC_SLOTS; ++i) { + if (xhci->devs[i]) { + for (j = 0; j < 31; ++j) { + if (xhci->devs[i]->ep_rings[j]) { + xhci_dbg(xhci, "Dev %d endpoint ring %d:\n", i, j); + xhci_debug_segment(xhci, xhci->devs[i]->ep_rings[j]->deq_seg); + } + } + } + } + + if (xhci->noops_submitted != NUM_TEST_NOOPS) + if (xhci_setup_one_noop(xhci)) + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + + if (!xhci->zombie) + mod_timer(&xhci->event_ring_timer, jiffies + POLL_TIMEOUT * HZ); + else + xhci_dbg(xhci, "Quit polling the event ring.\n"); +} +#endif + +/* + * Start the HC after it was halted. + * + * This function is called by the USB core when the HC driver is added. + * Its opposite is xhci_stop(). + * + * xhci_init() must be called once before this function can be called. + * Reset the HC, enable device slot contexts, program DCBAAP, and + * set command ring pointer and event ring pointer. + * + * Setup MSI-X vectors and enable interrupts. + */ +int xhci_run(struct usb_hcd *hcd) +{ + u32 temp; + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + void (*doorbell)(struct xhci_hcd *) = NULL; + + hcd->uses_new_polling = 1; + hcd->poll_rh = 0; + + xhci_dbg(xhci, "xhci_run\n"); +#if 0 /* FIXME: MSI not setup yet */ + /* Do this at the very last minute */ + ret = xhci_setup_msix(xhci); + if (!ret) + return ret; + + return -ENOSYS; +#endif +#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING + init_timer(&xhci->event_ring_timer); + xhci->event_ring_timer.data = (unsigned long) xhci; + xhci->event_ring_timer.function = xhci_event_ring_work; + /* Poll the event ring */ + xhci->event_ring_timer.expires = jiffies + POLL_TIMEOUT * HZ; + xhci->zombie = 0; + xhci_dbg(xhci, "Setting event ring polling timer\n"); + add_timer(&xhci->event_ring_timer); +#endif + + xhci_dbg(xhci, "// Set the interrupt modulation register\n"); + temp = xhci_readl(xhci, &xhci->ir_set->irq_control); + temp &= ~ER_IRQ_INTERVAL_MASK; + temp |= (u32) 160; + xhci_writel(xhci, temp, &xhci->ir_set->irq_control); + + /* Set the HCD state before we enable the irqs */ + hcd->state = HC_STATE_RUNNING; + temp = xhci_readl(xhci, &xhci->op_regs->command); + temp |= (CMD_EIE); + xhci_dbg(xhci, "// Enable interrupts, cmd = 0x%x.\n", + temp); + xhci_writel(xhci, temp, &xhci->op_regs->command); + + temp = xhci_readl(xhci, &xhci->ir_set->irq_pending); + xhci_dbg(xhci, "// Enabling event ring interrupter %p by writing 0x%x to irq_pending\n", + xhci->ir_set, (unsigned int) ER_IRQ_ENABLE(temp)); + xhci_writel(xhci, ER_IRQ_ENABLE(temp), + &xhci->ir_set->irq_pending); + xhci_print_ir_set(xhci, xhci->ir_set, 0); + + if (NUM_TEST_NOOPS > 0) + doorbell = xhci_setup_one_noop(xhci); + + xhci_dbg(xhci, "Command ring memory map follows:\n"); + xhci_debug_ring(xhci, xhci->cmd_ring); + xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring); + xhci_dbg_cmd_ptrs(xhci); + + xhci_dbg(xhci, "ERST memory map follows:\n"); + xhci_dbg_erst(xhci, &xhci->erst); + xhci_dbg(xhci, "Event ring:\n"); + xhci_debug_ring(xhci, xhci->event_ring); + xhci_dbg_ring_ptrs(xhci, xhci->event_ring); + temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]); + temp &= ERST_PTR_MASK; + xhci_dbg(xhci, "ERST deq = 0x%x\n", temp); + temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[1]); + xhci_dbg(xhci, "ERST deq upper = 0x%x\n", temp); + + temp = xhci_readl(xhci, &xhci->op_regs->command); + temp |= (CMD_RUN); + xhci_dbg(xhci, "// Turn on HC, cmd = 0x%x.\n", + temp); + xhci_writel(xhci, temp, &xhci->op_regs->command); + /* Flush PCI posted writes */ + temp = xhci_readl(xhci, &xhci->op_regs->command); + xhci_dbg(xhci, "// @%p = 0x%x\n", &xhci->op_regs->command, temp); + if (doorbell) + (*doorbell)(xhci); + + xhci_dbg(xhci, "Finished xhci_run\n"); + return 0; +} + +/* + * Stop xHCI driver. + * + * This function is called by the USB core when the HC driver is removed. + * Its opposite is xhci_run(). + * + * Disable device contexts, disable IRQs, and quiesce the HC. + * Reset the HC, finish any completed transactions, and cleanup memory. + */ +void xhci_stop(struct usb_hcd *hcd) +{ + u32 temp; + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + spin_lock_irq(&xhci->lock); + if (HC_IS_RUNNING(hcd->state)) + xhci_quiesce(xhci); + xhci_halt(xhci); + xhci_reset(xhci); + spin_unlock_irq(&xhci->lock); + +#if 0 /* No MSI yet */ + xhci_cleanup_msix(xhci); +#endif +#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING + /* Tell the event ring poll function not to reschedule */ + xhci->zombie = 1; + del_timer_sync(&xhci->event_ring_timer); +#endif + + xhci_dbg(xhci, "// Disabling event ring interrupts\n"); + temp = xhci_readl(xhci, &xhci->op_regs->status); + xhci_writel(xhci, temp & ~STS_EINT, &xhci->op_regs->status); + temp = xhci_readl(xhci, &xhci->ir_set->irq_pending); + xhci_writel(xhci, ER_IRQ_DISABLE(temp), + &xhci->ir_set->irq_pending); + xhci_print_ir_set(xhci, xhci->ir_set, 0); + + xhci_dbg(xhci, "cleaning up memory\n"); + xhci_mem_cleanup(xhci); + xhci_dbg(xhci, "xhci_stop completed - status = %x\n", + xhci_readl(xhci, &xhci->op_regs->status)); +} + +/* + * Shutdown HC (not bus-specific) + * + * This is called when the machine is rebooting or halting. We assume that the + * machine will be powered off, and the HC's internal state will be reset. + * Don't bother to free memory. + */ +void xhci_shutdown(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + spin_lock_irq(&xhci->lock); + xhci_halt(xhci); + spin_unlock_irq(&xhci->lock); + +#if 0 + xhci_cleanup_msix(xhci); +#endif + + xhci_dbg(xhci, "xhci_shutdown completed - status = %x\n", + xhci_readl(xhci, &xhci->op_regs->status)); +} + +/*-------------------------------------------------------------------------*/ + +/** + * xhci_get_endpoint_index - Used for passing endpoint bitmasks between the core and + * HCDs. Find the index for an endpoint given its descriptor. Use the return + * value to right shift 1 for the bitmask. + * + * Index = (epnum * 2) + direction - 1, + * where direction = 0 for OUT, 1 for IN. + * For control endpoints, the IN index is used (OUT index is unused), so + * index = (epnum * 2) + direction - 1 = (epnum * 2) + 1 - 1 = (epnum * 2) + */ +unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc) +{ + unsigned int index; + if (usb_endpoint_xfer_control(desc)) + index = (unsigned int) (usb_endpoint_num(desc)*2); + else + index = (unsigned int) (usb_endpoint_num(desc)*2) + + (usb_endpoint_dir_in(desc) ? 1 : 0) - 1; + return index; +} + +/* Find the flag for this endpoint (for use in the control context). Use the + * endpoint index to create a bitmask. The slot context is bit 0, endpoint 0 is + * bit 1, etc. + */ +unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc) +{ + return 1 << (xhci_get_endpoint_index(desc) + 1); +} + +/* Compute the last valid endpoint context index. Basically, this is the + * endpoint index plus one. For slot contexts with more than valid endpoint, + * we find the most significant bit set in the added contexts flags. + * e.g. ep 1 IN (with epnum 0x81) => added_ctxs = 0b1000 + * fls(0b1000) = 4, but the endpoint context index is 3, so subtract one. + */ +static inline unsigned int xhci_last_valid_endpoint(u32 added_ctxs) +{ + return fls(added_ctxs) - 1; +} + +/* Returns 1 if the arguments are OK; + * returns 0 this is a root hub; returns -EINVAL for NULL pointers. + */ +int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint *ep, int check_ep, const char *func) { + if (!hcd || (check_ep && !ep) || !udev) { + printk(KERN_DEBUG "xHCI %s called with invalid args\n", + func); + return -EINVAL; + } + if (!udev->parent) { + printk(KERN_DEBUG "xHCI %s called for root hub\n", + func); + return 0; + } + if (!udev->slot_id) { + printk(KERN_DEBUG "xHCI %s called with unaddressed device\n", + func); + return -EINVAL; + } + return 1; +} + +/* + * non-error returns are a promise to giveback() the urb later + * we drop ownership so next owner (or urb unlink) can get it + */ +int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + unsigned long flags; + int ret = 0; + unsigned int slot_id, ep_index; + + if (!urb || xhci_check_args(hcd, urb->dev, urb->ep, true, __func__) <= 0) + return -EINVAL; + + slot_id = urb->dev->slot_id; + ep_index = xhci_get_endpoint_index(&urb->ep->desc); + + spin_lock_irqsave(&xhci->lock, flags); + if (!xhci->devs || !xhci->devs[slot_id]) { + if (!in_interrupt()) + dev_warn(&urb->dev->dev, "WARN: urb submitted for dev with no Slot ID\n"); + ret = -EINVAL; + goto exit; + } + if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { + if (!in_interrupt()) + xhci_dbg(xhci, "urb submitted during PCI suspend\n"); + ret = -ESHUTDOWN; + goto exit; + } + if (usb_endpoint_xfer_control(&urb->ep->desc)) + ret = xhci_queue_ctrl_tx(xhci, mem_flags, urb, + slot_id, ep_index); + else if (usb_endpoint_xfer_bulk(&urb->ep->desc)) + ret = xhci_queue_bulk_tx(xhci, mem_flags, urb, + slot_id, ep_index); + else + ret = -EINVAL; +exit: + spin_unlock_irqrestore(&xhci->lock, flags); + return ret; +} + +/* + * Remove the URB's TD from the endpoint ring. This may cause the HC to stop + * USB transfers, potentially stopping in the middle of a TRB buffer. The HC + * should pick up where it left off in the TD, unless a Set Transfer Ring + * Dequeue Pointer is issued. + * + * The TRBs that make up the buffers for the canceled URB will be "removed" from + * the ring. Since the ring is a contiguous structure, they can't be physically + * removed. Instead, there are two options: + * + * 1) If the HC is in the middle of processing the URB to be canceled, we + * simply move the ring's dequeue pointer past those TRBs using the Set + * Transfer Ring Dequeue Pointer command. This will be the common case, + * when drivers timeout on the last submitted URB and attempt to cancel. + * + * 2) If the HC is in the middle of a different TD, we turn the TRBs into a + * series of 1-TRB transfer no-op TDs. (No-ops shouldn't be chained.) The + * HC will need to invalidate the any TRBs it has cached after the stop + * endpoint command, as noted in the xHCI 0.95 errata. + * + * 3) The TD may have completed by the time the Stop Endpoint Command + * completes, so software needs to handle that case too. + * + * This function should protect against the TD enqueueing code ringing the + * doorbell while this code is waiting for a Stop Endpoint command to complete. + * It also needs to account for multiple cancellations on happening at the same + * time for the same endpoint. + * + * Note that this function can be called in any context, or so says + * usb_hcd_unlink_urb() + */ +int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) +{ + unsigned long flags; + int ret; + struct xhci_hcd *xhci; + struct xhci_td *td; + unsigned int ep_index; + struct xhci_ring *ep_ring; + + xhci = hcd_to_xhci(hcd); + spin_lock_irqsave(&xhci->lock, flags); + /* Make sure the URB hasn't completed or been unlinked already */ + ret = usb_hcd_check_unlink_urb(hcd, urb, status); + if (ret || !urb->hcpriv) + goto done; + + xhci_dbg(xhci, "Cancel URB %p\n", urb); + ep_index = xhci_get_endpoint_index(&urb->ep->desc); + ep_ring = xhci->devs[urb->dev->slot_id]->ep_rings[ep_index]; + td = (struct xhci_td *) urb->hcpriv; + + ep_ring->cancels_pending++; + list_add_tail(&td->cancelled_td_list, &ep_ring->cancelled_td_list); + /* Queue a stop endpoint command, but only if this is + * the first cancellation to be handled. + */ + if (ep_ring->cancels_pending == 1) { + xhci_queue_stop_endpoint(xhci, urb->dev->slot_id, ep_index); + xhci_ring_cmd_db(xhci); + } +done: + spin_unlock_irqrestore(&xhci->lock, flags); + return ret; +} + +/* Drop an endpoint from a new bandwidth configuration for this device. + * Only one call to this function is allowed per endpoint before + * check_bandwidth() or reset_bandwidth() must be called. + * A call to xhci_drop_endpoint() followed by a call to xhci_add_endpoint() will + * add the endpoint to the schedule with possibly new parameters denoted by a + * different endpoint descriptor in usb_host_endpoint. + * A call to xhci_add_endpoint() followed by a call to xhci_drop_endpoint() is + * not allowed. + * + * The USB core will not allow URBs to be queued to an endpoint that is being + * disabled, so there's no need for mutual exclusion to protect + * the xhci->devs[slot_id] structure. + */ +int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint *ep) +{ + struct xhci_hcd *xhci; + struct xhci_device_control *in_ctx; + unsigned int last_ctx; + unsigned int ep_index; + struct xhci_ep_ctx *ep_ctx; + u32 drop_flag; + u32 new_add_flags, new_drop_flags, new_slot_info; + int ret; + + ret = xhci_check_args(hcd, udev, ep, 1, __func__); + if (ret <= 0) + return ret; + xhci = hcd_to_xhci(hcd); + xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev); + + drop_flag = xhci_get_endpoint_flag(&ep->desc); + if (drop_flag == SLOT_FLAG || drop_flag == EP0_FLAG) { + xhci_dbg(xhci, "xHCI %s - can't drop slot or ep 0 %#x\n", + __func__, drop_flag); + return 0; + } + + if (!xhci->devs || !xhci->devs[udev->slot_id]) { + xhci_warn(xhci, "xHCI %s called with unaddressed device\n", + __func__); + return -EINVAL; + } + + in_ctx = xhci->devs[udev->slot_id]->in_ctx; + ep_index = xhci_get_endpoint_index(&ep->desc); + ep_ctx = &xhci->devs[udev->slot_id]->out_ctx->ep[ep_index]; + /* If the HC already knows the endpoint is disabled, + * or the HCD has noted it is disabled, ignore this request + */ + if ((ep_ctx->ep_info & EP_STATE_MASK) == EP_STATE_DISABLED || + in_ctx->drop_flags & xhci_get_endpoint_flag(&ep->desc)) { + xhci_warn(xhci, "xHCI %s called with disabled ep %p\n", + __func__, ep); + return 0; + } + + in_ctx->drop_flags |= drop_flag; + new_drop_flags = in_ctx->drop_flags; + + in_ctx->add_flags = ~drop_flag; + new_add_flags = in_ctx->add_flags; + + last_ctx = xhci_last_valid_endpoint(in_ctx->add_flags); + /* Update the last valid endpoint context, if we deleted the last one */ + if ((in_ctx->slot.dev_info & LAST_CTX_MASK) > LAST_CTX(last_ctx)) { + in_ctx->slot.dev_info &= ~LAST_CTX_MASK; + in_ctx->slot.dev_info |= LAST_CTX(last_ctx); + } + new_slot_info = in_ctx->slot.dev_info; + + xhci_endpoint_zero(xhci, xhci->devs[udev->slot_id], ep); + + xhci_dbg(xhci, "drop ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x, new slot info = %#x\n", + (unsigned int) ep->desc.bEndpointAddress, + udev->slot_id, + (unsigned int) new_drop_flags, + (unsigned int) new_add_flags, + (unsigned int) new_slot_info); + return 0; +} + +/* Add an endpoint to a new possible bandwidth configuration for this device. + * Only one call to this function is allowed per endpoint before + * check_bandwidth() or reset_bandwidth() must be called. + * A call to xhci_drop_endpoint() followed by a call to xhci_add_endpoint() will + * add the endpoint to the schedule with possibly new parameters denoted by a + * different endpoint descriptor in usb_host_endpoint. + * A call to xhci_add_endpoint() followed by a call to xhci_drop_endpoint() is + * not allowed. + * + * The USB core will not allow URBs to be queued to an endpoint until the + * configuration or alt setting is installed in the device, so there's no need + * for mutual exclusion to protect the xhci->devs[slot_id] structure. + */ +int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, + struct usb_host_endpoint *ep) +{ + struct xhci_hcd *xhci; + struct xhci_device_control *in_ctx; + unsigned int ep_index; + struct xhci_ep_ctx *ep_ctx; + u32 added_ctxs; + unsigned int last_ctx; + u32 new_add_flags, new_drop_flags, new_slot_info; + int ret = 0; + + ret = xhci_check_args(hcd, udev, ep, 1, __func__); + if (ret <= 0) + return ret; + xhci = hcd_to_xhci(hcd); + + added_ctxs = xhci_get_endpoint_flag(&ep->desc); + last_ctx = xhci_last_valid_endpoint(added_ctxs); + if (added_ctxs == SLOT_FLAG || added_ctxs == EP0_FLAG) { + /* FIXME when we have to issue an evaluate endpoint command to + * deal with ep0 max packet size changing once we get the + * descriptors + */ + xhci_dbg(xhci, "xHCI %s - can't add slot or ep 0 %#x\n", + __func__, added_ctxs); + return 0; + } + + if (!xhci->devs || !xhci->devs[udev->slot_id]) { + xhci_warn(xhci, "xHCI %s called with unaddressed device\n", + __func__); + return -EINVAL; + } + + in_ctx = xhci->devs[udev->slot_id]->in_ctx; + ep_index = xhci_get_endpoint_index(&ep->desc); + ep_ctx = &xhci->devs[udev->slot_id]->out_ctx->ep[ep_index]; + /* If the HCD has already noted the endpoint is enabled, + * ignore this request. + */ + if (in_ctx->add_flags & xhci_get_endpoint_flag(&ep->desc)) { + xhci_warn(xhci, "xHCI %s called with enabled ep %p\n", + __func__, ep); + return 0; + } + + /* + * Configuration and alternate setting changes must be done in + * process context, not interrupt context (or so documenation + * for usb_set_interface() and usb_set_configuration() claim). + */ + if (xhci_endpoint_init(xhci, xhci->devs[udev->slot_id], + udev, ep, GFP_KERNEL) < 0) { + dev_dbg(&udev->dev, "%s - could not initialize ep %#x\n", + __func__, ep->desc.bEndpointAddress); + return -ENOMEM; + } + + in_ctx->add_flags |= added_ctxs; + new_add_flags = in_ctx->add_flags; + + /* If xhci_endpoint_disable() was called for this endpoint, but the + * xHC hasn't been notified yet through the check_bandwidth() call, + * this re-adds a new state for the endpoint from the new endpoint + * descriptors. We must drop and re-add this endpoint, so we leave the + * drop flags alone. + */ + new_drop_flags = in_ctx->drop_flags; + + /* Update the last valid endpoint context, if we just added one past */ + if ((in_ctx->slot.dev_info & LAST_CTX_MASK) < LAST_CTX(last_ctx)) { + in_ctx->slot.dev_info &= ~LAST_CTX_MASK; + in_ctx->slot.dev_info |= LAST_CTX(last_ctx); + } + new_slot_info = in_ctx->slot.dev_info; + + xhci_dbg(xhci, "add ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x, new slot info = %#x\n", + (unsigned int) ep->desc.bEndpointAddress, + udev->slot_id, + (unsigned int) new_drop_flags, + (unsigned int) new_add_flags, + (unsigned int) new_slot_info); + return 0; +} + +static void xhci_zero_in_ctx(struct xhci_virt_device *virt_dev) +{ + struct xhci_ep_ctx *ep_ctx; + int i; + + /* When a device's add flag and drop flag are zero, any subsequent + * configure endpoint command will leave that endpoint's state + * untouched. Make sure we don't leave any old state in the input + * endpoint contexts. + */ + virt_dev->in_ctx->drop_flags = 0; + virt_dev->in_ctx->add_flags = 0; + virt_dev->in_ctx->slot.dev_info &= ~LAST_CTX_MASK; + /* Endpoint 0 is always valid */ + virt_dev->in_ctx->slot.dev_info |= LAST_CTX(1); + for (i = 1; i < 31; ++i) { + ep_ctx = &virt_dev->in_ctx->ep[i]; + ep_ctx->ep_info = 0; + ep_ctx->ep_info2 = 0; + ep_ctx->deq[0] = 0; + ep_ctx->deq[1] = 0; + ep_ctx->tx_info = 0; + } +} + +/* Called after one or more calls to xhci_add_endpoint() or + * xhci_drop_endpoint(). If this call fails, the USB core is expected + * to call xhci_reset_bandwidth(). + * + * Since we are in the middle of changing either configuration or + * installing a new alt setting, the USB core won't allow URBs to be + * enqueued for any endpoint on the old config or interface. Nothing + * else should be touching the xhci->devs[slot_id] structure, so we + * don't need to take the xhci->lock for manipulating that. + */ +int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) +{ + int i; + int ret = 0; + int timeleft; + unsigned long flags; + struct xhci_hcd *xhci; + struct xhci_virt_device *virt_dev; + + ret = xhci_check_args(hcd, udev, NULL, 0, __func__); + if (ret <= 0) + return ret; + xhci = hcd_to_xhci(hcd); + + if (!udev->slot_id || !xhci->devs || !xhci->devs[udev->slot_id]) { + xhci_warn(xhci, "xHCI %s called with unaddressed device\n", + __func__); + return -EINVAL; + } + xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev); + virt_dev = xhci->devs[udev->slot_id]; + + /* See section 4.6.6 - A0 = 1; A1 = D0 = D1 = 0 */ + virt_dev->in_ctx->add_flags |= SLOT_FLAG; + virt_dev->in_ctx->add_flags &= ~EP0_FLAG; + virt_dev->in_ctx->drop_flags &= ~SLOT_FLAG; + virt_dev->in_ctx->drop_flags &= ~EP0_FLAG; + xhci_dbg(xhci, "New Input Control Context:\n"); + xhci_dbg_ctx(xhci, virt_dev->in_ctx, virt_dev->in_ctx_dma, + LAST_CTX_TO_EP_NUM(virt_dev->in_ctx->slot.dev_info)); + + spin_lock_irqsave(&xhci->lock, flags); + ret = xhci_queue_configure_endpoint(xhci, virt_dev->in_ctx_dma, + udev->slot_id); + if (ret < 0) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_dbg(xhci, "FIXME allocate a new ring segment\n"); + return -ENOMEM; + } + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + + /* Wait for the configure endpoint command to complete */ + timeleft = wait_for_completion_interruptible_timeout( + &virt_dev->cmd_completion, + USB_CTRL_SET_TIMEOUT); + if (timeleft <= 0) { + xhci_warn(xhci, "%s while waiting for configure endpoint command\n", + timeleft == 0 ? "Timeout" : "Signal"); + /* FIXME cancel the configure endpoint command */ + return -ETIME; + } + + switch (virt_dev->cmd_status) { + case COMP_ENOMEM: + dev_warn(&udev->dev, "Not enough host controller resources " + "for new device state.\n"); + ret = -ENOMEM; + /* FIXME: can we allocate more resources for the HC? */ + break; + case COMP_BW_ERR: + dev_warn(&udev->dev, "Not enough bandwidth " + "for new device state.\n"); + ret = -ENOSPC; + /* FIXME: can we go back to the old state? */ + break; + case COMP_TRB_ERR: + /* the HCD set up something wrong */ + dev_warn(&udev->dev, "ERROR: Endpoint drop flag = 0, add flag = 1, " + "and endpoint is not disabled.\n"); + ret = -EINVAL; + break; + case COMP_SUCCESS: + dev_dbg(&udev->dev, "Successful Endpoint Configure command\n"); + break; + default: + xhci_err(xhci, "ERROR: unexpected command completion " + "code 0x%x.\n", virt_dev->cmd_status); + ret = -EINVAL; + break; + } + if (ret) { + /* Callee should call reset_bandwidth() */ + return ret; + } + + xhci_dbg(xhci, "Output context after successful config ep cmd:\n"); + xhci_dbg_ctx(xhci, virt_dev->out_ctx, virt_dev->out_ctx_dma, + LAST_CTX_TO_EP_NUM(virt_dev->in_ctx->slot.dev_info)); + + xhci_zero_in_ctx(virt_dev); + /* Free any old rings */ + for (i = 1; i < 31; ++i) { + if (virt_dev->new_ep_rings[i]) { + xhci_ring_free(xhci, virt_dev->ep_rings[i]); + virt_dev->ep_rings[i] = virt_dev->new_ep_rings[i]; + virt_dev->new_ep_rings[i] = NULL; + } + } + + return ret; +} + +void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) +{ + struct xhci_hcd *xhci; + struct xhci_virt_device *virt_dev; + int i, ret; + + ret = xhci_check_args(hcd, udev, NULL, 0, __func__); + if (ret <= 0) + return; + xhci = hcd_to_xhci(hcd); + + if (!xhci->devs || !xhci->devs[udev->slot_id]) { + xhci_warn(xhci, "xHCI %s called with unaddressed device\n", + __func__); + return; + } + xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev); + virt_dev = xhci->devs[udev->slot_id]; + /* Free any rings allocated for added endpoints */ + for (i = 0; i < 31; ++i) { + if (virt_dev->new_ep_rings[i]) { + xhci_ring_free(xhci, virt_dev->new_ep_rings[i]); + virt_dev->new_ep_rings[i] = NULL; + } + } + xhci_zero_in_ctx(virt_dev); +} + +/* + * At this point, the struct usb_device is about to go away, the device has + * disconnected, and all traffic has been stopped and the endpoints have been + * disabled. Free any HC data structures associated with that device. + */ +void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + unsigned long flags; + + if (udev->slot_id == 0) + return; + + spin_lock_irqsave(&xhci->lock, flags); + if (xhci_queue_slot_control(xhci, TRB_DISABLE_SLOT, udev->slot_id)) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_dbg(xhci, "FIXME: allocate a command ring segment\n"); + return; + } + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + /* + * Event command completion handler will free any data structures + * associated with the slot. XXX Can free sleep? + */ +} + +/* + * Returns 0 if the xHC ran out of device slots, the Enable Slot command + * timed out, or allocating memory failed. Returns 1 on success. + */ +int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + unsigned long flags; + int timeleft; + int ret; + + spin_lock_irqsave(&xhci->lock, flags); + ret = xhci_queue_slot_control(xhci, TRB_ENABLE_SLOT, 0); + if (ret) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_dbg(xhci, "FIXME: allocate a command ring segment\n"); + return 0; + } + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + + /* XXX: how much time for xHC slot assignment? */ + timeleft = wait_for_completion_interruptible_timeout(&xhci->addr_dev, + USB_CTRL_SET_TIMEOUT); + if (timeleft <= 0) { + xhci_warn(xhci, "%s while waiting for a slot\n", + timeleft == 0 ? "Timeout" : "Signal"); + /* FIXME cancel the enable slot request */ + return 0; + } + + if (!xhci->slot_id) { + xhci_err(xhci, "Error while assigning device slot ID\n"); + return 0; + } + /* xhci_alloc_virt_device() does not touch rings; no need to lock */ + if (!xhci_alloc_virt_device(xhci, xhci->slot_id, udev, GFP_KERNEL)) { + /* Disable slot, if we can do it without mem alloc */ + xhci_warn(xhci, "Could not allocate xHCI USB device data structures\n"); + spin_lock_irqsave(&xhci->lock, flags); + if (!xhci_queue_slot_control(xhci, TRB_DISABLE_SLOT, udev->slot_id)) + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + return 0; + } + udev->slot_id = xhci->slot_id; + /* Is this a LS or FS device under a HS hub? */ + /* Hub or peripherial? */ + return 1; +} + +/* + * Issue an Address Device command (which will issue a SetAddress request to + * the device). + * We should be protected by the usb_address0_mutex in khubd's hub_port_init, so + * we should only issue and wait on one address command at the same time. + * + * We add one to the device address issued by the hardware because the USB core + * uses address 1 for the root hubs (even though they're not really devices). + */ +int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) +{ + unsigned long flags; + int timeleft; + struct xhci_virt_device *virt_dev; + int ret = 0; + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + u32 temp; + + if (!udev->slot_id) { + xhci_dbg(xhci, "Bad Slot ID %d\n", udev->slot_id); + return -EINVAL; + } + + virt_dev = xhci->devs[udev->slot_id]; + + /* If this is a Set Address to an unconfigured device, setup ep 0 */ + if (!udev->config) + xhci_setup_addressable_virt_dev(xhci, udev); + /* Otherwise, assume the core has the device configured how it wants */ + + spin_lock_irqsave(&xhci->lock, flags); + ret = xhci_queue_address_device(xhci, virt_dev->in_ctx_dma, + udev->slot_id); + if (ret) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_dbg(xhci, "FIXME: allocate a command ring segment\n"); + return ret; + } + xhci_ring_cmd_db(xhci); + spin_unlock_irqrestore(&xhci->lock, flags); + + /* ctrl tx can take up to 5 sec; XXX: need more time for xHC? */ + timeleft = wait_for_completion_interruptible_timeout(&xhci->addr_dev, + USB_CTRL_SET_TIMEOUT); + /* FIXME: From section 4.3.4: "Software shall be responsible for timing + * the SetAddress() "recovery interval" required by USB and aborting the + * command on a timeout. + */ + if (timeleft <= 0) { + xhci_warn(xhci, "%s while waiting for a slot\n", + timeleft == 0 ? "Timeout" : "Signal"); + /* FIXME cancel the address device command */ + return -ETIME; + } + + switch (virt_dev->cmd_status) { + case COMP_CTX_STATE: + case COMP_EBADSLT: + xhci_err(xhci, "Setup ERROR: address device command for slot %d.\n", + udev->slot_id); + ret = -EINVAL; + break; + case COMP_TX_ERR: + dev_warn(&udev->dev, "Device not responding to set address.\n"); + ret = -EPROTO; + break; + case COMP_SUCCESS: + xhci_dbg(xhci, "Successful Address Device command\n"); + break; + default: + xhci_err(xhci, "ERROR: unexpected command completion " + "code 0x%x.\n", virt_dev->cmd_status); + ret = -EINVAL; + break; + } + if (ret) { + return ret; + } + temp = xhci_readl(xhci, &xhci->op_regs->dcbaa_ptr[0]); + xhci_dbg(xhci, "Op regs DCBAA ptr[0] = %#08x\n", temp); + temp = xhci_readl(xhci, &xhci->op_regs->dcbaa_ptr[1]); + xhci_dbg(xhci, "Op regs DCBAA ptr[1] = %#08x\n", temp); + xhci_dbg(xhci, "Slot ID %d dcbaa entry[0] @%p = %#08x\n", + udev->slot_id, + &xhci->dcbaa->dev_context_ptrs[2*udev->slot_id], + xhci->dcbaa->dev_context_ptrs[2*udev->slot_id]); + xhci_dbg(xhci, "Slot ID %d dcbaa entry[1] @%p = %#08x\n", + udev->slot_id, + &xhci->dcbaa->dev_context_ptrs[2*udev->slot_id+1], + xhci->dcbaa->dev_context_ptrs[2*udev->slot_id+1]); + xhci_dbg(xhci, "Output Context DMA address = %#08llx\n", + (unsigned long long)virt_dev->out_ctx_dma); + xhci_dbg(xhci, "Slot ID %d Input Context:\n", udev->slot_id); + xhci_dbg_ctx(xhci, virt_dev->in_ctx, virt_dev->in_ctx_dma, 2); + xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id); + xhci_dbg_ctx(xhci, virt_dev->out_ctx, virt_dev->out_ctx_dma, 2); + /* + * USB core uses address 1 for the roothubs, so we add one to the + * address given back to us by the HC. + */ + udev->devnum = (virt_dev->out_ctx->slot.dev_state & DEV_ADDR_MASK) + 1; + /* Zero the input context control for later use */ + virt_dev->in_ctx->add_flags = 0; + virt_dev->in_ctx->drop_flags = 0; + /* Mirror flags in the output context for future ep enable/disable */ + virt_dev->out_ctx->add_flags = SLOT_FLAG | EP0_FLAG; + virt_dev->out_ctx->drop_flags = 0; + + xhci_dbg(xhci, "Device address = %d\n", udev->devnum); + /* XXX Meh, not sure if anyone else but choose_address uses this. */ + set_bit(udev->devnum, udev->bus->devmap.devicemap); + + return 0; +} + +int xhci_get_frame(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + /* EHCI mods by the periodic size. Why? */ + return xhci_readl(xhci, &xhci->run_regs->microframe_index) >> 3; +} + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_LICENSE("GPL"); + +static int __init xhci_hcd_init(void) +{ +#ifdef CONFIG_PCI + int retval = 0; + + retval = xhci_register_pci(); + + if (retval < 0) { + printk(KERN_DEBUG "Problem registering PCI driver."); + return retval; + } +#endif + /* + * Check the compiler generated sizes of structures that must be laid + * out in specific ways for hardware access. + */ + BUILD_BUG_ON(sizeof(struct xhci_doorbell_array) != 256*32/8); + BUILD_BUG_ON(sizeof(struct xhci_slot_ctx) != 8*32/8); + BUILD_BUG_ON(sizeof(struct xhci_ep_ctx) != 8*32/8); + /* xhci_device_control has eight fields, and also + * embeds one xhci_slot_ctx and 31 xhci_ep_ctx + */ + BUILD_BUG_ON(sizeof(struct xhci_device_control) != (8+8+8*31)*32/8); + BUILD_BUG_ON(sizeof(struct xhci_stream_ctx) != 4*32/8); + BUILD_BUG_ON(sizeof(union xhci_trb) != 4*32/8); + BUILD_BUG_ON(sizeof(struct xhci_erst_entry) != 4*32/8); + BUILD_BUG_ON(sizeof(struct xhci_cap_regs) != 7*32/8); + BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8); + /* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */ + BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8); + BUILD_BUG_ON(sizeof(struct xhci_doorbell_array) != 256*32/8); + return 0; +} +module_init(xhci_hcd_init); + +static void __exit xhci_hcd_cleanup(void) +{ +#ifdef CONFIG_PCI + xhci_unregister_pci(); +#endif +} +module_exit(xhci_hcd_cleanup); diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c new file mode 100644 index 000000000000..eac5b53aa9e7 --- /dev/null +++ b/drivers/usb/host/xhci-hub.c @@ -0,0 +1,308 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <asm/unaligned.h> + +#include "xhci.h" + +static void xhci_hub_descriptor(struct xhci_hcd *xhci, + struct usb_hub_descriptor *desc) +{ + int ports; + u16 temp; + + ports = HCS_MAX_PORTS(xhci->hcs_params1); + + /* USB 3.0 hubs have a different descriptor, but we fake this for now */ + desc->bDescriptorType = 0x29; + desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.9 says 20ms max */ + desc->bHubContrCurrent = 0; + + desc->bNbrPorts = ports; + temp = 1 + (ports / 8); + desc->bDescLength = 7 + 2 * temp; + + /* Why does core/hcd.h define bitmap? It's just confusing. */ + memset(&desc->DeviceRemovable[0], 0, temp); + memset(&desc->DeviceRemovable[temp], 0xff, temp); + + /* Ugh, these should be #defines, FIXME */ + /* Using table 11-13 in USB 2.0 spec. */ + temp = 0; + /* Bits 1:0 - support port power switching, or power always on */ + if (HCC_PPC(xhci->hcc_params)) + temp |= 0x0001; + else + temp |= 0x0002; + /* Bit 2 - root hubs are not part of a compound device */ + /* Bits 4:3 - individual port over current protection */ + temp |= 0x0008; + /* Bits 6:5 - no TTs in root ports */ + /* Bit 7 - no port indicators */ + desc->wHubCharacteristics = (__force __u16) cpu_to_le16(temp); +} + +static unsigned int xhci_port_speed(unsigned int port_status) +{ + if (DEV_LOWSPEED(port_status)) + return 1 << USB_PORT_FEAT_LOWSPEED; + if (DEV_HIGHSPEED(port_status)) + return 1 << USB_PORT_FEAT_HIGHSPEED; + if (DEV_SUPERSPEED(port_status)) + return 1 << USB_PORT_FEAT_SUPERSPEED; + /* + * FIXME: Yes, we should check for full speed, but the core uses that as + * a default in portspeed() in usb/core/hub.c (which is the only place + * USB_PORT_FEAT_*SPEED is used). + */ + return 0; +} + +/* + * These bits are Read Only (RO) and should be saved and written to the + * registers: 0, 3, 10:13, 30 + * connect status, over-current status, port speed, and device removable. + * connect status and port speed are also sticky - meaning they're in + * the AUX well and they aren't changed by a hot, warm, or cold reset. + */ +#define XHCI_PORT_RO ((1<<0) | (1<<3) | (0xf<<10) | (1<<30)) +/* + * These bits are RW; writing a 0 clears the bit, writing a 1 sets the bit: + * bits 5:8, 9, 14:15, 25:27 + * link state, port power, port indicator state, "wake on" enable state + */ +#define XHCI_PORT_RWS ((0xf<<5) | (1<<9) | (0x3<<14) | (0x7<<25)) +/* + * These bits are RW; writing a 1 sets the bit, writing a 0 has no effect: + * bit 4 (port reset) + */ +#define XHCI_PORT_RW1S ((1<<4)) +/* + * These bits are RW; writing a 1 clears the bit, writing a 0 has no effect: + * bits 1, 17, 18, 19, 20, 21, 22, 23 + * port enable/disable, and + * change bits: connect, PED, warm port reset changed (reserved zero for USB 2.0 ports), + * over-current, reset, link state, and L1 change + */ +#define XHCI_PORT_RW1CS ((1<<1) | (0x7f<<17)) +/* + * Bit 16 is RW, and writing a '1' to it causes the link state control to be + * latched in + */ +#define XHCI_PORT_RW ((1<<16)) +/* + * These bits are Reserved Zero (RsvdZ) and zero should be written to them: + * bits 2, 24, 28:31 + */ +#define XHCI_PORT_RZ ((1<<2) | (1<<24) | (0xf<<28)) + +/* + * Given a port state, this function returns a value that would result in the + * port being in the same state, if the value was written to the port status + * control register. + * Save Read Only (RO) bits and save read/write bits where + * writing a 0 clears the bit and writing a 1 sets the bit (RWS). + * For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect. + */ +static u32 xhci_port_state_to_neutral(u32 state) +{ + /* Save read-only status and port state */ + return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS); +} + +int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, + u16 wIndex, char *buf, u16 wLength) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int ports; + unsigned long flags; + u32 temp, status; + int retval = 0; + u32 __iomem *addr; + char *port_change_bit; + + ports = HCS_MAX_PORTS(xhci->hcs_params1); + + spin_lock_irqsave(&xhci->lock, flags); + switch (typeReq) { + case GetHubStatus: + /* No power source, over-current reported per port */ + memset(buf, 0, 4); + break; + case GetHubDescriptor: + xhci_hub_descriptor(xhci, (struct usb_hub_descriptor *) buf); + break; + case GetPortStatus: + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + status = 0; + addr = &xhci->op_regs->port_status_base + NUM_PORT_REGS*(wIndex & 0xff); + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", wIndex, temp); + + /* wPortChange bits */ + if (temp & PORT_CSC) + status |= 1 << USB_PORT_FEAT_C_CONNECTION; + if (temp & PORT_PEC) + status |= 1 << USB_PORT_FEAT_C_ENABLE; + if ((temp & PORT_OCC)) + status |= 1 << USB_PORT_FEAT_C_OVER_CURRENT; + /* + * FIXME ignoring suspend, reset, and USB 2.1/3.0 specific + * changes + */ + if (temp & PORT_CONNECT) { + status |= 1 << USB_PORT_FEAT_CONNECTION; + status |= xhci_port_speed(temp); + } + if (temp & PORT_PE) + status |= 1 << USB_PORT_FEAT_ENABLE; + if (temp & PORT_OC) + status |= 1 << USB_PORT_FEAT_OVER_CURRENT; + if (temp & PORT_RESET) + status |= 1 << USB_PORT_FEAT_RESET; + if (temp & PORT_POWER) + status |= 1 << USB_PORT_FEAT_POWER; + xhci_dbg(xhci, "Get port status returned 0x%x\n", status); + put_unaligned(cpu_to_le32(status), (__le32 *) buf); + break; + case SetPortFeature: + wIndex &= 0xff; + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + addr = &xhci->op_regs->port_status_base + NUM_PORT_REGS*(wIndex & 0xff); + temp = xhci_readl(xhci, addr); + temp = xhci_port_state_to_neutral(temp); + switch (wValue) { + case USB_PORT_FEAT_POWER: + /* + * Turn on ports, even if there isn't per-port switching. + * HC will report connect events even before this is set. + * However, khubd will ignore the roothub events until + * the roothub is registered. + */ + xhci_writel(xhci, temp | PORT_POWER, addr); + + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", wIndex, temp); + break; + case USB_PORT_FEAT_RESET: + temp = (temp | PORT_RESET); + xhci_writel(xhci, temp, addr); + + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp); + break; + default: + goto error; + } + temp = xhci_readl(xhci, addr); /* unblock any posted writes */ + break; + case ClearPortFeature: + if (!wIndex || wIndex > ports) + goto error; + wIndex--; + addr = &xhci->op_regs->port_status_base + + NUM_PORT_REGS*(wIndex & 0xff); + temp = xhci_readl(xhci, addr); + temp = xhci_port_state_to_neutral(temp); + switch (wValue) { + case USB_PORT_FEAT_C_RESET: + status = PORT_RC; + port_change_bit = "reset"; + break; + case USB_PORT_FEAT_C_CONNECTION: + status = PORT_CSC; + port_change_bit = "connect"; + break; + case USB_PORT_FEAT_C_OVER_CURRENT: + status = PORT_OCC; + port_change_bit = "over-current"; + break; + default: + goto error; + } + /* Change bits are all write 1 to clear */ + xhci_writel(xhci, temp | status, addr); + temp = xhci_readl(xhci, addr); + xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n", + port_change_bit, wIndex, temp); + temp = xhci_readl(xhci, addr); /* unblock any posted writes */ + break; + default: +error: + /* "stall" on error */ + retval = -EPIPE; + } + spin_unlock_irqrestore(&xhci->lock, flags); + return retval; +} + +/* + * Returns 0 if the status hasn't changed, or the number of bytes in buf. + * Ports are 0-indexed from the HCD point of view, + * and 1-indexed from the USB core pointer of view. + * xHCI instances can have up to 127 ports, so FIXME if you see more than 15. + * + * Note that the status change bits will be cleared as soon as a port status + * change event is generated, so we use the saved status from that event. + */ +int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) +{ + unsigned long flags; + u32 temp, status; + int i, retval; + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int ports; + u32 __iomem *addr; + + ports = HCS_MAX_PORTS(xhci->hcs_params1); + + /* Initial status is no changes */ + buf[0] = 0; + status = 0; + if (ports > 7) { + buf[1] = 0; + retval = 2; + } else { + retval = 1; + } + + spin_lock_irqsave(&xhci->lock, flags); + /* For each port, did anything change? If so, set that bit in buf. */ + for (i = 0; i < ports; i++) { + addr = &xhci->op_regs->port_status_base + + NUM_PORT_REGS*i; + temp = xhci_readl(xhci, addr); + if (temp & (PORT_CSC | PORT_PEC | PORT_OCC)) { + if (i < 7) + buf[0] |= 1 << (i + 1); + else + buf[1] |= 1 << (i - 7); + status = 1; + } + } + spin_unlock_irqrestore(&xhci->lock, flags); + return status ? retval : 0; +} diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c new file mode 100644 index 000000000000..c8a72de1c508 --- /dev/null +++ b/drivers/usb/host/xhci-mem.c @@ -0,0 +1,769 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/usb.h> +#include <linux/pci.h> +#include <linux/dmapool.h> + +#include "xhci.h" + +/* + * Allocates a generic ring segment from the ring pool, sets the dma address, + * initializes the segment to zero, and sets the private next pointer to NULL. + * + * Section 4.11.1.1: + * "All components of all Command and Transfer TRBs shall be initialized to '0'" + */ +static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci, gfp_t flags) +{ + struct xhci_segment *seg; + dma_addr_t dma; + + seg = kzalloc(sizeof *seg, flags); + if (!seg) + return 0; + xhci_dbg(xhci, "Allocating priv segment structure at %p\n", seg); + + seg->trbs = dma_pool_alloc(xhci->segment_pool, flags, &dma); + if (!seg->trbs) { + kfree(seg); + return 0; + } + xhci_dbg(xhci, "// Allocating segment at %p (virtual) 0x%llx (DMA)\n", + seg->trbs, (unsigned long long)dma); + + memset(seg->trbs, 0, SEGMENT_SIZE); + seg->dma = dma; + seg->next = NULL; + + return seg; +} + +static void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg) +{ + if (!seg) + return; + if (seg->trbs) { + xhci_dbg(xhci, "Freeing DMA segment at %p (virtual) 0x%llx (DMA)\n", + seg->trbs, (unsigned long long)seg->dma); + dma_pool_free(xhci->segment_pool, seg->trbs, seg->dma); + seg->trbs = NULL; + } + xhci_dbg(xhci, "Freeing priv segment structure at %p\n", seg); + kfree(seg); +} + +/* + * Make the prev segment point to the next segment. + * + * Change the last TRB in the prev segment to be a Link TRB which points to the + * DMA address of the next segment. The caller needs to set any Link TRB + * related flags, such as End TRB, Toggle Cycle, and no snoop. + */ +static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev, + struct xhci_segment *next, bool link_trbs) +{ + u32 val; + + if (!prev || !next) + return; + prev->next = next; + if (link_trbs) { + prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr[0] = next->dma; + + /* Set the last TRB in the segment to have a TRB type ID of Link TRB */ + val = prev->trbs[TRBS_PER_SEGMENT-1].link.control; + val &= ~TRB_TYPE_BITMASK; + val |= TRB_TYPE(TRB_LINK); + prev->trbs[TRBS_PER_SEGMENT-1].link.control = val; + } + xhci_dbg(xhci, "Linking segment 0x%llx to segment 0x%llx (DMA)\n", + (unsigned long long)prev->dma, + (unsigned long long)next->dma); +} + +/* XXX: Do we need the hcd structure in all these functions? */ +void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring) +{ + struct xhci_segment *seg; + struct xhci_segment *first_seg; + + if (!ring || !ring->first_seg) + return; + first_seg = ring->first_seg; + seg = first_seg->next; + xhci_dbg(xhci, "Freeing ring at %p\n", ring); + while (seg != first_seg) { + struct xhci_segment *next = seg->next; + xhci_segment_free(xhci, seg); + seg = next; + } + xhci_segment_free(xhci, first_seg); + ring->first_seg = NULL; + kfree(ring); +} + +/** + * Create a new ring with zero or more segments. + * + * Link each segment together into a ring. + * Set the end flag and the cycle toggle bit on the last segment. + * See section 4.9.1 and figures 15 and 16. + */ +static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, + unsigned int num_segs, bool link_trbs, gfp_t flags) +{ + struct xhci_ring *ring; + struct xhci_segment *prev; + + ring = kzalloc(sizeof *(ring), flags); + xhci_dbg(xhci, "Allocating ring at %p\n", ring); + if (!ring) + return 0; + + INIT_LIST_HEAD(&ring->td_list); + INIT_LIST_HEAD(&ring->cancelled_td_list); + if (num_segs == 0) + return ring; + + ring->first_seg = xhci_segment_alloc(xhci, flags); + if (!ring->first_seg) + goto fail; + num_segs--; + + prev = ring->first_seg; + while (num_segs > 0) { + struct xhci_segment *next; + + next = xhci_segment_alloc(xhci, flags); + if (!next) + goto fail; + xhci_link_segments(xhci, prev, next, link_trbs); + + prev = next; + num_segs--; + } + xhci_link_segments(xhci, prev, ring->first_seg, link_trbs); + + if (link_trbs) { + /* See section 4.9.2.1 and 6.4.4.1 */ + prev->trbs[TRBS_PER_SEGMENT-1].link.control |= (LINK_TOGGLE); + xhci_dbg(xhci, "Wrote link toggle flag to" + " segment %p (virtual), 0x%llx (DMA)\n", + prev, (unsigned long long)prev->dma); + } + /* The ring is empty, so the enqueue pointer == dequeue pointer */ + ring->enqueue = ring->first_seg->trbs; + ring->enq_seg = ring->first_seg; + ring->dequeue = ring->enqueue; + ring->deq_seg = ring->first_seg; + /* The ring is initialized to 0. The producer must write 1 to the cycle + * bit to handover ownership of the TRB, so PCS = 1. The consumer must + * compare CCS to the cycle bit to check ownership, so CCS = 1. + */ + ring->cycle_state = 1; + + return ring; + +fail: + xhci_ring_free(xhci, ring); + return 0; +} + +/* All the xhci_tds in the ring's TD list should be freed at this point */ +void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) +{ + struct xhci_virt_device *dev; + int i; + + /* Slot ID 0 is reserved */ + if (slot_id == 0 || !xhci->devs[slot_id]) + return; + + dev = xhci->devs[slot_id]; + xhci->dcbaa->dev_context_ptrs[2*slot_id] = 0; + xhci->dcbaa->dev_context_ptrs[2*slot_id + 1] = 0; + if (!dev) + return; + + for (i = 0; i < 31; ++i) + if (dev->ep_rings[i]) + xhci_ring_free(xhci, dev->ep_rings[i]); + + if (dev->in_ctx) + dma_pool_free(xhci->device_pool, + dev->in_ctx, dev->in_ctx_dma); + if (dev->out_ctx) + dma_pool_free(xhci->device_pool, + dev->out_ctx, dev->out_ctx_dma); + kfree(xhci->devs[slot_id]); + xhci->devs[slot_id] = 0; +} + +int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, + struct usb_device *udev, gfp_t flags) +{ + dma_addr_t dma; + struct xhci_virt_device *dev; + + /* Slot ID 0 is reserved */ + if (slot_id == 0 || xhci->devs[slot_id]) { + xhci_warn(xhci, "Bad Slot ID %d\n", slot_id); + return 0; + } + + xhci->devs[slot_id] = kzalloc(sizeof(*xhci->devs[slot_id]), flags); + if (!xhci->devs[slot_id]) + return 0; + dev = xhci->devs[slot_id]; + + /* Allocate the (output) device context that will be used in the HC */ + dev->out_ctx = dma_pool_alloc(xhci->device_pool, flags, &dma); + if (!dev->out_ctx) + goto fail; + dev->out_ctx_dma = dma; + xhci_dbg(xhci, "Slot %d output ctx = 0x%llx (dma)\n", slot_id, + (unsigned long long)dma); + memset(dev->out_ctx, 0, sizeof(*dev->out_ctx)); + + /* Allocate the (input) device context for address device command */ + dev->in_ctx = dma_pool_alloc(xhci->device_pool, flags, &dma); + if (!dev->in_ctx) + goto fail; + dev->in_ctx_dma = dma; + xhci_dbg(xhci, "Slot %d input ctx = 0x%llx (dma)\n", slot_id, + (unsigned long long)dma); + memset(dev->in_ctx, 0, sizeof(*dev->in_ctx)); + + /* Allocate endpoint 0 ring */ + dev->ep_rings[0] = xhci_ring_alloc(xhci, 1, true, flags); + if (!dev->ep_rings[0]) + goto fail; + + init_completion(&dev->cmd_completion); + + /* + * Point to output device context in dcbaa; skip the output control + * context, which is eight 32 bit fields (or 32 bytes long) + */ + xhci->dcbaa->dev_context_ptrs[2*slot_id] = + (u32) dev->out_ctx_dma + (32); + xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n", + slot_id, + &xhci->dcbaa->dev_context_ptrs[2*slot_id], + (unsigned long long)dev->out_ctx_dma); + xhci->dcbaa->dev_context_ptrs[2*slot_id + 1] = 0; + + return 1; +fail: + xhci_free_virt_device(xhci, slot_id); + return 0; +} + +/* Setup an xHCI virtual device for a Set Address command */ +int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev) +{ + struct xhci_virt_device *dev; + struct xhci_ep_ctx *ep0_ctx; + struct usb_device *top_dev; + + dev = xhci->devs[udev->slot_id]; + /* Slot ID 0 is reserved */ + if (udev->slot_id == 0 || !dev) { + xhci_warn(xhci, "Slot ID %d is not assigned to this device\n", + udev->slot_id); + return -EINVAL; + } + ep0_ctx = &dev->in_ctx->ep[0]; + + /* 2) New slot context and endpoint 0 context are valid*/ + dev->in_ctx->add_flags = SLOT_FLAG | EP0_FLAG; + + /* 3) Only the control endpoint is valid - one endpoint context */ + dev->in_ctx->slot.dev_info |= LAST_CTX(1); + + switch (udev->speed) { + case USB_SPEED_SUPER: + dev->in_ctx->slot.dev_info |= (u32) udev->route; + dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_SS; + break; + case USB_SPEED_HIGH: + dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_HS; + break; + case USB_SPEED_FULL: + dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_FS; + break; + case USB_SPEED_LOW: + dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_LS; + break; + case USB_SPEED_VARIABLE: + xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); + return -EINVAL; + break; + default: + /* Speed was set earlier, this shouldn't happen. */ + BUG(); + } + /* Find the root hub port this device is under */ + for (top_dev = udev; top_dev->parent && top_dev->parent->parent; + top_dev = top_dev->parent) + /* Found device below root hub */; + dev->in_ctx->slot.dev_info2 |= (u32) ROOT_HUB_PORT(top_dev->portnum); + xhci_dbg(xhci, "Set root hub portnum to %d\n", top_dev->portnum); + + /* Is this a LS/FS device under a HS hub? */ + /* + * FIXME: I don't think this is right, where does the TT info for the + * roothub or parent hub come from? + */ + if ((udev->speed == USB_SPEED_LOW || udev->speed == USB_SPEED_FULL) && + udev->tt) { + dev->in_ctx->slot.tt_info = udev->tt->hub->slot_id; + dev->in_ctx->slot.tt_info |= udev->ttport << 8; + } + xhci_dbg(xhci, "udev->tt = %p\n", udev->tt); + xhci_dbg(xhci, "udev->ttport = 0x%x\n", udev->ttport); + + /* Step 4 - ring already allocated */ + /* Step 5 */ + ep0_ctx->ep_info2 = EP_TYPE(CTRL_EP); + /* + * See section 4.3 bullet 6: + * The default Max Packet size for ep0 is "8 bytes for a USB2 + * LS/FS/HS device or 512 bytes for a USB3 SS device" + * XXX: Not sure about wireless USB devices. + */ + if (udev->speed == USB_SPEED_SUPER) + ep0_ctx->ep_info2 |= MAX_PACKET(512); + else + ep0_ctx->ep_info2 |= MAX_PACKET(8); + /* EP 0 can handle "burst" sizes of 1, so Max Burst Size field is 0 */ + ep0_ctx->ep_info2 |= MAX_BURST(0); + ep0_ctx->ep_info2 |= ERROR_COUNT(3); + + ep0_ctx->deq[0] = + dev->ep_rings[0]->first_seg->dma; + ep0_ctx->deq[0] |= dev->ep_rings[0]->cycle_state; + ep0_ctx->deq[1] = 0; + + /* Steps 7 and 8 were done in xhci_alloc_virt_device() */ + + return 0; +} + +/* Return the polling or NAK interval. + * + * The polling interval is expressed in "microframes". If xHCI's Interval field + * is set to N, it will service the endpoint every 2^(Interval)*125us. + * + * The NAK interval is one NAK per 1 to 255 microframes, or no NAKs if interval + * is set to 0. + */ +static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev, + struct usb_host_endpoint *ep) +{ + unsigned int interval = 0; + + switch (udev->speed) { + case USB_SPEED_HIGH: + /* Max NAK rate */ + if (usb_endpoint_xfer_control(&ep->desc) || + usb_endpoint_xfer_bulk(&ep->desc)) + interval = ep->desc.bInterval; + /* Fall through - SS and HS isoc/int have same decoding */ + case USB_SPEED_SUPER: + if (usb_endpoint_xfer_int(&ep->desc) || + usb_endpoint_xfer_isoc(&ep->desc)) { + if (ep->desc.bInterval == 0) + interval = 0; + else + interval = ep->desc.bInterval - 1; + if (interval > 15) + interval = 15; + if (interval != ep->desc.bInterval + 1) + dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n", + ep->desc.bEndpointAddress, 1 << interval); + } + break; + /* Convert bInterval (in 1-255 frames) to microframes and round down to + * nearest power of 2. + */ + case USB_SPEED_FULL: + case USB_SPEED_LOW: + if (usb_endpoint_xfer_int(&ep->desc) || + usb_endpoint_xfer_isoc(&ep->desc)) { + interval = fls(8*ep->desc.bInterval) - 1; + if (interval > 10) + interval = 10; + if (interval < 3) + interval = 3; + if ((1 << interval) != 8*ep->desc.bInterval) + dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n", + ep->desc.bEndpointAddress, 1 << interval); + } + break; + default: + BUG(); + } + return EP_INTERVAL(interval); +} + +static inline u32 xhci_get_endpoint_type(struct usb_device *udev, + struct usb_host_endpoint *ep) +{ + int in; + u32 type; + + in = usb_endpoint_dir_in(&ep->desc); + if (usb_endpoint_xfer_control(&ep->desc)) { + type = EP_TYPE(CTRL_EP); + } else if (usb_endpoint_xfer_bulk(&ep->desc)) { + if (in) + type = EP_TYPE(BULK_IN_EP); + else + type = EP_TYPE(BULK_OUT_EP); + } else if (usb_endpoint_xfer_isoc(&ep->desc)) { + if (in) + type = EP_TYPE(ISOC_IN_EP); + else + type = EP_TYPE(ISOC_OUT_EP); + } else if (usb_endpoint_xfer_int(&ep->desc)) { + if (in) + type = EP_TYPE(INT_IN_EP); + else + type = EP_TYPE(INT_OUT_EP); + } else { + BUG(); + } + return type; +} + +int xhci_endpoint_init(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + struct usb_device *udev, + struct usb_host_endpoint *ep, + gfp_t mem_flags) +{ + unsigned int ep_index; + struct xhci_ep_ctx *ep_ctx; + struct xhci_ring *ep_ring; + unsigned int max_packet; + unsigned int max_burst; + + ep_index = xhci_get_endpoint_index(&ep->desc); + ep_ctx = &virt_dev->in_ctx->ep[ep_index]; + + /* Set up the endpoint ring */ + virt_dev->new_ep_rings[ep_index] = xhci_ring_alloc(xhci, 1, true, mem_flags); + if (!virt_dev->new_ep_rings[ep_index]) + return -ENOMEM; + ep_ring = virt_dev->new_ep_rings[ep_index]; + ep_ctx->deq[0] = ep_ring->first_seg->dma | ep_ring->cycle_state; + ep_ctx->deq[1] = 0; + + ep_ctx->ep_info = xhci_get_endpoint_interval(udev, ep); + + /* FIXME dig Mult and streams info out of ep companion desc */ + + /* Allow 3 retries for everything but isoc */ + if (!usb_endpoint_xfer_isoc(&ep->desc)) + ep_ctx->ep_info2 = ERROR_COUNT(3); + else + ep_ctx->ep_info2 = ERROR_COUNT(0); + + ep_ctx->ep_info2 |= xhci_get_endpoint_type(udev, ep); + + /* Set the max packet size and max burst */ + switch (udev->speed) { + case USB_SPEED_SUPER: + max_packet = ep->desc.wMaxPacketSize; + ep_ctx->ep_info2 |= MAX_PACKET(max_packet); + /* dig out max burst from ep companion desc */ + max_packet = ep->ss_ep_comp->desc.bMaxBurst; + ep_ctx->ep_info2 |= MAX_BURST(max_packet); + break; + case USB_SPEED_HIGH: + /* bits 11:12 specify the number of additional transaction + * opportunities per microframe (USB 2.0, section 9.6.6) + */ + if (usb_endpoint_xfer_isoc(&ep->desc) || + usb_endpoint_xfer_int(&ep->desc)) { + max_burst = (ep->desc.wMaxPacketSize & 0x1800) >> 11; + ep_ctx->ep_info2 |= MAX_BURST(max_burst); + } + /* Fall through */ + case USB_SPEED_FULL: + case USB_SPEED_LOW: + max_packet = ep->desc.wMaxPacketSize & 0x3ff; + ep_ctx->ep_info2 |= MAX_PACKET(max_packet); + break; + default: + BUG(); + } + /* FIXME Debug endpoint context */ + return 0; +} + +void xhci_endpoint_zero(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + struct usb_host_endpoint *ep) +{ + unsigned int ep_index; + struct xhci_ep_ctx *ep_ctx; + + ep_index = xhci_get_endpoint_index(&ep->desc); + ep_ctx = &virt_dev->in_ctx->ep[ep_index]; + + ep_ctx->ep_info = 0; + ep_ctx->ep_info2 = 0; + ep_ctx->deq[0] = 0; + ep_ctx->deq[1] = 0; + ep_ctx->tx_info = 0; + /* Don't free the endpoint ring until the set interface or configuration + * request succeeds. + */ +} + +void xhci_mem_cleanup(struct xhci_hcd *xhci) +{ + struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); + int size; + int i; + + /* Free the Event Ring Segment Table and the actual Event Ring */ + xhci_writel(xhci, 0, &xhci->ir_set->erst_size); + xhci_writel(xhci, 0, &xhci->ir_set->erst_base[0]); + xhci_writel(xhci, 0, &xhci->ir_set->erst_base[1]); + xhci_writel(xhci, 0, &xhci->ir_set->erst_dequeue[0]); + xhci_writel(xhci, 0, &xhci->ir_set->erst_dequeue[1]); + size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries); + if (xhci->erst.entries) + pci_free_consistent(pdev, size, + xhci->erst.entries, xhci->erst.erst_dma_addr); + xhci->erst.entries = NULL; + xhci_dbg(xhci, "Freed ERST\n"); + if (xhci->event_ring) + xhci_ring_free(xhci, xhci->event_ring); + xhci->event_ring = NULL; + xhci_dbg(xhci, "Freed event ring\n"); + + xhci_writel(xhci, 0, &xhci->op_regs->cmd_ring[0]); + xhci_writel(xhci, 0, &xhci->op_regs->cmd_ring[1]); + if (xhci->cmd_ring) + xhci_ring_free(xhci, xhci->cmd_ring); + xhci->cmd_ring = NULL; + xhci_dbg(xhci, "Freed command ring\n"); + + for (i = 1; i < MAX_HC_SLOTS; ++i) + xhci_free_virt_device(xhci, i); + + if (xhci->segment_pool) + dma_pool_destroy(xhci->segment_pool); + xhci->segment_pool = NULL; + xhci_dbg(xhci, "Freed segment pool\n"); + + if (xhci->device_pool) + dma_pool_destroy(xhci->device_pool); + xhci->device_pool = NULL; + xhci_dbg(xhci, "Freed device context pool\n"); + + xhci_writel(xhci, 0, &xhci->op_regs->dcbaa_ptr[0]); + xhci_writel(xhci, 0, &xhci->op_regs->dcbaa_ptr[1]); + if (xhci->dcbaa) + pci_free_consistent(pdev, sizeof(*xhci->dcbaa), + xhci->dcbaa, xhci->dcbaa->dma); + xhci->dcbaa = NULL; + + xhci->page_size = 0; + xhci->page_shift = 0; +} + +int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) +{ + dma_addr_t dma; + struct device *dev = xhci_to_hcd(xhci)->self.controller; + unsigned int val, val2; + struct xhci_segment *seg; + u32 page_size; + int i; + + page_size = xhci_readl(xhci, &xhci->op_regs->page_size); + xhci_dbg(xhci, "Supported page size register = 0x%x\n", page_size); + for (i = 0; i < 16; i++) { + if ((0x1 & page_size) != 0) + break; + page_size = page_size >> 1; + } + if (i < 16) + xhci_dbg(xhci, "Supported page size of %iK\n", (1 << (i+12)) / 1024); + else + xhci_warn(xhci, "WARN: no supported page size\n"); + /* Use 4K pages, since that's common and the minimum the HC supports */ + xhci->page_shift = 12; + xhci->page_size = 1 << xhci->page_shift; + xhci_dbg(xhci, "HCD page size set to %iK\n", xhci->page_size / 1024); + + /* + * Program the Number of Device Slots Enabled field in the CONFIG + * register with the max value of slots the HC can handle. + */ + val = HCS_MAX_SLOTS(xhci_readl(xhci, &xhci->cap_regs->hcs_params1)); + xhci_dbg(xhci, "// xHC can handle at most %d device slots.\n", + (unsigned int) val); + val2 = xhci_readl(xhci, &xhci->op_regs->config_reg); + val |= (val2 & ~HCS_SLOTS_MASK); + xhci_dbg(xhci, "// Setting Max device slots reg = 0x%x.\n", + (unsigned int) val); + xhci_writel(xhci, val, &xhci->op_regs->config_reg); + + /* + * Section 5.4.8 - doorbell array must be + * "physically contiguous and 64-byte (cache line) aligned". + */ + xhci->dcbaa = pci_alloc_consistent(to_pci_dev(dev), + sizeof(*xhci->dcbaa), &dma); + if (!xhci->dcbaa) + goto fail; + memset(xhci->dcbaa, 0, sizeof *(xhci->dcbaa)); + xhci->dcbaa->dma = dma; + xhci_dbg(xhci, "// Device context base array address = 0x%llx (DMA), %p (virt)\n", + (unsigned long long)xhci->dcbaa->dma, xhci->dcbaa); + xhci_writel(xhci, dma, &xhci->op_regs->dcbaa_ptr[0]); + xhci_writel(xhci, (u32) 0, &xhci->op_regs->dcbaa_ptr[1]); + + /* + * Initialize the ring segment pool. The ring must be a contiguous + * structure comprised of TRBs. The TRBs must be 16 byte aligned, + * however, the command ring segment needs 64-byte aligned segments, + * so we pick the greater alignment need. + */ + xhci->segment_pool = dma_pool_create("xHCI ring segments", dev, + SEGMENT_SIZE, 64, xhci->page_size); + /* See Table 46 and Note on Figure 55 */ + /* FIXME support 64-byte contexts */ + xhci->device_pool = dma_pool_create("xHCI input/output contexts", dev, + sizeof(struct xhci_device_control), + 64, xhci->page_size); + if (!xhci->segment_pool || !xhci->device_pool) + goto fail; + + /* Set up the command ring to have one segments for now. */ + xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, flags); + if (!xhci->cmd_ring) + goto fail; + xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring); + xhci_dbg(xhci, "First segment DMA is 0x%llx\n", + (unsigned long long)xhci->cmd_ring->first_seg->dma); + + /* Set the address in the Command Ring Control register */ + val = xhci_readl(xhci, &xhci->op_regs->cmd_ring[0]); + val = (val & ~CMD_RING_ADDR_MASK) | + (xhci->cmd_ring->first_seg->dma & CMD_RING_ADDR_MASK) | + xhci->cmd_ring->cycle_state; + xhci_dbg(xhci, "// Setting command ring address low bits to 0x%x\n", val); + xhci_writel(xhci, val, &xhci->op_regs->cmd_ring[0]); + xhci_dbg(xhci, "// Setting command ring address high bits to 0x0\n"); + xhci_writel(xhci, (u32) 0, &xhci->op_regs->cmd_ring[1]); + xhci_dbg_cmd_ptrs(xhci); + + val = xhci_readl(xhci, &xhci->cap_regs->db_off); + val &= DBOFF_MASK; + xhci_dbg(xhci, "// Doorbell array is located at offset 0x%x" + " from cap regs base addr\n", val); + xhci->dba = (void *) xhci->cap_regs + val; + xhci_dbg_regs(xhci); + xhci_print_run_regs(xhci); + /* Set ir_set to interrupt register set 0 */ + xhci->ir_set = (void *) xhci->run_regs->ir_set; + + /* + * Event ring setup: Allocate a normal ring, but also setup + * the event ring segment table (ERST). Section 4.9.3. + */ + xhci_dbg(xhci, "// Allocating event ring\n"); + xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, flags); + if (!xhci->event_ring) + goto fail; + + xhci->erst.entries = pci_alloc_consistent(to_pci_dev(dev), + sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS, &dma); + if (!xhci->erst.entries) + goto fail; + xhci_dbg(xhci, "// Allocated event ring segment table at 0x%llx\n", + (unsigned long long)dma); + + memset(xhci->erst.entries, 0, sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS); + xhci->erst.num_entries = ERST_NUM_SEGS; + xhci->erst.erst_dma_addr = dma; + xhci_dbg(xhci, "Set ERST to 0; private num segs = %i, virt addr = %p, dma addr = 0x%llx\n", + xhci->erst.num_entries, + xhci->erst.entries, + (unsigned long long)xhci->erst.erst_dma_addr); + + /* set ring base address and size for each segment table entry */ + for (val = 0, seg = xhci->event_ring->first_seg; val < ERST_NUM_SEGS; val++) { + struct xhci_erst_entry *entry = &xhci->erst.entries[val]; + entry->seg_addr[0] = seg->dma; + entry->seg_addr[1] = 0; + entry->seg_size = TRBS_PER_SEGMENT; + entry->rsvd = 0; + seg = seg->next; + } + + /* set ERST count with the number of entries in the segment table */ + val = xhci_readl(xhci, &xhci->ir_set->erst_size); + val &= ERST_SIZE_MASK; + val |= ERST_NUM_SEGS; + xhci_dbg(xhci, "// Write ERST size = %i to ir_set 0 (some bits preserved)\n", + val); + xhci_writel(xhci, val, &xhci->ir_set->erst_size); + + xhci_dbg(xhci, "// Set ERST entries to point to event ring.