Lines Matching full:xhci
3 * xHCI host controller driver
59 #include "xhci.h"
60 #include "xhci-trace.h"
62 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()
189 xhci_warn(xhci, "Ring is an endless link TRB loop\n"); in inc_deq()
210 * xHCI hardware can't handle the chain bit being cleared on a link TRB.
215 static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, in inc_enq() argument
225 xhci_err(xhci, "Tried to move enqueue past ring segment\n"); in inc_enq()
249 (xhci->quirks & XHCI_AMD_0x96_HOST)) && in inc_enq()
250 !xhci_link_trb_quirk(xhci)) { in inc_enq()
267 xhci_warn(xhci, "%s: Ring link TRB loop\n", __func__); in inc_enq()
281 static unsigned int xhci_num_trbs_free(struct xhci_hcd *xhci, struct xhci_ring *ring) in xhci_num_trbs_free() argument
317 static unsigned int xhci_ring_expansion_needed(struct xhci_hcd *xhci, struct xhci_ring *ring, in xhci_ring_expansion_needed() argument
349 xhci_dbg(xhci, "Ring expansion by %d segments needed\n", in xhci_ring_expansion_needed()
351 xhci_dbg(xhci, "Adding %d trbs moves enq %d trbs into deq seg\n", in xhci_ring_expansion_needed()
362 void xhci_ring_cmd_db(struct xhci_hcd *xhci) in xhci_ring_cmd_db() argument
364 if (!(xhci->cmd_ring_state & CMD_RING_STATE_RUNNING)) in xhci_ring_cmd_db()
367 xhci_dbg(xhci, "// Ding dong!\n"); in xhci_ring_cmd_db()
371 writel(DB_VALUE_HOST, &xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
373 readl(&xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
376 static bool xhci_mod_cmd_timer(struct xhci_hcd *xhci) in xhci_mod_cmd_timer() argument
378 return mod_delayed_work(system_wq, &xhci->cmd_timer, in xhci_mod_cmd_timer()
379 msecs_to_jiffies(xhci->current_cmd->timeout_ms)); in xhci_mod_cmd_timer()
382 static struct xhci_command *xhci_next_queued_cmd(struct xhci_hcd *xhci) in xhci_next_queued_cmd() argument
384 return list_first_entry_or_null(&xhci->cmd_list, struct xhci_command, in xhci_next_queued_cmd()
391 * This must be called with command ring stopped and xhci->lock held.
393 static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci, in xhci_handle_stopped_cmd_ring() argument
399 list_for_each_entry(i_cmd, &xhci->cmd_list, cmd_list) { in xhci_handle_stopped_cmd_ring()
406 xhci_dbg(xhci, "Turn aborted command %p to no-op\n", in xhci_handle_stopped_cmd_ring()
417 xhci->cmd_ring_state = CMD_RING_STATE_RUNNING; in xhci_handle_stopped_cmd_ring()
420 if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) && in xhci_handle_stopped_cmd_ring()
421 !(xhci->xhc_state & XHCI_STATE_DYING)) { in xhci_handle_stopped_cmd_ring()
422 xhci->current_cmd = cur_cmd; in xhci_handle_stopped_cmd_ring()
424 xhci_mod_cmd_timer(xhci); in xhci_handle_stopped_cmd_ring()
425 xhci_ring_cmd_db(xhci); in xhci_handle_stopped_cmd_ring()
429 /* Must be called with xhci->lock held, releases and aquires lock back */
430 static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags) in xhci_abort_cmd_ring() argument
432 struct xhci_segment *new_seg = xhci->cmd_ring->deq_seg; in xhci_abort_cmd_ring()
433 union xhci_trb *new_deq = xhci->cmd_ring->dequeue; in xhci_abort_cmd_ring()
437 xhci_dbg(xhci, "Abort command ring\n"); in xhci_abort_cmd_ring()
439 reinit_completion(&xhci->cmd_ring_stop_completion); in xhci_abort_cmd_ring()
449 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
451 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
454 xhci_write_64(xhci, crcr | CMD_RING_ABORT, &xhci->op_regs->cmd_ring); in xhci_abort_cmd_ring()
456 /* Section 4.6.1.2 of xHCI 1.0 spec says software should also time the in xhci_abort_cmd_ring()
462 ret = xhci_handshake(&xhci->op_regs->cmd_ring, in xhci_abort_cmd_ring()
465 xhci_err(xhci, "Abort failed to stop command ring: %d\n", ret); in xhci_abort_cmd_ring()
466 xhci_halt(xhci); in xhci_abort_cmd_ring()
467 xhci_hc_died(xhci); in xhci_abort_cmd_ring()
476 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_abort_cmd_ring()
477 ret = wait_for_completion_timeout(&xhci->cmd_ring_stop_completion, in xhci_abort_cmd_ring()
