/* 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,
+static 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)
* 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,
+static 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->link.control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK);
}
-static inline int enqueue_is_link_trb(struct xhci_ring *ring)
+static int enqueue_is_link_trb(struct xhci_ring *ring)
{
struct xhci_link_trb *link = &ring->enqueue->link;
return ((link->control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK));
while (cur_seg->trbs > trb ||
&cur_seg->trbs[TRBS_PER_SEGMENT - 1] < trb) {
generic_trb = &cur_seg->trbs[TRBS_PER_SEGMENT - 1].generic;
- if ((generic_trb->field[3] & TRB_TYPE_BITMASK) ==
- TRB_TYPE(TRB_LINK) &&
- (generic_trb->field[3] & LINK_TOGGLE))
- *cycle_state = ~(*cycle_state) & 0x1;
+ if (generic_trb->field[3] & LINK_TOGGLE)
+ *cycle_state ^= 0x1;
cur_seg = cur_seg->next;
if (cur_seg == start_seg)
/* Looped over the entire list. Oops! */
trb = &state->new_deq_ptr->generic;
if ((trb->field[3] & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK) &&
(trb->field[3] & LINK_TOGGLE))
- state->new_cycle_state = ~(state->new_cycle_state) & 0x1;
+ state->new_cycle_state ^= 0x1;
next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr);
+ /*
+ * If there is only one segment in a ring, find_trb_seg()'s while loop
+ * will not run, and it will return before it has a chance to see if it
+ * needs to toggle the cycle bit. It can't tell if the stalled transfer
+ * ended just before the link TRB on a one-segment ring, or if the TD
+ * wrapped around the top of the ring, because it doesn't have the TD in
+ * question. Look for the one-segment case where stalled TRB's address
+ * is greater than the new dequeue pointer address.
+ */
+ if (ep_ring->first_seg == ep_ring->first_seg->next &&
+ state->new_deq_ptr < dev->eps[ep_index].stopped_trb)
+ state->new_cycle_state ^= 0x1;
+ xhci_dbg(xhci, "Cycle state = 0x%x\n", state->new_cycle_state);
+
/* Don't update the ring cycle state for the producer (us). */
xhci_dbg(xhci, "New dequeue segment = %p (virtual)\n",
state->new_deq_seg);
addr = xhci_trb_virt_to_dma(state->new_deq_seg, state->new_deq_ptr);
xhci_dbg(xhci, "New dequeue pointer = 0x%llx (DMA)\n",
(unsigned long long) addr);
- xhci_dbg(xhci, "Setting dequeue pointer in internal ring state.\n");
- 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,
ep->ep_state |= SET_DEQ_PENDING;
}
-static inline void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci,
+static void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci,
struct xhci_virt_ep *ep)
{
ep->ep_state &= ~EP_HALT_PENDING;
static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci,
struct xhci_td *cur_td, int status, char *adjective)
{
- struct usb_hcd *hcd = xhci_to_hcd(xhci);
+ struct usb_hcd *hcd;
struct urb *urb;
struct urb_priv *urb_priv;
urb = cur_td->urb;
urb_priv = urb->hcpriv;
urb_priv->td_cnt++;
+ hcd = bus_to_hcd(urb->dev->bus);
/* Only giveback urb when this is the last td in urb */
if (urb_priv->td_cnt == urb_priv->length) {
+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+ xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--;
+ if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) {
+ if (xhci->quirks & XHCI_AMD_PLL_FIX)
+ usb_amd_quirk_pll_enable();
+ }
+ }
usb_hcd_unlink_urb_from_ep(hcd, urb);
xhci_dbg(xhci, "Giveback %s URB %p\n", adjective, urb);
if (ret < 0) {
/* This is bad; the host is not responding to commands and it's
* not allowing itself to be halted. At least interrupts are
- * disabled, so we can set HC_STATE_HALT and notify the
- * USB core. But if we call usb_hc_died(), it will attempt to
+ * disabled. If we call usb_hc_died(), it will attempt to
* disconnect all device drivers under this host. Those
* disconnect() methods will wait for all URBs to be unlinked,
* so we must complete them.