\n"); + /* set the segment table base address */ + xhci_dbg(xhci, "// Set ERST base address for ir_set 0 = 0x%llx\n", + (unsigned long long)xhci->erst.erst_dma_addr); + val = xhci_readl(xhci, &xhci->ir_set->erst_base[0]); + val &= ERST_PTR_MASK; + val |= (xhci->erst.erst_dma_addr & ~ERST_PTR_MASK); + xhci_writel(xhci, val, &xhci->ir_set->erst_base[0]); + xhci_writel(xhci, 0, &xhci->ir_set->erst_base[1]); + + /* Set the event ring dequeue address */ + xhci_set_hc_event_deq(xhci); + xhci_dbg(xhci, "Wrote ERST address to ir_set 0.\n"); + xhci_print_ir_set(xhci, xhci->ir_set, 0); + + /* + * XXX: Might need to set the Interrupter Moderation Register to + * something other than the default (~1ms minimum between interrupts). + * See section 5.5.1.2. + */ + init_completion(&xhci->addr_dev); + for (i = 0; i < MAX_HC_SLOTS; ++i) + xhci->devs[i] = 0; + + return 0; +fail: + xhci_warn(xhci, "Couldn't initialize memory\n"); + xhci_mem_cleanup(xhci); + return -ENOMEM; +} diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c new file mode 100644 index 000000000000..1462709e26c0 --- /dev/null +++ b/drivers/usb/host/xhci-pci.c @@ -0,0 +1,166 @@ +/* + * xHCI host controller driver PCI Bus Glue. + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/pci.h> + +#include "xhci.h" + +static const char hcd_name[] = "xhci_hcd"; + +/* called after powerup, by probe or system-pm "wakeup" */ +static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) +{ + /* + * TODO: Implement finding debug ports later. + * TODO: see if there are any quirks that need to be added to handle + * new extended capabilities. + */ + + /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */ + if (!pci_set_mwi(pdev)) + xhci_dbg(xhci, "MWI active\n"); + + xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); + return 0; +} + +/* called during probe() after chip reset completes */ +static int xhci_pci_setup(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + int retval; + + xhci->cap_regs = hcd->regs; + xhci->op_regs = hcd->regs + + HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase)); + xhci->run_regs = hcd->regs + + (xhci_readl(xhci, &xhci->cap_regs->run_regs_off) & RTSOFF_MASK); + /* Cache read-only capability registers */ + xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1); + xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2); + xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3); + xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params); + xhci_print_registers(xhci); + + /* Make sure the HC is halted. */ + retval = xhci_halt(xhci); + if (retval) + return retval; + + xhci_dbg(xhci, "Resetting HCD\n"); + /* Reset the internal HC memory state and registers. */ + retval = xhci_reset(xhci); + if (retval) + return retval; + xhci_dbg(xhci, "Reset complete\n"); + + xhci_dbg(xhci, "Calling HCD init\n"); + /* Initialize HCD and host controller data structures. */ + retval = xhci_init(hcd); + if (retval) + return retval; + xhci_dbg(xhci, "Called HCD init\n"); + + pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn); + xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn); + + /* Find any debug ports */ + return xhci_pci_reinit(xhci, pdev); +} + +static const struct hc_driver xhci_pci_hc_driver = { + .description = hcd_name, + .product_desc = "xHCI Host Controller", + .hcd_priv_size = sizeof(struct xhci_hcd), + + /* + * generic hardware linkage + */ + .irq = xhci_irq, + .flags = HCD_MEMORY | HCD_USB3, + + /* + * basic lifecycle operations + */ + .reset = xhci_pci_setup, + .start = xhci_run, + /* suspend and resume implemented later */ + .stop = xhci_stop, + .shutdown = xhci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = xhci_urb_enqueue, + .urb_dequeue = xhci_urb_dequeue, + .alloc_dev = xhci_alloc_dev, + .free_dev = xhci_free_dev, + .add_endpoint = xhci_add_endpoint, + .drop_endpoint = xhci_drop_endpoint, + .check_bandwidth = xhci_check_bandwidth, + .reset_bandwidth = xhci_reset_bandwidth, + .address_device = xhci_address_device, + + /* + * scheduling support + */ + .get_frame_number = xhci_get_frame, + + /* Root hub support */ + .hub_control = xhci_hub_control, + .hub_status_data = xhci_hub_status_data, +}; + +/*-------------------------------------------------------------------------*/ + +/* PCI driver selection metadata; PCI hotplugging uses this */ +static const struct pci_device_id pci_ids[] = { { + /* handle any USB 3.0 xHCI controller */ + PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0), + .driver_data = (unsigned long) &xhci_pci_hc_driver, + }, + { /* end: all zeroes */ } +}; +MODULE_DEVICE_TABLE(pci, pci_ids); + +/* pci driver glue; this is a "new style" PCI driver module */ +static struct pci_driver xhci_pci_driver = { + .name = (char *) hcd_name, + .id_table = pci_ids, + + .probe = usb_hcd_pci_probe, + .remove = usb_hcd_pci_remove, + /* suspend and resume implemented later */ + + .shutdown = usb_hcd_pci_shutdown, +}; + +int xhci_register_pci() +{ + return pci_register_driver(&xhci_pci_driver); +} + +void xhci_unregister_pci() +{ + pci_unregister_driver(&xhci_pci_driver); +} diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c new file mode 100644 index 000000000000..02d81985c454 --- /dev/null +++ b/drivers/usb/host/xhci-ring.c @@ -0,0 +1,1648 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/* + * Ring initialization rules: + * 1. Each segment is initialized to zero, except for link TRBs. + * 2. Ring cycle state = 0. This represents Producer Cycle State (PCS) or + * Consumer Cycle State (CCS), depending on ring function. + * 3. Enqueue pointer = dequeue pointer = address of first TRB in the segment. + * + * Ring behavior rules: + * 1. A ring is empty if enqueue == dequeue. This means there will always be at + * least one free TRB in the ring. This is useful if you want to turn that + * into a link TRB and expand the ring. + * 2. When incrementing an enqueue or dequeue pointer, if the next TRB is a + * link TRB, then load the pointer with the address in the link TRB. If the + * link TRB had its toggle bit set, you may need to update the ring cycle + * state (see cycle bit rules). You may have to do this multiple times + * until you reach a non-link TRB. + * 3. A ring is full if enqueue++ (for the definition of increment above) + * equals the dequeue pointer. + * + * Cycle bit rules: + * 1. When a consumer increments a dequeue pointer and encounters a toggle bit + * in a link TRB, it must toggle the ring cycle state. + * 2. When a producer increments an enqueue pointer and encounters a toggle bit + * in a link TRB, it must toggle the ring cycle state. + * + * Producer rules: + * 1. Check if ring is full before you enqueue. + * 2. Write the ring cycle state to the cycle bit in the TRB you're enqueuing. + * Update enqueue pointer between each write (which may update the ring + * cycle state). + * 3. Notify consumer. If SW is producer, it rings the doorbell for command + * and endpoint rings. If HC is the producer for the event ring, + * and it generates an interrupt according to interrupt modulation rules. + * + * Consumer rules: + * 1. Check if TRB belongs to you. If the cycle bit == your ring cycle state, + * the TRB is owned by the consumer. + * 2. Update dequeue pointer (which may update the ring cycle state) and + * continue processing TRBs until you reach a TRB which is not owned by you. + * 3. Notify the producer. SW is the consumer for the event ring, and it + * updates event ring dequeue pointer. HC is the consumer for the command and + * endpoint rings; it generates events on the event ring for these. + */ + +#include <linux/scatterlist.h> +#include "xhci.h" + +/* + * Returns zero if the TRB isn't in this segment, otherwise it returns the DMA + * address of the TRB. + */ +dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, + union xhci_trb *trb) +{ + unsigned long segment_offset; + + if (!seg || !trb || trb < seg->trbs) + return 0; + /* offset in TRBs */ + segment_offset = trb - seg->trbs; + if (segment_offset > TRBS_PER_SEGMENT) + return 0; + return seg->dma + (segment_offset * sizeof(*trb)); +} + +/* Does this link TRB point to the first segment in a ring, + * or was the previous TRB the last TRB on the last segment in the ERST? + */ +static inline bool last_trb_on_last_seg(struct xhci_hcd *xhci, struct xhci_ring *ring, + struct xhci_segment *seg, union xhci_trb *trb) +{ + if (ring == xhci->event_ring) + return (trb == &seg->trbs[TRBS_PER_SEGMENT]) && + (seg->next == xhci->event_ring->first_seg); + else + return trb->link.control & LINK_TOGGLE; +} + +/* Is this TRB a link TRB or was the last TRB the last TRB in this event ring + * segment? I.e. would the updated event TRB pointer step off the end of the + * event seg? + */ +static inline int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, + struct xhci_segment *seg, union xhci_trb *trb) +{ + if (ring == xhci->event_ring) + return trb == &seg->trbs[TRBS_PER_SEGMENT]; + else + return (trb->link.control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK); +} + +/* Updates trb to point to the next TRB in the ring, and updates seg if the next + * TRB is in a new segment. This does not skip over link TRBs, and it does not + * effect the ring dequeue or enqueue pointers. + */ +static void next_trb(struct xhci_hcd *xhci, + struct xhci_ring *ring, + struct xhci_segment **seg, + union xhci_trb **trb) +{ + if (last_trb(xhci, ring, *seg, *trb)) { + *seg = (*seg)->next; + *trb = ((*seg)->trbs); + } else { + *trb = (*trb)++; + } +} + +/* + * See Cycle bit rules. SW is the consumer for the event ring only. + * Don't make a ring full of link TRBs. That would be dumb and this would loop. + */ +static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer) +{ + union xhci_trb *next = ++(ring->dequeue); + + ring->deq_updates++; + /* Update the dequeue pointer further if that was a link TRB or we're at + * the end of an event ring segment (which doesn't have link TRBS) + */ + while (last_trb(xhci, ring, ring->deq_seg, next)) { + if (consumer && last_trb_on_last_seg(xhci, ring, ring->deq_seg, next)) { + ring->cycle_state = (ring->cycle_state ? 0 : 1); + if (!in_interrupt()) + xhci_dbg(xhci, "Toggle cycle state for ring %p = %i\n", + ring, + (unsigned int) ring->cycle_state); + } + ring->deq_seg = ring->deq_seg->next; + ring->dequeue = ring->deq_seg->trbs; + next = ring->dequeue; + } +} + +/* + * See Cycle bit rules. SW is the consumer for the event ring only. + * Don't make a ring full of link TRBs. That would be dumb and this would loop. + * + * If we've just enqueued a TRB that is in the middle of a TD (meaning the + * chain bit is set), then set the chain bit in all the following link TRBs. + * If we've enqueued the last TRB in a TD, make sure the following link TRBs + * have their chain bit cleared (so that each Link TRB is a separate TD). + * + * Section 6.4.4.1 of the 0.95 spec says link TRBs cannot have the chain bit + * set, but other sections talk about dealing with the chain bit set. + * Assume section 6.4.4.1 is wrong, and the chain bit can be set in a Link TRB. + */ +static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer) +{ + u32 chain; + union xhci_trb *next; + + chain = ring->enqueue->generic.field[3] & TRB_CHAIN; + next = ++(ring->enqueue); + + ring->enq_updates++; + /* Update the dequeue pointer further if that was a link TRB or we're at + * the end of an event ring segment (which doesn't have link TRBS) + */ + while (last_trb(xhci, ring, ring->enq_seg, next)) { + if (!consumer) { + if (ring != xhci->event_ring) { + next->link.control &= ~TRB_CHAIN; + next->link.control |= chain; + /* Give this link TRB to the hardware */ + wmb(); + if (next->link.control & TRB_CYCLE) + next->link.control &= (u32) ~TRB_CYCLE; + else + next->link.control |= (u32) TRB_CYCLE; + } + /* Toggle the cycle bit after the last ring segment. */ + if (last_trb_on_last_seg(xhci, ring, ring->enq_seg, next)) { + ring->cycle_state = (ring->cycle_state ? 0 : 1); + if (!in_interrupt()) + xhci_dbg(xhci, "Toggle cycle state for ring %p = %i\n", + ring, + (unsigned int) ring->cycle_state); + } + } + ring->enq_seg = ring->enq_seg->next; + ring->enqueue = ring->enq_seg->trbs; + next = ring->enqueue; + } +} + +/* + * Check to see if there's room to enqueue num_trbs on the ring. See rules + * above. + * FIXME: this would be simpler and faster if we just kept track of the number + * of free TRBs in a ring. + */ +static int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, + unsigned int num_trbs) +{ + int i; + union xhci_trb *enq = ring->enqueue; + struct xhci_segment *enq_seg = ring->enq_seg; + + /* Check if ring is empty */ + if (enq == ring->dequeue) + return 1; + /* Make sure there's an extra empty TRB available */ + for (i = 0; i <= num_trbs; ++i) { + if (enq == ring->dequeue) + return 0; + enq++; + while (last_trb(xhci, ring, enq_seg, enq)) { + enq_seg = enq_seg->next; + enq = enq_seg->trbs; + } + } + return 1; +} + +void xhci_set_hc_event_deq(struct xhci_hcd *xhci) +{ + u32 temp; + dma_addr_t deq; + + deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, + xhci->event_ring->dequeue); + if (deq == 0 && !in_interrupt()) + xhci_warn(xhci, "WARN something wrong with SW event ring " + "dequeue ptr.\n"); + /* Update HC event ring dequeue pointer */ + temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]); + temp &= ERST_PTR_MASK; + if (!in_interrupt()) + xhci_dbg(xhci, "// Write event ring dequeue pointer\n"); + xhci_writel(xhci, 0, &xhci->ir_set->erst_dequeue[1]); + xhci_writel(xhci, (deq & ~ERST_PTR_MASK) | temp, + &xhci->ir_set->erst_dequeue[0]); +} + +/* Ring the host controller doorbell after placing a command on the ring */ +void xhci_ring_cmd_db(struct xhci_hcd *xhci) +{ + u32 temp; + + xhci_dbg(xhci, "// Ding dong!\n"); + temp = xhci_readl(xhci, &xhci->dba->doorbell[0]) & DB_MASK; + xhci_writel(xhci, temp | DB_TARGET_HOST, &xhci->dba->doorbell[0]); + /* Flush PCI posted writes */ + xhci_readl(xhci, &xhci->dba->doorbell[0]); +} + +static void ring_ep_doorbell(struct xhci_hcd *xhci, + unsigned int slot_id, + unsigned int ep_index) +{ + struct xhci_ring *ep_ring; + u32 field; + __u32 __iomem *db_addr = &xhci->dba->doorbell[slot_id]; + + ep_ring = xhci->devs[slot_id]->ep_rings[ep_index]; + /* Don't ring the doorbell for this endpoint if there are pending + * cancellations because the we don't want to interrupt processing. + */ + if (!ep_ring->cancels_pending && !(ep_ring->state & SET_DEQ_PENDING)) { + field = xhci_readl(xhci, db_addr) & DB_MASK; + xhci_writel(xhci, field | EPI_TO_DB(ep_index), db_addr); + /* Flush PCI posted writes - FIXME Matthew Wilcox says this + * isn't time-critical and we shouldn't make the CPU wait for + * the flush. + */ + xhci_readl(xhci, db_addr); + } +} + +/* + * Find the segment that trb is in. Start searching in start_seg. + * If we must move past a segment that has a link TRB with a toggle cycle state + * bit set, then we will toggle the value pointed at by cycle_state. + */ +static struct xhci_segment *find_trb_seg( + struct xhci_segment *start_seg, + union xhci_trb *trb, int *cycle_state) +{ + struct xhci_segment *cur_seg = start_seg; + struct xhci_generic_trb *generic_trb; + + while (cur_seg->trbs > trb || + &cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) { + generic_trb = &cur_seg->trbs[TRBS_PER_SEGMENT - 1].generic; + if (TRB_TYPE(generic_trb->field[3]) == TRB_LINK && + (generic_trb->field[3] & LINK_TOGGLE)) + *cycle_state = ~(*cycle_state) & 0x1; + cur_seg = cur_seg->next; + if (cur_seg == start_seg) + /* Looped over the entire list. Oops! */ + return 0; + } + return cur_seg; +} + +struct dequeue_state { + struct xhci_segment *new_deq_seg; + union xhci_trb *new_deq_ptr; + int new_cycle_state; +}; + +/* + * Move the xHC's endpoint ring dequeue pointer past cur_td. + * Record the new state of the xHC's endpoint ring dequeue segment, + * dequeue pointer, and new consumer cycle state in state. + * Update our internal representation of the ring's dequeue pointer. + * + * We do this in three jumps: + * - First we update our new ring state to be the same as when the xHC stopped. + * - Then we traverse the ring to find the segment that contains + * the last TRB in the TD. We toggle the xHC's new cycle state when we pass + * any link TRBs with the toggle cycle bit set. + * - Finally we move the dequeue state one TRB further, toggling the cycle bit + * if we've moved it past a link TRB with the toggle cycle bit set. + */ +static void find_new_dequeue_state(struct xhci_hcd *xhci, + unsigned int slot_id, unsigned int ep_index, + struct xhci_td *cur_td, struct dequeue_state *state) +{ + struct xhci_virt_device *dev = xhci->devs[slot_id]; + struct xhci_ring *ep_ring = dev->ep_rings[ep_index]; + struct xhci_generic_trb *trb; + + state->new_cycle_state = 0; + state->new_deq_seg = find_trb_seg(cur_td->start_seg, + ep_ring->stopped_trb, + &state->new_cycle_state); + if (!state->new_deq_seg) + BUG(); + /* Dig out the cycle state saved by the xHC during the stop ep cmd */ + state->new_cycle_state = 0x1 & dev->out_ctx->ep[ep_index].deq[0]; + + state->new_deq_ptr = cur_td->last_trb; + state->new_deq_seg = find_trb_seg(state->new_deq_seg, + state->new_deq_ptr, + &state->new_cycle_state); + if (!state->new_deq_seg) + BUG(); + + trb = &state->new_deq_ptr->generic; + if (TRB_TYPE(trb->field[3]) == TRB_LINK && + (trb->field[3] & LINK_TOGGLE)) + state->new_cycle_state = ~(state->new_cycle_state) & 0x1; + next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr); + + /* Don't update the ring cycle state for the producer (us). */ + ep_ring->dequeue = state->new_deq_ptr; + ep_ring->deq_seg = state->new_deq_seg; +} + +static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, + struct xhci_td *cur_td) +{ + struct xhci_segment *cur_seg; + union xhci_trb *cur_trb; + + for (cur_seg = cur_td->start_seg, cur_trb = cur_td->first_trb; + true; + next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) { + if ((cur_trb->generic.field[3] & TRB_TYPE_BITMASK) == + TRB_TYPE(TRB_LINK)) { + /* Unchain any chained Link TRBs, but + * leave the pointers intact. + */ + cur_trb->generic.field[3] &= ~TRB_CHAIN; + xhci_dbg(xhci, "Cancel (unchain) link TRB\n"); + xhci_dbg(xhci, "Address = %p (0x%llx dma); " + "in seg %p (0x%llx dma)\n", + cur_trb, + (unsigned long long)xhci_trb_virt_to_dma(cur_seg, cur_trb), + cur_seg, + (unsigned long long)cur_seg->dma); + } else { + cur_trb->generic.field[0] = 0; + cur_trb->generic.field[1] = 0; + cur_trb->generic.field[2] = 0; + /* Preserve only the cycle bit of this TRB */ + cur_trb->generic.field[3] &= TRB_CYCLE; + cur_trb->generic.field[3] |= TRB_TYPE(TRB_TR_NOOP); + xhci_dbg(xhci, "Cancel TRB %p (0x%llx dma) " + "in seg %p (0x%llx dma)\n", + cur_trb, + (unsigned long long)xhci_trb_virt_to_dma(cur_seg, cur_trb), + cur_seg, + (unsigned long long)cur_seg->dma); + } + if (cur_trb == cur_td->last_trb) + break; + } +} + +static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id, + unsigned int ep_index, struct xhci_segment *deq_seg, + union xhci_trb *deq_ptr, u32 cycle_state); + +/* + * When we get a command completion for a Stop Endpoint Command, we need to + * unlink any cancelled TDs from the ring. There are two ways to do that: + * + * 1. If the HW was in the middle of processing the TD that needs to be + * cancelled, then we must move the ring's dequeue pointer past the last TRB + * in the TD with a Set Dequeue Pointer Command. + * 2. Otherwise, we turn all the TRBs in the TD into No-op TRBs (with the chain + * bit cleared) so that the HW will skip over them. + */ +static void handle_stopped_endpoint(struct xhci_hcd *xhci, + union xhci_trb *trb) +{ + unsigned int slot_id; + unsigned int ep_index; + struct xhci_ring *ep_ring; + struct list_head *entry; + struct xhci_td *cur_td = 0; + struct xhci_td *last_unlinked_td; + + struct dequeue_state deq_state; +#ifdef CONFIG_USB_HCD_STAT + ktime_t stop_time = ktime_get(); +#endif + + memset(&deq_state, 0, sizeof(deq_state)); + slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]); + ep_index = TRB_TO_EP_INDEX(trb->generic.field[3]); + ep_ring = xhci->devs[slot_id]->ep_rings[ep_index]; + + if (list_empty(&ep_ring->cancelled_td_list)) + return; + + /* Fix up the ep ring first, so HW stops executing cancelled TDs. + * We have the xHCI lock, so nothing can modify this list until we drop + * it. We're also in the event handler, so we can't get re-interrupted + * if another Stop Endpoint command completes + */ + list_for_each(entry, &ep_ring->cancelled_td_list) { + cur_td = list_entry(entry, struct xhci_td, cancelled_td_list); + xhci_dbg(xhci, "Cancelling TD starting at %p, 0x%llx (dma).\n", + cur_td->first_trb, + (unsigned long long)xhci_trb_virt_to_dma(cur_td->start_seg, cur_td->first_trb)); + /* + * If we stopped on the TD we need to cancel, then we have to + * move the xHC endpoint ring dequeue pointer past this TD. + */ + if (cur_td == ep_ring->stopped_td) + find_new_dequeue_state(xhci, slot_id, ep_index, cur_td, + &deq_state); + else + td_to_noop(xhci, ep_ring, cur_td); + /* + * The event handler won't see a completion for this TD anymore, + * so remove it from the endpoint ring's TD list. Keep it in + * the cancelled TD list for URB completion later. + */ + list_del(&cur_td->td_list); + ep_ring->cancels_pending--; + } + last_unlinked_td = cur_td; + + /* If necessary, queue a Set Transfer Ring Dequeue Pointer command */ + if (deq_state.new_deq_ptr && deq_state.new_deq_seg) { + xhci_dbg(xhci, "Set TR Deq Ptr cmd, new deq seg = %p (0x%llx dma), " + "new deq ptr = %p (0x%llx dma), new cycle = %u\n", + deq_state.new_deq_seg, + (unsigned long long)deq_state.new_deq_seg->dma, + deq_state.new_deq_ptr, + (unsigned long long)xhci_trb_virt_to_dma(deq_state.new_deq_seg, deq_state.new_deq_ptr), + deq_state.new_cycle_state); + queue_set_tr_deq(xhci, slot_id, ep_index, + deq_state.new_deq_seg, + deq_state.new_deq_ptr, + (u32) deq_state.new_cycle_state); + /* Stop the TD queueing code from ringing the doorbell until + * this command completes. The HC won't set the dequeue pointer + * if the ring is running, and ringing the doorbell starts the + * ring running. + */ + ep_ring->state |= SET_DEQ_PENDING; + xhci_ring_cmd_db(xhci); + } else { + /* Otherwise just ring the doorbell to restart the ring */ + ring_ep_doorbell(xhci, slot_id, ep_index); + } + + /* + * Drop the lock and complete the URBs in the cancelled TD list. + * New TDs to be cancelled might be added to the end of the list before + * we can complete all the URBs for the TDs we already unlinked. + * So stop when we've completed the URB for the last TD we unlinked. + */ + do { + cur_td = list_entry(ep_ring->cancelled_td_list.next, + struct xhci_td, cancelled_td_list); + list_del(&cur_td->cancelled_td_list); + + /* Clean up the cancelled URB */ +#ifdef CONFIG_USB_HCD_STAT + hcd_stat_update(xhci->tp_stat, cur_td->urb->actual_length, + ktime_sub(stop_time, cur_td->start_time)); +#endif + cur_td->urb->hcpriv = NULL; + usb_hcd_unlink_urb_from_ep(xhci_to_hcd(xhci), cur_td->urb); + + xhci_dbg(xhci, "Giveback cancelled URB %p\n", cur_td->urb); + spin_unlock(&xhci->lock); + /* Doesn't matter what we pass for status, since the core will + * just overwrite it (because the URB has been unlinked). + */ + usb_hcd_giveback_urb(xhci_to_hcd(xhci), cur_td->urb, 0); + kfree(cur_td); + + spin_lock(&xhci->lock); + } while (cur_td != last_unlinked_td); + + /* Return to the event handler with xhci->lock re-acquired */ +} + +/* + * When we get a completion for a Set Transfer Ring Dequeue Pointer command, + * we need to clear the set deq pending flag in the endpoint ring state, so that + * the TD queueing code can ring the doorbell again. We also need to ring the + * endpoint doorbell to restart the ring, but only if there aren't more + * cancellations pending. + */ +static void handle_set_deq_completion(struct xhci_hcd *xhci, + struct xhci_event_cmd *event, + union xhci_trb *trb) +{ + unsigned int slot_id; + unsigned int ep_index; + struct xhci_ring *ep_ring; + struct xhci_virt_device *dev; + + slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]); + ep_index = TRB_TO_EP_INDEX(trb->generic.field[3]); + dev = xhci->devs[slot_id]; + ep_ring = dev->ep_rings[ep_index]; + + if (GET_COMP_CODE(event->status) != COMP_SUCCESS) { + unsigned int ep_state; + unsigned int slot_state; + + switch (GET_COMP_CODE(event->status)) { + case COMP_TRB_ERR: + xhci_warn(xhci, "WARN Set TR Deq Ptr cmd invalid because " + "of stream ID configuration\n"); + break; + case COMP_CTX_STATE: + xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due " + "to incorrect slot or ep state.\n"); + ep_state = dev->out_ctx->ep[ep_index].ep_info; + ep_state &= EP_STATE_MASK; + slot_state = dev->out_ctx->slot.dev_state; + slot_state = GET_SLOT_STATE(slot_state); + xhci_dbg(xhci, "Slot state = %u, EP state = %u\n", + slot_state, ep_state); + break; + case COMP_EBADSLT: + xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed because " + "slot %u was not enabled.\n", slot_id); + break; + default: + xhci_warn(xhci, "WARN Set TR Deq Ptr cmd with unknown " + "completion code of %u.\n", + GET_COMP_CODE(event->status)); + break; + } + /* OK what do we do now? The endpoint state is hosed, and we + * should never get to this point if the synchronization between + * queueing, and endpoint state are correct. This might happen + * if the device gets disconnected after we've finished + * cancelling URBs, which might not be an error... + */ + } else { + xhci_dbg(xhci, "Successful Set TR Deq Ptr cmd, deq[0] = 0x%x, " + "deq[1] = 0x%x.\n", + dev->out_ctx->ep[ep_index].deq[0], + dev->out_ctx->ep[ep_index].deq[1]); + } + + ep_ring->state &= ~SET_DEQ_PENDING; + ring_ep_doorbell(xhci, slot_id, ep_index); +} + + +static void handle_cmd_completion(struct xhci_hcd *xhci, + struct xhci_event_cmd *event) +{ + int slot_id = TRB_TO_SLOT_ID(event->flags); + u64 cmd_dma; + dma_addr_t cmd_dequeue_dma; + + cmd_dma = (((u64) event->cmd_trb[1]) << 32) + event->cmd_trb[0]; + cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg, + xhci->cmd_ring->dequeue); + /* Is the command ring deq ptr out of sync with the deq seg ptr? */ + if (cmd_dequeue_dma == 0) { + xhci->error_bitmask |= 1 << 4; + return; + } + /* Does the DMA address match our internal dequeue pointer address? */ + if (cmd_dma != (u64) cmd_dequeue_dma) { + xhci->error_bitmask |= 1 << 5; + return; + } + switch (xhci->cmd_ring->dequeue->generic.field[3] & TRB_TYPE_BITMASK) { + case TRB_TYPE(TRB_ENABLE_SLOT): + if (GET_COMP_CODE(event->status) == COMP_SUCCESS) + xhci->slot_id = slot_id; + else + xhci->slot_id = 0; + complete(&xhci->addr_dev); + break; + case TRB_TYPE(TRB_DISABLE_SLOT): + if (xhci->devs[slot_id]) + xhci_free_virt_device(xhci, slot_id); + break; + case TRB_TYPE(TRB_CONFIG_EP): + xhci->devs[slot_id]->cmd_status = GET_COMP_CODE(event->status); + complete(&xhci->devs[slot_id]->cmd_completion); + break; + case TRB_TYPE(TRB_ADDR_DEV): + xhci->devs[slot_id]->cmd_status = GET_COMP_CODE(event->status); + complete(&xhci->addr_dev); + break; + case TRB_TYPE(TRB_STOP_RING): + handle_stopped_endpoint(xhci, xhci->cmd_ring->dequeue); + break; + case TRB_TYPE(TRB_SET_DEQ): + handle_set_deq_completion(xhci, event, xhci->cmd_ring->dequeue); + break; + case TRB_TYPE(TRB_CMD_NOOP): + ++xhci->noops_handled; + break; + default: + /* Skip over unknown commands on the event ring */ + xhci->error_bitmask |= 1 << 6; + break; + } + inc_deq(xhci, xhci->cmd_ring, false); +} + +static void handle_port_status(struct xhci_hcd *xhci, + union xhci_trb *event) +{ + u32 port_id; + + /* Port status change events always have a successful completion code */ + if (GET_COMP_CODE(event->generic.field[2]) != COMP_SUCCESS) { + xhci_warn(xhci, "WARN: xHC returned failed port status event\n"); + xhci->error_bitmask |= 1 << 8; + } + /* FIXME: core doesn't care about all port link state changes yet */ + port_id = GET_PORT_ID(event->generic.field[0]); + xhci_dbg(xhci, "Port Status Change Event for port %d\n", port_id); + + /* Update event ring dequeue pointer before dropping the lock */ + inc_deq(xhci, xhci->event_ring, true); + xhci_set_hc_event_deq(xhci); + + spin_unlock(&xhci->lock); + /* Pass this up to the core */ + usb_hcd_poll_rh_status(xhci_to_hcd(xhci)); + spin_lock(&xhci->lock); +} + +/* + * This TD is defined by the TRBs starting at start_trb in start_seg and ending + * at end_trb, which may be in another segment. If the suspect DMA address is a + * TRB in this TD, this function returns that TRB's segment. Otherwise it + * returns 0. + */ +static struct xhci_segment *trb_in_td( + struct xhci_segment *start_seg, + union xhci_trb *start_trb, + union xhci_trb *end_trb, + dma_addr_t suspect_dma) +{ + dma_addr_t start_dma; + dma_addr_t end_seg_dma; + dma_addr_t end_trb_dma; + struct xhci_segment *cur_seg; + + start_dma = xhci_trb_virt_to_dma(start_seg, start_trb); + cur_seg = start_seg; + + do { + /* We may get an event for a Link TRB in the middle of a TD */ + end_seg_dma = xhci_trb_virt_to_dma(cur_seg, + &start_seg->trbs[TRBS_PER_SEGMENT - 1]); + /* If the end TRB isn't in this segment, this is set to 0 */ + end_trb_dma = xhci_trb_virt_to_dma(cur_seg, end_trb); + + if (end_trb_dma > 0) { + /* The end TRB is in this segment, so suspect should be here */ + if (start_dma <= end_trb_dma) { + if (suspect_dma >= start_dma && suspect_dma <= end_trb_dma) + return cur_seg; + } else { + /* Case for one segment with + * a TD wrapped around to the top + */ + if ((suspect_dma >= start_dma && + suspect_dma <= end_seg_dma) || + (suspect_dma >= cur_seg->dma && + suspect_dma <= end_trb_dma)) + return cur_seg; + } + return 0; + } else { + /* Might still be somewhere in this segment */ + if (suspect_dma >= start_dma && suspect_dma <= end_seg_dma) + return cur_seg; + } + cur_seg = cur_seg->next; + start_dma = xhci_trb_virt_to_dma(cur_seg, &cur_seg->trbs[0]); + } while (1); + +} + +/* + * If this function returns an error condition, it means it got a Transfer + * event with a corrupted Slot ID, Endpoint ID, or TRB DMA address. + * At this point, the host controller is probably hosed and should be reset. + */ +static int handle_tx_event(struct xhci_hcd *xhci, + struct xhci_transfer_event *event) +{ + struct xhci_virt_device *xdev; + struct xhci_ring *ep_ring; + int ep_index; + struct xhci_td *td = 0; + dma_addr_t event_dma; + struct xhci_segment *event_seg; + union xhci_trb *event_trb; + struct urb *urb = 0; + int status = -EINPROGRESS; + + xdev = xhci->devs[TRB_TO_SLOT_ID(event->flags)]; + if (!xdev) { + xhci_err(xhci, "ERROR Transfer event pointed to bad slot\n"); + return -ENODEV; + } + + /* Endpoint ID is 1 based, our index is zero based */ + ep_index = TRB_TO_EP_ID(event->flags) - 1; + ep_ring = xdev->ep_rings[ep_index]; + if (!ep_ring || (xdev->out_ctx->ep[ep_index].ep_info & EP_STATE_MASK) == EP_STATE_DISABLED) { + xhci_err(xhci, "ERROR Transfer event pointed to disabled endpoint\n"); + return -ENODEV; + } + + event_dma = event->buffer[0]; + if (event->buffer[1] != 0) + xhci_warn(xhci, "WARN ignoring upper 32-bits of 64-bit TRB dma address\n"); + + /* This TRB should be in the TD at the head of this ring's TD list */ + if (list_empty(&ep_ring->td_list)) { + xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n", + TRB_TO_SLOT_ID(event->flags), ep_index); + xhci_dbg(xhci, "Event TRB with TRB type ID %u\n", + (unsigned int) (event->flags & TRB_TYPE_BITMASK)>>10); + xhci_print_trb_offsets(xhci, (union xhci_trb *) event); + urb = NULL; + goto cleanup; + } + td = list_entry(ep_ring->td_list.next, struct xhci_td, td_list); + + /* Is this a TRB in the currently executing TD? */ + event_seg = trb_in_td(ep_ring->deq_seg, ep_ring->dequeue, + td->last_trb, event_dma); + if (!event_seg) { + /* HC is busted, give up! */ + xhci_err(xhci, "ERROR Transfer event TRB DMA ptr not part of current TD\n"); + return -ESHUTDOWN; + } + event_trb = &event_seg->trbs[(event_dma - event_seg->dma) / sizeof(*event_trb)]; + xhci_dbg(xhci, "Event TRB with TRB type ID %u\n", + (unsigned int) (event->flags & TRB_TYPE_BITMASK)>>10); + xhci_dbg(xhci, "Offset 0x00 (buffer[0]) = 0x%x\n", + (unsigned int) event->buffer[0]); + xhci_dbg(xhci, "Offset 0x04 (buffer[0]) = 0x%x\n", + (unsigned int) event->buffer[1]); + xhci_dbg(xhci, "Offset 0x08 (transfer length) = 0x%x\n", + (unsigned int) event->transfer_len); + xhci_dbg(xhci, "Offset 0x0C (flags) = 0x%x\n", + (unsigned int) event->flags); + + /* Look for common error cases */ + switch (GET_COMP_CODE(event->transfer_len)) { + /* Skip codes that require special handling depending on + * transfer type + */ + case COMP_SUCCESS: + case COMP_SHORT_TX: + break; + case COMP_STOP: + xhci_dbg(xhci, "Stopped on Transfer TRB\n"); + break; + case COMP_STOP_INVAL: + xhci_dbg(xhci, "Stopped on No-op or Link TRB\n"); + break; + case COMP_STALL: + xhci_warn(xhci, "WARN: Stalled endpoint\n"); + status = -EPIPE; + break; + case COMP_TRB_ERR: + xhci_warn(xhci, "WARN: TRB error on endpoint\n"); + status = -EILSEQ; + break; + case COMP_TX_ERR: + xhci_warn(xhci, "WARN: transfer error on endpoint\n"); + status = -EPROTO; + break; + case COMP_DB_ERR: + xhci_warn(xhci, "WARN: HC couldn't access mem fast enough\n"); + status = -ENOSR; + break; + default: + xhci_warn(xhci, "ERROR Unknown event condition, HC probably busted\n"); + urb = NULL; + goto cleanup; + } + /* Now update the urb's actual_length and give back to the core */ + /* Was this a control transfer? */ + if (usb_endpoint_xfer_control(&td->urb->ep->desc)) { + xhci_debug_trb(xhci, xhci->event_ring->dequeue); + switch (GET_COMP_CODE(event->transfer_len)) { + case COMP_SUCCESS: + if (event_trb == ep_ring->dequeue) { + xhci_warn(xhci, "WARN: Success on ctrl setup TRB without IOC set??\n"); + status = -ESHUTDOWN; + } else if (event_trb != td->last_trb) { + xhci_warn(xhci, "WARN: Success on ctrl data TRB without IOC set??\n"); + status = -ESHUTDOWN; + } else { + xhci_dbg(xhci, "Successful control transfer!\n"); + status = 0; + } + break; + case COMP_SHORT_TX: + xhci_warn(xhci, "WARN: short transfer on control ep\n"); + status = -EREMOTEIO; + break; + default: + /* Others already handled above */ + break; + } + /* + * Did we transfer any data, despite the errors that might have + * happened? I.e. did we get past the setup stage? + */ + if (event_trb != ep_ring->dequeue) { + /* The event was for the status stage */ + if (event_trb == td->last_trb) { + td->urb->actual_length = + td->urb->transfer_buffer_length; + } else { + /* Maybe the event was for the data stage? */ + if (GET_COMP_CODE(event->transfer_len) != COMP_STOP_INVAL) + /* We didn't stop on a link TRB in the middle */ + td->urb->actual_length = + td->urb->transfer_buffer_length - + TRB_LEN(event->transfer_len); + } + } + } else { + switch (GET_COMP_CODE(event->transfer_len)) { + case COMP_SUCCESS: + /* Double check that the HW transferred everything. */ + if (event_trb != td->last_trb) { + xhci_warn(xhci, "WARN Successful completion " + "on short TX\n"); + if (td->urb->transfer_flags & URB_SHORT_NOT_OK) + status = -EREMOTEIO; + else + status = 0; + } else { + xhci_dbg(xhci, "Successful bulk transfer!\n"); + status = 0; + } + break; + case COMP_SHORT_TX: + if (td->urb->transfer_flags & URB_SHORT_NOT_OK) + status = -EREMOTEIO; + else + status = 0; + break; + default: + /* Others already handled above */ + break; + } + dev_dbg(&td->urb->dev->dev, + "ep %#x - asked for %d bytes, " + "%d bytes untransferred\n", + td->urb->ep->desc.bEndpointAddress, + td->urb->transfer_buffer_length, + TRB_LEN(event->transfer_len)); + /* Fast path - was this the last TRB in the TD for this URB? */ + if (event_trb == td->last_trb) { + if (TRB_LEN(event->transfer_len) != 0) { + td->urb->actual_length = + td->urb->transfer_buffer_length - + TRB_LEN(event->transfer_len); + if (td->urb->actual_length < 0) { + xhci_warn(xhci, "HC gave bad length " + "of %d bytes left\n", + TRB_LEN(event->transfer_len)); + td->urb->actual_length = 0; + } + if (td->urb->transfer_flags & URB_SHORT_NOT_OK) + status = -EREMOTEIO; + else + status = 0; + } else { + td->urb->actual_length = td->urb->transfer_buffer_length; + /* Ignore a short packet completion if the + * untransferred length was zero. + */ + status = 0; + } + } else { + /* Slow path - walk the list, starting from the dequeue + * pointer, to get the actual length transferred. + */ + union xhci_trb *cur_trb; + struct xhci_segment *cur_seg; + + td->urb->actual_length = 0; + for (cur_trb = ep_ring->dequeue, cur_seg = ep_ring->deq_seg; + cur_trb != event_trb; + next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) { + if (TRB_TYPE(cur_trb->generic.field[3]) != TRB_TR_NOOP && + TRB_TYPE(cur_trb->generic.field[3]) != TRB_LINK) + td->urb->actual_length += + TRB_LEN(cur_trb->generic.field[2]); + } + /* If the ring didn't stop on a Link or No-op TRB, add + * in the actual bytes transferred from the Normal TRB + */ + if (GET_COMP_CODE(event->transfer_len) != COMP_STOP_INVAL) + td->urb->actual_length += + TRB_LEN(cur_trb->generic.field[2]) - + TRB_LEN(event->transfer_len); + } + } + /* The Endpoint Stop Command completion will take care of + * any stopped TDs. A stopped TD may be restarted, so don't update the + * ring dequeue pointer or take this TD off any lists yet. + */ + if (GET_COMP_CODE(event->transfer_len) == COMP_STOP_INVAL || + GET_COMP_CODE(event->transfer_len) == COMP_STOP) { + ep_ring->stopped_td = td; + ep_ring->stopped_trb = event_trb; + } else { + /* Update ring dequeue pointer */ + while (ep_ring->dequeue != td->last_trb) + inc_deq(xhci, ep_ring, false); + inc_deq(xhci, ep_ring, false); + + /* Clean up the endpoint's TD list */ + urb = td->urb; + list_del(&td->td_list); + /* Was this TD slated to be cancelled but completed anyway? */ + if (!list_empty(&td->cancelled_td_list)) { + list_del(&td->cancelled_td_list); + ep_ring->cancels_pending--; + } + kfree(td); + urb->hcpriv = NULL; + } +cleanup: + inc_deq(xhci, xhci->event_ring, true); + xhci_set_hc_event_deq(xhci); + + /* FIXME for multi-TD URBs (who have buffers bigger than 64MB) */ + if (urb) { + usb_hcd_unlink_urb_from_ep(xhci_to_hcd(xhci), urb); + spin_unlock(&xhci->lock); + usb_hcd_giveback_urb(xhci_to_hcd(xhci), urb, status); + spin_lock(&xhci->lock); + } + return 0; +} + +/* + * This function handles all OS-owned events on the event ring. It may drop + * xhci->lock between event processing (e.g. to pass up port status changes). + */ +void xhci_handle_event(struct xhci_hcd *xhci) +{ + union xhci_trb *event; + int update_ptrs = 1; + int ret; + + if (!xhci->event_ring || !xhci->event_ring->dequeue) { + xhci->error_bitmask |= 1 << 1; + return; + } + + event = xhci->event_ring->dequeue; + /* Does the HC or OS own the TRB? */ + if ((event->event_cmd.flags & TRB_CYCLE) != + xhci->event_ring->cycle_state) { + xhci->error_bitmask |= 1 << 2; + return; + } + + /* FIXME: Handle more event types. */ + switch ((event->event_cmd.flags & TRB_TYPE_BITMASK)) { + case TRB_TYPE(TRB_COMPLETION): + handle_cmd_completion(xhci, &event->event_cmd); + break; + case TRB_TYPE(TRB_PORT_STATUS): + handle_port_status(xhci, event); + update_ptrs = 0; + break; + case TRB_TYPE(TRB_TRANSFER): + ret = handle_tx_event(xhci, &event->trans_event); + if (ret < 0) + xhci->error_bitmask |= 1 << 9; + else + update_ptrs = 0; + break; + default: + xhci->error_bitmask |= 1 << 3; + } + + if (update_ptrs) { + /* Update SW and HC event ring dequeue pointer */ + inc_deq(xhci, xhci->event_ring, true); + xhci_set_hc_event_deq(xhci); + } + /* Are there more items on the event ring? */ + xhci_handle_event(xhci); +} + +/**** Endpoint Ring Operations ****/ + +/* + * Generic function for queueing a TRB on a ring. + * The caller must have checked to make sure there's room on the ring. + */ +static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, + bool consumer, + u32 field1, u32 field2, u32 field3, u32 field4) +{ + struct xhci_generic_trb *trb; + + trb = &ring->enqueue->generic; + trb->field[0] = field1; + trb->field[1] = field2; + trb->field[2] = field3; + trb->field[3] = field4; + inc_enq(xhci, ring, consumer); +} + +/* + * Does various checks on the endpoint ring, and makes it ready to queue num_trbs. + * FIXME allocate segments if the ring is full. + */ +static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, + u32 ep_state, unsigned int num_trbs, gfp_t mem_flags) +{ + /* Make sure the endpoint has been added to xHC schedule */ + xhci_dbg(xhci, "Endpoint state = 0x%x\n", ep_state); + switch (ep_state) { + case EP_STATE_DISABLED: + /* + * USB core changed config/interfaces without notifying us, + * or hardware is reporting the wrong state. + */ + xhci_warn(xhci, "WARN urb submitted to disabled ep\n"); + return -ENOENT; + case EP_STATE_HALTED: + case EP_STATE_ERROR: + xhci_warn(xhci, "WARN waiting for halt or error on ep " + "to be cleared\n"); + /* FIXME event handling code for error needs to clear it */ + /* XXX not sure if this should be -ENOENT or not */ + return -EINVAL; + case EP_STATE_STOPPED: + case EP_STATE_RUNNING: + break; + default: + xhci_err(xhci, "ERROR unknown endpoint state for ep\n"); + /* + * FIXME issue Configure Endpoint command to try to get the HC + * back into a known state. + */ + return -EINVAL; + } + if (!room_on_ring(xhci, ep_ring, num_trbs)) { + /* FIXME allocate more room */ + xhci_err(xhci, "ERROR no room on ep ring\n"); + return -ENOMEM; + } + return 0; +} + +static int prepare_transfer(struct xhci_hcd *xhci, + struct xhci_virt_device *xdev, + unsigned int ep_index, + unsigned int num_trbs, + struct urb *urb, + struct xhci_td **td, + gfp_t mem_flags) +{ + int ret; + + ret = prepare_ring(xhci, xdev->ep_rings[ep_index], + xdev->out_ctx->ep[ep_index].ep_info & EP_STATE_MASK, + num_trbs, mem_flags); + if (ret) + return ret; + *td = kzalloc(sizeof(struct xhci_td), mem_flags); + if (!*td) + return -ENOMEM; + INIT_LIST_HEAD(&(*td)->td_list); + INIT_LIST_HEAD(&(*td)->cancelled_td_list); + + ret = usb_hcd_link_urb_to_ep(xhci_to_hcd(xhci), urb); + if (unlikely(ret)) { + kfree(*td); + return ret; + } + + (*td)->urb = urb; + urb->hcpriv = (void *) (*td); + /* Add this TD to the tail of the endpoint ring's TD list */ + list_add_tail(&(*td)->td_list, &xdev->ep_rings[ep_index]->td_list); + (*td)->start_seg = xdev->ep_rings[ep_index]->enq_seg; + (*td)->first_trb = xdev->ep_rings[ep_index]->enqueue; + + return 0; +} + +static unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb) +{ + int num_sgs, num_trbs, running_total, temp, i; + struct scatterlist *sg; + + sg = NULL; + num_sgs = urb->num_sgs; + temp = urb->transfer_buffer_length; + + xhci_dbg(xhci, "count sg list trbs: \n"); + num_trbs = 0; + for_each_sg(urb->sg->sg, sg, num_sgs, i) { + unsigned int previous_total_trbs = num_trbs; + unsigned int len = sg_dma_len(sg); + + /* Scatter gather list entries may cross 64KB boundaries */ + running_total = TRB_MAX_BUFF_SIZE - + (sg_dma_address(sg) & ((1 << TRB_MAX_BUFF_SHIFT) - 1)); + if (running_total != 0) + num_trbs++; + + /* How many more 64KB chunks to transfer, how many more TRBs? */ + while (running_total < sg_dma_len(sg)) { + num_trbs++; + running_total += TRB_MAX_BUFF_SIZE; + } + xhci_dbg(xhci, " sg #%d: dma = %#llx, len = %#x (%d), num_trbs = %d\n", + i, (unsigned long long)sg_dma_address(sg), + len, len, num_trbs - previous_total_trbs); + + len = min_t(int, len, temp); + temp -= len; + if (temp == 0) + break; + } + xhci_dbg(xhci, "\n"); + if (!in_interrupt()) + dev_dbg(&urb->dev->dev, "ep %#x - urb len = %d, sglist used, num_trbs = %d\n", + urb->ep->desc.bEndpointAddress, + urb->transfer_buffer_length, + num_trbs); + return num_trbs; +} + +static void check_trb_math(struct urb *urb, int num_trbs, int running_total) +{ + if (num_trbs != 0) + dev_dbg(&urb->dev->dev, "%s - ep %#x - Miscalculated number of " + "TRBs, %d left\n", __func__, + urb->ep->desc.bEndpointAddress, num_trbs); + if (running_total != urb->transfer_buffer_length) + dev_dbg(&urb->dev->dev, "%s - ep %#x - Miscalculated tx length, " + "queued %#x (%d), asked for %#x (%d)\n", + __func__, + urb->ep->desc.bEndpointAddress, + running_total, running_total, + urb->transfer_buffer_length, + urb->transfer_buffer_length); +} + +static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, + unsigned int ep_index, int start_cycle, + struct xhci_generic_trb *start_trb, struct xhci_td *td) +{ + /* + * Pass all the TRBs to the hardware at once and make sure this write + * isn't reordered. + */ + wmb(); + start_trb->field[3] |= start_cycle; + ring_ep_doorbell(xhci, slot_id, ep_index); +} + +static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, + struct urb *urb, int slot_id, unsigned int ep_index) +{ + struct xhci_ring *ep_ring; + unsigned int num_trbs; + struct xhci_td *td; + struct scatterlist *sg; + int num_sgs; + int trb_buff_len, this_sg_len, running_total; + bool first_trb; + u64 addr; + + struct xhci_generic_trb *start_trb; + int start_cycle; + + ep_ring = xhci->devs[slot_id]->ep_rings[ep_index]; + num_trbs = count_sg_trbs_needed(xhci, urb); + num_sgs = urb->num_sgs; + + trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id], + ep_index, num_trbs, urb, &td, mem_flags); + if (trb_buff_len < 0) + return trb_buff_len; + /* + * Don't give the first TRB to the hardware (by toggling the cycle bit) + * until we've finished creating all the other TRBs. The ring's cycle + * state may change as we enqueue the other TRBs, so save it too. + */ + start_trb = &ep_ring->enqueue->generic; + start_cycle = ep_ring->cycle_state; + + running_total = 0; + /* + * How much data is in the first TRB? + * + * There are three forces at work for TRB buffer pointers and lengths: + * 1. We don't want to walk off the end of this sg-list entry buffer. + * 2. The transfer length that the driver requested may be smaller than + * the amount of memory allocated for this scatter-gather list. + * 3. TRBs buffers can't cross 64KB boundaries. + */ + sg = urb->sg->sg; + addr = (u64) sg_dma_address(sg); + this_sg_len = sg_dma_len(sg); + trb_buff_len = TRB_MAX_BUFF_SIZE - + (addr & ((1 << TRB_MAX_BUFF_SHIFT) - 1)); + trb_buff_len = min_t(int, trb_buff_len, this_sg_len); + if (trb_buff_len > urb->transfer_buffer_length) + trb_buff_len = urb->transfer_buffer_length; + xhci_dbg(xhci, "First length to xfer from 1st sglist entry = %u\n", + trb_buff_len); + + first_trb = true; + /* Queue the first TRB, even if it's zero-length */ + do { + u32 field = 0; + + /* Don't change the cycle bit of the first TRB until later */ + if (first_trb) + first_trb = false; + else + field |= ep_ring->cycle_state; + + /* Chain all the TRBs together; clear the chain bit in the last + * TRB to indicate it's the last TRB in the chain. + */ + if (num_trbs > 1) { + field |= TRB_CHAIN; + } else { + /* FIXME - add check for ZERO_PACKET flag before this */ + td->last_trb = ep_ring->enqueue; + field |= TRB_IOC; + } + xhci_dbg(xhci, " sg entry: dma = %#x, len = %#x (%d), " + "64KB boundary at %#x, end dma = %#x\n", + (unsigned int) addr, trb_buff_len, trb_buff_len, + (unsigned int) (addr + TRB_MAX_BUFF_SIZE) & ~(TRB_MAX_BUFF_SIZE - 1), + (unsigned int) addr + trb_buff_len); + if (TRB_MAX_BUFF_SIZE - + (addr & ((1 << TRB_MAX_BUFF_SHIFT) - 1)) < trb_buff_len) { + xhci_warn(xhci, "WARN: sg dma xfer crosses 64KB boundaries!\n"); + xhci_dbg(xhci, "Next boundary at %#x, end dma = %#x\n", + (unsigned int) (addr + TRB_MAX_BUFF_SIZE) & ~(TRB_MAX_BUFF_SIZE - 1), + (unsigned int) addr + trb_buff_len); + } + queue_trb(xhci, ep_ring, false, + (u32) addr, + (u32) ((u64) addr >> 32), + TRB_LEN(trb_buff_len) | TRB_INTR_TARGET(0), + /* We always want to know if the TRB was short, + * or we won't get an event when it completes. + * (Unless we use event data TRBs, which are a + * waste of space and HC resources.) + */ + field | TRB_ISP | TRB_TYPE(TRB_NORMAL)); + --num_trbs; + running_total += trb_buff_len; + + /* Calculate length for next transfer -- + * Are we done queueing all the TRBs for this sg entry? + */ + this_sg_len -= trb_buff_len; + if (this_sg_len == 0) { + --num_sgs; + if (num_sgs == 0) + break; + sg = sg_next(sg); + addr = (u64) sg_dma_address(sg); + this_sg_len = sg_dma_len(sg); + } else { + addr += trb_buff_len; + } + + trb_buff_len = TRB_MAX_BUFF_SIZE - + (addr & ((1 << TRB_MAX_BUFF_SHIFT) - 1)); + trb_buff_len = min_t(int, trb_buff_len, this_sg_len); + if (running_total + trb_buff_len > urb->transfer_buffer_length) + trb_buff_len = + urb->transfer_buffer_length - running_total; + } while (running_total < urb->transfer_buffer_length); + + check_trb_math(urb, num_trbs, running_total); + giveback_first_trb(xhci, slot_id, ep_index, start_cycle, start_trb, td); + return 0; +} + +/* This is very similar to what ehci-q.c qtd_fill() does */ +int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, + struct urb *urb, int slot_id, unsigned int ep_index) +{ + struct xhci_ring *ep_ring; + struct xhci_td *td; + int num_trbs; + struct xhci_generic_trb *start_trb; + bool first_trb; + int start_cycle; + u32 field; + + int running_total, trb_buff_len, ret; + u64 addr; + + if (urb->sg) + return queue_bulk_sg_tx(xhci, mem_flags, urb, slot_id, ep_index); + + ep_ring = xhci->devs[slot_id]->ep_rings[ep_index]; + + num_trbs = 0; + /* How much data is (potentially) left before the 64KB boundary? */ + running_total = TRB_MAX_BUFF_SIZE - + (urb->transfer_dma & ((1 << TRB_MAX_BUFF_SHIFT) - 1)); + + /* If there's some data on this 64KB chunk, or we have to send a + * zero-length transfer, we need at least one TRB + */ + if (running_total != 0 || urb->transfer_buffer_length == 0) + num_trbs++; + /* How many more 64KB chunks to transfer, how many more TRBs? */ + while (running_total < urb->transfer_buffer_length) { + num_trbs++; + running_total += TRB_MAX_BUFF_SIZE; + } + /* FIXME: this doesn't deal with URB_ZERO_PACKET - need one more */ + + if (!in_interrupt()) + dev_dbg(&urb->dev->dev, "ep %#x - urb len = %#x (%d), addr = %#llx, num_trbs = %d\n", + urb->ep->desc.bEndpointAddress, + urb->transfer_buffer_length, + urb->transfer_buffer_length, + (unsigned long long)urb->transfer_dma, + num_trbs); + + ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, + num_trbs, urb, &td, mem_flags); + if (ret < 0) + return ret; + + /* + * Don't give the first TRB to the hardware (by toggling the cycle bit) + * until we've finished creating all the other TRBs. The ring's cycle + * state may change as we enqueue the other TRBs, so save it too. + */ + start_trb = &ep_ring->enqueue->generic; + start_cycle = ep_ring->cycle_state; + + running_total = 0; + /* How much data is in the first TRB? */ + addr = (u64) urb->transfer_dma; + trb_buff_len = TRB_MAX_BUFF_SIZE - + (urb->transfer_dma & ((1 << TRB_MAX_BUFF_SHIFT) - 1)); + if (urb->transfer_buffer_length < trb_buff_len) + trb_buff_len = urb->transfer_buffer_length; + + first_trb = true; + + /* Queue the first TRB, even if it's zero-length */ + do { + field = 0; + + /* Don't change the cycle bit of the first TRB until later */ + if (first_trb) + first_trb = false; + else + field |= ep_ring->cycle_state; + + /* Chain all the TRBs together; clear the chain bit in the last + * TRB to indicate it's the last TRB in the chain. + */ + if (num_trbs > 1) { + field |= TRB_CHAIN; + } else { + /* FIXME - add check for ZERO_PACKET flag before this */ + td->last_trb = ep_ring->enqueue; + field |= TRB_IOC; + } + queue_trb(xhci, ep_ring, false, + (u32) addr, + (u32) ((u64) addr >> 32), + TRB_LEN(trb_buff_len) | TRB_INTR_TARGET(0), + /* We always want to know if the TRB was short, + * or we won't get an event when it completes. + * (Unless we use event data TRBs, which are a + * waste of space and HC resources.) + */ + field | TRB_ISP | TRB_TYPE(TRB_NORMAL)); + --num_trbs; + running_total += trb_buff_len; + + /* Calculate length for next transfer */ + addr += trb_buff_len; + trb_buff_len = urb->transfer_buffer_length - running_total; + if (trb_buff_len > TRB_MAX_BUFF_SIZE) + trb_buff_len = TRB_MAX_BUFF_SIZE; + } while (running_total < urb->transfer_buffer_length); + + check_trb_math(urb, num_trbs, running_total); + giveback_first_trb(xhci, slot_id, ep_index, start_cycle, start_trb, td); + return 0; +} + +/* Caller must have locked xhci->lock */ +int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, + struct urb *urb, int slot_id, unsigned int ep_index) +{ + struct xhci_ring *ep_ring; + int num_trbs; + int ret; + struct usb_ctrlrequest *setup; + struct xhci_generic_trb *start_trb; + int start_cycle; + u32 field; + struct xhci_td *td; + + ep_ring = xhci->devs[slot_id]->ep_rings[ep_index]; + + /* + * Need to copy setup packet into setup TRB, so we can't use the setup + * DMA address. + */ + if (!urb->setup_packet) + return -EINVAL; + + if (!in_interrupt()) + xhci_dbg(xhci, "Queueing ctrl tx for slot id %d, ep %d\n", + slot_id, ep_index); + /* 1 TRB for setup, 1 for status */ + num_trbs = 2; + /* + * Don't need to check if we need additional event data and normal TRBs, + * since data in control transfers will never get bigger than 16MB + * XXX: can we get a buffer that crosses 64KB boundaries? + */ + if (urb->transfer_buffer_length > 0) + num_trbs++; + ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, num_trbs, + urb, &td, mem_flags); + if (ret < 0) + return ret; + + /* + * Don't give the first TRB to the hardware (by toggling the cycle bit) + * until we've finished creating all the other TRBs. The ring's cycle + * state may change as we enqueue the other TRBs, so save it too. + */ + start_trb = &ep_ring->enqueue->generic; + start_cycle = ep_ring->cycle_state; + + /* Queue setup TRB - see section 6.4.1.2.1 */ + /* FIXME better way to translate setup_packet into two u32 fields? */ + setup = (struct usb_ctrlrequest *) urb->setup_packet; + queue_trb(xhci, ep_ring, false, + /* FIXME endianness is probably going to bite my ass here. */ + setup->bRequestType | setup->bRequest << 8 | setup->wValue << 16, + setup->wIndex | setup->wLength << 16, + TRB_LEN(8) | TRB_INTR_TARGET(0), + /* Immediate data in pointer */ + TRB_IDT | TRB_TYPE(TRB_SETUP)); + + /* If there's data, queue data TRBs */ + field = 0; + if (urb->transfer_buffer_length > 0) { + if (setup->bRequestType & USB_DIR_IN) + field |= TRB_DIR_IN; + queue_trb(xhci, ep_ring, false, + lower_32_bits(urb->transfer_dma), + upper_32_bits(urb->transfer_dma), + TRB_LEN(urb->transfer_buffer_length) | TRB_INTR_TARGET(0), + /* Event on short tx */ + field | TRB_ISP | TRB_TYPE(TRB_DATA) | ep_ring->cycle_state); + } + + /* Save the DMA address of the last TRB in the TD */ + td->last_trb = ep_ring->enqueue; + + /* Queue status TRB - see Table 7 and sections 4.11.2.2 and 6.4.1.2.3 */ + /* If the device sent data, the status stage is an OUT transfer */ + if (urb->transfer_buffer_length > 0 && setup->bRequestType & USB_DIR_IN) + field = 0; + else + field = TRB_DIR_IN; + queue_trb(xhci, ep_ring, false, + 0, + 0, + TRB_INTR_TARGET(0), + /* Event on completion */ + field | TRB_IOC | TRB_TYPE(TRB_STATUS) | ep_ring->cycle_state); + + giveback_first_trb(xhci, slot_id, ep_index, start_cycle, start_trb, td); + return 0; +} + +/**** Command Ring Operations ****/ + +/* Generic function for queueing a command TRB on the command ring */ +static int queue_command(struct xhci_hcd *xhci, u32 field1, u32 field2, u32 field3, u32 field4) +{ + if (!room_on_ring(xhci, xhci->cmd_ring, 1)) { + if (!in_interrupt()) + xhci_err(xhci, "ERR: No room for command on command ring\n"); + return -ENOMEM; + } + queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3, + field4 | xhci->cmd_ring->cycle_state); + return 0; +} + +/* Queue a no-op command on the command ring */ +static int queue_cmd_noop(struct xhci_hcd *xhci) +{ + return queue_command(xhci, 0, 0, 0, TRB_TYPE(TRB_CMD_NOOP)); +} + +/* + * Place a no-op command on the command ring to test the command and + * event ring. + */ +void *xhci_setup_one_noop(struct xhci_hcd *xhci) +{ + if (queue_cmd_noop(xhci) < 0) + return NULL; + xhci->noops_submitted++; + return xhci_ring_cmd_db; +} + +/* Queue a slot enable or disable request on the command ring */ +int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id) +{ + return queue_command(xhci, 0, 0, 0, + TRB_TYPE(trb_type) | SLOT_ID_FOR_TRB(slot_id)); +} + +/* Queue an address device command TRB */ +int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, + u32 slot_id) +{ + return queue_command(xhci, in_ctx_ptr, 0, 0, + TRB_TYPE(TRB_ADDR_DEV) | SLOT_ID_FOR_TRB(slot_id)); +} + +/* Queue a configure endpoint command TRB */ +int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, + u32 slot_id) +{ + return queue_command(xhci, in_ctx_ptr, 0, 0, + TRB_TYPE(TRB_CONFIG_EP) | SLOT_ID_FOR_TRB(slot_id)); +} + +int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id, + unsigned int ep_index) +{ + u32 trb_slot_id = SLOT_ID_FOR_TRB(slot_id); + u32 trb_ep_index = EP_ID_FOR_TRB(ep_index); + u32 type = TRB_TYPE(TRB_STOP_RING); + + return queue_command(xhci, 0, 0, 0, + trb_slot_id | trb_ep_index | type); +} + +/* Set Transfer Ring Dequeue Pointer command. + * This should not be used for endpoints that have streams enabled. + */ +static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id, + unsigned int ep_index, struct xhci_segment *deq_seg, + union xhci_trb *deq_ptr, u32 cycle_state) +{ + dma_addr_t addr; + u32 trb_slot_id = SLOT_ID_FOR_TRB(slot_id); + u32 trb_ep_index = EP_ID_FOR_TRB(ep_index); + u32 type = TRB_TYPE(TRB_SET_DEQ); + + addr = xhci_trb_virt_to_dma(deq_seg, deq_ptr); + if (addr == 0) + xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr\n"); + xhci_warn(xhci, "WARN deq seg = %p, deq pt = %p\n", + deq_seg, deq_ptr); + return queue_command(xhci, (u32) addr | cycle_state, 0, 0, + trb_slot_id | trb_ep_index | type); +} diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h new file mode 100644 index 000000000000..8936eeb5588b --- /dev/null +++ b/drivers/usb/host/xhci.h @@ -0,0 +1,1157 @@ +/* + * xHCI host controller driver + * + * Copyright (C) 2008 Intel Corp. + * + * Author: Sarah Sharp + * Some code borrowed from the Linux EHCI driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __LINUX_XHCI_HCD_H +#define __LINUX_XHCI_HCD_H + +#include <linux/usb.h> +#include <linux/timer.h> + +#include "../core/hcd.h" +/* Code sharing between pci-quirks and xhci hcd */ +#include "xhci-ext-caps.h" + +/* xHCI PCI Configuration Registers */ +#define XHCI_SBRN_OFFSET (0x60) + +/* Max number of USB devices for any host controller - limit in section 6.1 */ +#define MAX_HC_SLOTS 256 +/* Section 5.3.3 - MaxPorts */ +#define MAX_HC_PORTS 127 + +/* + * xHCI register interface. + * This corresponds to the eXtensible Host Controller Interface (xHCI) + * Revision 0.95 specification + * + * Registers should always be accessed with double word or quad word accesses. + * + * Some xHCI implementations may support 64-bit address pointers. Registers + * with 64-bit address pointers should be written to with dword accesses by + * writing the low dword first (ptr[0]), then the high dword (ptr[1]) second. + * xHCI implementations that do not support 64-bit address pointers will ignore + * the high dword, and write order is irrelevant. + */ + +/** + * struct xhci_cap_regs - xHCI Host Controller Capability Registers. + * @hc_capbase: length of the capabilities register and HC version number + * @hcs_params1: HCSPARAMS1 - Structural Parameters 1 + * @hcs_params2: HCSPARAMS2 - Structural Parameters 2 + * @hcs_params3: HCSPARAMS3 - Structural Parameters 3 + * @hcc_params: HCCPARAMS - Capability Parameters + * @db_off: DBOFF - Doorbell array offset + * @run_regs_off: RTSOFF - Runtime register space offset + */ +struct xhci_cap_regs { + u32 hc_capbase; + u32 hcs_params1; + u32 hcs_params2; + u32 hcs_params3; + u32 hcc_params; + u32 db_off; + u32 run_regs_off; + /* Reserved up to (CAPLENGTH - 0x1C) */ +}; + +/* hc_capbase bitmasks */ +/* bits 7:0 - how long is the Capabilities register */ +#define HC_LENGTH(p) XHCI_HC_LENGTH(p) +/* bits 31:16 */ +#define HC_VERSION(p) (((p) >> 16) & 0xffff) + +/* HCSPARAMS1 - hcs_params1 - bitmasks */ +/* bits 0:7, Max Device Slots */ +#define HCS_MAX_SLOTS(p) (((p) >> 0) & 0xff) +#define HCS_SLOTS_MASK 0xff +/* bits 8:18, Max Interrupters */ +#define HCS_MAX_INTRS(p) (((p) >> 8) & 0x7ff) +/* bits 24:31, Max Ports - max value is 0x7F = 127 ports */ +#define HCS_MAX_PORTS(p) (((p) >> 24) & 0x7f) + +/* HCSPARAMS2 - hcs_params2 - bitmasks */ +/* bits 0:3, frames or uframes that SW needs to queue transactions + * ahead of the HW to meet periodic deadlines */ +#define HCS_IST(p) (((p) >> 0) & 0xf) +/* bits 4:7, max number of Event Ring segments */ +#define HCS_ERST_MAX(p) (((p) >> 