479 spin_lock_irqsave(&xhci->lock, flags); in xhci_abort_cmd_ring()
481 xhci_dbg(xhci, "No stop event for abort, ring start fail?\n"); in xhci_abort_cmd_ring()
482 xhci_cleanup_command_queue(xhci); in xhci_abort_cmd_ring()
484 xhci_handle_stopped_cmd_ring(xhci, xhci_next_queued_cmd(xhci)); in xhci_abort_cmd_ring()
489 void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, in xhci_ring_ep_doorbell() argument
494 __le32 __iomem *db_addr = &xhci->dba->doorbell[slot_id]; in xhci_ring_ep_doorbell()
495 struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_ring_ep_doorbell()
516 static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in ring_doorbell_for_active_rings() argument
523 ep = &xhci->devs[slot_id]->eps[ep_index]; in ring_doorbell_for_active_rings()
528 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0); in ring_doorbell_for_active_rings()
536 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, in ring_doorbell_for_active_rings()
541 void xhci_ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in xhci_ring_doorbell_for_active_rings() argument
545 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_ring_doorbell_for_active_rings()
548 static struct xhci_virt_ep *xhci_get_virt_ep(struct xhci_hcd *xhci, in xhci_get_virt_ep() argument
553 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in xhci_get_virt_ep()
557 xhci_warn(xhci, "Invalid endpoint index %u\n", ep_index); in xhci_get_virt_ep()
560 if (!xhci->devs[slot_id]) { in xhci_get_virt_ep()
561 xhci_warn(xhci, "No xhci virt device for slot_id %u\n", slot_id); in xhci_get_virt_ep()
565 return &xhci->devs[slot_id]->eps[ep_index]; in xhci_get_virt_ep()
568 static struct xhci_ring *xhci_virt_ep_to_ring(struct xhci_hcd *xhci, in xhci_virt_ep_to_ring() argument
580 xhci_warn(xhci, "Invalid stream_id %u request for slot_id %u ep_index %u\n", in xhci_virt_ep_to_ring()
592 struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci, in xhci_triad_to_transfer_ring() argument
598 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_triad_to_transfer_ring()
602 return xhci_virt_ep_to_ring(xhci, ep, stream_id); in xhci_triad_to_transfer_ring()
612 static u64 xhci_get_hw_deq(struct xhci_hcd *xhci, struct xhci_virt_device *vdev, in xhci_get_hw_deq() argument
625 ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); in xhci_get_hw_deq()
629 static int xhci_move_dequeue_past_td(struct xhci_hcd *xhci, in xhci_move_dequeue_past_td() argument
633 struct xhci_virt_device *dev = xhci->devs[slot_id]; in xhci_move_dequeue_past_td()
647 ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, in xhci_move_dequeue_past_td()
650 xhci_warn(xhci, "WARN can't find new dequeue, invalid stream ID %u\n", in xhci_move_dequeue_past_td()
666 xhci_dbg(xhci, "ep ring empty, Set new dequeue = enqueue"); in xhci_move_dequeue_past_td()
669 xhci_warn(xhci, "Can't find new dequeue state, missing td\n"); in xhci_move_dequeue_past_td()
674 hw_dequeue = xhci_get_hw_deq(xhci, dev, ep_index, stream_id); in xhci_move_dequeue_past_td()
699 next_trb(xhci, ep_ring, &new_seg, &new_deq); in xhci_move_dequeue_past_td()
703 xhci_err(xhci, "Error: Failed finding new dequeue state\n"); in xhci_move_dequeue_past_td()
714 xhci_warn(xhci, "Can't find dma of new dequeue ptr\n"); in xhci_move_dequeue_past_td()
715 xhci_warn(xhci, "deq seg = %p, deq ptr = %p\n", new_seg, new_deq); in xhci_move_dequeue_past_td()
720 xhci_warn(xhci, "Set TR Deq already pending, don't submit for 0x%pad\n", in xhci_move_dequeue_past_td()
726 cmd = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_move_dequeue_past_td()
728 xhci_warn(xhci, "Can't alloc Set TR Deq cmd 0x%pad\n", &addr); in xhci_move_dequeue_past_td()
734 ret = queue_command(xhci, cmd, in xhci_move_dequeue_past_td()
740 xhci_free_command(xhci, cmd); in xhci_move_dequeue_past_td()
746 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_move_dequeue_past_td()
755 xhci_ring_cmd_db(xhci); in xhci_move_dequeue_past_td()