}
}
spin_unlock(&xhci->lock);
- xhci_to_hcd(xhci)->state = HC_STATE_HALT;
xhci_dbg(xhci, "Calling usb_hc_died()\n");
- usb_hc_died(xhci_to_hcd(xhci));
+ usb_hc_died(xhci_to_hcd(xhci)->primary_hcd);
xhci_dbg(xhci, "xHCI host controller is dead.\n");
}
} else {
xhci_dbg(xhci, "Successful Set TR Deq Ptr cmd, deq = @%08llx\n",
ep_ctx->deq);
+ if (xhci_trb_virt_to_dma(dev->eps[ep_index].queued_deq_seg,
+ dev->eps[ep_index].queued_deq_ptr) ==
+ (ep_ctx->deq & ~(EP_CTX_CYCLE_MASK))) {
+ /* Update the ring's dequeue segment and dequeue pointer
+ * to reflect the new position.
+ */
+ ep_ring->deq_seg = dev->eps[ep_index].queued_deq_seg;
+ ep_ring->dequeue = dev->eps[ep_index].queued_deq_ptr;
+ } else {
+ xhci_warn(xhci, "Mismatch between completed Set TR Deq "
+ "Ptr command & xHCI internal state.\n");
+ xhci_warn(xhci, "ep deq seg = %p, deq ptr = %p\n",
+ dev->eps[ep_index].queued_deq_seg,
+ dev->eps[ep_index].queued_deq_ptr);
+ }
}
dev->eps[ep_index].ep_state &= ~SET_DEQ_PENDING;
+ dev->eps[ep_index].queued_deq_seg = NULL;
+ dev->eps[ep_index].queued_deq_ptr = NULL;
/* Restart any rings with pending URBs */
ring_doorbell_for_active_rings(xhci, slot_id, ep_index);
}
handle_set_deq_completion(xhci, event, xhci->cmd_ring->dequeue);
break;
case TRB_TYPE(TRB_CMD_NOOP):
- ++xhci->noops_handled;
break;
case TRB_TYPE(TRB_RESET_EP):
handle_reset_ep_completion(xhci, event, xhci->cmd_ring->dequeue);
handle_cmd_completion(xhci, &event->event_cmd);
}
+/* @port_id: the one-based port ID from the hardware (indexed from array of all
+ * port registers -- USB 3.0 and USB 2.0).
+ *
+ * Returns a zero-based port number, which is suitable for indexing into each of
+ * the split roothubs' port arrays and bus state arrays.
+ */
+static unsigned int find_faked_portnum_from_hw_portnum(struct usb_hcd *hcd,
+ struct xhci_hcd *xhci, u32 port_id)
+{
+ unsigned int i;
+ unsigned int num_similar_speed_ports = 0;
+
+ /* port_id from the hardware is 1-based, but port_array[], usb3_ports[],
+ * and usb2_ports are 0-based indexes. Count the number of similar
+ * speed ports, up to 1 port before this port.
+ */
+ for (i = 0; i < (port_id - 1); i++) {
+ u8 port_speed = xhci->port_array[i];
+
+ /*
+ * Skip ports that don't have known speeds, or have duplicate
+ * Extended Capabilities port speed entries.
+ */
+ if (port_speed == 0 || port_speed == DUPLICATE_ENTRY)
+ continue;
+
+ /*
+ * USB 3.0 ports are always under a USB 3.0 hub. USB 2.0 and
+ * 1.1 ports are under the USB 2.0 hub. If the port speed
+ * matches the device speed, it's a similar speed port.