4) & 0xf) +/* bit 26 Scratchpad restore - for save/restore HW state - not used yet */ +/* bits 27:31 number of Scratchpad buffers SW must allocate for the HW */ + +/* HCSPARAMS3 - hcs_params3 - bitmasks */ +/* bits 0:7, Max U1 to U0 latency for the roothub ports */ +#define HCS_U1_LATENCY(p) (((p) >> 0) & 0xff) +/* bits 16:31, Max U2 to U0 latency for the roothub ports */ +#define HCS_U2_LATENCY(p) (((p) >> 16) & 0xffff) + +/* HCCPARAMS - hcc_params - bitmasks */ +/* true: HC can use 64-bit address pointers */ +#define HCC_64BIT_ADDR(p) ((p) & (1 << 0)) +/* true: HC can do bandwidth negotiation */ +#define HCC_BANDWIDTH_NEG(p) ((p) & (1 << 1)) +/* true: HC uses 64-byte Device Context structures + * FIXME 64-byte context structures aren't supported yet. + */ +#define HCC_64BYTE_CONTEXT(p) ((p) & (1 << 2)) +/* true: HC has port power switches */ +#define HCC_PPC(p) ((p) & (1 << 3)) +/* true: HC has port indicators */ +#define HCS_INDICATOR(p) ((p) & (1 << 4)) +/* true: HC has Light HC Reset Capability */ +#define HCC_LIGHT_RESET(p) ((p) & (1 << 5)) +/* true: HC supports latency tolerance messaging */ +#define HCC_LTC(p) ((p) & (1 << 6)) +/* true: no secondary Stream ID Support */ +#define HCC_NSS(p) ((p) & (1 << 7)) +/* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */ +#define HCC_MAX_PSA (1 << ((((p) >> 12) & 0xf) + 1)) +/* Extended Capabilities pointer from PCI base - section 5.3.6 */ +#define HCC_EXT_CAPS(p) XHCI_HCC_EXT_CAPS(p) + +/* db_off bitmask - bits 0:1 reserved */ +#define DBOFF_MASK (~0x3) + +/* run_regs_off bitmask - bits 0:4 reserved */ +#define RTSOFF_MASK (~0x1f) + + +/* Number of registers per port */ +#define NUM_PORT_REGS 4 + +/** + * struct xhci_op_regs - xHCI Host Controller Operational Registers. + * @command: USBCMD - xHC command register + * @status: USBSTS - xHC status register + * @page_size: This indicates the page size that the host controller + * supports. If bit n is set, the HC supports a page size + * of 2^(n+12), up to a 128MB page size. + * 4K is the minimum page size. + * @cmd_ring: CRP - 64-bit Command Ring Pointer + * @dcbaa_ptr: DCBAAP - 64-bit Device Context Base Address Array Pointer + * @config_reg: CONFIG - Configure Register + * @port_status_base: PORTSCn - base address for Port Status and Control + * Each port has a Port Status and Control register, + * followed by a Port Power Management Status and Control + * register, a Port Link Info register, and a reserved + * register. + * @port_power_base: PORTPMSCn - base address for + * Port Power Management Status and Control + * @port_link_base: PORTLIn - base address for Port Link Info (current + * Link PM state and control) for USB 2.1 and USB 3.0 + * devices. + */ +struct xhci_op_regs { + u32 command; + u32 status; + u32 page_size; + u32 reserved1; + u32 reserved2; + u32 dev_notification; + u32 cmd_ring[2]; + /* rsvd: offset 0x20-2F */ + u32 reserved3[4]; + u32 dcbaa_ptr[2]; + u32 config_reg; + /* rsvd: offset 0x3C-3FF */ + u32 reserved4[241]; + /* port 1 registers, which serve as a base address for other ports */ + u32 port_status_base; + u32 port_power_base; + u32 port_link_base; + u32 reserved5; + /* registers for ports 2-255 */ + u32 reserved6[NUM_PORT_REGS*254]; +}; + +/* USBCMD - USB command - command bitmasks */ +/* start/stop HC execution - do not write unless HC is halted*/ +#define CMD_RUN XHCI_CMD_RUN +/* Reset HC - resets internal HC state machine and all registers (except + * PCI config regs). HC does NOT drive a USB reset on the downstream ports. + * The xHCI driver must reinitialize the xHC after setting this bit. + */ +#define CMD_RESET (1 << 1) +/* Event Interrupt Enable - a '1' allows interrupts from the host controller */ +#define CMD_EIE XHCI_CMD_EIE +/* Host System Error Interrupt Enable - get out-of-band signal for HC errors */ +#define CMD_HSEIE XHCI_CMD_HSEIE +/* bits 4:6 are reserved (and should be preserved on writes). */ +/* light reset (port status stays unchanged) - reset completed when this is 0 */ +#define CMD_LRESET (1 << 7) +/* FIXME: ignoring host controller save/restore state for now. */ +#define CMD_CSS (1 << 8) +#define CMD_CRS (1 << 9) +/* Enable Wrap Event - '1' means xHC generates an event when MFINDEX wraps. */ +#define CMD_EWE XHCI_CMD_EWE +/* MFINDEX power management - '1' means xHC can stop MFINDEX counter if all root + * hubs are in U3 (selective suspend), disconnect, disabled, or powered-off. + * '0' means the xHC can power it off if all ports are in the disconnect, + * disabled, or powered-off state. + */ +#define CMD_PM_INDEX (1 << 11) +/* bits 12:31 are reserved (and should be preserved on writes). */ + +/* USBSTS - USB status - status bitmasks */ +/* HC not running - set to 1 when run/stop bit is cleared. */ +#define STS_HALT XHCI_STS_HALT +/* serious error, e.g. PCI parity error. The HC will clear the run/stop bit. */ +#define STS_FATAL (1 << 2) +/* event interrupt - clear this prior to clearing any IP flags in IR set*/ +#define STS_EINT (1 << 3) +/* port change detect */ +#define STS_PORT (1 << 4) +/* bits 5:7 reserved and zeroed */ +/* save state status - '1' means xHC is saving state */ +#define STS_SAVE (1 << 8) +/* restore state status - '1' means xHC is restoring state */ +#define STS_RESTORE (1 << 9) +/* true: save or restore error */ +#define STS_SRE (1 << 10) +/* true: Controller Not Ready to accept doorbell or op reg writes after reset */ +#define STS_CNR XHCI_STS_CNR +/* true: internal Host Controller Error - SW needs to reset and reinitialize */ +#define STS_HCE (1 << 12) +/* bits 13:31 reserved and should be preserved */ + +/* + * DNCTRL - Device Notification Control Register - dev_notification bitmasks + * Generate a device notification event when the HC sees a transaction with a + * notification type that matches a bit set in this bit field. + */ +#define DEV_NOTE_MASK (0xffff) +#define ENABLE_DEV_NOTE(x) (1 << x) +/* Most of the device notification types should only be used for debug. + * SW does need to pay attention to function wake notifications. + */ +#define DEV_NOTE_FWAKE ENABLE_DEV_NOTE(1) + +/* CRCR - Command Ring Control Register - cmd_ring bitmasks */ +/* bit 0 is the command ring cycle state */ +/* stop ring operation after completion of the currently executing command */ +#define CMD_RING_PAUSE (1 << 1) +/* stop ring immediately - abort the currently executing command */ +#define CMD_RING_ABORT (1 << 2) +/* true: command ring is running */ +#define CMD_RING_RUNNING (1 << 3) +/* bits 4:5 reserved and should be preserved */ +/* Command Ring pointer - bit mask for the lower 32 bits. */ +#define CMD_RING_ADDR_MASK (0xffffffc0) + +/* CONFIG - Configure Register - config_reg bitmasks */ +/* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */ +#define MAX_DEVS(p) ((p) & 0xff) +/* bits 8:31 - reserved and should be preserved */ + +/* PORTSC - Port Status and Control Register - port_status_base bitmasks */ +/* true: device connected */ +#define PORT_CONNECT (1 << 0) +/* true: port enabled */ +#define PORT_PE (1 << 1) +/* bit 2 reserved and zeroed */ +/* true: port has an over-current condition */ +#define PORT_OC (1 << 3) +/* true: port reset signaling asserted */ +#define PORT_RESET (1 << 4) +/* Port Link State - bits 5:8 + * A read gives the current link PM state of the port, + * a write with Link State Write Strobe set sets the link state. + */ +/* true: port has power (see HCC_PPC) */ +#define PORT_POWER (1 << 9) +/* bits 10:13 indicate device speed: + * 0 - undefined speed - port hasn't be initialized by a reset yet + * 1 - full speed + * 2 - low speed + * 3 - high speed + * 4 - super speed + * 5-15 reserved + */ +#define DEV_SPEED_MASK (0xf << 10) +#define XDEV_FS (0x1 << 10) +#define XDEV_LS (0x2 << 10) +#define XDEV_HS (0x3 << 10) +#define XDEV_SS (0x4 << 10) +#define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0<<10)) +#define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS) +#define DEV_LOWSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_LS) +#define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS) +#define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS) +/* Bits 20:23 in the Slot Context are the speed for the device */ +#define SLOT_SPEED_FS (XDEV_FS << 10) +#define SLOT_SPEED_LS (XDEV_LS << 10) +#define SLOT_SPEED_HS (XDEV_HS << 10) +#define SLOT_SPEED_SS (XDEV_SS << 10) +/* Port Indicator Control */ +#define PORT_LED_OFF (0 << 14) +#define PORT_LED_AMBER (1 << 14) +#define PORT_LED_GREEN (2 << 14) +#define PORT_LED_MASK (3 << 14) +/* Port Link State Write Strobe - set this when changing link state */ +#define PORT_LINK_STROBE (1 << 16) +/* true: connect status change */ +#define PORT_CSC (1 << 17) +/* true: port enable change */ +#define PORT_PEC (1 << 18) +/* true: warm reset for a USB 3.0 device is done. A "hot" reset puts the port + * into an enabled state, and the device into the default state. A "warm" reset + * also resets the link, forcing the device through the link training sequence. + * SW can also look at the Port Reset register to see when warm reset is done. + */ +#define PORT_WRC (1 << 19) +/* true: over-current change */ +#define PORT_OCC (1 << 20) +/* true: reset change - 1 to 0 transition of PORT_RESET */ +#define PORT_RC (1 << 21) +/* port link status change - set on some port link state transitions: + * Transition Reason + * ------------------------------------------------------------------------------ + * - U3 to Resume Wakeup signaling from a device + * - Resume to Recovery to U0 USB 3.0 device resume + * - Resume to U0 USB 2.0 device resume + * - U3 to Recovery to U0 Software resume of USB 3.0 device complete + * - U3 to U0 Software resume of USB 2.0 device complete + * - U2 to U0 L1 resume of USB 2.1 device complete + * - U0 to U0 (???) L1 entry rejection by USB 2.1 device + * - U0 to disabled L1 entry error with USB 2.1 device + * - Any state to inactive Error on USB 3.0 port + */ +#define PORT_PLC (1 << 22) +/* port configure error change - port failed to configure its link partner */ +#define PORT_CEC (1 << 23) +/* bit 24 reserved */ +/* wake on connect (enable) */ +#define PORT_WKCONN_E (1 << 25) +/* wake on disconnect (enable) */ +#define PORT_WKDISC_E (1 << 26) +/* wake on over-current (enable) */ +#define PORT_WKOC_E (1 << 27) +/* bits 28:29 reserved */ +/* true: device is removable - for USB 3.0 roothub emulation */ +#define PORT_DEV_REMOVE (1 << 30) +/* Initiate a warm port reset - complete when PORT_WRC is '1' */ +#define PORT_WR (1 << 31) + +/* Port Power Management Status and Control - port_power_base bitmasks */ +/* Inactivity timer value for transitions into U1, in microseconds. + * Timeout can be up to 127us. 0xFF means an infinite timeout. + */ +#define PORT_U1_TIMEOUT(p) ((p) & 0xff) +/* Inactivity timer value for transitions into U2 */ +#define PORT_U2_TIMEOUT(p) (((p) & 0xff) << 8) +/* Bits 24:31 for port testing */ + + +/** + * struct xhci_intr_reg - Interrupt Register Set + * @irq_pending: IMAN - Interrupt Management Register. Used to enable + * interrupts and check for pending interrupts. + * @irq_control: IMOD - Interrupt Moderation Register. + * Used to throttle interrupts. + * @erst_size: Number of segments in the Event Ring Segment Table (ERST). + * @erst_base: ERST base address. + * @erst_dequeue: Event ring dequeue pointer. + * + * Each interrupter (defined by a MSI-X vector) has an event ring and an Event + * Ring Segment Table (ERST) associated with it. The event ring is comprised of + * multiple segments of the same size. The HC places events on the ring and + * "updates the Cycle bit in the TRBs to indicate to software the current + * position of the Enqueue Pointer." The HCD (Linux) processes those events and + * updates the dequeue pointer. + */ +struct xhci_intr_reg { + u32 irq_pending; + u32 irq_control; + u32 erst_size; + u32 rsvd; + u32 erst_base[2]; + u32 erst_dequeue[2]; +}; + +/* irq_pending bitmasks */ +#define ER_IRQ_PENDING(p) ((p) & 0x1) +/* bits 2:31 need to be preserved */ +/* THIS IS BUGGY - FIXME - IP IS WRITE 1 TO CLEAR */ +#define ER_IRQ_CLEAR(p) ((p) & 0xfffffffe) +#define ER_IRQ_ENABLE(p) ((ER_IRQ_CLEAR(p)) | 0x2) +#define ER_IRQ_DISABLE(p) ((ER_IRQ_CLEAR(p)) & ~(0x2)) + +/* irq_control bitmasks */ +/* Minimum interval between interrupts (in 250ns intervals). The interval + * between interrupts will be longer if there are no events on the event ring. + * Default is 4000 (1 ms). + */ +#define ER_IRQ_INTERVAL_MASK (0xffff) +/* Counter used to count down the time to the next interrupt - HW use only */ +#define ER_IRQ_COUNTER_MASK (0xffff << 16) + +/* erst_size bitmasks */ +/* Preserve bits 16:31 of erst_size */ +#define ERST_SIZE_MASK (0xffff << 16) + +/* erst_dequeue bitmasks */ +/* Dequeue ERST Segment Index (DESI) - Segment number (or alias) + * where the current dequeue pointer lies. This is an optional HW hint. + */ +#define ERST_DESI_MASK (0x7) +/* Event Handler Busy (EHB) - is the event ring scheduled to be serviced by + * a work queue (or delayed service routine)? + */ +#define ERST_EHB (1 << 3) +#define ERST_PTR_MASK (0xf) + +/** + * struct xhci_run_regs + * @microframe_index: + * MFINDEX - current microframe number + * + * Section 5.5 Host Controller Runtime Registers: + * "Software should read and write these registers using only Dword (32 bit) + * or larger accesses" + */ +struct xhci_run_regs { + u32 microframe_index; + u32 rsvd[7]; + struct xhci_intr_reg ir_set[128]; +}; + +/** + * struct doorbell_array + * + * Section 5.6 + */ +struct xhci_doorbell_array { + u32 doorbell[256]; +}; + +#define DB_TARGET_MASK 0xFFFFFF00 +#define DB_STREAM_ID_MASK 0x0000FFFF +#define DB_TARGET_HOST 0x0 +#define DB_STREAM_ID_HOST 0x0 +#define DB_MASK (0xff << 8) + +/* Endpoint Target - bits 0:7 */ +#define EPI_TO_DB(p) (((p) + 1) & 0xff) + + +/** + * struct xhci_slot_ctx + * @dev_info: Route string, device speed, hub info, and last valid endpoint + * @dev_info2: Max exit latency for device number, root hub port number + * @tt_info: tt_info is used to construct split transaction tokens + * @dev_state: slot state and device address + * + * Slot Context - section 6.2.1.1. This assumes the HC uses 32-byte context + * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes + * reserved at the end of the slot context for HC internal use. + */ +struct xhci_slot_ctx { + u32 dev_info; + u32 dev_info2; + u32 tt_info; + u32 dev_state; + /* offset 0x10 to 0x1f reserved for HC internal use */ + u32 reserved[4]; +}; + +/* dev_info bitmasks */ +/* Route String - 0:19 */ +#define ROUTE_STRING_MASK (0xfffff) +/* Device speed - values defined by PORTSC Device Speed field - 20:23 */ +#define DEV_SPEED (0xf << 20) +/* bit 24 reserved */ +/* Is this LS/FS device connected through a HS hub? - bit 25 */ +#define DEV_MTT (0x1 << 25) +/* Set if the device is a hub - bit 26 */ +#define DEV_HUB (0x1 << 26) +/* Index of the last valid endpoint context in this device context - 27:31 */ +#define LAST_CTX_MASK (0x1f << 27) +#define LAST_CTX(p) ((p) << 27) +#define LAST_CTX_TO_EP_NUM(p) (((p) >> 27) - 1) +#define SLOT_FLAG (1 << 0) +#define EP0_FLAG (1 << 1) + +/* dev_info2 bitmasks */ +/* Max Exit Latency (ms) - worst case time to wake up all links in dev path */ +#define MAX_EXIT (0xffff) +/* Root hub port number that is needed to access the USB device */ +#define ROOT_HUB_PORT(p) (((p) & 0xff) << 16) + +/* tt_info bitmasks */ +/* + * TT Hub Slot ID - for low or full speed devices attached to a high-speed hub + * The Slot ID of the hub that isolates the high speed signaling from + * this low or full-speed device. '0' if attached to root hub port. + */ +#define TT_SLOT (0xff) +/* + * The number of the downstream facing port of the high-speed hub + * '0' if the device is not low or full speed. + */ +#define TT_PORT (0xff << 8) + +/* dev_state bitmasks */ +/* USB device address - assigned by the HC */ +#define DEV_ADDR_MASK (0xff) +/* bits 8:26 reserved */ +/* Slot state */ +#define SLOT_STATE (0x1f << 27) +#define GET_SLOT_STATE(p) (((p) & (0x1f << 27)) >> 27) + + +/** + * struct xhci_ep_ctx + * @ep_info: endpoint state, streams, mult, and interval information. + * @ep_info2: information on endpoint type, max packet size, max burst size, + * error count, and whether the HC will force an event for all + * transactions. + * @deq: 64-bit ring dequeue pointer address. If the endpoint only + * defines one stream, this points to the endpoint transfer ring. + * Otherwise, it points to a stream context array, which has a + * ring pointer for each flow. + * @tx_info: + * Average TRB lengths for the endpoint ring and + * max payload within an Endpoint Service Interval Time (ESIT). + * + * Endpoint Context - section 6.2.1.2. This assumes the HC uses 32-byte context + * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes + * reserved at the end of the endpoint context for HC internal use. + */ +struct xhci_ep_ctx { + u32 ep_info; + u32 ep_info2; + u32 deq[2]; + u32 tx_info; + /* offset 0x14 - 0x1f reserved for HC internal use */ + u32 reserved[3]; +}; + +/* ep_info bitmasks */ +/* + * Endpoint State - bits 0:2 + * 0 - disabled + * 1 - running + * 2 - halted due to halt condition - ok to manipulate endpoint ring + * 3 - stopped + * 4 - TRB error + * 5-7 - reserved + */ +#define EP_STATE_MASK (0xf) +#define EP_STATE_DISABLED 0 +#define EP_STATE_RUNNING 1 +#define EP_STATE_HALTED 2 +#define EP_STATE_STOPPED 3 +#define EP_STATE_ERROR 4 +/* Mult - Max number of burtst within an interval, in EP companion desc. */ +#define EP_MULT(p) ((p & 0x3) << 8) +/* bits 10:14 are Max Primary Streams */ +/* bit 15 is Linear Stream Array */ +/* Interval - period between requests to an endpoint - 125u increments. */ +#define EP_INTERVAL(p) ((p & 0xff) << 16) + +/* ep_info2 bitmasks */ +/* + * Force Event - generate transfer events for all TRBs for this endpoint + * This will tell the HC to ignore the IOC and ISP flags (for debugging only). + */ +#define FORCE_EVENT (0x1) +#define ERROR_COUNT(p) (((p) & 0x3) << 1) +#define EP_TYPE(p) ((p) << 3) +#define ISOC_OUT_EP 1 +#define BULK_OUT_EP 2 +#define INT_OUT_EP 3 +#define CTRL_EP 4 +#define ISOC_IN_EP 5 +#define BULK_IN_EP 6 +#define INT_IN_EP 7 +/* bit 6 reserved */ +/* bit 7 is Host Initiate Disable - for disabling stream selection */ +#define MAX_BURST(p) (((p)&0xff) << 8) +#define MAX_PACKET(p) (((p)&0xffff) << 16) + + +/** + * struct xhci_device_control + * Input/Output context; see section 6.2.5. + * + * @drop_context: set the bit of the endpoint context you want to disable + * @add_context: set the bit of the endpoint context you want to enable + */ +struct xhci_device_control { + u32 drop_flags; + u32 add_flags; + u32 rsvd[6]; + struct xhci_slot_ctx slot; + struct xhci_ep_ctx ep[31]; +}; + +/* drop context bitmasks */ +#define DROP_EP(x) (0x1 << x) +/* add context bitmasks */ +#define ADD_EP(x) (0x1 << x) + + +struct xhci_virt_device { + /* + * Commands to the hardware are passed an "input context" that + * tells the hardware what to change in its data structures. + * The hardware will return changes in an "output context" that + * software must allocate for the hardware. We need to keep + * track of input and output contexts separately because + * these commands might fail and we don't trust the hardware. + */ + struct xhci_device_control *out_ctx; + dma_addr_t out_ctx_dma; + /* Used for addressing devices and configuration changes */ + struct xhci_device_control *in_ctx; + dma_addr_t in_ctx_dma; + /* FIXME when stream support is added */ + struct xhci_ring *ep_rings[31]; + /* Temporary storage in case the configure endpoint command fails and we + * have to restore the device state to the previous state + */ + struct xhci_ring *new_ep_rings[31]; + struct completion cmd_completion; + /* Status of the last command issued for this device */ + u32 cmd_status; +}; + + +/** + * struct xhci_device_context_array + * @dev_context_ptr array of 64-bit DMA addresses for device contexts + */ +struct xhci_device_context_array { + /* 64-bit device addresses; we only write 32-bit addresses */ + u32 dev_context_ptrs[2*MAX_HC_SLOTS]; + /* private xHCD pointers */ + dma_addr_t dma; +}; +/* TODO: write function to set the 64-bit device DMA address */ +/* + * TODO: change this to be dynamically sized at HC mem init time since the HC + * might not be able to handle the maximum number of devices possible. + */ + + +struct xhci_stream_ctx { + /* 64-bit stream ring address, cycle state, and stream type */ + u32 stream_ring[2]; + /* offset 0x14 - 0x1f reserved for HC internal use */ + u32 reserved[2]; +}; + + +struct xhci_transfer_event { + /* 64-bit buffer address, or immediate data */ + u32 buffer[2]; + u32 transfer_len; + /* This field is interpreted differently based on the type of TRB */ + u32 flags; +}; + +/** Transfer Event bit fields **/ +#define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f) + +/* Completion Code - only applicable for some types of TRBs */ +#define COMP_CODE_MASK (0xff << 24) +#define GET_COMP_CODE(p) (((p) & COMP_CODE_MASK) >> 24) +#define COMP_SUCCESS 1 +/* Data Buffer Error */ +#define COMP_DB_ERR 2 +/* Babble Detected Error */ +#define COMP_BABBLE 3 +/* USB Transaction Error */ +#define COMP_TX_ERR 4 +/* TRB Error - some TRB field is invalid */ +#define COMP_TRB_ERR 5 +/* Stall Error - USB device is stalled */ +#define COMP_STALL 6 +/* Resource Error - HC doesn't have memory for that device configuration */ +#define COMP_ENOMEM 7 +/* Bandwidth Error - not enough room in schedule for this dev config */ +#define COMP_BW_ERR 8 +/* No Slots Available Error - HC ran out of device slots */ +#define COMP_ENOSLOTS 9 +/* Invalid Stream Type Error */ +#define COMP_STREAM_ERR 10 +/* Slot Not Enabled Error - doorbell rung for disabled device slot */ +#define COMP_EBADSLT 11 +/* Endpoint Not Enabled Error */ +#define COMP_EBADEP 12 +/* Short Packet */ +#define COMP_SHORT_TX 13 +/* Ring Underrun - doorbell rung for an empty isoc OUT ep ring */ +#define COMP_UNDERRUN 14 +/* Ring Overrun - isoc IN ep ring is empty when ep is scheduled to RX */ +#define COMP_OVERRUN 15 +/* Virtual Function Event Ring Full Error */ +#define COMP_VF_FULL 16 +/* Parameter Error - Context parameter is invalid */ +#define COMP_EINVAL 17 +/* Bandwidth Overrun Error - isoc ep exceeded its allocated bandwidth */ +#define COMP_BW_OVER 18 +/* Context State Error - illegal context state transition requested */ +#define COMP_CTX_STATE 19 +/* No Ping Response Error - HC didn't get PING_RESPONSE in time to TX */ +#define COMP_PING_ERR 20 +/* Event Ring is full */ +#define COMP_ER_FULL 21 +/* Missed Service Error - HC couldn't service an isoc ep within interval */ +#define COMP_MISSED_INT 23 +/* Successfully stopped command ring */ +#define COMP_CMD_STOP 24 +/* Successfully aborted current command and stopped command ring */ +#define COMP_CMD_ABORT 25 +/* Stopped - transfer was terminated by a stop endpoint command */ +#define COMP_STOP 26 +/* Same as COMP_EP_STOPPED, but the transfered length in the event is invalid */ +#define COMP_STOP_INVAL 27 +/* Control Abort Error - Debug Capability - control pipe aborted */ +#define COMP_DBG_ABORT 28 +/* TRB type 29 and 30 reserved */ +/* Isoc Buffer Overrun - an isoc IN ep sent more data than could fit in TD */ +#define COMP_BUFF_OVER 31 +/* Event Lost Error - xHC has an "internal event overrun condition" */ +#define COMP_ISSUES 32 +/* Undefined Error - reported when other error codes don't apply */ +#define COMP_UNKNOWN 33 +/* Invalid Stream ID Error */ +#define COMP_STRID_ERR 34 +/* Secondary Bandwidth Error - may be returned by a Configure Endpoint cmd */ +/* FIXME - check for this */ +#define COMP_2ND_BW_ERR 35 +/* Split Transaction Error */ +#define COMP_SPLIT_ERR 36 + +struct xhci_link_trb { + /* 64-bit segment pointer*/ + u32 segment_ptr[2]; + u32 intr_target; + u32 control; +}; + +/* control bitfields */ +#define LINK_TOGGLE (0x1<<1) + +/* Command completion event TRB */ +struct xhci_event_cmd { + /* Pointer to command TRB, or the value passed by the event data trb */ + u32 cmd_trb[2]; + u32 status; + u32 flags; +}; + +/* flags bitmasks */ +/* bits 16:23 are the virtual function ID */ +/* bits 24:31 are the slot ID */ +#define TRB_TO_SLOT_ID(p) (((p) & (0xff<<24)) >> 24) +#define SLOT_ID_FOR_TRB(p) (((p) & 0xff) << 24) + +/* Stop Endpoint TRB - ep_index to endpoint ID for this TRB */ +#define TRB_TO_EP_INDEX(p) ((((p) & (0x1f << 16)) >> 16) - 1) +#define EP_ID_FOR_TRB(p) ((((p) + 1) & 0x1f) << 16) + + +/* Port Status Change Event TRB fields */ +/* Port ID - bits 31:24 */ +#define GET_PORT_ID(p) (((p) & (0xff << 24)) >> 24) + +/* Normal TRB fields */ +/* transfer_len bitmasks - bits 0:16 */ +#define TRB_LEN(p) ((p) & 0x1ffff) +/* TD size - number of bytes remaining in the TD (including this TRB): + * bits 17 - 21. Shift the number of bytes by 10. */ +#define TD_REMAINDER(p) ((((p) >> 10) & 0x1f) << 17) +/* Interrupter Target - which MSI-X vector to target the completion event at */ +#define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22) +#define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff) + +/* Cycle bit - indicates TRB ownership by HC or HCD */ +#define TRB_CYCLE (1<<0) +/* + * Force next event data TRB to be evaluated before task switch. + * Used to pass OS data back after a TD completes. + */ +#define TRB_ENT (1<<1) +/* Interrupt on short packet */ +#define TRB_ISP (1<<2) +/* Set PCIe no snoop attribute */ +#define TRB_NO_SNOOP (1<<3) +/* Chain multiple TRBs into a TD */ +#define TRB_CHAIN (1<<4) +/* Interrupt on completion */ +#define TRB_IOC (1<<5) +/* The buffer pointer contains immediate data */ +#define TRB_IDT (1<<6) + + +/* Control transfer TRB specific fields */ +#define TRB_DIR_IN (1<<16) + +struct xhci_generic_trb { + u32 field[4]; +}; + +union xhci_trb { + struct xhci_link_trb link; + struct xhci_transfer_event trans_event; + struct xhci_event_cmd event_cmd; + struct xhci_generic_trb generic; +}; + +/* TRB bit mask */ +#define TRB_TYPE_BITMASK (0xfc00) +#define TRB_TYPE(p) ((p) << 10) +/* TRB type IDs */ +/* bulk, interrupt, isoc scatter/gather, and control data stage */ +#define TRB_NORMAL 1 +/* setup stage for control transfers */ +#define TRB_SETUP 2 +/* data stage for control transfers */ +#define TRB_DATA 3 +/* status stage for control transfers */ +#define TRB_STATUS 4 +/* isoc transfers */ +#define TRB_ISOC 5 +/* TRB for linking ring segments */ +#define TRB_LINK 6 +#define TRB_EVENT_DATA 7 +/* Transfer Ring No-op (not for the command ring) */ +#define TRB_TR_NOOP 8 +/* Command TRBs */ +/* Enable Slot Command */ +#define TRB_ENABLE_SLOT 9 +/* Disable Slot Command */ +#define TRB_DISABLE_SLOT 10 +/* Address Device Command */ +#define TRB_ADDR_DEV 11 +/* Configure Endpoint Command */ +#define TRB_CONFIG_EP 12 +/* Evaluate Context Command */ +#define TRB_EVAL_CONTEXT 13 +/* Reset Transfer Ring Command */ +#define TRB_RESET_RING 14 +/* Stop Transfer Ring Command */ +#define TRB_STOP_RING 15 +/* Set Transfer Ring Dequeue Pointer Command */ +#define TRB_SET_DEQ 16 +/* Reset Device Command */ +#define TRB_RESET_DEV 17 +/* Force Event Command (opt) */ +#define TRB_FORCE_EVENT 18 +/* Negotiate Bandwidth Command (opt) */ +#define TRB_NEG_BANDWIDTH 19 +/* Set Latency Tolerance Value Command (opt) */ +#define TRB_SET_LT 20 +/* Get port bandwidth Command */ +#define TRB_GET_BW 21 +/* Force Header Command - generate a transaction or link management packet */ +#define TRB_FORCE_HEADER 22 +/* No-op Command - not for transfer rings */ +#define TRB_CMD_NOOP 23 +/* TRB IDs 24-31 reserved */ +/* Event TRBS */ +/* Transfer Event */ +#define TRB_TRANSFER 32 +/* Command Completion Event */ +#define TRB_COMPLETION 33 +/* Port Status Change Event */ +#define TRB_PORT_STATUS 34 +/* Bandwidth Request Event (opt) */ +#define TRB_BANDWIDTH_EVENT 35 +/* Doorbell Event (opt) */ +#define TRB_DOORBELL 36 +/* Host Controller Event */ +#define TRB_HC_EVENT 37 +/* Device Notification Event - device sent function wake notification */ +#define TRB_DEV_NOTE 38 +/* MFINDEX Wrap Event - microframe counter wrapped */ +#define TRB_MFINDEX_WRAP 39 +/* TRB IDs 40-47 reserved, 48-63 is vendor-defined */ + +/* + * TRBS_PER_SEGMENT must be a multiple of 4, + * since the command ring is 64-byte aligned. + * It must also be greater than 16. + */ +#define TRBS_PER_SEGMENT 64 +#define SEGMENT_SIZE (TRBS_PER_SEGMENT*16) +/* TRB buffer pointers can't cross 64KB boundaries */ +#define TRB_MAX_BUFF_SHIFT 16 +#define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT) + +struct xhci_segment { + union xhci_trb *trbs; + /* private to HCD */ + struct xhci_segment *next; + dma_addr_t dma; +}; + +struct xhci_td { + struct list_head td_list; + struct list_head cancelled_td_list; + struct urb *urb; + struct xhci_segment *start_seg; + union xhci_trb *first_trb; + union xhci_trb *last_trb; +}; + +struct xhci_ring { + struct xhci_segment *first_seg; + union xhci_trb *enqueue; + struct xhci_segment *enq_seg; + unsigned int enq_updates; + union xhci_trb *dequeue; + struct xhci_segment *deq_seg; + unsigned int deq_updates; + struct list_head td_list; + /* ---- Related to URB cancellation ---- */ + struct list_head cancelled_td_list; + unsigned int cancels_pending; + unsigned int state; +#define SET_DEQ_PENDING (1 << 0) + /* The TRB that was last reported in a stopped endpoint ring */ + union xhci_trb *stopped_trb; + struct xhci_td *stopped_td; + /* + * Write the cycle state into the TRB cycle field to give ownership of + * the TRB to the host controller (if we are the producer), or to check + * if we own the TRB (if we are the consumer). See section 4.9.1. + */ + u32 cycle_state; +}; + +struct xhci_erst_entry { + /* 64-bit event ring segment address */ + u32 seg_addr[2]; + u32 seg_size; + /* Set to zero */ + u32 rsvd; +}; + +struct xhci_erst { + struct xhci_erst_entry *entries; + unsigned int num_entries; + /* xhci->event_ring keeps track of segment dma addresses */ + dma_addr_t erst_dma_addr; + /* Num entries the ERST can contain */ + unsigned int erst_size; +}; + +/* + * Each segment table entry is 4*32bits long. 1K seems like an ok size: + * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table, + * meaning 64 ring segments. + * Initial allocated size of the ERST, in number of entries */ +#define ERST_NUM_SEGS 1 +/* Initial allocated size of the ERST, in number of entries */ +#define ERST_SIZE 64 +/* Initial number of event segment rings allocated */ +#define ERST_ENTRIES 1 +/* Poll every 60 seconds */ +#define POLL_TIMEOUT 60 +/* XXX: Make these module parameters */ + + +/* There is one ehci_hci structure per controller */ +struct xhci_hcd { + /* glue to PCI and HCD framework */ + struct xhci_cap_regs __iomem *cap_regs; + struct xhci_op_regs __iomem *op_regs; + struct xhci_run_regs __iomem *run_regs; + struct xhci_doorbell_array __iomem *dba; + /* Our HCD's current interrupter register set */ + struct xhci_intr_reg __iomem *ir_set; + + /* Cached register copies of read-only HC data */ + __u32 hcs_params1; + __u32 hcs_params2; + __u32 hcs_params3; + __u32 hcc_params; + + spinlock_t lock; + + /* packed release number */ + u8 sbrn; + u16 hci_version; + u8 max_slots; + u8 max_interrupters; + u8 max_ports; + u8 isoc_threshold; + int event_ring_max; + int addr_64; + /* 4KB min, 128MB max */ + int page_size; + /* Valid values are 12 to 20, inclusive */ + int page_shift; + /* only one MSI vector for now, but might need more later */ + int msix_count; + struct msix_entry *msix_entries; + /* data structures */ + struct xhci_device_context_array *dcbaa; + struct xhci_ring *cmd_ring; + struct xhci_ring *event_ring; + struct xhci_erst erst; + /* slot enabling and address device helpers */ + struct completion addr_dev; + int slot_id; + /* Internal mirror of the HW's dcbaa */ + struct xhci_virt_device *devs[MAX_HC_SLOTS]; + + /* DMA pools */ + struct dma_pool *device_pool; + struct dma_pool *segment_pool; + +#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING + /* Poll the rings - for debugging */ + struct timer_list event_ring_timer; + int zombie; +#endif + /* Statistics */ + int noops_submitted; + int noops_handled; + int error_bitmask; +}; + +/* For testing purposes */ +#define NUM_TEST_NOOPS 0 + +/* convert between an HCD pointer and the corresponding EHCI_HCD */ +static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd) +{ + return (struct xhci_hcd *) (hcd->hcd_priv); +} + +static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci) +{ + return container_of((void *) xhci, struct usb_hcd, hcd_priv); +} + +#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING +#define XHCI_DEBUG 1 +#else +#define XHCI_DEBUG 0 +#endif + +#define xhci_dbg(xhci, fmt, args...) \ + do { if (XHCI_DEBUG) dev_dbg(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) +#define xhci_info(xhci, fmt, args...) \ + do { if (XHCI_DEBUG) dev_info(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) +#define xhci_err(xhci, fmt, args...) \ + dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args) +#define xhci_warn(xhci, fmt, args...) \ + dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args) + +/* TODO: copied from ehci.h - can be refactored? */ +/* xHCI spec says all registers are little endian */ +static inline unsigned int xhci_readl(const struct xhci_hcd *xhci, + __u32 __iomem *regs) +{ + return readl(regs); +} +static inline void xhci_writel(struct xhci_hcd *xhci, + const unsigned int val, __u32 __iomem *regs) +{ + if (!in_interrupt()) + xhci_dbg(xhci, + "`MEM_WRITE_DWORD(3'b000, 32'h%p, 32'h%0x, 4'hf);\n", + regs, val); + writel(val, regs); +} + +/* xHCI debugging */ +void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num); +void xhci_print_registers(struct xhci_hcd *xhci); +void xhci_dbg_regs(struct xhci_hcd *xhci); +void xhci_print_run_regs(struct xhci_hcd *xhci); +void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb); +void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb); +void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg); +void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring); +void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst); +void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci); +void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring); +void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_device_control *ctx, dma_addr_t dma, unsigned int last_ep); + +/* xHCI memory managment */ +void xhci_mem_cleanup(struct xhci_hcd *xhci); +int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags); +void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id); +int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device *udev, gfp_t flags); +int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev); +unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc); +unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc); +void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep); +int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, + struct usb_device *udev, struct usb_host_endpoint *ep, + gfp_t mem_flags); +void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring); + +#ifdef CONFIG_PCI +/* xHCI PCI glue */ +int xhci_register_pci(void); +void xhci_unregister_pci(void); +#endif + +/* xHCI host controller glue */ +int xhci_halt(struct xhci_hcd *xhci); +int xhci_reset(struct xhci_hcd *xhci); +int xhci_init(struct usb_hcd *hcd); +int xhci_run(struct usb_hcd *hcd); +void xhci_stop(struct usb_hcd *hcd); +void xhci_shutdown(struct usb_hcd *hcd); +int xhci_get_frame(struct usb_hcd *hcd); +irqreturn_t xhci_irq(struct usb_hcd *hcd); +int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev); +void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev); +int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev); +int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags); +int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status); +int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); +int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); +int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); +void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); + +/* xHCI ring, segment, TRB, and TD functions */ +dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb); +void xhci_ring_cmd_db(struct xhci_hcd *xhci); +void *xhci_setup_one_noop(struct xhci_hcd *xhci); +void xhci_handle_event(struct xhci_hcd *xhci); +void xhci_set_hc_event_deq(struct xhci_hcd *xhci); +int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id); +int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, + u32 slot_id); +int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id, + unsigned int ep_index); +int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, + int slot_id, unsigned int ep_index); +int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, + int slot_id, unsigned int ep_index); +int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, + u32 slot_id); + +/* xHCI roothub code */ +int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, + char *buf, u16 wLength); +int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); + +#endif /* __LINUX_XHCI_HCD_H */ diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index a4ef77ef917d..90e1a8dedfa9 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -18,6 +18,7 @@ #include <linux/init.h> #include <linux/slab.h> #include <linux/sched.h> +#include <linux/smp_lock.h> #include <linux/poll.h> #include <linux/usb/iowarrior.h> @@ -726,12 +727,18 @@ static const struct file_operations iowarrior_fops = { .poll = iowarrior_poll, }; +static char *iowarrior_nodename(struct device *dev) +{ + return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev)); +} + /* * usb class driver info in order to get a minor number from the usb core, * and to have the device registered with devfs and the driver core */ static struct usb_class_driver iowarrior_class = { .name = "iowarrior%d", + .nodename = iowarrior_nodename, .fops = &iowarrior_fops, .minor_base = IOWARRIOR_MINOR_BASE, }; diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index ab0f3226158b..c1e2433f640d 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -266,12 +266,18 @@ static const struct file_operations tower_fops = { .llseek = tower_llseek, }; +static char *legousbtower_nodename(struct device *dev) +{ + return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev)); +} + /* * usb class driver info in order to get a minor number from the usb core, * and to have the device registered with the driver core */ static struct usb_class_driver tower_class = { .name = "legousbtower%d", + .nodename = legousbtower_nodename, .fops = &tower_fops, .minor_base = LEGO_USB_TOWER_MINOR_BASE, }; diff --git a/drivers/usb/misc/rio500.c b/drivers/usb/misc/rio500.c index deb95bb49fd1..d645f3899fe1 100644 --- a/drivers/usb/misc/rio500.c +++ b/drivers/usb/misc/rio500.c @@ -32,6 +32,7 @@ #include <linux/kernel.h> #include <linux/signal.h> #include <linux/sched.h> +#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/random.h> #include <linux/poll.h> diff --git a/drivers/usb/misc/sisusbvga/Kconfig b/drivers/usb/misc/sisusbvga/Kconfig index 7603cbe0865d..30ea7ca6846e 100644 --- a/drivers/usb/misc/sisusbvga/Kconfig +++ b/drivers/usb/misc/sisusbvga/Kconfig @@ -1,7 +1,7 @@ config USB_SISUSBVGA tristate "USB 2.0 SVGA dongle support (Net2280/SiS315)" - depends on USB && USB_EHCI_HCD + depends on USB && (USB_MUSB_HDRC || USB_EHCI_HCD) ---help--- Say Y here if you intend to attach a USB2VGA dongle based on a Net2280 and a SiS315 chip. diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c index e0ff9ccd866b..29092b8e59ce 100644 --- a/drivers/usb/misc/usblcd.c +++ b/drivers/usb/misc/usblcd.c @@ -16,6 +16,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/mutex.h> #include <asm/uaccess.h> diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 5f1a19d1497d..a9f06d76960f 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -1072,23 +1072,34 @@ static int unlink1 (struct usbtest_dev *dev, int pipe, int size, int async) */ msleep (jiffies % (2 * INTERRUPT_RATE)); if (async) { -retry: - retval = usb_unlink_urb (urb); - if (retval == -EBUSY || retval == -EIDRM) { - /* we can't unlink urbs while they're completing. - * or if they've completed, and we haven't resubmitted. - * "normal" drivers would prevent resubmission, but - * since we're testing unlink paths, we can't. - */ - ERROR(dev, "unlink retry\n"); - goto retry; + while (!completion_done(&completion)) { + retval = usb_unlink_urb(urb); + + switch (retval) { + case -EBUSY: + case -EIDRM: + /* we can't unlink urbs while they're completing + * or if they've completed, and we haven't + * resubmitted. "normal" drivers would prevent + * resubmission, but since we're testing unlink + * paths, we can't. + */ + ERROR(dev, "unlink retry\n"); + continue; + case 0: + case -EINPROGRESS: + break; + + default: + dev_err(&dev->intf->dev, + "unlink fail %d\n", retval); + return retval; + } + + break; } } else usb_kill_urb (urb); - if (!(retval == 0 || retval == -EINPROGRESS)) { - dev_err(&dev->intf->dev, "unlink fail %d\n", retval); - return retval; - } wait_for_completion (&completion); retval = urb->status; diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index f8d9045d668a..0f7a30b7d2d1 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -1261,7 +1261,7 @@ static int mon_alloc_buff(struct mon_pgmap *map, int npages) return -ENOMEM; } map[n].ptr = (unsigned char *) vaddr; - map[n].pg = virt_to_page(vaddr); + map[n].pg = virt_to_page((void *) vaddr); } return 0; } diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index 1f715436d6d3..a7eb4c99342c 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -733,7 +733,7 @@ int __init mon_text_init(void) { struct dentry *mondir; - mondir = debugfs_create_dir("usbmon", NULL); + mondir = debugfs_create_dir("usbmon", usb_debug_root); if (IS_ERR(mondir)) { printk(KERN_NOTICE TAG ": debugfs is not available\n"); return -ENODEV; diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index b66e8544d8b9..70073b157f0a 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -10,6 +10,7 @@ comment "Enable Host or Gadget support to see Inventra options" config USB_MUSB_HDRC depends on (USB || USB_GADGET) && HAVE_CLK depends on !SUPERH + select NOP_USB_XCEIV if ARCH_DAVINCI select TWL4030_USB if MACH_OMAP_3430SDP select USB_OTG_UTILS tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)' @@ -55,6 +56,7 @@ comment "Blackfin high speed USB Support" config USB_TUSB6010 boolean "TUSB 6010 support" depends on USB_MUSB_HDRC && !USB_MUSB_SOC + select NOP_USB_XCEIV default y help The TUSB 6010 chip, from Texas Instruments, connects a discrete diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 786134852092..f2f66ebc7362 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -143,7 +143,7 @@ static void musb_conn_timer_handler(unsigned long _musb) u16 val; spin_lock_irqsave(&musb->lock, flags); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_IDLE: case OTG_STATE_A_WAIT_BCON: /* Start a new session */ @@ -154,7 +154,7 @@ static void musb_conn_timer_handler(unsigned long _musb) val = musb_readw(musb->mregs, MUSB_DEVCTL); if (!(val & MUSB_DEVCTL_BDEVICE)) { gpio_set_value(musb->config->gpio_vrsel, 1); - musb->xceiv.state = OTG_STATE_A_WAIT_BCON; + musb->xceiv->state = OTG_STATE_A_WAIT_BCON; } else { gpio_set_value(musb->config->gpio_vrsel, 0); @@ -247,6 +247,11 @@ int __init musb_platform_init(struct musb *musb) } gpio_direction_output(musb->config->gpio_vrsel, 0); + usb_nop_xceiv_register(); + musb->xceiv = otg_get_transceiver(); + if (!musb->xceiv) + return -ENODEV; + if (ANOMALY_05000346) { bfin_write_USB_APHY_CALIB(ANOMALY_05000346_value); SSYNC(); @@ -291,7 +296,7 @@ int __init musb_platform_init(struct musb *musb) musb_conn_timer_handler, (unsigned long) musb); } if (is_peripheral_enabled(musb)) - musb->xceiv.set_power = bfin_set_power; + musb->xceiv->set_power = bfin_set_power; musb->isr = blackfin_interrupt; diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c index 1976e9b41800..c3577bbbae6c 100644 --- a/drivers/usb/musb/cppi_dma.c +++ b/drivers/usb/musb/cppi_dma.c @@ -6,6 +6,7 @@ * The TUSB6020, using VLYNQ, has CPPI that looks much like DaVinci. */ +#include <linux/platform_device.h> #include <linux/usb.h> #include "musb_core.h" @@ -1145,17 +1146,27 @@ static bool cppi_rx_scan(struct cppi *cppi, unsigned ch) return completed; } -void cppi_completion(struct musb *musb, u32 rx, u32 tx) +irqreturn_t cppi_interrupt(int irq, void *dev_id) { - void __iomem *tibase; - int i, index; + struct musb *musb = dev_id; struct cppi *cppi; + void __iomem *tibase; struct musb_hw_ep *hw_ep = NULL; + u32 rx, tx; + int i, index; cppi = container_of(musb->dma_controller, struct cppi, controller); tibase = musb->ctrl_base; + tx = musb_readl(tibase, DAVINCI_TXCPPI_MASKED_REG); + rx = musb_readl(tibase, DAVINCI_RXCPPI_MASKED_REG); + + if (!tx && !rx) + return IRQ_NONE; + + DBG(4, "CPPI IRQ Tx%x Rx%x\n", tx, rx); + /* process TX channels */ for (index = 0; tx; tx = tx >> 1, index++) { struct cppi_channel *tx_ch; @@ -1273,6 +1284,8 @@ void cppi_completion(struct musb *musb, u32 rx, u32 tx) /* write to CPPI EOI register to re-enable interrupts */ musb_writel(tibase, DAVINCI_CPPI_EOI_REG, 0); + + return IRQ_HANDLED; } /* Instantiate a software object representing a DMA controller. */ @@ -1280,6 +1293,9 @@ struct dma_controller *__init dma_controller_create(struct musb *musb, void __iomem *mregs) { struct cppi *controller; + struct device *dev = musb->controller; + struct platform_device *pdev = to_platform_device(dev); + int irq = platform_get_irq(pdev, 1); controller = kzalloc(sizeof *controller, GFP_KERNEL); if (!controller) @@ -1310,6 +1326,15 @@ dma_controller_create(struct musb *musb, void __iomem *mregs) return NULL; } + if (irq > 0) { + if (request_irq(irq, cppi_interrupt, 0, "cppi-dma", musb)) { + dev_err(dev, "request_irq %d failed!\n", irq); + dma_controller_destroy(&controller->controller); + return NULL; + } + controller->irq = irq; + } + return &controller->controller; } @@ -1322,6 +1347,9 @@ void dma_controller_destroy(struct dma_controller *c) cppi = container_of(c, struct cppi, controller); + if (cppi->irq) + free_irq(cppi->irq, cppi->musb); + /* assert: caller stopped the controller first */ dma_pool_destroy(cppi->pool); diff --git a/drivers/usb/musb/cppi_dma.h b/drivers/usb/musb/cppi_dma.h index 729b4071787b..59bf949e589b 100644 --- a/drivers/usb/musb/cppi_dma.h +++ b/drivers/usb/musb/cppi_dma.h @@ -5,7 +5,6 @@ #include <linux/slab.h> #include <linux/list.h> -#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/dmapool.h> @@ -119,6 +118,8 @@ struct cppi { void __iomem *mregs; /* Mentor regs */ void __iomem *tibase; /* TI/CPPI regs */ + int irq; + struct cppi_channel tx[4]; struct cppi_channel rx[4]; @@ -127,7 +128,7 @@ struct cppi { struct list_head tx_complete; }; -/* irq handling hook */ -extern void cppi_completion(struct musb *, u32 rx, u32 tx); +/* CPPI IRQ handler */ +extern irqreturn_t cppi_interrupt(int, void *); #endif /* end of ifndef _CPPI_DMA_H_ */ diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index 10d11ab113ab..e16ff605c458 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -35,13 +35,14 @@ #include <mach/hardware.h> #include <mach/memory.h> #include <mach/gpio.h> +#include <mach/cputype.h> #include <asm/mach-types.h> #include "musb_core.h" #ifdef CONFIG_MACH_DAVINCI_EVM -#define GPIO_nVBUS_DRV 87 +#define GPIO_nVBUS_DRV 144 #endif #include "davinci.h" @@ -215,7 +216,7 @@ static void otg_timer(unsigned long _musb) DBG(7, "poll devctl %02x (%s)\n", devctl, otg_state_string(musb)); spin_lock_irqsave(&musb->lock, flags); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_WAIT_VFALL: /* Wait till VBUS falls below SessionEnd (~0.2V); the 1.3 RTL * seems to mis-handle session "start" otherwise (or in our @@ -226,7 +227,7 @@ static void otg_timer(unsigned long _musb) mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); break; } - musb->xceiv.state = OTG_STATE_A_WAIT_VRISE; + musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; musb_writel(musb->ctrl_base, DAVINCI_USB_INT_SET_REG, MUSB_INTR_VBUSERROR << DAVINCI_USB_USBINT_SHIFT); break; @@ -251,7 +252,7 @@ static void otg_timer(unsigned long _musb) if (devctl & MUSB_DEVCTL_BDEVICE) mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); else - musb->xceiv.state = OTG_STATE_A_IDLE; + musb->xceiv->state = OTG_STATE_A_IDLE; break; default: break; @@ -265,6 +266,7 @@ static irqreturn_t davinci_interrupt(int irq, void *__hci) irqreturn_t retval = IRQ_NONE; struct musb *musb = __hci; void __iomem *tibase = musb->ctrl_base; + struct cppi *cppi; u32 tmp; spin_lock_irqsave(&musb->lock, flags); @@ -281,16 +283,9 @@ static irqreturn_t davinci_interrupt(int irq, void *__hci) /* CPPI interrupts share the same IRQ line, but have their own * mask, state, "vector", and EOI registers. */ - if (is_cppi_enabled()) { - u32 cppi_tx = musb_readl(tibase, DAVINCI_TXCPPI_MASKED_REG); - u32 cppi_rx = musb_readl(tibase, DAVINCI_RXCPPI_MASKED_REG); - - if (cppi_tx || cppi_rx) { - DBG(4, "CPPI IRQ t%x r%x\n", cppi_tx, cppi_rx); - cppi_completion(musb, cppi_rx, cppi_tx); - retval = IRQ_HANDLED; - } - } + cppi = container_of(musb->dma_controller, struct cppi, controller); + if (is_cppi_enabled() && musb->dma_controller && !cppi->irq) + retval = cppi_interrupt(irq, __hci); /* ack and handle non-CPPI interrupts */ tmp = musb_readl(tibase, DAVINCI_USB_INT_SRC_MASKED_REG); @@ -331,25 +326,26 @@ static irqreturn_t davinci_interrupt(int irq, void *__hci) * to stop registering in devctl. */ musb->int_usb &= ~MUSB_INTR_VBUSERROR; - musb->xceiv.state = OTG_STATE_A_WAIT_VFALL; + musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); WARNING("VBUS error workaround (delay coming)\n"); } else if (is_host_enabled(musb) && drvvbus) { - musb->is_active = 1; MUSB_HST_MODE(musb); - musb->xceiv.default_a = 1; - musb->xceiv.state = OTG_STATE_A_WAIT_VRISE; + musb->xceiv->default_a = 1; + musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; portstate(musb->port1_status |= USB_PORT_STAT_POWER); del_timer(&otg_workaround); } else { musb->is_active = 0; MUSB_DEV_MODE(musb); - musb->xceiv.default_a = 0; - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->default_a = 0; + musb->xceiv->state = OTG_STATE_B_IDLE; portstate(musb->port1_status &= ~USB_PORT_STAT_POWER); } - /* NOTE: this must complete poweron within 100 msec */ + /* NOTE: this must complete poweron within 100 msec + * (OTG_TIME_A_WAIT_VRISE) but we don't check for that. + */ davinci_source_power(musb, drvvbus, 0); DBG(2, "VBUS %s (%s)%s, devctl %02x\n", drvvbus ? "on" : "off", @@ -367,17 +363,12 @@ static irqreturn_t davinci_interrupt(int irq, void *__hci) /* poll for ID change */ if (is_otg_enabled(musb) - && musb->xceiv.state == OTG_STATE_B_IDLE) + && musb->xceiv->state == OTG_STATE_B_IDLE) mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); spin_unlock_irqrestore(&musb->lock, flags); - /* REVISIT we sometimes get unhandled IRQs - * (e.g. ep0). not clear why... - */ - if (retval != IRQ_HANDLED) - DBG(5, "unhandled? %08x\n", tmp); - return IRQ_HANDLED; + return retval; } int musb_platform_set_mode(struct musb *musb, u8 mode) @@ -391,6 +382,11 @@ int __init musb_platform_init(struct musb *musb) void __iomem *tibase = musb->ctrl_base; u32 revision; + usb_nop_xceiv_register(); + musb->xceiv = otg_get_transceiver(); + if (!musb->xceiv) + return -ENODEV; + musb->mregs += DAVINCI_BASE_OFFSET; clk_enable(musb->clock); @@ -398,7 +394,7 @@ int __init musb_platform_init(struct musb *musb) /* returns zero if e.g. not clocked */ revision = musb_readl(tibase, DAVINCI_USB_VERSION_REG); if (revision == 0) - return -ENODEV; + goto fail; if (is_host_enabled(musb)) setup_timer(&otg_workaround, otg_timer, (unsigned long) musb); @@ -417,6 +413,21 @@ int __init musb_platform_init(struct musb *musb) __raw_writel(phy_ctrl, USB_PHY_CTRL); } + /* On dm355, the default-A state machine needs DRVVBUS control. + * If we won't be a host, there's no need to turn it on. + */ + if (cpu_is_davinci_dm355()) { + u32 deepsleep = __raw_readl(DM355_DEEPSLEEP); + + if (is_host_enabled(musb)) { + deepsleep &= ~DRVVBUS_OVERRIDE; + } else { + deepsleep &= ~DRVVBUS_FORCE; + deepsleep |= DRVVBUS_OVERRIDE; + } + __raw_writel(deepsleep, DM355_DEEPSLEEP); + } + /* reset the controller */ musb_writel(tibase, DAVINCI_USB_CTRL_REG, 0x1); @@ -432,6 +443,10 @@ int __init musb_platform_init(struct musb *musb) musb->isr = davinci_interrupt; return 0; + +fail: + usb_nop_xceiv_unregister(); + return -ENODEV; } int musb_platform_exit(struct musb *musb) @@ -439,10 +454,19 @@ int musb_platform_exit(struct musb *musb) if (is_host_enabled(musb)) del_timer_sync(&otg_workaround); + /* force VBUS off */ + if (cpu_is_davinci_dm355()) { + u32 deepsleep = __raw_readl(DM355_DEEPSLEEP); + + deepsleep &= ~DRVVBUS_FORCE; + deepsleep |= DRVVBUS_OVERRIDE; + __raw_writel(deepsleep, DM355_DEEPSLEEP); + } + davinci_source_power(musb, 0 /*off*/, 1); /* delay, to avoid problems with module reload */ - if (is_host_enabled(musb) && musb->xceiv.default_a) { + if (is_host_enabled(musb) && musb->xceiv->default_a) { int maxdelay = 30; u8 devctl, warn = 0; @@ -471,5 +495,7 @@ int musb_platform_exit(struct musb *musb) clk_disable(musb->clock); + usb_nop_xceiv_unregister(); + return 0; } diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 4000cf6d1e81..554a414f65d1 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -112,6 +112,7 @@ #include "davinci.h" #endif +#define TA_WAIT_BCON(m) max_t(int, (m)->a_wait_bcon, OTG_TIME_A_WAIT_BCON) unsigned musb_debug; @@ -267,7 +268,7 @@ void musb_load_testpacket(struct musb *musb) const char *otg_state_string(struct musb *musb) { - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_IDLE: return "a_idle"; case OTG_STATE_A_WAIT_VRISE: return "a_wait_vrise"; case OTG_STATE_A_WAIT_BCON: return "a_wait_bcon"; @@ -288,12 +289,6 @@ const char *otg_state_string(struct musb *musb) #ifdef CONFIG_USB_MUSB_OTG /* - * See also USB_OTG_1-3.pdf 6.6.5 Timers - * REVISIT: Are the other timers done in the hardware? - */ -#define TB_ASE0_BRST 100 /* Min 3.125 ms */ - -/* * Handles OTG hnp timeouts, such as b_ase0_brst */ void musb_otg_timer_func(unsigned long data) @@ -302,16 +297,18 @@ void musb_otg_timer_func(unsigned long data) unsigned long flags; spin_lock_irqsave(&musb->lock, flags); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_B_WAIT_ACON: DBG(1, "HNP: b_wait_acon timeout; back to b_peripheral\n"); musb_g_disconnect(musb); - musb->xceiv.state = OTG_STATE_B_PERIPHERAL; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb->is_active = 0; break; + case OTG_STATE_A_SUSPEND: case OTG_STATE_A_WAIT_BCON: - DBG(1, "HNP: a_wait_bcon timeout; back to a_host\n"); - musb_hnp_stop(musb); + DBG(1, "HNP: %s timeout\n", otg_state_string(musb)); + musb_set_vbus(musb, 0); + musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; break; default: DBG(1, "HNP: Unhandled mode %s\n", otg_state_string(musb)); @@ -320,10 +317,8 @@ void musb_otg_timer_func(unsigned long data) spin_unlock_irqrestore(&musb->lock, flags); } -static DEFINE_TIMER(musb_otg_timer, musb_otg_timer_func, 0, 0); - /* - * Stops the B-device HNP state. Caller must take care of locking. + * Stops the HNP transition. Caller must take care of locking. */ void musb_hnp_stop(struct musb *musb) { @@ -331,20 +326,17 @@ void musb_hnp_stop(struct musb *musb) void __iomem *mbase = musb->mregs; u8 reg; - switch (musb->xceiv.state) { + DBG(1, "HNP: stop from %s\n", otg_state_string(musb)); + + switch (musb->xceiv->state) { case OTG_STATE_A_PERIPHERAL: - case OTG_STATE_A_WAIT_VFALL: - case OTG_STATE_A_WAIT_BCON: - DBG(1, "HNP: Switching back to A-host\n"); musb_g_disconnect(musb); - musb->xceiv.state = OTG_STATE_A_IDLE; - MUSB_HST_MODE(musb); - musb->is_active = 0; + DBG(1, "HNP: back to %s\n", otg_state_string(musb)); break; case OTG_STATE_B_HOST: DBG(1, "HNP: Disabling HR\n"); hcd->self.is_b_host = 0; - musb->xceiv.state = OTG_STATE_B_PERIPHERAL; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; MUSB_DEV_MODE(musb); reg = musb_readb(mbase, MUSB_POWER); reg |= MUSB_POWER_SUSPENDM; @@ -402,7 +394,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, if (devctl & MUSB_DEVCTL_HM) { #ifdef CONFIG_USB_MUSB_HDRC_HCD - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_SUSPEND: /* remote wakeup? later, GetPortStatus * will stop RESUME signaling @@ -425,12 +417,12 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, musb->rh_timer = jiffies + msecs_to_jiffies(20); - musb->xceiv.state = OTG_STATE_A_HOST; + musb->xceiv->state = OTG_STATE_A_HOST; musb->is_active = 1; usb_hcd_resume_root_hub(musb_to_hcd(musb)); break; case OTG_STATE_B_WAIT_ACON: - musb->xceiv.state = OTG_STATE_B_PERIPHERAL; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb->is_active = 1; MUSB_DEV_MODE(musb); break; @@ -441,11 +433,11 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, } #endif } else { - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { #ifdef CONFIG_USB_MUSB_HDRC_HCD case OTG_STATE_A_SUSPEND: /* possibly DISCONNECT is upcoming */ - musb->xceiv.state = OTG_STATE_A_HOST; + musb->xceiv->state = OTG_STATE_A_HOST; usb_hcd_resume_root_hub(musb_to_hcd(musb)); break; #endif @@ -490,7 +482,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, */ musb_writeb(mbase, MUSB_DEVCTL, MUSB_DEVCTL_SESSION); musb->ep0_stage = MUSB_EP0_START; - musb->xceiv.state = OTG_STATE_A_IDLE; + musb->xceiv->state = OTG_STATE_A_IDLE; MUSB_HST_MODE(musb); musb_set_vbus(musb, 1); @@ -516,7 +508,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, * REVISIT: do delays from lots of DEBUG_KERNEL checks * make trouble here, keeping VBUS < 4.4V ? */ - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_HOST: /* recovery is dicey once we've gotten past the * initial stages of enumeration, but if VBUS @@ -594,37 +586,40 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, if (devctl & MUSB_DEVCTL_LSDEV) musb->port1_status |= USB_PORT_STAT_LOW_SPEED; - if (hcd->status_urb) - usb_hcd_poll_rh_status(hcd); - else - usb_hcd_resume_root_hub(hcd); - - MUSB_HST_MODE(musb); - /* indicate new connection to OTG machine */ - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_B_PERIPHERAL: if (int_usb & MUSB_INTR_SUSPEND) { DBG(1, "HNP: SUSPEND+CONNECT, now b_host\n"); - musb->xceiv.state = OTG_STATE_B_HOST; - hcd->self.is_b_host = 1; int_usb &= ~MUSB_INTR_SUSPEND; + goto b_host; } else DBG(1, "CONNECT as b_peripheral???