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USB: xhci: Endpoint representation refactoring.

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The xhci_ring structure contained information that is really related to an
endpoint, not a ring.  This will cause problems later when endpoint
streams are supported and there are multiple rings per endpoint.

Move the endpoint state and cancellation information into a new virtual
endpoint structure, xhci_virt_ep.  The list of TRBs to be cancelled should
be per endpoint, not per ring, for easy access.  There can be only one TRB
that the endpoint stopped on after a stop endpoint command (even with
streams enabled); move the stopped TRB information into the new virtual
endpoint structure.  Also move the 31 endpoint rings and temporary ring
storage from the virtual device structure (xhci_virt_device) into the
virtual endpoint structure (xhci_virt_ep).

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sarah Sharp 2009-09-04 10:53:09 -07:00 committed by Greg Kroah-Hartman
parent 9e221be815
commit 63a0d9abd1
4 changed files with 115 additions and 100 deletions
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59
drivers/usb/host/xhci-hcd.c
View File

@ -351,13 +351,14 @@ void xhci_event_ring_work(unsigned long arg)
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->devs[i])
continue;
for (j = 0; j < 31; ++j) {
struct xhci_ring *ring = xhci->devs[i]->eps[j].ring;
if (!ring)
continue;
xhci_dbg(xhci, "Dev %d endpoint ring %d:\n", i, j);
xhci_debug_segment(xhci, ring->deq_seg);
}
}
@ -778,6 +779,7 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
struct xhci_td *td;
unsigned int ep_index;
struct xhci_ring *ep_ring;
struct xhci_virt_ep *ep;
xhci = hcd_to_xhci(hcd);
spin_lock_irqsave(&xhci->lock, flags);
@ -790,17 +792,18 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
xhci_dbg(xhci, "Event ring:\n");
xhci_debug_ring(xhci, xhci->event_ring);
ep_index = xhci_get_endpoint_index(&urb->ep->desc);
ep_ring = xhci->devs[urb->dev->slot_id]->ep_rings[ep_index];
ep = &xhci->devs[urb->dev->slot_id]->eps[ep_index];
ep_ring = ep->ring;
xhci_dbg(xhci, "Endpoint ring:\n");
xhci_debug_ring(xhci, ep_ring);
td = (struct xhci_td *) urb->hcpriv;
ep_ring->cancels_pending++;
list_add_tail(&td->cancelled_td_list, &ep_ring->cancelled_td_list);
ep->cancels_pending++;
list_add_tail(&td->cancelled_td_list, &ep->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) {
if (ep->cancels_pending == 1) {
xhci_queue_stop_endpoint(xhci, urb->dev->slot_id, ep_index);
xhci_ring_cmd_db(xhci);
}
@ -1206,10 +1209,10 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
xhci_zero_in_ctx(xhci, 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;
if (virt_dev->eps[i].new_ring) {
xhci_ring_free(xhci, virt_dev->eps[i].ring);
virt_dev->eps[i].ring = virt_dev->eps[i].new_ring;
virt_dev->eps[i].new_ring = NULL;
}
}
@ -1236,9 +1239,9 @@ void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *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;
if (virt_dev->eps[i].new_ring) {
xhci_ring_free(xhci, virt_dev->eps[i].new_ring);
virt_dev->eps[i].new_ring = NULL;
}
}
xhci_zero_in_ctx(xhci, virt_dev);
@ -1281,17 +1284,18 @@ void xhci_setup_input_ctx_for_quirk(struct xhci_hcd *xhci,
}
void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
struct usb_device *udev,
unsigned int ep_index, struct xhci_ring *ep_ring)
struct usb_device *udev, unsigned int ep_index)
{
struct xhci_dequeue_state deq_state;
struct xhci_virt_ep *ep;
xhci_dbg(xhci, "Cleaning up stalled endpoint ring\n");
ep = &xhci->devs[udev->slot_id]->eps[ep_index];
/* We need to move the HW's dequeue pointer past this TD,
* or it will attempt to resend it on the next doorbell ring.
*/
xhci_find_new_dequeue_state(xhci, udev->slot_id,
ep_index, ep_ring->stopped_td,
ep_index, ep->stopped_td,
&deq_state);
/* HW with the reset endpoint quirk will use the saved dequeue state to
@ -1299,8 +1303,7 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
*/
if (!(xhci->quirks & XHCI_RESET_EP_QUIRK)) {
xhci_dbg(xhci, "Queueing new dequeue state\n");
xhci_queue_new_dequeue_state(xhci, ep_ring,
udev->slot_id,
xhci_queue_new_dequeue_state(xhci, udev->slot_id,
ep_index, &deq_state);
} else {
/* Better hope no one uses the input context between now and the
@ -1327,7 +1330,7 @@ void xhci_endpoint_reset(struct usb_hcd *hcd,
unsigned int ep_index;
unsigned long flags;
int ret;
struct xhci_ring *ep_ring;
struct xhci_virt_ep *virt_ep;
xhci = hcd_to_xhci(hcd);
udev = (struct usb_device *) ep->hcpriv;
@ -1337,8 +1340,8 @@ void xhci_endpoint_reset(struct usb_hcd *hcd,
if (!ep->hcpriv)
return;
ep_index = xhci_get_endpoint_index(&ep->desc);
ep_ring = xhci->devs[udev->slot_id]->ep_rings[ep_index];
if (!ep_ring->stopped_td) {
virt_ep = &xhci->devs[udev->slot_id]->eps[ep_index];
if (!virt_ep->stopped_td) {
xhci_dbg(xhci, "Endpoint 0x%x not halted, refusing to reset.\n",
ep->desc.bEndpointAddress);
return;
@ -1357,8 +1360,8 @@ void xhci_endpoint_reset(struct usb_hcd *hcd,
* command. Better hope that last command worked!
*/
if (!ret) {
xhci_cleanup_stalled_ring(xhci, udev, ep_index, ep_ring);
kfree(ep_ring->stopped_td);
xhci_cleanup_stalled_ring(xhci, udev, ep_index);
kfree(virt_ep->stopped_td);
xhci_ring_cmd_db(xhci);
}
spin_unlock_irqrestore(&xhci->lock, flags);

