Lines Matching full:xhci
3 * xHCI host controller driver
58 #include "xhci.h"
59 #include "xhci-trace.h"
61 static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
143 static void next_trb(struct xhci_hcd *xhci, in next_trb() argument
159 void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) in inc_deq() argument
179 xhci_warn(xhci, "Missing link TRB at end of segment\n"); in inc_deq()
191 xhci_warn(xhci, "Ring is an endless link TRB loop\n"); in inc_deq()
212 * xHCI hardware can't handle the chain bit being cleared on a link TRB.
217 static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, in inc_enq() argument
230 xhci_err(xhci, "Tried to move enqueue past ring segment\n"); in inc_enq()
254 (xhci->quirks & XHCI_AMD_0x96_HOST)) && in inc_enq()
255 !xhci_link_trb_quirk(xhci)) { in inc_enq()
272 xhci_warn(xhci, "%s: Ring link TRB loop\n", __func__); in inc_enq()
284 static inline int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, in room_on_ring() argument
302 void xhci_ring_cmd_db(struct xhci_hcd *xhci) in xhci_ring_cmd_db() argument
304 if (!(xhci->cmd_ring_state & CMD_RING_STATE_RUNNING)) in xhci_ring_cmd_db()
307 xhci_dbg(xhci, "// Ding dong!\n"); in xhci_ring_cmd_db()
311 writel(DB_VALUE_HOST, &xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
313 readl(&xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
317 static bool xhci_mod_cmd_timer(struct xhci_hcd *xhci, unsigned long delay) in xhci_mod_cmd_timer() argument
319 return mod_delayed_work(system_wq, &xhci->cmd_timer, delay); in xhci_mod_cmd_timer()
322 static struct xhci_command *xhci_next_queued_cmd(struct xhci_hcd *xhci) in xhci_next_queued_cmd() argument
324 return list_first_entry_or_null(&xhci->cmd_list, struct xhci_command, in xhci_next_queued_cmd()
331 * This must be called with command ring stopped and xhci->lock held.
333 static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci, in xhci_handle_stopped_cmd_ring() argument
339 list_for_each_entry(i_cmd, &xhci->cmd_list, cmd_list) { in xhci_handle_stopped_cmd_ring()
346 xhci_dbg(xhci, "Turn aborted command %p to no-op\n", in xhci_handle_stopped_cmd_ring()
357 xhci->cmd_ring_state = CMD_RING_STATE_RUNNING; in xhci_handle_stopped_cmd_ring()
360 if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) && in xhci_handle_stopped_cmd_ring()
361 !(xhci->xhc_state & XHCI_STATE_DYING)) { in xhci_handle_stopped_cmd_ring()
362 xhci->current_cmd = cur_cmd; in xhci_handle_stopped_cmd_ring()
363 xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); in xhci_handle_stopped_cmd_ring()
364 xhci_ring_cmd_db(xhci); in xhci_handle_stopped_cmd_ring()
368 /* Must be called with xhci->lock held, releases and aquires lock back */
369 static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags) in xhci_abort_cmd_ring() argument
371 struct xhci_segment *new_seg = xhci->cmd_ring->deq_seg; in xhci_abort_cmd_ring()
372 union xhci_trb *new_deq = xhci->cmd_ring->dequeue; in xhci_abort_cmd_ring()
376 xhci_dbg(xhci, "Abort command ring\n"); in xhci_abort_cmd_ring()
378 reinit_completion(&xhci->cmd_ring_stop_completion); in xhci_abort_cmd_ring()
388 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
390 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
393 xhci_write_64(xhci, crcr | CMD_RING_ABORT, &xhci->op_regs->cmd_ring); in xhci_abort_cmd_ring()
395 /* Section 4.6.1.2 of xHCI 1.0 spec says software should also time the in xhci_abort_cmd_ring()
401 ret = xhci_handshake(&xhci->op_regs->cmd_ring, in xhci_abort_cmd_ring()
404 xhci_err(xhci, "Abort failed to stop command ring: %d\n", ret); in xhci_abort_cmd_ring()
405 xhci_halt(xhci); in xhci_abort_cmd_ring()
406 xhci_hc_died(xhci); in xhci_abort_cmd_ring()
415 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_abort_cmd_ring()
416 ret = wait_for_completion_timeout(&xhci->cmd_ring_stop_completion, in xhci_abort_cmd_ring()
418 spin_lock_irqsave(&xhci->lock, flags); in xhci_abort_cmd_ring()
420 xhci_dbg(xhci, "No stop event for abort, ring start fail?\n"); in xhci_abort_cmd_ring()
421 xhci_cleanup_command_queue(xhci); in xhci_abort_cmd_ring()
423 xhci_handle_stopped_cmd_ring(xhci, xhci_next_queued_cmd(xhci)); in xhci_abort_cmd_ring()
428 void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, in xhci_ring_ep_doorbell() argument
433 __le32 __iomem *db_addr = &xhci->dba->doorbell[slot_id]; in xhci_ring_ep_doorbell()
434 struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_ring_ep_doorbell()
455 static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in ring_doorbell_for_active_rings() argument
462 ep = &xhci->devs[slot_id]->eps[ep_index]; in ring_doorbell_for_active_rings()
467 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0); in ring_doorbell_for_active_rings()
475 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, in ring_doorbell_for_active_rings()
480 void xhci_ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in xhci_ring_doorbell_for_active_rings() argument
484 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_ring_doorbell_for_active_rings()
487 static struct xhci_virt_ep *xhci_get_virt_ep(struct xhci_hcd *xhci, in xhci_get_virt_ep() argument
492 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in xhci_get_virt_ep()
496 xhci_warn(xhci, "Invalid endpoint index %u\n", ep_index); in xhci_get_virt_ep()
499 if (!xhci->devs[slot_id]) { in xhci_get_virt_ep()
500 xhci_warn(xhci, "No xhci virt device for slot_id %u\n", slot_id); in xhci_get_virt_ep()