+ */
+ if ((port_speed == 0x03) == (hcd->speed == HCD_USB3))
+ num_similar_speed_ports++;
+ }
+ return num_similar_speed_ports;
+}
+
static void handle_port_status(struct xhci_hcd *xhci,
union xhci_trb *event)
{
- struct usb_hcd *hcd = xhci_to_hcd(xhci);
+ struct usb_hcd *hcd;
u32 port_id;
u32 temp, temp1;
- u32 __iomem *addr;
- int ports;
+ int max_ports;
int slot_id;
+ unsigned int faked_port_index;
+ u8 major_revision;
+ struct xhci_bus_state *bus_state;
+ u32 __iomem **port_array;
+ bool bogus_port_status = false;
/* Port status change events always have a successful completion code */
if (GET_COMP_CODE(event->generic.field[2]) != COMP_SUCCESS) {
port_id = GET_PORT_ID(event->generic.field[0]);
xhci_dbg(xhci, "Port Status Change Event for port %d\n", port_id);
- ports = HCS_MAX_PORTS(xhci->hcs_params1);
- if ((port_id <= 0) || (port_id > ports)) {
+ max_ports = HCS_MAX_PORTS(xhci->hcs_params1);
+ if ((port_id <= 0) || (port_id > max_ports)) {
xhci_warn(xhci, "Invalid port id %d\n", port_id);
+ bogus_port_status = true;
goto cleanup;
}
- addr = &xhci->op_regs->port_status_base + NUM_PORT_REGS * (port_id - 1);
- temp = xhci_readl(xhci, addr);
+ /* Figure out which usb_hcd this port is attached to:
+ * is it a USB 3.0 port or a USB 2.0/1.1 port?
+ */
+ major_revision = xhci->port_array[port_id - 1];
+ if (major_revision == 0) {
+ xhci_warn(xhci, "Event for port %u not in "
+ "Extended Capabilities, ignoring.\n",
+ port_id);
+ bogus_port_status = true;
+ goto cleanup;
+ }
+ if (major_revision == DUPLICATE_ENTRY) {
+ xhci_warn(xhci, "Event for port %u duplicated in"
+ "Extended Capabilities, ignoring.\n",
+ port_id);
+ bogus_port_status = true;
+ goto cleanup;
+ }
+
+ /*
+ * Hardware port IDs reported by a Port Status Change Event include USB
+ * 3.0 and USB 2.0 ports. We want to check if the port has reported a
+ * resume event, but we first need to translate the hardware port ID
+ * into the index into the ports on the correct split roothub, and the
+ * correct bus_state structure.
+ */
+ /* Find the right roothub. */
+ hcd = xhci_to_hcd(xhci);
+ if ((major_revision == 0x03) != (hcd->speed == HCD_USB3))
+ hcd = xhci->shared_hcd;
+ bus_state = &xhci->bus_state[hcd_index(hcd)];
+ if (hcd->speed == HCD_USB3)
+ port_array = xhci->usb3_ports;
+ else
+ port_array = xhci->usb2_ports;
+ /* Find the faked port hub number */
+ faked_port_index = find_faked_portnum_from_hw_portnum(hcd, xhci,
+ port_id);
+
+ temp = xhci_readl(xhci, port_array[faked_port_index]);
if (hcd->state == HC_STATE_SUSPENDED) {
xhci_dbg(xhci, "resume root hub\n");
usb_hcd_resume_root_hub(hcd);
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_U0;
- xhci_writel(xhci, temp, addr);
- slot_id = xhci_find_slot_id_by_port(xhci, port_id);
+ xhci_writel(xhci, temp, port_array[faked_port_index]);
+ slot_id = xhci_find_slot_id_by_port(hcd, xhci,
+ faked_port_index);
if (!slot_id) {
xhci_dbg(xhci, "slot_id is zero\n");
goto cleanup;
xhci_ring_device(xhci, slot_id);
xhci_dbg(xhci, "resume SS port %d finished\n", port_id);
/* Clear PORT_PLC */
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[faked_port_index]);
temp = xhci_port_state_to_neutral(temp);
temp |= PORT_PLC;
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp, port_array[faked_port_index]);
} else {
xhci_dbg(xhci, "resume HS port %d\n", port_id);
- xhci->resume_done[port_id - 1] = jiffies +
+ bus_state->resume_done[faked_port_index] = jiffies +
msecs_to_jiffies(20);
mod_timer(&hcd->rh_timer,
- xhci->resume_done[port_id - 1]);
+ bus_state->resume_done[faked_port_index]);
/* Do the rest in GetPortStatus */
}
}
/* Update event ring dequeue pointer before dropping the lock */
inc_deq(xhci, xhci->event_ring, true);
+ /* Don't make the USB core poll the roothub if we got a bad port status
+ * change event. Besides, at that point we can't tell which roothub
+ * (USB 2.0 or USB 3.0) to kick.