\n"); break; case OTG_STATE_B_WAIT_ACON: - DBG(1, "HNP: Waiting to switch to b_host state\n"); - musb->xceiv.state = OTG_STATE_B_HOST; + DBG(1, "HNP: CONNECT, now b_host\n"); +b_host: + musb->xceiv->state = OTG_STATE_B_HOST; hcd->self.is_b_host = 1; + musb->ignore_disconnect = 0; + del_timer(&musb->otg_timer); break; default: if ((devctl & MUSB_DEVCTL_VBUS) == (3 << MUSB_DEVCTL_VBUS_SHIFT)) { - musb->xceiv.state = OTG_STATE_A_HOST; + musb->xceiv->state = OTG_STATE_A_HOST; hcd->self.is_b_host = 0; } break; } + + /* poke the root hub */ + MUSB_HST_MODE(musb); + if (hcd->status_urb) + usb_hcd_poll_rh_status(hcd); + else + usb_hcd_resume_root_hub(hcd); + DBG(1, "CONNECT (%s) devctl %02x\n", otg_state_string(musb), devctl); } @@ -650,7 +645,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, } } else if (is_peripheral_capable()) { DBG(1, "BUS RESET as %s\n", otg_state_string(musb)); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { #ifdef CONFIG_USB_OTG case OTG_STATE_A_SUSPEND: /* We need to ignore disconnect on suspend @@ -661,24 +656,27 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, musb_g_reset(musb); /* FALLTHROUGH */ case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */ - DBG(1, "HNP: Setting timer as %s\n", - otg_state_string(musb)); - musb_otg_timer.data = (unsigned long)musb; - mod_timer(&musb_otg_timer, jiffies - + msecs_to_jiffies(100)); + /* never use invalid T(a_wait_bcon) */ + DBG(1, "HNP: in %s, %d msec timeout\n", + otg_state_string(musb), + TA_WAIT_BCON(musb)); + mod_timer(&musb->otg_timer, jiffies + + msecs_to_jiffies(TA_WAIT_BCON(musb))); break; case OTG_STATE_A_PERIPHERAL: - musb_hnp_stop(musb); + musb->ignore_disconnect = 0; + del_timer(&musb->otg_timer); + musb_g_reset(musb); break; case OTG_STATE_B_WAIT_ACON: DBG(1, "HNP: RESET (%s), to b_peripheral\n", otg_state_string(musb)); - musb->xceiv.state = OTG_STATE_B_PERIPHERAL; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb_g_reset(musb); break; #endif case OTG_STATE_B_IDLE: - musb->xceiv.state = OTG_STATE_B_PERIPHERAL; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; /* FALLTHROUGH */ case OTG_STATE_B_PERIPHERAL: musb_g_reset(musb); @@ -763,7 +761,7 @@ static irqreturn_t musb_stage2_irq(struct musb *musb, u8 int_usb, MUSB_MODE(musb), devctl); handled = IRQ_HANDLED; - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { #ifdef CONFIG_USB_MUSB_HDRC_HCD case OTG_STATE_A_HOST: case OTG_STATE_A_SUSPEND: @@ -776,7 +774,16 @@ static irqreturn_t musb_stage2_irq(struct musb *musb, u8 int_usb, #endif /* HOST */ #ifdef CONFIG_USB_MUSB_OTG case OTG_STATE_B_HOST: - musb_hnp_stop(musb); + /* REVISIT this behaves for "real disconnect" + * cases; make sure the other transitions from + * from B_HOST act right too. The B_HOST code + * in hnp_stop() is currently not used... + */ + musb_root_disconnect(musb); + musb_to_hcd(musb)->self.is_b_host = 0; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; + MUSB_DEV_MODE(musb); + musb_g_disconnect(musb); break; case OTG_STATE_A_PERIPHERAL: musb_hnp_stop(musb); @@ -805,26 +812,35 @@ static irqreturn_t musb_stage2_irq(struct musb *musb, u8 int_usb, otg_state_string(musb), devctl, power); handled = IRQ_HANDLED; - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { #ifdef CONFIG_USB_MUSB_OTG case OTG_STATE_A_PERIPHERAL: - /* - * We cannot stop HNP here, devctl BDEVICE might be - * still set. + /* We also come here if the cable is removed, since + * this silicon doesn't report ID-no-longer-grounded. + * + * We depend on T(a_wait_bcon) to shut us down, and + * hope users don't do anything dicey during this + * undesired detour through A_WAIT_BCON. */ + musb_hnp_stop(musb); + usb_hcd_resume_root_hub(musb_to_hcd(musb)); + musb_root_disconnect(musb); + musb_platform_try_idle(musb, jiffies + + msecs_to_jiffies(musb->a_wait_bcon + ? : OTG_TIME_A_WAIT_BCON)); break; #endif case OTG_STATE_B_PERIPHERAL: musb_g_suspend(musb); musb->is_active = is_otg_enabled(musb) - && musb->xceiv.gadget->b_hnp_enable; + && musb->xceiv->gadget->b_hnp_enable; if (musb->is_active) { #ifdef CONFIG_USB_MUSB_OTG - musb->xceiv.state = OTG_STATE_B_WAIT_ACON; + musb->xceiv->state = OTG_STATE_B_WAIT_ACON; DBG(1, "HNP: Setting timer for b_ase0_brst\n"); - musb_otg_timer.data = (unsigned long)musb; - mod_timer(&musb_otg_timer, jiffies - + msecs_to_jiffies(TB_ASE0_BRST)); + mod_timer(&musb->otg_timer, jiffies + + msecs_to_jiffies( + OTG_TIME_B_ASE0_BRST)); #endif } break; @@ -834,9 +850,9 @@ static irqreturn_t musb_stage2_irq(struct musb *musb, u8 int_usb, + msecs_to_jiffies(musb->a_wait_bcon)); break; case OTG_STATE_A_HOST: - musb->xceiv.state = OTG_STATE_A_SUSPEND; + musb->xceiv->state = OTG_STATE_A_SUSPEND; musb->is_active = is_otg_enabled(musb) - && musb->xceiv.host->b_hnp_enable; + && musb->xceiv->host->b_hnp_enable; break; case OTG_STATE_B_HOST: /* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */ @@ -1068,14 +1084,13 @@ static struct fifo_cfg __initdata mode_4_cfg[] = { { .hw_ep_num = 8, .style = FIFO_RX, .maxpacket = 512, }, { .hw_ep_num = 9, .style = FIFO_TX, .maxpacket = 512, }, { .hw_ep_num = 9, .style = FIFO_RX, .maxpacket = 512, }, -{ .hw_ep_num = 10, .style = FIFO_TX, .maxpacket = 512, }, -{ .hw_ep_num = 10, .style = FIFO_RX, .maxpacket = 512, }, -{ .hw_ep_num = 11, .style = FIFO_TX, .maxpacket = 512, }, -{ .hw_ep_num = 11, .style = FIFO_RX, .maxpacket = 512, }, -{ .hw_ep_num = 12, .style = FIFO_TX, .maxpacket = 512, }, -{ .hw_ep_num = 12, .style = FIFO_RX, .maxpacket = 512, }, -{ .hw_ep_num = 13, .style = FIFO_TX, .maxpacket = 512, }, -{ .hw_ep_num = 13, .style = FIFO_RX, .maxpacket = 512, }, +{ .hw_ep_num = 10, .style = FIFO_TX, .maxpacket = 256, }, +{ .hw_ep_num = 10, .style = FIFO_RX, .maxpacket = 64, }, +{ .hw_ep_num = 11, .style = FIFO_TX, .maxpacket = 256, }, +{ .hw_ep_num = 11, .style = FIFO_RX, .maxpacket = 64, }, +{ .hw_ep_num = 12, .style = FIFO_TX, .maxpacket = 256, }, +{ .hw_ep_num = 12, .style = FIFO_RX, .maxpacket = 64, }, +{ .hw_ep_num = 13, .style = FIFO_RXTX, .maxpacket = 4096, }, { .hw_ep_num = 14, .style = FIFO_RXTX, .maxpacket = 1024, }, { .hw_ep_num = 15, .style = FIFO_RXTX, .maxpacket = 1024, }, }; @@ -1335,11 +1350,11 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb) } if (reg & MUSB_CONFIGDATA_HBRXE) { strcat(aInfo, ", HB-ISO Rx"); - strcat(aInfo, " (X)"); /* no driver support */ + musb->hb_iso_rx = true; } if (reg & MUSB_CONFIGDATA_HBTXE) { strcat(aInfo, ", HB-ISO Tx"); - strcat(aInfo, " (X)"); /* no driver support */ + musb->hb_iso_tx = true; } if (reg & MUSB_CONFIGDATA_SOFTCONE) strcat(aInfo, ", SoftConn"); @@ -1481,13 +1496,7 @@ static irqreturn_t generic_interrupt(int irq, void *__hci) spin_unlock_irqrestore(&musb->lock, flags); - /* REVISIT we sometimes get spurious IRQs on g_ep0 - * not clear why... - */ - if (retval != IRQ_HANDLED) - DBG(5, "spurious?\n"); - - return IRQ_HANDLED; + return retval; } #else @@ -1687,8 +1696,9 @@ musb_vbus_store(struct device *dev, struct device_attribute *attr, } spin_lock_irqsave(&musb->lock, flags); - musb->a_wait_bcon = val; - if (musb->xceiv.state == OTG_STATE_A_WAIT_BCON) + /* force T(a_wait_bcon) to be zero/unlimited *OR* valid */ + musb->a_wait_bcon = val ? max_t(int, val, OTG_TIME_A_WAIT_BCON) : 0 ; + if (musb->xceiv->state == OTG_STATE_A_WAIT_BCON) musb->is_active = 0; musb_platform_try_idle(musb, jiffies + msecs_to_jiffies(val)); spin_unlock_irqrestore(&musb->lock, flags); @@ -1706,10 +1716,13 @@ musb_vbus_show(struct device *dev, struct device_attribute *attr, char *buf) spin_lock_irqsave(&musb->lock, flags); val = musb->a_wait_bcon; + /* FIXME get_vbus_status() is normally #defined as false... + * and is effectively TUSB-specific. + */ vbus = musb_platform_get_vbus_status(musb); spin_unlock_irqrestore(&musb->lock, flags); - return sprintf(buf, "Vbus %s, timeout %lu\n", + return sprintf(buf, "Vbus %s, timeout %lu msec\n", vbus ? "on" : "off", val); } static DEVICE_ATTR(vbus, 0644, musb_vbus_show, musb_vbus_store); @@ -1749,8 +1762,8 @@ static void musb_irq_work(struct work_struct *data) struct musb *musb = container_of(data, struct musb, irq_work); static int old_state; - if (musb->xceiv.state != old_state) { - old_state = musb->xceiv.state; + if (musb->xceiv->state != old_state) { + old_state = musb->xceiv->state; sysfs_notify(&musb->controller->kobj, NULL, "mode"); } } @@ -1782,6 +1795,7 @@ allocate_instance(struct device *dev, hcd->uses_new_polling = 1; musb->vbuserr_retry = VBUSERR_RETRY_COUNT; + musb->a_wait_bcon = OTG_TIME_A_WAIT_BCON; #else musb = kzalloc(sizeof *musb, GFP_KERNEL); if (!musb) @@ -1847,7 +1861,7 @@ static void musb_free(struct musb *musb) } #ifdef CONFIG_USB_MUSB_OTG - put_device(musb->xceiv.dev); + put_device(musb->xceiv->dev); #endif #ifdef CONFIG_USB_MUSB_HDRC_HCD @@ -1928,10 +1942,18 @@ bad_config: } } - /* assume vbus is off */ - - /* platform adjusts musb->mregs and musb->isr if needed, - * and activates clocks + /* The musb_platform_init() call: + * - adjusts musb->mregs and musb->isr if needed, + * - may initialize an integrated tranceiver + * - initializes musb->xceiv, usually by otg_get_transceiver() + * - activates clocks. + * - stops powering VBUS + * - assigns musb->board_set_vbus if host mode is enabled + * + * There are various transciever configurations. Blackfin, + * DaVinci, TUSB60x0, and others integrate them. OMAP3 uses + * external/discrete ones in various flavors (twl4030 family, + * isp1504, non-OTG, etc) mostly hooking up through ULPI. */ musb->isr = generic_interrupt; status = musb_platform_init(musb); @@ -1968,6 +1990,10 @@ bad_config: if (status < 0) goto fail2; +#ifdef CONFIG_USB_OTG + setup_timer(&musb->otg_timer, musb_otg_timer_func, (unsigned long) musb); +#endif + /* Init IRQ workqueue before request_irq */ INIT_WORK(&musb->irq_work, musb_irq_work); @@ -1999,17 +2025,17 @@ bad_config: ? "DMA" : "PIO", musb->nIrq); -#ifdef CONFIG_USB_MUSB_HDRC_HCD - /* host side needs more setup, except for no-host modes */ - if (musb->board_mode != MUSB_PERIPHERAL) { + /* host side needs more setup */ + if (is_host_enabled(musb)) { struct usb_hcd *hcd = musb_to_hcd(musb); - if (musb->board_mode == MUSB_OTG) + otg_set_host(musb->xceiv, &hcd->self); + + if (is_otg_enabled(musb)) hcd->self.otg_port = 1; - musb->xceiv.host = &hcd->self; + musb->xceiv->host = &hcd->self; hcd->power_budget = 2 * (plat->power ? : 250); } -#endif /* CONFIG_USB_MUSB_HDRC_HCD */ /* For the host-only role, we can activate right away. * (We expect the ID pin to be forcibly grounded!!) @@ -2017,8 +2043,8 @@ bad_config: */ if (!is_otg_enabled(musb) && is_host_enabled(musb)) { MUSB_HST_MODE(musb); - musb->xceiv.default_a = 1; - musb->xceiv.state = OTG_STATE_A_IDLE; + musb->xceiv->default_a = 1; + musb->xceiv->state = OTG_STATE_A_IDLE; status = usb_add_hcd(musb_to_hcd(musb), -1, 0); if (status) @@ -2033,8 +2059,8 @@ bad_config: } else /* peripheral is enabled */ { MUSB_DEV_MODE(musb); - musb->xceiv.default_a = 0; - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->default_a = 0; + musb->xceiv->state = OTG_STATE_B_IDLE; status = musb_gadget_setup(musb); if (status) diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index efb39b5e55b5..381d648a36b8 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -38,8 +38,8 @@ #include <linux/slab.h> #include <linux/list.h> #include <linux/interrupt.h> -#include <linux/smp_lock.h> #include <linux/errno.h> +#include <linux/timer.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/usb/ch9.h> @@ -171,7 +171,8 @@ enum musb_h_ep0_state { /* peripheral side ep0 states */ enum musb_g_ep0_state { - MUSB_EP0_STAGE_SETUP, /* idle, waiting for setup */ + MUSB_EP0_STAGE_IDLE, /* idle, waiting for SETUP */ + MUSB_EP0_STAGE_SETUP, /* received SETUP */ MUSB_EP0_STAGE_TX, /* IN data */ MUSB_EP0_STAGE_RX, /* OUT data */ MUSB_EP0_STAGE_STATUSIN, /* (after OUT data) */ @@ -179,10 +180,15 @@ enum musb_g_ep0_state { MUSB_EP0_STAGE_ACKWAIT, /* after zlp, before statusin */ } __attribute__ ((packed)); -/* OTG protocol constants */ +/* + * OTG protocol constants. See USB OTG 1.3 spec, + * sections 5.5 "Device Timings" and 6.6.5 "Timers". + */ #define OTG_TIME_A_WAIT_VRISE 100 /* msec (max) */ -#define OTG_TIME_A_WAIT_BCON 0 /* 0=infinite; min 1000 msec */ -#define OTG_TIME_A_IDLE_BDIS 200 /* msec (min) */ +#define OTG_TIME_A_WAIT_BCON 1100 /* min 1 second */ +#define OTG_TIME_A_AIDL_BDIS 200 /* min 200 msec */ +#define OTG_TIME_B_ASE0_BRST 100 /* min 3.125 ms */ + /*************************** REGISTER ACCESS ********************************/ @@ -331,6 +337,8 @@ struct musb { struct list_head control; /* of musb_qh */ struct list_head in_bulk; /* of musb_qh */ struct list_head out_bulk; /* of musb_qh */ + + struct timer_list otg_timer; #endif /* called with IRQs blocked; ON/nonzero implies starting a session, @@ -355,7 +363,7 @@ struct musb { u16 int_rx; u16 int_tx; - struct otg_transceiver xceiv; + struct otg_transceiver *xceiv; int nIrq; unsigned irq_wake:1; @@ -386,6 +394,9 @@ struct musb { unsigned is_multipoint:1; unsigned ignore_disconnect:1; /* during bus resets */ + unsigned hb_iso_rx:1; /* high bandwidth iso rx? */ + unsigned hb_iso_tx:1; /* high bandwidth iso tx? */ + #ifdef C_MP_TX unsigned bulk_split:1; #define can_bulk_split(musb,type) \ diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index f79440cdfe7e..8b3c4e2ed7b8 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -310,7 +310,7 @@ static void txstate(struct musb *musb, struct musb_request *req) /* setup DMA, then program endpoint CSR */ request_size = min(request->length, musb_ep->dma->max_len); - if (request_size <= musb_ep->packet_sz) + if (request_size < musb_ep->packet_sz) musb_ep->dma->desired_mode = 0; else musb_ep->dma->desired_mode = 1; @@ -349,7 +349,8 @@ static void txstate(struct musb *musb, struct musb_request *req) #elif defined(CONFIG_USB_TI_CPPI_DMA) /* program endpoint CSR first, then setup DMA */ csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY); - csr |= MUSB_TXCSR_MODE | MUSB_TXCSR_DMAENAB; + csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | + MUSB_TXCSR_MODE; musb_writew(epio, MUSB_TXCSR, (MUSB_TXCSR_P_WZC_BITS & ~MUSB_TXCSR_P_UNDERRUN) | csr); @@ -1405,7 +1406,7 @@ static int musb_gadget_wakeup(struct usb_gadget *gadget) spin_lock_irqsave(&musb->lock, flags); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_B_PERIPHERAL: /* NOTE: OTG state machine doesn't include B_SUSPENDED; * that's part of the standard usb 1.1 state machine, and @@ -1507,9 +1508,9 @@ static int musb_gadget_vbus_draw(struct usb_gadget *gadget, unsigned mA) { struct musb *musb = gadget_to_musb(gadget); - if (!musb->xceiv.set_power) + if (!musb->xceiv->set_power) return -EOPNOTSUPP; - return otg_set_power(&musb->xceiv, mA); + return otg_set_power(musb->xceiv, mA); } static int musb_gadget_pullup(struct usb_gadget *gadget, int is_on) @@ -1732,11 +1733,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) spin_lock_irqsave(&musb->lock, flags); - /* REVISIT always use otg_set_peripheral(), handling - * issues including the root hub one below ... - */ - musb->xceiv.gadget = &musb->g; - musb->xceiv.state = OTG_STATE_B_IDLE; + otg_set_peripheral(musb->xceiv, &musb->g); musb->is_active = 1; /* FIXME this ignores the softconnect flag. Drivers are @@ -1748,6 +1745,8 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) if (!is_otg_enabled(musb)) musb_start(musb); + otg_set_peripheral(musb->xceiv, &musb->g); + spin_unlock_irqrestore(&musb->lock, flags); if (is_otg_enabled(musb)) { @@ -1761,8 +1760,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) if (retval < 0) { DBG(1, "add_hcd failed, %d\n", retval); spin_lock_irqsave(&musb->lock, flags); - musb->xceiv.gadget = NULL; - musb->xceiv.state = OTG_STATE_UNDEFINED; + otg_set_peripheral(musb->xceiv, NULL); musb->gadget_driver = NULL; musb->g.dev.driver = NULL; spin_unlock_irqrestore(&musb->lock, flags); @@ -1845,8 +1843,9 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) (void) musb_gadget_vbus_draw(&musb->g, 0); - musb->xceiv.state = OTG_STATE_UNDEFINED; + musb->xceiv->state = OTG_STATE_UNDEFINED; stop_activity(musb, driver); + otg_set_peripheral(musb->xceiv, NULL); DBG(3, "unregistering driver %s\n", driver->function); spin_unlock_irqrestore(&musb->lock, flags); @@ -1882,7 +1881,7 @@ EXPORT_SYMBOL(usb_gadget_unregister_driver); void musb_g_resume(struct musb *musb) { musb->is_suspended = 0; - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_B_IDLE: break; case OTG_STATE_B_WAIT_ACON: @@ -1908,10 +1907,10 @@ void musb_g_suspend(struct musb *musb) devctl = musb_readb(musb->mregs, MUSB_DEVCTL); DBG(3, "devctl %02x\n", devctl); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_B_IDLE: if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) - musb->xceiv.state = OTG_STATE_B_PERIPHERAL; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; break; case OTG_STATE_B_PERIPHERAL: musb->is_suspended = 1; @@ -1957,22 +1956,24 @@ void musb_g_disconnect(struct musb *musb) spin_lock(&musb->lock); } - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { default: #ifdef CONFIG_USB_MUSB_OTG DBG(2, "Unhandled disconnect %s, setting a_idle\n", otg_state_string(musb)); - musb->xceiv.state = OTG_STATE_A_IDLE; + musb->xceiv->state = OTG_STATE_A_IDLE; + MUSB_HST_MODE(musb); break; case OTG_STATE_A_PERIPHERAL: - musb->xceiv.state = OTG_STATE_A_WAIT_VFALL; + musb->xceiv->state = OTG_STATE_A_WAIT_BCON; + MUSB_HST_MODE(musb); break; case OTG_STATE_B_WAIT_ACON: case OTG_STATE_B_HOST: #endif case OTG_STATE_B_PERIPHERAL: case OTG_STATE_B_IDLE: - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->state = OTG_STATE_B_IDLE; break; case OTG_STATE_B_SRP_INIT: break; @@ -2028,10 +2029,10 @@ __acquires(musb->lock) * or else after HNP, as A-Device */ if (devctl & MUSB_DEVCTL_BDEVICE) { - musb->xceiv.state = OTG_STATE_B_PERIPHERAL; + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb->g.is_a_peripheral = 0; } else if (is_otg_enabled(musb)) { - musb->xceiv.state = OTG_STATE_A_PERIPHERAL; + musb->xceiv->state = OTG_STATE_A_PERIPHERAL; musb->g.is_a_peripheral = 1; } else WARN_ON(1); diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c index 3f5e30ddfa27..40ed50ecedff 100644 --- a/drivers/usb/musb/musb_gadget_ep0.c +++ b/drivers/usb/musb/musb_gadget_ep0.c @@ -4,6 +4,7 @@ * Copyright 2005 Mentor Graphics Corporation * Copyright (C) 2005-2006 by Texas Instruments * Copyright (C) 2006-2007 Nokia Corporation + * Copyright (C) 2008-2009 MontaVista Software, Inc. <source@mvista.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -58,7 +59,8 @@ static char *decode_ep0stage(u8 stage) { switch (stage) { - case MUSB_EP0_STAGE_SETUP: return "idle"; + case MUSB_EP0_STAGE_IDLE: return "idle"; + case MUSB_EP0_STAGE_SETUP: return "setup"; case MUSB_EP0_STAGE_TX: return "in"; case MUSB_EP0_STAGE_RX: return "out"; case MUSB_EP0_STAGE_ACKWAIT: return "wait"; @@ -628,7 +630,7 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb) musb_writew(regs, MUSB_CSR0, csr & ~MUSB_CSR0_P_SENTSTALL); retval = IRQ_HANDLED; - musb->ep0_state = MUSB_EP0_STAGE_SETUP; + musb->ep0_state = MUSB_EP0_STAGE_IDLE; csr = musb_readw(regs, MUSB_CSR0); } @@ -636,7 +638,18 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb) if (csr & MUSB_CSR0_P_SETUPEND) { musb_writew(regs, MUSB_CSR0, MUSB_CSR0_P_SVDSETUPEND); retval = IRQ_HANDLED; - musb->ep0_state = MUSB_EP0_STAGE_SETUP; + /* Transition into the early status phase */ + switch (musb->ep0_state) { + case MUSB_EP0_STAGE_TX: + musb->ep0_state = MUSB_EP0_STAGE_STATUSOUT; + break; + case MUSB_EP0_STAGE_RX: + musb->ep0_state = MUSB_EP0_STAGE_STATUSIN; + break; + default: + ERR("SetupEnd came in a wrong ep0stage %s", + decode_ep0stage(musb->ep0_state)); + } csr = musb_readw(regs, MUSB_CSR0); /* NOTE: request may need completion */ } @@ -697,11 +710,31 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb) if (req) musb_g_ep0_giveback(musb, req); } + + /* + * In case when several interrupts can get coalesced, + * check to see if we've already received a SETUP packet... + */ + if (csr & MUSB_CSR0_RXPKTRDY) + goto setup; + + retval = IRQ_HANDLED; + musb->ep0_state = MUSB_EP0_STAGE_IDLE; + break; + + case MUSB_EP0_STAGE_IDLE: + /* + * This state is typically (but not always) indiscernible + * from the status states since the corresponding interrupts + * tend to happen within too little period of time (with only + * a zero-length packet in between) and so get coalesced... + */ retval = IRQ_HANDLED; musb->ep0_state = MUSB_EP0_STAGE_SETUP; /* FALLTHROUGH */ case MUSB_EP0_STAGE_SETUP: +setup: if (csr & MUSB_CSR0_RXPKTRDY) { struct usb_ctrlrequest setup; int handled = 0; @@ -783,7 +816,7 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb) stall: DBG(3, "stall (%d)\n", handled); musb->ackpend |= MUSB_CSR0_P_SENDSTALL; - musb->ep0_state = MUSB_EP0_STAGE_SETUP; + musb->ep0_state = MUSB_EP0_STAGE_IDLE; finish: musb_writew(regs, MUSB_CSR0, musb->ackpend); @@ -803,7 +836,7 @@ finish: /* "can't happen" */ WARN_ON(1); musb_writew(regs, MUSB_CSR0, MUSB_CSR0_P_SENDSTALL); - musb->ep0_state = MUSB_EP0_STAGE_SETUP; + musb->ep0_state = MUSB_EP0_STAGE_IDLE; break; } @@ -959,7 +992,7 @@ static int musb_g_ep0_halt(struct usb_ep *e, int value) csr |= MUSB_CSR0_P_SENDSTALL; musb_writew(regs, MUSB_CSR0, csr); - musb->ep0_state = MUSB_EP0_STAGE_SETUP; + musb->ep0_state = MUSB_EP0_STAGE_IDLE; musb->ackpend = 0; break; default: diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index db1b57415ec7..cf94511485f2 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -181,6 +181,19 @@ static inline void musb_h_tx_dma_start(struct musb_hw_ep *ep) musb_writew(ep->regs, MUSB_TXCSR, txcsr); } +static void musb_ep_set_qh(struct musb_hw_ep *ep, int is_in, struct musb_qh *qh) +{ + if (is_in != 0 || ep->is_shared_fifo) + ep->in_qh = qh; + if (is_in == 0 || ep->is_shared_fifo) + ep->out_qh = qh; +} + +static struct musb_qh *musb_ep_get_qh(struct musb_hw_ep *ep, int is_in) +{ + return is_in ? ep->in_qh : ep->out_qh; +} + /* * Start the URB at the front of an endpoint's queue * end must be claimed from the caller. @@ -210,7 +223,6 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh) case USB_ENDPOINT_XFER_CONTROL: /* control transfers always start with SETUP */ is_in = 0; - hw_ep->out_qh = qh; musb->ep0_stage = MUSB_EP0_START; buf = urb->setup_packet; len = 8; @@ -239,10 +251,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh) epnum, buf + offset, len); /* Configure endpoint */ - if (is_in || hw_ep->is_shared_fifo) - hw_ep->in_qh = qh; - else - hw_ep->out_qh = qh; + musb_ep_set_qh(hw_ep, is_in, qh); musb_ep_program(musb, epnum, urb, !is_in, buf, offset, len); /* transmit may have more work: start it when it is time */ @@ -286,9 +295,8 @@ start: } } -/* caller owns controller lock, irqs are blocked */ -static void -__musb_giveback(struct musb *musb, struct urb *urb, int status) +/* Context: caller owns controller lock, IRQs are blocked */ +static void musb_giveback(struct musb *musb, struct urb *urb, int status) __releases(musb->lock) __acquires(musb->lock) { @@ -321,51 +329,48 @@ __acquires(musb->lock) spin_lock(&musb->lock); } -/* for bulk/interrupt endpoints only */ -static inline void -musb_save_toggle(struct musb_hw_ep *ep, int is_in, struct urb *urb) +/* For bulk/interrupt endpoints only */ +static inline void musb_save_toggle(struct musb_qh *qh, int is_in, + struct urb *urb) { - struct usb_device *udev = urb->dev; + void __iomem *epio = qh->hw_ep->regs; u16 csr; - void __iomem *epio = ep->regs; - struct musb_qh *qh; - /* FIXME: the current Mentor DMA code seems to have + /* + * FIXME: the current Mentor DMA code seems to have * problems getting toggle correct. */ - if (is_in || ep->is_shared_fifo) - qh = ep->in_qh; + if (is_in) + csr = musb_readw(epio, MUSB_RXCSR) & MUSB_RXCSR_H_DATATOGGLE; else - qh = ep->out_qh; + csr = musb_readw(epio, MUSB_TXCSR) & MUSB_TXCSR_H_DATATOGGLE; - if (!is_in) { - csr = musb_readw(epio, MUSB_TXCSR); - usb_settoggle(udev, qh->epnum, 1, - (csr & MUSB_TXCSR_H_DATATOGGLE) - ? 1 : 0); - } else { - csr = musb_readw(epio, MUSB_RXCSR); - usb_settoggle(udev, qh->epnum, 0, - (csr & MUSB_RXCSR_H_DATATOGGLE) - ? 1 : 0); - } + usb_settoggle(urb->dev, qh->epnum, !is_in, csr ? 1 : 0); } -/* caller owns controller lock, irqs are blocked */ -static struct musb_qh * -musb_giveback(struct musb_qh *qh, struct urb *urb, int status) +/* + * Advance this hardware endpoint's queue, completing the specified URB and + * advancing to either the next URB queued to that qh, or else invalidating + * that qh and advancing to the next qh scheduled after the current one. + * + * Context: caller owns controller lock, IRQs are blocked + */ +static void musb_advance_schedule(struct musb *musb, struct urb *urb, + struct musb_hw_ep *hw_ep, int is_in) { + struct musb_qh *qh = musb_ep_get_qh(hw_ep, is_in); struct musb_hw_ep *ep = qh->hw_ep; - struct musb *musb = ep->musb; - int is_in = usb_pipein(urb->pipe); int ready = qh->is_ready; + int status; + + status = (urb->status == -EINPROGRESS) ? 0 : urb->status; /* save toggle eagerly, for paranoia */ switch (qh->type) { case USB_ENDPOINT_XFER_BULK: case USB_ENDPOINT_XFER_INT: - musb_save_toggle(ep, is_in, urb); + musb_save_toggle(qh, is_in, urb); break; case USB_ENDPOINT_XFER_ISOC: if (status == 0 && urb->error_count) @@ -374,7 +379,7 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status) } qh->is_ready = 0; - __musb_giveback(musb, urb, status); + musb_giveback(musb, urb, status); qh->is_ready = ready; /* reclaim resources (and bandwidth) ASAP; deschedule it, and @@ -388,11 +393,8 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status) else ep->tx_reinit = 1; - /* clobber old pointers to this qh */ - if (is_in || ep->is_shared_fifo) - ep->in_qh = NULL; - else - ep->out_qh = NULL; + /* Clobber old pointers to this qh */ + musb_ep_set_qh(ep, is_in, NULL); qh->hep->hcpriv = NULL; switch (qh->type) { @@ -421,36 +423,10 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status) break; } } - return qh; -} - -/* - * Advance this hardware endpoint's queue, completing the specified urb and - * advancing to either the next urb queued to that qh, or else invalidating - * that qh and advancing to the next qh scheduled after the current one. - * - * Context: caller owns controller lock, irqs are blocked - */ -static void -musb_advance_schedule(struct musb *musb, struct urb *urb, - struct musb_hw_ep *hw_ep, int is_in) -{ - struct musb_qh *qh; - - if (is_in || hw_ep->is_shared_fifo) - qh = hw_ep->in_qh; - else - qh = hw_ep->out_qh; - - if (urb->status == -EINPROGRESS) - qh = musb_giveback(qh, urb, 0); - else - qh = musb_giveback(qh, urb, urb->status); if (qh != NULL && qh->is_ready) { DBG(4, "... next ep%d %cX urb %p\n", - hw_ep->epnum, is_in ? 'R' : 'T', - next_urb(qh)); + hw_ep->epnum, is_in ? 'R' : 'T', next_urb(qh)); musb_start_urb(musb, is_in, qh); } } @@ -629,7 +605,8 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, struct musb_hw_ep *ep) musb_writeb(ep->regs, MUSB_RXTYPE, qh->type_reg); musb_writeb(ep->regs, MUSB_RXINTERVAL, qh->intv_reg); /* NOTE: bulk combining rewrites high bits of maxpacket */ - musb_writew(ep->regs, MUSB_RXMAXP, qh->maxpacket); + musb_writew(ep->regs, MUSB_RXMAXP, + qh->maxpacket | ((qh->hb_mult - 1) << 11)); ep->rx_reinit = 0; } @@ -651,9 +628,10 @@ static bool musb_tx_dma_program(struct dma_controller *dma, csr = musb_readw(epio, MUSB_TXCSR); if (length > pkt_size) { mode = 1; - csr |= MUSB_TXCSR_AUTOSET - | MUSB_TXCSR_DMAMODE - | MUSB_TXCSR_DMAENAB; + csr |= MUSB_TXCSR_DMAMODE | MUSB_TXCSR_DMAENAB; + /* autoset shouldn't be set in high bandwidth */ + if (qh->hb_mult == 1) + csr |= MUSB_TXCSR_AUTOSET; } else { mode = 0; csr &= ~(MUSB_TXCSR_AUTOSET | MUSB_TXCSR_DMAMODE); @@ -703,15 +681,8 @@ static void musb_ep_program(struct musb *musb, u8 epnum, void __iomem *mbase = musb->mregs; struct musb_hw_ep *hw_ep = musb->endpoints + epnum; void __iomem *epio = hw_ep->regs; - struct musb_qh *qh; - u16 packet_sz; - - if (!is_out || hw_ep->is_shared_fifo) - qh = hw_ep->in_qh; - else - qh = hw_ep->out_qh; - - packet_sz = qh->maxpacket; + struct musb_qh *qh = musb_ep_get_qh(hw_ep, !is_out); + u16 packet_sz = qh->maxpacket; DBG(3, "%s hw%d urb %p spd%d dev%d ep%d%s " "h_addr%02x h_port%02x bytes %d\n", @@ -1129,17 +1100,14 @@ void musb_host_tx(struct musb *musb, u8 epnum) u16 tx_csr; size_t length = 0; size_t offset = 0; - struct urb *urb; struct musb_hw_ep *hw_ep = musb->endpoints + epnum; void __iomem *epio = hw_ep->regs; - struct musb_qh *qh = hw_ep->is_shared_fifo ? hw_ep->in_qh - : hw_ep->out_qh; + struct musb_qh *qh = hw_ep->out_qh; + struct urb *urb = next_urb(qh); u32 status = 0; void __iomem *mbase = musb->mregs; struct dma_channel *dma; - urb = next_urb(qh); - musb_ep_select(mbase, epnum); tx_csr = musb_readw(epio, MUSB_TXCSR); @@ -1427,7 +1395,7 @@ static void musb_bulk_rx_nak_timeout(struct musb *musb, struct musb_hw_ep *ep) urb->actual_length += dma->actual_len; dma->actual_len = 0L; } - musb_save_toggle(ep, 1, urb); + musb_save_toggle(cur_qh, 1, urb); /* move cur_qh to end of queue */ list_move_tail(&cur_qh->ring, &musb->in_bulk); @@ -1531,6 +1499,10 @@ void musb_host_rx(struct musb *musb, u8 epnum) /* packet error reported later */ iso_err = true; } + } else if (rx_csr & MUSB_RXCSR_INCOMPRX) { + DBG(3, "end %d high bandwidth incomplete ISO packet RX\n", + epnum); + status = -EPROTO; } /* faults abort the transfer */ @@ -1738,7 +1710,11 @@ void musb_host_rx(struct musb *musb, u8 epnum) val &= ~MUSB_RXCSR_H_AUTOREQ; else val |= MUSB_RXCSR_H_AUTOREQ; - val |= MUSB_RXCSR_AUTOCLEAR | MUSB_RXCSR_DMAENAB; + val |= MUSB_RXCSR_DMAENAB; + + /* autoclear shouldn't be set in high bandwidth */ + if (qh->hb_mult == 1) + val |= MUSB_RXCSR_AUTOCLEAR; musb_writew(epio, MUSB_RXCSR, MUSB_RXCSR_H_WZC_BITS | val); @@ -1817,19 +1793,17 @@ static int musb_schedule( epnum++, hw_ep++) { int diff; - if (is_in || hw_ep->is_shared_fifo) { - if (hw_ep->in_qh != NULL) - continue; - } else if (hw_ep->out_qh != NULL) + if (musb_ep_get_qh(hw_ep, is_in) != NULL) continue; if (hw_ep == musb->bulk_ep) continue; if (is_in) - diff = hw_ep->max_packet_sz_rx - qh->maxpacket; + diff = hw_ep->max_packet_sz_rx; else - diff = hw_ep->max_packet_sz_tx - qh->maxpacket; + diff = hw_ep->max_packet_sz_tx; + diff -= (qh->maxpacket * qh->hb_mult); if (diff >= 0 && best_diff > diff) { best_diff = diff; @@ -1932,15 +1906,27 @@ static int musb_urb_enqueue( qh->is_ready = 1; qh->maxpacket = le16_to_cpu(epd->wMaxPacketSize); + qh->type = usb_endpoint_type(epd); - /* no high bandwidth support yet */ - if (qh->maxpacket & ~0x7ff) { - ret = -EMSGSIZE; - goto done; + /* Bits 11 & 12 of wMaxPacketSize encode high bandwidth multiplier. + * Some musb cores don't support high bandwidth ISO transfers; and + * we don't (yet!) support high bandwidth interrupt transfers. + */ + qh->hb_mult = 1 + ((qh->maxpacket >> 11) & 0x03); + if (qh->hb_mult > 1) { + int ok = (qh->type == USB_ENDPOINT_XFER_ISOC); + + if (ok) + ok = (usb_pipein(urb->pipe) && musb->hb_iso_rx) + || (usb_pipeout(urb->pipe) && musb->hb_iso_tx); + if (!ok) { + ret = -EMSGSIZE; + goto done; + } + qh->maxpacket &= 0x7ff; } qh->epnum = usb_endpoint_num(epd); - qh->type = usb_endpoint_type(epd); /* NOTE: urb->dev->devnum is wrong during SET_ADDRESS */ qh->addr_reg = (u8) usb_pipedevice(urb->pipe); @@ -2052,14 +2038,15 @@ done: * called with controller locked, irqs blocked * that hardware queue advances to the next transfer, unless prevented */ -static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh, int is_in) +static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh) { struct musb_hw_ep *ep = qh->hw_ep; void __iomem *epio = ep->regs; unsigned hw_end = ep->epnum; void __iomem *regs = ep->musb->mregs; - u16 csr; + int is_in = usb_pipein(urb->pipe); int status = 0; + u16 csr; musb_ep_select(regs, hw_end); @@ -2112,14 +2099,14 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) { struct musb *musb = hcd_to_musb(hcd); struct musb_qh *qh; - struct list_head *sched; unsigned long flags; + int is_in = usb_pipein(urb->pipe); int ret; DBG(4, "urb=%p, dev%d ep%d%s\n", urb, usb_pipedevice(urb->pipe), usb_pipeendpoint(urb->pipe), - usb_pipein(urb->pipe) ? "in" : "out"); + is_in ? "in" : "out"); spin_lock_irqsave(&musb->lock, flags); ret = usb_hcd_check_unlink_urb(hcd, urb, status); @@ -2130,47 +2117,25 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) if (!qh) goto done; - /* Any URB not actively programmed into endpoint hardware can be + /* + * Any URB not actively programmed into endpoint hardware can be * immediately given back; that's any URB not at the head of an * endpoint queue, unless someday we get real DMA queues. And even * if it's at the head, it might not be known to the hardware... * - * Otherwise abort current transfer, pending dma, etc.; urb->status + * Otherwise abort current transfer, pending DMA, etc.; urb->status * has already been updated. This is a synchronous abort; it'd be * OK to hold off until after some IRQ, though. + * + * NOTE: qh is invalid unless !list_empty(&hep->urb_list) */ - if (!qh->is_ready || urb->urb_list.prev != &qh->hep->urb_list) - ret = -EINPROGRESS; - else { - switch (qh->type) { - case USB_ENDPOINT_XFER_CONTROL: - sched = &musb->control; - break; - case USB_ENDPOINT_XFER_BULK: - if (qh->mux == 1) { - if (usb_pipein(urb->pipe)) - sched = &musb->in_bulk; - else - sched = &musb->out_bulk; - break; - } - default: - /* REVISIT when we get a schedule tree, periodic - * transfers won't always be at the head of a - * singleton queue... - */ - sched = NULL; - break; - } - } - - /* NOTE: qh is invalid unless !list_empty(&hep->urb_list) */ - if (ret < 0 || (sched && qh != first_qh(sched))) { + if (!qh->is_ready + || urb->urb_list.prev != &qh->hep->urb_list + || musb_ep_get_qh(qh->hw_ep, is_in) != qh) { int ready = qh->is_ready; - ret = 0; qh->is_ready = 0; - __musb_giveback(musb, urb, 0); + musb_giveback(musb, urb, 0); qh->is_ready = ready; /* If nothing else (usually musb_giveback) is using it @@ -2182,7 +2147,7 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) kfree(qh); } } else - ret = musb_cleanup_urb(urb, qh, urb->pipe & USB_DIR_IN); + ret = musb_cleanup_urb(urb, qh); done: spin_unlock_irqrestore(&musb->lock, flags); return ret; @@ -2192,13 +2157,11 @@ done: static void musb_h_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) { - u8 epnum = hep->desc.bEndpointAddress; + u8 is_in = hep->desc.bEndpointAddress & USB_DIR_IN; unsigned long flags; struct musb *musb = hcd_to_musb(hcd); - u8 is_in = epnum & USB_DIR_IN; struct musb_qh *qh; struct urb *urb; - struct list_head *sched; spin_lock_irqsave(&musb->lock, flags); @@ -2206,31 +2169,11 @@ musb_h_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) if (qh == NULL) goto exit; - switch (qh->type) { - case USB_ENDPOINT_XFER_CONTROL: - sched = &musb->control; - break; - case USB_ENDPOINT_XFER_BULK: - if (qh->mux == 1) { - if (is_in) - sched = &musb->in_bulk; - else - sched = &musb->out_bulk; - break; - } - default: - /* REVISIT when we get a schedule tree, periodic transfers - * won't always be at the head of a singleton queue... - */ - sched = NULL; - break; - } - - /* NOTE: qh is invalid unless !list_empty(&hep->urb_list) */ + /* NOTE: qh is invalid unless !list_empty(&hep->urb_list) */ - /* kick first urb off the hardware, if needed */ + /* Kick the first URB off the hardware, if needed */ qh->is_ready = 0; - if (!sched || qh == first_qh(sched)) { + if (musb_ep_get_qh(qh->hw_ep, is_in) == qh) { urb = next_urb(qh); /* make software (then hardware) stop ASAP */ @@ -2238,7 +2181,7 @@ musb_h_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) urb->status = -ESHUTDOWN; /* cleanup */ - musb_cleanup_urb(urb, qh, urb->pipe & USB_DIR_IN); + musb_cleanup_urb(urb, qh); /* Then nuke all the others ... and advance the * queue on hw_ep (e.g. bulk ring) when we're done. @@ -2254,7 +2197,7 @@ musb_h_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) * will activate any of these as it advances. */ while (!list_empty(&hep->urb_list)) - __musb_giveback(musb, next_urb(qh), -ESHUTDOWN); + musb_giveback(musb, next_urb(qh), -ESHUTDOWN); hep->hcpriv = NULL; list_del(&qh->ring); @@ -2292,13 +2235,30 @@ static void musb_h_stop(struct usb_hcd *hcd) static int musb_bus_suspend(struct usb_hcd *hcd) { struct musb *musb = hcd_to_musb(hcd); + u8 devctl; + + if (!is_host_active(musb)) + return 0; - if (musb->xceiv.state == OTG_STATE_A_SUSPEND) + switch (musb->xceiv->state) { + case OTG_STATE_A_SUSPEND: return 0; + case OTG_STATE_A_WAIT_VRISE: + /* ID could be grounded even if there's no device + * on the other end of the cable. NOTE that the + * A_WAIT_VRISE timers are messy with MUSB... + */ + devctl = musb_readb(musb->mregs, MUSB_DEVCTL); + if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) + musb->xceiv->state = OTG_STATE_A_WAIT_BCON; + break; + default: + break; + } - if (is_host_active(musb) && musb->is_active) { - WARNING("trying to suspend as %s is_active=%i\n", - otg_state_string(musb), musb->is_active); + if (musb->is_active) { + WARNING("trying to suspend as %s while active\n", + otg_state_string(musb)); return -EBUSY; } else return 0; diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h index 0b7fbcd21963..14b00776638d 100644 --- a/drivers/usb/musb/musb_host.h +++ b/drivers/usb/musb/musb_host.h @@ -67,6 +67,7 @@ struct musb_qh { u8 is_ready; /* safe to modify hw_ep */ u8 type; /* XFERTYPE_* */ u8 epnum; + u8 hb_mult; /* high bandwidth pkts per uf */ u16 maxpacket; u16 frame; /* for periodic schedule */ unsigned iso_idx; /* in urb->iso_frame_desc[] */ diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index bf677acc83db..bfe5fe4ebfee 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -78,18 +78,22 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend) DBG(3, "Root port suspended, power %02x\n", power); musb->port1_status |= USB_PORT_STAT_SUSPEND; - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_HOST: - musb->xceiv.state = OTG_STATE_A_SUSPEND; + musb->xceiv->state = OTG_STATE_A_SUSPEND; musb->is_active = is_otg_enabled(musb) - && musb->xceiv.host->b_hnp_enable; + && musb->xceiv->host->b_hnp_enable; + if (musb->is_active) + mod_timer(&musb->otg_timer, jiffies + + msecs_to_jiffies( + OTG_TIME_A_AIDL_BDIS)); musb_platform_try_idle(musb, 0); break; #ifdef CONFIG_USB_MUSB_OTG case OTG_STATE_B_HOST: - musb->xceiv.state = OTG_STATE_B_WAIT_ACON; + musb->xceiv->state = OTG_STATE_B_WAIT_ACON; musb->is_active = is_otg_enabled(musb) - && musb->xceiv.host->b_hnp_enable; + && musb->xceiv->host->b_hnp_enable; musb_platform_try_idle(musb, 0); break; #endif @@ -116,7 +120,7 @@ static void musb_port_reset(struct musb *musb, bool do_reset) void __iomem *mbase = musb->mregs; #ifdef CONFIG_USB_MUSB_OTG - if (musb->xceiv.state == OTG_STATE_B_IDLE) { + if (musb->xceiv->state == OTG_STATE_B_IDLE) { DBG(2, "HNP: Returning from HNP; no hub reset from b_idle\n"); musb->port1_status &= ~USB_PORT_STAT_RESET; return; @@ -186,14 +190,23 @@ void musb_root_disconnect(struct musb *musb) usb_hcd_poll_rh_status(musb_to_hcd(musb)); musb->is_active = 0; - switch (musb->xceiv.state) { - case OTG_STATE_A_HOST: + switch (musb->xceiv->state) { case OTG_STATE_A_SUSPEND: - musb->xceiv.state = OTG_STATE_A_WAIT_BCON; +#ifdef CONFIG_USB_MUSB_OTG + if (is_otg_enabled(musb) + && musb->xceiv->host->b_hnp_enable) { + musb->xceiv->state = OTG_STATE_A_PERIPHERAL; + musb->g.is_a_peripheral = 1; + break; + } +#endif + /* FALLTHROUGH */ + case OTG_STATE_A_HOST: + musb->xceiv->state = OTG_STATE_A_WAIT_BCON; musb->is_active = 0; break; case OTG_STATE_A_WAIT_VFALL: - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->state = OTG_STATE_B_IDLE; break; default: DBG(1, "host disconnect (%s)\n", otg_state_string(musb)); @@ -332,7 +345,7 @@ int musb_hub_control( musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; usb_hcd_poll_rh_status(musb_to_hcd(musb)); /* NOTE: it might really be A_WAIT_BCON ... */ - musb->xceiv.state = OTG_STATE_A_HOST; + musb->xceiv->state = OTG_STATE_A_HOST; } put_unaligned(cpu_to_le32(musb->port1_status diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 60924ce08493..34875201ee04 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -44,7 +44,6 @@ #define get_cpu_rev() 2 #endif -#define MUSB_TIMEOUT_A_WAIT_BCON 1100 static struct timer_list musb_idle_timer; @@ -61,17 +60,17 @@ static void musb_do_idle(unsigned long _musb) devctl = musb_readb(musb->mregs, MUSB_DEVCTL); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_WAIT_BCON: devctl &= ~MUSB_DEVCTL_SESSION; musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); devctl = musb_readb(musb->mregs, MUSB_DEVCTL); if (devctl & MUSB_DEVCTL_BDEVICE) { - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->state = OTG_STATE_B_IDLE; MUSB_DEV_MODE(musb); } else { - musb->xceiv.state = OTG_STATE_A_IDLE; + musb->xceiv->state = OTG_STATE_A_IDLE; MUSB_HST_MODE(musb); } break; @@ -89,7 +88,7 @@ static void musb_do_idle(unsigned long _musb) musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; usb_hcd_poll_rh_status(musb_to_hcd(musb)); /* NOTE: it might really be A_WAIT_BCON ... */ - musb->xceiv.state = OTG_STATE_A_HOST; + musb->xceiv->state = OTG_STATE_A_HOST; } break; #endif @@ -97,9 +96,9 @@ static void musb_do_idle(unsigned long _musb) case OTG_STATE_A_HOST: devctl = musb_readb(musb->mregs, MUSB_DEVCTL); if (devctl & MUSB_DEVCTL_BDEVICE) - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->state = OTG_STATE_B_IDLE; else - musb->xceiv.state = OTG_STATE_A_WAIT_BCON; + musb->xceiv->state = OTG_STATE_A_WAIT_BCON; #endif default: break; @@ -118,7 +117,7 @@ void musb_platform_try_idle(struct musb *musb, unsigned long timeout) /* Never idle if active, or when VBUS timeout is not set as host */ if (musb->is_active || ((musb->a_wait_bcon == 0) - && (musb->xceiv.state == OTG_STATE_A_WAIT_BCON))) { + && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { DBG(4, "%s active, deleting timer\n", otg_state_string(musb)); del_timer(&musb_idle_timer); last_timer = jiffies; @@ -163,8 +162,8 @@ static void omap_set_vbus(struct musb *musb, int is_on) if (is_on) { musb->is_active = 1; - musb->xceiv.default_a = 1; - musb->xceiv.state = OTG_STATE_A_WAIT_VRISE; + musb->xceiv->default_a = 1; + musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; devctl |= MUSB_DEVCTL_SESSION; MUSB_HST_MODE(musb); @@ -175,8 +174,8 @@ static void omap_set_vbus(struct musb *musb, int is_on) * jumping right to B_IDLE... */ - musb->xceiv.default_a = 0; - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->default_a = 0; + musb->xceiv->state = OTG_STATE_B_IDLE; devctl &= ~MUSB_DEVCTL_SESSION; MUSB_DEV_MODE(musb); @@ -188,10 +187,6 @@ static void omap_set_vbus(struct musb *musb, int is_on) otg_state_string(musb), musb_readb(musb->mregs, MUSB_DEVCTL)); } -static int omap_set_power(struct otg_transceiver *x, unsigned mA) -{ - return 0; -} static int musb_platform_resume(struct musb *musb); @@ -202,24 +197,6 @@ int musb_platform_set_mode(struct musb *musb, u8 musb_mode) devctl |= MUSB_DEVCTL_SESSION; musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); - switch (musb_mode) { -#ifdef CONFIG_USB_MUSB_HDRC_HCD - case MUSB_HOST: - otg_set_host(&musb->xceiv, musb->xceiv.host); - break; -#endif -#ifdef CONFIG_USB_GADGET_MUSB_HDRC - case MUSB_PERIPHERAL: - otg_set_peripheral(&musb->xceiv, musb->xceiv.gadget); - break; -#endif -#ifdef CONFIG_USB_MUSB_OTG - case MUSB_OTG: - break; -#endif - default: - return -EINVAL; - } return 0; } @@ -231,6 +208,16 @@ int __init musb_platform_init(struct musb *musb) omap_cfg_reg(AE5_2430_USB0HS_STP); #endif + /* We require some kind of external transceiver, hooked + * up through ULPI. TWL4030-family PMICs include one, + * which needs a driver, drivers aren't always needed. + */ + musb->xceiv = otg_get_transceiver(); + if (!musb->xceiv) { + pr_err("HS USB OTG: no transceiver configured\n"); + return -ENODEV; + } + musb_platform_resume(musb); l = omap_readl(OTG_SYSCONFIG); @@ -240,7 +227,12 @@ int __init musb_platform_init(struct musb *musb) l &= ~AUTOIDLE; /* disable auto idle */ l &= ~NOIDLE; /* remove possible noidle */ l |= SMARTIDLE; /* enable smart idle */ - l |= AUTOIDLE; /* enable auto idle */ + /* + * MUSB AUTOIDLE don't work in 3430. + * Workaround by Richard Woodruff/TI + */ + if (!cpu_is_omap3430()) + l |= AUTOIDLE; /* enable auto idle */ omap_writel(l, OTG_SYSCONFIG); l = omap_readl(OTG_INTERFSEL); @@ -257,9 +249,6 @@ int __init musb_platform_init(struct musb *musb) if (is_host_enabled(musb)) musb->board_set_vbus = omap_set_vbus; - if (is_peripheral_enabled(musb)) - musb->xceiv.set_power = omap_set_power; - musb->a_wait_bcon = MUSB_TIMEOUT_A_WAIT_BCON; setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); @@ -282,8 +271,7 @@ int musb_platform_suspend(struct musb *musb) l |= ENABLEWAKEUP; /* enable wakeup */ omap_writel(l, OTG_SYSCONFIG); - if (musb->xceiv.set_suspend) - musb->xceiv.set_suspend(&musb->xceiv, 1); + otg_set_suspend(musb->xceiv, 1); if (musb->set_clock) musb->set_clock(musb->clock, 0); @@ -300,8 +288,7 @@ static int musb_platform_resume(struct musb *musb) if (!musb->clock) return 0; - if (musb->xceiv.set_suspend) - musb->xceiv.set_suspend(&musb->xceiv, 0); + otg_set_suspend(musb->xceiv, 0); if (musb->set_clock) musb->set_clock(musb->clock, 1); diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index 4ac1477d3569..88b587c703e9 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -259,6 +259,8 @@ void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *buf) tusb_fifo_read_unaligned(fifo, buf, len); } +static struct musb *the_musb; + #ifdef CONFIG_USB_GADGET_MUSB_HDRC /* This is used by gadget drivers, and OTG transceiver logic, allowing @@ -269,7 +271,7 @@ void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *buf) */ static int tusb_draw_power(struct otg_transceiver *x, unsigned mA) { - struct musb *musb = container_of(x, struct musb, xceiv); + struct musb *musb = the_musb; void __iomem *tbase = musb->ctrl_base; u32 reg; @@ -419,7 +421,7 @@ static void musb_do_idle(unsigned long _musb) spin_lock_irqsave(&musb->lock, flags); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_WAIT_BCON: if ((musb->a_wait_bcon != 0) && (musb->idle_timeout == 0 @@ -483,7 +485,7 @@ void musb_platform_try_idle(struct musb *musb, unsigned long timeout) /* Never idle if active, or when VBUS timeout is not set as host */ if (musb->is_active || ((musb->a_wait_bcon == 0) - && (musb->xceiv.state == OTG_STATE_A_WAIT_BCON))) { + && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { DBG(4, "%s active, deleting timer\n", otg_state_string(musb)); del_timer(&musb_idle_timer); last_timer = jiffies; @@ -532,8 +534,8 @@ static void tusb_source_power(struct musb *musb, int is_on) if (musb->set_clock) musb->set_clock(musb->clock, 1); timer = OTG_TIMER_MS(OTG_TIME_A_WAIT_VRISE); - musb->xceiv.default_a = 1; - musb->xceiv.state = OTG_STATE_A_WAIT_VRISE; + musb->xceiv->default_a = 1; + musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; devctl |= MUSB_DEVCTL_SESSION; conf |= TUSB_DEV_CONF_USB_HOST_MODE; @@ -546,24 +548,24 @@ static void tusb_source_power(struct musb *musb, int is_on) /* If ID pin is grounded, we want to be a_idle */ otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT); if (!(otg_stat & TUSB_DEV_OTG_STAT_ID_STATUS)) { - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_WAIT_VRISE: case OTG_STATE_A_WAIT_BCON: - musb->xceiv.state = OTG_STATE_A_WAIT_VFALL; + musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; break; case OTG_STATE_A_WAIT_VFALL: - musb->xceiv.state = OTG_STATE_A_IDLE; + musb->xceiv->state = OTG_STATE_A_IDLE; break; default: - musb->xceiv.state = OTG_STATE_A_IDLE; + musb->xceiv->state = OTG_STATE_A_IDLE; } musb->is_active = 0; - musb->xceiv.default_a = 1; + musb->xceiv->default_a = 1; MUSB_HST_MODE(musb); } else { musb->is_active = 0; - musb->xceiv.default_a = 0; - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->default_a = 0; + musb->xceiv->state = OTG_STATE_B_IDLE; MUSB_DEV_MODE(musb); } @@ -674,7 +676,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) else default_a = is_host_enabled(musb); DBG(2, "Default-%c\n", default_a ? 'A' : 'B'); - musb->xceiv.default_a = default_a; + musb->xceiv->default_a = default_a; tusb_source_power(musb, default_a); /* Don't allow idling immediately */ @@ -686,7 +688,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) if (int_src & TUSB_INT_SRC_VBUS_SENSE_CHNG) { /* B-dev state machine: no vbus ~= disconnect */ - if ((is_otg_enabled(musb) && !musb->xceiv.default_a) + if ((is_otg_enabled(musb) && !musb->xceiv->default_a) || !is_host_enabled(musb)) { #ifdef CONFIG_USB_MUSB_HDRC_HCD /* ? musb_root_disconnect(musb); */ @@ -701,9 +703,9 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) if (otg_stat & TUSB_DEV_OTG_STAT_SESS_END) { DBG(1, "Forcing disconnect (no interrupt)\n"); - if (musb->xceiv.state != OTG_STATE_B_IDLE) { + if (musb->xceiv->state != OTG_STATE_B_IDLE) { /* INTR_DISCONNECT can hide... */ - musb->xceiv.state = OTG_STATE_B_IDLE; + musb->xceiv->state = OTG_STATE_B_IDLE; musb->int_usb |= MUSB_INTR_DISCONNECT; } musb->is_active = 0; @@ -717,7 +719,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) DBG(2, "vbus change, %s, otg %03x\n", otg_state_string(musb), otg_stat); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_IDLE: DBG(2, "Got SRP, turning on VBUS\n"); musb_set_vbus(musb, 1); @@ -765,7 +767,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) DBG(4, "%s timer, %03x\n", otg_state_string(musb), otg_stat); - switch (musb->xceiv.state) { + switch (musb->xceiv->state) { case OTG_STATE_A_WAIT_VRISE: /* VBUS has probably been valid for a while now, * but may well have bounced out of range a bit @@ -777,7 +779,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase) DBG(2, "devctl %02x\n", devctl); break; } - musb->xceiv.state = OTG_STATE_A_WAIT_BCON; + musb->xceiv->state = OTG_STATE_A_WAIT_BCON; musb->is_active = 0; idle_timeout = jiffies + msecs_to_jiffies(musb->a_wait_bcon); @@ -1093,9 +1095,14 @@ int __init musb_platform_init(struct musb *musb) { struct platform_device *pdev; struct resource *mem; - void __iomem *sync; + void __iomem *sync = NULL; int ret; + usb_nop_xceiv_register(); + musb->xceiv = otg_get_transceiver(); + if (!musb->xceiv) + return -ENODEV; + pdev = to_platform_device(musb->controller); /* dma address for async dma */ @@ -1106,14 +1113,16 @@ int __init musb_platform_init(struct musb *musb) mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (!mem) { pr_debug("no sync dma resource?\n"); - return -ENODEV; + ret = -ENODEV; + goto done; } musb->sync = mem->start; sync = ioremap(mem->start, mem->end - mem->start + 1); if (!sync) { pr_debug("ioremap for sync failed\n"); - return -ENOMEM; + ret = -ENOMEM; + goto done; } musb->sync_va = sync; @@ -1126,28 +1135,37 @@ int __init musb_platform_init(struct musb *musb) if (ret) { printk(KERN_ERR "Could not start tusb6010 (%d)\n", ret); - return -ENODEV; + goto done; } musb->isr = tusb_interrupt; if (is_host_enabled(musb)) musb->board_set_vbus = tusb_source_power; - if (is_peripheral_enabled(musb)) - musb->xceiv.set_power = tusb_draw_power; + if (is_peripheral_enabled(musb)) { + musb->xceiv->set_power = tusb_draw_power; + the_musb = musb; + } setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); +done: + if (ret < 0) { + if (sync) + iounmap(sync); + usb_nop_xceiv_unregister(); + } return ret; } int musb_platform_exit(struct musb *musb) { del_timer_sync(&musb_idle_timer); + the_musb = NULL; if (musb->board_set_power) musb->board_set_power(0); iounmap(musb->sync_va); - + usb_nop_xceiv_unregister(); return 0; } diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c index c567168f89af..af456b48985f 100644 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ b/drivers/usb/otg/nop-usb-xceiv.c @@ -22,8 +22,8 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Current status: - * this is to add "nop" transceiver for all those phy which is - * autonomous such as isp1504 etc. + * This provides a "nop" transceiver for PHYs which are + * autonomous such as isp1504, isp1707, etc. */ #include <linux/module.h> @@ -36,30 +36,26 @@ struct nop_usb_xceiv { struct device *dev; }; -static u64 nop_xceiv_dmamask = DMA_BIT_MASK(32); - -static struct platform_device nop_xceiv_device = { - .name = "nop_usb_xceiv", - .id = -1, - .dev = { - .dma_mask = &nop_xceiv_dmamask, - .coherent_dma_mask = DMA_BIT_MASK(32), - .platform_data = NULL, - }, -}; +static struct platform_device *pd; void usb_nop_xceiv_register(void) { - if (platform_device_register(&nop_xceiv_device) < 0) { + if (pd) + return; + pd = platform_device_register_simple("nop_usb_xceiv", -1, NULL, 0); + if (!pd) { printk(KERN_ERR "Unable to register usb nop transceiver\n"); return; } } +EXPORT_SYMBOL(usb_nop_xceiv_register); void usb_nop_xceiv_unregister(void) { - platform_device_unregister(&nop_xceiv_device); + platform_device_unregister(pd); + pd = NULL; } +EXPORT_SYMBOL(usb_nop_xceiv_unregister); static inline struct nop_usb_xceiv *xceiv_to_nop(struct otg_transceiver *x) { diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index d9478d0e1c8b..9e3e7a5c258b 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -217,6 +217,7 @@ /* In module TWL4030_MODULE_PM_MASTER */ #define PROTECT_KEY 0x0E +#define STS_HW_CONDITIONS 0x0F /* In module TWL4030_MODULE_PM_RECEIVER */ #define VUSB_DEDICATED1 0x7D @@ -351,15 +352,26 @@ static enum linkstat twl4030_usb_linkstat(struct twl4030_usb *twl) int status; int linkstat = USB_LINK_UNKNOWN; - /* STS_HW_CONDITIONS */ - status = twl4030_readb(twl, TWL4030_MODULE_PM_MASTER, 0x0f); + /* + * For ID/VBUS sensing, see manual section 15.4.8 ... + * except when using only battery backup power, two + * comparators produce VBUS_PRES and ID_PRES signals, + * which don't match docs elsewhere. But ... BIT(7) + * and BIT(2) of STS_HW_CONDITIONS, respectively, do + * seem to match up. If either is true the USB_PRES + * signal is active, the OTG module is activated, and + * its interrupt may be raised (may wake the system). + */ + status = twl4030_readb(twl, TWL4030_MODULE_PM_MASTER, + STS_HW_CONDITIONS); if (status < 0) dev_err(twl->dev, "USB link status err %d\n", status); - else if (status & BIT(7)) - linkstat = USB_LINK_VBUS; - else if (status & BIT(2)) - linkstat = USB_LINK_ID; - else + else if (status & (BIT(7) | BIT(2))) { + if (status & BIT(2)) + linkstat = USB_LINK_ID; + else + linkstat = USB_LINK_VBUS; + } else linkstat = USB_LINK_NONE; dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n", @@ -641,7 +653,7 @@ static int twl4030_set_host(struct otg_transceiver *x, struct usb_bus *host) return 0; } -static int __init twl4030_usb_probe(struct platform_device *pdev) +static int __devinit twl4030_usb_probe(struct platform_device *pdev) { struct twl4030_usb_data *pdata = pdev->dev.platform_data; struct twl4030_usb *twl; diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c index 6d106e74265e..2cbfab3716e5 100644 --- a/drivers/usb/serial/aircable.c +++ b/drivers/usb/serial/aircable.c @@ -364,7 +364,7 @@ static int aircable_attach(struct usb_serial *serial) return 0; } -static void aircable_shutdown(struct usb_serial *serial) +static void aircable_release(struct usb_serial *serial) { struct usb_serial_port *port = serial->port[0]; @@ -375,7 +375,6 @@ static void aircable_shutdown(struct usb_serial *serial) if (priv) { serial_buf_free(priv->tx_buf); serial_buf_free(priv->rx_buf); - usb_set_serial_port_data(port, NULL); kfree(priv); } } @@ -601,7 +600,7 @@ static struct usb_serial_driver aircable_device = { .num_ports = 1, .attach = aircable_attach, .probe = aircable_probe, - .shutdown = aircable_shutdown, + .release = aircable_release, .write = aircable_write, .write_room = aircable_write_room, .write_bulk_callback = aircable_write_bulk_callback, diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index b7eacad4d48c..7033b031b443 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -90,11 +90,10 @@ static int debug; /* function prototypes for a Belkin USB Serial Adapter F5U103 */ static int belkin_sa_startup(struct usb_serial *serial); -static void belkin_sa_shutdown(struct usb_serial *serial); +static void belkin_sa_release(struct usb_serial *serial); static int belkin_sa_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void belkin_sa_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void belkin_sa_close(struct usb_serial_port *port); static void belkin_sa_read_int_callback(struct urb *urb); static void belkin_sa_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios * old); @@ -143,7 +142,7 @@ static struct usb_serial_driver belkin_device = { .tiocmget = belkin_sa_tiocmget, .tiocmset = belkin_sa_tiocmset, .attach = belkin_sa_startup, - .shutdown = belkin_sa_shutdown, + .release = belkin_sa_release, }; @@ -198,14 +197,13 @@ static int belkin_sa_startup(struct usb_serial *serial) } -static void belkin_sa_shutdown(struct usb_serial *serial) +static void belkin_sa_release(struct usb_serial *serial) { struct belkin_sa_private *priv; int i; dbg("%s", __func__); - /* stop reads and writes on all ports */ for (i = 0; i < serial->num_ports; ++i) { /* My special items, the standard routines free my urbs */ priv = usb_get_serial_port_data(serial->port[i]); @@ -244,8 +242,7 @@ exit: } /* belkin_sa_open */ -static void belkin_sa_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void belkin_sa_close(struct usb_serial_port *port) { dbg("%s port %d", __func__, port->number); diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c index 83bbb5bca2ef..ba555c528cc6 100644 --- a/drivers/usb/serial/bus.c +++ b/drivers/usb/serial/bus.c @@ -59,23 +59,22 @@ static int usb_serial_device_probe(struct device *dev) retval = -ENODEV; goto exit; } + if (port->dev_state != PORT_REGISTERING) + goto exit; driver = port->serial->type; if (driver->port_probe) { - if (!try_module_get(driver->driver.owner)) { - dev_err(dev, "module get failed, exiting\n"); - retval = -EIO; - goto exit; - } retval = driver->port_probe(port); - module_put(driver->driver.owner); if (retval) goto exit; } retval = device_create_file(dev, &dev_attr_port_number); - if (retval) + if (retval) { + if (driver->port_remove) + retval = driver->port_remove(port); goto exit; + } minor = port->number; tty_register_device(usb_serial_tty_driver, minor, dev); @@ -98,19 +97,15 @@ static int usb_serial_device_remove(struct device *dev) if (!port) return -ENODEV; + if (port->dev_state != PORT_UNREGISTERING) + return retval; + device_remove_file(&port->dev, &dev_attr_port_number); driver = port->serial->type; - if (driver->port_remove) { - if (!try_module_get(driver->driver.owner)) { - dev_err(dev, "module get failed, exiting\n"); - retval = -EIO; - goto exit; - } + if (driver->port_remove) retval = driver->port_remove(port); - module_put(driver->driver.owner); - } -exit: + minor = port->number; tty_unregister_device(usb_serial_tty_driver, minor); dev_info(dev, "%s converter now disconnected from ttyUSB%d\n", diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index ab4cc277aa65..2830766f5b39 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -262,32 +262,40 @@ error: kfree(priv); return r; } -static void ch341_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int ch341_carrier_raised(struct usb_serial_port *port) +{ + struct ch341_private *priv = usb_get_serial_port_data(port); + if (priv->line_status & CH341_BIT_DCD) + return 1; + return 0; +} + +static void ch341_dtr_rts(struct usb_serial_port *port, int on) { struct ch341_private *priv = usb_get_serial_port_data(port); unsigned long flags; - unsigned int c_cflag; dbg("%s - port %d", __func__, port->number); + /* drop DTR and RTS */ + spin_lock_irqsave(&priv->lock, flags); + if (on) + priv->line_control |= CH341_BIT_RTS | CH341_BIT_DTR; + else + priv->line_control &= ~(CH341_BIT_RTS | CH341_BIT_DTR); + spin_unlock_irqrestore(&priv->lock, flags); + ch341_set_handshake(port->serial->dev, priv->line_control); + wake_up_interruptible(&priv->delta_msr_wait); +} + +static void ch341_close(struct usb_serial_port *port) +{ + dbg("%s - port %d", __func__, port->number); /* shutdown our urbs */ dbg("%s - shutting down urbs", __func__); usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); usb_kill_urb(port->interrupt_in_urb); - - if (tty) { - c_cflag = tty->termios->c_cflag; - if (c_cflag & HUPCL) { - /* drop DTR and RTS */ - spin_lock_irqsave(&priv->lock, flags); - priv->line_control = 0; - spin_unlock_irqrestore(&priv->lock, flags); - ch341_set_handshake(port->serial->dev, 0); - } - } - wake_up_interruptible(&priv->delta_msr_wait); } @@ -302,7 +310,6 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port, dbg("ch341_open()"); priv->baud_rate = DEFAULT_BAUD_RATE; - priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR; r = ch341_configure(serial->dev, priv); if (r) @@ -322,7 +329,7 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port, if (r) { dev_err(&port->dev, "%s - failed submitting interrupt urb," " error %d\n", __func__, r); - ch341_close(tty, port, NULL); + ch341_close(port); return -EPROTO; } @@ -343,9 +350,6 @@ static void ch341_set_termios(struct tty_struct *tty, dbg("ch341_set_termios()"); - if (!tty || !tty->termios) - return; - baud_rate = tty_get_baud_rate(tty); priv->baud_rate = baud_rate; @@ -568,6 +572,8 @@ static struct usb_serial_driver ch341_device = { .usb_driver = &ch341_driver, .num_ports = 1, .open = ch341_open, + .dtr_rts = ch341_dtr_rts, + .carrier_raised = ch341_carrier_raised, .close = ch341_close, .ioctl = ch341_ioctl, .set_termios = ch341_set_termios, diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index 19e24045b137..0e4f2e41ace5 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -169,7 +169,11 @@ static int usb_console_setup(struct console *co, char *options) kfree(tty); } } - + /* Now that any required fake tty operations are completed restore + * the tty port count */ + --port->port.count; + /* The console is special in terms of closing the device so + * indicate this port is now acting as a system console. */ port->console = 1; retval = 0; @@ -182,7 +186,7 @@ free_tty: kfree(tty); reset_open_count: port->port.count = 0; -goto out; + goto out; } static void usb_console_write(struct console *co, @@ -202,7 +206,7 @@ static void usb_console_write(struct console *co, dbg("%s - port %d, %d byte(s)", __func__, port->number, count); - if (!port->port.count) { + if (!port->console) { dbg("%s - port not opened", __func__); return; } @@ -298,8 +302,7 @@ void usb_serial_console_exit(void) { if (usbcons_info.port) { unregister_console(&usbcons); - if (usbcons_info.port->port.count) - usbcons_info.port->port.count--; + usbcons_info.port->console = 0; usbcons_info.port = NULL; } } diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index e8d5133ce9c8..e9a40b820fd4 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -1,5 +1,5 @@ /* - * Silicon Laboratories CP2101/CP2102 USB to RS232 serial adaptor driver + * Silicon Laboratories CP210x USB to RS232 serial adaptor driver * * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk) * @@ -27,44 +27,48 @@ /* * Version Information */ -#define DRIVER_VERSION "v0.08" -#define DRIVER_DESC "Silicon Labs CP2101/CP2102 RS232 serial adaptor driver" +#define DRIVER_VERSION "v0.09" +#define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver" /* * Function Prototypes */ -static int cp2101_open(struct tty_struct *, struct usb_serial_port *, +static int cp210x_open(struct tty_struct *, struct usb_serial_port *, struct file *); -static void cp2101_cleanup(struct usb_serial_port *); -static void cp2101_close(struct tty_struct *, struct usb_serial_port *, - struct file*); -static void cp2101_get_termios(struct tty_struct *, +static void cp210x_cleanup(struct usb_serial_port *); +static void cp210x_close(struct usb_serial_port *); +static void cp210x_get_termios(struct tty_struct *, struct usb_serial_port *port); -static void cp2101_get_termios_port(struct usb_serial_port *port, +static void cp210x_get_termios_port(struct usb_serial_port *port, unsigned int *cflagp, unsigned int *baudp); -static void cp2101_set_termios(struct tty_struct *, struct usb_serial_port *, +static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, struct ktermios*); -static int cp2101_tiocmget(struct tty_struct *, struct file *); -static int cp2101_tiocmset(struct tty_struct *, struct file *, +static int cp210x_tiocmget(struct tty_struct *, struct file *); +static int cp210x_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int); -static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *, +static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, unsigned int, unsigned int); -static void cp2101_break_ctl(struct tty_struct *, int); -static int cp2101_startup(struct usb_serial *); -static void cp2101_shutdown(struct usb_serial *); +static void cp210x_break_ctl(struct tty_struct *, int); +static int cp210x_startup(struct usb_serial *); +static void cp210x_disconnect(struct usb_serial *); static int debug; static struct usb_device_id id_table [] = { { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */ { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */ + { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */ { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ + { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ { USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */ { USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */ { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */ { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */ { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */ + { USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */ + { USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */ + { USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */ { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */ { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */ { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ @@ -85,10 +89,12 @@ static struct usb_device_id id_table [] = { { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */ { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */ { USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */ + { USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */ { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */ { USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */ { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */ { USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */ + { USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */ { USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */ { USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */ { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */ @@ -99,7 +105,9 @@ static struct usb_device_id id_table [] = { { USB_DEVICE(0x10C4, 0xF003) }, /* Elan Digital Systems USBpulse100 */ { USB_DEVICE(0x10C4, 0xF004) }, /* Elan Digital Systems USBcount50 */ { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */ + { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */ { USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */ + { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */ { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */ { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */ { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */ @@ -108,53 +116,70 @@ static struct usb_device_id id_table [] = { MODULE_DEVICE_TABLE(usb, id_table); -static struct usb_driver cp2101_driver = { - .name = "cp2101", +static struct usb_driver cp210x_driver = { + .name = "cp210x", .