504 return &xhci->devs[slot_id]->eps[ep_index]; in xhci_get_virt_ep()
507 static struct xhci_ring *xhci_virt_ep_to_ring(struct xhci_hcd *xhci, in xhci_virt_ep_to_ring() argument
519 xhci_warn(xhci, "Invalid stream_id %u request for slot_id %u ep_index %u\n", in xhci_virt_ep_to_ring()
531 struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci, in xhci_triad_to_transfer_ring() argument
537 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_triad_to_transfer_ring()
541 return xhci_virt_ep_to_ring(xhci, ep, stream_id); in xhci_triad_to_transfer_ring()
551 static u64 xhci_get_hw_deq(struct xhci_hcd *xhci, struct xhci_virt_device *vdev, in xhci_get_hw_deq() argument
564 ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); in xhci_get_hw_deq()
568 static int xhci_move_dequeue_past_td(struct xhci_hcd *xhci, in xhci_move_dequeue_past_td() argument
572 struct xhci_virt_device *dev = xhci->devs[slot_id]; in xhci_move_dequeue_past_td()
589 ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, in xhci_move_dequeue_past_td()
592 xhci_warn(xhci, "WARN can't find new dequeue, invalid stream ID %u\n", in xhci_move_dequeue_past_td()
608 xhci_dbg(xhci, "ep ring empty, Set new dequeue = enqueue"); in xhci_move_dequeue_past_td()
611 xhci_warn(xhci, "Can't find new dequeue state, missing td\n"); in xhci_move_dequeue_past_td()
616 hw_dequeue = xhci_get_hw_deq(xhci, dev, ep_index, stream_id); in xhci_move_dequeue_past_td()
625 if (xhci->quirks & XHCI_EP_CTX_BROKEN_DCS && in xhci_move_dequeue_past_td()
627 halted_seg = trb_in_td(xhci, td->start_seg, in xhci_move_dequeue_past_td()
635 xhci_dbg(xhci, "Endpoint DCS = %d TRB index = %d cycle = %d\n", in xhci_move_dequeue_past_td()
661 next_trb(xhci, ep_ring, &new_seg, &new_deq); in xhci_move_dequeue_past_td()
665 xhci_err(xhci, "Error: Failed finding new dequeue state\n"); in xhci_move_dequeue_past_td()
676 xhci_warn(xhci, "Can't find dma of new dequeue ptr\n"); in xhci_move_dequeue_past_td()
677 xhci_warn(xhci, "deq seg = %p, deq ptr = %p\n", new_seg, new_deq); in xhci_move_dequeue_past_td()
682 xhci_warn(xhci, "Set TR Deq already pending, don't submit for 0x%pad\n", in xhci_move_dequeue_past_td()
688 cmd = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_move_dequeue_past_td()
690 xhci_warn(xhci, "Can't alloc Set TR Deq cmd 0x%pad\n", &addr); in xhci_move_dequeue_past_td()
696 ret = queue_command(xhci, cmd, in xhci_move_dequeue_past_td()
702 xhci_free_command(xhci, cmd); in xhci_move_dequeue_past_td()
708 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_move_dequeue_past_td()
717 xhci_ring_cmd_db(xhci); in xhci_move_dequeue_past_td()
725 static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in td_to_noop() argument
741 next_trb(xhci, ep_ring, &seg, &trb); in td_to_noop()
745 static void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci, in xhci_stop_watchdog_timer_in_irq() argument
754 * Must be called with xhci->lock held in interrupt context,
755 * releases and re-acquires xhci->lock
757 static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci, in xhci_giveback_urb_in_irq() argument
765 xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--; in xhci_giveback_urb_in_irq()
766 if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) { in xhci_giveback_urb_in_irq()
767 if (xhci->quirks & XHCI_AMD_PLL_FIX) in xhci_giveback_urb_in_irq()
777 static void xhci_unmap_td_bounce_buffer(struct xhci_hcd *xhci, in xhci_unmap_td_bounce_buffer() argument
780 struct device *dev = xhci_to_hcd(xhci)->self.controller; in xhci_unmap_td_bounce_buffer()
801 xhci_warn(xhci, "WARN Wrong bounce buffer read length: %zu != %d\n", in xhci_unmap_td_bounce_buffer()
811 static int xhci_td_cleanup(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_td_cleanup() argument
820 xhci_unmap_td_bounce_buffer(xhci, ep_ring, td); in xhci_td_cleanup()
828 xhci_warn(xhci, "URB req %u and actual %u transfer length mismatch\n", in xhci_td_cleanup()
846 xhci_dbg(xhci, "Giveback URB %p, len = %d, expected = %d, status = %d\n", in xhci_td_cleanup()
853 xhci_giveback_urb_in_irq(xhci, td, status); in xhci_td_cleanup()
869 ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_giveback_invalidated_tds()
872 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_giveback_invalidated_tds()
874 xhci_td_cleanup(ep->xhci, td, ring, td->status); in xhci_giveback_invalidated_tds()
876 xhci_dbg(ep->xhci, "%s: Keep cancelled URB %p TD as cancel_status is %d\n", in xhci_giveback_invalidated_tds()
879 if (ep->xhci->xhc_state & XHCI_STATE_DYING) in xhci_giveback_invalidated_tds()
884 static int xhci_reset_halted_ep(struct xhci_hcd *xhci, unsigned int slot_id, in xhci_reset_halted_ep() argument
890 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_reset_halted_ep()
896 xhci_dbg(xhci, "%s-reset ep %u, slot %u\n", in xhci_reset_halted_ep()
900 ret = xhci_queue_reset_ep(xhci, command, slot_id, ep_index, reset_type); in xhci_reset_halted_ep()
903 xhci_err(xhci, "ERROR queuing reset endpoint for slot %d ep_index %d, %d\n", in xhci_reset_halted_ep()
908 static int xhci_handle_halted_endpoint(struct xhci_hcd *xhci, in xhci_handle_halted_endpoint() argument
933 xhci_dbg(xhci, "Reset ep command for ep_index %d already pending\n", in xhci_handle_halted_endpoint()
938 err = xhci_reset_halted_ep(xhci, slot_id, ep->ep_index, reset_type); in xhci_handle_halted_endpoint()
944 xhci_ring_cmd_db(xhci); in xhci_handle_halted_endpoint()
951 * We have the xHCI lock, so nothing can modify this list until we drop it.