+ */
+ if (bogus_port_status)
+ return;
+
spin_unlock(&xhci->lock);
/* Pass this up to the core */
- usb_hcd_poll_rh_status(xhci_to_hcd(xhci));
+ usb_hcd_poll_rh_status(hcd);
spin_lock(&xhci->lock);
}
urb_priv->td_cnt++;
/* Giveback the urb when all the tds are completed */
- if (urb_priv->td_cnt == urb_priv->length)
+ if (urb_priv->td_cnt == urb_priv->length) {
ret = 1;
+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+ xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--;
+ if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs
+ == 0) {
+ if (xhci->quirks & XHCI_AMD_PLL_FIX)
+ usb_amd_quirk_pll_enable();
+ }
+ }
+ }
}
return ret;
struct urb_priv *urb_priv;
int idx;
int len = 0;
- int skip_td = 0;
union xhci_trb *cur_trb;
struct xhci_segment *cur_seg;
+ struct usb_iso_packet_descriptor *frame;
u32 trb_comp_code;
+ bool skip_td = false;
ep_ring = xhci_dma_to_transfer_ring(ep, event->buffer);
trb_comp_code = GET_COMP_CODE(event->transfer_len);
urb_priv = td->urb->hcpriv;
idx = urb_priv->td_cnt;
+ frame = &td->urb->iso_frame_desc[idx];
- if (ep->skip) {
- /* The transfer is partly done */
- *status = -EXDEV;
- td->urb->iso_frame_desc[idx].status = -EXDEV;
- } else {
- /* handle completion code */
- switch (trb_comp_code) {
- case COMP_SUCCESS:
- td->urb->iso_frame_desc[idx].status = 0;
- xhci_dbg(xhci, "Successful isoc transfer!\n");
- break;
- case COMP_SHORT_TX:
- if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
- td->urb->iso_frame_desc[idx].status =
- -EREMOTEIO;
- else
- td->urb->iso_frame_desc[idx].status = 0;
- break;
- case COMP_BW_OVER:
- td->urb->iso_frame_desc[idx].status = -ECOMM;
- skip_td = 1;
- break;
- case COMP_BUFF_OVER:
- case COMP_BABBLE:
- td->urb->iso_frame_desc[idx].status = -EOVERFLOW;
- skip_td = 1;
- break;
- case COMP_STALL:
- td->urb->iso_frame_desc[idx].status = -EPROTO;
- skip_td = 1;
- break;
- case COMP_STOP:
- case COMP_STOP_INVAL:
- break;
- default:
- td->urb->iso_frame_desc[idx].status = -1;
- break;
- }
- }
-
- /* calc actual length */
- if (ep->skip) {
- td->urb->iso_frame_desc[idx].actual_length = 0;
- /* Update ring dequeue pointer */
- while (ep_ring->dequeue != td->last_trb)
- inc_deq(xhci, ep_ring, false);
- inc_deq(xhci, ep_ring, false);
- return finish_td(xhci, td, event_trb, event, ep, status, true);
+ /* handle completion code */
+ switch (trb_comp_code) {
+ case COMP_SUCCESS:
+ frame->status = 0;
+ xhci_dbg(xhci, "Successful isoc transfer!\n");
+ break;
+ case COMP_SHORT_TX:
+ frame->status = td->urb->transfer_flags & URB_SHORT_NOT_OK ?
