diff options
Diffstat (limited to 'drivers/pcmcia/yenta_socket.c')
| -rw-r--r-- | drivers/pcmcia/yenta_socket.c | 1160 |
1 files changed, 1160 insertions, 0 deletions
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c new file mode 100644 index 000000000000..6404d97a12eb --- /dev/null +++ b/drivers/pcmcia/yenta_socket.c @@ -0,0 +1,1160 @@ +/* + * Regular cardbus driver ("yenta_socket") + * + * (C) Copyright 1999, 2000 Linus Torvalds + * + * Changelog: + * Aug 2002: Manfred Spraul <manfred@colorfullife.com> + * Dynamically adjust the size of the bridge resource + * + * May 2003: Dominik Brodowski <linux@brodo.de> + * Merge pci_socket.c and yenta.c into one file + */ +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/sched.h> +#include <linux/workqueue.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/module.h> + +#include <pcmcia/version.h> +#include <pcmcia/cs_types.h> +#include <pcmcia/ss.h> +#include <pcmcia/cs.h> + +#include <asm/io.h> + +#include "yenta_socket.h" +#include "i82365.h" + +static int disable_clkrun; +module_param(disable_clkrun, bool, 0444); +MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option"); + +#if 0 +#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args) +#else +#define debug(x,args...) +#endif + +/* Don't ask.. */ +#define to_cycles(ns) ((ns)/120) +#define to_ns(cycles) ((cycles)*120) + +static int yenta_probe_cb_irq(struct yenta_socket *socket); + + +static unsigned int override_bios; +module_param(override_bios, uint, 0000); +MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation"); + +/* + * Generate easy-to-use ways of reading a cardbus sockets + * regular memory space ("cb_xxx"), configuration space + * ("config_xxx") and compatibility space ("exca_xxxx") + */ +static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg) +{ + u32 val = readl(socket->base + reg); + debug("%p %04x %08x\n", socket, reg, val); + return val; +} + +static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val) +{ + debug("%p %04x %08x\n", socket, reg, val); + writel(val, socket->base + reg); +} + +static inline u8 config_readb(struct yenta_socket *socket, unsigned offset) +{ + u8 val; + pci_read_config_byte(socket->dev, offset, &val); + debug("%p %04x %02x\n", socket, offset, val); + return val; +} + +static inline u16 config_readw(struct yenta_socket *socket, unsigned offset) +{ + u16 val; + pci_read_config_word(socket->dev, offset, &val); + debug("%p %04x %04x\n", socket, offset, val); + return val; +} + +static inline u32 config_readl(struct yenta_socket *socket, unsigned offset) +{ + u32 val; + pci_read_config_dword(socket->dev, offset, &val); + debug("%p %04x %08x\n", socket, offset, val); + return val; +} + +static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val) +{ + debug("%p %04x %02x\n", socket, offset, val); + pci_write_config_byte(socket->dev, offset, val); +} + +static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val) +{ + debug("%p %04x %04x\n", socket, offset, val); + pci_write_config_word(socket->dev, offset, val); +} + +static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val) +{ + debug("%p %04x %08x\n", socket, offset, val); + pci_write_config_dword(socket->dev, offset, val); +} + +static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg) +{ + u8 val = readb(socket->base + 0x800 + reg); + debug("%p %04x %02x\n", socket, reg, val); + return val; +} + +static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg) +{ + u16 val; + val = readb(socket->base + 0x800 + reg); + val |= readb(socket->base + 0x800 + reg + 1) << 8; + debug("%p %04x %04x\n", socket, reg, val); + return val; +} + +static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val) +{ + debug("%p %04x %02x\n", socket, reg, val); + writeb(val, socket->base + 0x800 + reg); +} + +static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) +{ + debug("%p %04x %04x\n", socket, reg, val); + writeb(val, socket->base + 0x800 + reg); + writeb(val >> 8, socket->base + 0x800 + reg + 1); +} + +/* + * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend + * on what kind of card is inserted.. + */ +static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value) +{ + struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); + unsigned int val; + u32 state = cb_readl(socket, CB_SOCKET_STATE); + + val = (state & CB_3VCARD) ? SS_3VCARD : 0; + val |= (state & CB_XVCARD) ? SS_XVCARD : 0; + val |= (state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | CB_3VCARD + | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING; + + if (state & CB_CBCARD) { + val |= SS_CARDBUS; + val |= (state & CB_CARDSTS) ? SS_STSCHG : 0; + val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT; + val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0; + } else { + u8 status = exca_readb(socket, I365_STATUS); + val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0; + if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { + val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG; + } else { + val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD; + val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN; + } + val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0; + val |= (status & I365_CS_READY) ? SS_READY : 0; + val |= (status & I365_CS_POWERON) ? SS_POWERON : 0; + } + + *value = val; + return 0; +} + +static int yenta_Vcc_power(u32 control) +{ + switch (control & CB_SC_VCC_MASK) { + case CB_SC_VCC_5V: return 50; + case CB_SC_VCC_3V: return 33; + default: return 0; + } +} + +static int yenta_Vpp_power(u32 control) +{ + switch (control & CB_SC_VPP_MASK) { + case CB_SC_VPP_12V: return 120; + case CB_SC_VPP_5V: return 50; + case CB_SC_VPP_3V: return 33; + default: return 0; + } +} + +static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state) +{ + struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); + u8 reg; + u32 control; + + control = cb_readl(socket, CB_SOCKET_CONTROL); + + state->Vcc = yenta_Vcc_power(control); + state->Vpp = yenta_Vpp_power(control); + state->io_irq = socket->io_irq; + + if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { + u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL); + if (bridge & CB_BRIDGE_CRST) + state->flags |= SS_RESET; + return 0; + } + + /* 16-bit card state.. */ + reg = exca_readb(socket, I365_POWER); + state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0; + state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0; + + reg = exca_readb(socket, I365_INTCTL); + state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET; + state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0; + + reg = exca_readb(socket, I365_CSCINT); + state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0; + if (state->flags & SS_IOCARD) { + state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0; + } else { + state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0; + state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0; + state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0; + } + + return 0; +} + +static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state) +{ + u32 reg = 0; /* CB_SC_STPCLK? */ + switch (state->Vcc) { + case 33: reg = CB_SC_VCC_3V; break; + case 50: reg = CB_SC_VCC_5V; break; + default: reg = 0; break; + } + switch (state->Vpp) { + case 33: reg |= CB_SC_VPP_3V; break; + case 50: reg |= CB_SC_VPP_5V; break; + case 120: reg |= CB_SC_VPP_12V; break; + } + if (reg != cb_readl(socket, CB_SOCKET_CONTROL)) + cb_writel(socket, CB_SOCKET_CONTROL, reg); +} + +static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state) +{ + struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); + u16 bridge; + + yenta_set_power(socket, state); + socket->io_irq = state->io_irq; + bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR); + if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { + u8 intr; + bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0; + + /* ISA interrupt control? */ + intr = exca_readb(socket, I365_INTCTL); + intr = (intr & ~0xf); + if (!socket->cb_irq) { + intr |= state->io_irq; + bridge |= CB_BRIDGE_INTR; + } + exca_writeb(socket, I365_INTCTL, intr); + } else { + u8 reg; + + reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA); + reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET; + reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0; + if (state->io_irq != socket->cb_irq) { + reg |= state->io_irq; + bridge |= CB_BRIDGE_INTR; + } + exca_writeb(socket, I365_INTCTL, reg); + + reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK); + reg |= I365_PWR_NORESET; + if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO; + if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT; + if (exca_readb(socket, I365_POWER) != reg) + exca_writeb(socket, I365_POWER, reg); + + /* CSC interrupt: no ISA irq for CSC */ + reg = I365_CSC_DETECT; + if (state->flags & SS_IOCARD) { + if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG; + } else { + if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1; + if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2; + if (state->csc_mask & SS_READY) reg |= I365_CSC_READY; + } + exca_writeb(socket, I365_CSCINT, reg); + exca_readb(socket, I365_CSC); + if(sock->zoom_video) + sock->zoom_video(sock, state->flags & SS_ZVCARD); + } + config_writew(socket, CB_BRIDGE_CONTROL, bridge); + /* Socket event mask: get card insert/remove events.. */ + cb_writel(socket, CB_SOCKET_EVENT, -1); + cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); + return 0; +} + +static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) +{ + struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); + int map; + unsigned char ioctl, addr, enable; + + map = io->map; + + if (map > 1) + return -EINVAL; + + enable = I365_ENA_IO(map); + addr = exca_readb(socket, I365_ADDRWIN); + + /* Disable the window before changing it.. */ + if (addr & enable) { + addr &= ~enable; + exca_writeb(socket, I365_ADDRWIN, addr); + } + + exca_writew(socket, I365_IO(map)+I365_W_START, io->start); + exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop); + + ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map); + if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map); + if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map); + if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map); + exca_writeb(socket, I365_IOCTL, ioctl); + + if (io->flags & MAP_ACTIVE) + exca_writeb(socket, I365_ADDRWIN, addr | enable); + return 0; +} + +static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) +{ + struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); + struct pci_bus_region region; + int map; + unsigned char addr, enable; + unsigned int start, stop, card_start; + unsigned short word; + + pcibios_resource_to_bus(socket->dev, ®ion, mem->res); + + map = mem->map; + start = region.start; + stop = region.end; + card_start = mem->card_start; + + if (map > 4 || start > stop || ((start ^ stop) >> 24) || + (card_start >> 26) || mem->speed > 1000) + return -EINVAL; + + enable = I365_ENA_MEM(map); + addr = exca_readb(socket, I365_ADDRWIN); + if (addr & enable) { + addr &= ~enable; + exca_writeb(socket, I365_ADDRWIN, addr); + } + + exca_writeb(socket, CB_MEM_PAGE(map), start >> 24); + + word = (start >> 12) & 0x0fff; + if (mem->flags & MAP_16BIT) + word |= I365_MEM_16BIT; + if (mem->flags & MAP_0WS) + word |= I365_MEM_0WS; + exca_writew(socket, I365_MEM(map) + I365_W_START, word); + + word = (stop >> 12) & 0x0fff; + switch (to_cycles(mem->speed)) { + case 0: break; + case 1: word |= I365_MEM_WS0; break; + case 2: word |= I365_MEM_WS1; break; + default: word |= I365_MEM_WS1 | I365_MEM_WS0; break; + } + exca_writew(socket, I365_MEM(map) + I365_W_STOP, word); + + word = ((card_start - start) >> 12) & 0x3fff; + if (mem->flags & MAP_WRPROT) + word |= I365_MEM_WRPROT; + if (mem->flags & MAP_ATTRIB) + word |= I365_MEM_REG; + exca_writew(socket, I365_MEM(map) + I365_W_OFF, word); + + if (mem->flags & MAP_ACTIVE) + exca_writeb(socket, I365_ADDRWIN, addr | enable); + return 0; +} + + +static unsigned int yenta_events(struct yenta_socket *socket) +{ + u8 csc; + u32 cb_event; + unsigned int events; + + /* Clear interrupt status for the event */ + cb_event = cb_readl(socket, CB_SOCKET_EVENT); + cb_writel(socket, CB_SOCKET_EVENT, cb_event); + + csc = exca_readb(socket, I365_CSC); + + events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ; + events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0; + if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { + events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0; + } else { + events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0; + events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0; + events |= (csc & I365_CSC_READY) ? SS_READY : 0; + } + return events; +} + + +static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + unsigned int events; + struct yenta_socket *socket = (struct yenta_socket *) dev_id; + + events = yenta_events(socket); + if (events) { + pcmcia_parse_events(&socket->socket, events); + return IRQ_HANDLED; + } + return IRQ_NONE; +} + +static void yenta_interrupt_wrapper(unsigned long data) +{ + struct yenta_socket *socket = (struct yenta_socket *) data; + + yenta_interrupt(0, (void *)socket, NULL); + socket->poll_timer.expires = jiffies + HZ; + add_timer(&socket->poll_timer); +} + +static void yenta_clear_maps(struct yenta_socket *socket) +{ + int i; + struct resource res = { .start = 0, .end = 0x0fff }; + pccard_io_map io = { 0, 0, 0, 0, 1 }; + pccard_mem_map mem = { .res = &res, }; + + yenta_set_socket(&socket->socket, &dead_socket); + for (i = 0; i < 2; i++) { + io.map = i; + yenta_set_io_map(&socket->socket, &io); + } + for (i = 0; i < 5; i++) { + mem.map = i; + yenta_set_mem_map(&socket->socket, &mem); + } +} + +/* Called at resume and initialization events */ +static int yenta_sock_init(struct pcmcia_socket *sock) +{ + struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); + u32 state; + u16 bridge; + + bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR; + if (!socket->cb_irq) + bridge |= CB_BRIDGE_INTR; + config_writew(socket, CB_BRIDGE_CONTROL, bridge); + + exca_writeb(socket, I365_GBLCTL, 0x00); + exca_writeb(socket, I365_GENCTL, 0x00); + + /* Redo card voltage interrogation */ + state = cb_readl(socket, CB_SOCKET_STATE); + if (!(state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | + CB_3VCARD | CB_XVCARD | CB_YVCARD))) + cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST); + + yenta_clear_maps(socket); + + if (socket->type && socket->type->sock_init) + socket->type->sock_init(socket); + + /* Re-enable CSC interrupts */ + cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); + + return 0; +} + +static int yenta_sock_suspend(struct pcmcia_socket *sock) +{ + struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); + + /* Disable CSC interrupts */ + cb_writel(socket, CB_SOCKET_MASK, 0x0); + + return 0; +} + +/* + * Use an adaptive allocation for the memory resource, + * sometimes the memory behind pci bridges is limited: + * 1/8 of the size of the io window of the parent. + * max 4 MB, min 16 kB. + */ +#define BRIDGE_MEM_MAX 4*1024*1024 +#define BRIDGE_MEM_MIN 16*1024 + +#define BRIDGE_IO_MAX 256 +#define BRIDGE_IO_MIN 32 + +#ifndef PCIBIOS_MIN_CARDBUS_IO +#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO +#endif + +static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type) +{ + struct pci_bus *bus; + struct resource *root, *res; + u32 start, end; + u32 align, size, min; + unsigned offset; + unsigned mask; + + /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ + mask = ~0xfff; + if (type & IORESOURCE_IO) + mask = ~3; + + offset = 0x1c + 8*nr; + bus = socket->dev->subordinate; + res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; + res->name = bus->name; + res->flags = type; + res->start = 0; + res->end = 0; + root = pci_find_parent_resource(socket->dev, res); + + if (!root) + return; + + start = config_readl(socket, offset) & mask; + end = config_readl(socket, offset+4) | ~mask; + if (start && end > start && !override_bios) { + res->start = start; + res->end = end; + if (request_resource(root, res) == 0) + return; + printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n", + pci_name(socket->dev), nr); + res->start = res->end = 0; + } + + if (type & IORESOURCE_IO) { + align = 1024; + size = BRIDGE_IO_MAX; + min = BRIDGE_IO_MIN; + start = PCIBIOS_MIN_CARDBUS_IO; + end = ~0U; + } else { + unsigned long avail = root->end - root->start; + int i; + size = BRIDGE_MEM_MAX; + if (size > avail/8) { + size=(avail+1)/8; + /* round size down to next power of 2 */ + i = 0; + while ((size /= 2) != 0) + i++; + size = 1 << i; + } + if (size < BRIDGE_MEM_MIN) + size = BRIDGE_MEM_MIN; + min = BRIDGE_MEM_MIN; + align = size; + start = PCIBIOS_MIN_MEM; + end = ~0U; + } + + do { + if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) { + config_writel(socket, offset, res->start); + config_writel(socket, offset+4, res->end); + return; + } + size = size/2; + align = size; + } while (size >= min); + printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n", + pci_name(socket->dev), type); + res->start = res->end = 0; +} + +/* + * Allocate the bridge mappings for the device.. + */ +static void yenta_allocate_resources(struct yenta_socket *socket) +{ + yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH); + yenta_allocate_res(socket, 1, IORESOURCE_MEM); + yenta_allocate_res(socket, 2, IORESOURCE_IO); + yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */ +} + + +/* + * Free the bridge mappings for the device.. + */ +static void yenta_free_resources(struct yenta_socket *socket) +{ + int i; + for (i=0;i<4;i++) { + struct resource *res; + res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i; + if (res->start != 0 && res->end != 0) + release_resource(res); + res->start = res->end = 0; + } +} + + +/* + * Close it down - release our