960 struct xhci_hcd *xhci; in xhci_invalidate_cancelled_tds() local
969 xhci = ep->xhci; in xhci_invalidate_cancelled_tds()
972 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_invalidate_cancelled_tds()
978 ring = xhci_urb_to_transfer_ring(xhci, td->urb); in xhci_invalidate_cancelled_tds()
980 xhci_warn(xhci, "WARN Cancelled URB %p has invalid stream ID %u.\n", in xhci_invalidate_cancelled_tds()
990 hw_deq = xhci_get_hw_deq(xhci, ep->vdev, ep->ep_index, in xhci_invalidate_cancelled_tds()
995 trb_in_td(xhci, td->start_seg, td->first_trb, td->last_trb, hw_deq, false)) { in xhci_invalidate_cancelled_tds()
1005 xhci_dbg(xhci, in xhci_invalidate_cancelled_tds()
1014 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1024 err = xhci_move_dequeue_past_td(xhci, slot_id, ep->ep_index, in xhci_invalidate_cancelled_tds()
1032 xhci_dbg(xhci, "Failed to clear cancelled cached URB %p, mark clear anyway\n", in xhci_invalidate_cancelled_tds()
1034 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1051 hw_deq = xhci_get_hw_deq(ep->xhci, ep->vdev, ep->ep_index, 0); in find_halted_td()
1054 if (trb_in_td(ep->xhci, td->start_seg, td->first_trb, in find_halted_td()
1071 static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_stop_ep() argument
1083 if (!xhci->devs[slot_id]) in xhci_handle_cmd_stop_ep()
1084 xhci_warn(xhci, "Stop endpoint command completion for disabled slot %u\n", in xhci_handle_cmd_stop_ep()
1090 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
1094 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_stop_ep()
1115 xhci_dbg(xhci, "Stop ep completion raced with stall, reset ep\n"); in xhci_handle_cmd_stop_ep()
1125 err = xhci_handle_halted_endpoint(xhci, ep, 0, td, in xhci_handle_cmd_stop_ep()
1129 xhci_stop_watchdog_timer_in_irq(xhci, ep); in xhci_handle_cmd_stop_ep()
1133 xhci_dbg(xhci, "Stop ep completion ctx error, ep is running\n"); in xhci_handle_cmd_stop_ep()
1135 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_handle_cmd_stop_ep()
1137 xhci_stop_watchdog_timer_in_irq(xhci, ep); in xhci_handle_cmd_stop_ep()
1141 xhci_queue_stop_endpoint(xhci, command, slot_id, ep_index, 0); in xhci_handle_cmd_stop_ep()
1142 xhci_ring_cmd_db(xhci); in xhci_handle_cmd_stop_ep()
1151 xhci_stop_watchdog_timer_in_irq(xhci, ep); in xhci_handle_cmd_stop_ep()
1155 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
1158 static void xhci_kill_ring_urbs(struct xhci_hcd *xhci, struct xhci_ring *ring) in xhci_kill_ring_urbs() argument
1169 xhci_unmap_td_bounce_buffer(xhci, ring, cur_td); in xhci_kill_ring_urbs()
1173 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_ring_urbs()
1177 static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci, in xhci_kill_endpoint_urbs() argument
1185 ep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_kill_endpoint_urbs()
1196 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1199 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1205 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1208 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1217 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_endpoint_urbs()
1227 * Call with xhci->lock held.
1230 void xhci_hc_died(struct xhci_hcd *xhci) in xhci_hc_died() argument
1234 if (xhci->xhc_state & XHCI_STATE_DYING) in xhci_hc_died()
1237 xhci_err(xhci, "xHCI host controller not responding, assume dead\n"); in xhci_hc_died()
1238 xhci->xhc_state |= XHCI_STATE_DYING; in xhci_hc_died()
1240 xhci_cleanup_command_queue(xhci); in xhci_hc_died()
1243 for (i = 0; i <= HCS_MAX_SLOTS(xhci->hcs_params1); i++) { in xhci_hc_died()
1244 if (!xhci->devs[i]) in xhci_hc_died()
1247 xhci_kill_endpoint_urbs(xhci, i, j); in xhci_hc_died()
1251 if (!(xhci->xhc_state & XHCI_STATE_REMOVING)) in xhci_hc_died()
1252 usb_hc_died(xhci_to_hcd(xhci)); in xhci_hc_died()
1259 * through xhci->state.
1275 struct xhci_hcd *xhci = ep->xhci; in xhci_stop_endpoint_command_watchdog() local
1280 spin_lock_irqsave(&xhci->lock, flags); in xhci_stop_endpoint_command_watchdog()
1285 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_stop_endpoint_command_watchdog()
1286 xhci_dbg(xhci, "Stop EP timer raced with cmd completion, exit"); in xhci_stop_endpoint_command_watchdog()
1289 usbsts = readl(&xhci->op_regs->status); in xhci_stop_endpoint_command_watchdog()
1291 xhci_warn(xhci, "xHCI host not responding to stop endpoint command.\n"); in xhci_stop_endpoint_command_watchdog()
1292 xhci_warn(xhci, "USBSTS:%s\n", xhci_decode_usbsts(str, usbsts)); in xhci_stop_endpoint_command_watchdog()
1296 xhci_halt(xhci); in xhci_stop_endpoint_command_watchdog()
1303 xhci_hc_died(xhci); in xhci_stop_endpoint_command_watchdog()
1305 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_stop_endpoint_command_watchdog()
1306 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_stop_endpoint_command_watchdog()
1307 "xHCI host controller is dead."); in xhci_stop_endpoint_command_watchdog()
1310 static void update_ring_for_set_deq_completion(struct xhci_hcd *xhci, in update_ring_for_set_deq_completion() argument
1340 xhci_dbg(xhci, "Unable to find new dequeue pointer\n"); in update_ring_for_set_deq_completion()
1353 static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_set_deq() argument
1366 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1370 ep_ring = xhci_virt_ep_to_ring(xhci, ep, stream_id); in xhci_handle_cmd_set_deq()
1372 xhci_warn(xhci, "WARN Set TR deq ptr command for freed stream ID %u\n", in xhci_handle_cmd_set_deq()
1378 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_set_deq()
1379 slot_ctx = xhci_get_slot_ctx(xhci, ep->vdev->out_ctx); in xhci_handle_cmd_set_deq()
1389 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd invalid because of stream ID configuration\n"); in xhci_handle_cmd_set_deq()
1392 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.\n"); in xhci_handle_cmd_set_deq()
1396 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1401 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed because slot %u was not enabled.\n", in xhci_handle_cmd_set_deq()
1405 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd with unknown completion code of %u.\n", in xhci_handle_cmd_set_deq()
1425 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1432 update_ring_for_set_deq_completion(xhci, ep->vdev, in xhci_handle_cmd_set_deq()
1435 xhci_warn(xhci, "Mismatch between completed Set TR Deq Ptr command & xHCI internal state.\n"); in xhci_handle_cmd_set_deq()
1436 xhci_warn(xhci, "ep deq seg = %p, deq ptr = %p\n", in xhci_handle_cmd_set_deq()
1443 ep_ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_handle_cmd_set_deq()
1446 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_handle_cmd_set_deq()