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, .id_table = id_table, .no_dynamic_id = 1, }; -static struct usb_serial_driver cp2101_device = { +static struct usb_serial_driver cp210x_device = { .driver = { .owner = THIS_MODULE, - .name = "cp2101", + .name = "cp210x", }, - .usb_driver = &cp2101_driver, + .usb_driver = &cp210x_driver, .id_table = id_table, .num_ports = 1, - .open = cp2101_open, - .close = cp2101_close, - .break_ctl = cp2101_break_ctl, - .set_termios = cp2101_set_termios, - .tiocmget = cp2101_tiocmget, - .tiocmset = cp2101_tiocmset, - .attach = cp2101_startup, - .shutdown = cp2101_shutdown, + .open = cp210x_open, + .close = cp210x_close, + .break_ctl = cp210x_break_ctl, + .set_termios = cp210x_set_termios, + .tiocmget = cp210x_tiocmget, + .tiocmset = cp210x_tiocmset, + .attach = cp210x_startup, + .disconnect = cp210x_disconnect, }; /* Config request types */ #define REQTYPE_HOST_TO_DEVICE 0x41 #define REQTYPE_DEVICE_TO_HOST 0xc1 -/* Config SET requests. To GET, add 1 to the request number */ -#define CP2101_UART 0x00 /* Enable / Disable */ -#define CP2101_BAUDRATE 0x01 /* (BAUD_RATE_GEN_FREQ / baudrate) */ -#define CP2101_BITS 0x03 /* 0x(0)(databits)(parity)(stopbits) */ -#define CP2101_BREAK 0x05 /* On / Off */ -#define CP2101_CONTROL 0x07 /* Flow control line states */ -#define CP2101_MODEMCTL 0x13 /* Modem controls */ -#define CP2101_CONFIG_6 0x19 /* 6 bytes of config data ??? */ - -/* CP2101_UART */ +/* Config request codes */ +#define CP210X_IFC_ENABLE 0x00 +#define CP210X_SET_BAUDDIV 0x01 +#define CP210X_GET_BAUDDIV 0x02 +#define CP210X_SET_LINE_CTL 0x03 +#define CP210X_GET_LINE_CTL 0x04 +#define CP210X_SET_BREAK 0x05 +#define CP210X_IMM_CHAR 0x06 +#define CP210X_SET_MHS 0x07 +#define CP210X_GET_MDMSTS 0x08 +#define CP210X_SET_XON 0x09 +#define CP210X_SET_XOFF 0x0A +#define CP210X_SET_EVENTMASK 0x0B +#define CP210X_GET_EVENTMASK 0x0C +#define CP210X_SET_CHAR 0x0D +#define CP210X_GET_CHARS 0x0E +#define CP210X_GET_PROPS 0x0F +#define CP210X_GET_COMM_STATUS 0x10 +#define CP210X_RESET 0x11 +#define CP210X_PURGE 0x12 +#define CP210X_SET_FLOW 0x13 +#define CP210X_GET_FLOW 0x14 +#define CP210X_EMBED_EVENTS 0x15 +#define CP210X_GET_EVENTSTATE 0x16 +#define CP210X_SET_CHARS 0x19 + +/* CP210X_IFC_ENABLE */ #define UART_ENABLE 0x0001 #define UART_DISABLE 0x0000 -/* CP2101_BAUDRATE */ +/* CP210X_(SET|GET)_BAUDDIV */ #define BAUD_RATE_GEN_FREQ 0x384000 -/* CP2101_BITS */ +/* CP210X_(SET|GET)_LINE_CTL */ #define BITS_DATA_MASK 0X0f00 #define BITS_DATA_5 0X0500 #define BITS_DATA_6 0X0600 @@ -174,11 +199,11 @@ static struct usb_serial_driver cp2101_device = { #define BITS_STOP_1_5 0x0001 #define BITS_STOP_2 0x0002 -/* CP2101_BREAK */ +/* CP210X_SET_BREAK */ #define BREAK_ON 0x0000 #define BREAK_OFF 0x0001 -/* CP2101_CONTROL */ +/* CP210X_(SET_MHS|GET_MDMSTS) */ #define CONTROL_DTR 0x0001 #define CONTROL_RTS 0x0002 #define CONTROL_CTS 0x0010 @@ -189,13 +214,13 @@ static struct usb_serial_driver cp2101_device = { #define CONTROL_WRITE_RTS 0x0200 /* - * cp2101_get_config - * Reads from the CP2101 configuration registers + * cp210x_get_config + * Reads from the CP210x configuration registers * 'size' is specified in bytes. * 'data' is a pointer to a pre-allocated array of integers large * enough to hold 'size' bytes (with 4 bytes to each integer) */ -static int cp2101_get_config(struct usb_serial_port *port, u8 request, +static int cp210x_get_config(struct usb_serial_port *port, u8 request, unsigned int *data, int size) { struct usb_serial *serial = port->serial; @@ -211,9 +236,6 @@ static int cp2101_get_config(struct usb_serial_port *port, u8 request, return -ENOMEM; } - /* For get requests, the request number must be incremented */ - request++; - /* Issue the request, attempting to read 'size' bytes */ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), request, REQTYPE_DEVICE_TO_HOST, 0x0000, @@ -236,12 +258,12 @@ static int cp2101_get_config(struct usb_serial_port *port, u8 request, } /* - * cp2101_set_config - * Writes to the CP2101 configuration registers + * cp210x_set_config + * Writes to the CP210x configuration registers * Values less than 16 bits wide are sent directly * 'size' is specified in bytes. */ -static int cp2101_set_config(struct usb_serial_port *port, u8 request, +static int cp210x_set_config(struct usb_serial_port *port, u8 request, unsigned int *data, int size) { struct usb_serial *serial = port->serial; @@ -292,21 +314,21 @@ static int cp2101_set_config(struct usb_serial_port *port, u8 request, } /* - * cp2101_set_config_single - * Convenience function for calling cp2101_set_config on single data values + * cp210x_set_config_single + * Convenience function for calling cp210x_set_config on single data values * without requiring an integer pointer */ -static inline int cp2101_set_config_single(struct usb_serial_port *port, +static inline int cp210x_set_config_single(struct usb_serial_port *port, u8 request, unsigned int data) { - return cp2101_set_config(port, request, &data, 2); + return cp210x_set_config(port, request, &data, 2); } /* - * cp2101_quantise_baudrate + * cp210x_quantise_baudrate * Quantises the baud rate as per AN205 Table 1 */ -static unsigned int cp2101_quantise_baudrate(unsigned int baud) { +static unsigned int cp210x_quantise_baudrate(unsigned int baud) { if (baud <= 56) baud = 0; else if (baud <= 300) baud = 300; else if (baud <= 600) baud = 600; @@ -343,7 +365,7 @@ static unsigned int cp2101_quantise_baudrate(unsigned int baud) { return baud; } -static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, +static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp) { struct usb_serial *serial = port->serial; @@ -351,7 +373,7 @@ static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, dbg("%s - port %d", __func__, port->number); - if (cp2101_set_config_single(port, CP2101_UART, UART_ENABLE)) { + if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) { dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); return -EPROTO; @@ -373,17 +395,17 @@ static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port, } /* Configure the termios structure */ - cp2101_get_termios(tty, port); + cp210x_get_termios(tty, port); /* Set the DTR and RTS pins low */ - cp2101_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data + cp210x_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data : port, NULL, TIOCM_DTR | TIOCM_RTS, 0); return 0; } -static void cp2101_cleanup(struct usb_serial_port *port) +static void cp210x_cleanup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; @@ -398,8 +420,7 @@ static void cp2101_cleanup(struct usb_serial_port *port) } } -static void cp2101_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static void cp210x_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); @@ -410,23 +431,23 @@ static void cp2101_close(struct tty_struct *tty, struct usb_serial_port *port, mutex_lock(&port->serial->disc_mutex); if (!port->serial->disconnected) - cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); + cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE); mutex_unlock(&port->serial->disc_mutex); } /* - * cp2101_get_termios + * cp210x_get_termios * Reads the baud rate, data bits, parity, stop bits and flow control mode * from the device, corrects any unsupported values, and configures the * termios structure to reflect the state of the device */ -static void cp2101_get_termios(struct tty_struct *tty, +static void cp210x_get_termios(struct tty_struct *tty, struct usb_serial_port *port) { unsigned int baud; if (tty) { - cp2101_get_termios_port(tty->driver_data, + cp210x_get_termios_port(tty->driver_data, &tty->termios->c_cflag, &baud); tty_encode_baud_rate(tty, baud, baud); } @@ -434,15 +455,15 @@ static void cp2101_get_termios(struct tty_struct *tty, else { unsigned int cflag; cflag = 0; - cp2101_get_termios_port(port, &cflag, &baud); + cp210x_get_termios_port(port, &cflag, &baud); } } /* - * cp2101_get_termios_port - * This is the heart of cp2101_get_termios which always uses a &usb_serial_port. + * cp210x_get_termios_port + * This is the heart of cp210x_get_termios which always uses a &usb_serial_port. */ -static void cp2101_get_termios_port(struct usb_serial_port *port, +static void cp210x_get_termios_port(struct usb_serial_port *port, unsigned int *cflagp, unsigned int *baudp) { unsigned int cflag, modem_ctl[4]; @@ -451,17 +472,17 @@ static void cp2101_get_termios_port(struct usb_serial_port *port, dbg("%s - port %d", __func__, port->number); - cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2); + cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2); /* Convert to baudrate */ if (baud) - baud = cp2101_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); + baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud); dbg("%s - baud rate = %d", __func__, baud); *baudp = baud; cflag = *cflagp; - cp2101_get_config(port, CP2101_BITS, &bits, 2); + cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); cflag &= ~CSIZE; switch (bits & BITS_DATA_MASK) { case BITS_DATA_5: @@ -486,14 +507,14 @@ static void cp2101_get_termios_port(struct usb_serial_port *port, cflag |= CS8; bits &= ~BITS_DATA_MASK; bits |= BITS_DATA_8; - cp2101_set_config(port, CP2101_BITS, &bits, 2); + cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); break; default: dbg("%s - Unknown number of data bits, using 8", __func__); cflag |= CS8; bits &= ~BITS_DATA_MASK; bits |= BITS_DATA_8; - cp2101_set_config(port, CP2101_BITS, &bits, 2); + cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); break; } @@ -516,20 +537,20 @@ static void cp2101_get_termios_port(struct usb_serial_port *port, __func__); cflag &= ~PARENB; bits &= ~BITS_PARITY_MASK; - cp2101_set_config(port, CP2101_BITS, &bits, 2); + cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); break; case BITS_PARITY_SPACE: dbg("%s - parity = SPACE (not supported, disabling parity)", __func__); cflag &= ~PARENB; bits &= ~BITS_PARITY_MASK; - cp2101_set_config(port, CP2101_BITS, &bits, 2); + cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); break; default: dbg("%s - Unknown parity mode, disabling parity", __func__); cflag &= ~PARENB; bits &= ~BITS_PARITY_MASK; - cp2101_set_config(port, CP2101_BITS, &bits, 2); + cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); break; } @@ -542,7 +563,7 @@ static void cp2101_get_termios_port(struct usb_serial_port *port, dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)", __func__); bits &= ~BITS_STOP_MASK; - cp2101_set_config(port, CP2101_BITS, &bits, 2); + cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); break; case BITS_STOP_2: dbg("%s - stop bits = 2", __func__); @@ -552,11 +573,11 @@ static void cp2101_get_termios_port(struct usb_serial_port *port, dbg("%s - Unknown number of stop bits, using 1 stop bit", __func__); bits &= ~BITS_STOP_MASK; - cp2101_set_config(port, CP2101_BITS, &bits, 2); + cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2); break; } - cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); + cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); if (modem_ctl[0] & 0x0008) { dbg("%s - flow control = CRTSCTS", __func__); cflag |= CRTSCTS; @@ -568,7 +589,7 @@ static void cp2101_get_termios_port(struct usb_serial_port *port, *cflagp = cflag; } -static void cp2101_set_termios(struct tty_struct *tty, +static void cp210x_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { unsigned int cflag, old_cflag; @@ -583,13 +604,13 @@ static void cp2101_set_termios(struct tty_struct *tty, tty->termios->c_cflag &= ~CMSPAR; cflag = tty->termios->c_cflag; old_cflag = old_termios->c_cflag; - baud = cp2101_quantise_baudrate(tty_get_baud_rate(tty)); + baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty)); /* If the baud rate is to be updated*/ if (baud != tty_termios_baud_rate(old_termios) && baud != 0) { dbg("%s - Setting baud rate to %d baud", __func__, baud); - if (cp2101_set_config_single(port, CP2101_BAUDRATE, + if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV, ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) { dbg("Baud rate requested not supported by device\n"); baud = tty_termios_baud_rate(old_termios); @@ -600,7 +621,7 @@ static void cp2101_set_termios(struct tty_struct *tty, /* If the number of data bits is to be updated */ if ((cflag & CSIZE) != (old_cflag & CSIZE)) { - cp2101_get_config(port, CP2101_BITS, &bits, 2); + cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); bits &= ~BITS_DATA_MASK; switch (cflag & CSIZE) { case CS5: @@ -624,19 +645,19 @@ static void cp2101_set_termios(struct tty_struct *tty, dbg("%s - data bits = 9", __func__); break;*/ default: - dbg("cp2101 driver does not " + dbg("cp210x driver does not " "support the number of bits requested," " using 8 bit mode\n"); bits |= BITS_DATA_8; break; } - if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) + if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) dbg("Number of data bits requested " "not supported by device\n"); } if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) { - cp2101_get_config(port, CP2101_BITS, &bits, 2); + cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); bits &= ~BITS_PARITY_MASK; if (cflag & PARENB) { if (cflag & PARODD) { @@ -647,13 +668,13 @@ static void cp2101_set_termios(struct tty_struct *tty, dbg("%s - parity = EVEN", __func__); } } - if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) + if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) dbg("Parity mode not supported " "by device\n"); } if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { - cp2101_get_config(port, CP2101_BITS, &bits, 2); + cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2); bits &= ~BITS_STOP_MASK; if (cflag & CSTOPB) { bits |= BITS_STOP_2; @@ -662,13 +683,13 @@ static void cp2101_set_termios(struct tty_struct *tty, bits |= BITS_STOP_1; dbg("%s - stop bits = 1", __func__); } - if (cp2101_set_config(port, CP2101_BITS, &bits, 2)) + if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2)) dbg("Number of stop bits requested " "not supported by device\n"); } if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { - cp2101_get_config(port, CP2101_MODEMCTL, modem_ctl, 16); + cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16); dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", __func__, modem_ctl[0], modem_ctl[1], modem_ctl[2], modem_ctl[3]); @@ -688,19 +709,19 @@ static void cp2101_set_termios(struct tty_struct *tty, dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x", __func__, modem_ctl[0], modem_ctl[1], modem_ctl[2], modem_ctl[3]); - cp2101_set_config(port, CP2101_MODEMCTL, modem_ctl, 16); + cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16); } } -static int cp2101_tiocmset (struct tty_struct *tty, struct file *file, +static int cp210x_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; - return cp2101_tiocmset_port(port, file, set, clear); + return cp210x_tiocmset_port(port, file, set, clear); } -static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *file, +static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) { unsigned int control = 0; @@ -726,10 +747,10 @@ static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *file, dbg("%s - control = 0x%.4x", __func__, control); - return cp2101_set_config(port, CP2101_CONTROL, &control, 2); + return cp210x_set_config(port, CP210X_SET_MHS, &control, 2); } -static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) +static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) { struct usb_serial_port *port = tty->driver_data; unsigned int control; @@ -737,7 +758,7 @@ static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) dbg("%s - port %d", __func__, port->number); - cp2101_get_config(port, CP2101_CONTROL, &control, 1); + cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) |((control & CONTROL_RTS) ? TIOCM_RTS : 0) @@ -751,7 +772,7 @@ static int cp2101_tiocmget (struct tty_struct *tty, struct file *file) return result; } -static void cp2101_break_ctl (struct tty_struct *tty, int break_state) +static void cp210x_break_ctl (struct tty_struct *tty, int break_state) { struct usb_serial_port *port = tty->driver_data; unsigned int state; @@ -763,17 +784,17 @@ static void cp2101_break_ctl (struct tty_struct *tty, int break_state) state = BREAK_ON; dbg("%s - turning break %s", __func__, state == BREAK_OFF ? "off" : "on"); - cp2101_set_config(port, CP2101_BREAK, &state, 2); + cp210x_set_config(port, CP210X_SET_BREAK, &state, 2); } -static int cp2101_startup(struct usb_serial *serial) +static int cp210x_startup(struct usb_serial *serial) { - /* CP2101 buffers behave strangely unless device is reset */ + /* cp210x buffers behave strangely unless device is reset */ usb_reset_device(serial->dev); return 0; } -static void cp2101_shutdown(struct usb_serial *serial) +static void cp210x_disconnect(struct usb_serial *serial) { int i; @@ -781,21 +802,21 @@ static void cp2101_shutdown(struct usb_serial *serial) /* Stop reads and writes on all ports */ for (i = 0; i < serial->num_ports; ++i) - cp2101_cleanup(serial->port[i]); + cp210x_cleanup(serial->port[i]); } -static int __init cp2101_init(void) +static int __init cp210x_init(void) { int retval; - retval = usb_serial_register(&cp2101_device); + retval = usb_serial_register(&cp210x_device); if (retval) return retval; /* Failed to register */ - retval = usb_register(&cp2101_driver); + retval = usb_register(&cp210x_driver); if (retval) { /* Failed to register */ - usb_serial_deregister(&cp2101_device); + usb_serial_deregister(&cp210x_device); return retval; } @@ -805,14 +826,14 @@ static int __init cp2101_init(void) return 0; } -static void __exit cp2101_exit(void) +static void __exit cp210x_exit(void) { - usb_deregister(&cp2101_driver); - usb_serial_deregister(&cp2101_device); + usb_deregister(&cp210x_driver); + usb_serial_deregister(&cp210x_device); } -module_init(cp2101_init); -module_exit(cp2101_exit); +module_init(cp210x_init); +module_exit(cp210x_exit); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_VERSION(DRIVER_VERSION); diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index dd501bb63ed6..336523fd7366 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -58,11 +58,11 @@ static int debug; /* Function prototypes */ static int cyberjack_startup(struct usb_serial *serial); -static void cyberjack_shutdown(struct usb_serial *serial); +static void cyberjack_disconnect(struct usb_serial *serial); +static void cyberjack_release(struct usb_serial *serial); static int cyberjack_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void cyberjack_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void cyberjack_close(struct usb_serial_port *port); static int cyberjack_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int cyberjack_write_room(struct tty_struct *tty); @@ -95,7 +95,8 @@ static struct usb_serial_driver cyberjack_device = { .id_table = id_table, .num_ports = 1, .attach = cyberjack_startup, - .shutdown = cyberjack_shutdown, + .disconnect = cyberjack_disconnect, + .release = cyberjack_release, .open = cyberjack_open, .close = cyberjack_close, .write = cyberjack_write, @@ -149,17 +150,25 @@ static int cyberjack_startup(struct usb_serial *serial) return 0; } -static void cyberjack_shutdown(struct usb_serial *serial) +static void cyberjack_disconnect(struct usb_serial *serial) { int i; dbg("%s", __func__); - for (i = 0; i < serial->num_ports; ++i) { + for (i = 0; i < serial->num_ports; ++i) usb_kill_urb(serial->port[i]->interrupt_in_urb); +} + +static void cyberjack_release(struct usb_serial *serial) +{ + int i; + + dbg("%s", __func__); + + for (i = 0; i < serial->num_ports; ++i) { /* My special items, the standard routines free my urbs */ kfree(usb_get_serial_port_data(serial->port[i])); - usb_set_serial_port_data(serial->port[i], NULL); } } @@ -185,8 +194,7 @@ static int cyberjack_open(struct tty_struct *tty, return result; } -static void cyberjack_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void cyberjack_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index e568710b263f..59adfe123110 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -171,11 +171,11 @@ struct cypress_buf { static int cypress_earthmate_startup(struct usb_serial *serial); static int cypress_hidcom_startup(struct usb_serial *serial); static int cypress_ca42v2_startup(struct usb_serial *serial); -static void cypress_shutdown(struct usb_serial *serial); +static void cypress_release(struct usb_serial *serial); static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void cypress_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void cypress_close(struct usb_serial_port *port); +static void cypress_dtr_rts(struct usb_serial_port *port, int on); static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static void cypress_send(struct usb_serial_port *port); @@ -215,9 +215,10 @@ static struct usb_serial_driver cypress_earthmate_device = { .id_table = id_table_earthmate, .num_ports = 1, .attach = cypress_earthmate_startup, - .shutdown = cypress_shutdown, + .release = cypress_release, .open = cypress_open, .close = cypress_close, + .dtr_rts = cypress_dtr_rts, .write = cypress_write, .write_room = cypress_write_room, .ioctl = cypress_ioctl, @@ -241,9 +242,10 @@ static struct usb_serial_driver cypress_hidcom_device = { .id_table = id_table_cyphidcomrs232, .num_ports = 1, .attach = cypress_hidcom_startup, - .shutdown = cypress_shutdown, + .release = cypress_release, .open = cypress_open, .close = cypress_close, + .dtr_rts = cypress_dtr_rts, .write = cypress_write, .write_room = cypress_write_room, .ioctl = cypress_ioctl, @@ -267,9 +269,10 @@ static struct usb_serial_driver cypress_ca42v2_device = { .id_table = id_table_nokiaca42v2, .num_ports = 1, .attach = cypress_ca42v2_startup, - .shutdown = cypress_shutdown, + .release = cypress_release, .open = cypress_open, .close = cypress_close, + .dtr_rts = cypress_dtr_rts, .write = cypress_write, .write_room = cypress_write_room, .ioctl = cypress_ioctl, @@ -613,7 +616,7 @@ static int cypress_ca42v2_startup(struct usb_serial *serial) } /* cypress_ca42v2_startup */ -static void cypress_shutdown(struct usb_serial *serial) +static void cypress_release(struct usb_serial *serial) { struct cypress_private *priv; @@ -626,7 +629,6 @@ static void cypress_shutdown(struct usb_serial *serial) if (priv) { cypress_buf_free(priv->buf); kfree(priv); - usb_set_serial_port_data(serial->port[0], NULL); } } @@ -656,11 +658,7 @@ static int cypress_open(struct tty_struct *tty, priv->rx_flags = 0; spin_unlock_irqrestore(&priv->lock, flags); - /* raise both lines and set termios */ - spin_lock_irqsave(&priv->lock, flags); - priv->line_control = CONTROL_DTR | CONTROL_RTS; - priv->cmd_ctrl = 1; - spin_unlock_irqrestore(&priv->lock, flags); + /* Set termios */ result = cypress_write(tty, port, NULL, 0); if (result) { @@ -694,76 +692,42 @@ static int cypress_open(struct tty_struct *tty, __func__, result); cypress_set_dead(port); } - + port->port.drain_delay = 256; return result; } /* cypress_open */ +static void cypress_dtr_rts(struct usb_serial_port *port, int on) +{ + struct cypress_private *priv = usb_get_serial_port_data(port); + /* drop dtr and rts */ + priv = usb_get_serial_port_data(port); + spin_lock_irq(&priv->lock); + if (on == 0) + priv->line_control = 0; + else + priv->line_control = CONTROL_DTR | CONTROL_RTS; + priv->cmd_ctrl = 1; + spin_unlock_irq(&priv->lock); + cypress_write(NULL, port, NULL, 0); +} -static void cypress_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void cypress_close(struct usb_serial_port *port) { struct cypress_private *priv = usb_get_serial_port_data(port); - unsigned int c_cflag; - int bps; - long timeout; - wait_queue_t wait; dbg("%s - port %d", __func__, port->number); - /* wait for data to drain from buffer */ - spin_lock_irq(&priv->lock); - timeout = CYPRESS_CLOSING_WAIT; - init_waitqueue_entry(&wait, current); - add_wait_queue(&tty->write_wait, &wait); - for (;;) { - set_current_state(TASK_INTERRUPTIBLE); - if (cypress_buf_data_avail(priv->buf) == 0 - || timeout == 0 || signal_pending(current) - /* without mutex, allowed due to harmless failure mode */ - || port->serial->disconnected) - break; - spin_unlock_irq(&priv->lock); - timeout = schedule_timeout(timeout); - spin_lock_irq(&priv->lock); - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&tty->write_wait, &wait); - /* clear out any remaining data in the buffer */ - cypress_buf_clear(priv->buf); - spin_unlock_irq(&priv->lock); - /* writing is potentially harmful, lock must be taken */ mutex_lock(&port->serial->disc_mutex); if (port->serial->disconnected) { mutex_unlock(&port->serial->disc_mutex); return; } - /* wait for characters to drain from device */ - if (tty) { - bps = tty_get_baud_rate(tty); - if (bps > 1200) - timeout = max((HZ * 2560) / bps, HZ / 10); - else - timeout = 2 * HZ; - schedule_timeout_interruptible(timeout); - } - + cypress_buf_clear(priv->buf); dbg("%s - stopping urbs", __func__); usb_kill_urb(port->interrupt_in_urb); usb_kill_urb(port->interrupt_out_urb); - if (tty) { - c_cflag = tty->termios->c_cflag; - if (c_cflag & HUPCL) { - /* drop dtr and rts */ - priv = usb_get_serial_port_data(port); - spin_lock_irq(&priv->lock); - priv->line_control = 0; - priv->cmd_ctrl = 1; - spin_unlock_irq(&priv->lock); - cypress_write(tty, port, NULL, 0); - } - } if (stats) dev_info(&port->dev, "Statistics: %d Bytes In | %d Bytes Out | %d Commands Issued\n", @@ -1264,8 +1228,8 @@ static void cypress_read_int_callback(struct urb *urb) /* precursor to disconnect so just go away */ return; case -EPIPE: - usb_clear_halt(port->serial->dev, 0x81); - break; + /* Can't call usb_clear_halt while in_interrupt */ + /* FALLS THROUGH */ default: /* something ugly is going on... */ dev_err(&urb->dev->dev, diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 38ba4ea8b6bf..f4808091c47c 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -422,7 +422,6 @@ struct digi_port { int dp_throttled; int dp_throttle_restart; wait_queue_head_t dp_flush_wait; - int dp_in_close; /* close in progress */ wait_queue_head_t dp_close_wait; /* wait queue for close */ struct work_struct dp_wakeup_work; struct usb_serial_port *dp_port; @@ -456,11 +455,13 @@ static int digi_write_room(struct tty_struct *tty); static int digi_chars_in_buffer(struct tty_struct *tty); static int digi_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void digi_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static void digi_close(struct usb_serial_port *port); +static int digi_carrier_raised(struct usb_serial_port *port); +static void digi_dtr_rts(struct usb_serial_port *port, int on); static int digi_startup_device(struct usb_serial *serial); static int digi_startup(struct usb_serial *serial); -static void digi_shutdown(struct usb_serial *serial); +static void digi_disconnect(struct usb_serial *serial); +static void digi_release(struct usb_serial *serial); static void digi_read_bulk_callback(struct urb *urb); static int digi_read_inb_callback(struct urb *urb); static int digi_read_oob_callback(struct urb *urb); @@ -510,6 +511,8 @@ static struct usb_serial_driver digi_acceleport_2_device = { .num_ports = 3, .open = digi_open, .close = digi_close, + .dtr_rts = digi_dtr_rts, + .carrier_raised = digi_carrier_raised, .write = digi_write, .write_room = digi_write_room, .write_bulk_callback = digi_write_bulk_callback, @@ -522,7 +525,8 @@ static struct usb_serial_driver digi_acceleport_2_device = { .tiocmget = digi_tiocmget, .tiocmset = digi_tiocmset, .attach = digi_startup, - .shutdown = digi_shutdown, + .disconnect = digi_disconnect, + .release = digi_release, }; static struct usb_serial_driver digi_acceleport_4_device = { @@ -548,7 +552,8 @@ static struct usb_serial_driver digi_acceleport_4_device = { .tiocmget = digi_tiocmget, .tiocmset = digi_tiocmset, .attach = digi_startup, - .shutdown = digi_shutdown, + .disconnect = digi_disconnect, + .release = digi_release, }; @@ -1328,6 +1333,19 @@ static int digi_chars_in_buffer(struct tty_struct *tty) } +static void digi_dtr_rts(struct usb_serial_port *port, int on) +{ + /* Adjust DTR and RTS */ + digi_set_modem_signals(port, on * (TIOCM_DTR|TIOCM_RTS), 1); +} + +static int digi_carrier_raised(struct usb_serial_port *port) +{ + struct digi_port *priv = usb_get_serial_port_data(port); + if (priv->dp_modem_signals & TIOCM_CD) + return 1; + return 0; +} static int digi_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp) @@ -1336,7 +1354,6 @@ static int digi_open(struct tty_struct *tty, struct usb_serial_port *port, unsigned char buf[32]; struct digi_port *priv = usb_get_serial_port_data(port); struct ktermios not_termios; - unsigned long flags = 0; dbg("digi_open: TOP: port=%d, open_count=%d", priv->dp_port_num, port->port.count); @@ -1345,26 +1362,6 @@ static int digi_open(struct tty_struct *tty, struct usb_serial_port *port, if (digi_startup_device(port->serial) != 0) return -ENXIO; - spin_lock_irqsave(&priv->dp_port_lock, flags); - - /* don't wait on a close in progress for non-blocking opens */ - if (priv->dp_in_close && (filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) { - spin_unlock_irqrestore(&priv->dp_port_lock, flags); - return -EAGAIN; - } - - /* wait for a close in progress to finish */ - while (priv->dp_in_close) { - cond_wait_interruptible_timeout_irqrestore( - &priv->dp_close_wait, DIGI_RETRY_TIMEOUT, - &priv->dp_port_lock, flags); - if (signal_pending(current)) - return -EINTR; - spin_lock_irqsave(&priv->dp_port_lock, flags); - } - - spin_unlock_irqrestore(&priv->dp_port_lock, flags); - /* read modem signals automatically whenever they change */ buf[0] = DIGI_CMD_READ_INPUT_SIGNALS; buf[1] = priv->dp_port_num; @@ -1387,16 +1384,11 @@ static int digi_open(struct tty_struct *tty, struct usb_serial_port *port, not_termios.c_iflag = ~tty->termios->c_iflag; digi_set_termios(tty, port, ¬_termios); } - - /* set DTR and RTS */ - digi_set_modem_signals(port, TIOCM_DTR|TIOCM_RTS, 1); - return 0; } -static void digi_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static void digi_close(struct usb_serial_port *port) { DEFINE_WAIT(wait); int ret; @@ -1411,28 +1403,9 @@ static void digi_close(struct tty_struct *tty, struct usb_serial_port *port, if (port->serial->disconnected) goto exit; - /* do cleanup only after final close on this port */ - spin_lock_irq(&priv->dp_port_lock); - priv->dp_in_close = 1; - spin_unlock_irq(&priv->dp_port_lock); - - /* tell line discipline to process only XON/XOFF */ - tty->closing = 1; - - /* wait for output to drain */ - if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) - tty_wait_until_sent(tty, DIGI_CLOSE_TIMEOUT); - - /* flush driver and line discipline buffers */ - tty_driver_flush_buffer(tty); - tty_ldisc_flush(tty); - if (port->serial->dev) { - /* wait for transmit idle */ - if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) - digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT); - /* drop DTR and RTS */ - digi_set_modem_signals(port, 0, 0); + /* FIXME: Transmit idle belongs in the wait_unti_sent path */ + digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT); /* disable input flow control */ buf[0] = DIGI_CMD_SET_INPUT_FLOW_CONTROL; @@ -1477,11 +1450,9 @@ static void digi_close(struct tty_struct *tty, struct usb_serial_port *port, /* shutdown any outstanding bulk writes */ usb_kill_urb(port->write_urb); } - tty->closing = 0; exit: spin_lock_irq(&priv->dp_port_lock); priv->dp_write_urb_in_use = 0; - priv->dp_in_close = 0; wake_up_interruptible(&priv->dp_close_wait); spin_unlock_irq(&priv->dp_port_lock); mutex_unlock(&port->serial->disc_mutex); @@ -1560,7 +1531,6 @@ static int digi_startup(struct usb_serial *serial) priv->dp_throttled = 0; priv->dp_throttle_restart = 0; init_waitqueue_head(&priv->dp_flush_wait); - priv->dp_in_close = 0; init_waitqueue_head(&priv->dp_close_wait); INIT_WORK(&priv->dp_wakeup_work, digi_wakeup_write_lock); priv->dp_port = serial->port[i]; @@ -1589,16 +1559,23 @@ static int digi_startup(struct usb_serial *serial) } -static void digi_shutdown(struct usb_serial *serial) +static void digi_disconnect(struct usb_serial *serial) { int i; - dbg("digi_shutdown: TOP, in_interrupt()=%ld", in_interrupt()); + dbg("digi_disconnect: TOP, in_interrupt()=%ld", in_interrupt()); /* stop reads and writes on all ports */ for (i = 0; i < serial->type->num_ports + 1; i++) { usb_kill_urb(serial->port[i]->read_urb); usb_kill_urb(serial->port[i]->write_urb); } +} + + +static void digi_release(struct usb_serial *serial) +{ + int i; + dbg("digi_release: TOP, in_interrupt()=%ld", in_interrupt()); /* free the private data structures for all ports */ /* number of regular ports + 1 for the out-of-band port */ diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c index c709ec474a80..80cb3471adbe 100644 --- a/drivers/usb/serial/empeg.c +++ b/drivers/usb/serial/empeg.c @@ -81,8 +81,7 @@ static int debug; /* function prototypes for an empeg-car player */ static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static void empeg_close(struct usb_serial_port *port); static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -91,7 +90,6 @@ static int empeg_chars_in_buffer(struct tty_struct *tty); static void empeg_throttle(struct tty_struct *tty); static void empeg_unthrottle(struct tty_struct *tty); static int empeg_startup(struct usb_serial *serial); -static void empeg_shutdown(struct usb_serial *serial); static void empeg_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); static void empeg_write_bulk_callback(struct urb *urb); @@ -125,7 +123,6 @@ static struct usb_serial_driver empeg_device = { .throttle = empeg_throttle, .unthrottle = empeg_unthrottle, .attach = empeg_startup, - .shutdown = empeg_shutdown, .set_termios = empeg_set_termios, .write = empeg_write, .write_room = empeg_write_room, @@ -181,8 +178,7 @@ static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, } -static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static void empeg_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); @@ -429,12 +425,6 @@ static int empeg_startup(struct usb_serial *serial) } -static void empeg_shutdown(struct usb_serial *serial) -{ - dbg("%s", __func__); -} - - static void empeg_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index d9fcdaedf389..60c64cc5be2a 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -33,6 +33,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/tty.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> @@ -47,7 +48,7 @@ /* * Version Information */ -#define DRIVER_VERSION "v1.4.3" +#define DRIVER_VERSION "v1.5.0" #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>" #define DRIVER_DESC "USB FTDI Serial Converters Driver" @@ -82,17 +83,20 @@ struct ftdi_private { int rx_processed; unsigned long rx_bytes; - __u16 interface; /* FT2232C port interface (0 for FT232/245) */ + __u16 interface; /* FT2232C, FT2232H or FT4232H port interface + (0 for FT232/245) */ speed_t force_baud; /* if non-zero, force the baud rate to this value */ int force_rtscts; /* if non-zero, force RTS-CTS to always be enabled */ + unsigned int latency; /* latency setting in use */ spinlock_t tx_lock; /* spinlock for transmit state */ unsigned long tx_bytes; unsigned long tx_outstanding_bytes; unsigned long tx_outstanding_urbs; + unsigned short max_packet_size; }; /* struct ftdi_sio_quirk is used by devices requiring special attention. */ @@ -104,6 +108,7 @@ struct ftdi_sio_quirk { static int ftdi_jtag_probe(struct usb_serial *serial); static int ftdi_mtxorb_hack_setup(struct usb_serial *serial); +static int ftdi_NDI_device_setup(struct usb_serial *serial); static void ftdi_USB_UIRT_setup(struct ftdi_private *priv); static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv); @@ -115,6 +120,10 @@ static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = { .probe = ftdi_mtxorb_hack_setup, }; +static struct ftdi_sio_quirk ftdi_NDI_device_quirk = { + .probe = ftdi_NDI_device_setup, +}; + static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = { .port_probe = ftdi_USB_UIRT_setup, }; @@ -163,6 +172,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) }, { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) }, { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) }, { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) }, @@ -187,6 +197,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) }, { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) }, { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) }, { USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) }, @@ -575,6 +586,9 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) }, { USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) }, { USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) }, { USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) }, @@ -640,6 +654,16 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) }, { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) }, { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) }, { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) }, @@ -656,6 +680,8 @@ static struct usb_device_id id_table_combined [] = { .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID), + .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) }, { USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) }, { USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) }, @@ -663,7 +689,6 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) }, { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) }, { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) }, - { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID) }, { USB_DEVICE(ATMEL_VID, STK541_PID) }, { USB_DEVICE(DE_VID, STB_PID) }, { USB_DEVICE(DE_VID, WHT_PID) }, @@ -672,6 +697,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) }, { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, + { USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) }, { }, /* Optional parameter entry */ { } /* Terminating entry */ }; @@ -692,12 +718,13 @@ static const char *ftdi_chip_name[] = { [FT232BM] = "FT232BM", [FT2232C] = "FT2232C", [FT232RL] = "FT232RL", + [FT2232H] = "FT2232H", + [FT4232H] = "FT4232H" }; /* Constants for read urb and write urb */ #define BUFSZ 512 -#define PKTSZ 64 /* rx_flags */ #define THROTTLED 0x01 @@ -714,13 +741,12 @@ static const char *ftdi_chip_name[] = { /* function prototypes for a FTDI serial converter */ static int ftdi_sio_probe(struct usb_serial *serial, const struct usb_device_id *id); -static void ftdi_shutdown(struct usb_serial *serial); static int ftdi_sio_port_probe(struct usb_serial_port *port); static int ftdi_sio_port_remove(struct usb_serial_port *port); static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void ftdi_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void ftdi_close(struct usb_serial_port *port); +static void ftdi_dtr_rts(struct usb_serial_port *port, int on); static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int ftdi_write_room(struct tty_struct *tty); @@ -743,6 +769,8 @@ static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base); static unsigned short int ftdi_232am_baud_to_divisor(int baud); static __u32 ftdi_232bm_baud_base_to_divisor(int baud, int base); static __u32 ftdi_232bm_baud_to_divisor(int baud); +static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base); +static __u32 ftdi_2232h_baud_to_divisor(int baud); static struct usb_serial_driver ftdi_sio_device = { .driver = { @@ -758,6 +786,7 @@ static struct usb_serial_driver ftdi_sio_device = { .port_remove = ftdi_sio_port_remove, .open = ftdi_open, .close = ftdi_close, + .dtr_rts = ftdi_dtr_rts, .throttle = ftdi_throttle, .unthrottle = ftdi_unthrottle, .write = ftdi_write, @@ -770,7 +799,6 @@ static struct usb_serial_driver ftdi_sio_device = { .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, - .shutdown = ftdi_shutdown, }; @@ -836,6 +864,36 @@ static __u32 ftdi_232bm_baud_to_divisor(int baud) return ftdi_232bm_baud_base_to_divisor(baud, 48000000); } +static __u32 ftdi_2232h_baud_base_to_divisor(int baud, int base) +{ + static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 }; + __u32 divisor; + int divisor3; + + /* hi-speed baud rate is 10-bit sampling instead of 16-bit */ + divisor3 = (base / 10 / baud) * 8; + + divisor = divisor3 >> 3; + divisor |= (__u32)divfrac[divisor3 & 0x7] << 14; + /* Deal with special cases for highest baud rates. */ + if (divisor == 1) + divisor = 0; + else if (divisor == 0x4001) + divisor = 1; + /* + * Set this bit to turn off a divide by 2.5 on baud rate generator + * This enables baud rates up to 12Mbaud but cannot reach below 1200 + * baud with this bit set + */ + divisor |= 0x00020000; + return divisor; +} + +static __u32 ftdi_2232h_baud_to_divisor(int baud) +{ + return ftdi_2232h_baud_base_to_divisor(baud, 120000000); +} + #define set_mctrl(port, set) update_mctrl((port), (set), 0) #define clear_mctrl(port, clear) update_mctrl((port), 0, (clear)) @@ -986,6 +1044,29 @@ static __u32 get_ftdi_divisor(struct tty_struct *tty, case FT2232C: /* FT2232C chip */ case FT232RL: if (baud <= 3000000) { + __u16 product_id = le16_to_cpu( + port->serial->dev->descriptor.idProduct); + if (((FTDI_NDI_HUC_PID == product_id) || + (FTDI_NDI_SPECTRA_SCU_PID == product_id) || + (FTDI_NDI_FUTURE_2_PID == product_id) || + (FTDI_NDI_FUTURE_3_PID == product_id) || + (FTDI_NDI_AURORA_SCU_PID == product_id)) && + (baud == 19200)) { + baud = 1200000; + } + div_value = ftdi_232bm_baud_to_divisor(baud); + } else { + dbg("%s - Baud rate too high!", __func__); + div_value = ftdi_232bm_baud_to_divisor(9600); + div_okay = 0; + baud = 9600; + } + break; + case FT2232H: /* FT2232H chip */ + case FT4232H: /* FT4232H chip */ + if ((baud <= 12000000) & (baud >= 1200)) { + div_value = ftdi_2232h_baud_to_divisor(baud); + } else if (baud < 1200) { div_value = ftdi_232bm_baud_to_divisor(baud); } else { dbg("%s - Baud rate too high!", __func__); @@ -1037,7 +1118,54 @@ static int change_speed(struct tty_struct *tty, struct usb_serial_port *port) return rv; } +static int write_latency_timer(struct usb_serial_port *port) +{ + struct ftdi_private *priv = usb_get_serial_port_data(port); + struct usb_device *udev = port->serial->dev; + char buf[1]; + int rv = 0; + int l = priv->latency; + + if (priv->flags & ASYNC_LOW_LATENCY) + l = 1; + + dbg("%s: setting latency timer = %i", __func__, l); + + rv = usb_control_msg(udev, + usb_sndctrlpipe(udev, 0), + FTDI_SIO_SET_LATENCY_TIMER_REQUEST, + FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, + l, priv->interface, + buf, 0, WDR_TIMEOUT); + + if (rv < 0) + dev_err(&port->dev, "Unable to write latency timer: %i\n", rv); + return rv; +} + +static int read_latency_timer(struct usb_serial_port *port) +{ + struct ftdi_private *priv = usb_get_serial_port_data(port); + struct usb_device *udev = port->serial->dev; + unsigned short latency = 0; + int rv = 0; + + + dbg("%s", __func__); + rv = usb_control_msg(udev, + usb_rcvctrlpipe(udev, 0), + FTDI_SIO_GET_LATENCY_TIMER_REQUEST, + FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE, + 0, priv->interface, + (char *) &latency, 1, WDR_TIMEOUT); + + if (rv < 0) { + dev_err(&port->dev, "Unable to read latency timer: %i\n", rv); + return -EIO; + } + return latency; +} static int get_serial_info(struct usb_serial_port *port, struct serial_struct __user *retinfo) @@ -1097,6 +1225,7 @@ static int set_serial_info(struct tty_struct *tty, priv->custom_divisor = new_serial.custom_divisor; tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; + write_latency_timer(port); check_and_exit: if ((old_priv.flags & ASYNC_SPD_MASK) != @@ -1146,14 +1275,29 @@ static void ftdi_determine_type(struct usb_serial_port *port) if (interfaces > 1) { int inter; - /* Multiple interfaces. Assume FT2232C. */ - priv->chip_type = FT2232C; + /* Multiple interfaces.*/ + if (version == 0x0800) { + priv->chip_type = FT4232H; + /* Hi-speed - baud clock runs at 120MHz */ + priv->baud_base = 120000000 / 2; + } else if (version == 0x0700) { + priv->chip_type = FT2232H; + /* Hi-speed - baud clock runs at 120MHz */ + priv->baud_base = 120000000 / 2; + } else + priv->chip_type = FT2232C; + /* Determine interface code. */ inter = serial->interface->altsetting->desc.bInterfaceNumber; - if (inter == 0) - priv->interface = PIT_SIOA; - else - priv->interface = PIT_SIOB; + if (inter == 0) { + priv->interface = INTERFACE_A; + } else if (inter == 1) { + priv->interface = INTERFACE_B; + } else if (inter == 2) { + priv->interface = INTERFACE_C; + } else if (inter == 3) { + priv->interface = INTERFACE_D; + } /* BM-type devices have a bug where bcdDevice gets set * to 0x200 when iSerialNumber is 0. */ if (version < 0x500) { @@ -1181,6 +1325,45 @@ static void ftdi_determine_type(struct usb_serial_port *port) } +/* Determine the maximum packet size for the device. This depends on the chip + * type and the USB host capabilities. The value should be obtained from the + * device descriptor as the chip will use the appropriate values for the host.*/ +static void ftdi_set_max_packet_size(struct usb_serial_port *port) +{ + struct ftdi_private *priv = usb_get_serial_port_data(port); + struct usb_serial *serial = port->serial; + struct usb_device *udev = serial->dev; + + struct usb_interface *interface = serial->interface; + struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc; + + unsigned num_endpoints; + int i = 0; + + num_endpoints = interface->cur_altsetting->desc.bNumEndpoints; + dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints); + + /* NOTE: some customers have programmed FT232R/FT245R devices + * with an endpoint size of 0 - not good. In this case, we + * want to override the endpoint descriptor setting and use a + * value of 64 for wMaxPacketSize */ + for (i = 0; i < num_endpoints; i++) { + dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1, + interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize); + ep_desc = &interface->cur_altsetting->endpoint[i].desc; + if (ep_desc->wMaxPacketSize == 0) { + ep_desc->wMaxPacketSize = cpu_to_le16(0x40); + dev_info(&udev->dev, "Overriding wMaxPacketSize on endpoint %d\n", i); + } + } + + /* set max packet size based on descriptor */ + priv->max_packet_size = ep_desc->wMaxPacketSize; + + dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size); +} + + /* * *************************************************************************** * Sysfs Attribute @@ -1192,27 +1375,13 @@ static ssize_t show_latency_timer(struct device *dev, { struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); - struct usb_device *udev = port->serial->dev; - unsigned short latency = 0; - int rv = 0; - - - dbg("%s", __func__); - - rv = usb_control_msg(udev, - usb_rcvctrlpipe(udev, 0), - FTDI_SIO_GET_LATENCY_TIMER_REQUEST, - FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE, - 0, priv->interface, - (char *) &latency, 1, WDR_TIMEOUT); - - if (rv < 0) { - dev_err(dev, "Unable to read latency timer: %i\n", rv); - return -EIO; - } - return sprintf(buf, "%i\n", latency); + if (priv->flags & ASYNC_LOW_LATENCY) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "%i\n", priv->latency); } + /* Write a new value of the latency timer, in units of milliseconds. */ static ssize_t store_latency_timer(struct device *dev, struct device_attribute *attr, const char *valbuf, @@ -1220,25 +1389,13 @@ static ssize_t store_latency_timer(struct device *dev, { struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); - struct usb_device *udev = port->serial->dev; - char buf[1]; int v = simple_strtoul(valbuf, NULL, 10); int rv = 0; - dbg("%s: setting latency timer = %i", __func__, v); - - rv = usb_control_msg(udev, - usb_sndctrlpipe(udev, 0), - FTDI_SIO_SET_LATENCY_TIMER_REQUEST, - FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, - v, priv->interface, - buf, 0, WDR_TIMEOUT); - - if (rv < 0) { - dev_err(dev, "Unable to write latency timer: %i\n", rv); + priv->latency = v; + rv = write_latency_timer(port); + if (rv < 0) return -EIO; - } - return count; } @@ -1290,7 +1447,9 @@ static int create_sysfs_attrs(struct usb_serial_port *port) if ((!retval) && (priv->chip_type == FT232BM || priv->chip_type == FT2232C || - priv->chip_type == FT232RL)) { + priv->chip_type == FT232RL || + priv->chip_type == FT2232H || + priv->chip_type == FT4232H)) { retval = device_create_file(&port->dev, &dev_attr_latency_timer); } @@ -1309,7 +1468,9 @@ static void remove_sysfs_attrs(struct usb_serial_port *port) device_remove_file(&port->dev, &dev_attr_event_char); if (priv->chip_type == FT232BM || priv->chip_type == FT2232C || - priv->chip_type == FT232RL) { + priv->chip_type == FT232RL || + priv->chip_type == FT2232H || + priv->chip_type == FT4232H) { device_remove_file(&port->dev, &dev_attr_latency_timer); } } @@ -1392,6 +1553,8 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port) usb_set_serial_port_data(port, priv); ftdi_determine_type(port); + ftdi_set_max_packet_size(port); + read_latency_timer(port); create_sysfs_attrs(port); return 0; } @@ -1422,6 +1585,39 @@ static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv) } /* ftdi_HE_TIRA1_setup */ /* + * Module parameter to control latency timer for NDI FTDI-based USB devices. + * If this value is not set in modprobe.conf.local its value will be set to 1ms. + */ +static int ndi_latency_timer = 1; + +/* Setup for the NDI FTDI-based USB devices, which requires hardwired + * baudrate (19200 gets mapped to 1200000). + * + * Called from usbserial:serial_probe. + */ +static int ftdi_NDI_device_setup(struct usb_serial *serial) +{ + struct usb_device *udev = serial->dev; + int latency = ndi_latency_timer; + int rv = 0; + char buf[1]; + + if (latency == 0) + latency = 1; + if (latency > 99) + latency = 99; + + dbg("%s setting NDI device latency to %d", __func__, latency); + dev_info(&udev->dev, "NDI device with a latency value of %d", latency); + + rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + FTDI_SIO_SET_LATENCY_TIMER_REQUEST, + FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, + latency, 0, buf, 0, WDR_TIMEOUT); + return 0; +} + +/* * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from * userspace using openocd. @@ -1460,18 +1656,6 @@ static int ftdi_mtxorb_hack_setup(struct usb_serial *serial) return 0; } -/* ftdi_shutdown is called from usbserial:usb_serial_disconnect - * it is called when the usb device is disconnected - * - * usbserial:usb_serial_disconnect - * calls __serial_close for each open of the port - * shutdown is called then (ie ftdi_shutdown) - */ -static void ftdi_shutdown(struct usb_serial *serial) -{ - dbg("%s", __func__); -} - static void ftdi_sio_priv_release(struct kref *k) { struct ftdi_private *priv = container_of(k, struct ftdi_private, kref); @@ -1514,6 +1698,8 @@ static int ftdi_open(struct tty_struct *tty, if (tty) tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0; + write_latency_timer(port); + /* No error checking for this (will get errors later anyway) */ /* See ftdi_sio.h for description of what is reset */ usb_control_msg(dev, usb_sndctrlpipe(dev, 0), @@ -1529,11 +1715,6 @@ static int ftdi_open(struct tty_struct *tty, if (tty) ftdi_set_termios(tty, port, tty->termios); - /* FIXME: Flow control might be enabled, so it should be checked - - we have no control of defaults! */ - /* Turn on RTS and DTR since we are not flow controlling by default */ - set_mctrl(port, TIOCM_DTR | TIOCM_RTS); - /* Not throttled */ spin_lock_irqsave(&priv->rx_lock, flags); priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); @@ -1558,6 +1739,30 @@ static int ftdi_open(struct tty_struct *tty, } /* ftdi_open */ +static void ftdi_dtr_rts(struct usb_serial_port *port, int on) +{ + struct ftdi_private *priv = usb_get_serial_port_data(port); + char buf[1]; + + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) { + /* Disable flow control */ + if (!on && usb_control_msg(port->serial->dev, + usb_sndctrlpipe(port->serial->dev, 0), + FTDI_SIO_SET_FLOW_CTRL_REQUEST, + FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, + 0, priv->interface, buf, 0, + WDR_TIMEOUT) < 0) { + dev_err(&port->dev, "error from flowcontrol urb\n"); + } + /* drop RTS and DTR */ + if (on) + set_mctrl(port, TIOCM_DTR | TIOCM_RTS); + else + clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); + } + mutex_unlock(&port->serial->disc_mutex); +} /* * usbserial:__serial_close only calls ftdi_close if the point is open @@ -1567,31 +1772,12 @@ static int ftdi_open(struct tty_struct *tty, * */ -static void ftdi_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void ftdi_close(struct usb_serial_port *port) { /* ftdi_close */ - unsigned int c_cflag = tty->termios->c_cflag; struct ftdi_private *priv = usb_get_serial_port_data(port); - char buf[1]; dbg("%s", __func__); - mutex_lock(&port->serial->disc_mutex); - if (c_cflag & HUPCL && !port->serial->disconnected) { - /* Disable flow control */ - if (usb_control_msg(port->serial->dev, - usb_sndctrlpipe(port->serial->dev, 0), - FTDI_SIO_SET_FLOW_CTRL_REQUEST, - FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, - 0, priv->interface, buf, 0, - WDR_TIMEOUT) < 0) { - dev_err(&port->dev, "error from flowcontrol urb\n"); - } - - /* drop RTS and DTR */ - clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); - } /* Note change no line if hupcl is off */ - mutex_unlock(&port->serial->disc_mutex); /* cancel any scheduled reading */ cancel_delayed_work_sync(&priv->rx_work); @@ -1644,8 +1830,8 @@ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, if (data_offset > 0) { /* Original sio needs control bytes too... */ transfer_size += (data_offset * - ((count + (PKTSZ - 1 - data_offset)) / - (PKTSZ - data_offset))); + ((count + (priv->max_packet_size - 1 - data_offset)) / + (priv->max_packet_size - data_offset))); } buffer = kmalloc(transfer_size, GFP_ATOMIC); @@ -1667,7 +1853,7 @@ static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, if (data_offset > 0) { /* Original sio requires control byte at start of each packet. */ - int user_pktsz = PKTSZ - data_offset; + int user_pktsz = priv->max_packet_size - data_offset; int todo = count; unsigned char *first_byte = buffer; const unsigned char *current_position = buf; @@ -1748,11 +1934,6 @@ static void ftdi_write_bulk_callback(struct urb *urb) dbg("%s - port %d", __func__, port->number); - if (status) { - dbg("nonzero write bulk status received: %d", status); - return; - } - priv = usb_get_serial_port_data(port); if (!priv) { dbg("%s - bad port private data pointer - exiting", __func__); @@ -1763,13 +1944,18 @@ static void ftdi_write_bulk_callback(struct urb *urb) data_offset = priv->write_offset; if (data_offset > 0) { /* Subtract the control bytes */ - countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ)); + countback -= (data_offset * DIV_ROUND_UP(countback, priv->max_packet_size)); } spin_lock_irqsave(&priv->tx_lock, flags); --priv->tx_outstanding_urbs; priv->tx_outstanding_bytes -= countback; spin_unlock_irqrestore(&priv->tx_lock, flags); + if (status) { + dbg("nonzero write bulk status received: %d", status); + return; + } + usb_serial_port_softint(port); } /* ftdi_write_bulk_callback */ @@ -1865,7 +2051,7 @@ static void ftdi_read_bulk_callback(struct urb *urb) /* count data bytes, but not status bytes */ countread = urb->actual_length; - countread -= 2 * DIV_ROUND_UP(countread, PKTSZ); + countread -= 2 * DIV_ROUND_UP(countread, priv->max_packet_size); spin_lock_irqsave(&priv->rx_lock, flags); priv->rx_bytes += countread; spin_unlock_irqrestore(&priv->rx_lock, flags); @@ -1938,7 +2124,7 @@ static void ftdi_process_read(struct work_struct *work) need_flip = 0; for (packet_offset = priv->rx_processed; - packet_offset < urb->actual_length; packet_offset += PKTSZ) { + packet_offset < urb->actual_length; packet_offset += priv->max_packet_size) { int length; /* Compare new line status to the old one, signal if different/ @@ -1953,7 +2139,7 @@ static void ftdi_process_read(struct work_struct *work) priv->prev_status = new_status; } - length = min_t(u32, PKTSZ, urb->actual_length-packet_offset)-2; + length = min_t(u32, priv->max_packet_size, urb->actual_length-packet_offset)-2; if (length < 0) { dev_err(&port->dev, "%s - bad packet length: %d\n", __func__, length+2); @@ -1984,6 +2170,7 @@ static void ftdi_process_read(struct work_struct *work) if (data[packet_offset+1] & FTDI_RS_BI) { error_flag = TTY_BREAK; dbg("BREAK received"); + usb_serial_handle_break(port); } if (data[packet_offset+1] & FTDI_RS_PE) { error_flag = TTY_PARITY; @@ -1998,8 +2185,11 @@ static void ftdi_process_read(struct work_struct *work) /* Note that the error flag is duplicated for every character received since we don't know which character it applied to */ - tty_insert_flip_char(tty, - data[packet_offset + i], error_flag); + if (!usb_serial_handle_sysrq_char(tty, port, + data[packet_offset + i])) + tty_insert_flip_char(tty, + data[packet_offset + i], + error_flag); } need_flip = 1; } @@ -2305,6 +2495,8 @@ static int ftdi_tiocmget(struct tty_struct *tty, struct file *file) case FT232BM: case FT2232C: case FT232RL: + case FT2232H: + case FT4232H: /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same format as the data returned from the in point */ @@ -2494,3 +2686,5 @@ MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" module_param(product, ushort, 0); MODULE_PARM_DESC(product, "User specified product ID"); +module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override"); diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h index 12330fa1c095..c9fbd7415092 100644 --- a/drivers/usb/serial/ftdi_sio.h +++ b/drivers/usb/serial/ftdi_sio.h @@ -10,7 +10,7 @@ * The device is based on the FTDI FT8U100AX chip. It has a DB25 on one side, * USB