resources and go home.. + */ +static void yenta_close(struct pci_dev *dev) +{ + struct yenta_socket *sock = pci_get_drvdata(dev); + + /* we don't want a dying socket registered */ + pcmcia_unregister_socket(&sock->socket); + + /* Disable all events so we don't die in an IRQ storm */ + cb_writel(sock, CB_SOCKET_MASK, 0x0); + exca_writeb(sock, I365_CSCINT, 0); + + if (sock->cb_irq) + free_irq(sock->cb_irq, sock); + else + del_timer_sync(&sock->poll_timer); + + if (sock->base) + iounmap(sock->base); + yenta_free_resources(sock); + + pci_release_regions(dev); + pci_disable_device(dev); + pci_set_drvdata(dev, NULL); +} + + +static struct pccard_operations yenta_socket_operations = { + .init = yenta_sock_init, + .suspend = yenta_sock_suspend, + .get_status = yenta_get_status, + .get_socket = yenta_get_socket, + .set_socket = yenta_set_socket, + .set_io_map = yenta_set_io_map, + .set_mem_map = yenta_set_mem_map, +}; + + +#include "ti113x.h" +#include "ricoh.h" +#include "topic.h" +#include "o2micro.h" + +enum { + CARDBUS_TYPE_DEFAULT = -1, + CARDBUS_TYPE_TI, + CARDBUS_TYPE_TI113X, + CARDBUS_TYPE_TI12XX, + CARDBUS_TYPE_TI1250, + CARDBUS_TYPE_RICOH, + CARDBUS_TYPE_TOPIC97, + CARDBUS_TYPE_O2MICRO, +}; + +/* + * Different cardbus controllers have slightly different + * initialization sequences etc details. List them here.. + */ +static struct cardbus_type cardbus_type[] = { + [CARDBUS_TYPE_TI] = { + .override = ti_override, + .save_state = ti_save_state, + .restore_state = ti_restore_state, + .sock_init = ti_init, + }, + [CARDBUS_TYPE_TI113X] = { + .override = ti113x_override, + .save_state = ti_save_state, + .restore_state = ti_restore_state, + .sock_init = ti_init, + }, + [CARDBUS_TYPE_TI12XX] = { + .override = ti12xx_override, + .save_state = ti_save_state, + .restore_state = ti_restore_state, + .sock_init = ti_init, + }, + [CARDBUS_TYPE_TI1250] = { + .override = ti1250_override, + .save_state = ti_save_state, + .restore_state = ti_restore_state, + .sock_init = ti_init, + }, + [CARDBUS_TYPE_RICOH] = { + .override = ricoh_override, + .save_state = ricoh_save_state, + .restore_state = ricoh_restore_state, + }, + [CARDBUS_TYPE_TOPIC97] = { + .override = topic97_override, + }, + [CARDBUS_TYPE_O2MICRO] = { + .override = o2micro_override, + .restore_state = o2micro_restore_state, + }, +}; + + +/* + * Only probe "regular" interrupts, don't + * touch dangerous spots like the mouse irq, + * because there are mice that apparently + * get really confused if they get fondled + * too intimately. + * + * Default to 11, 10, 9, 7, 6, 5, 4, 3. + */ +static u32 isa_interrupts = 0x0ef8; + +static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask) +{ + int i; + unsigned long val; + u16 bridge_ctrl; + u32 mask; + + /* Set up ISA irq routing to probe the ISA irqs.. */ + bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); + if (!(bridge_ctrl & CB_BRIDGE_INTR)) { + bridge_ctrl |= CB_BRIDGE_INTR; + config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); + } + + /* + * Probe for usable interrupts using the force + * register to generate bogus card status events. + */ + cb_writel(socket, CB_SOCKET_EVENT, -1); + cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); + exca_writeb(socket, I365_CSCINT, 0); + val = probe_irq_on() & isa_irq_mask; + for (i = 1; i < 16; i++) { + if (!((val >> i) & 1)) + continue; + exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4)); + cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); + udelay(100); + cb_writel(socket, CB_SOCKET_EVENT, -1); + } + cb_writel(socket, CB_SOCKET_MASK, 0); + exca_writeb(socket, I365_CSCINT, 0); + + mask = probe_irq_mask(val) & 0xffff; + + bridge_ctrl &= ~CB_BRIDGE_INTR; + config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); + + return mask; +} + + +/* interrupt handler, only used during probing */ +static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + struct yenta_socket *socket = (struct yenta_socket *) dev_id; + u8 csc; + u32 cb_event; + + /* Clear interrupt status for the event */ + cb_event = cb_readl(socket, CB_SOCKET_EVENT); + cb_writel(socket, CB_SOCKET_EVENT, -1); + csc = exca_readb(socket, I365_CSC); + + if (cb_event || csc) { + socket->probe_status = 1; + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + +/* probes the PCI interrupt, use only on override functions */ +static int yenta_probe_cb_irq(struct yenta_socket *socket) +{ + u16 bridge_ctrl; + + if (!socket->cb_irq) + return -1; + + socket->probe_status = 0; + + /* disable