+ -EREMOTEIO : 0;
+ break;
+ case COMP_BW_OVER:
+ frame->status = -ECOMM;
+ skip_td = true;
+ break;
+ case COMP_BUFF_OVER:
+ case COMP_BABBLE:
+ frame->status = -EOVERFLOW;
+ skip_td = true;
+ break;
+ case COMP_STALL:
+ frame->status = -EPROTO;
+ skip_td = true;
+ break;
+ case COMP_STOP:
+ case COMP_STOP_INVAL:
+ break;
+ default:
+ frame->status = -1;
+ break;
}
- if (trb_comp_code == COMP_SUCCESS || skip_td == 1) {
- td->urb->iso_frame_desc[idx].actual_length =
- td->urb->iso_frame_desc[idx].length;
- td->urb->actual_length +=
- td->urb->iso_frame_desc[idx].length;
+ if (trb_comp_code == COMP_SUCCESS || skip_td) {
+ frame->actual_length = frame->length;
+ td->urb->actual_length += frame->length;
} else {
for (cur_trb = ep_ring->dequeue,
cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
TRB_LEN(event->transfer_len);
if (trb_comp_code != COMP_STOP_INVAL) {
- td->urb->iso_frame_desc[idx].actual_length = len;
+ frame->actual_length = len;
td->urb->actual_length += len;
}
}
return finish_td(xhci, td, event_trb, event, ep, status, false);
}
+static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
+ struct xhci_transfer_event *event,
+ struct xhci_virt_ep *ep, int *status)
+{
+ struct xhci_ring *ep_ring;
+ struct urb_priv *urb_priv;
+ struct usb_iso_packet_descriptor *frame;
+ int idx;
+
+ ep_ring = xhci_dma_to_transfer_ring(ep, event->buffer);
+ urb_priv = td->urb->hcpriv;
+ idx = urb_priv->td_cnt;
+ frame = &td->urb->iso_frame_desc[idx];
+
+ /* The transfer is partly done */
+ *status = -EXDEV;
+ frame->status = -EXDEV;
+
+ /* calc actual length */
+ frame->actual_length = 0;
+
+ /* Update ring dequeue pointer */
+ while (ep_ring->dequeue != td->last_trb)
+ inc_deq(xhci, ep_ring, false);
+ inc_deq(xhci, ep_ring, false);
+
+ return finish_td(xhci, td, NULL, event, ep, status, true);
+}
+
/*
* Process bulk and interrupt tds, update urb status and actual_length.
*/
}
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 && ep->skip) {
+ if (!event_seg) {
+ if (!ep->skip ||
+ !usb_endpoint_xfer_isoc(&td->urb->ep->desc)) {
+ /* HC is busted, give up! */
+ xhci_err(xhci,
+ "ERROR Transfer event TRB DMA ptr not "
+ "part of current TD\n");
+ return -ESHUTDOWN;
+ }
+
+ ret = skip_isoc_td(xhci, td, event, ep, &status);
+ goto cleanup;
+ }
+
+ if (ep->skip) {
xhci_dbg(xhci, "Found td. Clear skip flag.\n");
ep->skip = false;
}
- if (!event_seg &&
- (!ep->skip || !usb_endpoint_xfer_isoc(&td->urb->ep->desc))) {
- /* HC is busted, give up! */
- xhci_err(xhci, "ERROR Transfer event TRB DMA ptr not "
- "part of current TD\n");
- return -ESHUTDOWN;
- }
- if (event_seg) {
- event_trb = &event_seg->trbs[(event_dma -
- event_seg->dma) / sizeof(*event_trb)];
- /*
- * No-op TRB should not trigger interrupts.
- * If event_trb is a no-op TRB, it means the
- * corresponding TD has been cancelled. Just ignore
- * the TD.