763 static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in td_to_noop() argument
779 next_trb(xhci, ep_ring, &seg, &trb); in td_to_noop()
784 * Must be called with xhci->lock held in interrupt context,
785 * releases and re-acquires xhci->lock
787 static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci, in xhci_giveback_urb_in_irq() argument
795 xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--; in xhci_giveback_urb_in_irq()
796 if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) { in xhci_giveback_urb_in_irq()
797 if (xhci->quirks & XHCI_AMD_PLL_FIX) in xhci_giveback_urb_in_irq()
807 static void xhci_unmap_td_bounce_buffer(struct xhci_hcd *xhci, in xhci_unmap_td_bounce_buffer() argument
810 struct device *dev = xhci_to_hcd(xhci)->self.sysdev; in xhci_unmap_td_bounce_buffer()
831 xhci_warn(xhci, "WARN Wrong bounce buffer read length: %zu != %d\n", in xhci_unmap_td_bounce_buffer()
841 static int xhci_td_cleanup(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_td_cleanup() argument
850 xhci_unmap_td_bounce_buffer(xhci, ep_ring, td); in xhci_td_cleanup()
858 xhci_warn(xhci, "URB req %u and actual %u transfer length mismatch\n", in xhci_td_cleanup()
876 xhci_dbg(xhci, "Giveback URB %p, len = %d, expected = %d, status = %d\n", in xhci_td_cleanup()
883 xhci_giveback_urb_in_irq(xhci, td, status); in xhci_td_cleanup()
899 ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_giveback_invalidated_tds()
902 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_giveback_invalidated_tds()
904 xhci_td_cleanup(ep->xhci, td, ring, td->status); in xhci_giveback_invalidated_tds()
906 xhci_dbg(ep->xhci, "%s: Keep cancelled URB %p TD as cancel_status is %d\n", in xhci_giveback_invalidated_tds()
909 if (ep->xhci->xhc_state & XHCI_STATE_DYING) in xhci_giveback_invalidated_tds()
914 static int xhci_reset_halted_ep(struct xhci_hcd *xhci, unsigned int slot_id, in xhci_reset_halted_ep() argument
920 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_reset_halted_ep()
926 xhci_dbg(xhci, "%s-reset ep %u, slot %u\n", in xhci_reset_halted_ep()
930 ret = xhci_queue_reset_ep(xhci, command, slot_id, ep_index, reset_type); in xhci_reset_halted_ep()
933 xhci_err(xhci, "ERROR queuing reset endpoint for slot %d ep_index %d, %d\n", in xhci_reset_halted_ep()
938 static int xhci_handle_halted_endpoint(struct xhci_hcd *xhci, in xhci_handle_halted_endpoint() argument
963 xhci_dbg(xhci, "Reset ep command for ep_index %d already pending\n", in xhci_handle_halted_endpoint()
968 err = xhci_reset_halted_ep(xhci, slot_id, ep->ep_index, reset_type); in xhci_handle_halted_endpoint()
974 xhci_ring_cmd_db(xhci); in xhci_handle_halted_endpoint()
981 * We have the xHCI lock, so nothing can modify this list until we drop it.
990 struct xhci_hcd *xhci; in xhci_invalidate_cancelled_tds() local
1006 xhci = ep->xhci; in xhci_invalidate_cancelled_tds()
1009 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_invalidate_cancelled_tds()
1015 ring = xhci_urb_to_transfer_ring(xhci, td->urb); in xhci_invalidate_cancelled_tds()
1017 xhci_warn(xhci, "WARN Cancelled URB %p has invalid stream ID %u.\n", in xhci_invalidate_cancelled_tds()
1027 hw_deq = xhci_get_hw_deq(xhci, ep->vdev, ep->ep_index, in xhci_invalidate_cancelled_tds()
1032 trb_in_td(xhci, td->start_seg, td->first_trb, td->last_trb, hw_deq, false)) { in xhci_invalidate_cancelled_tds()
1043 xhci_dbg(xhci, in xhci_invalidate_cancelled_tds()
1051 xhci_warn(xhci, in xhci_invalidate_cancelled_tds()
1055 td_to_noop(xhci, ring, cached_td, false); in xhci_invalidate_cancelled_tds()
1058 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1064 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1073 err = xhci_move_dequeue_past_td(xhci, slot_id, ep->ep_index, in xhci_invalidate_cancelled_tds()
1087 xhci_warn(xhci, "Failed to clear cancelled cached URB %p, mark clear anyway\n", in xhci_invalidate_cancelled_tds()
1089 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1101 * Call under xhci->lock on a stopped endpoint.