1448 xhci_td_cleanup(ep->xhci, td, ep_ring, td->status); in xhci_handle_cmd_set_deq()
1450 xhci_dbg(ep->xhci, "%s: Keep cancelled URB %p TD as cancel_status is %d\n", in xhci_handle_cmd_set_deq()
1459 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1462 static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_reset_ep() argument
1470 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1474 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_reset_ep()
1480 xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, in xhci_handle_cmd_reset_ep()
1486 if (xhci->quirks & XHCI_RESET_EP_QUIRK) in xhci_handle_cmd_reset_ep()
1487 xhci_dbg(xhci, "Note: Removed workaround to queue config ep for this hw"); in xhci_handle_cmd_reset_ep()
1495 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1498 static void xhci_handle_cmd_enable_slot(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_enable_slot() argument
1507 static void xhci_handle_cmd_disable_slot(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_disable_slot() argument
1512 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_disable_slot()
1516 slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); in xhci_handle_cmd_disable_slot()
1519 if (xhci->quirks & XHCI_EP_LIMIT_QUIRK) in xhci_handle_cmd_disable_slot()
1521 xhci_free_device_endpoint_resources(xhci, virt_dev, true); in xhci_handle_cmd_disable_slot()
1524 static void xhci_handle_cmd_config_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_config_ep() argument
1539 * If the command was for a halted endpoint, the xHCI driver in xhci_handle_cmd_config_ep()
1542 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_config_ep()
1547 xhci_warn(xhci, "Could not get input context, bad type.\n"); in xhci_handle_cmd_config_ep()
1556 ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->out_ctx, ep_index); in xhci_handle_cmd_config_ep()
1565 if (xhci->quirks & XHCI_RESET_EP_QUIRK && in xhci_handle_cmd_config_ep()
1571 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, in xhci_handle_cmd_config_ep()
1577 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_config_ep()
1583 static void xhci_handle_cmd_addr_dev(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_addr_dev() argument
1588 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_addr_dev()
1591 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_addr_dev()
1595 static void xhci_handle_cmd_reset_dev(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_reset_dev() argument
1600 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_reset_dev()
1602 xhci_warn(xhci, "Reset device command completion for disabled slot %u\n", in xhci_handle_cmd_reset_dev()
1606 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_reset_dev()
1609 xhci_dbg(xhci, "Completed reset device command.\n"); in xhci_handle_cmd_reset_dev()
1612 static void xhci_handle_cmd_nec_get_fw(struct xhci_hcd *xhci, in xhci_handle_cmd_nec_get_fw() argument
1615 if (!(xhci->quirks & XHCI_NEC_HOST)) { in xhci_handle_cmd_nec_get_fw()
1616 xhci_warn(xhci, "WARN NEC_GET_FW command on non-NEC host\n"); in xhci_handle_cmd_nec_get_fw()
1619 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, in xhci_handle_cmd_nec_get_fw()
1637 void xhci_cleanup_command_queue(struct xhci_hcd *xhci) in xhci_cleanup_command_queue() argument
1640 xhci->current_cmd = NULL; in xhci_cleanup_command_queue()
1641 list_for_each_entry_safe(cur_cmd, tmp_cmd, &xhci->cmd_list, cmd_list) in xhci_cleanup_command_queue()
1647 struct xhci_hcd *xhci; in xhci_handle_command_timeout() local
1651 xhci = container_of(to_delayed_work(work), struct xhci_hcd, cmd_timer); in xhci_handle_command_timeout()
1653 spin_lock_irqsave(&xhci->lock, flags); in xhci_handle_command_timeout()
1659 if (!xhci->current_cmd || delayed_work_pending(&xhci->cmd_timer)) { in xhci_handle_command_timeout()
1660 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1664 xhci->current_cmd->status = COMP_COMMAND_ABORTED; in xhci_handle_command_timeout()
1667 hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); in xhci_handle_command_timeout()
1669 xhci_hc_died(xhci); in xhci_handle_command_timeout()
1673 if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && in xhci_handle_command_timeout()
1676 xhci->cmd_ring_state = CMD_RING_STATE_ABORTED; in xhci_handle_command_timeout()
1677 xhci_dbg(xhci, "Command timeout\n"); in xhci_handle_command_timeout()
1678 xhci_abort_cmd_ring(xhci, flags); in xhci_handle_command_timeout()
1683 if (xhci->xhc_state & XHCI_STATE_REMOVING) { in xhci_handle_command_timeout()
1684 xhci_dbg(xhci, "host removed, ring start fail?\n"); in xhci_handle_command_timeout()
1685 xhci_cleanup_command_queue(xhci); in xhci_handle_command_timeout()
1691 xhci_dbg(xhci, "Command timeout on stopped ring\n"); in xhci_handle_command_timeout()
1692 xhci_handle_stopped_cmd_ring(xhci, xhci->current_cmd); in xhci_handle_command_timeout()
1695 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1699 static void handle_cmd_completion(struct xhci_hcd *xhci, in handle_cmd_completion() argument
1711 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in handle_cmd_completion()
1716 cmd_trb = xhci->cmd_ring->dequeue; in handle_cmd_completion()
1718 trace_xhci_handle_command(xhci->cmd_ring, &cmd_trb->generic); in handle_cmd_completion()
1720 cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg, in handle_cmd_completion()
1727 xhci_warn(xhci, in handle_cmd_completion()
1732 cmd = list_first_entry(&xhci->cmd_list, struct xhci_command, cmd_list); in handle_cmd_completion()
1734 cancel_delayed_work(&xhci->cmd_timer); in handle_cmd_completion()
1740 complete_all(&xhci->cmd_ring_stop_completion); in handle_cmd_completion()
1744 if (cmd->command_trb != xhci->cmd_ring->dequeue) { in handle_cmd_completion()
1745 xhci_err(xhci, in handle_cmd_completion()
1757 xhci->cmd_ring_state = CMD_RING_STATE_STOPPED; in handle_cmd_completion()
1759 if (xhci->current_cmd == cmd) in handle_cmd_completion()
1760 xhci->current_cmd = NULL; in handle_cmd_completion()
1768 xhci_handle_cmd_enable_slot(xhci, slot_id, cmd, cmd_comp_code); in handle_cmd_completion()
1771 xhci_handle_cmd_disable_slot(xhci, slot_id); in handle_cmd_completion()
1775 xhci_handle_cmd_config_ep(xhci, slot_id, cmd_comp_code); in handle_cmd_completion()
1780 xhci_handle_cmd_addr_dev(xhci, slot_id); in handle_cmd_completion()
1786 xhci_handle_cmd_stop_ep(xhci, slot_id, cmd_trb, in handle_cmd_completion()
1792 xhci_handle_cmd_set_deq(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1802 xhci_handle_cmd_reset_ep(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1806 * Use the SLOT_ID from the command TRB instead (xhci 4.6.11) in handle_cmd_completion()