ISA interrupts */ + bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); + bridge_ctrl &= ~CB_BRIDGE_INTR; + config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); + + if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) { + printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n"); + return -1; + } + + /* generate interrupt, wait */ + exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG); + cb_writel(socket, CB_SOCKET_EVENT, -1); + cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); + cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); + + msleep(100); + + /* disable interrupts */ + cb_writel(socket, CB_SOCKET_MASK, 0); + exca_writeb(socket, I365_CSCINT, 0); + cb_writel(socket, CB_SOCKET_EVENT, -1); + exca_readb(socket, I365_CSC); + + free_irq(socket->cb_irq, socket); + + return (int) socket->probe_status; +} + + + +/* + * Set static data that doesn't need re-initializing.. + */ +static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask) +{ + socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS; + socket->socket.map_size = 0x1000; + socket->socket.pci_irq = socket->cb_irq; + socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask); + socket->socket.cb_dev = socket->dev; + + printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n", + socket->socket.irq_mask, socket->cb_irq); +} + +/* + * Initialize the standard cardbus registers + */ +static void yenta_config_init(struct yenta_socket *socket) +{ + u16 bridge; + struct pci_dev *dev = socket->dev; + + pci_set_power_state(socket->dev, 0); + + config_writel(socket, CB_LEGACY_MODE_BASE, 0); + config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start); + config_writew(socket, PCI_COMMAND, + PCI_COMMAND_IO | + PCI_COMMAND_MEMORY | + PCI_COMMAND_MASTER | + PCI_COMMAND_WAIT); + + /* MAGIC NUMBERS! Fixme */ + config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4); + config_writeb(socket, PCI_LATENCY_TIMER, 168); + config_writel(socket, PCI_PRIMARY_BUS, + (176 << 24) | /* sec. latency timer */ + (dev->subordinate->subordinate << 16) | /* subordinate bus */ + (dev->subordinate->secondary << 8) | /* secondary bus */ + dev->subordinate->primary); /* primary bus */ + + /* + * Set up the bridging state: + * - enable write posting. + * - memory window 0 prefetchable, window 1 non-prefetchable + * - PCI interrupts enabled if a PCI interrupt exists.. + */ + bridge = config_readw(socket, CB_BRIDGE_CONTROL); + bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN); + bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR; + config_writew(socket, CB_BRIDGE_CONTROL, bridge); +} + +/* + * Initialize a cardbus controller. Make sure we have a usable + * interrupt, and that we can map the cardbus area. Fill in the + * socket information structure.. + */ +static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id) +{ + struct yenta_socket *socket; + int ret; + + socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL); + if (!socket) + return -ENOMEM; + memset(socket, 0, sizeof(*socket)); + + /* prepare pcmcia_socket */ + socket->socket.ops = ¥ta_socket_operations; + socket->socket.resource_ops = &pccard_nonstatic_ops; + socket->socket.dev.dev = &dev->dev; + socket->socket.driver_data = socket; + socket->socket.owner = THIS_MODULE; + + /* prepare struct yenta_socket */ + socket->dev = dev; + pci_set_drvdata(dev, socket); + + /* + * Do some basic sanity checking.. + */ + if (pci_enable_device(dev)) { + ret = -EBUSY; + goto free; + } + + ret = pci_request_regions(dev, "yenta_socket"); + if (ret) + goto disable; + + if (!pci_resource_start(dev, 0)) { + printk(KERN_ERR "No cardbus resource!\n"); + ret = -ENODEV; + goto release; + } + + /* + * Ok, start setup.. Map the cardbus registers, + * and request the IRQ. + */ + socket->base = ioremap(pci_resource_start(dev, 0), 0x1000); + if (!socket->base) { + ret = -ENOMEM; + goto release; + } + + /* + * report the subsystem vendor and device for help debugging + * the irq stuff... + */ + printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n", + pci_name(dev), dev->subsystem_vendor, dev->subsystem_device); + + yenta_config_init(socket); + + /* Disable all events */ + cb_writel(socket, CB_SOCKET_MASK, 0x0); + + /* Set up the bridge regions.. */ + yenta_allocate_resources(socket); + + socket->cb_irq = dev->irq; + + /* Do we have special options for the device? */ + if (id->driver_data != CARDBUS_TYPE_DEFAULT && + id->driver_data < ARRAY_SIZE(cardbus_type)) { + socket->type = &cardbus_type[id->driver_data]; + + ret = socket->type->override(socket); + if (ret < 0) + goto unmap; + } + + /* We must finish initialization here */ + + if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) { + /* No IRQ or request_irq failed. Poll */ + socket->cb_irq = 0; /* But zero is a valid IRQ number. */ + init_timer(&socket->poll_timer); + socket->poll_timer.function = yenta_interrupt_wrapper; + socket->poll_timer.data = (unsigned long)socket; + socket->poll_timer.expires = jiffies + HZ; + add_timer(&socket->poll_timer); + } + + /* Figure out what the dang thing can do for the PCMCIA layer... */ + yenta_get_socket_capabilities(socket, isa_interrupts); + printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE)); + + /* Register it with the pcmcia layer.. */ + ret = pcmcia_register_socket(&socket->socket); + if (ret == 0) + goto out; + + unmap: + iounmap(socket->base); + release: + pci_release_regions(dev); + disable: + pci_disable_device(dev); + free: + kfree(socket); + out: + return ret; +} + + +static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state) +{ + struct yenta_socket *socket = pci_get_drvdata(dev); + int ret; + + ret = pcmcia_socket_dev_suspend(&dev->dev, state); + + if (socket) { + if (socket->type && socket->type->save_state) + socket->type->save_state(socket); + + /* FIXME: pci_save_state needs to have a better interface */ + pci_save_state(dev); + pci_read_config_dword(dev, 16*4, &socket->saved_state[0]); + pci_read_config_dword(dev, 17*4, &socket->saved_state[1]); + + /* + * Some laptops (IBM T22) do not like us putting the Cardbus + * bridge into D3. At a guess, some other laptop will + * probably require this, so leave it commented out for now. + */ + /* pci_set_power_state(dev, 3); */ + } + + return ret; +} + + +static int yenta_dev_resume (struct pci_dev *dev) +{ + struct yenta_socket *socket = pci_get_drvdata(dev); + + if (socket) { + pci_set_power_state(dev, 0); + /* FIXME: pci_restore_state needs to have a better interface */ + pci_restore_state(dev); + pci_write_config_dword(dev, 16*4, socket->saved_state[0]); + pci_write_config_dword(dev, 17*4, socket->saved_state[1]); + + if (socket->type && socket->type->restore_state) + socket->type->restore_state(socket); + } + + return pcmcia_socket_dev_resume(&dev->dev); +} + + +#define CB_ID(vend,dev,type) \ + { \ + .vendor = vend, \ + .device = dev, \ + .subvendor = PCI_ANY_ID, \ + .subdevice = PCI_ANY_ID, \ + .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \ + .class_mask = ~0, \ + .driver_data = CARDBUS_TYPE_##type, \ + } + +static struct pci_device_id yenta_table [] = { + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI), + + /* + * TBD: Check if these TI variants can use more + * advanced overrides instead. (I can't get the + * data sheets for these devices. --rmk) + */ + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI), + + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X), + + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX), + + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250), + + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX), + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX), + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250), + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX), + + CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH), + CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH), + CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH), + CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH), + CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH), + + CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97), + CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97), + + CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO), + + /* match any cardbus bridge */ + CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT), + { /* all zeroes */ } +}; +MODULE_DEVICE_TABLE(pci, yenta_table); + + +static struct pci_driver yenta_cardbus_driver = { + .name = "yenta_cardbus", + .id_table = yenta_table, + .probe = yenta_probe, + .remove = __devexit_p(yenta_close), + .suspend = yenta_dev_suspend, + .resume = yenta_dev_resume, +}; + + +static int __init yenta_socket_init(void) +{ + return pci_register_driver (¥ta_cardbus_driver); +} + + +static void __exit yenta_socket_exit (void) +{ + pci_unregister_driver (¥ta_cardbus_driver); +} + + +module_init(yenta_socket_init); +module_exit(yenta_socket_exit); + +MODULE_LICENSE("GPL"); |