1119 hw_deq = xhci_get_hw_deq(ep->xhci, ep->vdev, ep->ep_index, 0); in find_halted_td()
1122 if (trb_in_td(ep->xhci, td->start_seg, td->first_trb, in find_halted_td()
1139 static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_stop_ep() argument
1151 if (!xhci->devs[slot_id]) in xhci_handle_cmd_stop_ep()
1152 xhci_warn(xhci, "Stop endpoint command completion for disabled slot %u\n", in xhci_handle_cmd_stop_ep()
1158 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
1162 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_stop_ep()
1183 xhci_dbg(xhci, "Stop ep completion raced with stall\n"); in xhci_handle_cmd_stop_ep()
1200 err = xhci_handle_halted_endpoint(xhci, ep, td, reset_type); in xhci_handle_cmd_stop_ep()
1201 xhci_dbg(xhci, "Stop ep completion resetting ep, status %d\n", err); in xhci_handle_cmd_stop_ep()
1210 * Per xHCI 4.6.9, Stop Endpoint command on a Stopped in xhci_handle_cmd_stop_ep()
1232 xhci_dbg(xhci, "Stop ep completion ctx error, ctx_state %d\n", in xhci_handle_cmd_stop_ep()
1241 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_handle_cmd_stop_ep()
1246 xhci_queue_stop_endpoint(xhci, command, slot_id, ep_index, 0); in xhci_handle_cmd_stop_ep()
1247 xhci_ring_cmd_db(xhci); in xhci_handle_cmd_stop_ep()
1261 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
1264 static void xhci_kill_ring_urbs(struct xhci_hcd *xhci, struct xhci_ring *ring) in xhci_kill_ring_urbs() argument
1275 xhci_unmap_td_bounce_buffer(xhci, ring, cur_td); in xhci_kill_ring_urbs()
1279 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_ring_urbs()
1283 static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci, in xhci_kill_endpoint_urbs() argument
1291 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_kill_endpoint_urbs()
1305 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1308 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1314 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1317 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1326 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_endpoint_urbs()
1336 * Call with xhci->lock held.
1339 void xhci_hc_died(struct xhci_hcd *xhci) in xhci_hc_died() argument
1343 if (xhci->xhc_state & XHCI_STATE_DYING) in xhci_hc_died()
1346 xhci_err(xhci, "xHCI host controller not responding, assume dead\n"); in xhci_hc_died()
1347 xhci->xhc_state |= XHCI_STATE_DYING; in xhci_hc_died()
1349 xhci_cleanup_command_queue(xhci); in xhci_hc_died()
1352 for (i = 0; i <= HCS_MAX_SLOTS(xhci->hcs_params1); i++) { in xhci_hc_died()
1353 if (!xhci->devs[i]) in xhci_hc_died()
1356 xhci_kill_endpoint_urbs(xhci, i, j); in xhci_hc_died()
1360 if (!(xhci->xhc_state & XHCI_STATE_REMOVING)) in xhci_hc_died()
1361 usb_hc_died(xhci_to_hcd(xhci)); in xhci_hc_died()
1364 static void update_ring_for_set_deq_completion(struct xhci_hcd *xhci, in update_ring_for_set_deq_completion() argument
1395 xhci_dbg(xhci, "Unable to find new dequeue pointer\n"); in update_ring_for_set_deq_completion()
1408 static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_set_deq() argument
1421 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1425 ep_ring = xhci_virt_ep_to_ring(xhci, ep, stream_id); in xhci_handle_cmd_set_deq()
1427 xhci_warn(xhci, "WARN Set TR deq ptr command for freed stream ID %u\n", in xhci_handle_cmd_set_deq()
1433 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_set_deq()
1434 slot_ctx = xhci_get_slot_ctx(xhci, ep->vdev->out_ctx); in xhci_handle_cmd_set_deq()
1444 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd invalid because of stream ID configuration\n"); in xhci_handle_cmd_set_deq()
1447 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.\n"); in xhci_handle_cmd_set_deq()
1451 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1456 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed because slot %u was not enabled.\n", in xhci_handle_cmd_set_deq()
1460 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd with unknown completion code of %u.\n", in xhci_handle_cmd_set_deq()
1479 * Cadence xHCI controllers store some endpoint state in xhci_handle_cmd_set_deq()
1487 if (xhci->quirks & XHCI_CDNS_SCTX_QUIRK) { in xhci_handle_cmd_set_deq()
1494 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1501 update_ring_for_set_deq_completion(xhci, ep->vdev, in xhci_handle_cmd_set_deq()