1810 xhci_handle_cmd_reset_dev(xhci, slot_id); in handle_cmd_completion()
1813 xhci_handle_cmd_nec_get_fw(xhci, event); in handle_cmd_completion()
1817 xhci_info(xhci, "INFO unknown command type %d\n", cmd_type); in handle_cmd_completion()
1822 if (!list_is_singular(&xhci->cmd_list)) { in handle_cmd_completion()
1823 xhci->current_cmd = list_first_entry(&cmd->cmd_list, in handle_cmd_completion()
1825 xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); in handle_cmd_completion()
1826 } else if (xhci->current_cmd == cmd) { in handle_cmd_completion()
1827 xhci->current_cmd = NULL; in handle_cmd_completion()
1833 inc_deq(xhci, xhci->cmd_ring); in handle_cmd_completion()
1836 static void handle_vendor_event(struct xhci_hcd *xhci, in handle_vendor_event() argument
1839 xhci_dbg(xhci, "Vendor specific event TRB type = %u\n", trb_type); in handle_vendor_event()
1840 if (trb_type == TRB_NEC_CMD_COMP && (xhci->quirks & XHCI_NEC_HOST)) in handle_vendor_event()
1841 handle_cmd_completion(xhci, &event->event_cmd); in handle_vendor_event()
1844 static void handle_device_notification(struct xhci_hcd *xhci, in handle_device_notification() argument
1851 if (!xhci->devs[slot_id]) { in handle_device_notification()
1852 xhci_warn(xhci, "Device Notification event for " in handle_device_notification()
1857 xhci_dbg(xhci, "Device Wake Notification event for slot ID %u\n", in handle_device_notification()
1859 udev = xhci->devs[slot_id]->udev; in handle_device_notification()
1865 * Quirk hanlder for errata seen on Cavium ThunderX2 processor XHCI
1876 static void xhci_cavium_reset_phy_quirk(struct xhci_hcd *xhci) in xhci_cavium_reset_phy_quirk() argument
1878 struct usb_hcd *hcd = xhci_to_hcd(xhci); in xhci_cavium_reset_phy_quirk()
1893 static void handle_port_status(struct xhci_hcd *xhci, in handle_port_status() argument
1908 xhci_warn(xhci, in handle_port_status()
1912 max_ports = HCS_MAX_PORTS(xhci->hcs_params1); in handle_port_status()
1915 xhci_warn(xhci, "Port change event with invalid port ID %d\n", in handle_port_status()
1917 inc_deq(xhci, xhci->event_ring); in handle_port_status()
1921 port = &xhci->hw_ports[port_id - 1]; in handle_port_status()
1923 xhci_warn(xhci, "Port change event, no port for port ID %u\n", in handle_port_status()
1930 if (port->rhub == &xhci->usb3_rhub && xhci->shared_hcd == NULL) { in handle_port_status()
1931 xhci_dbg(xhci, "ignore port event for removed USB3 hcd\n"); in handle_port_status()
1941 xhci_dbg(xhci, "Port change event, %d-%d, id %d, portsc: 0x%x\n", in handle_port_status()
1947 xhci_dbg(xhci, "resume root hub\n"); in handle_port_status()
1953 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
1954 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
1955 xhci->devs[slot_id]->flags |= VDEV_PORT_ERROR; in handle_port_status()
1959 xhci_dbg(xhci, "port resume event for port %d\n", port_id); in handle_port_status()
1961 cmd_reg = readl(&xhci->op_regs->command); in handle_port_status()
1963 xhci_warn(xhci, "xHC is not running.\n"); in handle_port_status()
1968 xhci_dbg(xhci, "remote wake SS port %d\n", port_id); in handle_port_status()
1974 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1976 xhci_set_link_state(xhci, port, XDEV_U0); in handle_port_status()
1983 xhci_dbg(xhci, "resume HS port %d\n", port_id); in handle_port_status()
2004 xhci_dbg(xhci, "resume SS port %d finished\n", port_id); in handle_port_status()
2013 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
2014 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
2015 xhci_ring_device(xhci, slot_id); in handle_port_status()
2017 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
2026 * Check to see if xhci-hub.c is waiting on RExit to U0 transition (or in handle_port_status()
2039 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
2040 if ((xhci->quirks & XHCI_RESET_PLL_ON_DISCONNECT) && in handle_port_status()
2042 xhci_cavium_reset_phy_quirk(xhci); in handle_port_status()
2047 inc_deq(xhci, xhci->event_ring); in handle_port_status()
2057 * xHCI port-status-change events occur when the "or" of all the in handle_port_status()
2063 xhci_dbg(xhci, "%s: starting usb%d port polling.\n", in handle_port_status()
2066 spin_unlock(&xhci->lock); in handle_port_status()
2069 spin_lock(&xhci->lock); in handle_port_status()
2078 struct xhci_segment *trb_in_td(struct xhci_hcd *xhci, in trb_in_td() argument
2103 xhci_warn(xhci, in trb_in_td()
2139 static void xhci_clear_hub_tt_buffer(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_clear_hub_tt_buffer() argument
2147 (td->urb->dev->tt->hub != xhci_to_hcd(xhci)->self.root_hub) && in xhci_clear_hub_tt_buffer()
2162 static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci, in xhci_requires_manual_halt_cleanup() argument
2182 int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code) in xhci_is_vendor_info_code() argument
2188 xhci_dbg(xhci, "Vendor defined info completion code %u\n", in xhci_is_vendor_info_code()
2190 xhci_dbg(xhci, "Treating code as success.\n"); in xhci_is_vendor_info_code()
2196 static int finish_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in finish_td() argument
2202 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in finish_td()
2236 xhci_dbg(xhci, "Already resolving halted ep for 0x%llx\n", in finish_td()
2245 xhci_clear_hub_tt_buffer(xhci, td, ep); in finish_td()
2246 xhci_handle_halted_endpoint(xhci, ep, ep_ring->stream_id, td, in finish_td()
2251 * xhci internal endpoint state will go to a "halt" state for in finish_td()
2261 xhci_clear_hub_tt_buffer(xhci, td, ep); in finish_td()
2263 xhci_handle_halted_endpoint(xhci, ep, ep_ring->stream_id, td, in finish_td()
2275 inc_deq(xhci, ep_ring); in finish_td()
2277 return xhci_td_cleanup(xhci, td, ep_ring, td->status); in finish_td()
2281 static int sum_trb_lengths(struct xhci_hcd *xhci, struct xhci_ring *ring, in sum_trb_lengths() argument
2288 for (sum = 0; trb != stop_trb; next_trb(xhci, ring, &seg, &trb)) { in sum_trb_lengths()
2298 static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_ctrl_td() argument
2308 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in process_ctrl_td()
2316 xhci_warn(xhci, "WARN: Success on ctrl %s TRB without IOC set?\n", in process_ctrl_td()
2330 xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n"); in process_ctrl_td()
2345 xhci_warn(xhci, "WARN: unexpected TRB Type %d\n", in process_ctrl_td()
2352 if (!xhci_requires_manual_halt_cleanup(xhci, in process_ctrl_td()
2355 xhci_dbg(xhci, "TRB error %u, halted endpoint index = %u\n", in process_ctrl_td()
2379 xhci_dbg(xhci, "Waiting for status stage event\n"); in process_ctrl_td()
2388 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_ctrl_td()