- */
- if ((event_trb->generic.field[3] & TRB_TYPE_BITMASK)
- == TRB_TYPE(TRB_TR_NOOP)) {
- xhci_dbg(xhci, "event_trb is a no-op TRB. "
- "Skip it\n");
- goto cleanup;
- }
+ event_trb = &event_seg->trbs[(event_dma - event_seg->dma) /
+ sizeof(*event_trb)];
+ /*
+ * No-op TRB should not trigger interrupts.
+ * If event_trb is a no-op TRB, it means the
+ * corresponding TD has been cancelled. Just ignore
+ * the TD.
+ */
+ if ((event_trb->generic.field[3] & TRB_TYPE_BITMASK)
+ == TRB_TYPE(TRB_TR_NOOP)) {
+ xhci_dbg(xhci,
+ "event_trb is a no-op TRB. Skip it\n");
+ goto cleanup;
}
/* Now update the urb's actual_length and give back to
trb_comp_code != COMP_BABBLE))
xhci_urb_free_priv(xhci, urb_priv);
- usb_hcd_unlink_urb_from_ep(xhci_to_hcd(xhci), urb);
+ usb_hcd_unlink_urb_from_ep(bus_to_hcd(urb->dev->bus), urb);
xhci_dbg(xhci, "Giveback URB %p, len = %d, "
"status = %d\n",
urb, urb->actual_length, status);
spin_unlock(&xhci->lock);
- usb_hcd_giveback_urb(xhci_to_hcd(xhci), urb, status);
+ usb_hcd_giveback_urb(bus_to_hcd(urb->dev->bus), urb, status);
spin_lock(&xhci->lock);
}
xhci_warn(xhci, "WARNING: Host System Error\n");
xhci_halt(xhci);
hw_died:
- xhci_to_hcd(xhci)->state = HC_STATE_HALT;
spin_unlock(&xhci->lock);
return -ESHUTDOWN;
}
irqreturn_t xhci_msi_irq(int irq, struct usb_hcd *hcd)
{
irqreturn_t ret;
+ struct xhci_hcd *xhci;
+ xhci = hcd_to_xhci(hcd);
set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
+ if (xhci->shared_hcd)
+ set_bit(HCD_FLAG_SAW_IRQ, &xhci->shared_hcd->flags);
ret = xhci_irq(hcd);
INIT_LIST_HEAD(&td->cancelled_td_list);
if (td_index == 0) {
- ret = usb_hcd_link_urb_to_ep(xhci_to_hcd(xhci), urb);
+ ret = usb_hcd_link_urb_to_ep(bus_to_hcd(urb->dev->bus), urb);
if (unlikely(ret)) {
xhci_urb_free_priv(xhci, urb_priv);
urb->hcpriv = NULL;
}
}
+ if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) {
+ if (xhci->quirks & XHCI_AMD_PLL_FIX)
+ usb_amd_quirk_pll_disable();
+ }
+ xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs++;
+
giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
start_cycle, start_trb);
return 0;
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), false);
-}
-
-/*
- * 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)
{
u32 trb_ep_index = EP_ID_FOR_TRB(ep_index);
u32 trb_stream_id = STREAM_ID_FOR_TRB(stream_id);
u32 type = TRB_TYPE(TRB_SET_DEQ);
+ struct xhci_virt_ep *ep;
addr = xhci_trb_virt_to_dma(deq_seg, deq_ptr);
if (addr == 0) {
deq_seg, deq_ptr);
return 0;
}
+ ep = &xhci->devs[slot_id]->eps[ep_index];
+ if ((ep->ep_state & SET_DEQ_PENDING)) {
+ xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr\n");
+ xhci_warn(xhci, "A Set TR Deq Ptr command is pending.\n");
+ return 0;
+ }
+ ep->queued_deq_seg = deq_seg;
+ ep->queued_deq_ptr = deq_ptr;
return queue_command(xhci, lower_32_bits(addr) | cycle_state,
upper_32_bits(addr), trb_stream_id,
trb_slot_id | trb_ep_index | type, false);
projects / ~andy / linux / blobdiff