on the other. * - * Thanx to FTDI (http://www.ftdi.co.uk) for so kindly providing details + * Thanx to FTDI (http://www.ftdichip.com) for so kindly providing details * of the protocol required to talk to the device and ongoing assistence * during development. * @@ -28,11 +28,15 @@ #define FTDI_8U232AM_ALT_PID 0x6006 /* FTDI's alternate PID for above */ #define FTDI_8U2232C_PID 0x6010 /* Dual channel device */ #define FTDI_232RL_PID 0xFBFA /* Product ID for FT232RL */ +#define FTDI_4232H_PID 0x6011 /* Quad channel hi-speed device */ #define FTDI_RELAIS_PID 0xFA10 /* Relais device from Rudolf Gugler */ #define FTDI_NF_RIC_VID 0x0DCD /* Vendor Id */ #define FTDI_NF_RIC_PID 0x0001 /* Product Id */ #define FTDI_USBX_707_PID 0xF857 /* ADSTech IR Blaster USBX-707 */ +/* Larsen and Brusgaard AltiTrack/USBtrack */ +#define LARSENBRUSGAARD_VID 0x0FD8 +#define LB_ALTITRACK_PID 0x0001 /* www.canusb.com Lawicel CANUSB device */ #define FTDI_CANUSB_PID 0xFFA8 /* Product Id */ @@ -502,6 +506,7 @@ * * Armin Laeuger originally sent the PID for the UM 100 module. */ +#define FTDI_R2000KU_TRUE_RNG 0xFB80 /* R2000KU TRUE RNG */ #define FTDI_ELV_UR100_PID 0xFB58 /* USB-RS232-Umsetzer (UR 100) */ #define FTDI_ELV_UM100_PID 0xFB5A /* USB-Modul UM 100 */ #define FTDI_ELV_UO100_PID 0xFB5B /* USB-Modul UO 100 */ @@ -610,6 +615,9 @@ #define FTDI_CCSICDU20_0_PID 0xF9D0 #define FTDI_CCSICDU40_1_PID 0xF9D1 #define FTDI_CCSMACHX_2_PID 0xF9D2 +#define FTDI_CCSLOAD_N_GO_3_PID 0xF9D3 +#define FTDI_CCSICDU64_4_PID 0xF9D4 +#define FTDI_CCSPRIME8_5_PID 0xF9D5 /* Inside Accesso contactless reader (http://www.insidefr.com) */ #define INSIDE_ACCESSO 0xFAD0 @@ -732,6 +740,15 @@ #define FTDI_PYRAMID_PID 0xE6C8 /* Pyramid Appliance Display */ /* + * NDI (www.ndigital.com) product ids + */ +#define FTDI_NDI_HUC_PID 0xDA70 /* NDI Host USB Converter */ +#define FTDI_NDI_SPECTRA_SCU_PID 0xDA71 /* NDI Spectra SCU */ +#define FTDI_NDI_FUTURE_2_PID 0xDA72 /* NDI future device #2 */ +#define FTDI_NDI_FUTURE_3_PID 0xDA73 /* NDI future device #3 */ +#define FTDI_NDI_AURORA_SCU_PID 0xDA74 /* NDI Aurora SCU */ + +/* * Posiflex inc retail equipment (http://www.posiflex.com.tw) */ #define POSIFLEX_VID 0x0d3a /* Vendor ID */ @@ -844,9 +861,6 @@ #define TML_VID 0x1B91 /* Vendor ID */ #define TML_USB_SERIAL_PID 0x0064 /* USB - Serial Converter */ -/* NDI Polaris System */ -#define FTDI_NDI_HUC_PID 0xDA70 - /* Propox devices */ #define FTDI_PROPOX_JTAGCABLEII_PID 0xD738 @@ -873,6 +887,11 @@ #define FTDI_SIO_SET_LATENCY_TIMER 9 /* Set the latency timer */ #define FTDI_SIO_GET_LATENCY_TIMER 10 /* Get the latency timer */ +/* Interface indicies for FT2232, FT2232H and FT4232H devices*/ +#define INTERFACE_A 1 +#define INTERFACE_B 2 +#define INTERFACE_C 3 +#define INTERFACE_D 4 /* * FIC / OpenMoko, Inc. http://wiki.openmoko.org/wiki/Neo1973_Debug_Board_v3 @@ -925,6 +944,8 @@ #define MARVELL_VID 0x9e88 #define MARVELL_SHEEVAPLUG_PID 0x9e8f +#define FTDI_TURTELIZER_PID 0xBDC8 /* JTAG/RS-232 adapter by egnite GmBH */ + /* * BmRequestType: 1100 0000b * bRequest: FTDI_E2_READ @@ -1036,6 +1057,8 @@ typedef enum { FT232BM = 3, FT2232C = 4, FT232RL = 5, + FT2232H = 6, + FT4232H = 7 } ftdi_chip_type_t; typedef enum { diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index 586d30ff450b..8839f1c70b7f 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -1,7 +1,7 @@ /* * Garmin GPS driver * - * Copyright (C) 2006,2007 Hermann Kneissel herkne@users.sourceforge.net + * Copyright (C) 2006-2009 Hermann Kneissel herkne@users.sourceforge.net * * The latest version of the driver can be found at * http://sourceforge.net/projects/garmin-gps/ @@ -51,7 +51,7 @@ static int debug; */ #define VERSION_MAJOR 0 -#define VERSION_MINOR 31 +#define VERSION_MINOR 33 #define _STR(s) #s #define _DRIVER_VERSION(a, b) "v" _STR(a) "." _STR(b) @@ -129,7 +129,6 @@ struct garmin_data { __u8 state; __u16 flags; __u8 mode; - __u8 ignorePkts; __u8 count; __u8 pkt_id; __u32 serial_num; @@ -141,8 +140,6 @@ struct garmin_data { __u8 inbuffer [GPS_IN_BUFSIZ]; /* tty -> usb */ __u8 outbuffer[GPS_OUT_BUFSIZ]; /* usb -> tty */ __u8 privpkt[4*6]; - atomic_t req_count; - atomic_t resp_count; spinlock_t lock; struct list_head pktlist; }; @@ -170,6 +167,8 @@ struct garmin_data { #define FLAGS_BULK_IN_ACTIVE 0x0020 #define FLAGS_BULK_IN_RESTART 0x0010 #define FLAGS_THROTTLED 0x0008 +#define APP_REQ_SEEN 0x0004 +#define APP_RESP_SEEN 0x0002 #define CLEAR_HALT_REQUIRED 0x0001 #define FLAGS_QUEUING 0x0100 @@ -184,20 +183,16 @@ struct garmin_data { /* function prototypes */ -static void gsp_next_packet(struct garmin_data *garmin_data_p); -static int garmin_write_bulk(struct usb_serial_port *port, +static int gsp_next_packet(struct garmin_data *garmin_data_p); +static int garmin_write_bulk(struct usb_serial_port *port, const unsigned char *buf, int count, int dismiss_ack); /* some special packets to be send or received */ static unsigned char const GARMIN_START_SESSION_REQ[] = { 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0 }; -static unsigned char const GARMIN_START_SESSION_REQ2[] - = { 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0 }; static unsigned char const GARMIN_START_SESSION_REPLY[] = { 0, 0, 0, 0, 6, 0, 0, 0, 4, 0, 0, 0 }; -static unsigned char const GARMIN_SESSION_ACTIVE_REPLY[] - = { 0, 0, 0, 0, 17, 0, 0, 0, 4, 0, 0, 0, 0, 16, 0, 0 }; static unsigned char const GARMIN_BULK_IN_AVAIL_REPLY[] = { 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 }; static unsigned char const GARMIN_APP_LAYER_REPLY[] @@ -233,13 +228,6 @@ static struct usb_driver garmin_driver = { }; -static inline int noResponseFromAppLayer(struct garmin_data *garmin_data_p) -{ - return atomic_read(&garmin_data_p->req_count) == - atomic_read(&garmin_data_p->resp_count); -} - - static inline int getLayerId(const __u8 *usbPacket) { return __le32_to_cpup((__le32 *)(usbPacket)); @@ -325,8 +313,11 @@ static int pkt_add(struct garmin_data *garmin_data_p, state = garmin_data_p->state; spin_unlock_irqrestore(&garmin_data_p->lock, flags); + dbg("%s - added: pkt: %d - %d bytes", + __func__, pkt->seq, data_length); + /* in serial mode, if someone is waiting for data from - the device, iconvert and send the next packet to tty. */ + the device, convert and send the next packet to tty. */ if (result && (state == STATE_GSP_WAIT_DATA)) gsp_next_packet(garmin_data_p); } @@ -411,7 +402,7 @@ static int gsp_send_ack(struct garmin_data *garmin_data_p, __u8 pkt_id) /* * called for a complete packet received from tty layer * - * the complete packet (pkzid ... cksum) is in garmin_data_p->inbuf starting + * the complete packet (pktid ... cksum) is in garmin_data_p->inbuf starting * at GSP_INITIAL_OFFSET. * * count - number of bytes in the input buffer including space reserved for @@ -501,7 +492,6 @@ static int gsp_receive(struct garmin_data *garmin_data_p, unsigned long flags; int offs = 0; int ack_or_nak_seen = 0; - int i = 0; __u8 *dest; int size; /* dleSeen: set if last byte read was a DLE */ @@ -519,8 +509,8 @@ static int gsp_receive(struct garmin_data *garmin_data_p, skip = garmin_data_p->flags & FLAGS_GSP_SKIP; spin_unlock_irqrestore(&garmin_data_p->lock, flags); - dbg("%s - dle=%d skip=%d size=%d count=%d", - __func__, dleSeen, skip, size, count); + /* dbg("%s - dle=%d skip=%d size=%d count=%d", + __func__, dleSeen, skip, size, count); */ if (size == 0) size = GSP_INITIAL_OFFSET; @@ -568,7 +558,6 @@ static int gsp_receive(struct garmin_data *garmin_data_p, } else if (!skip) { if (dleSeen) { - dbg("non-masked DLE at %d - restarting", i); size = GSP_INITIAL_OFFSET; dleSeen = 0; } @@ -599,19 +588,19 @@ static int gsp_receive(struct garmin_data *garmin_data_p, else garmin_data_p->flags &= ~FLAGS_GSP_DLESEEN; - if (ack_or_nak_seen) - garmin_data_p->state = STATE_GSP_WAIT_DATA; - spin_unlock_irqrestore(&garmin_data_p->lock, flags); - if (ack_or_nak_seen) - gsp_next_packet(garmin_data_p); + if (ack_or_nak_seen) { + if (gsp_next_packet(garmin_data_p) > 0) + garmin_data_p->state = STATE_ACTIVE; + else + garmin_data_p->state = STATE_GSP_WAIT_DATA; + } return count; } - /* * Sends a usb packet to the tty * @@ -733,29 +722,28 @@ static int gsp_send(struct garmin_data *garmin_data_p, } - - - /* * Process the next pending data packet - if there is one */ -static void gsp_next_packet(struct garmin_data *garmin_data_p) +static int gsp_next_packet(struct garmin_data *garmin_data_p) { + int result = 0; struct garmin_packet *pkt = NULL; while ((pkt = pkt_pop(garmin_data_p)) != NULL) { dbg("%s - next pkt: %d", __func__, pkt->seq); - if (gsp_send(garmin_data_p, pkt->data, pkt->size) > 0) { + result = gsp_send(garmin_data_p, pkt->data, pkt->size); + if (result > 0) { kfree(pkt); - return; + return result; } kfree(pkt); } + return result; } - /****************************************************************************** * garmin native mode ******************************************************************************/ @@ -888,14 +876,6 @@ static int garmin_clear(struct garmin_data *garmin_data_p) unsigned long flags; int status = 0; - struct usb_serial_port *port = garmin_data_p->port; - - if (port != NULL && atomic_read(&garmin_data_p->resp_count)) { - /* send a terminate command */ - status = garmin_write_bulk(port, GARMIN_STOP_TRANSFER_REQ, - sizeof(GARMIN_STOP_TRANSFER_REQ), 1); - } - /* flush all queued data */ pkt_clear(garmin_data_p); @@ -908,16 +888,12 @@ static int garmin_clear(struct garmin_data *garmin_data_p) } - - - - static int garmin_init_session(struct usb_serial_port *port) { - unsigned long flags; struct usb_serial *serial = port->serial; struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); int status = 0; + int i = 0; if (status == 0) { usb_kill_urb(port->interrupt_in_urb); @@ -931,30 +907,25 @@ static int garmin_init_session(struct usb_serial_port *port) __func__, status); } + /* + * using the initialization method from gpsbabel. See comments in + * gpsbabel/jeeps/gpslibusb.c gusb_reset_toggles() + */ if (status == 0) { dbg("%s - starting session ...", __func__); garmin_data_p->state = STATE_ACTIVE; - status = garmin_write_bulk(port, GARMIN_START_SESSION_REQ, - sizeof(GARMIN_START_SESSION_REQ), 0); - if (status >= 0) { - - spin_lock_irqsave(&garmin_data_p->lock, flags); - garmin_data_p->ignorePkts++; - spin_unlock_irqrestore(&garmin_data_p->lock, flags); - - /* not needed, but the win32 driver does it too ... */ + for (i = 0; i < 3; i++) { status = garmin_write_bulk(port, - GARMIN_START_SESSION_REQ2, - sizeof(GARMIN_START_SESSION_REQ2), 0); - if (status >= 0) { - status = 0; - spin_lock_irqsave(&garmin_data_p->lock, flags); - garmin_data_p->ignorePkts++; - spin_unlock_irqrestore(&garmin_data_p->lock, - flags); - } + GARMIN_START_SESSION_REQ, + sizeof(GARMIN_START_SESSION_REQ), 0); + + if (status < 0) + break; } + + if (status > 0) + status = 0; } return status; @@ -962,8 +933,6 @@ static int garmin_init_session(struct usb_serial_port *port) - - static int garmin_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp) { @@ -977,8 +946,6 @@ static int garmin_open(struct tty_struct *tty, garmin_data_p->mode = initial_mode; garmin_data_p->count = 0; garmin_data_p->flags = 0; - atomic_set(&garmin_data_p->req_count, 0); - atomic_set(&garmin_data_p->resp_count, 0); spin_unlock_irqrestore(&garmin_data_p->lock, flags); /* shutdown any bulk reads that might be going on */ @@ -993,8 +960,7 @@ static int garmin_open(struct tty_struct *tty, } -static void garmin_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void garmin_close(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); @@ -1007,6 +973,7 @@ static void garmin_close(struct tty_struct *tty, return; mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) garmin_clear(garmin_data_p); @@ -1014,25 +981,17 @@ static void garmin_close(struct tty_struct *tty, usb_kill_urb(port->read_urb); usb_kill_urb(port->write_urb); - if (!port->serial->disconnected) { - if (noResponseFromAppLayer(garmin_data_p) || - ((garmin_data_p->flags & CLEAR_HALT_REQUIRED) != 0)) { - process_resetdev_request(port); - garmin_data_p->state = STATE_RESET; - } else { - garmin_data_p->state = STATE_DISCONNECTED; - } - } else { + /* keep reset state so we know that we must start a new session */ + if (garmin_data_p->state != STATE_RESET) garmin_data_p->state = STATE_DISCONNECTED; - } + mutex_unlock(&port->serial->disc_mutex); } + static void garmin_write_bulk_callback(struct urb *urb) { - unsigned long flags; struct usb_serial_port *port = urb->context; - int status = urb->status; if (port) { struct garmin_data *garmin_data_p = @@ -1040,20 +999,13 @@ static void garmin_write_bulk_callback(struct urb *urb) dbg("%s - port %d", __func__, port->number); - if (GARMIN_LAYERID_APPL == getLayerId(urb->transfer_buffer) - && (garmin_data_p->mode == MODE_GARMIN_SERIAL)) { - gsp_send_ack(garmin_data_p, - ((__u8 *)urb->transfer_buffer)[4]); - } + if (GARMIN_LAYERID_APPL == getLayerId(urb->transfer_buffer)) { - if (status) { - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - spin_lock_irqsave(&garmin_data_p->lock, flags); - garmin_data_p->flags |= CLEAR_HALT_REQUIRED; - spin_unlock_irqrestore(&garmin_data_p->lock, flags); + if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { + gsp_send_ack(garmin_data_p, + ((__u8 *)urb->transfer_buffer)[4]); + } } - usb_serial_port_softint(port); } @@ -1109,7 +1061,11 @@ static int garmin_write_bulk(struct usb_serial_port *port, urb->transfer_flags |= URB_ZERO_PACKET; if (GARMIN_LAYERID_APPL == getLayerId(buffer)) { - atomic_inc(&garmin_data_p->req_count); + + spin_lock_irqsave(&garmin_data_p->lock, flags); + garmin_data_p->flags |= APP_REQ_SEEN; + spin_unlock_irqrestore(&garmin_data_p->lock, flags); + if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { pkt_clear(garmin_data_p); garmin_data_p->state = STATE_GSP_WAIT_DATA; @@ -1141,6 +1097,9 @@ static int garmin_write(struct tty_struct *tty, struct usb_serial_port *port, usb_serial_debug_data(debug, &port->dev, __func__, count, buf); + if (garmin_data_p->state == STATE_RESET) + return -EIO; + /* check for our private packets */ if (count >= GARMIN_PKTHDR_LENGTH) { len = PRIVPKTSIZ; @@ -1185,7 +1144,7 @@ static int garmin_write(struct tty_struct *tty, struct usb_serial_port *port, break; case PRIV_PKTID_RESET_REQ: - atomic_inc(&garmin_data_p->req_count); + process_resetdev_request(port); break; case PRIV_PKTID_SET_DEF_MODE: @@ -1201,8 +1160,6 @@ static int garmin_write(struct tty_struct *tty, struct usb_serial_port *port, } } - garmin_data_p->ignorePkts = 0; - if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { return gsp_receive(garmin_data_p, buf, count); } else { /* MODE_NATIVE */ @@ -1225,31 +1182,33 @@ static int garmin_write_room(struct tty_struct *tty) static void garmin_read_process(struct garmin_data *garmin_data_p, unsigned char *data, unsigned data_length) { + unsigned long flags; + if (garmin_data_p->flags & FLAGS_DROP_DATA) { /* abort-transfer cmd is actice */ dbg("%s - pkt dropped", __func__); } else if (garmin_data_p->state != STATE_DISCONNECTED && garmin_data_p->state != STATE_RESET) { - /* remember any appl.layer packets, so we know - if a reset is required or not when closing - the device */ - if (0 == memcmp(data, GARMIN_APP_LAYER_REPLY, - sizeof(GARMIN_APP_LAYER_REPLY))) { - atomic_inc(&garmin_data_p->resp_count); - } - /* if throttling is active or postprecessing is required put the received data in the input queue, otherwise send it directly to the tty port */ if (garmin_data_p->flags & FLAGS_QUEUING) { pkt_add(garmin_data_p, data, data_length); - } else if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { - if (getLayerId(data) == GARMIN_LAYERID_APPL) + } else if (getLayerId(data) == GARMIN_LAYERID_APPL) { + + spin_lock_irqsave(&garmin_data_p->lock, flags); + garmin_data_p->flags |= APP_RESP_SEEN; + spin_unlock_irqrestore(&garmin_data_p->lock, flags); + + if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { pkt_add(garmin_data_p, data, data_length); - } else { - send_to_tty(garmin_data_p->port, data, data_length); + } else { + send_to_tty(garmin_data_p->port, data, + data_length); + } } + /* ignore system layer packets ... */ } } @@ -1364,8 +1323,6 @@ static void garmin_read_int_callback(struct urb *urb) } else { spin_lock_irqsave(&garmin_data_p->lock, flags); garmin_data_p->flags |= FLAGS_BULK_IN_ACTIVE; - /* do not send this packet to the user */ - garmin_data_p->ignorePkts = 1; spin_unlock_irqrestore(&garmin_data_p->lock, flags); } @@ -1392,17 +1349,7 @@ static void garmin_read_int_callback(struct urb *urb) __func__, garmin_data_p->serial_num); } - if (garmin_data_p->ignorePkts) { - /* this reply belongs to a request generated by the driver, - ignore it. */ - dbg("%s - pkt ignored (%d)", - __func__, garmin_data_p->ignorePkts); - spin_lock_irqsave(&garmin_data_p->lock, flags); - garmin_data_p->ignorePkts--; - spin_unlock_irqrestore(&garmin_data_p->lock, flags); - } else { - garmin_read_process(garmin_data_p, data, urb->actual_length); - } + garmin_read_process(garmin_data_p, data, urb->actual_length); port->interrupt_in_urb->dev = port->serial->dev; retval = usb_submit_urb(urb, GFP_ATOMIC); @@ -1528,7 +1475,7 @@ static int garmin_attach(struct usb_serial *serial) } -static void garmin_shutdown(struct usb_serial *serial) +static void garmin_disconnect(struct usb_serial *serial) { struct usb_serial_port *port = serial->port[0]; struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); @@ -1537,8 +1484,17 @@ static void garmin_shutdown(struct usb_serial *serial) usb_kill_urb(port->interrupt_in_urb); del_timer_sync(&garmin_data_p->timer); +} + + +static void garmin_release(struct usb_serial *serial) +{ + struct usb_serial_port *port = serial->port[0]; + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); + + dbg("%s", __func__); + kfree(garmin_data_p); - usb_set_serial_port_data(port, NULL); } @@ -1557,7 +1513,8 @@ static struct usb_serial_driver garmin_device = { .throttle = garmin_throttle, .unthrottle = garmin_unthrottle, .attach = garmin_attach, - .shutdown = garmin_shutdown, + .disconnect = garmin_disconnect, + .release = garmin_release, .write = garmin_write, .write_room = garmin_write_room, .write_bulk_callback = garmin_write_bulk_callback, diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 4cec9906ccf3..ce57f6a32bdf 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -63,7 +63,8 @@ struct usb_serial_driver usb_serial_generic_device = { .id_table = generic_device_ids, .usb_driver = &generic_driver, .num_ports = 1, - .shutdown = usb_serial_generic_shutdown, + .disconnect = usb_serial_generic_disconnect, + .release = usb_serial_generic_release, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, .resume = usb_serial_generic_resume, @@ -184,13 +185,94 @@ int usb_serial_generic_resume(struct usb_serial *serial) } EXPORT_SYMBOL_GPL(usb_serial_generic_resume); -void usb_serial_generic_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +void usb_serial_generic_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); generic_cleanup(port); } +static int usb_serial_multi_urb_write(struct tty_struct *tty, + struct usb_serial_port *port, const unsigned char *buf, int count) +{ + unsigned long flags; + struct urb *urb; + unsigned char *buffer; + int status; + int towrite; + int bwrite = 0; + + dbg("%s - port %d", __func__, port->number); + + if (count == 0) + dbg("%s - write request of 0 bytes", __func__); + + while (count > 0) { + towrite = (count > port->bulk_out_size) ? + port->bulk_out_size : count; + spin_lock_irqsave(&port->lock, flags); + if (port->urbs_in_flight > + port->serial->type->max_in_flight_urbs) { + spin_unlock_irqrestore(&port->lock, flags); + dbg("%s - write limit hit\n", __func__); + return bwrite; + } + port->tx_bytes_flight += towrite; + port->urbs_in_flight++; + spin_unlock_irqrestore(&port->lock, flags); + + buffer = kmalloc(towrite, GFP_ATOMIC); + if (!buffer) { + dev_err(&port->dev, + "%s ran out of kernel memory for urb ...\n", __func__); + goto error_no_buffer; + } + + urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!urb) { + dev_err(&port->dev, "%s - no more free urbs\n", + __func__); + goto error_no_urb; + } + + /* Copy data */ + memcpy(buffer, buf + bwrite, towrite); + usb_serial_debug_data(debug, &port->dev, __func__, + towrite, buffer); + /* fill the buffer and send it */ + usb_fill_bulk_urb(urb, port->serial->dev, + usb_sndbulkpipe(port->serial->dev, + port->bulk_out_endpointAddress), + buffer, towrite, + usb_serial_generic_write_bulk_callback, port); + + status = usb_submit_urb(urb, GFP_ATOMIC); + if (status) { + dev_err(&port->dev, + "%s - failed submitting write urb, error %d\n", + __func__, status); + goto error; + } + + /* This urb is the responsibility of the host driver now */ + usb_free_urb(urb); + dbg("%s write: %d", __func__, towrite); + count -= towrite; + bwrite += towrite; + } + return bwrite; + +error: + usb_free_urb(urb); +error_no_urb: + kfree(buffer); +error_no_buffer: + spin_lock_irqsave(&port->lock, flags); + port->urbs_in_flight--; + port->tx_bytes_flight -= towrite; + spin_unlock_irqrestore(&port->lock, flags); + return bwrite; +} + int usb_serial_generic_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { @@ -208,6 +290,11 @@ int usb_serial_generic_write(struct tty_struct *tty, /* only do something if we have a bulk out endpoint */ if (serial->num_bulk_out) { unsigned long flags; + + if (serial->type->max_in_flight_urbs) + return usb_serial_multi_urb_write(tty, port, + buf, count); + spin_lock_irqsave(&port->lock, flags); if (port->write_urb_busy) { spin_unlock_irqrestore(&port->lock, flags); @@ -253,20 +340,26 @@ int usb_serial_generic_write(struct tty_struct *tty, /* no bulk out, so return 0 bytes written */ return 0; } +EXPORT_SYMBOL_GPL(usb_serial_generic_write); int usb_serial_generic_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; + unsigned long flags; int room = 0; dbg("%s - port %d", __func__, port->number); - - /* FIXME: Locking */ - if (serial->num_bulk_out) { - if (!(port->write_urb_busy)) - room = port->bulk_out_size; + spin_lock_irqsave(&port->lock, flags); + if (serial->type->max_in_flight_urbs) { + if (port->urbs_in_flight < serial->type->max_in_flight_urbs) + room = port->bulk_out_size * + (serial->type->max_in_flight_urbs - + port->urbs_in_flight); + } else if (serial->num_bulk_out && !(port->write_urb_busy)) { + room = port->bulk_out_size; } + spin_unlock_irqrestore(&port->lock, flags); dbg("%s - returns %d", __func__, room); return room; @@ -277,11 +370,16 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; int chars = 0; + unsigned long flags; dbg("%s - port %d", __func__, port->number); - /* FIXME: Locking */ - if (serial->num_bulk_out) { + if (serial->type->max_in_flight_urbs) { + spin_lock_irqsave(&port->lock, flags); + chars = port->tx_bytes_flight; + spin_unlock_irqrestore(&port->lock, flags); + } else if (serial->num_bulk_out) { + /* FIXME: Locking */ if (port->write_urb_busy) chars = port->write_urb->transfer_buffer_length; } @@ -291,7 +389,8 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) } -static void resubmit_read_urb(struct usb_serial_port *port, gfp_t mem_flags) +void usb_serial_generic_resubmit_read_urb(struct usb_serial_port *port, + gfp_t mem_flags) { struct urb *urb = port->read_urb; struct usb_serial *serial = port->serial; @@ -312,25 +411,35 @@ static void resubmit_read_urb(struct usb_serial_port *port, gfp_t mem_flags) "%s - failed resubmitting read urb, error %d\n", __func__, result); } +EXPORT_SYMBOL_GPL(usb_serial_generic_resubmit_read_urb); /* Push data to tty layer and resubmit the bulk read URB */ static void flush_and_resubmit_read_urb(struct usb_serial_port *port) { struct urb *urb = port->read_urb; struct tty_struct *tty = tty_port_tty_get(&port->port); - int room; - - /* Push data to tty */ - if (tty && urb->actual_length) { - room = tty_buffer_request_room(tty, urb->actual_length); - if (room) { - tty_insert_flip_string(tty, urb->transfer_buffer, room); - tty_flip_buffer_push(tty); + char *ch = (char *)urb->transfer_buffer; + int i; + + if (!tty) + goto done; + + /* The per character mucking around with sysrq path it too slow for + stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases + where the USB serial is not a console anyway */ + if (!port->console || !port->sysrq) + tty_insert_flip_string(tty, ch, urb->actual_length); + else { + /* Push data to tty */ + for (i = 0; i < urb->actual_length; i++, ch++) { + if (!usb_serial_handle_sysrq_char(tty, port, *ch)) + tty_insert_flip_char(tty, *ch, TTY_NORMAL); } } + tty_flip_buffer_push(tty); tty_kref_put(tty); - - resubmit_read_urb(port, GFP_ATOMIC); +done: + usb_serial_generic_resubmit_read_urb(port, GFP_ATOMIC); } void usb_serial_generic_read_bulk_callback(struct urb *urb) @@ -364,12 +473,24 @@ EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback); void usb_serial_generic_write_bulk_callback(struct urb *urb) { + unsigned long flags; struct usb_serial_port *port = urb->context; int status = urb->status; dbg("%s - port %d", __func__, port->number); - port->write_urb_busy = 0; + if (port->serial->type->max_in_flight_urbs) { + spin_lock_irqsave(&port->lock, flags); + --port->urbs_in_flight; + port->tx_bytes_flight -= urb->transfer_buffer_length; + if (port->urbs_in_flight < 0) + port->urbs_in_flight = 0; + spin_unlock_irqrestore(&port->lock, flags); + } else { + /* Handle the case for single urb mode */ + port->write_urb_busy = 0; + } + if (status) { dbg("%s - nonzero write bulk status received: %d", __func__, status); @@ -409,11 +530,37 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) if (was_throttled) { /* Resume reading from device */ - resubmit_read_urb(port, GFP_KERNEL); + usb_serial_generic_resubmit_read_urb(port, GFP_KERNEL); + } +} + +int usb_serial_handle_sysrq_char(struct tty_struct *tty, + struct usb_serial_port *port, unsigned int ch) +{ + if (port->sysrq && port->console) { + if (ch && time_before(jiffies, port->sysrq)) { + handle_sysrq(ch, tty); + port->sysrq = 0; + return 1; + } + port->sysrq = 0; + } + return 0; +} +EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char); + +int usb_serial_handle_break(struct usb_serial_port *port) +{ + if (!port->sysrq) { + port->sysrq = jiffies + HZ*5; + return 1; } + port->sysrq = 0; + return 0; } +EXPORT_SYMBOL_GPL(usb_serial_handle_break); -void usb_serial_generic_shutdown(struct usb_serial *serial) +void usb_serial_generic_disconnect(struct usb_serial *serial) { int i; @@ -424,3 +571,7 @@ void usb_serial_generic_shutdown(struct usb_serial *serial) generic_cleanup(serial->port[i]); } +void usb_serial_generic_release(struct usb_serial *serial) +{ + dbg("%s", __func__); +} diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index fb4a73d090f6..0191693625d6 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -207,8 +207,7 @@ static void edge_bulk_out_cmd_callback(struct urb *urb); /* function prototypes for the usbserial callbacks */ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void edge_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static void edge_close(struct usb_serial_port *port); static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int edge_write_room(struct tty_struct *tty); @@ -225,7 +224,8 @@ static int edge_tiocmget(struct tty_struct *tty, struct file *file); static int edge_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int edge_startup(struct usb_serial *serial); -static void edge_shutdown(struct usb_serial *serial); +static void edge_disconnect(struct usb_serial *serial); +static void edge_release(struct usb_serial *serial); #include "io_tables.h" /* all of the devices that this driver supports */ @@ -965,7 +965,7 @@ static int edge_open(struct tty_struct *tty, if (!edge_port->txfifo.fifo) { dbg("%s - no memory", __func__); - edge_close(tty, port, filp); + edge_close(port); return -ENOMEM; } @@ -975,7 +975,7 @@ static int edge_open(struct tty_struct *tty, if (!edge_port->write_urb) { dbg("%s - no memory", __func__); - edge_close(tty, port, filp); + edge_close(port); return -ENOMEM; } @@ -1099,8 +1099,7 @@ static void block_until_tx_empty(struct edgeport_port *edge_port) * edge_close * this function is called by the tty driver when a port is closed *****************************************************************************/ -static void edge_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void edge_close(struct usb_serial_port *port) { struct edgeport_serial *edge_serial; struct edgeport_port *edge_port; @@ -3195,21 +3194,16 @@ static int edge_startup(struct usb_serial *serial) /**************************************************************************** - * edge_shutdown + * edge_disconnect * This function is called whenever the device is removed from the usb bus. ****************************************************************************/ -static void edge_shutdown(struct usb_serial *serial) +static void edge_disconnect(struct usb_serial *serial) { struct edgeport_serial *edge_serial = usb_get_serial_data(serial); - int i; dbg("%s", __func__); /* stop reads and writes on all ports */ - for (i = 0; i < serial->num_ports; ++i) { - kfree(usb_get_serial_port_data(serial->port[i])); - usb_set_serial_port_data(serial->port[i], NULL); - } /* free up our endpoint stuff */ if (edge_serial->is_epic) { usb_kill_urb(edge_serial->interrupt_read_urb); @@ -3220,9 +3214,24 @@ static void edge_shutdown(struct usb_serial *serial) usb_free_urb(edge_serial->read_urb); kfree(edge_serial->bulk_in_buffer); } +} + + +/**************************************************************************** + * edge_release + * This function is called when the device structure is deallocated. + ****************************************************************************/ +static void edge_release(struct usb_serial *serial) +{ + struct edgeport_serial *edge_serial = usb_get_serial_data(serial); + int i; + + dbg("%s", __func__); + + for (i = 0; i < serial->num_ports; ++i) + kfree(usb_get_serial_port_data(serial->port[i])); kfree(edge_serial); - usb_set_serial_data(serial, NULL); } diff --git a/drivers/usb/serial/io_tables.h b/drivers/usb/serial/io_tables.h index 7eb9d67b81b6..9241d3147513 100644 --- a/drivers/usb/serial/io_tables.h +++ b/drivers/usb/serial/io_tables.h @@ -117,7 +117,8 @@ static struct usb_serial_driver edgeport_2port_device = { .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, - .shutdown = edge_shutdown, + .disconnect = edge_disconnect, + .release = edge_release, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, @@ -145,7 +146,8 @@ static struct usb_serial_driver edgeport_4port_device = { .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, - .shutdown = edge_shutdown, + .disconnect = edge_disconnect, + .release = edge_release, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, @@ -173,7 +175,8 @@ static struct usb_serial_driver edgeport_8port_device = { .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, - .shutdown = edge_shutdown, + .disconnect = edge_disconnect, + .release = edge_release, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, @@ -200,7 +203,8 @@ static struct usb_serial_driver epic_device = { .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, - .shutdown = edge_shutdown, + .disconnect = edge_disconnect, + .release = edge_release, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 513b25e044c1..e8bc42f92e79 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -102,7 +102,7 @@ struct edgeport_port { __u8 shadow_mcr; __u8 shadow_lsr; __u8 lsr_mask; - __u32 ump_read_timeout; /* Number of miliseconds the UMP will + __u32 ump_read_timeout; /* Number of milliseconds the UMP will wait without data before completing a read short */ int baud_rate; @@ -2009,8 +2009,7 @@ release_es_lock: return status; } -static void edge_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void edge_close(struct usb_serial_port *port) { struct edgeport_serial *edge_serial; struct edgeport_port *edge_port; @@ -2664,7 +2663,7 @@ cleanup: return -ENOMEM; } -static void edge_shutdown(struct usb_serial *serial) +static void edge_disconnect(struct usb_serial *serial) { int i; struct edgeport_port *edge_port; @@ -2674,12 +2673,22 @@ static void edge_shutdown(struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { edge_port = usb_get_serial_port_data(serial->port[i]); edge_remove_sysfs_attrs(edge_port->port); + } +} + +static void edge_release(struct usb_serial *serial) +{ + int i; + struct edgeport_port *edge_port; + + dbg("%s", __func__); + + for (i = 0; i < serial->num_ports; ++i) { + edge_port = usb_get_serial_port_data(serial->port[i]); edge_buf_free(edge_port->ep_out_buf); kfree(edge_port); - usb_set_serial_port_data(serial->port[i], NULL); } kfree(usb_get_serial_data(serial)); - usb_set_serial_data(serial, NULL); } @@ -2916,7 +2925,8 @@ static struct usb_serial_driver edgeport_1port_device = { .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, - .shutdown = edge_shutdown, + .disconnect = edge_disconnect, + .release = edge_release, .port_probe = edge_create_sysfs_attrs, .ioctl = edge_ioctl, .set_termios = edge_set_termios, @@ -2945,7 +2955,8 @@ static struct usb_serial_driver edgeport_2port_device = { .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, - .shutdown = edge_shutdown, + .disconnect = edge_disconnect, + .release = edge_release, .port_probe = edge_create_sysfs_attrs, .ioctl = edge_ioctl, .set_termios = edge_set_termios, diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index cd62825a9ac3..2545d45ce16f 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -76,11 +76,9 @@ static int initial_wait; /* Function prototypes for an ipaq */ static int ipaq_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void ipaq_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void ipaq_close(struct usb_serial_port *port); static int ipaq_calc_num_ports(struct usb_serial *serial); static int ipaq_startup(struct usb_serial *serial); -static void ipaq_shutdown(struct usb_serial *serial); static int ipaq_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int ipaq_write_bulk(struct usb_serial_port *port, @@ -577,7 +575,6 @@ static struct usb_serial_driver ipaq_device = { .close = ipaq_close, .attach = ipaq_startup, .calc_num_ports = ipaq_calc_num_ports, - .shutdown = ipaq_shutdown, .write = ipaq_write, .write_room = ipaq_write_room, .chars_in_buffer = ipaq_chars_in_buffer, @@ -714,8 +711,7 @@ error: } -static void ipaq_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void ipaq_close(struct usb_serial_port *port) { struct ipaq_private *priv = usb_get_serial_port_data(port); @@ -992,11 +988,6 @@ static int ipaq_startup(struct usb_serial *serial) return usb_reset_configuration(serial->dev); } -static void ipaq_shutdown(struct usb_serial *serial) -{ - dbg("%s", __func__); -} - static int __init ipaq_init(void) { int retval; diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c index da2a2b46644a..29ad038b9c8d 100644 --- a/drivers/usb/serial/ipw.c +++ b/drivers/usb/serial/ipw.c @@ -302,23 +302,17 @@ static int ipw_open(struct tty_struct *tty, return 0; } -static void ipw_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void ipw_dtr_rts(struct usb_serial_port *port, int on) { struct usb_device *dev = port->serial->dev; int result; - if (tty_hung_up_p(filp)) { - dbg("%s: tty_hung_up_p ...", __func__); - return; - } - /*--1: drop the dtr */ dbg("%s:dropping dtr", __func__); result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), IPW_SIO_SET_PIN, USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, - IPW_PIN_CLRDTR, + on ? IPW_PIN_SETDTR : IPW_PIN_CLRDTR, 0, NULL, 0, @@ -332,7 +326,7 @@ static void ipw_close(struct tty_struct *tty, result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), IPW_SIO_SET_PIN, USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, - IPW_PIN_CLRRTS, + on ? IPW_PIN_SETRTS : IPW_PIN_CLRRTS, 0, NULL, 0, @@ -340,7 +334,12 @@ static void ipw_close(struct tty_struct *tty, if (result < 0) dev_err(&port->dev, "dropping rts failed (error = %d)\n", result); +} +static void ipw_close(struct usb_serial_port *port) +{ + struct usb_device *dev = port->serial->dev; + int result; /*--3: purge */ dbg("%s:sending purge", __func__); @@ -461,6 +460,7 @@ static struct usb_serial_driver ipw_device = { .num_ports = 1, .open = ipw_open, .close = ipw_close, + .dtr_rts = ipw_dtr_rts, .port_probe = ipw_probe, .port_remove = ipw_disconnect, .write = ipw_write, diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 4e2cda93da59..66009b6b763a 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -88,8 +88,7 @@ static int xbof = -1; static int ir_startup (struct usb_serial *serial); static int ir_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filep); -static void ir_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filep); +static void ir_close(struct usb_serial_port *port); static int ir_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static void ir_write_bulk_callback (struct urb *urb); @@ -346,8 +345,7 @@ static int ir_open(struct tty_struct *tty, return result; } -static void ir_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file * filp) +static void ir_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 4473d442b2aa..96873a7a32b0 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -40,7 +40,7 @@ static int debug; /* * Version Information */ -#define DRIVER_VERSION "v0.5" +#define DRIVER_VERSION "v0.10" #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver" static struct usb_device_id id_table[] = { @@ -70,7 +70,6 @@ static void read_rxcmd_callback(struct urb *urb); struct iuu_private { spinlock_t lock; /* store irq state */ wait_queue_head_t delta_msr_wait; - u8 line_control; u8 line_status; u8 termios_initialized; int tiostatus; /* store IUART SIGNAL for tiocmget call */ @@ -122,8 +121,8 @@ static int iuu_startup(struct usb_serial *serial) return 0; } -/* Shutdown function */ -static void iuu_shutdown(struct usb_serial *serial) +/* Release function */ +static void iuu_release(struct usb_serial *serial) { struct usb_serial_port *port = serial->port[0]; struct iuu_private *priv = usb_get_serial_port_data(port); @@ -651,32 +650,33 @@ static int iuu_bulk_write(struct usb_serial_port *port) unsigned long flags; int result; int i; + int buf_len; char *buf_ptr = port->write_urb->transfer_buffer; dbg("%s - enter", __func__); + spin_lock_irqsave(&priv->lock, flags); *buf_ptr++ = IUU_UART_ESC; *buf_ptr++ = IUU_UART_TX; *buf_ptr++ = priv->writelen; - memcpy(buf_ptr, priv->writebuf, - priv->writelen); + memcpy(buf_ptr, priv->writebuf, priv->writelen); + buf_len = priv->writelen; + priv->writelen = 0; + spin_unlock_irqrestore(&priv->lock, flags); if (debug == 1) { - for (i = 0; i < priv->writelen; i++) + for (i = 0; i < buf_len; i++) sprintf(priv->dbgbuf + i*2 , "%02X", priv->writebuf[i]); - priv->dbgbuf[priv->writelen+i*2] = 0; + priv->dbgbuf[buf_len+i*2] = 0; dbg("%s - writing %i chars : %s", __func__, - priv->writelen, priv->dbgbuf); + buf_len, priv->dbgbuf); } usb_fill_bulk_urb(port->write_urb, port->serial->dev, usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), - port->write_urb->transfer_buffer, priv->writelen + 3, + port->write_urb->transfer_buffer, buf_len + 3, iuu_rxcmd, port); result = usb_submit_urb(port->write_urb, GFP_ATOMIC); - spin_lock_irqsave(&priv->lock, flags); - priv->writelen = 0; - spin_unlock_irqrestore(&priv->lock, flags); usb_serial_port_softint(port); return result; } @@ -770,14 +770,10 @@ static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, return -ENOMEM; spin_lock_irqsave(&priv->lock, flags); - if (priv->writelen > 0) { - /* buffer already filled but not commited */ - spin_unlock_irqrestore(&priv->lock, flags); - return 0; - } + /* fill the buffer */ - memcpy(priv->writebuf, buf, count); - priv->writelen = count; + memcpy(priv->writebuf + priv->writelen, buf, count); + priv->writelen += count; spin_unlock_irqrestore(&priv->lock, flags); return count; @@ -819,7 +815,7 @@ static int iuu_uart_on(struct usb_serial_port *port) buf[0] = IUU_UART_ENABLE; buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); buf[2] = (u8) (0x00FF & IUU_BAUD_9600); - buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN); + buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); status = bulk_immediate(port, buf, 4); if (status != IUU_OPERATION_OK) { @@ -946,19 +942,59 @@ static int iuu_uart_baud(struct usb_serial_port *port, u32 baud, return status; } -static int set_control_lines(struct usb_device *dev, u8 value) +static void iuu_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) { - return 0; + const u32 supported_mask = CMSPAR|PARENB|PARODD; + + unsigned int cflag = tty->termios->c_cflag; + int status; + u32 actual; + u32 parity; + int csize = CS7; + int baud = 9600; /* Fixed for the moment */ + u32 newval = cflag & supported_mask; + + /* compute the parity parameter */ + parity = 0; + if (cflag & CMSPAR) { /* Using mark space */ + if (cflag & PARODD) + parity |= IUU_PARITY_SPACE; + else + parity |= IUU_PARITY_MARK; + } else if (!(cflag & PARENB)) { + parity |= IUU_PARITY_NONE; + csize = CS8; + } else if (cflag & PARODD) + parity |= IUU_PARITY_ODD; + else + parity |= IUU_PARITY_EVEN; + + parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); + + /* set it */ + status = iuu_uart_baud(port, + (clockmode == 2) ? 16457 : 9600 * boost / 100, + &actual, parity); + + /* set the termios value to the real one, so the user now what has + * changed. We support few fields so its easies to copy the old hw + * settings back over and then adjust them + */ + if (old_termios) + tty_termios_copy_hw(tty->termios, old_termios); + if (status != 0) /* Set failed - return old bits */ + return; + /* Re-encode speed, parity and csize */ + tty_encode_baud_rate(tty, baud, baud); + tty->termios->c_cflag &= ~(supported_mask|CSIZE); + tty->termios->c_cflag |= newval | csize; } -static void iuu_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void iuu_close(struct usb_serial_port *port) { /* iuu_led (port,255,0,0,0); */ struct usb_serial *serial; - struct iuu_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - unsigned int c_cflag; serial = port->serial; if (!serial) @@ -968,17 +1004,6 @@ static void iuu_close(struct tty_struct *tty, iuu_uart_off(port); if (serial->dev) { - if (tty) { - c_cflag = tty->termios->c_cflag; - if (c_cflag & HUPCL) { - /* drop DTR and RTS */ - priv = usb_get_serial_port_data(port); - spin_lock_irqsave(&priv->lock, flags); - priv->line_control = 0; - spin_unlock_irqrestore(&priv->lock, flags); - set_control_lines(port->serial->dev, 0); - } - } /* free writebuf */ /* shutdown our urbs */ dbg("%s - shutting down urbs", __func__); @@ -1154,7 +1179,7 @@ static int iuu_open(struct tty_struct *tty, if (result) { dev_err(&port->dev, "%s - failed submitting read urb," " error %d\n", __func__, result); - iuu_close(tty, port, NULL); + iuu_close(port); return -EPROTO; } else { dbg("%s - rxcmd OK", __func__); @@ -1175,8 +1200,9 @@ static struct usb_serial_driver iuu_device = { .read_bulk_callback = iuu_uart_read_callback, .tiocmget = iuu_tiocmget, .tiocmset = iuu_tiocmset, + .set_termios = iuu_set_termios, .attach = iuu_startup, - .shutdown = iuu_shutdown, + .release = iuu_release, }; static int __init iuu_init(void) diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 00daa8f7759a..2594b8743d3f 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -1298,8 +1298,16 @@ static inline void stop_urb(struct urb *urb) usb_kill_urb(urb); } -static void keyspan_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void keyspan_dtr_rts(struct usb_serial_port *port, int on) +{ + struct keyspan_port_private *p_priv = usb_get_serial_port_data(port); + + p_priv->rts_state = on; + p_priv->dtr_state = on; + keyspan_send_setup(port, 0); +} + +static void keyspan_close(struct usb_serial_port *port) { int i; struct usb_serial *serial = port->serial; @@ -1336,7 +1344,6 @@ static void keyspan_close(struct tty_struct *tty, stop_urb(p_priv->out_urbs[i]); } } - tty_port_tty_set(&port->port, NULL); } /* download the firmware to a pre-renumeration device */ @@ -2682,7 +2689,7 @@ static int keyspan_startup(struct usb_serial *serial) return 0; } -static void keyspan_shutdown(struct usb_serial *serial) +static void keyspan_disconnect(struct usb_serial *serial) { int i, j; struct usb_serial_port *port; @@ -2722,6 +2729,17 @@ static void keyspan_shutdown(struct usb_serial *serial) usb_free_urb(p_priv->out_urbs[j]); } } +} + +static void keyspan_release(struct usb_serial *serial) +{ + int i; + struct usb_serial_port *port; + struct keyspan_serial_private *s_priv; + + dbg("%s", __func__); + + s_priv = usb_get_serial_data(serial); /* dbg("Freeing serial->private."); */ kfree(s_priv); diff --git a/drivers/usb/serial/keyspan.h b/drivers/usb/serial/keyspan.h index 38b4582e0734..3107ed15af64 100644 --- a/drivers/usb/serial/keyspan.h +++ b/drivers/usb/serial/keyspan.h @@ -38,11 +38,11 @@ static int keyspan_open (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void keyspan_close (struct tty_struct *tty, - struct usb_serial_port *port, - struct file *filp); +static void keyspan_close (struct usb_serial_port *port); +static void keyspan_dtr_rts (struct usb_serial_port *port, int on); static int keyspan_startup (struct usb_serial *serial); -static void keyspan_shutdown (struct usb_serial *serial); +static void keyspan_disconnect (struct usb_serial *serial); +static void keyspan_release (struct usb_serial *serial); static int keyspan_write_room (struct tty_struct *tty); static int keyspan_write (struct tty_struct *tty, @@ -562,6 +562,7 @@ static struct usb_serial_driver keyspan_1port_device = { .num_ports = 1, .open = keyspan_open, .close = keyspan_close, + .dtr_rts = keyspan_dtr_rts, .write = keyspan_write, .write_room = keyspan_write_room, .set_termios = keyspan_set_termios, @@ -569,7 +570,8 @@ static struct usb_serial_driver keyspan_1port_device = { .tiocmget = keyspan_tiocmget, .tiocmset = keyspan_tiocmset, .attach = keyspan_startup, - .shutdown = keyspan_shutdown, + .disconnect = keyspan_disconnect, + .release = keyspan_release, }; static struct usb_serial_driver keyspan_2port_device = { @@ -582,6 +584,7 @@ static struct usb_serial_driver keyspan_2port_device = { .num_ports = 2, .open = keyspan_open, .close = keyspan_close, + .dtr_rts = keyspan_dtr_rts, .write = keyspan_write, .write_room = keyspan_write_room, .set_termios = keyspan_set_termios, @@ -589,7 +592,8 @@ static struct usb_serial_driver keyspan_2port_device = { .tiocmget = keyspan_tiocmget, .tiocmset = keyspan_tiocmset, .attach = keyspan_startup, - .shutdown = keyspan_shutdown, + .disconnect = keyspan_disconnect, + .release = keyspan_release, }; static struct usb_serial_driver keyspan_4port_device = { @@ -602,6 +606,7 @@ static struct usb_serial_driver keyspan_4port_device = { .num_ports = 4, .open = keyspan_open, .close = keyspan_close, + .dtr_rts = keyspan_dtr_rts, .write = keyspan_write, .write_room = keyspan_write_room, .set_termios = keyspan_set_termios, @@ -609,7 +614,8 @@ static struct usb_serial_driver keyspan_4port_device = { .tiocmget = keyspan_tiocmget, .tiocmset = keyspan_tiocmset, .attach = keyspan_startup, - .shutdown = keyspan_shutdown, + .disconnect = keyspan_disconnect, + .release = keyspan_release, }; #endif diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index bf1ae247da66..d0b12e40c2b1 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -651,6 +651,35 @@ static int keyspan_pda_chars_in_buffer(struct tty_struct *tty) } +static void keyspan_pda_dtr_rts(struct usb_serial_port *port, int on) +{ + struct usb_serial *serial = port->serial; + + if (serial->dev) { + if (on) + keyspan_pda_set_modem_info(serial, (1<<7) | (1<< 2)); + else + keyspan_pda_set_modem_info(serial, 0); + } +} + +static int keyspan_pda_carrier_raised(struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + unsigned char modembits; + + /* If we can read the modem status and the DCD is low then + carrier is not raised yet */ + if (keyspan_pda_get_modem_info(serial, &modembits) >= 0) { + if (!(modembits & (1>>6))) + return 0; + } + /* Carrier raised, or we failed (eg disconnected) so + progress accordingly */ + return 1; +} + + static int keyspan_pda_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp) { @@ -682,13 +711,6 @@ static int keyspan_pda_open(struct tty_struct *tty, priv->tx_room = room; priv->tx_throttled = room ? 0 : 1; - /* the normal serial device seems to always turn on DTR and RTS here, - so do the same */ - if (tty && (tty->termios->c_cflag & CBAUD)) - keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2)); - else - keyspan_pda_set_modem_info(serial, 0); - /*Start reading from the device*/ port->interrupt_in_urb->dev = serial->dev; rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); @@ -700,19 +722,11 @@ static int keyspan_pda_open(struct tty_struct *tty, error: return rc; } - - -static void keyspan_pda_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void keyspan_pda_close(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; if (serial->dev) { - /* the normal serial device seems to always shut - off DTR and RTS now */ - if (tty->termios->c_cflag & HUPCL) - keyspan_pda_set_modem_info(serial, 0); - /* shutdown our bulk reads and writes */ usb_kill_urb(port->write_urb); usb_kill_urb(port->interrupt_in_urb); @@ -795,7 +809,7 @@ static int keyspan_pda_startup(struct usb_serial *serial) return 0; } -static void keyspan_pda_shutdown(struct usb_serial *serial) +static void keyspan_pda_release(struct usb_serial *serial) { dbg("%s", __func__); @@ -839,6 +853,8 @@ static struct usb_serial_driver keyspan_pda_device = { .usb_driver = &keyspan_pda_driver, .id_table = id_table_std, .num_ports = 1, + .dtr_rts = keyspan_pda_dtr_rts, + .carrier_raised = keyspan_pda_carrier_raised, .open = keyspan_pda_open, .close = keyspan_pda_close, .write = keyspan_pda_write, @@ -853,7 +869,7 @@ static struct usb_serial_driver keyspan_pda_device = { .tiocmget = keyspan_pda_tiocmget, .tiocmset = keyspan_pda_tiocmset, .attach = keyspan_pda_startup, - .shutdown = keyspan_pda_shutdown, + .release = keyspan_pda_release, }; diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index fcd9082f3e7f..0f44bb8e8d4f 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -73,11 +73,11 @@ static int debug; * Function prototypes */ static int klsi_105_startup(struct usb_serial *serial); -static void klsi_105_shutdown(struct usb_serial *serial); +static void klsi_105_disconnect(struct usb_serial *serial); +static void klsi_105_release(struct usb_serial *serial); static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void klsi_105_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void klsi_105_close(struct usb_serial_port *port); static int klsi_105_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static void klsi_105_write_bulk_callback(struct urb *urb); @@ -132,7 +132,8 @@ static struct usb_serial_driver kl5kusb105d_device = { .tiocmget = klsi_105_tiocmget, .tiocmset = klsi_105_tiocmset, .attach = klsi_105_startup, - .shutdown = klsi_105_shutdown, + .disconnect = klsi_105_disconnect, + .release = klsi_105_release, .throttle = klsi_105_throttle, .unthrottle = klsi_105_unthrottle, }; @@ -316,7 +317,7 @@ err_cleanup: } /* klsi_105_startup */ -static void klsi_105_shutdown(struct usb_serial *serial) +static void klsi_105_disconnect(struct usb_serial *serial) { int i; @@ -326,33 +327,36 @@ static void klsi_105_shutdown(struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { struct klsi_105_private *priv = usb_get_serial_port_data(serial->port[i]); - unsigned long flags; if (priv) { /* kill our write urb pool */ int j; struct urb **write_urbs = priv->write_urb_pool; - spin_lock_irqsave(&priv->lock, flags); for (j = 0; j < NUM_URBS; j++) { if (write_urbs[j]) { - /* FIXME - uncomment the following - * usb_kill_urb call when the host - * controllers get fixed to set - * urb->dev = NULL after the urb is - * finished. Otherwise this call - * oopses. */ - /* usb_kill_urb(write_urbs[j]); */ - kfree(write_urbs[j]->transfer_buffer); + usb_kill_urb(write_urbs[j]); usb_free_urb(write_urbs[j]); } } - spin_unlock_irqrestore(&priv->lock, flags); - kfree(priv); - usb_set_serial_port_data(serial->port[i], NULL); } } -} /* klsi_105_shutdown */ +} /* klsi_105_disconnect */ + + +static void klsi_105_release(struct usb_serial *serial) +{ + int i; + + dbg("%s", __func__); + + for (i = 0; i < serial->num_ports; ++i) { + struct klsi_105_private *priv = + usb_get_serial_port_data(serial->port[i]); + + kfree(priv); + } +} /* klsi_105_release */ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp) @@ -447,8 +451,7 @@ exit: } /* klsi_105_open */ -static void klsi_105_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void klsi_105_close(struct usb_serial_port *port) { struct klsi_105_private *priv = usb_get_serial_port_data(port); int rc; diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index c148544953b3..6db0e561f680 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -69,11 +69,10 @@ static int debug; /* Function prototypes */ static int kobil_startup(struct usb_serial *serial); -static void kobil_shutdown(struct usb_serial *serial); +static void kobil_release(struct usb_serial *serial); static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void kobil_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static void kobil_close(struct usb_serial_port *port); static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int kobil_write_room(struct tty_struct *tty); @@ -118,7 +117,7 @@ static struct usb_serial_driver kobil_device = { .id_table = id_table, .num_ports = 1, .attach = kobil_startup, - .shutdown = kobil_shutdown, + .release = kobil_release, .ioctl = kobil_ioctl, .set_termios = kobil_set_termios, .tiocmget = kobil_tiocmget, @@ -202,17 +201,13 @@ static int kobil_startup(struct usb_serial *serial) } -static void kobil_shutdown(struct usb_serial *serial) +static void kobil_release(struct usb_serial *serial) { int i; dbg("%s - port %d", __func__, serial->port[0]->number); - for (i = 0; i < serial->num_ports; ++i) { - while (serial->port[i]->port.count > 0) - kobil_close(NULL, serial->port[i], NULL); + for (i = 0; i < serial->num_ports; ++i) kfree(usb_get_serial_port_data(serial->port[i])); - usb_set_serial_port_data(serial->port[i], NULL); - } } @@ -346,11 +341,11 @@ static int kobil_open(struct tty_struct *tty, } -static void kobil_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void kobil_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); + /* FIXME: Add rts/dtr methods */ if (port->write_urb) { usb_kill_urb(port->write_urb); usb_free_urb(port->write_urb); diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index 82930a7d5093..d8825e159aa5 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -92,11 +92,11 @@ static int debug; * Function prototypes */ static int mct_u232_startup(struct usb_serial *serial); -static void mct_u232_shutdown(struct usb_serial *serial); +static void mct_u232_release(struct usb_serial *serial); static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void mct_u232_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void mct_u232_close(struct usb_serial_port *port); +static void mct_u232_dtr_rts(struct usb_serial_port *port, int on); static void mct_u232_read_int_callback(struct urb *urb); static void mct_u232_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); @@ -140,6 +140,7 @@ static struct usb_serial_driver mct_u232_device = { .num_ports = 1, .open = mct_u232_open, .close = mct_u232_close, + .dtr_rts = mct_u232_dtr_rts, .throttle = mct_u232_throttle, .unthrottle = mct_u232_unthrottle, .read_int_callback = mct_u232_read_int_callback, @@ -148,7 +149,7 @@ static struct usb_serial_driver mct_u232_device = { .tiocmget = mct_u232_tiocmget, .tiocmset = mct_u232_tiocmset, .attach = mct_u232_startup, - .shutdown = mct_u232_shutdown, + .release = mct_u232_release, }; @@ -406,7 +407,7 @@ static int mct_u232_startup(struct usb_serial *serial) } /* mct_u232_startup */ -static void mct_u232_shutdown(struct usb_serial *serial) +static void mct_u232_release(struct usb_serial *serial) { struct mct_u232_private *priv; int i; @@ -416,12 +417,9 @@ static void mct_u232_shutdown(struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { /* My special items, the standard routines free my urbs */ priv = usb_get_serial_port_data(serial->port[i]); - if (priv) { - usb_set_serial_port_data(serial->port[i], NULL); - kfree(priv); - } + kfree(priv); } -} /* mct_u232_shutdown */ +} /* mct_u232_release */ static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp) @@ -496,29 +494,29 @@ error: return retval; } /* mct_u232_open */ - -static void mct_u232_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void mct_u232_dtr_rts(struct usb_serial_port *port, int on) { - unsigned int c_cflag; unsigned int control_state; struct mct_u232_private *priv = usb_get_serial_port_data(port); - dbg("%s port %d", __func__, port->number); - if (tty) { - c_cflag = tty->termios->c_cflag; - mutex_lock(&port->serial->disc_mutex); - if (c_cflag & HUPCL && !port->serial->disconnected) { - /* drop DTR and RTS */ - spin_lock_irq(&priv->lock); + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) { + /* drop DTR and RTS */ + spin_lock_irq(&priv->lock); + if (on) + priv->control_state |= TIOCM_DTR | TIOCM_RTS; + else priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); - control_state = priv->control_state; - spin_unlock_irq(&priv->lock); - mct_u232_set_modem_ctrl(port->serial, control_state); - } - mutex_unlock(&port->serial->disc_mutex); + control_state = priv->control_state; + spin_unlock_irq(&priv->lock); + mct_u232_set_modem_ctrl(port->serial, control_state); } + mutex_unlock(&port->serial->disc_mutex); +} +static void mct_u232_close(struct usb_serial_port *port) +{ + dbg("%s port %d", __func__, port->number); if (port->serial->dev) { /* shutdown our urbs */ diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 24e3b5d4b4d4..ccd4dd340d2c 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -521,7 +521,7 @@ static int mos7720_chars_in_buffer(struct tty_struct *tty) mos7720_port = usb_get_serial_port_data(port); if (mos7720_port == NULL) { dbg("%s:leaving ...........", __func__); - return -ENODEV; + return 0; } for (i = 0; i < NUM_URBS; ++i) { @@ -533,8 +533,7 @@ static int mos7720_chars_in_buffer(struct tty_struct *tty) return chars; } -static void mos7720_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void mos7720_close(struct usb_serial_port *port) { struct usb_serial *serial; struct moschip_port *mos7720_port; @@ -1522,19 +1521,16 @@ static int mos7720_startup(struct usb_serial *serial) return 0; } -static void mos7720_shutdown(struct usb_serial *serial) +static void mos7720_release(struct usb_serial *serial) { int i; /* free private structure allocated for serial port */ - for (i = 0; i < serial->num_ports; ++i) { + for (i = 0; i < serial->num_ports; ++i) kfree(usb_get_serial_port_data(serial->port[i])); - usb_set_serial_port_data(serial->port[i], NULL); - } /* free private structure allocated for serial device */ kfree(usb_get_serial_data(serial)); - usb_set_serial_data(serial, NULL); } static struct usb_driver usb_driver = { @@ -1559,7 +1555,7 @@ static struct usb_serial_driver moschip7720_2port_driver = { .throttle = mos7720_throttle, .unthrottle = mos7720_unthrottle, .attach = mos7720_startup, - .shutdown = mos7720_shutdown, + .release = mos7720_release, .ioctl = mos7720_ioctl, .set_termios = mos7720_set_termios, .write = mos7720_write, diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 84fb1dcd30dc..c31940a307f8 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -26,6 +26,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/tty.