2394 static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_isoc_td() argument
2421 if (xhci->quirks & XHCI_TRUST_TX_LENGTH) in process_isoc_td()
2466 frame->actual_length = sum_trb_lengths(xhci, ep->ring, ep_trb) + in process_isoc_td()
2473 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_isoc_td()
2476 static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, in skip_isoc_td() argument
2497 inc_deq(xhci, ep->ring); in skip_isoc_td()
2499 return xhci_td_cleanup(xhci, td, ep->ring, status); in skip_isoc_td()
2505 static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_bulk_intr_td() argument
2513 slot_ctx = xhci_get_slot_ctx(xhci, ep->vdev->out_ctx); in process_bulk_intr_td()
2524 xhci_warn(xhci, "WARN Successful completion on short TX\n"); in process_bulk_intr_td()
2525 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2532 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2546 if (xhci->quirks & XHCI_NO_SOFT_RETRY || in process_bulk_intr_td()
2553 xhci_handle_halted_endpoint(xhci, ep, ep_ring->stream_id, td, in process_bulk_intr_td()
2565 sum_trb_lengths(xhci, ep_ring, ep_trb) + in process_bulk_intr_td()
2569 xhci_warn(xhci, "bad transfer trb length %d in event trb\n", in process_bulk_intr_td()
2574 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_bulk_intr_td()
2582 static int handle_tx_event(struct xhci_hcd *xhci, in handle_tx_event() argument
2605 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in handle_tx_event()
2607 xhci_err(xhci, "ERROR Invalid Transfer event\n"); in handle_tx_event()
2612 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in handle_tx_event()
2615 xhci_err(xhci, in handle_tx_event()
2621 /* Some transfer events don't always point to a trb, see xhci 4.17.4 */ in handle_tx_event()
2628 xhci_handle_halted_endpoint(xhci, ep, 0, NULL, in handle_tx_event()
2636 xhci_err(xhci, "ERROR Transfer event for unknown stream ring slot %u ep %u\n", in handle_tx_event()
2656 if (xhci->quirks & XHCI_TRUST_TX_LENGTH || in handle_tx_event()
2660 xhci_warn_ratelimited(xhci, in handle_tx_event()
2667 xhci_dbg(xhci, "Stopped on Transfer TRB for slot %u ep %u\n", in handle_tx_event()
2671 xhci_dbg(xhci, in handle_tx_event()
2676 xhci_dbg(xhci, in handle_tx_event()
2682 xhci_dbg(xhci, "Stalled endpoint for slot %u ep %u\n", slot_id, in handle_tx_event()
2687 xhci_dbg(xhci, "Split transaction error for slot %u ep %u\n", in handle_tx_event()
2692 xhci_dbg(xhci, "Transfer error for slot %u ep %u on endpoint\n", in handle_tx_event()
2697 xhci_dbg(xhci, "Babble error for slot %u ep %u on endpoint\n", in handle_tx_event()
2703 xhci_warn(xhci, in handle_tx_event()
2710 xhci_warn(xhci, in handle_tx_event()
2716 xhci_warn(xhci, in handle_tx_event()
2721 xhci_warn(xhci, in handle_tx_event()
2731 xhci_dbg(xhci, "underrun event on endpoint\n"); in handle_tx_event()
2733 xhci_dbg(xhci, "Underrun Event for slot %d ep %d " in handle_tx_event()
2739 xhci_dbg(xhci, "overrun event on endpoint\n"); in handle_tx_event()
2741 xhci_dbg(xhci, "Overrun Event for slot %d ep %d " in handle_tx_event()
2754 xhci_dbg(xhci, in handle_tx_event()
2760 xhci_dbg(xhci, in handle_tx_event()
2767 xhci_warn(xhci, in handle_tx_event()
2773 if (xhci_is_vendor_info_code(xhci, trb_comp_code)) { in handle_tx_event()
2777 xhci_warn(xhci, in handle_tx_event()
2799 xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n", in handle_tx_event()
2805 xhci_dbg(xhci, "td_list is empty while skip flag set. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2809 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
2811 xhci_handle_halted_endpoint(xhci, ep, in handle_tx_event()
2822 xhci_dbg(xhci, "All tds on the ep_ring skipped. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2833 ep_seg = trb_in_td(xhci, ep_ring->deq_seg, ep_ring->dequeue, in handle_tx_event()
2856 if ((xhci->quirks & XHCI_SPURIOUS_SUCCESS) && in handle_tx_event()
2862 xhci_err(xhci, in handle_tx_event()
2867 trb_in_td(xhci, ep_ring->deq_seg, in handle_tx_event()
2873 skip_isoc_td(xhci, td, ep, status); in handle_tx_event()
2882 xhci_dbg(xhci, in handle_tx_event()
2904 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
2906 xhci_handle_halted_endpoint(xhci, ep, in handle_tx_event()
2916 process_ctrl_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2918 process_isoc_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2920 process_bulk_intr_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2931 inc_deq(xhci, xhci->event_ring); in handle_tx_event()
2944 xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", in handle_tx_event()
2946 xhci->event_ring->deq_seg, in handle_tx_event()
2947 xhci->event_ring->dequeue), in handle_tx_event()
2957 * xhci->lock between event processing (e.g. to pass up port status changes).
2961 int xhci_handle_event(struct xhci_hcd *xhci) in xhci_handle_event() argument
2969 if (!xhci->event_ring || !xhci->event_ring->dequeue) { in xhci_handle_event()
2970 xhci_err(xhci, "ERROR event ring not ready\n"); in xhci_handle_event()
2974 event = xhci->event_ring->dequeue; in xhci_handle_event()
2977 xhci->event_ring->cycle_state) in xhci_handle_event()
2980 trace_xhci_handle_event(xhci->event_ring, &event->generic); in xhci_handle_event()
2992 handle_cmd_completion(xhci, &event->event_cmd); in xhci_handle_event()
2995 handle_port_status(xhci, event); in xhci_handle_event()
2999 ret = handle_tx_event(xhci, &event->trans_event); in xhci_handle_event()
3004 handle_device_notification(xhci, event); in xhci_handle_event()
3008 handle_vendor_event(xhci, event, trb_type); in xhci_handle_event()
3010 xhci_warn(xhci, "ERROR unknown event type %d\n", trb_type); in xhci_handle_event()
3015 if (xhci->xhc_state & XHCI_STATE_DYING) { in xhci_handle_event()
3016 xhci_dbg(xhci, "xHCI host dying, returning from " in xhci_handle_event()
3023 inc_deq(xhci, xhci->event_ring); in xhci_handle_event()
3037 void xhci_update_erst_dequeue(struct xhci_hcd *xhci, in xhci_update_erst_dequeue() argument
3043 temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
3045 if (event_ring_deq != xhci->event_ring->dequeue) { in xhci_update_erst_dequeue()
3046 deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, in xhci_update_erst_dequeue()
3047 xhci->event_ring->dequeue); in xhci_update_erst_dequeue()
3049 xhci_warn(xhci, "WARN something wrong with SW event ring dequeue ptr\n"); in xhci_update_erst_dequeue()
3065 xhci_write_64(xhci, temp_64, &xhci->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
3069 static irqreturn_t xhci_vendor_queue_irq_work(struct xhci_hcd *xhci) in xhci_vendor_queue_irq_work() argument
3071 struct xhci_vendor_ops *ops = xhci_vendor_get_ops(xhci); in xhci_vendor_queue_irq_work()
3074 return ops->queue_irq_work(xhci); in xhci_vendor_queue_irq_work()
