diff options
author | Arvid Brodin <arvid.brodin@enea.com> | 2011-02-26 22:04:40 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-01 04:23:37 +0100 |
commit | a041d8e4375ee6d78409a721221878dcad5eff8a (patch) | |
tree | 9749f4c0e373aace706ac037b2b535e1427ba31a /drivers/usb/host/isp1760-hcd.c | |
parent | usb/isp1760: Remove redundant variables and defines (diff) | |
download | linux-a041d8e4375ee6d78409a721221878dcad5eff8a.tar.xz linux-a041d8e4375ee6d78409a721221878dcad5eff8a.zip |
usb/isp1760: Clean up payload address handling
Encapsulate payload addresses within qtds.
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/isp1760-hcd.c')
-rw-r--r-- | drivers/usb/host/isp1760-hcd.c | 197 |
1 files changed, 93 insertions, 104 deletions
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index 2342f11d0f30..cfb8e8ab9338 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -85,6 +85,8 @@ struct isp1760_qtd { u8 toggle; void *data_buffer; + u32 payload_addr; + /* the rest is HCD-private */ struct list_head qtd_list; struct urb *urb; @@ -256,54 +258,56 @@ static void ptd_write(void __iomem *base, u32 ptd_offset, u32 slot, /* memory management of the 60kb on the chip from 0x1000 to 0xffff */ static void init_memory(struct isp1760_hcd *priv) { - int i; - u32 payload; + int i, curr; + u32 payload_addr; - payload = 0x1000; + payload_addr = PAYLOAD_OFFSET; for (i = 0; i < BLOCK_1_NUM; i++) { - priv->memory_pool[i].start = payload; + priv->memory_pool[i].start = payload_addr; priv->memory_pool[i].size = BLOCK_1_SIZE; priv->memory_pool[i].free = 1; - payload += priv->memory_pool[i].size; + payload_addr += priv->memory_pool[i].size; } - - for (i = BLOCK_1_NUM; i < BLOCK_1_NUM + BLOCK_2_NUM; i++) { - priv->memory_pool[i].start = payload; - priv->memory_pool[i].size = BLOCK_2_SIZE; - priv->memory_pool[i].free = 1; - payload += priv->memory_pool[i].size; + curr = i; + for (i = 0; i < BLOCK_2_NUM; i++) { + priv->memory_pool[curr + i].start = payload_addr; + priv->memory_pool[curr + i].size = BLOCK_2_SIZE; + priv->memory_pool[curr + i].free = 1; + payload_addr += priv->memory_pool[curr + i].size; } - - for (i = BLOCK_1_NUM + BLOCK_2_NUM; i < BLOCKS; i++) { - priv->memory_pool[i].start = payload; - priv->memory_pool[i].size = BLOCK_3_SIZE; - priv->memory_pool[i].free = 1; - payload += priv->memory_pool[i].size; + curr = i; + for (i = 0; i < BLOCK_3_NUM; i++) { + priv->memory_pool[curr + i].start = payload_addr; + priv->memory_pool[curr + i].size = BLOCK_3_SIZE; + priv->memory_pool[curr + i].free = 1; + payload_addr += priv->memory_pool[curr + i].size; } - BUG_ON(payload - priv->memory_pool[i - 1].size > PAYLOAD_SIZE); + BUG_ON(payload_addr - priv->memory_pool[0].start > PAYLOAD_AREA_SIZE); } -static u32 alloc_mem(struct isp1760_hcd *priv, u32 size) +static void alloc_mem(struct isp1760_hcd *priv, struct isp1760_qtd *qtd) { int i; - if (!size) - return ISP1760_NULL_POINTER; + BUG_ON(qtd->payload_addr); + + if (!qtd->length) + return; for (i = 0; i < BLOCKS; i++) { - if (priv->memory_pool[i].size >= size && + if (priv->memory_pool[i].size >= qtd->length && priv->memory_pool[i].free) { - priv->memory_pool[i].free = 0; - return priv->memory_pool[i].start; + qtd->payload_addr = priv->memory_pool[i].start; + return; } } - printk(KERN_ERR "ISP1760 MEM: can not allocate %d bytes of memory\n", - size); + printk(KERN_ERR "ISP1760 MEM: can not allocate %lu bytes of memory\n", + qtd->length); printk(KERN_ERR "Current memory map:\n"); for (i = 0; i < BLOCKS; i++) { printk(KERN_ERR "Pool %2d size %4d status: %d\n", @@ -312,28 +316,27 @@ static u32 alloc_mem(struct isp1760_hcd *priv, u32 size) } /* XXX maybe -ENOMEM could be possible */ BUG(); - return 0; + return; } -static void free_mem(struct isp1760_hcd *priv, u32 mem) +static void free_mem(struct isp1760_hcd *priv, struct isp1760_qtd *qtd) { int i; - if (mem == ISP1760_NULL_POINTER) + if (!qtd->payload_addr) return; for (i = 0; i < BLOCKS; i++) { - if (priv->memory_pool[i].start == mem) { - + if (priv->memory_pool[i].start == qtd->payload_addr) { BUG_ON(priv->memory_pool[i].free); - priv->memory_pool[i].free = 1; - return ; + qtd->payload_addr = 0; + return; } } - printk(KERN_ERR "Trying to free not-here-allocated memory :%08x\n", - mem); + printk(KERN_ERR "%s: Invalid pointer: %08x\n", __func__, + qtd->payload_addr); BUG(); } @@ -596,8 +599,7 @@ static u32 base_to_chip(u32 base) } static void transform_into_atl(struct isp1760_hcd *priv, struct isp1760_qh *qh, - struct isp1760_qtd *qtd, struct urb *urb, - u32 payload, struct ptd *ptd) + struct isp1760_qtd *qtd, struct ptd *ptd) { u32 maxpacket; u32 multi; @@ -608,7 +610,8 @@ static void transform_into_atl(struct isp1760_hcd *priv, struct isp1760_qh *qh, memset(ptd, 0, sizeof(*ptd)); /* according to 3.6.2, max packet len can not be > 0x400 */ - maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); + maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe, + usb_pipeout(qtd->urb->pipe)); multi = 1 + ((maxpacket >> 11) & 0x3); maxpacket &= 0x7ff; @@ -616,33 +619,33 @@ static void transform_into_atl(struct isp1760_hcd *priv, struct isp1760_qh *qh, ptd->dw0 = PTD_VALID; ptd->dw0 |= PTD_LENGTH(qtd->length); ptd->dw0 |= PTD_MAXPACKET(maxpacket); - ptd->dw0 |= PTD_ENDPOINT(usb_pipeendpoint(urb->pipe)); - ptd->dw1 = usb_pipeendpoint(urb->pipe) >> 1; + ptd->dw0 |= PTD_ENDPOINT(usb_pipeendpoint(qtd->urb->pipe)); /* DW1 */ - ptd->dw1 |= PTD_DEVICE_ADDR(usb_pipedevice(urb->pipe)); + ptd->dw1 = usb_pipeendpoint(qtd->urb->pipe) >> 1; + ptd->dw1 |= PTD_DEVICE_ADDR(usb_pipedevice(qtd->urb->pipe)); pid_code = qtd->packet_type; ptd->dw1 |= PTD_PID_TOKEN(pid_code); - if (usb_pipebulk(urb->pipe)) + if (usb_pipebulk(qtd->urb->pipe)) ptd->dw1 |= PTD_TRANS_BULK; - else if (usb_pipeint(urb->pipe)) + else if (usb_pipeint(qtd->urb->pipe)) ptd->dw1 |= PTD_TRANS_INT; - if (urb->dev->speed != USB_SPEED_HIGH) { + if (qtd->urb->dev->speed != USB_SPEED_HIGH) { /* split transaction */ ptd->dw1 |= PTD_TRANS_SPLIT; - if (urb->dev->speed == USB_SPEED_LOW) + if (qtd->urb->dev->speed == USB_SPEED_LOW) ptd->dw1 |= PTD_SE_USB_LOSPEED; - ptd->dw1 |= PTD_PORT_NUM(urb->dev->ttport); - ptd->dw1 |= PTD_HUB_NUM(urb->dev->tt->hub->devnum); + ptd->dw1 |= PTD_PORT_NUM(qtd->urb->dev->ttport); + ptd->dw1 |= PTD_HUB_NUM(qtd->urb->dev->tt->hub->devnum); /* SE bit for Split INT transfers */ - if (usb_pipeint(urb->pipe) && - (urb->dev->speed == USB_SPEED_LOW)) + if (usb_pipeint(qtd->urb->pipe) && + (qtd->urb->dev->speed == USB_SPEED_LOW)) ptd->dw1 |= 2 << 16; ptd->dw3 = 0; @@ -650,19 +653,20 @@ static void transform_into_atl(struct isp1760_hcd *priv, struct isp1760_qh *qh, nak = 0; } else { ptd->dw0 |= PTD_MULTI(multi); - if (usb_pipecontrol(urb->pipe) || usb_pipebulk(urb->pipe)) + if (usb_pipecontrol(qtd->urb->pipe) || + usb_pipebulk(qtd->urb->pipe)) ptd->dw3 = qh->ping; else ptd->dw3 = 0; } /* DW2 */ ptd->dw2 = 0; - ptd->dw2 |= PTD_DATA_START_ADDR(base_to_chip(payload)); + ptd->dw2 |= PTD_DATA_START_ADDR(base_to_chip(qtd->payload_addr)); ptd->dw2 |= PTD_RL_CNT(rl); ptd->dw3 |= PTD_NAC_CNT(nak); /* DW3 */ - if (usb_pipecontrol(urb->pipe)) + if (usb_pipecontrol(qtd->urb->pipe)) ptd->dw3 |= PTD_DATA_TOGGLE(qtd->toggle); else ptd->dw3 |= qh->toggle; @@ -674,8 +678,7 @@ static void transform_into_atl(struct isp1760_hcd *priv, struct isp1760_qh *qh, } static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, - struct isp1760_qtd *qtd, struct urb *urb, - u32 payload, struct ptd *ptd) + struct isp1760_qtd *qtd, struct ptd *ptd) { u32 maxpacket; u32 multi; @@ -684,14 +687,15 @@ static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, u32 usofmask, usof; u32 period; - maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); + maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe, + usb_pipeout(qtd->urb->pipe)); multi = 1 + ((maxpacket >> 11) & 0x3); maxpacket &= 0x7ff; /* length of the data per uframe */ maxpacket = multi * maxpacket; - numberofusofs = urb->transfer_buffer_length / maxpacket; - if (urb->transfer_buffer_length % maxpacket) + numberofusofs = qtd->urb->transfer_buffer_length / maxpacket; + if (qtd->urb->transfer_buffer_length % maxpacket) numberofusofs += 1; usofmask = 1; @@ -701,7 +705,7 @@ static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, usofmask <<= 1; } - if (urb->dev->speed != USB_SPEED_HIGH) { + if (qtd->urb->dev->speed != USB_SPEED_HIGH) { /* split */ ptd->dw5 = 0x1c; @@ -735,11 +739,10 @@ static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, } static void transform_into_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, - struct isp1760_qtd *qtd, struct urb *urb, - u32 payload, struct ptd *ptd) + struct isp1760_qtd *qtd, struct ptd *ptd) { - transform_into_atl(priv, qh, qtd, urb, payload, ptd); - transform_add_int(priv, qh, qtd, urb, payload, ptd); + transform_into_atl(priv, qh, qtd, ptd); + transform_add_int(priv, qh, qtd, ptd); } static int qtd_fill(struct isp1760_qtd *qtd, void *databuffer, size_t len, @@ -751,8 +754,8 @@ static int qtd_fill(struct isp1760_qtd *qtd, void *databuffer, size_t