25
drivers/usb/host/xhci-mem.c
View File

@ -144,7 +144,6 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
return 0;
INIT_LIST_HEAD(&ring->td_list);
INIT_LIST_HEAD(&ring->cancelled_td_list);
if (num_segs == 0)
return ring;
@ -265,8 +264,8 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id)
return;
for (i = 0; i < 31; ++i)
if (dev->ep_rings[i])
xhci_ring_free(xhci, dev->ep_rings[i]);
if (dev->eps[i].ring)
xhci_ring_free(xhci, dev->eps[i].ring);
if (dev->in_ctx)
xhci_free_container_ctx(xhci, dev->in_ctx);
@ -281,6 +280,7 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
struct usb_device *udev, gfp_t flags)
{
struct xhci_virt_device *dev;
int i;
/* Slot ID 0 is reserved */
if (slot_id == 0 || xhci->devs[slot_id]) {
@ -309,9 +309,13 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
xhci_dbg(xhci, "Slot %d input ctx = 0x%llx (dma)\n", slot_id,
(unsigned long long)dev->in_ctx->dma);
/* Initialize the cancellation list for each endpoint */
for (i = 0; i < 31; i++)
INIT_LIST_HEAD(&dev->eps[i].cancelled_td_list);
/* Allocate endpoint 0 ring */
dev->ep_rings[0] = xhci_ring_alloc(xhci, 1, true, flags);
if (!dev->ep_rings[0])
dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, flags);
if (!dev->eps[0].ring)
goto fail;
init_completion(&dev->cmd_completion);
@ -428,8 +432,8 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
ep0_ctx->ep_info2 |= ERROR_COUNT(3);
ep0_ctx->deq =
dev->ep_rings[0]->first_seg->dma;
ep0_ctx->deq |= dev->ep_rings[0]->cycle_state;
dev->eps[0].ring->first_seg->dma;
ep0_ctx->deq |= dev->eps[0].ring->cycle_state;
/* Steps 7 and 8 were done in xhci_alloc_virt_device() */
@ -539,10 +543,11 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, 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])
virt_dev->eps[ep_index].new_ring =
xhci_ring_alloc(xhci, 1, true, mem_flags);
if (!virt_dev->eps[ep_index].new_ring)
return -ENOMEM;
ep_ring = virt_dev->new_ep_rings[ep_index];
ep_ring = virt_dev->eps[ep_index].new_ring;
ep_ctx->deq = ep_ring->first_seg->dma | ep_ring->cycle_state;
ep_ctx->ep_info = xhci_get_endpoint_interval(udev, ep);