3079 * xHCI spec says we can get an interrupt, and if the HC has an error condition,
3085 struct xhci_hcd *xhci = hcd_to_xhci(hcd); in xhci_irq() local
3093 spin_lock_irqsave(&xhci->lock, flags); in xhci_irq()
3095 status = readl(&xhci->op_regs->status); in xhci_irq()
3097 xhci_hc_died(xhci); in xhci_irq()
3106 xhci_warn(xhci, "WARNING: Host System Error\n"); in xhci_irq()
3107 xhci_halt(xhci); in xhci_irq()
3112 ret = xhci_vendor_queue_irq_work(xhci); in xhci_irq()
3122 writel(status, &xhci->op_regs->status); in xhci_irq()
3126 irq_pending = readl(&xhci->ir_set->irq_pending); in xhci_irq()
3128 writel(irq_pending, &xhci->ir_set->irq_pending); in xhci_irq()
3131 if (xhci->xhc_state & XHCI_STATE_DYING || in xhci_irq()
3132 xhci->xhc_state & XHCI_STATE_HALTED) { in xhci_irq()
3133 xhci_dbg(xhci, "xHCI dying, ignoring interrupt. " in xhci_irq()
3138 temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); in xhci_irq()
3139 xhci_write_64(xhci, temp_64 | ERST_EHB, in xhci_irq()
3140 &xhci->ir_set->erst_dequeue); in xhci_irq()
3145 event_ring_deq = xhci->event_ring->dequeue; in xhci_irq()
3149 while (xhci_handle_event(xhci) > 0) { in xhci_irq()
3152 xhci_update_erst_dequeue(xhci, event_ring_deq); in xhci_irq()
3153 event_ring_deq = xhci->event_ring->dequeue; in xhci_irq()
3158 xhci_update_erst_dequeue(xhci, event_ring_deq); in xhci_irq()
3162 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_irq()
3181 static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, in queue_trb() argument
3197 inc_enq(xhci, ring, more_trbs_coming); in queue_trb()
3204 static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in prepare_ring() argument
3217 xhci_warn(xhci, "WARN urb submitted to disabled ep\n"); in prepare_ring()
3220 xhci_warn(xhci, "WARN waiting for error on ep to be cleared\n"); in prepare_ring()
3225 xhci_dbg(xhci, "WARN halted endpoint, queueing URB anyway.\n"); in prepare_ring()
3230 xhci_err(xhci, "ERROR unknown endpoint state for ep\n"); in prepare_ring()
3239 if (room_on_ring(xhci, ep_ring, num_trbs)) in prepare_ring()
3242 if (ep_ring == xhci->cmd_ring) { in prepare_ring()
3243 xhci_err(xhci, "Do not support expand command ring\n"); in prepare_ring()
3247 xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, in prepare_ring()
3250 if (xhci_ring_expansion(xhci, ep_ring, num_trbs_needed, in prepare_ring()
3252 xhci_err(xhci, "Ring expansion failed\n"); in prepare_ring()
3261 if (!xhci_link_trb_quirk(xhci) && in prepare_ring()
3263 (xhci->quirks & XHCI_AMD_0x96_HOST))) in prepare_ring()
3282 xhci_warn(xhci, "Ring is an endless link TRB loop\n"); in prepare_ring()
3288 xhci_warn(xhci, "Missing link TRB at end of ring segment\n"); in prepare_ring()
3295 static int prepare_transfer(struct xhci_hcd *xhci, in prepare_transfer() argument
3308 struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in prepare_transfer()
3310 ep_ring = xhci_triad_to_transfer_ring(xhci, xdev->slot_id, ep_index, in prepare_transfer()
3313 xhci_dbg(xhci, "Can't prepare ring for bad stream ID %u\n", in prepare_transfer()
3318 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in prepare_transfer()
3402 static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, in giveback_first_trb() argument
3415 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, stream_id); in giveback_first_trb()
3418 static void check_interval(struct xhci_hcd *xhci, struct urb *urb, in check_interval() argument
3437 "Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n", in check_interval()
3449 * xHCI uses normal TRBs for both bulk and interrupt. When the interrupt
3454 int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_intr_tx() argument
3459 ep_ctx = xhci_get_ep_ctx(xhci, xhci->devs[slot_id]->out_ctx, ep_index); in xhci_queue_intr_tx()
3460 check_interval(xhci, urb, ep_ctx); in xhci_queue_intr_tx()
3462 return xhci_queue_bulk_tx(xhci, mem_flags, urb, slot_id, ep_index); in xhci_queue_intr_tx()
3466 * For xHCI 1.0 host controllers, TD size is the number of max packet sized
3477 * For xHCI 0.96 and older, TD size field should be the remaining bytes
3485 static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred, in xhci_td_remainder() argument
3491 /* MTK xHCI 0.96 contains some features from 1.0 */ in xhci_td_remainder()
3492 if (xhci->hci_version < 0x100 && !(xhci->quirks & XHCI_MTK_HOST)) in xhci_td_remainder()
3500 /* for MTK xHCI 0.96, TD size include this TRB, but not in 1.x */ in xhci_td_remainder()
3501 if ((xhci->quirks & XHCI_MTK_HOST) && (xhci->hci_version < 0x100)) in xhci_td_remainder()
3512 static int xhci_align_td(struct xhci_hcd *xhci, struct urb *urb, u32 enqd_len, in xhci_align_td() argument
3515 struct device *dev = xhci_to_hcd(xhci)->self.controller; in xhci_align_td()
3528 xhci_dbg(xhci, "Unaligned %d bytes, buff len %d\n", in xhci_align_td()
3534 xhci_dbg(xhci, "split align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3554 xhci_warn(xhci, "WARN Wrong bounce buffer write length: %zu != %d\n", in xhci_align_td()
3569 xhci_warn(xhci, "Failed mapping bounce buffer, not aligning\n"); in xhci_align_td()
3576 xhci_dbg(xhci, "Bounce align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3582 int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_bulk_tx() argument
3600 ring = xhci_urb_to_transfer_ring(xhci, urb); in xhci_queue_bulk_tx()
3617 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3666 if (xhci_align_td(xhci, urb, enqd_len, in xhci_queue_bulk_tx()
3694 remainder = xhci_td_remainder(xhci, enqd_len, trb_buff_len, in xhci_queue_bulk_tx()
3701 queue_trb(xhci, ring, more_trbs_coming | need_zero_pkt, in xhci_queue_bulk_tx()
3726 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3732 queue_trb(xhci, ring, 0, 0, 0, TRB_INTR_TARGET(0), field); in xhci_queue_bulk_tx()
3737 giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, in xhci_queue_bulk_tx()
3742 /* Caller must have locked xhci->lock */
3743 int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_ctrl_tx() argument
3756 ep_ring = xhci_urb_to_transfer_ring(xhci, urb); in xhci_queue_ctrl_tx()
3776 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_ctrl_tx()
3802 /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */ in xhci_queue_ctrl_tx()
3803 if ((xhci->hci_version >= 0x100) || (xhci->quirks & XHCI_MTK_HOST)) { in xhci_queue_ctrl_tx()
3812 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3839 remainder = xhci_td_remainder(xhci, 0, in xhci_queue_ctrl_tx()
3848 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3865 queue_trb(xhci, ep_ring, false, in xhci_queue_ctrl_tx()
3872 giveback_first_trb(xhci, slot_id, ep_index, 0, in xhci_queue_ctrl_tx()
3883 * zero. Only xHCI 1.0 host controllers support this field.