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> @@ -238,7 +239,7 @@ static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, { struct usb_device *dev = port->serial->dev; val = val & 0x00ff; - dbg("mos7840_set_reg_sync offset is %x, value %x\n", reg, val); + dbg("mos7840_set_reg_sync offset is %x, value %x", reg, val); return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, val, reg, NULL, 0, @@ -260,7 +261,7 @@ static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, MCS_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); - dbg("mos7840_get_reg_sync offset is %x, return val %x\n", reg, *val); + dbg("mos7840_get_reg_sync offset is %x, return val %x", reg, *val); *val = (*val) & 0x00ff; return ret; } @@ -282,18 +283,18 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, if (port->serial->num_ports == 4) { val |= (((__u16) port->number - (__u16) (port->serial->minor)) + 1) << 8; - dbg("mos7840_set_uart_reg application number is %x\n", val); + dbg("mos7840_set_uart_reg application number is %x", val); } else { if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { val |= (((__u16) port->number - (__u16) (port->serial->minor)) + 1) << 8; - dbg("mos7840_set_uart_reg application number is %x\n", + dbg("mos7840_set_uart_reg application number is %x", val); } else { val |= (((__u16) port->number - (__u16) (port->serial->minor)) + 2) << 8; - dbg("mos7840_set_uart_reg application number is %x\n", + dbg("mos7840_set_uart_reg application number is %x", val); } } @@ -315,24 +316,24 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, int ret = 0; __u16 Wval; - /* dbg("application number is %4x \n", + /* dbg("application number is %4x", (((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); */ /* Wval is same as application number */ if (port->serial->num_ports == 4) { Wval = (((__u16) port->number - (__u16) (port->serial->minor)) + 1) << 8; - dbg("mos7840_get_uart_reg application number is %x\n", Wval); + dbg("mos7840_get_uart_reg application number is %x", Wval); } else { if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { Wval = (((__u16) port->number - (__u16) (port->serial->minor)) + 1) << 8; - dbg("mos7840_get_uart_reg application number is %x\n", + dbg("mos7840_get_uart_reg application number is %x", Wval); } else { Wval = (((__u16) port->number - (__u16) (port->serial->minor)) + 2) << 8; - dbg("mos7840_get_uart_reg application number is %x\n", + dbg("mos7840_get_uart_reg application number is %x", Wval); } } @@ -346,11 +347,11 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) { - dbg("***************************************\n"); - dbg("SpRegOffset is %2x\n", mos7840_port->SpRegOffset); - dbg("ControlRegOffset is %2x \n", mos7840_port->ControlRegOffset); - dbg("DCRRegOffset is %2x \n", mos7840_port->DcrRegOffset); - dbg("***************************************\n"); + dbg("***************************************"); + dbg("SpRegOffset is %2x", mos7840_port->SpRegOffset); + dbg("ControlRegOffset is %2x", mos7840_port->ControlRegOffset); + dbg("DCRRegOffset is %2x", mos7840_port->DcrRegOffset); + dbg("***************************************"); } @@ -474,12 +475,12 @@ static void mos7840_control_callback(struct urb *urb) goto exit; } - dbg("%s urb buffer size is %d\n", __func__, urb->actual_length); - dbg("%s mos7840_port->MsrLsr is %d port %d\n", __func__, + dbg("%s urb buffer size is %d", __func__, urb->actual_length); + dbg("%s mos7840_port->MsrLsr is %d port %d", __func__, mos7840_port->MsrLsr, mos7840_port->port_num); data = urb->transfer_buffer; regval = (__u8) data[0]; - dbg("%s data is %x\n", __func__, regval); + dbg("%s data is %x", __func__, regval); if (mos7840_port->MsrLsr == 0) mos7840_handle_new_msr(mos7840_port, regval); else if (mos7840_port->MsrLsr == 1) @@ -538,7 +539,7 @@ static void mos7840_interrupt_callback(struct urb *urb) __u16 wval, wreg = 0; int status = urb->status; - dbg("%s", " : Entering\n"); + dbg("%s", " : Entering"); switch (status) { case 0: @@ -570,7 +571,7 @@ static void mos7840_interrupt_callback(struct urb *urb) * Byte 5 FIFO status for both */ if (length && length > 5) { - dbg("%s \n", "Wrong data !!!"); + dbg("%s", "Wrong data !!!"); return; } @@ -587,17 +588,17 @@ static void mos7840_interrupt_callback(struct urb *urb) (__u16) (serial->minor)) + 1) << 8; if (mos7840_port->open) { if (sp[i] & 0x01) { - dbg("SP%d No Interrupt !!!\n", i); + dbg("SP%d No Interrupt !!!", i); } else { switch (sp[i] & 0x0f) { case SERIAL_IIR_RLS: dbg("Serial Port %d: Receiver status error or ", i); - dbg("address bit detected in 9-bit mode\n"); + dbg("address bit detected in 9-bit mode"); mos7840_port->MsrLsr = 1; wreg = LINE_STATUS_REGISTER; break; case SERIAL_IIR_MS: - dbg("Serial Port %d: Modem status change\n", i); + dbg("Serial Port %d: Modem status change", i); mos7840_port->MsrLsr = 0; wreg = MODEM_STATUS_REGISTER; break; @@ -689,7 +690,7 @@ static void mos7840_bulk_in_callback(struct urb *urb) mos7840_port = urb->context; if (!mos7840_port) { - dbg("%s", "NULL mos7840_port pointer \n"); + dbg("%s", "NULL mos7840_port pointer"); mos7840_port->read_urb_busy = false; return; } @@ -702,41 +703,41 @@ static void mos7840_bulk_in_callback(struct urb *urb) port = (struct usb_serial_port *)mos7840_port->port; if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed \n"); + dbg("%s", "Port Paranoia failed"); mos7840_port->read_urb_busy = false; return; } serial = mos7840_get_usb_serial(port, __func__); if (!serial) { - dbg("%s\n", "Bad serial pointer "); + dbg("%s", "Bad serial pointer"); mos7840_port->read_urb_busy = false; return; } - dbg("%s\n", "Entering... \n"); + dbg("%s", "Entering... "); data = urb->transfer_buffer; - dbg("%s", "Entering ........... \n"); + dbg("%s", "Entering ..........."); if (urb->actual_length) { tty = tty_port_tty_get(&mos7840_port->port->port); if (tty) { tty_buffer_request_room(tty, urb->actual_length); tty_insert_flip_string(tty, data, urb->actual_length); - dbg(" %s \n", data); + dbg(" %s ", data); tty_flip_buffer_push(tty); tty_kref_put(tty); } mos7840_port->icount.rx += urb->actual_length; smp_wmb(); - dbg("mos7840_port->icount.rx is %d:\n", + dbg("mos7840_port->icount.rx is %d:", mos7840_port->icount.rx); } if (!mos7840_port->read_urb) { - dbg("%s", "URB KILLED !!!\n"); + dbg("%s", "URB KILLED !!!"); mos7840_port->read_urb_busy = false; return; } @@ -777,16 +778,16 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) spin_unlock(&mos7840_port->pool_lock); if (status) { - dbg("nonzero write bulk status received:%d\n", status); + dbg("nonzero write bulk status received:%d", status); return; } if (mos7840_port_paranoia_check(mos7840_port->port, __func__)) { - dbg("%s", "Port Paranoia failed \n"); + dbg("%s", "Port Paranoia failed"); return; } - dbg("%s \n", "Entering ........."); + dbg("%s", "Entering ........."); tty = tty_port_tty_get(&mos7840_port->port->port); if (tty && mos7840_port->open) @@ -830,15 +831,17 @@ static int mos7840_open(struct tty_struct *tty, struct moschip_port *mos7840_port; struct moschip_port *port0; + dbg ("%s enter", __func__); + if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed \n"); + dbg("%s", "Port Paranoia failed"); return -ENODEV; } serial = port->serial; if (mos7840_serial_paranoia_check(serial, __func__)) { - dbg("%s", "Serial Paranoia failed \n"); + dbg("%s", "Serial Paranoia failed"); return -ENODEV; } @@ -891,20 +894,20 @@ static int mos7840_open(struct tty_struct *tty, Data = 0x0; status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); if (status < 0) { - dbg("Reading Spreg failed\n"); + dbg("Reading Spreg failed"); return -1; } Data |= 0x80; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { - dbg("writing Spreg failed\n"); + dbg("writing Spreg failed"); return -1; } Data &= ~0x80; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { - dbg("writing Spreg failed\n"); + dbg("writing Spreg failed"); return -1; } /* End of block to be checked */ @@ -913,7 +916,7 @@ static int mos7840_open(struct tty_struct *tty, status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); if (status < 0) { - dbg("Reading Controlreg failed\n"); + dbg("Reading Controlreg failed"); return -1; } Data |= 0x08; /* Driver done bit */ @@ -921,7 +924,7 @@ static int mos7840_open(struct tty_struct *tty, status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); if (status < 0) { - dbg("writing Controlreg failed\n"); + dbg("writing Controlreg failed"); return -1; } /* do register settings here */ @@ -932,21 +935,21 @@ static int mos7840_open(struct tty_struct *tty, Data = 0x00; status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); if (status < 0) { - dbg("disableing interrupts failed\n"); + dbg("disabling interrupts failed"); return -1; } /* Set FIFO_CONTROL_REGISTER to the default value */ Data = 0x00; status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing FIFO_CONTROL_REGISTER failed\n"); + dbg("Writing FIFO_CONTROL_REGISTER failed"); return -1; } Data = 0xcf; status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing FIFO_CONTROL_REGISTER failed\n"); + dbg("Writing FIFO_CONTROL_REGISTER failed"); return -1; } @@ -1043,12 +1046,12 @@ static int mos7840_open(struct tty_struct *tty, * (can't set it up in mos7840_startup as the * * structures were not set up at that time.) */ - dbg("port number is %d \n", port->number); - dbg("serial number is %d \n", port->serial->minor); - dbg("Bulkin endpoint is %d \n", port->bulk_in_endpointAddress); - dbg("BulkOut endpoint is %d \n", port->bulk_out_endpointAddress); - dbg("Interrupt endpoint is %d \n", port->interrupt_in_endpointAddress); - dbg("port's number in the device is %d\n", mos7840_port->port_num); + dbg("port number is %d", port->number); + dbg("serial number is %d", port->serial->minor); + dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress); + dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress); + dbg("Interrupt endpoint is %d", port->interrupt_in_endpointAddress); + dbg("port's number in the device is %d", mos7840_port->port_num); mos7840_port->read_urb = port->read_urb; /* set up our bulk in urb */ @@ -1061,7 +1064,7 @@ static int mos7840_open(struct tty_struct *tty, mos7840_port->read_urb->transfer_buffer_length, mos7840_bulk_in_callback, mos7840_port); - dbg("mos7840_open: bulkin endpoint is %d\n", + dbg("mos7840_open: bulkin endpoint is %d", port->bulk_in_endpointAddress); mos7840_port->read_urb_busy = true; response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); @@ -1087,9 +1090,11 @@ static int mos7840_open(struct tty_struct *tty, mos7840_port->icount.tx = 0; mos7840_port->icount.rx = 0; - dbg("\n\nusb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p\n\n", + dbg("usb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p", serial, mos7840_port, port); + dbg ("%s leave", __func__); + return 0; } @@ -1112,16 +1117,16 @@ static int mos7840_chars_in_buffer(struct tty_struct *tty) unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s \n", " mos7840_chars_in_buffer:entering ..........."); + dbg("%s", " mos7840_chars_in_buffer:entering ..........."); if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return 0; } mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) { - dbg("%s \n", "mos7840_break:leaving ..........."); + dbg("%s", "mos7840_break:leaving ..........."); return 0; } @@ -1135,54 +1140,12 @@ static int mos7840_chars_in_buffer(struct tty_struct *tty) } -/************************************************************************ - * - * mos7840_block_until_tx_empty - * - * This function will block the close until one of the following: - * 1. TX count are 0 - * 2. The mos7840 has stopped - * 3. A timeout of 3 seconds without activity has expired - * - ************************************************************************/ -static void mos7840_block_until_tx_empty(struct tty_struct *tty, - struct moschip_port *mos7840_port) -{ - int timeout = HZ / 10; - int wait = 30; - int count; - - while (1) { - - count = mos7840_chars_in_buffer(tty); - - /* Check for Buffer status */ - if (count <= 0) - return; - - /* Block the thread for a while */ - interruptible_sleep_on_timeout(&mos7840_port->wait_chase, - timeout); - - /* No activity.. count down section */ - wait--; - if (wait == 0) { - dbg("%s - TIMEOUT", __func__); - return; - } else { - /* Reset timeout value back to seconds */ - wait = 30; - } - } -} - /***************************************************************************** * mos7840_close * this function is called by the tty driver when a port is closed *****************************************************************************/ -static void mos7840_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void mos7840_close(struct usb_serial_port *port) { struct usb_serial *serial; struct moschip_port *mos7840_port; @@ -1190,16 +1153,16 @@ static void mos7840_close(struct tty_struct *tty, int j; __u16 Data; - dbg("%s\n", "mos7840_close:entering..."); + dbg("%s", "mos7840_close:entering..."); if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed \n"); + dbg("%s", "Port Paranoia failed"); return; } serial = mos7840_get_usb_serial(port, __func__); if (!serial) { - dbg("%s", "Serial Paranoia failed \n"); + dbg("%s", "Serial Paranoia failed"); return; } @@ -1223,35 +1186,31 @@ static void mos7840_close(struct tty_struct *tty, } } - if (serial->dev) - /* flush and block until tx is empty */ - mos7840_block_until_tx_empty(tty, mos7840_port); - /* While closing port, shutdown all bulk read, write * * and interrupt read if they exists */ if (serial->dev) { if (mos7840_port->write_urb) { - dbg("%s", "Shutdown bulk write\n"); + dbg("%s", "Shutdown bulk write"); usb_kill_urb(mos7840_port->write_urb); } if (mos7840_port->read_urb) { - dbg("%s", "Shutdown bulk read\n"); + dbg("%s", "Shutdown bulk read"); usb_kill_urb(mos7840_port->read_urb); mos7840_port->read_urb_busy = false; } if ((&mos7840_port->control_urb)) { - dbg("%s", "Shutdown control read\n"); + dbg("%s", "Shutdown control read"); /*/ usb_kill_urb (mos7840_port->control_urb); */ } } /* if(mos7840_port->ctrl_buf != NULL) */ /* kfree(mos7840_port->ctrl_buf); */ port0->open_ports--; - dbg("mos7840_num_open_ports in close%d:in port%d\n", + dbg("mos7840_num_open_ports in close%d:in port%d", port0->open_ports, port->number); if (port0->open_ports == 0) { if (serial->port[0]->interrupt_in_urb) { - dbg("%s", "Shutdown interrupt_in_urb\n"); + dbg("%s", "Shutdown interrupt_in_urb"); usb_kill_urb(serial->port[0]->interrupt_in_urb); } } @@ -1271,7 +1230,7 @@ static void mos7840_close(struct tty_struct *tty, mos7840_port->open = 0; - dbg("%s \n", "Leaving ............"); + dbg("%s", "Leaving ............"); } /************************************************************************ @@ -1326,17 +1285,17 @@ static void mos7840_break(struct tty_struct *tty, int break_state) struct usb_serial *serial; struct moschip_port *mos7840_port; - dbg("%s \n", "Entering ..........."); - dbg("mos7840_break: Start\n"); + dbg("%s", "Entering ..........."); + dbg("mos7840_break: Start"); if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed \n"); + dbg("%s", "Port Paranoia failed"); return; } serial = mos7840_get_usb_serial(port, __func__); if (!serial) { - dbg("%s", "Serial Paranoia failed \n"); + dbg("%s", "Serial Paranoia failed"); return; } @@ -1356,7 +1315,7 @@ static void mos7840_break(struct tty_struct *tty, int break_state) /* FIXME: no locking on shadowLCR anywhere in driver */ mos7840_port->shadowLCR = data; - dbg("mcs7840_break mos7840_port->shadowLCR is %x\n", + dbg("mcs7840_break mos7840_port->shadowLCR is %x", mos7840_port->shadowLCR); mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, mos7840_port->shadowLCR); @@ -1380,17 +1339,17 @@ static int mos7840_write_room(struct tty_struct *tty) unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s \n", " mos7840_write_room:entering ..........."); + dbg("%s", " mos7840_write_room:entering ..........."); if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); - dbg("%s \n", " mos7840_write_room:leaving ..........."); + dbg("%s", "Invalid port"); + dbg("%s", " mos7840_write_room:leaving ..........."); return -1; } mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) { - dbg("%s \n", "mos7840_break:leaving ..........."); + dbg("%s", "mos7840_break:leaving ..........."); return -1; } @@ -1430,16 +1389,16 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, /* __u16 Data; */ const unsigned char *current_position = data; unsigned char *data1; - dbg("%s \n", "entering ..........."); - /* dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", + dbg("%s", "entering ..........."); + /* dbg("mos7840_write: mos7840_port->shadowLCR is %x", mos7840_port->shadowLCR); */ #ifdef NOTMOS7840 Data = 0x00; status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); mos7840_port->shadowLCR = Data; - dbg("mos7840_write: LINE_CONTROL_REGISTER is %x\n", Data); - dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", + dbg("mos7840_write: LINE_CONTROL_REGISTER is %x", Data); + dbg("mos7840_write: mos7840_port->shadowLCR is %x", mos7840_port->shadowLCR); /* Data = 0x03; */ @@ -1453,32 +1412,32 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ Data = 0x00; status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); - dbg("mos7840_write:DLL value is %x\n", Data); + dbg("mos7840_write:DLL value is %x", Data); Data = 0x0; status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); - dbg("mos7840_write:DLM value is %x\n", Data); + dbg("mos7840_write:DLM value is %x", Data); Data = Data & ~SERIAL_LCR_DLAB; - dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", + dbg("mos7840_write: mos7840_port->shadowLCR is %x", mos7840_port->shadowLCR); status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); #endif if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed \n"); + dbg("%s", "Port Paranoia failed"); return -1; } serial = port->serial; if (mos7840_serial_paranoia_check(serial, __func__)) { - dbg("%s", "Serial Paranoia failed \n"); + dbg("%s", "Serial Paranoia failed"); return -1; } mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) { - dbg("%s", "mos7840_port is NULL\n"); + dbg("%s", "mos7840_port is NULL"); return -1; } @@ -1490,7 +1449,7 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, if (!mos7840_port->busy[i]) { mos7840_port->busy[i] = 1; urb = mos7840_port->write_urb_pool[i]; - dbg("\nURB:%d", i); + dbg("URB:%d", i); break; } } @@ -1525,7 +1484,7 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, mos7840_bulk_out_data_callback, mos7840_port); data1 = urb->transfer_buffer; - dbg("\nbulkout endpoint is %d", port->bulk_out_endpointAddress); + dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress); /* send it down the pipe */ status = usb_submit_urb(urb, GFP_ATOMIC); @@ -1540,7 +1499,7 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, bytes_sent = transfer_size; mos7840_port->icount.tx += transfer_size; smp_wmb(); - dbg("mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx); + dbg("mos7840_port->icount.tx is %d:", mos7840_port->icount.tx); exit: return bytes_sent; @@ -1559,11 +1518,11 @@ static void mos7840_throttle(struct tty_struct *tty) int status; if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return; } - dbg("- port %d\n", port->number); + dbg("- port %d", port->number); mos7840_port = mos7840_get_port_private(port); @@ -1571,11 +1530,11 @@ static void mos7840_throttle(struct tty_struct *tty) return; if (!mos7840_port->open) { - dbg("%s\n", "port not opened"); + dbg("%s", "port not opened"); return; } - dbg("%s", "Entering .......... \n"); + dbg("%s", "Entering .........."); /* if we are implementing XON/XOFF, send the stop character */ if (I_IXOFF(tty)) { @@ -1609,7 +1568,7 @@ static void mos7840_unthrottle(struct tty_struct *tty) struct moschip_port *mos7840_port = mos7840_get_port_private(port); if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return; } @@ -1621,7 +1580,7 @@ static void mos7840_unthrottle(struct tty_struct *tty) return; } - dbg("%s", "Entering .......... \n"); + dbg("%s", "Entering .........."); /* if we are implementing XON/XOFF, send the start character */ if (I_IXOFF(tty)) { @@ -1706,7 +1665,7 @@ static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); if (status < 0) { - dbg("setting MODEM_CONTROL_REGISTER Failed\n"); + dbg("setting MODEM_CONTROL_REGISTER Failed"); return status; } @@ -1775,11 +1734,11 @@ static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, custom++; *divisor = custom; - dbg(" Baud %d = %d\n", baudrate, custom); + dbg(" Baud %d = %d", baudrate, custom); return 0; } - dbg("%s\n", " Baud calculation Failed..."); + dbg("%s", " Baud calculation Failed..."); return -1; #endif } @@ -1805,16 +1764,16 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, port = (struct usb_serial_port *)mos7840_port->port; if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return -1; } if (mos7840_serial_paranoia_check(port->serial, __func__)) { - dbg("%s", "Invalid Serial \n"); + dbg("%s", "Invalid Serial"); return -1; } - dbg("%s", "Entering .......... \n"); + dbg("%s", "Entering .........."); number = mos7840_port->port->number - mos7840_port->port->serial->minor; @@ -1830,7 +1789,7 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud\n"); + dbg("Writing spreg failed in set_serial_baud"); return -1; } #endif @@ -1843,7 +1802,7 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud\n"); + dbg("Writing spreg failed in set_serial_baud"); return -1; } #endif @@ -1858,14 +1817,14 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); if (status < 0) { - dbg("reading spreg failed in set_serial_baud\n"); + dbg("reading spreg failed in set_serial_baud"); return -1; } Data = (Data & 0x8f) | clk_sel_val; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud\n"); + dbg("Writing spreg failed in set_serial_baud"); return -1; } /* Calculate the Divisor */ @@ -1881,11 +1840,11 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, /* Write the divisor */ Data = (unsigned char)(divisor & 0xff); - dbg("set_serial_baud Value to write DLL is %x\n", Data); + dbg("set_serial_baud Value to write DLL is %x", Data); mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); Data = (unsigned char)((divisor & 0xff00) >> 8); - dbg("set_serial_baud Value to write DLM is %x\n", Data); + dbg("set_serial_baud Value to write DLM is %x", Data); mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); /* Disable access to divisor latch */ @@ -1923,12 +1882,12 @@ static void mos7840_change_port_settings(struct tty_struct *tty, port = (struct usb_serial_port *)mos7840_port->port; if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return; } if (mos7840_serial_paranoia_check(port->serial, __func__)) { - dbg("%s", "Invalid Serial \n"); + dbg("%s", "Invalid Serial"); return; } @@ -1941,7 +1900,7 @@ static void mos7840_change_port_settings(struct tty_struct *tty, return; } - dbg("%s", "Entering .......... \n"); + dbg("%s", "Entering .........."); lData = LCR_BITS_8; lStop = LCR_STOP_1; @@ -2001,7 +1960,7 @@ static void mos7840_change_port_settings(struct tty_struct *tty, ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); mos7840_port->shadowLCR |= (lData | lParity | lStop); - dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x\n", + dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x", mos7840_port->shadowLCR); /* Disable Interrupts */ Data = 0x00; @@ -2043,7 +2002,7 @@ static void mos7840_change_port_settings(struct tty_struct *tty, if (!baud) { /* pick a default, any default... */ - dbg("%s\n", "Picked default baud..."); + dbg("%s", "Picked default baud..."); baud = 9600; } @@ -2066,7 +2025,7 @@ static void mos7840_change_port_settings(struct tty_struct *tty, } wake_up(&mos7840_port->delta_msr_wait); mos7840_port->delta_msr_cond = 1; - dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x\n", + dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x", mos7840_port->shadowLCR); return; @@ -2086,16 +2045,16 @@ static void mos7840_set_termios(struct tty_struct *tty, unsigned int cflag; struct usb_serial *serial; struct moschip_port *mos7840_port; - dbg("mos7840_set_termios: START\n"); + dbg("mos7840_set_termios: START"); if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return; } serial = port->serial; if (mos7840_serial_paranoia_check(serial, __func__)) { - dbg("%s", "Invalid Serial \n"); + dbg("%s", "Invalid Serial"); return; } @@ -2109,7 +2068,7 @@ static void mos7840_set_termios(struct tty_struct *tty, return; } - dbg("%s\n", "setting termios - "); + dbg("%s", "setting termios - "); cflag = tty->termios->c_cflag; @@ -2124,7 +2083,7 @@ static void mos7840_set_termios(struct tty_struct *tty, mos7840_change_port_settings(tty, mos7840_port, old_termios); if (!mos7840_port->read_urb) { - dbg("%s", "URB KILLED !!!!!\n"); + dbg("%s", "URB KILLED !!!!!"); return; } @@ -2190,7 +2149,7 @@ static int mos7840_set_modem_info(struct moschip_port *mos7840_port, port = (struct usb_serial_port *)mos7840_port->port; if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return -1; } @@ -2235,7 +2194,7 @@ static int mos7840_set_modem_info(struct moschip_port *mos7840_port, status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); unlock_kernel(); if (status < 0) { - dbg("setting MODEM_CONTROL_REGISTER Failed\n"); + dbg("setting MODEM_CONTROL_REGISTER Failed"); return -1; } @@ -2320,7 +2279,7 @@ static int mos7840_ioctl(struct tty_struct *tty, struct file *file, int mosret = 0; if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port \n"); + dbg("%s", "Invalid port"); return -1; } @@ -2420,9 +2379,8 @@ static int mos7840_calc_num_ports(struct usb_serial *serial) { int mos7840_num_ports = 0; - dbg("numberofendpoints: %d \n", - (int)serial->interface->cur_altsetting->desc.bNumEndpoints); - dbg("numberofendpoints: %d \n", + dbg("numberofendpoints: cur %d, alt %d", + (int)serial->interface->cur_altsetting->desc.bNumEndpoints, (int)serial->interface->altsetting->desc.bNumEndpoints); if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) { mos7840_num_ports = serial->num_ports = 2; @@ -2431,7 +2389,7 @@ static int mos7840_calc_num_ports(struct usb_serial *serial) serial->num_bulk_out = 4; mos7840_num_ports = serial->num_ports = 4; } - + dbg ("mos7840_num_ports = %d", mos7840_num_ports); return mos7840_num_ports; } @@ -2446,22 +2404,24 @@ static int mos7840_startup(struct usb_serial *serial) int i, status; __u16 Data; - dbg("%s \n", " mos7840_startup :entering.........."); + dbg("%s", "mos7840_startup :Entering.........."); if (!serial) { - dbg("%s\n", "Invalid Handler"); + dbg("%s", "Invalid Handler"); return -1; } dev = serial->dev; - dbg("%s\n", "Entering..."); + dbg("%s", "Entering..."); + dbg ("mos7840_startup: serial = %p", serial); /* we set up the pointers to the endpoints in the mos7840_open * * function, as the structures aren't created yet. */ /* set up port private structures */ for (i = 0; i < serial->num_ports; ++i) { + dbg ("mos7840_startup: configuring port %d............", i); mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); if (mos7840_port == NULL) { dev_err(&dev->dev, "%s - Out of memory\n", __func__); @@ -2519,10 +2479,10 @@ static int mos7840_startup(struct usb_serial *serial) status = mos7840_get_reg_sync(serial->port[i], mos7840_port->ControlRegOffset, &Data); if (status < 0) { - dbg("Reading ControlReg failed status-0x%x\n", status); + dbg("Reading ControlReg failed status-0x%x", status); break; } else - dbg("ControlReg Reading success val is %x, status%d\n", + dbg("ControlReg Reading success val is %x, status%d", Data, status); Data |= 0x08; /* setting driver done bit */ Data |= 0x04; /* sp1_bit to have cts change reflect in @@ -2532,10 +2492,10 @@ static int mos7840_startup(struct usb_serial *serial) status = mos7840_set_reg_sync(serial->port[i], mos7840_port->ControlRegOffset, Data); if (status < 0) { - dbg("Writing ControlReg failed(rx_disable) status-0x%x\n", status); + dbg("Writing ControlReg failed(rx_disable) status-0x%x", status); break; } else - dbg("ControlReg Writing success(rx_disable) status%d\n", + dbg("ControlReg Writing success(rx_disable) status%d", status); /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 @@ -2544,48 +2504,48 @@ static int mos7840_startup(struct usb_serial *serial) status = mos7840_set_reg_sync(serial->port[i], (__u16) (mos7840_port->DcrRegOffset + 0), Data); if (status < 0) { - dbg("Writing DCR0 failed status-0x%x\n", status); + dbg("Writing DCR0 failed status-0x%x", status); break; } else - dbg("DCR0 Writing success status%d\n", status); + dbg("DCR0 Writing success status%d", status); Data = 0x05; status = mos7840_set_reg_sync(serial->port[i], (__u16) (mos7840_port->DcrRegOffset + 1), Data); if (status < 0) { - dbg("Writing DCR1 failed status-0x%x\n", status); + dbg("Writing DCR1 failed status-0x%x", status); break; } else - dbg("DCR1 Writing success status%d\n", status); + dbg("DCR1 Writing success status%d", status); Data = 0x24; status = mos7840_set_reg_sync(serial->port[i], (__u16) (mos7840_port->DcrRegOffset + 2), Data); if (status < 0) { - dbg("Writing DCR2 failed status-0x%x\n", status); + dbg("Writing DCR2 failed status-0x%x", status); break; } else - dbg("DCR2 Writing success status%d\n", status); + dbg("DCR2 Writing success status%d", status); /* write values in clkstart0x0 and clkmulti 0x20 */ Data = 0x0; status = mos7840_set_reg_sync(serial->port[i], CLK_START_VALUE_REGISTER, Data); if (status < 0) { - dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); + dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x", status); break; } else - dbg("CLK_START_VALUE_REGISTER Writing success status%d\n", status); + dbg("CLK_START_VALUE_REGISTER Writing success status%d", status); Data = 0x20; status = mos7840_set_reg_sync(serial->port[i], CLK_MULTI_REGISTER, Data); if (status < 0) { - dbg("Writing CLK_MULTI_REGISTER failed status-0x%x\n", + dbg("Writing CLK_MULTI_REGISTER failed status-0x%x", status); goto error; } else - dbg("CLK_MULTI_REGISTER Writing success status%d\n", + dbg("CLK_MULTI_REGISTER Writing success status%d", status); /* write value 0x0 to scratchpad register */ @@ -2593,11 +2553,11 @@ static int mos7840_startup(struct usb_serial *serial) status = mos7840_set_uart_reg(serial->port[i], SCRATCH_PAD_REGISTER, Data); if (status < 0) { - dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", + dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", status); break; } else - dbg("SCRATCH_PAD_REGISTER Writing success status%d\n", + dbg("SCRATCH_PAD_REGISTER Writing success status%d", status); /* Zero Length flag register */ @@ -2608,30 +2568,30 @@ static int mos7840_startup(struct usb_serial *serial) status = mos7840_set_reg_sync(serial->port[i], (__u16) (ZLP_REG1 + ((__u16)mos7840_port->port_num)), Data); - dbg("ZLIP offset%x\n", + dbg("ZLIP offset %x", (__u16) (ZLP_REG1 + ((__u16) mos7840_port->port_num))); if (status < 0) { - dbg("Writing ZLP_REG%d failed status-0x%x\n", + dbg("Writing ZLP_REG%d failed status-0x%x", i + 2, status); break; } else - dbg("ZLP_REG%d Writing success status%d\n", + dbg("ZLP_REG%d Writing success status%d", i + 2, status); } else { Data = 0xff; status = mos7840_set_reg_sync(serial->port[i], (__u16) (ZLP_REG1 + ((__u16)mos7840_port->port_num) - 0x1), Data); - dbg("ZLIP offset%x\n", + dbg("ZLIP offset %x", (__u16) (ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); if (status < 0) { - dbg("Writing ZLP_REG%d failed status-0x%x\n", + dbg("Writing ZLP_REG%d failed status-0x%x", i + 1, status); break; } else - dbg("ZLP_REG%d Writing success status%d\n", + dbg("ZLP_REG%d Writing success status%d", i + 1, status); } @@ -2645,15 +2605,16 @@ static int mos7840_startup(struct usb_serial *serial) goto error; } } + dbg ("mos7840_startup: all ports configured..........."); /* Zero Length flag enable */ Data = 0x0f; status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); if (status < 0) { - dbg("Writing ZLP_REG5 failed status-0x%x\n", status); + dbg("Writing ZLP_REG5 failed status-0x%x", status); goto error; } else - dbg("ZLP_REG5 Writing success status%d\n", status); + dbg("ZLP_REG5 Writing success status%d", status); /* setting configuration feature to one */ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), @@ -2673,19 +2634,19 @@ error: } /**************************************************************************** - * mos7840_shutdown + * mos7840_disconnect * This function is called whenever the device is removed from the usb bus. ****************************************************************************/ -static void mos7840_shutdown(struct usb_serial *serial) +static void mos7840_disconnect(struct usb_serial *serial) { int i; unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s \n", " shutdown :entering.........."); + dbg("%s", " disconnect :entering.........."); if (!serial) { - dbg("%s", "Invalid Handler \n"); + dbg("%s", "Invalid Handler"); return; } @@ -2702,14 +2663,45 @@ static void mos7840_shutdown(struct usb_serial *serial) mos7840_port->zombie = 1; spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); usb_kill_urb(mos7840_port->control_urb); + } + } + + dbg("%s", "Thank u :: "); + +} + +/**************************************************************************** + * mos7840_release + * This function is called when the usb_serial structure is freed. + ****************************************************************************/ + +static void mos7840_release(struct usb_serial *serial) +{ + int i; + struct moschip_port *mos7840_port; + dbg("%s", " release :entering.........."); + + if (!serial) { + dbg("%s", "Invalid Handler"); + return; + } + + /* check for the ports to be closed,close the ports and disconnect */ + + /* free private structure allocated for serial port * + * stop reads and writes on all ports */ + + for (i = 0; i < serial->num_ports; ++i) { + mos7840_port = mos7840_get_port_private(serial->port[i]); + dbg("mos7840_port %d = %p", i, mos7840_port); + if (mos7840_port) { kfree(mos7840_port->ctrl_buf); kfree(mos7840_port->dr); kfree(mos7840_port); } - mos7840_set_port_private(serial->port[i], NULL); } - dbg("%s\n", "Thank u :: "); + dbg("%s", "Thank u :: "); } @@ -2747,7 +2739,8 @@ static struct usb_serial_driver moschip7840_4port_device = { .tiocmget = mos7840_tiocmget, .tiocmset = mos7840_tiocmset, .attach = mos7840_startup, - .shutdown = mos7840_shutdown, + .disconnect = mos7840_disconnect, + .release = mos7840_release, .read_bulk_callback = mos7840_bulk_in_callback, .read_int_callback = mos7840_interrupt_callback, }; @@ -2760,7 +2753,7 @@ static int __init moschip7840_init(void) { int retval; - dbg("%s \n", " mos7840_init :entering.........."); + dbg("%s", " mos7840_init :entering.........."); /* Register with the usb serial */ retval = usb_serial_register(&moschip7840_4port_device); @@ -2768,14 +2761,14 @@ static int __init moschip7840_init(void) if (retval) goto failed_port_device_register; - dbg("%s\n", "Entring..."); + dbg("%s", "Entering..."); printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" DRIVER_DESC "\n"); /* Register with the usb */ retval = usb_register(&io_driver); if (retval == 0) { - dbg("%s\n", "Leaving..."); + dbg("%s", "Leaving..."); return 0; } usb_serial_deregister(&moschip7840_4port_device); @@ -2790,13 +2783,13 @@ failed_port_device_register: static void __exit moschip7840_exit(void) { - dbg("%s \n", " mos7840_exit :entering.........."); + dbg("%s", " mos7840_exit :entering.........."); usb_deregister(&io_driver); usb_serial_deregister(&moschip7840_4port_device); - dbg("%s\n", "Entring..."); + dbg("%s", "Entering..."); } module_init(moschip7840_init); diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c index bcdcbb822705..f5f3751a888c 100644 --- a/drivers/usb/serial/navman.c +++ b/drivers/usb/serial/navman.c @@ -98,8 +98,7 @@ static int navman_open(struct tty_struct *tty, return result; } -static void navman_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void navman_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c index df6539712726..56857ddbd70b 100644 --- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -66,14 +66,14 @@ static int debug; /* function prototypes */ static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void omninet_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static void omninet_close(struct usb_serial_port *port); static void omninet_read_bulk_callback(struct urb *urb); static void omninet_write_bulk_callback(struct urb *urb); static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int omninet_write_room(struct tty_struct *tty); -static void omninet_shutdown(struct usb_serial *serial); +static void omninet_disconnect(struct usb_serial *serial); +static void omninet_release(struct usb_serial *serial); static int omninet_attach(struct usb_serial *serial); static struct usb_device_id id_table[] = { @@ -109,7 +109,8 @@ static struct usb_serial_driver zyxel_omninet_device = { .write_room = omninet_write_room, .read_bulk_callback = omninet_read_bulk_callback, .write_bulk_callback = omninet_write_bulk_callback, - .shutdown = omninet_shutdown, + .disconnect = omninet_disconnect, + .release = omninet_release, }; @@ -189,8 +190,7 @@ static int omninet_open(struct tty_struct *tty, return result; } -static void omninet_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void omninet_close(struct usb_serial_port *port) { dbg("%s - port %d", __func__, port->number); usb_kill_urb(port->read_urb); @@ -347,13 +347,22 @@ static void omninet_write_bulk_callback(struct urb *urb) } -static void omninet_shutdown(struct usb_serial *serial) +static void omninet_disconnect(struct usb_serial *serial) { struct usb_serial_port *wport = serial->port[1]; - struct usb_serial_port *port = serial->port[0]; + dbg("%s", __func__); usb_kill_urb(wport->write_urb); +} + + +static void omninet_release(struct usb_serial *serial) +{ + struct usb_serial_port *port = serial->port[0]; + + dbg("%s", __func__); + kfree(usb_get_serial_port_data(port)); } diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index b500ad10b758..336bba79ad32 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -173,8 +173,7 @@ static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port, return result; } -static void opticon_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static void opticon_close(struct usb_serial_port *port) { struct opticon_private *priv = usb_get_serial_data(port->serial); @@ -464,7 +463,7 @@ error: return retval; } -static void opticon_shutdown(struct usb_serial *serial) +static void opticon_disconnect(struct usb_serial *serial) { struct opticon_private *priv = usb_get_serial_data(serial); @@ -472,9 +471,16 @@ static void opticon_shutdown(struct usb_serial *serial) usb_kill_urb(priv->bulk_read_urb); usb_free_urb(priv->bulk_read_urb); +} + +static void opticon_release(struct usb_serial *serial) +{ + struct opticon_private *priv = usb_get_serial_data(serial); + + dbg("%s", __func__); + kfree(priv->bulk_in_buffer); kfree(priv); - usb_set_serial_data(serial, NULL); } static int opticon_suspend(struct usb_interface *intf, pm_message_t message) @@ -525,7 +531,8 @@ static struct usb_serial_driver opticon_device = { .close = opticon_close, .write = opticon_write, .write_room = opticon_write_room, - .shutdown = opticon_shutdown, + .disconnect = opticon_disconnect, + .release = opticon_release, .throttle = opticon_throttle, .unthrottle = opticon_unthrottle, .ioctl = opticon_ioctl, diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 7817b82889ca..98262dd552bb 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -43,12 +43,16 @@ #include <linux/usb/serial.h> /* Function prototypes */ +static int option_probe(struct usb_serial *serial, + const struct usb_device_id *id); static int option_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void option_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static void option_close(struct usb_serial_port *port); +static void option_dtr_rts(struct usb_serial_port *port, int on); + static int option_startup(struct usb_serial *serial); -static void option_shutdown(struct usb_serial *serial); +static void option_disconnect(struct usb_serial *serial); +static void option_release(struct usb_serial *serial); static int option_write_room(struct tty_struct *tty); static void option_instat_callback(struct urb *urb); @@ -61,7 +65,7 @@ static void option_set_termios(struct tty_struct *tty, static int option_tiocmget(struct tty_struct *tty, struct file *file); static int option_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); -static int option_send_setup(struct tty_struct *tty, struct usb_serial_port *port); +static int option_send_setup(struct usb_serial_port *port); static int option_suspend(struct usb_serial *serial, pm_message_t message); static int option_resume(struct usb_serial *serial); @@ -201,9 +205,10 @@ static int option_resume(struct usb_serial *serial); #define NOVATELWIRELESS_PRODUCT_MC727 0x4100 #define NOVATELWIRELESS_PRODUCT_MC950D 0x4400 #define NOVATELWIRELESS_PRODUCT_U727 0x5010 +#define NOVATELWIRELESS_PRODUCT_MC760 0x6000 +#define NOVATELWIRELESS_PRODUCT_OVMC760 0x6002 /* FUTURE NOVATEL PRODUCTS */ -#define NOVATELWIRELESS_PRODUCT_EVDO_FULLSPEED 0X6000 #define NOVATELWIRELESS_PRODUCT_EVDO_HIGHSPEED 0X6001 #define NOVATELWIRELESS_PRODUCT_HSPA_FULLSPEED 0X7000 #define NOVATELWIRELESS_PRODUCT_HSPA_HIGHSPEED 0X7001 @@ -303,6 +308,19 @@ static int option_resume(struct usb_serial *serial); #define DLINK_VENDOR_ID 0x1186 #define DLINK_PRODUCT_DWM_652 0x3e04 +#define QISDA_VENDOR_ID 0x1da5 +#define QISDA_PRODUCT_H21_4512 0x4512 +#define QISDA_PRODUCT_H21_4523 0x4523 +#define QISDA_PRODUCT_H20_4515 0x4515 +#define QISDA_PRODUCT_H20_4519 0x4519 + + +/* TOSHIBA PRODUCTS */ +#define TOSHIBA_VENDOR_ID 0x0930 +#define TOSHIBA_PRODUCT_HSDPA_MINICARD 0x1302 + +#define ALINK_VENDOR_ID 0x1e0e +#define ALINK_PRODUCT_3GU 0x9200 static struct usb_device_id option_ids[] = { { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) }, @@ -421,7 +439,8 @@ static struct usb_device_id option_ids[] = { { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC950D) }, /* Novatel MC930D/MC950D */ { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC727) }, /* Novatel MC727/U727/USB727 */ { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U727) }, /* Novatel MC727/U727/USB727 */ - { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_FULLSPEED) }, /* Novatel EVDO product */ + { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC760) }, /* Novatel MC760/U760/USB760 */ + { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_OVMC760) }, /* Novatel Ovation MC760 */ { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_FULLSPEED) }, /* Novatel HSPA product */ { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_EMBEDDED_FULLSPEED) }, /* Novatel EVDO Embedded product */ { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_FULLSPEED) }, /* Novatel HSPA Embedded product */ @@ -521,7 +540,13 @@ static struct usb_device_id option_ids[] = { { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH) }, { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_H10) }, { USB_DEVICE(DLINK_VENDOR_ID, DLINK_PRODUCT_DWM_652) }, - { USB_DEVICE(0x1da5, 0x4515) }, /* BenQ H20 */ + { USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H21_4512) }, + { USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H21_4523) }, + { USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H20_4515) }, + { USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H20_4519) }, + { USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_HSDPA_MINICARD ) }, /* Toshiba 3G HSDPA == Novatel Expedite EU870D MiniCard */ + { USB_DEVICE(ALINK_VENDOR_ID, 0x9000) }, + { USB_DEVICE_AND_INTERFACE_INFO(ALINK_VENDOR_ID, ALINK_PRODUCT_3GU, 0xff, 0xff, 0xff) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); @@ -549,8 +574,10 @@ static struct usb_serial_driver option_1port_device = { .usb_driver = &option_driver, .id_table = option_ids, .num_ports = 1, + .probe = option_probe, .open = option_open, .close = option_close, + .dtr_rts = option_dtr_rts, .write = option_write, .write_room = option_write_room, .chars_in_buffer = option_chars_in_buffer, @@ -558,7 +585,8 @@ static struct usb_serial_driver option_1port_device = { .tiocmget = option_tiocmget, .tiocmset = option_tiocmset, .attach = option_startup, - .shutdown = option_shutdown, + .disconnect = option_disconnect, + .release = option_release, .read_int_callback = option_instat_callback, .suspend = option_suspend, .resume = option_resume, @@ -624,13 +652,25 @@ static void __exit option_exit(void) module_init(option_init); module_exit(option_exit); +static int option_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + /* D-Link DWM 652 still exposes CD-Rom emulation interface in modem mode */ + if (serial->dev->descriptor.idVendor == DLINK_VENDOR_ID && + serial->dev->descriptor.idProduct == DLINK_PRODUCT_DWM_652 && + serial->interface->cur_altsetting->desc.bInterfaceClass == 0x8) + return -ENODEV; + + return 0; +} + static void option_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { dbg("%s", __func__); /* Doesn't support option setting */ tty_termios_copy_hw(tty->termios, old_termios); - option_send_setup(tty, port); + option_send_setup(port); } static int option_tiocmget(struct tty_struct *tty, struct file *file) @@ -669,7 +709,7 @@ static int option_tiocmset(struct tty_struct *tty, struct file *file, portdata->rts_state = 0; if (clear & TIOCM_DTR) portdata->dtr_state = 0; - return option_send_setup(tty, port); + return option_send_setup(port); } /* Write */ @@ -708,7 +748,6 @@ static int option_write(struct tty_struct *tty, struct usb_serial_port *port, memcpy(this_urb->transfer_buffer, buf, todo); this_urb->transfer_buffer_length = todo; - this_urb->dev = port->serial->dev; err = usb_submit_urb(this_urb, GFP_ATOMIC); if (err) { dbg("usb_submit_urb %p (write bulk) failed " @@ -836,7 +875,6 @@ static void option_instat_callback(struct urb *urb) /* Resubmit urb so we continue receiving IRQ data */ if (status != -ESHUTDOWN && status != -ENOENT) { - urb->dev = serial->dev; err = usb_submit_urb(urb, GFP_ATOMIC); if (err) dbg("%s: resubmit intr urb failed. (%d)", @@ -897,27 +935,11 @@ static int option_open(struct tty_struct *tty, dbg("%s", __func__); - /* Set some sane defaults */ - portdata->rts_state = 1; - portdata->dtr_state = 1; - - /* Reset low level data toggle and start reading from endpoints */ + /* Start reading from the IN endpoint */ for (i = 0; i < N_IN_URB; i++) { urb = portdata->in_urbs[i]; if (!urb) continue; - if (urb->dev != serial->dev) { - dbg("%s: dev %p != %p", __func__, - urb->dev, serial->dev); - continue; - } - - /* - * make sure endpoint data toggle is synchronized with the - * device - */ - usb_clear_halt(urb->dev, urb->pipe); - err = usb_submit_urb(urb, GFP_KERNEL); if (err) { dbg("%s: submit urb %d failed (%d) %d", @@ -926,47 +948,43 @@ static int option_open(struct tty_struct *tty, } } - /* Reset low level data toggle on out endpoints */ - for (i = 0; i < N_OUT_URB; i++) { - urb = portdata->out_urbs[i]; - if (!urb) - continue; - urb->dev = serial->dev; - /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), - usb_pipeout(urb->pipe), 0); */ - } - - option_send_setup(tty, port); + option_send_setup(port); return 0; } -static void option_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void option_dtr_rts(struct usb_serial_port *port, int on) { - int i; struct usb_serial *serial = port->serial; struct option_port_private *portdata; dbg("%s", __func__); portdata = usb_get_serial_port_data(port); + mutex_lock(&serial->disc_mutex); + portdata->rts_state = on; + portdata->dtr_state = on; + if (serial->dev) + option_send_setup(port); + mutex_unlock(&serial->disc_mutex); +} - portdata->rts_state = 0; - portdata->dtr_state = 0; - if (serial->dev) { - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) - option_send_setup(tty, port); - mutex_unlock(&serial->disc_mutex); +static void option_close(struct usb_serial_port *port) +{ + int i; + struct usb_serial *serial = port->serial; + struct option_port_private *portdata; + dbg("%s", __func__); + portdata = usb_get_serial_port_data(port); + + if (serial->dev) { /* Stop reading/writing urbs */ for (i = 0; i < N_IN_URB; i++) usb_kill_urb(portdata->in_urbs[i]); for (i = 0; i < N_OUT_URB; i++) usb_kill_urb(portdata->out_urbs[i]); } - tty_port_tty_set(&port->port, NULL); } /* Helper functions used by option_setup_urbs */ @@ -1032,28 +1050,24 @@ static void option_setup_urbs(struct usb_serial *serial) * This is exactly the same as SET_CONTROL_LINE_STATE from the PSTN * CDC. */ -static int option_send_setup(struct tty_struct *tty, - struct usb_serial_port *port) +static int option_send_setup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct option_port_private *portdata; int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber; + int val = 0; dbg("%s", __func__); portdata = usb_get_serial_port_data(port); - if (tty) { - int val = 0; - if (portdata->dtr_state) - val |= 0x01; - if (portdata->rts_state) - val |= 0x02; + if (portdata->dtr_state) + val |= 0x01; + if (portdata->rts_state) + val |= 0x02; - return usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - 0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT); - } - return 0; + return usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), + 0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT); } static int option_startup(struct usb_serial *serial) @@ -1129,7 +1143,14 @@ static void stop_read_write_urbs(struct usb_serial *serial) } } -static void option_shutdown(struct usb_serial *serial) +static void option_disconnect(struct usb_serial *serial) +{ + dbg("%s", __func__); + + stop_read_write_urbs(serial); +} + +static void option_release(struct usb_serial *serial) { int i, j; struct usb_serial_port *port; @@ -1137,8 +1158,6 @@ static void option_shutdown(struct usb_serial *serial) dbg("%s", __func__); - stop_read_write_urbs(serial); - /* Now free them */ for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; @@ -1191,7 +1210,6 @@ static int option_resume(struct usb_serial *serial) dbg("%s: No interrupt URB for port %d\n", __func__, i); continue; } - port->interrupt_in_urb->dev = serial->dev; err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO); dbg("Submitted interrupt URB for port %d (result %d)", i, err); if (err < 0) { diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index ba551f00f16f..3cece27325e7 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -143,8 +143,7 @@ struct oti6858_control_pkt { /* function prototypes */ static int oti6858_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void oti6858_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void oti6858_close(struct usb_serial_port *port); static void oti6858_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int oti6858_ioctl(struct tty_struct *tty, struct file *file, @@ -160,7 +159,7 @@ static int oti6858_tiocmget(struct tty_struct *tty, struct file *file); static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int oti6858_startup(struct usb_serial *serial); -static void oti6858_shutdown(struct usb_serial *serial); +static void oti6858_release(struct usb_serial *serial); /* functions operating on buffers */ static struct oti6858_buf *oti6858_buf_alloc(unsigned int size); @@ -195,7 +194,7 @@ static struct usb_serial_driver oti6858_device = { .write_room = oti6858_write_room, .chars_in_buffer = oti6858_chars_in_buffer, .attach = oti6858_startup, - .shutdown = oti6858_shutdown, + .release = oti6858_release, }; struct oti6858_private { @@ -622,67 +621,30 @@ static int oti6858_open(struct tty_struct *tty, if (result != 0) { dev_err(&port->dev, "%s(): usb_submit_urb() failed" " with error %d\n", __func__, result); - oti6858_close(tty, port, NULL); + oti6858_close(port); return -EPROTO; } /* setup termios */ if (tty) oti6858_set_termios(tty, port, &tmp_termios); - + port->port.drain_delay = 256; /* FIXME: check the FIFO length */ return 0; } -static void oti6858_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void oti6858_close(struct usb_serial_port *port) { struct oti6858_private *priv = usb_get_serial_port_data(port); unsigned long flags; - long timeout; - wait_queue_t wait; dbg("%s(port = %d)", __func__, port->number); - /* wait for data to drain from the buffer */ spin_lock_irqsave(&priv->lock, flags); - timeout = 30 * HZ; /* PL2303_CLOSING_WAIT */ - init_waitqueue_entry(&wait, current); - add_wait_queue(&tty->write_wait, &wait); - dbg("%s(): entering wait loop", __func__); - for (;;) { - set_current_state(TASK_INTERRUPTIBLE); - if (oti6858_buf_data_avail(priv->buf) == 0 - || timeout == 0 || signal_pending(current) - || port->serial->disconnected) - break; - spin_unlock_irqrestore(&priv->lock, flags); - timeout = schedule_timeout(timeout); - spin_lock_irqsave(&priv->lock, flags); - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&tty->write_wait, &wait); - dbg("%s(): after wait loop", __func__); - /* clear out any remaining data in the buffer */ oti6858_buf_clear(priv->buf); spin_unlock_irqrestore(&priv->lock, flags); - /* wait for characters to drain from the device */ - /* (this is long enough for the entire 256 byte */ - /* pl2303 hardware buffer to drain with no flow */ - /* control for data rates of 1200 bps or more, */ - /* for lower rates we should really know how much */ - /* data is in the buffer to compute a delay */ - /* that is not unnecessarily long) */ - /* FIXME - bps = tty_get_baud_rate(tty); - if (bps > 1200) - timeout = max((HZ*2560)/bps,HZ/10); - else - */ - timeout = 2*HZ; - schedule_timeout_interruptible(timeout); - dbg("%s(): after schedule_timeout_interruptible()", __func__); + dbg("%s(): after buf_clear()", __func__); /* cancel scheduled setup */ cancel_delayed_work(&priv->delayed_setup_work); @@ -694,15 +656,6 @@ static void oti6858_close(struct tty_struct *tty, usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); usb_kill_urb(port->interrupt_in_urb); - - /* - if (tty && (tty->termios->c_cflag) & HUPCL) { - // drop DTR and RTS - spin_lock_irqsave(&priv->lock, flags); - priv->pending_setup.control &= ~CONTROL_MASK; - spin_unlock_irqrestore(&priv->lock, flags); - } - */ } static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, @@ -829,7 +782,7 @@ static int oti6858_ioctl(struct tty_struct *tty, struct file *file, } -static void oti6858_shutdown(struct usb_serial *serial) +static void oti6858_release(struct usb_serial *serial) { struct oti6858_private *priv; int i; @@ -841,7 +794,6 @@ static void oti6858_shutdown(struct usb_serial *serial) if (priv) { oti6858_buf_free(priv->buf); kfree(priv); - usb_set_serial_port_data(serial->port[i], NULL); } } } diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 751a533a4347..7d15bfa7c2db 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -94,6 +94,7 @@ static struct usb_device_id id_table [] = { { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, + { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, { } /* Terminating entry */ }; @@ -652,69 +653,41 @@ static void pl2303_set_termios(struct tty_struct *tty, kfree(buf); } -static void pl2303_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void pl2303_dtr_rts(struct usb_serial_port *port, int on) +{ + struct pl2303_private *priv = usb_get_serial_port_data(port); + unsigned long flags; + u8 control; + + spin_lock_irqsave(&priv->lock, flags); + /* Change DTR and RTS */ + if (on) + priv->line_control |= (CONTROL_DTR | CONTROL_RTS); + else + priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); + control = priv->line_control; + spin_unlock_irqrestore(&priv->lock, flags); + set_control_lines(port->serial->dev, control); +} + +static void pl2303_close(struct usb_serial_port *port) { struct pl2303_private *priv = usb_get_serial_port_data(port); unsigned long flags; - unsigned int c_cflag; - int bps; - long timeout; - wait_queue_t wait; dbg("%s - port %d", __func__, port->number); - /* wait for data to drain from the buffer */ spin_lock_irqsave(&priv->lock, flags); - timeout = PL2303_CLOSING_WAIT; - init_waitqueue_entry(&wait, current); - add_wait_queue(&tty->write_wait, &wait); - for (;;) { - set_current_state(TASK_INTERRUPTIBLE); - if (pl2303_buf_data_avail(priv->buf) == 0 || - timeout == 0 || signal_pending(current) || - port->serial->disconnected) - break; - spin_unlock_irqrestore(&priv->lock, flags); - timeout = schedule_timeout(timeout); - spin_lock_irqsave(&priv->lock, flags); - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&tty->write_wait, &wait); /* clear out any remaining data in the buffer */ pl2303_buf_clear(priv->buf); spin_unlock_irqrestore(&priv->lock, flags); - /* wait for characters to drain from the device */ - /* (this is long enough for the entire 256 byte */ - /* pl2303 hardware buffer to drain with no flow */ - /* control for data rates of 1200 bps or more, */ - /* for lower rates we should really know how much */ - /* data is in the buffer to compute a delay */ - /* that is not unnecessarily long) */ - bps = tty_get_baud_rate(tty); - if (bps > 1200) - timeout = max((HZ*2560)/bps, HZ/10); - else - timeout = 2*HZ; - schedule_timeout_interruptible(timeout); - /* shutdown our urbs */ dbg("%s - shutting down urbs", __func__); usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); usb_kill_urb(port->interrupt_in_urb); - if (tty) { - c_cflag = tty->termios->c_cflag; - if (c_cflag & HUPCL) { - /* drop DTR and RTS */ - spin_lock_irqsave(&priv->lock, flags); - priv->line_control = 0; - spin_unlock_irqrestore(&priv->lock, flags); - set_control_lines(port->serial->dev, 0); - } - } } static int pl2303_open(struct tty_struct *tty, @@ -748,7 +721,7 @@ static int pl2303_open(struct tty_struct *tty, if (result) { dev_err(&port->dev, "%s - failed submitting read urb," " error %d\n", __func__, result); - pl2303_close(tty, port, NULL); + pl2303_close(port); return -EPROTO; } @@ -758,9 +731,10 @@ static int pl2303_open(struct tty_struct *tty, if (result) { dev_err(&port->dev, "%s - failed submitting interrupt urb," " error %d\n", __func__, result); - pl2303_close(tty, port, NULL); + pl2303_close(port); return -EPROTO; } + port->port.drain_delay = 256; return 0; } @@ -821,6 +795,14 @@ static int pl2303_tiocmget(struct tty_struct *tty, struct file *file) return result; } +static int pl2303_carrier_raised(struct usb_serial_port *port) +{ + struct pl2303_private *priv = usb_get_serial_port_data(port); + if (priv->line_status & UART_DCD) + return 1; + return 0; +} + static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) { struct pl2303_private *priv = usb_get_serial_port_data(port); @@ -897,7 +879,7 @@ static void pl2303_break_ctl(struct tty_struct *tty, int break_state) dbg("%s - error sending break = %d", __func__, result); } -static void pl2303_shutdown(struct usb_serial *serial) +static void pl2303_release(struct usb_serial *serial) { int i; struct pl2303_private *priv; @@ -909,7 +891,6 @@ static void pl2303_shutdown(struct usb_serial *serial) if (priv) { pl2303_buf_free(priv->buf); kfree(priv); - usb_set_serial_port_data(serial->port[i], NULL); } } } @@ -946,6 +927,8 @@ static void pl2303_update_line_status(struct usb_serial_port *port, spin_lock_irqsave(&priv->lock, flags); priv->line_status = data[status_idx]; spin_unlock_irqrestore(&priv->lock, flags); + if (priv->line_status & UART_BREAK_ERROR) + usb_serial_handle_break(port); wake_up_interruptible(&priv->delta_msr_wait); } @@ -989,18 +972,46 @@ exit: __func__, retval); } +static void pl2303_push_data(struct tty_struct *tty, + struct usb_serial_port *port, struct urb *urb, + u8 line_status) +{ + unsigned char *data = urb->transfer_buffer; + /* get tty_flag from status */ + char tty_flag = TTY_NORMAL; + /* break takes precedence over parity, */ + /* which takes precedence over framing errors */ + if (line_status & UART_BREAK_ERROR) + tty_flag = TTY_BREAK; + else if (line_status & UART_PARITY_ERROR) + tty_flag = TTY_PARITY; + else if (line_status & UART_FRAME_ERROR) + tty_flag = TTY_FRAME; + dbg("%s - tty_flag = %d", __func__, tty_flag); + + tty_buffer_request_room(tty, urb->actual_length + 1); + /* overrun is special, not associated with a char */ + if (line_status & UART_OVERRUN_ERROR) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + if (port->console && port->sysrq) { + int i; + for (i = 0; i < urb->actual_length; ++i) + if (!usb_serial_handle_sysrq_char(tty, port, data[i])) + tty_insert_flip_char(tty, data[i], tty_flag); + } else + tty_insert_flip_string(tty, data, urb->actual_length); + tty_flip_buffer_push(tty); +} + static void pl2303_read_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct pl2303_private *priv = usb_get_serial_port_data(port); struct tty_struct *tty; - unsigned char *data = urb->transfer_buffer; unsigned long flags; - int i; int result; int status = urb->status; u8 line_status; - char tty_flag; dbg("%s - port %d", __func__, port->number); @@ -1028,10 +1039,7 @@ static void pl2303_read_bulk_callback(struct urb *urb) } usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - - /* get tty_flag from status */ - tty_flag = TTY_NORMAL; + urb->actual_length, urb->transfer_buffer); spin_lock_irqsave(&priv->lock, flags); line_status = priv->line_status; @@ -1039,25 +1047,9 @@ static void pl2303_read_bulk_callback(struct urb *urb) spin_unlock_irqrestore(&priv->lock, flags); wake_up_interruptible(&priv->delta_msr_wait); - /* break takes precedence over parity, */ - /* which takes precedence over framing errors */ - if (line_status & UART_BREAK_ERROR) - tty_flag = TTY_BREAK; - else if (line_status & UART_PARITY_ERROR) - tty_flag = TTY_PARITY; - else if (line_status & UART_FRAME_ERROR) - tty_flag = TTY_FRAME; - dbg("%s - tty_flag = %d", __func__, tty_flag); - tty = tty_port_tty_get(&port->port); if (tty && urb->actual_length) { - tty_buffer_request_room(tty, urb->actual_length + 1); - /* overrun is special, not associated with a char */ - if (line_status & UART_OVERRUN_ERROR) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - for (i = 0; i < urb->actual_length; ++i) - tty_insert_flip_char(tty, data[i], tty_flag); - tty_flip_buffer_push(tty); + pl2303_push_data(tty, port, urb, line_status); } tty_kref_put(tty); /* Schedule the next read _if_ we are still open */ @@ -1125,6 +1117,8 @@ static struct usb_serial_driver pl2303_device = { .num_ports = 1, .open = pl2303_open, .close = pl2303_close, + .dtr_rts = pl2303_dtr_rts, + .carrier_raised = pl2303_carrier_raised, .write = pl2303_write, .ioctl = pl2303_ioctl, .break_ctl = pl2303_break_ctl, @@ -1137,7 +1131,7 @@ static struct usb_serial_driver pl2303_device = { .write_room = pl2303_write_room, .chars_in_buffer = pl2303_chars_in_buffer, .attach = pl2303_startup, - .shutdown = pl2303_shutdown, + .release = pl2303_release, }; static int __init pl2303_init(void) diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h index 1d7a22e3a9fd..12aac7d2462d 100644 --- a/drivers/usb/serial/pl2303.h +++ b/drivers/usb/serial/pl2303.h @@ -122,3 +122,7 @@ /* Hewlett-Packard LD220-HP POS Pole Display */ #define HP_VENDOR_ID 0x03f0 #define HP_LD220_PRODUCT_ID 0x3524 + +/* Cressi Edy (diving computer) PC interface */ +#define CRESSI_VENDOR_ID 0x04b8 +#define CRESSI_EDY_PRODUCT_ID 0x0521 diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 913225c61610..f48d05e0acc1 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -1,7 +1,10 @@ /* USB Driver for Sierra Wireless - Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com> + Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>, + + Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer + <linux@sierrawireless.com> IMPORTANT DISCLAIMER: This driver is not commercially supported by Sierra Wireless. Use at your own risk. @@ -14,8 +17,8 @@ Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org> */ -#define DRIVER_VERSION "v.1.3.3" -#define DRIVER_AUTHOR "Kevin Lloyd <klloyd@sierrawireless.com>" +#define DRIVER_VERSION "v.1.3.7" +#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer" #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" #include <linux/kernel.h> @@ -26,23 +29,32 @@ #include <linux/module.h> #include <linux/usb.h> #include <linux/usb/serial.h> -#include <linux/usb/ch9.h> #define SWIMS_USB_REQUEST_SetPower 0x00 #define SWIMS_USB_REQUEST_SetNmea 0x07 -/* per port private data */ -#define N_IN_URB 4 -#define N_OUT_URB 4 +#define N_IN_URB 8 +#define N_OUT_URB 64 #define IN_BUFLEN 4096 +#define MAX_TRANSFER (PAGE_SIZE - 512) +/* MAX_TRANSFER is chosen so that the VM is not stressed by + allocations > PAGE_SIZE and the number of packets in a page + is an integer 512 is the largest possible packet on EHCI */ + static int debug; static int nmea; +/* Used in interface blacklisting */ +struct sierra_iface_info { + const u32 infolen; /* number of interface numbers on blacklist */ + const u8 *ifaceinfo; /* pointer to the array holding the numbers */ +}; + static int sierra_set_power_state(struct usb_device *udev, __u16 swiState) { int result; - dev_dbg(&udev->dev, "%s", __func__); + dev_dbg(&udev->dev, "%s\n", __func__); result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), SWIMS_USB_REQUEST_SetPower, /* __u8 request */ USB_TYPE_VENDOR, /* __u8 request type */ @@ -57,7 +69,7 @@ static int sierra_set_power_state(struct usb_device *udev, __u16 swiState) static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) { int result; - dev_dbg(&udev->dev, "%s", __func__); + dev_dbg(&udev->dev, "%s\n", __func__); result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), SWIMS_USB_REQUEST_SetNmea, /* __u8 request */ USB_TYPE_VENDOR, /* __u8 request type */ @@ -71,18 +83,39 @@ static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) static int sierra_calc_num_ports(struct usb_serial *serial) { - int result; - int *num_ports = usb_get_serial_data(serial); - dev_dbg(&serial->dev->dev, "%s", __func__); + int num_ports = 0; + u8 ifnum, numendpoints; - result = *num_ports; + dev_dbg(&serial->dev->dev, "%s\n", __func__); - if (result) { - kfree(num_ports); - usb_set_serial_data(serial, NULL); - } + ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; + numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints; - return result; + /* Dummy interface present on some SKUs should be ignored */ + if (ifnum == 0x99) + num_ports = 0; + else if (numendpoints <= 3) + num_ports = 1; + else + num_ports = (numendpoints-1)/2; + return num_ports; +} + +static int is_blacklisted(const u8 ifnum, + const struct sierra_iface_info *blacklist) +{ + const u8 *info; + int i; + + if (blacklist) { + info = blacklist->ifaceinfo; + + for (i = 0; i < blacklist->infolen; i++) { + if (info[i] == ifnum) + return 1; + } + } + return 0; } static int sierra_calc_interface(struct usb_serial *serial) @@ -90,7 +123,7 @@ static int sierra_calc_interface(struct usb_serial *serial) int interface; struct usb_interface *p_interface; struct usb_host_interface *p_host_interface; - dev_dbg(&serial->dev->dev, "%s", __func__); + dev_dbg(&serial->dev->dev, "%s\n", __func__); /* Get the interface structure pointer from the serial struct */ p_interface = serial->interface; @@ -111,23 +144,12 @@ static int sierra_probe(struct usb_serial *serial, { int result = 0; struct usb_device *udev; - int *num_ports; u8 ifnum; - u8 numendpoints; - - dev_dbg(&serial->dev->dev, "%s", __func__); - num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL); - if (!num_ports) - return -ENOMEM; - - ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; - numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints; udev = serial->dev; + dev_dbg(&udev->dev, "%s\n", __func__); - /* Figure out the interface number from the serial structure */ ifnum = sierra_calc_interface(serial); - /* * If this interface supports more than 1 alternate * select the 2nd one @@ -139,58 +161,77 @@ static int sierra_probe(struct usb_serial *serial, usb_set_interface(udev, ifnum, 1); } - /* Dummy interface present on some SKUs should be ignored */ - if (ifnum == 0x99) - *num_ports = 0; - else if (numendpoints <= 3) - *num_ports = 1; - else - *num_ports = (numendpoints-1)/2; + /* ifnum could have changed - by calling usb_set_interface */ + ifnum = sierra_calc_interface(serial); - /* - * save off our num_ports info so that we can use it in the - * calc_num_ports callback - */ - usb_set_serial_data(serial, (void *)num_ports); + if (is_blacklisted(ifnum, + (struct sierra_iface_info *)id->driver_info)) { + dev_dbg(&serial->dev->dev, + "Ignoring blacklisted interface #%d\n", ifnum); + return -ENODEV; + } return result; } +static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 }; +static const struct sierra_iface_info direct_ip_interface_blacklist = { + .