len, qtd->packet_type = GET_QTD_TOKEN_TYPE(token); qtd->toggle = GET_DATA_TOGGLE(token); - if (len > HC_ATL_PL_SIZE) - count = HC_ATL_PL_SIZE; + if (len > MAX_PAYLOAD_SIZE) + count = MAX_PAYLOAD_SIZE; else count = len; @@ -804,60 +807,56 @@ static void check_int_err_status(u32 dw4) } } -static void enqueue_one_qtd(struct isp1760_qtd *qtd, struct isp1760_hcd *priv, - u32 payload) +static void enqueue_one_qtd(struct isp1760_qtd *qtd, struct isp1760_hcd *priv) { - u32 token; struct usb_hcd *hcd = priv_to_hcd(priv); - token = qtd->packet_type; - - if (qtd->length && (qtd->length <= HC_ATL_PL_SIZE)) { - switch (token) { + if (qtd->length && (qtd->length <= MAX_PAYLOAD_SIZE)) { + switch (qtd->packet_type) { case IN_PID: break; case OUT_PID: case SETUP_PID: - mem_writes8(hcd->regs, payload, qtd->data_buffer, - qtd->length); + mem_writes8(hcd->regs, qtd->payload_addr, + qtd->data_buffer, qtd->length); } } } -static void enqueue_one_atl_qtd(u32 payload, - struct isp1760_hcd *priv, struct isp1760_qh *qh, - struct urb *urb, u32 slot, struct isp1760_qtd *qtd) +static void enqueue_one_atl_qtd(struct isp1760_hcd *priv, + struct isp1760_qh *qh, u32 slot, + struct isp1760_qtd *qtd) { struct ptd ptd; struct usb_hcd *hcd = priv_to_hcd(priv); - transform_into_atl(priv, qh, qtd, urb, payload, &ptd); + alloc_mem(priv, qtd); + transform_into_atl(priv, qh, qtd, &ptd); ptd_write(hcd->regs, ATL_PTD_OFFSET, slot, &ptd); - enqueue_one_qtd(qtd, priv, payload); + enqueue_one_qtd(qtd, priv); priv->atl_ints[slot].qh = qh; priv->atl_ints[slot].qtd = qtd; priv->atl_ints[slot].data_buffer = qtd->data_buffer; - priv->atl_ints[slot].payload = payload; qtd->status |= URB_ENQUEUED; qtd->status |= slot << 16; } -static void enqueue_one_int_qtd(u32 payload, - struct isp1760_hcd *priv, struct isp1760_qh *qh, - struct urb *urb, u32 slot, struct isp1760_qtd *qtd) +static void enqueue_one_int_qtd(struct isp1760_hcd *priv, + struct isp1760_qh *qh, u32 slot, + struct isp1760_qtd *qtd) { struct ptd ptd; struct usb_hcd *hcd = priv_to_hcd(priv); - transform_into_int(priv, qh, qtd, urb, payload, &ptd); + alloc_mem(priv, qtd); + transform_into_int(priv, qh, qtd, &ptd); ptd_write(hcd->regs, INT_PTD_OFFSET, slot, &ptd); - enqueue_one_qtd(qtd, priv, payload); + enqueue_one_qtd(qtd, priv); priv->int_ints[slot].qh = qh; priv->int_ints[slot].qtd = qtd; priv->int_ints[slot].data_buffer = qtd->data_buffer; - priv->int_ints[slot].payload = payload; qtd->status |= URB_ENQUEUED; qtd->status |= slot << 16; } @@ -869,7 +868,6 @@ static void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, u32 skip_map, or_map; u32 queue_entry; u32 slot; - u32 payload; u32 buffstatus; /* @@ -886,9 +884,7 @@ static void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, slot = __ffs(skip_map); queue_entry = 1 << slot; - payload = alloc_mem(priv, qtd->length); - - enqueue_one_atl_qtd(payload, priv, qh, qtd->urb, slot, qtd); + enqueue_one_atl_qtd(priv, qh, slot, qtd); or_map = reg_read32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG); or_map |= queue_entry; @@ -914,7 +910,6 @@ static void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, u32 skip_map, or_map; u32 queue_entry; u32 slot; - u32 payload; u32 buffstatus; /* @@ -931,9 +926,7 @@ static void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, slot = __ffs(skip_map); queue_entry = 1 << slot; - payload = alloc_mem(priv, qtd->length); - - enqueue_one_int_qtd(payload, priv, qh, qtd->urb, slot, qtd); + enqueue_one_int_qtd(priv, qh, slot, qtd); or_map = reg_read32(hcd->regs, HC_INT_IRQ_MASK_OR_REG); or_map |= queue_entry; @@ -974,6 +967,7 @@ __acquires(priv->lock) static void isp1760_qtd_free(struct isp1760_qtd *qtd) { + BUG_ON(qtd->payload_addr); kmem_cache_free(qtd_cachep, qtd); } @@ -1029,7 +1023,6 @@ static void do_atl_int(struct usb_hcd *hcd) struct ptd ptd; struct urb *urb = NULL; u32 queue_entry; - u32 payload; u32 length; u32 or_map; u32 status = -EINVAL; @@ -1057,7 +1050,6 @@ static void do_atl_int(struct usb_hcd *hcd) qtd = priv->atl_ints[queue_entry].qtd; urb = qtd->urb; qh = priv->atl_ints[queue_entry].qh; - payload = priv->atl_ints[queue_entry].payload; if (!qh) { printk(KERN_ERR "qh is 0\n"); @@ -1154,7 +1146,7 @@ static void do_atl_int(struct usb_hcd *hcd) if (length) { switch (DW1_GET_PID(ptd.dw1)) { case IN_PID: - mem_reads8(hcd->regs, payload, + mem_reads8(hcd->regs, qtd->payload_addr, priv->atl_ints[queue_entry].data_buffer, length); @@ -1171,7 +1163,7 @@ static void do_atl_int(struct usb_hcd *hcd) priv->atl_ints[queue_entry].qtd = NULL; priv->atl_ints[queue_entry].qh = NULL; - free_mem(priv, payload); + free_mem(priv, qtd); reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, skip_map); @@ -1230,7 +1222,6 @@ static void do_intl_int(struct usb_hcd *hcd) u32 done_map, skip_map; struct ptd ptd; struct urb *urb = NULL; - u32 payload; u32 length; u32 or_map; int error; @@ -1253,7 +1244,6 @@ static void do_intl_int(struct usb_hcd *hcd) qtd = priv->int_ints[queue_entry].qtd; urb = qtd->urb; qh = priv->int_ints[queue_entry].qh; - payload = priv->int_ints[queue_entry].payload; if (!qh) { printk(KERN_ERR "(INT) qh is 0\n"); @@ -1292,7 +1282,7 @@ static void do_intl_int(struct usb_hcd *hcd) if (length) { switch (DW1_GET_PID(ptd.dw1)) { case IN_PID: - mem_reads8(hcd->regs, payload, + mem_reads8(hcd->regs, qtd->payload_addr, priv->int_ints[queue_entry].data_buffer, length); case OUT_PID: @@ -1309,7 +1299,7 @@ static void do_intl_int(struct usb_hcd *hcd) priv->int_ints[queue_entry].qh = NULL; reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, skip_map); - free_mem(priv, payload); + free_mem(priv, qtd); if (urb->status == -EPIPE) { /* HALT received */ @@ -1704,14 +1694,13 @@ static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, qtd = ints->qtd; qh = ints[i].qh; - qtd = clean_up_qtdlist(qtd, qh); - free_mem(priv, ints->payload); + free_mem(priv, qtd); + qtd = clean_up_qtdlist(qtd, qh); ints->qh = NULL; ints->qtd = NULL; ints->data_buffer = NULL; - ints->payload = 0; isp1760_urb_done(priv, urb, status); if (qtd) |