3885 static unsigned int xhci_get_burst_count(struct xhci_hcd *xhci, in xhci_get_burst_count() argument
3890 if (xhci->hci_version < 0x100 || urb->dev->speed < USB_SPEED_SUPER) in xhci_get_burst_count()
3905 static unsigned int xhci_get_last_burst_packet_count(struct xhci_hcd *xhci, in xhci_get_last_burst_packet_count() argument
3911 if (xhci->hci_version < 0x100) in xhci_get_last_burst_packet_count()
3937 static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci, in xhci_get_isoc_frame_id() argument
3957 ist = HCS_IST(xhci->hcs_params2) & 0x7; in xhci_get_isoc_frame_id()
3958 if (HCS_IST(xhci->hcs_params2) & (1 << 3)) in xhci_get_isoc_frame_id()
3974 current_frame_id = readl(&xhci->run_regs->microframe_index); in xhci_get_isoc_frame_id()
3982 xhci_dbg(xhci, "%s: index %d, reg 0x%x start_frame_id 0x%x, end_frame_id 0x%x, start_frame 0x%x\n", in xhci_get_isoc_frame_id()
3983 __func__, index, readl(&xhci->run_regs->microframe_index), in xhci_get_isoc_frame_id()
4011 xhci_warn(xhci, "Frame ID %d (reg %d, index %d) beyond range (%d, %d)\n", in xhci_get_isoc_frame_id()
4014 xhci_warn(xhci, "Ignore frame ID field, use SIA bit instead\n"); in xhci_get_isoc_frame_id()
4022 static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i) in trb_block_event_intr() argument
4024 if (xhci->hci_version < 0x100) in trb_block_event_intr()
4033 if (i && xhci->quirks & XHCI_AVOID_BEI) in trb_block_event_intr()
4040 static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_isoc_tx() argument
4058 xep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_isoc_tx()
4059 ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; in xhci_queue_isoc_tx()
4063 xhci_dbg(xhci, "Isoc URB with zero packets?\n"); in xhci_queue_isoc_tx()
4088 burst_count = xhci_get_burst_count(xhci, urb, total_pkt_count); in xhci_queue_isoc_tx()
4089 last_burst_pkt_count = xhci_get_last_burst_packet_count(xhci, in xhci_queue_isoc_tx()
4094 ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, in xhci_queue_isoc_tx()
4106 HCC_CFC(xhci->hcc_params)) { in xhci_queue_isoc_tx()
4107 frame_id = xhci_get_isoc_frame_id(xhci, urb, i); in xhci_queue_isoc_tx()
4121 /* xhci 1.1 with ETE uses TD_Size field for TBC, old is Rsvdz */ in xhci_queue_isoc_tx()
4147 if (trb_block_event_intr(xhci, num_tds, i)) in xhci_queue_isoc_tx()
4156 remainder = xhci_td_remainder(xhci, running_total, in xhci_queue_isoc_tx()
4163 /* xhci 1.1 with ETE uses TD Size field for TBC */ in xhci_queue_isoc_tx()
4170 queue_trb(xhci, ep_ring, more_trbs_coming, in xhci_queue_isoc_tx()
4183 xhci_err(xhci, "ISOC TD length unmatch\n"); in xhci_queue_isoc_tx()
4190 if (HCC_CFC(xhci->hcc_params)) in xhci_queue_isoc_tx()
4193 if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) { in xhci_queue_isoc_tx()
4194 if (xhci->quirks & XHCI_AMD_PLL_FIX) in xhci_queue_isoc_tx()
4197 xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs++; in xhci_queue_isoc_tx()
4199 giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, in xhci_queue_isoc_tx()
4215 td_to_noop(xhci, ep_ring, &urb_priv->td[0], true); in xhci_queue_isoc_tx()
4229 * Update interval as xhci_queue_intr_tx does. Use xhci frame_index to
4233 int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_isoc_tx_prepare() argument
4245 xdev = xhci->devs[slot_id]; in xhci_queue_isoc_tx_prepare()
4246 xep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_isoc_tx_prepare()
4248 ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in xhci_queue_isoc_tx_prepare()
4258 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in xhci_queue_isoc_tx_prepare()
4267 check_interval(xhci, urb, ep_ctx); in xhci_queue_isoc_tx_prepare()
4270 if (HCC_CFC(xhci->hcc_params) && !list_empty(&ep_ring->td_list)) { in xhci_queue_isoc_tx_prepare()
4277 start_frame = readl(&xhci->run_regs->microframe_index); in xhci_queue_isoc_tx_prepare()
4283 ist = HCS_IST(xhci->hcs_params2) & 0x7; in xhci_queue_isoc_tx_prepare()
4284 if (HCS_IST(xhci->hcs_params2) & (1 << 3)) in xhci_queue_isoc_tx_prepare()
4305 return xhci_queue_isoc_tx(xhci, mem_flags, urb, slot_id, ep_index); in xhci_queue_isoc_tx_prepare()
4315 * Don't decrement xhci->cmd_ring_reserved_trbs after we've queued the TRB
4318 static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in queue_command() argument
4322 int reserved_trbs = xhci->cmd_ring_reserved_trbs; in queue_command()
4325 if ((xhci->xhc_state & XHCI_STATE_DYING) || in queue_command()
4326 (xhci->xhc_state & XHCI_STATE_HALTED)) { in queue_command()
4327 xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n"); in queue_command()
4334 ret = prepare_ring(xhci, xhci->cmd_ring, EP_STATE_RUNNING, in queue_command()
4337 xhci_err(xhci, "ERR: No room for command on command ring\n"); in queue_command()
4339 xhci_err(xhci, "ERR: Reserved TRB counting for " in queue_command()
4344 cmd->command_trb = xhci->cmd_ring->enqueue; in queue_command()
4347 if (list_empty(&xhci->cmd_list)) { in queue_command()
4348 xhci->current_cmd = cmd; in queue_command()
4349 xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); in queue_command()
4352 list_add_tail(&cmd->cmd_list, &xhci->cmd_list); in queue_command()
4354 queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3, in queue_command()
4355 field4 | xhci->cmd_ring->cycle_state); in queue_command()
4360 int xhci_queue_slot_control(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_slot_control() argument
4363 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_slot_control()
4368 int xhci_queue_address_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_address_device() argument
4371 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_address_device()
4377 int xhci_queue_vendor_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_vendor_command() argument
4380 return queue_command(xhci, cmd, field1, field2, field3, field4, false); in xhci_queue_vendor_command()
4384 int xhci_queue_reset_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_device() argument
4387 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_device()
4393 int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, in xhci_queue_configure_endpoint() argument
4397 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_configure_endpoint()
4404 int xhci_queue_evaluate_context(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_evaluate_context() argument
4407 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_evaluate_context()
4417 int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_stop_endpoint() argument
4425 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_stop_endpoint()
4430 int xhci_queue_reset_ep(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_ep() argument
4441 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_ep()