90
drivers/usb/host/xhci-ring.c
View File

@ -296,16 +296,18 @@ static void ring_ep_doorbell(struct xhci_hcd *xhci,
unsigned int slot_id,
unsigned int ep_index)
{
struct xhci_ring *ep_ring;
struct xhci_virt_ep *ep;
unsigned int ep_state;
u32 field;
__u32 __iomem *db_addr = &xhci->dba->doorbell[slot_id];
ep_ring = xhci->devs[slot_id]->ep_rings[ep_index];
ep = &xhci->devs[slot_id]->eps[ep_index];
ep_state = ep->ep_state;
/* 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)
&& !(ep_ring->state & EP_HALTED)) {
if (!ep->cancels_pending && !(ep_state & SET_DEQ_PENDING)
&& !(ep_state & EP_HALTED)) {
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
@ -361,7 +363,7 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
struct xhci_td *cur_td, struct xhci_dequeue_state *state)
{
struct xhci_virt_device *dev = xhci->devs[slot_id];
struct xhci_ring *ep_ring = dev->ep_rings[ep_index];
struct xhci_ring *ep_ring = dev->eps[ep_index].ring;
struct xhci_generic_trb *trb;
struct xhci_ep_ctx *ep_ctx;
dma_addr_t addr;
@ -369,7 +371,7 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
state->new_cycle_state = 0;
xhci_dbg(xhci, "Finding segment containing stopped TRB.\n");
state->new_deq_seg = find_trb_seg(cur_td->start_seg,
ep_ring->stopped_trb,
dev->eps[ep_index].stopped_trb,
&state->new_cycle_state);
if (!state->new_deq_seg)
BUG();
@ -449,9 +451,11 @@ static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id,
union xhci_trb *deq_ptr, u32 cycle_state);
void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
struct xhci_ring *ep_ring, unsigned int slot_id,
unsigned int ep_index, struct xhci_dequeue_state *deq_state)
unsigned int slot_id, unsigned int ep_index,
struct xhci_dequeue_state *deq_state)
{
struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index];
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,
@ -468,7 +472,7 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
* if the ring is running, and ringing the doorbell starts the
* ring running.
*/
ep_ring->state |= SET_DEQ_PENDING;
ep->ep_state |= SET_DEQ_PENDING;
}
/*
@ -487,6 +491,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
unsigned int slot_id;
unsigned int ep_index;
struct xhci_ring *ep_ring;
struct xhci_virt_ep *ep;
struct list_head *entry;
struct xhci_td *cur_td = 0;
struct xhci_td *last_unlinked_td;
@ -499,9 +504,10 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
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];
ep = &xhci->devs[slot_id]->eps[ep_index];
ep_ring = ep->ring;
if (list_empty(&ep_ring->cancelled_td_list))
if (list_empty(&ep->cancelled_td_list))
return;
/* Fix up the ep ring first, so HW stops executing cancelled TDs.
@ -509,7 +515,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
* 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) {
list_for_each(entry, &ep->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,
@ -518,7 +524,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
* 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)
if (cur_td == ep->stopped_td)
xhci_find_new_dequeue_state(xhci, slot_id, ep_index, cur_td,
&deq_state);
else
@ -529,13 +535,13 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
* the cancelled TD list for URB completion later.
*/
list_del(&cur_td->td_list);
ep_ring->cancels_pending--;
ep->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_queue_new_dequeue_state(xhci, ep_ring,
xhci_queue_new_dequeue_state(xhci,
slot_id, ep_index, &deq_state);
xhci_ring_cmd_db(xhci);
} else {
@ -550,7 +556,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
* 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,
cur_td = list_entry(ep->cancelled_td_list.next,
struct xhci_td, cancelled_td_list);
list_del(&cur_td->cancelled_td_list);
@ -597,7 +603,7 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci,
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];
ep_ring = dev->eps[ep_index].ring;
ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
slot_ctx = xhci_get_slot_ctx(xhci, dev->out_ctx);
@ -641,7 +647,7 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci,
ep_ctx->deq);
}
ep_ring->state &= ~SET_DEQ_PENDING;
dev->eps[ep_index].ep_state &= ~SET_DEQ_PENDING;
ring_ep_doorbell(xhci, slot_id, ep_index);
}
@ -655,7 +661,7 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci,
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];
ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
/* This command will only fail if the endpoint wasn't halted,
* but we don't care.
*/
@ -673,7 +679,7 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci,
xhci_ring_cmd_db(xhci);
} else {
/* Clear our internal halted state and restart the ring */
ep_ring->state &= ~EP_HALTED;
xhci->devs[slot_id]->eps[ep_index].ep_state &= ~EP_HALTED;
ring_ep_doorbell(xhci, slot_id, ep_index);
}
}
@ -726,7 +732,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