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces), + .ifaceinfo = direct_ip_non_serial_ifaces, +}; + static struct usb_device_id id_table [] = { + { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ + { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */ + { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */ + { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */ { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */ { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */ - { USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */ { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */ - { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */ { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */ + { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */ + { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */ + { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */ { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */ { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */ + { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */ - /* Sierra Wireless C597 */ + /* Sierra Wireless C597 */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, - /* Sierra Wireless Device */ + /* Sierra Wireless T598 */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) }, - { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */ - { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */ - { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */ + { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */ + { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */ + { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */ + { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */ { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */ - { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */ { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */ + { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */ + { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */ + { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */ + { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */ { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */ - { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */ + { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */ { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */ - { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */ + { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */ { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */ { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */ + { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */ { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */ { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */ + { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */ + { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */ + { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */ + { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */ { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */ { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */ - { USB_DEVICE(0x1199, 0x683C) }, /* Sierra Wireless MC8790 */ - { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8790 */ - { USB_DEVICE(0x1199, 0x683E) }, /* Sierra Wireless MC8790 */ + /* Sierra Wireless MC8790, MC8791, MC8792 Composite */ + { USB_DEVICE(0x1199, 0x683C) }, + { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */ + /* Sierra Wireless MC8790, MC8791, MC8792 */ + { USB_DEVICE(0x1199, 0x683E) }, { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */ { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */ { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */ @@ -201,15 +242,16 @@ static struct usb_device_id id_table [] = { { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ /* Sierra Wireless C885 */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, - /* Sierra Wireless Device */ + /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)}, - /* Sierra Wireless Device */ + /* Sierra Wireless C22/C33 */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)}, - /* Sierra Wireless Device */ + /* Sierra Wireless HSPA Non-Composite Device */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, - - { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ - { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ + { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */ + { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */ + .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist + }, { } }; @@ -229,7 +271,6 @@ struct sierra_port_private { /* Input endpoints and buffers for this port */ struct urb *in_urbs[N_IN_URB]; - char *in_buffer[N_IN_URB]; /* Settings for the port */ int rts_state; /* Handshaking pins (outputs) */ @@ -240,66 +281,59 @@ struct sierra_port_private { int ri_state; }; -static int sierra_send_setup(struct tty_struct *tty, - struct usb_serial_port *port) +static int sierra_send_setup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct sierra_port_private *portdata; __u16 interface = 0; + int val = 0; - dev_dbg(&port->dev, "%s", __func__); + dev_dbg(&port->dev, "%s\n", __func__); portdata = usb_get_serial_port_data(port); - if (tty) { - int val = 0; - if (portdata->dtr_state) - val |= 0x01; - if (portdata->rts_state) - val |= 0x02; - - /* If composite device then properly report interface */ - if (serial->num_ports == 1) { - interface = sierra_calc_interface(serial); - - /* Control message is sent only to interfaces with - * interrupt_in endpoints - */ - if (port->interrupt_in_urb) { - /* send control message */ - return usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - 0x22, 0x21, val, interface, - NULL, 0, USB_CTRL_SET_TIMEOUT); - } - } - - /* Otherwise the need to do non-composite mapping */ - else { - if (port->bulk_out_endpointAddress == 2) - interface = 0; - else if (port->bulk_out_endpointAddress == 4) - interface = 1; - else if (port->bulk_out_endpointAddress == 5) - interface = 2; + if (portdata->dtr_state) + val |= 0x01; + if (portdata->rts_state) + val |= 0x02; + /* If composite device then properly report interface */ + if (serial->num_ports == 1) { + interface = sierra_calc_interface(serial); + /* Control message is sent only to interfaces with + * interrupt_in endpoints + */ + if (port->interrupt_in_urb) { + /* send control message */ return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT); - } } + /* Otherwise the need to do non-composite mapping */ + else { + if (port->bulk_out_endpointAddress == 2) + interface = 0; + else if (port->bulk_out_endpointAddress == 4) + interface = 1; + else if (port->bulk_out_endpointAddress == 5) + interface = 2; + return usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), + 0x22, 0x21, val, interface, + NULL, 0, USB_CTRL_SET_TIMEOUT); + } return 0; } static void sierra_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { - dev_dbg(&port->dev, "%s", __func__); + dev_dbg(&port->dev, "%s\n", __func__); tty_termios_copy_hw(tty->termios, old_termios); - sierra_send_setup(tty, port); + sierra_send_setup(port); } static int sierra_tiocmget(struct tty_struct *tty, struct file *file) @@ -308,7 +342,7 @@ static int sierra_tiocmget(struct tty_struct *tty, struct file *file) unsigned int value; struct sierra_port_private *portdata; - dev_dbg(&port->dev, "%s", __func__); + dev_dbg(&port->dev, "%s\n", __func__); portdata = usb_get_serial_port_data(port); value = ((portdata->rts_state) ? TIOCM_RTS : 0) | @@ -338,7 +372,18 @@ static int sierra_tiocmset(struct tty_struct *tty, struct file *file, portdata->rts_state = 0; if (clear & TIOCM_DTR) portdata->dtr_state = 0; - return sierra_send_setup(tty, port); + return sierra_send_setup(port); +} + +static void sierra_release_urb(struct urb *urb) +{ + struct usb_serial_port *port; + if (urb) { + port = urb->context; + dev_dbg(&port->dev, "%s: %p\n", __func__, urb); + kfree(urb->transfer_buffer); + usb_free_urb(urb); + } } static void sierra_outdat_callback(struct urb *urb) @@ -348,14 +393,14 @@ static void sierra_outdat_callback(struct urb *urb) int status = urb->status; unsigned long flags; - dev_dbg(&port->dev, "%s - port %d", __func__, port->number); + dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); /* free up the transfer buffer, as usb_free_urb() does not do this */ kfree(urb->transfer_buffer); if (status) dev_dbg(&port->dev, "%s - nonzero write bulk status " - "received: %d", __func__, status); + "received: %d\n", __func__, status); spin_lock_irqsave(&portdata->lock, flags); --portdata->outstanding_urbs; @@ -373,50 +418,61 @@ static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, unsigned long flags; unsigned char *buffer; struct urb *urb; - int status; + size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER); + int retval = 0; + + /* verify that we actually have some data to write */ + if (count == 0) + return 0; portdata = usb_get_serial_port_data(port); - dev_dbg(&port->dev, "%s: write (%d chars)", __func__, count); + dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize); spin_lock_irqsave(&portdata->lock, flags); + dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__, + portdata->outstanding_urbs); if (portdata->outstanding_urbs > N_OUT_URB) { spin_unlock_irqrestore(&portdata->lock, flags); dev_dbg(&port->dev, "%s - write limit hit\n", __func__); return 0; } portdata->outstanding_urbs++; + dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__, + portdata->outstanding_urbs); spin_unlock_irqrestore(&portdata->lock, flags); - buffer = kmalloc(count, GFP_ATOMIC); + buffer = kmalloc(writesize, GFP_ATOMIC); if (!buffer) { dev_err(&port->dev, "out of memory\n"); - count = -ENOMEM; + retval = -ENOMEM; goto error_no_buffer; } urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) { dev_err(&port->dev, "no more free urbs\n"); - count = -ENOMEM; + retval = -ENOMEM; goto error_no_urb; } - memcpy(buffer, buf, count); + memcpy(buffer, buf, writesize); - usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); + usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer); usb_fill_bulk_urb(urb, serial->dev, usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), - buffer, count, sierra_outdat_callback, port); + buffer, writesize, sierra_outdat_callback, port); + + /* Handle the need to send a zero length packet */ + urb->transfer_flags |= URB_ZERO_PACKET; /* send it down the pipe */ - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { + retval = usb_submit_urb(urb, GFP_ATOMIC); + if (retval) { dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " - "with status = %d\n", __func__, status); - count = status; + "with status = %d\n", __func__, retval); goto error; } @@ -424,7 +480,7 @@ static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, * really free it when it is finished with it */ usb_free_urb(urb); - return count; + return writesize; error: usb_free_urb(urb); error_no_urb: @@ -432,8 +488,10 @@ error_no_urb: error_no_buffer: spin_lock_irqsave(&portdata->lock, flags); --portdata->outstanding_urbs; + dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__, + portdata->outstanding_urbs); spin_unlock_irqrestore(&portdata->lock, flags); - return count; + return retval; } static void sierra_indat_callback(struct urb *urb) @@ -445,33 +503,39 @@ static void sierra_indat_callback(struct urb *urb) unsigned char *data = urb->transfer_buffer; int status = urb->status; - dbg("%s: %p", __func__, urb); - endpoint = usb_pipeendpoint(urb->pipe); - port = urb->context; + port = urb->context; + + dev_dbg(&port->dev, "%s: %p\n", __func__, urb); if (status) { dev_dbg(&port->dev, "%s: nonzero status: %d on" - " endpoint %02x.", __func__, status, endpoint); + " endpoint %02x\n", __func__, status, endpoint); } else { if (urb->actual_length) { tty = tty_port_tty_get(&port->port); + tty_buffer_request_room(tty, urb->actual_length); tty_insert_flip_string(tty, data, urb->actual_length); tty_flip_buffer_push(tty); + tty_kref_put(tty); - } else + usb_serial_debug_data(debug, &port->dev, __func__, + urb->actual_length, data); + } else { dev_dbg(&port->dev, "%s: empty read urb" - " received", __func__); - - /* Resubmit urb so we continue receiving */ - if (port->port.count && status != -ESHUTDOWN) { - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err) - dev_err(&port->dev, "resubmit read urb failed." - "(%d)\n", err); + " received\n", __func__); } } + + /* Resubmit urb so we continue receiving */ + if (port->port.count && status != -ESHUTDOWN && status != -EPERM) { + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err) + dev_err(&port->dev, "resubmit read urb failed." + "(%d)\n", err); + } + return; } @@ -483,8 +547,7 @@ static void sierra_instat_callback(struct urb *urb) struct sierra_port_private *portdata = usb_get_serial_port_data(port); struct usb_serial *serial = port->serial; - dev_dbg(&port->dev, "%s", __func__); - dev_dbg(&port->dev, "%s: urb %p port %p has data %p", __func__, + dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__, urb, port, portdata); if (status == 0) { @@ -504,7 +567,7 @@ static void sierra_instat_callback(struct urb *urb) sizeof(struct usb_ctrlrequest)); struct tty_struct *tty; - dev_dbg(&port->dev, "%s: signal x%x", __func__, + dev_dbg(&port->dev, "%s: signal x%x\n", __func__, signals); old_dcd_state = portdata->dcd_state; @@ -519,20 +582,20 @@ static void sierra_instat_callback(struct urb *urb) tty_hangup(tty); tty_kref_put(tty); } else { - dev_dbg(&port->dev, "%s: type %x req %x", + dev_dbg(&port->dev, "%s: type %x req %x\n", __func__, req_pkt->bRequestType, req_pkt->bRequest); } } else - dev_dbg(&port->dev, "%s: error %d", __func__, status); + dev_dbg(&port->dev, "%s: error %d\n", __func__, status); /* Resubmit urb so we continue receiving IRQ data */ - if (status != -ESHUTDOWN) { + if (port->port.count && status != -ESHUTDOWN && status != -ENOENT) { urb->dev = serial->dev; err = usb_submit_urb(urb, GFP_ATOMIC); if (err) - dev_dbg(&port->dev, "%s: resubmit intr urb " - "failed. (%d)", __func__, err); + dev_err(&port->dev, "%s: resubmit intr urb " + "failed. (%d)\n", __func__, err); } } @@ -542,7 +605,7 @@ static int sierra_write_room(struct tty_struct *tty) struct sierra_port_private *portdata = usb_get_serial_port_data(port); unsigned long flags; - dev_dbg(&port->dev, "%s - port %d", __func__, port->number); + dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); /* try to give a good number back based on if we have any free urbs at * this point in time */ @@ -557,67 +620,99 @@ static int sierra_write_room(struct tty_struct *tty) return 2048; } -static int sierra_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void sierra_stop_rx_urbs(struct usb_serial_port *port) { - struct sierra_port_private *portdata; - struct usb_serial *serial = port->serial; int i; - struct urb *urb; - int result; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); - portdata = usb_get_serial_port_data(port); + for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) + usb_kill_urb(portdata->in_urbs[i]); - dev_dbg(&port->dev, "%s", __func__); + usb_kill_urb(port->interrupt_in_urb); +} - /* Set some sane defaults */ - portdata->rts_state = 1; - portdata->dtr_state = 1; +static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags) +{ + int ok_cnt; + int err = -EINVAL; + int i; + struct urb *urb; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); - /* Reset low level data toggle and start reading from endpoints */ - for (i = 0; i < N_IN_URB; i++) { + ok_cnt = 0; + for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { urb = portdata->in_urbs[i]; if (!urb) continue; - if (urb->dev != serial->dev) { - dev_dbg(&port->dev, "%s: dev %p != %p", - __func__, urb->dev, serial->dev); - continue; + err = usb_submit_urb(urb, mem_flags); + if (err) { + dev_err(&port->dev, "%s: submit urb failed: %d\n", + __func__, err); + } else { + ok_cnt++; } + } - /* - * make sure endpoint data toggle is synchronized with the - * device - */ - usb_clear_halt(urb->dev, urb->pipe); - - result = usb_submit_urb(urb, GFP_KERNEL); - if (result) { - dev_err(&port->dev, "submit urb %d failed (%d) %d\n", - i, result, urb->transfer_buffer_length); + if (ok_cnt && port->interrupt_in_urb) { + err = usb_submit_urb(port->interrupt_in_urb, mem_flags); + if (err) { + dev_err(&port->dev, "%s: submit intr urb failed: %d\n", + __func__, err); } } - sierra_send_setup(tty, port); + if (ok_cnt > 0) /* at least one rx urb submitted */ + return 0; + else + return err; +} - /* start up the interrupt endpoint if we have one */ - if (port->interrupt_in_urb) { - result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); - if (result) - dev_err(&port->dev, "submit irq_in urb failed %d\n", - result); +static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint, + int dir, void *ctx, int len, + gfp_t mem_flags, + usb_complete_t callback) +{ + struct urb *urb; + u8 *buf; + + if (endpoint == -1) + return NULL; + + urb = usb_alloc_urb(0, mem_flags); + if (urb == NULL) { + dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n", + __func__, endpoint); + return NULL; } - return 0; + + buf = kmalloc(len, mem_flags); + if (buf) { + /* Fill URB using supplied data */ + usb_fill_bulk_urb(urb, serial->dev, + usb_sndbulkpipe(serial->dev, endpoint) | dir, + buf, len, callback, ctx); + + /* debug */ + dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__, + dir == USB_DIR_IN ? 'i' : 'o', urb, buf); + } else { + dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__, + dir == USB_DIR_IN ? 'i' : 'o', urb, buf); + + sierra_release_urb(urb); + urb = NULL; + } + + return urb; } -static void sierra_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void sierra_close(struct usb_serial_port *port) { int i; struct usb_serial *serial = port->serial; struct sierra_port_private *portdata; - dev_dbg(&port->dev, "%s", __func__); + dev_dbg(&port->dev, "%s\n", __func__); portdata = usb_get_serial_port_data(port); portdata->rts_state = 0; @@ -626,27 +721,85 @@ static void sierra_close(struct tty_struct *tty, if (serial->dev) { mutex_lock(&serial->disc_mutex); if (!serial->disconnected) - sierra_send_setup(tty, port); + sierra_send_setup(port); mutex_unlock(&serial->disc_mutex); - /* Stop reading/writing urbs */ - for (i = 0; i < N_IN_URB; i++) - usb_kill_urb(portdata->in_urbs[i]); + /* Stop reading urbs */ + sierra_stop_rx_urbs(port); + /* .. and release them */ + for (i = 0; i < N_IN_URB; i++) { + sierra_release_urb(portdata->in_urbs[i]); + portdata->in_urbs[i] = NULL; + } } +} - usb_kill_urb(port->interrupt_in_urb); - tty_port_tty_set(&port->port, NULL); +static int sierra_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) +{ + struct sierra_port_private *portdata; + struct usb_serial *serial = port->serial; + int i; + int err; + int endpoint; + struct urb *urb; + + portdata = usb_get_serial_port_data(port); + + dev_dbg(&port->dev, "%s\n", __func__); + + /* Set some sane defaults */ + portdata->rts_state = 1; + portdata->dtr_state = 1; + + + endpoint = port->bulk_in_endpointAddress; + for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { + urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port, + IN_BUFLEN, GFP_KERNEL, + sierra_indat_callback); + portdata->in_urbs[i] = urb; + } + /* clear halt condition */ + usb_clear_halt(serial->dev, + usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN); + + err = sierra_submit_rx_urbs(port, GFP_KERNEL); + if (err) { + /* get rid of everything as in close */ + sierra_close(port); + return err; + } + sierra_send_setup(port); + + return 0; +} + + +static void sierra_dtr_rts(struct usb_serial_port *port, int on) +{ + struct usb_serial *serial = port->serial; + struct sierra_port_private *portdata; + + portdata = usb_get_serial_port_data(port); + portdata->rts_state = on; + portdata->dtr_state = on; + + if (serial->dev) { + mutex_lock(&serial->disc_mutex); + if (!serial->disconnected) + sierra_send_setup(port); + mutex_unlock(&serial->disc_mutex); + } } static int sierra_startup(struct usb_serial *serial) { struct usb_serial_port *port; struct sierra_port_private *portdata; - struct urb *urb; int i; - int j; - dev_dbg(&serial->dev->dev, "%s", __func__); + dev_dbg(&serial->dev->dev, "%s\n", __func__); /* Set Device mode to D0 */ sierra_set_power_state(serial->dev, 0x0000); @@ -661,51 +814,25 @@ static int sierra_startup(struct usb_serial *serial) portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); if (!portdata) { dev_dbg(&port->dev, "%s: kmalloc for " - "sierra_port_private (%d) failed!.", + "sierra_port_private (%d) failed!.\n", __func__, i); return -ENOMEM; } spin_lock_init(&portdata->lock); - for (j = 0; j < N_IN_URB; j++) { - portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL); - if (!portdata->in_buffer[j]) { - for (--j; j >= 0; j--) - kfree(portdata->in_buffer[j]); - kfree(portdata); - return -ENOMEM; - } - } - + /* Set the port private data pointer */ usb_set_serial_port_data(port, portdata); - - /* initialize the in urbs */ - for (j = 0; j < N_IN_URB; ++j) { - urb = usb_alloc_urb(0, GFP_KERNEL); - if (urb == NULL) { - dev_dbg(&port->dev, "%s: alloc for in " - "port failed.", __func__); - continue; - } - /* Fill URB using supplied data. */ - usb_fill_bulk_urb(urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - portdata->in_buffer[j], IN_BUFLEN, - sierra_indat_callback, port); - portdata->in_urbs[j] = urb; - } } return 0; } -static void sierra_shutdown(struct usb_serial *serial) +static void sierra_release(struct usb_serial *serial) { - int i, j; + int i; struct usb_serial_port *port; struct sierra_port_private *portdata; - dev_dbg(&serial->dev->dev, "%s", __func__); + dev_dbg(&serial->dev->dev, "%s\n", __func__); for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; @@ -714,14 +841,7 @@ static void sierra_shutdown(struct usb_serial *serial) portdata = usb_get_serial_port_data(port); if (!portdata) continue; - - for (j = 0; j < N_IN_URB; j++) { - usb_kill_urb(portdata->in_urbs[j]); - usb_free_urb(portdata->in_urbs[j]); - kfree(portdata->in_buffer[j]); - } kfree(portdata); - usb_set_serial_port_data(port, NULL); } } @@ -737,13 +857,14 @@ static struct usb_serial_driver sierra_device = { .probe = sierra_probe, .open = sierra_open, .close = sierra_close, + .dtr_rts = sierra_dtr_rts, .write = sierra_write, .write_room = sierra_write_room, .set_termios = sierra_set_termios, .tiocmget = sierra_tiocmget, .tiocmset = sierra_tiocmset, .attach = sierra_startup, - .shutdown = sierra_shutdown, + .release = sierra_release, .read_int_callback = sierra_instat_callback, }; diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 5e7528cc81a8..3c249d8e8b8e 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -356,7 +356,7 @@ cleanup: } /* call when the device plug out. free all the memory alloced by probe */ -static void spcp8x5_shutdown(struct usb_serial *serial) +static void spcp8x5_release(struct usb_serial *serial) { int i; struct spcp8x5_private *priv; @@ -366,7 +366,6 @@ static void spcp8x5_shutdown(struct usb_serial *serial) if (priv) { free_ringbuf(priv->buf); kfree(priv); - usb_set_serial_port_data(serial->port[i] , NULL); } } } @@ -446,66 +445,47 @@ static void spcp8x5_set_workMode(struct usb_device *dev, u16 value, "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret); } +static int spcp8x5_carrier_raised(struct usb_serial_port *port) +{ + struct spcp8x5_private *priv = usb_get_serial_port_data(port); + if (priv->line_status & MSR_STATUS_LINE_DCD) + return 1; + return 0; +} + +static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) +{ + struct spcp8x5_private *priv = usb_get_serial_port_data(port); + unsigned long flags; + u8 control; + + spin_lock_irqsave(&priv->lock, flags); + if (on) + priv->line_control = MCR_CONTROL_LINE_DTR + | MCR_CONTROL_LINE_RTS; + else + priv->line_control &= ~ (MCR_CONTROL_LINE_DTR + | MCR_CONTROL_LINE_RTS); + control = priv->line_control; + spin_unlock_irqrestore(&priv->lock, flags); + spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); +} + /* close the serial port. We should wait for data sending to device 1st and * then kill all urb. */ -static void spcp8x5_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void spcp8x5_close(struct usb_serial_port *port) { struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; - unsigned int c_cflag; - int bps; - long timeout; - wait_queue_t wait; int result; dbg("%s - port %d", __func__, port->number); - /* wait for data to drain from the buffer */ spin_lock_irqsave(&priv->lock, flags); - timeout = SPCP8x5_CLOSING_WAIT; - init_waitqueue_entry(&wait, current); - add_wait_queue(&tty->write_wait, &wait); - for (;;) { - set_current_state(TASK_INTERRUPTIBLE); - if (ringbuf_avail_data(priv->buf) == 0 || - timeout == 0 || signal_pending(current)) - break; - spin_unlock_irqrestore(&priv->lock, flags); - timeout = schedule_timeout(timeout); - spin_lock_irqsave(&priv->lock, flags); - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&tty->write_wait, &wait); - /* clear out any remaining data in the buffer */ clear_ringbuf(priv->buf); spin_unlock_irqrestore(&priv->lock, flags); - /* wait for characters to drain from the device (this is long enough - * for the entire all byte spcp8x5 hardware buffer to drain with no - * flow control for data rates of 1200 bps or more, for lower rates we - * should really know how much data is in the buffer to compute a delay - * that is not unnecessarily long) */ - bps = tty_get_baud_rate(tty); - if (bps > 1200) - timeout = max((HZ*2560) / bps, HZ/10); - else - timeout = 2*HZ; - set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(timeout); - - /* clear control lines */ - if (tty) { - c_cflag = tty->termios->c_cflag; - if (c_cflag & HUPCL) { - spin_lock_irqsave(&priv->lock, flags); - priv->line_control = 0; - spin_unlock_irqrestore(&priv->lock, flags); - spcp8x5_set_ctrlLine(port->serial->dev, 0 , priv->type); - } - } - /* kill urb */ if (port->write_urb != NULL) { result = usb_unlink_urb(port->write_urb); @@ -665,13 +645,6 @@ static int spcp8x5_open(struct tty_struct *tty, if (ret) return ret; - spin_lock_irqsave(&priv->lock, flags); - if (tty && (tty->termios->c_cflag & CBAUD)) - priv->line_control = MCR_DTR | MCR_RTS; - else - priv->line_control = 0; - spin_unlock_irqrestore(&priv->lock, flags); - spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type); /* Setup termios */ @@ -691,9 +664,10 @@ static int spcp8x5_open(struct tty_struct *tty, port->read_urb->dev = serial->dev; ret = usb_submit_urb(port->read_urb, GFP_KERNEL); if (ret) { - spcp8x5_close(tty, port, NULL); + spcp8x5_close(port); return -EPROTO; } + port->port.drain_delay = 256; return 0; } @@ -1033,6 +1007,8 @@ static struct usb_serial_driver spcp8x5_device = { .num_ports = 1, .open = spcp8x5_open, .close = spcp8x5_close, + .dtr_rts = spcp8x5_dtr_rts, + .carrier_raised = spcp8x5_carrier_raised, .write = spcp8x5_write, .set_termios = spcp8x5_set_termios, .ioctl = spcp8x5_ioctl, @@ -1043,7 +1019,7 @@ static struct usb_serial_driver spcp8x5_device = { .write_bulk_callback = spcp8x5_write_bulk_callback, .chars_in_buffer = spcp8x5_chars_in_buffer, .attach = spcp8x5_startup, - .shutdown = spcp8x5_shutdown, + .release = spcp8x5_release, }; static int __init spcp8x5_init(void) diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c index 69879e437940..6157fac9366b 100644 --- a/drivers/usb/serial/symbolserial.c +++ b/drivers/usb/serial/symbolserial.c @@ -152,8 +152,7 @@ static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port, return result; } -static void symbol_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static void symbol_close(struct usb_serial_port *port) { struct symbol_private *priv = usb_get_serial_data(port->serial); @@ -268,7 +267,7 @@ error: return retval; } -static void symbol_shutdown(struct usb_serial *serial) +static void symbol_disconnect(struct usb_serial *serial) { struct symbol_private *priv = usb_get_serial_data(serial); @@ -276,9 +275,16 @@ static void symbol_shutdown(struct usb_serial *serial) usb_kill_urb(priv->int_urb); usb_free_urb(priv->int_urb); +} + +static void symbol_release(struct usb_serial *serial) +{ + struct symbol_private *priv = usb_get_serial_data(serial); + + dbg("%s", __func__); + kfree(priv->int_buffer); kfree(priv); - usb_set_serial_data(serial, NULL); } static struct usb_driver symbol_driver = { @@ -300,7 +306,8 @@ static struct usb_serial_driver symbol_device = { .attach = symbol_startup, .open = symbol_open, .close = symbol_close, - .shutdown = symbol_shutdown, + .disconnect = symbol_disconnect, + .release = symbol_release, .throttle = symbol_throttle, .unthrottle = symbol_unthrottle, }; diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 0a64bac306ee..3bc609fe2242 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -97,11 +97,10 @@ struct ti_device { /* Function Declarations */ static int ti_startup(struct usb_serial *serial); -static void ti_shutdown(struct usb_serial *serial); +static void ti_release(struct usb_serial *serial); static int ti_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *file); -static void ti_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *file); +static void ti_close(struct usb_serial_port *port); static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count); static int ti_write_room(struct tty_struct *tty); @@ -192,7 +191,6 @@ static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = { { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, - { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, }; static struct usb_device_id ti_id_table_combined[14+2*TI_EXTRA_VID_PID_COUNT+1] = { @@ -231,7 +229,7 @@ static struct usb_serial_driver ti_1port_device = { .id_table = ti_id_table_3410, .num_ports = 1, .attach = ti_startup, - .shutdown = ti_shutdown, + .release = ti_release, .open = ti_open, .close = ti_close, .write = ti_write, @@ -259,7 +257,7 @@ static struct usb_serial_driver ti_2port_device = { .id_table = ti_id_table_5052, .num_ports = 2, .attach = ti_startup, - .shutdown = ti_shutdown, + .release = ti_release, .open = ti_open, .close = ti_close, .write = ti_write, @@ -474,7 +472,7 @@ free_tdev: } -static void ti_shutdown(struct usb_serial *serial) +static void ti_release(struct usb_serial *serial) { int i; struct ti_device *tdev = usb_get_serial_data(serial); @@ -487,12 +485,10 @@ static void ti_shutdown(struct usb_serial *serial) if (tport) { ti_buf_free(tport->tp_write_buf); kfree(tport); - usb_set_serial_port_data(serial->port[i], NULL); } } kfree(tdev); - usb_set_serial_data(serial, NULL); } @@ -647,8 +643,7 @@ release_lock: } -static void ti_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *file) +static void ti_close(struct usb_serial_port *port) { struct ti_device *tdev; struct ti_port *tport; @@ -732,7 +727,7 @@ static int ti_write_room(struct tty_struct *tty) dbg("%s - port %d", __func__, port->number); if (tport == NULL) - return -ENODEV; + return 0; spin_lock_irqsave(&tport->tp_lock, flags); room = ti_buf_space_avail(tport->tp_write_buf); @@ -753,7 +748,7 @@ static int ti_chars_in_buffer(struct tty_struct *tty) dbg("%s - port %d", __func__, port->number); if (tport == NULL) - return -ENODEV; + return 0; spin_lock_irqsave(&tport->tp_lock, flags); chars = ti_buf_data_avail(tport->tp_write_buf); @@ -1662,7 +1657,7 @@ static int ti_do_download(struct usb_device *dev, int pipe, u8 cs = 0; int done; struct ti_firmware_header *header; - int status; + int status = 0; int len; for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index f331e2bde88a..bd7581b3a48a 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -21,6 +21,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/tty.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> @@ -141,6 +142,14 @@ static void destroy_serial(struct kref *kref) if (serial->minor != SERIAL_TTY_NO_MINOR) return_serial(serial); + serial->type->release(serial); + + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + if (port) + put_device(&port->dev); + } + /* If this is a "fake" port, we have to clean it up here, as it will * not get cleaned up in port_release() as it was never registered with * the driver core */ @@ -148,9 +157,8 @@ static void destroy_serial(struct kref *kref) for (i = serial->num_ports; i < serial->num_port_pointers; ++i) { port = serial->port[i]; - if (!port) - continue; - port_free(port); + if (port) + port_free(port); } } @@ -213,7 +221,8 @@ static int serial_open (struct tty_struct *tty, struct file *filp) tty->driver_data = port; tty_port_tty_set(&port->port, tty); - if (port->port.count == 1) { + /* If the console is attached, the device is already open */ + if (port->port.count == 1 && !port->console) { /* lock this module before we call it * this may fail, which means we must bail out, @@ -238,9 +247,11 @@ static int serial_open (struct tty_struct *tty, struct file *filp) goto bailout_interface_put; mutex_unlock(&serial->disc_mutex); } - mutex_unlock(&port->mutex); - return 0; + /* Now do the correct tty layer semantics */ + retval = tty_port_block_til_ready(&port->port, tty, filp); + if (retval == 0) + return 0; bailout_interface_put: usb_autopm_put_interface(serial->interface); @@ -259,64 +270,92 @@ bailout_serial_put: return retval; } -static void serial_close(struct tty_struct *tty, struct file *filp) +/** + * serial_do_down - shut down hardware + * @port: port to shut down + * + * Shut down a USB port unless it is the console. We never shut down the + * console hardware as it will always be in use. + * + * Don't free any resources at this point + */ +static void serial_do_down(struct usb_serial_port *port) { - struct usb_serial_port *port = tty->driver_data; + struct usb_serial_driver *drv = port->serial->type; struct usb_serial *serial; struct module *owner; - int count; - if (!port) + /* The console is magical, do not hang up the console hardware + or there will be tears */ + if (port->console) return; - dbg("%s - port %d", __func__, port->number); - mutex_lock(&port->mutex); serial = port->serial; owner = serial->type->driver.owner; - if (port->port.count == 0) { - mutex_unlock(&port->mutex); - return; - } + if (drv->close) + drv->close(port); - if (port->port.count == 1) - /* only call the device specific close if this - * port is being closed by the last owner. Ensure we do - * this before we drop the port count. The call is protected - * by the port mutex - */ - serial->type->close(tty, port, filp); - - if (port->port.count == (port->console ? 2 : 1)) { - struct tty_struct *tty = tty_port_tty_get(&port->port); - if (tty) { - /* We must do this before we drop the port count to - zero. */ - if (tty->driver_data) - tty->driver_data = NULL; - tty_port_tty_set(&port->port, NULL); - tty_kref_put(tty); - } - } - - --port->port.count; - count = port->port.count; mutex_unlock(&port->mutex); - put_device(&port->dev); +} + +/** + * serial_do_free - free resources post close/hangup + * @port: port to free up + * + * Do the resource freeing and refcount dropping for the port. We must + * be careful about ordering and we must avoid freeing up the console. + */ + +static void serial_do_free(struct usb_serial_port *port) +{ + struct usb_serial *serial; + struct module *owner; + /* The console is magical, do not hang up the console hardware + or there will be tears */ + if (port->console) + return; + + serial = port->serial; + owner = serial->type->driver.owner; + put_device(&port->dev); /* Mustn't dereference port any more */ - if (count == 0) { - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) - usb_autopm_put_interface(serial->interface); - mutex_unlock(&serial->disc_mutex); - } + mutex_lock(&serial->disc_mutex); + if (!serial->disconnected) + usb_autopm_put_interface(serial->interface); + mutex_unlock(&serial->disc_mutex); usb_serial_put(serial); - /* Mustn't dereference serial any more */ - if (count == 0) - module_put(owner); + module_put(owner); +} + +static void serial_close(struct tty_struct *tty, struct file *filp) +{ + struct usb_serial_port *port = tty->driver_data; + + if (!port) + return; + + dbg("%s - port %d", __func__, port->number); + + + if (tty_port_close_start(&port->port, tty, filp) == 0) + return; + + serial_do_down(port); + tty_port_close_end(&port->port, tty); + tty_port_tty_set(&port->port, NULL); + serial_do_free(port); +} + +static void serial_hangup(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + serial_do_down(port); + tty_port_hangup(&port->port); + serial_do_free(port); } static int serial_write(struct tty_struct *tty, const unsigned char *buf, @@ -648,6 +687,29 @@ static struct usb_serial_driver *search_serial_device( return NULL; } +static int serial_carrier_raised(struct tty_port *port) +{ + struct usb_serial_port *p = container_of(port, struct usb_serial_port, port); + struct usb_serial_driver *drv = p->serial->type; + if (drv->carrier_raised) + return drv->carrier_raised(p); + /* No carrier control - don't block */ + return 1; +} + +static void serial_dtr_rts(struct tty_port *port, int on) +{ + struct usb_serial_port *p = container_of(port, struct usb_serial_port, port); + struct usb_serial_driver *drv = p->serial->type; + if (drv->dtr_rts) + drv->dtr_rts(p, on); +} + +static const struct tty_port_operations serial_port_ops = { + .carrier_raised = serial_carrier_raised, + .dtr_rts = serial_dtr_rts, +}; + int usb_serial_probe(struct usb_interface *interface, const struct usb_device_id *id) { @@ -841,6 +903,7 @@ int usb_serial_probe(struct usb_interface *interface, if (!port) goto probe_error; tty_port_init(&port->port); + port->port.ops = &serial_port_ops; port->serial = serial; spin_lock_init(&port->lock); mutex_init(&port->mutex); @@ -995,10 +1058,15 @@ int usb_serial_probe(struct usb_interface *interface, dev_set_name(&port->dev, "ttyUSB%d", port->number); dbg ("%s - registering %s", __func__, dev_name(&port->dev)); + port->dev_state = PORT_REGISTERING; retval = device_register(&port->dev); - if (retval) + if (retval) { dev_err(&port->dev, "Error registering port device, " "continuing\n"); + port->dev_state = PORT_UNREGISTERED; + } else { + port->dev_state = PORT_REGISTERED; + } } usb_serial_console_init(debug, minor); @@ -1062,31 +1130,38 @@ void usb_serial_disconnect(struct usb_interface *interface) serial->disconnected = 1; mutex_unlock(&serial->disc_mutex); - /* Unfortunately, many of the sub-drivers expect the port structures - * to exist when their shutdown method is called, so we have to go - * through this awkward two-step unregistration procedure. - */ for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; if (port) { struct tty_struct *tty = tty_port_tty_get(&port->port); if (tty) { + /* The hangup will occur asynchronously but + the object refcounts will sort out all the + cleanup */ tty_hangup(tty); tty_kref_put(tty); } kill_traffic(port); cancel_work_sync(&port->work); - device_del(&port->dev); - } - } - serial->type->shutdown(serial); - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - if (port) { - put_device(&port->dev); - serial->port[i] = NULL; + if (port->dev_state == PORT_REGISTERED) { + + /* Make sure the port is bound so that the + * driver's port_remove method is called. + */ + if (!port->dev.driver) { + int rc; + + port->dev.driver = + &serial->type->driver; + rc = device_bind_driver(&port->dev); + } + port->dev_state = PORT_UNREGISTERING; + device_del(&port->dev); + port->dev_state = PORT_UNREGISTERED; + } } } + serial->type->disconnect(serial); /* let the last holder of this object * cause it to be cleaned up */ @@ -1135,6 +1210,7 @@ static const struct tty_operations serial_ops = { .open = serial_open, .close = serial_close, .write = serial_write, + .hangup = serial_hangup, .write_room = serial_write_room, .ioctl = serial_ioctl, .set_termios = serial_set_termios, @@ -1147,6 +1223,7 @@ static const struct tty_operations serial_ops = { .proc_fops = &serial_proc_fops, }; + struct tty_driver *usb_serial_tty_driver; static int __init usb_serial_init(void) @@ -1262,7 +1339,8 @@ static void fixup_generic(struct usb_serial_driver *device) set_to_generic_if_null(device, chars_in_buffer); set_to_generic_if_null(device, read_bulk_callback); set_to_generic_if_null(device, write_bulk_callback); - set_to_generic_if_null(device, shutdown); + set_to_generic_if_null(device, disconnect); + set_to_generic_if_null(device, release); } int usb_serial_register(struct usb_serial_driver *driver) diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index 6c9cbb59552a..614800972dc3 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -15,7 +15,19 @@ #include <linux/usb.h> #include <linux/usb/serial.h> +#define URB_DEBUG_MAX_IN_FLIGHT_URBS 4000 #define USB_DEBUG_MAX_PACKET_SIZE 8 +#define USB_DEBUG_BRK_SIZE 8 +static char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = { + 0x00, + 0xff, + 0x01, + 0xfe, + 0x00, + 0xfe, + 0x01, + 0xff, +}; static struct usb_device_id id_table [] = { { USB_DEVICE(0x0525, 0x127a) }, @@ -38,6 +50,32 @@ static int usb_debug_open(struct tty_struct *tty, struct usb_serial_port *port, return usb_serial_generic_open(tty, port, filp); } +/* This HW really does not support a serial break, so one will be + * emulated when ever the break state is set to true. + */ +static void usb_debug_break_ctl(struct tty_struct *tty, int break_state) +{ + struct usb_serial_port *port = tty->driver_data; + if (!break_state) + return; + usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE); +} + +static void usb_debug_read_bulk_callback(struct urb *urb) +{ + struct usb_serial_port *port = urb->context; + + if (urb->actual_length == USB_DEBUG_BRK_SIZE && + memcmp(urb->transfer_buffer, USB_DEBUG_BRK, + USB_DEBUG_BRK_SIZE) == 0) { + usb_serial_handle_break(port); + usb_serial_generic_resubmit_read_urb(port, GFP_ATOMIC); + return; + } + + usb_serial_generic_read_bulk_callback(urb); +} + static struct usb_serial_driver debug_device = { .driver = { .owner = THIS_MODULE, @@ -46,6 +84,9 @@ static struct usb_serial_driver debug_device = { .id_table = id_table, .num_ports = 1, .open = usb_debug_open, + .max_in_flight_urbs = URB_DEBUG_MAX_IN_FLIGHT_URBS, + .break_ctl = usb_debug_break_ctl, + .read_bulk_callback = usb_debug_read_bulk_callback, }; static int __init debug_init(void) diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 5ac414bda718..f5d0f64dcc52 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -38,8 +38,7 @@ /* function prototypes for a handspring visor */ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void visor_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static void visor_close(struct usb_serial_port *port); static int visor_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int visor_write_room(struct tty_struct *tty); @@ -48,7 +47,7 @@ static void visor_unthrottle(struct tty_struct *tty); static int visor_probe(struct usb_serial *serial, const struct usb_device_id *id); static int visor_calc_num_ports(struct usb_serial *serial); -static void visor_shutdown(struct usb_serial *serial); +static void visor_release(struct usb_serial *serial); static void visor_write_bulk_callback(struct urb *urb); static void visor_read_bulk_callback(struct urb *urb); static void visor_read_int_callback(struct urb *urb); @@ -203,7 +202,7 @@ static struct usb_serial_driver handspring_device = { .attach = treo_attach, .probe = visor_probe, .calc_num_ports = visor_calc_num_ports, - .shutdown = visor_shutdown, + .release = visor_release, .write = visor_write, .write_room = visor_write_room, .write_bulk_callback = visor_write_bulk_callback, @@ -228,7 +227,7 @@ static struct usb_serial_driver clie_5_device = { .attach = clie_5_attach, .probe = visor_probe, .calc_num_ports = visor_calc_num_ports, - .shutdown = visor_shutdown, + .release = visor_release, .write = visor_write, .write_room = visor_write_room, .write_bulk_callback = visor_write_bulk_callback, @@ -324,8 +323,7 @@ exit: } -static void visor_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void visor_close(struct usb_serial_port *port) { struct visor_private *priv = usb_get_serial_port_data(port); unsigned char *transfer_buffer; @@ -920,7 +918,7 @@ static int clie_5_attach(struct usb_serial *serial) return generic_startup(serial); } -static void visor_shutdown(struct usb_serial *serial) +static void visor_release(struct usb_serial *serial) { struct visor_private *priv; int i; @@ -929,10 +927,7 @@ static void visor_shutdown(struct usb_serial *serial) for (i = 0; i < serial->num_ports; i++) { priv = usb_get_serial_port_data(serial->port[i]); - if (priv) { - usb_set_serial_port_data(serial->port[i], NULL); - kfree(priv); - } + kfree(priv); } } diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index 5335d3211c07..8d126dd7a02e 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -144,11 +144,10 @@ static int whiteheat_firmware_attach(struct usb_serial *serial); /* function prototypes for the Connect Tech WhiteHEAT serial converter */ static int whiteheat_attach(struct usb_serial *serial); -static void whiteheat_shutdown(struct usb_serial *serial); +static void whiteheat_release(struct usb_serial *serial); static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void whiteheat_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static void whiteheat_close(struct usb_serial_port *port); static int whiteheat_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -190,7 +189,7 @@ static struct usb_serial_driver whiteheat_device = { .id_table = id_table_std, .num_ports = 4, .attach = whiteheat_attach, - .shutdown = whiteheat_shutdown, + .release = whiteheat_release, .open = whiteheat_open, .close = whiteheat_close, .write = whiteheat_write, @@ -618,7 +617,7 @@ no_command_buffer: } -static void whiteheat_shutdown(struct usb_serial *serial) +static void whiteheat_release(struct usb_serial *serial) { struct usb_serial_port *command_port; struct usb_serial_port *port; @@ -712,8 +711,7 @@ exit: } -static void whiteheat_close(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void whiteheat_close(struct usb_serial_port *port) { struct whiteheat_private *info = usb_get_serial_port_data(port); struct whiteheat_urb_wrap *wrap; @@ -723,31 +721,7 @@ static void whiteheat_close(struct tty_struct *tty, dbg("%s - port %d", __func__, port->number); - mutex_lock(&port->serial->disc_mutex); - /* filp is NULL when called from usb_serial_disconnect */ - if ((filp && (tty_hung_up_p(filp))) || port->serial->disconnected) { - mutex_unlock(&port->serial->disc_mutex); - return; - } - mutex_unlock(&port->serial->disc_mutex); - - tty->closing = 1; - -/* - * Not currently in use; tty_wait_until_sent() calls - * serial_chars_in_buffer() which deadlocks on the second semaphore - * acquisition. This should be fixed at some point. Greg's been - * notified. - if ((filp->f_flags & (O_NDELAY | O_NONBLOCK)) == 0) { - tty_wait_until_sent(tty, CLOSING_DELAY); - } -*/ - - tty_driver_flush_buffer(tty); - tty_ldisc_flush(tty); - firm_report_tx_done(port); - firm_close(port); /* shutdown our bulk reads and writes */ @@ -775,10 +749,7 @@ static void whiteheat_close(struct tty_struct *tty, } spin_unlock_irq(&info->lock); mutex_unlock(&info->deathwarrant); - stop_command_port(port->serial); - - tty->closing = 0; } diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c index 2dd9bd4bff56..ec17c96371af 100644 --- a/drivers/usb/storage/initializers.c +++ b/drivers/usb/storage/initializers.c @@ -52,7 +52,7 @@ int usb_stor_euscsi_init(struct us_data *us) us->iobuf[0] = 0x1; result = usb_stor_control_msg(us, us->send_ctrl_pipe, 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR, - 0x01, 0x0, us->iobuf, 0x1, 5*HZ); + 0x01, 0x0, us->iobuf, 0x1, 5000); US_DEBUGP("-- result is %d\n", result); return 0; @@ -80,14 +80,16 @@ int usb_stor_ucr61s2b_init(struct us_data *us) res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb, US_BULK_CB_WRAP_LEN, &partial); - if(res) - return res; + if (res) + return -EIO; US_DEBUGP("Getting status packet...\n"); res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, US_BULK_CS_WRAP_LEN, &partial); + if (res) + return -EIO; - return (res ? -1 : 0); + return 0; } /* This places the HUAWEI E220 devices in multi-port mode */ @@ -99,6 +101,6 @@ int usb_stor_huawei_e220_init(struct us_data *us) USB_REQ_SET_FEATURE, USB_TYPE_STANDARD | USB_RECIP_DEVICE, 0x01, 0x0, NULL, 0x0, 1000); - US_DEBUGP("usb_control_msg performing result is %d\n", result); - return (result ? 0 : -1); + US_DEBUGP("Huawei mode set result is %d\n", result); + return (result ? 0 : -ENODEV); } diff --git a/drivers/usb/storage/option_ms.c b/drivers/usb/storage/option_ms.c index 353f922939a4..773a5cd38c5a 100644 --- a/drivers/usb/storage/option_ms.c +++ b/drivers/usb/storage/option_ms.c @@ -37,7 +37,7 @@ MODULE_PARM_DESC(option_zero_cd, "ZeroCD mode (1=Force Modem (default)," #define RESPONSE_LEN 1024 -static int option_rezero(struct us_data *us, int ep_in, int ep_out) +static int option_rezero(struct us_data *us) { const unsigned char rezero_msg[] = { 0x55, 0x53, 0x42, 0x43, 0x78, 0x56, 0x34, 0x12, @@ -54,10 +54,10 @@ static int option_rezero(struct us_data *us, int ep_in, int ep_out) if (buffer == NULL) return USB_STOR_TRANSPORT_ERROR; - memcpy(buffer, rezero_msg, sizeof (rezero_msg)); + memcpy(buffer, rezero_msg, sizeof(rezero_msg)); result = usb_stor_bulk_transfer_buf(us, - usb_sndbulkpipe(us->pusb_dev, ep_out), - buffer, sizeof (rezero_msg), NULL); + us->send_bulk_pipe, + buffer, sizeof(rezero_msg), NULL); if (result != USB_STOR_XFER_GOOD) { result = USB_STOR_XFER_ERROR; goto out; @@ -66,9 +66,15 @@ static int option_rezero(struct us_data *us, int ep_in, int ep_out) /* Some of the devices need to be asked for a response, but we don't * care what that response is. */ - result = usb_stor_bulk_transfer_buf(us, - usb_sndbulkpipe(us->pusb_dev, ep_out), + usb_stor_bulk_transfer_buf(us, + us->recv_bulk_pipe, buffer, RESPONSE_LEN, NULL); + + /* Read the CSW */ + usb_stor_bulk_transfer_buf(us, + us->recv_bulk_pipe, + buffer, 13, NULL); + result = USB_STOR_XFER_GOOD; out: @@ -76,63 +82,78 @@ out: return result; } -int option_ms_init(struct us_data *us) +static int option_inquiry(struct us_data *us) { - struct usb_device *udev; - struct usb_interface *intf; - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint = NULL; - u8 ep_in = 0, ep_out = 0; - int ep_in_size = 0, ep_out_size = 0; - int i, result; - - udev = us->pusb_dev; - intf = us->pusb_intf; - - /* Ensure it's really a ZeroCD device; devices that are already - * in modem mode return 0xFF for class, subclass, and protocol. - */ - if (udev->descriptor.bDeviceClass != 0 || - udev->descriptor.bDeviceSubClass != 0 || - udev->descriptor.bDeviceProtocol != 0) - return USB_STOR_TRANSPORT_GOOD; + const unsigned char inquiry_msg[] = { + 0x55, 0x53, 0x42, 0x43, 0x12, 0x34, 0x56, 0x78, + 0x24, 0x00, 0x00, 0x00, 0x80, 0x00, 0x06, 0x12, + 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }; + char *buffer; + int result; - US_DEBUGP("Option MS: option_ms_init called\n"); + US_DEBUGP("Option MS: %s", "device inquiry for vendor name\n"); - /* Find the right mass storage interface */ - iface_desc = intf->cur_altsetting; - if (iface_desc->desc.bInterfaceClass != 0x8 || - iface_desc->desc.bInterfaceSubClass != 0x6 || - iface_desc->desc.bInterfaceProtocol != 0x50) { - US_DEBUGP("Option MS: mass storage interface not found, no action " - "required\n"); - return USB_STOR_TRANSPORT_GOOD; - } + buffer = kzalloc(0x24, GFP_KERNEL); + if (buffer == NULL) + return USB_STOR_TRANSPORT_ERROR; - /* Find the mass storage bulk endpoints */ - for (i = 0; i < iface_desc->desc.bNumEndpoints && (!ep_in_size || !ep_out_size); ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_bulk_in(endpoint)) { - ep_in = usb_endpoint_num(endpoint); - ep_in_size = le16_to_cpu(endpoint->wMaxPacketSize); - } else if (usb_endpoint_is_bulk_out(endpoint)) { - ep_out = usb_endpoint_num(endpoint); - ep_out_size = le16_to_cpu(endpoint->wMaxPacketSize); - } + memcpy(buffer, inquiry_msg, sizeof(inquiry_msg)); + result = usb_stor_bulk_transfer_buf(us, + us->send_bulk_pipe, + buffer, sizeof(inquiry_msg), NULL); + if (result != USB_STOR_XFER_GOOD) { + result = USB_STOR_XFER_ERROR; + goto out; } - /* Can't find the mass storage endpoints */ - if (!ep_in_size || !ep_out_size) { - US_DEBUGP("Option MS: mass storage endpoints not found, no action " - "required\n"); - return USB_STOR_TRANSPORT_GOOD; + result = usb_stor_bulk_transfer_buf(us, + us->recv_bulk_pipe, + buffer, 0x24, NULL); + if (result != USB_STOR_XFER_GOOD) { + result = USB_STOR_XFER_ERROR; + goto out; } + result = memcmp(buffer+8, "Option", 6); + + if (result != 0) + result = memcmp(buffer+8, "ZCOPTION", 8); + + /* Read the CSW */ + usb_stor_bulk_transfer_buf(us, + us->recv_bulk_pipe, + buffer, 13, NULL); + +out: + kfree(buffer); + return result; +} + + +int option_ms_init(struct us_data *us) +{ + int result; + + US_DEBUGP("Option MS: option_ms_init called\n"); + + /* Additional test for vendor information via INQUIRY, + * because some vendor/product IDs are ambiguous + */ + result = option_inquiry(us); + if (result != 0) { + US_DEBUGP("Option MS: vendor is not Option or not determinable," + " no action taken\n"); + return 0; + } else + US_DEBUGP("Option MS: this is a genuine Option device," + " proceeding\n"); + /* Force Modem mode */ if (option_zero_cd == ZCD_FORCE_MODEM) { US_DEBUGP("Option MS: %s", "Forcing Modem Mode\n"); - result = option_rezero(us, ep_in, ep_out); + result = option_rezero(us); if (result != USB_STOR_XFER_GOOD) US_DEBUGP("Option MS: Failed to switch to modem mode.\n"); return -EIO; @@ -142,6 +163,6 @@ int option_ms_init(struct us_data *us) " requests it\n"); } - return USB_STOR_TRANSPORT_GOOD; + return 0; } diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 4ca3b5860643..cfa26d56ce60 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -132,7 +132,7 @@ static int slave_configure(struct scsi_device *sdev) if (us->fflags & US_FL_MAX_SECTORS_MIN) max_sectors = PAGE_CACHE_SIZE >> 9; - if (sdev->request_queue->max_sectors > max_sectors) + if (queue_max_sectors(sdev->request_queue) > max_sectors) blk_queue_max_sectors(sdev->request_queue, max_sectors); } else if (sdev->type == TYPE_TAPE) { @@ -483,7 +483,7 @@ static ssize_t show_max_sectors(struct device *dev, struct device_attribute *att { struct scsi_device *sdev = to_scsi_device(dev); - return sprintf(buf, "%u\n", sdev->request_queue->max_sectors); + return sprintf(buf, "%u\n", queue_max_sectors(sdev->request_queue)); } /* Input routine for the sysfs max_sectors file */ diff --git a/drivers/usb/storage/sierra_ms.c b/drivers/usb/storage/sierra_ms.c index 4359a2cb42df..4395c4100ec2 100644 --- a/drivers/usb/storage/sierra_ms.c +++ b/drivers/usb/storage/sierra_ms.c @@ -202,6 +202,6 @@ int sierra_ms_init(struct us_data *us) complete: result = device_create_file(&us->pusb_intf->dev, &dev_attr_truinst); - return USB_STOR_TRANSPORT_GOOD; + return 0; } diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 4b8b69045fe6..1b9c5dd0fb27 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -1385,7 +1385,7 @@ UNUSUAL_DEV( 0x10d6, 0x2200, 0x0100, 0x0100, UNUSUAL_DEV( 0x1186, 0x3e04, 0x0000, 0x0000, "D-Link", "USB Mass Storage", - US_SC_DEVICE, US_PR_DEVICE, option_ms_init, 0), + US_SC_DEVICE, US_PR_DEVICE, option_ms_init, US_FL_IGNORE_DEVICE), /* Reported by Kevin Lloyd <linux@sierrawireless.com> * Entry is needed for the initializer function override, |