xhci->devs[slot_id]->in_ctx);
/* Input ctx add_flags are the endpoint index plus one */
ep_index = xhci_last_valid_endpoint(ctrl_ctx->add_flags) - 1;
ep_ring = xhci->devs[slot_id]->ep_rings[ep_index];
ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
if (!ep_ring) {
/* This must have been an initial configure endpoint */
xhci->devs[slot_id]->cmd_status =
@ -734,13 +740,13 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
complete(&xhci->devs[slot_id]->cmd_completion);
break;
}
ep_state = ep_ring->state;
ep_state = xhci->devs[slot_id]->eps[ep_index].ep_state;
xhci_dbg(xhci, "Completed config ep cmd - last ep index = %d, "
"state = %d\n", ep_index, ep_state);
if (xhci->quirks & XHCI_RESET_EP_QUIRK &&
ep_state & EP_HALTED) {
/* Clear our internal halted state and restart ring */
xhci->devs[slot_id]->ep_rings[ep_index]->state &=
xhci->devs[slot_id]->eps[ep_index].ep_state &=
~EP_HALTED;
ring_ep_doorbell(xhci, slot_id, ep_index);
} else {
@ -864,6 +870,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
struct xhci_transfer_event *event)
{
struct xhci_virt_device *xdev;
struct xhci_virt_ep *ep;
struct xhci_ring *ep_ring;
unsigned int slot_id;
int ep_index;
@ -887,7 +894,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
/* Endpoint ID is 1 based, our index is zero based */
ep_index = TRB_TO_EP_ID(event->flags) - 1;
xhci_dbg(xhci, "%s - ep index = %d\n", __func__, ep_index);
ep_ring = xdev->ep_rings[ep_index];
ep = &xdev->eps[ep_index];
ep_ring = ep->ring;
ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index);
if (!ep_ring || (ep_ctx->ep_info & EP_STATE_MASK) == EP_STATE_DISABLED) {
xhci_err(xhci, "ERROR Transfer event pointed to disabled endpoint\n");
@ -948,7 +956,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
break;
case COMP_STALL:
xhci_warn(xhci, "WARN: Stalled endpoint\n");
ep_ring->state |= EP_HALTED;
ep->ep_state |= EP_HALTED;
status = -EPIPE;
break;
case COMP_TRB_ERR:
@ -1016,12 +1024,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
else
td->urb->actual_length = 0;
ep_ring->stopped_td = td;
ep_ring->stopped_trb = event_trb;
ep->stopped_td = td;
ep->stopped_trb = event_trb;
xhci_queue_reset_ep(xhci, slot_id, ep_index);
xhci_cleanup_stalled_ring(xhci,
td->urb->dev,
ep_index, ep_ring);
xhci_cleanup_stalled_ring(xhci, td->urb->dev, ep_index);
xhci_ring_cmd_db(xhci);
goto td_cleanup;
default:
@ -1161,8 +1167,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
* stopped TDs. A stopped TD may be restarted, so don't update
* the ring dequeue pointer or take this TD off any lists yet.
*/
ep_ring->stopped_td = td;
ep_ring->stopped_trb = event_trb;
ep->stopped_td = td;
ep->stopped_trb = event_trb;
} else {
if (trb_comp_code == COMP_STALL ||
trb_comp_code == COMP_BABBLE) {
@ -1172,8 +1178,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
* pointer past the TD. We can't do that here because
* the halt condition must be cleared first.
*/
ep_ring->stopped_td = td;
ep_ring->stopped_trb = event_trb;
ep->stopped_td = td;
ep->stopped_trb = event_trb;
} else {
/* Update ring dequeue pointer */
while (ep_ring->dequeue != td->last_trb)
@ -1206,7 +1212,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
/* 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--;
ep->cancels_pending--;
}
/* Leave the TD around for the reset endpoint function to use
* (but only if it's not a control endpoint, since we already
@ -1369,7 +1375,7 @@ static int prepare_transfer(struct xhci_hcd *xhci,
{
int ret;
struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index);
ret = prepare_ring(xhci, xdev->ep_rings[ep_index],
ret = prepare_ring(xhci, xdev->eps[ep_index].ring,
ep_ctx->ep_info & EP_STATE_MASK,
num_trbs, mem_flags);
if (ret)
@ -1389,9 +1395,9 @@ static int prepare_transfer(struct xhci_hcd *xhci,
(*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;
list_add_tail(&(*td)->td_list, &xdev->eps[ep_index].ring->td_list);
(*td)->start_seg = xdev->eps[ep_index].ring->enq_seg;
(*td)->first_trb = xdev->eps[ep_index].ring->enqueue;
return 0;
}
@ -1525,7 +1531,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
struct xhci_generic_trb *start_trb;
int start_cycle;
ep_ring = xhci->devs[slot_id]->ep_rings[ep_index];
ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
num_trbs = count_sg_trbs_needed(xhci, urb);
num_sgs = urb->num_sgs;
@ -1658,7 +1664,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
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];
ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
num_trbs = 0;
/* How much data is (potentially) left before the 64KB boundary? */
@ -1769,7 +1775,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
u32 field, length_field;
struct xhci_td *td;
ep_ring = xhci->devs[slot_id]->ep_rings[ep_index];
ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
/*
* Need to copy setup packet into setup TRB, so we can't use the setup

41
drivers/usb/host/xhci.h
View File

@ -625,6 +625,23 @@ struct xhci_input_control_ctx {
/* add context bitmasks */
#define ADD_EP(x) (0x1 << x)
struct xhci_virt_ep {
struct xhci_ring *ring;
/* 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_ring;
unsigned int ep_state;
#define SET_DEQ_PENDING (1 << 0)
#define EP_HALTED (1 << 1)
/* ---- Related to URB cancellation ---- */
struct list_head cancelled_td_list;
unsigned int cancels_pending;
/* The TRB that was last reported in a stopped endpoint ring */
union xhci_trb *stopped_trb;
struct xhci_td *stopped_td;
};
struct xhci_virt_device {
/*
* Commands to the hardware are passed an "input context" that
@ -637,13 +654,7 @@ struct xhci_virt_device {
struct xhci_container_ctx *out_ctx;
/* Used for addressing devices and configuration changes */
struct xhci_container_ctx *in_ctx;
/* 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 xhci_virt_ep eps[31];
struct completion cmd_completion;
/* Status of the last command issued for this device */
u32 cmd_status;
@ -945,15 +956,6 @@ struct xhci_ring {
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)
#define EP_HALTED (1 << 1)
/* 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
@ -1236,11 +1238,10 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
unsigned int slot_id, unsigned int ep_index,
struct xhci_td *cur_td, struct xhci_dequeue_state *state);
void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
struct xhci_ring *ep_ring, unsigned int slot_id,
unsigned int ep_index, struct xhci_dequeue_state *deq_state);
unsigned int slot_id, unsigned int ep_index,
struct xhci_dequeue_state *deq_state);
void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
struct usb_device *udev,
unsigned int ep_index, struct xhci_ring *ep_ring);
struct usb_device *udev, unsigned int ep_index);
void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci,
unsigned int slot_id, unsigned int ep_index,
struct xhci_dequeue_state *deq_state);