1504 xhci_warn(xhci, "Mismatch between completed Set TR Deq Ptr command & xHCI internal state.\n"); in xhci_handle_cmd_set_deq()
1505 xhci_warn(xhci, "ep deq seg = %p, deq ptr = %p\n", in xhci_handle_cmd_set_deq()
1512 ep_ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_handle_cmd_set_deq()
1515 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_handle_cmd_set_deq()
1517 xhci_td_cleanup(ep->xhci, td, ep_ring, td->status); in xhci_handle_cmd_set_deq()
1519 xhci_dbg(ep->xhci, "%s: Keep cancelled URB %p TD as cancel_status is %d\n", in xhci_handle_cmd_set_deq()
1530 xhci_dbg(ep->xhci, "%s: Pending TDs to clear, continuing with invalidation\n", in xhci_handle_cmd_set_deq()
1534 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1539 xhci_dbg(ep->xhci, "%s: All TDs cleared, ring doorbell\n", __func__); in xhci_handle_cmd_set_deq()
1540 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1544 static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_reset_ep() argument
1552 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1556 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_reset_ep()
1562 xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, in xhci_handle_cmd_reset_ep()
1575 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1578 static void xhci_handle_cmd_enable_slot(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_enable_slot() argument
1587 static void xhci_handle_cmd_disable_slot(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_disable_slot() argument
1592 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_disable_slot()
1596 slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); in xhci_handle_cmd_disable_slot()
1599 if (xhci->quirks & XHCI_EP_LIMIT_QUIRK) in xhci_handle_cmd_disable_slot()
1601 xhci_free_device_endpoint_resources(xhci, virt_dev, true); in xhci_handle_cmd_disable_slot()
1604 static void xhci_handle_cmd_config_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_config_ep() argument
1618 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_config_ep()
1623 xhci_warn(xhci, "Could not get input context, bad type.\n"); in xhci_handle_cmd_config_ep()
1632 ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->out_ctx, ep_index); in xhci_handle_cmd_config_ep()
1638 static void xhci_handle_cmd_addr_dev(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_addr_dev() argument
1643 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_addr_dev()
1646 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_addr_dev()
1650 static void xhci_handle_cmd_reset_dev(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_reset_dev() argument
1655 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_reset_dev()
1657 xhci_warn(xhci, "Reset device command completion for disabled slot %u\n", in xhci_handle_cmd_reset_dev()
1661 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_reset_dev()
1664 xhci_dbg(xhci, "Completed reset device command.\n"); in xhci_handle_cmd_reset_dev()
1667 static void xhci_handle_cmd_nec_get_fw(struct xhci_hcd *xhci, in xhci_handle_cmd_nec_get_fw() argument
1670 if (!(xhci->quirks & XHCI_NEC_HOST)) { in xhci_handle_cmd_nec_get_fw()
1671 xhci_warn(xhci, "WARN NEC_GET_FW command on non-NEC host\n"); in xhci_handle_cmd_nec_get_fw()
1674 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, in xhci_handle_cmd_nec_get_fw()
1692 void xhci_cleanup_command_queue(struct xhci_hcd *xhci) in xhci_cleanup_command_queue() argument
1695 xhci->current_cmd = NULL; in xhci_cleanup_command_queue()
1696 list_for_each_entry_safe(cur_cmd, tmp_cmd, &xhci->cmd_list, cmd_list) in xhci_cleanup_command_queue()
1702 struct xhci_hcd *xhci; in xhci_handle_command_timeout() local
1709 xhci = container_of(to_delayed_work(work), struct xhci_hcd, cmd_timer); in xhci_handle_command_timeout()
1711 spin_lock_irqsave(&xhci->lock, flags); in xhci_handle_command_timeout()
1717 if (!xhci->current_cmd || delayed_work_pending(&xhci->cmd_timer)) { in xhci_handle_command_timeout()
1718 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1722 cmd_field3 = le32_to_cpu(xhci->current_cmd->command_trb->generic.field[3]); in xhci_handle_command_timeout()
1723 usbsts = readl(&xhci->op_regs->status); in xhci_handle_command_timeout()
1724 xhci_dbg(xhci, "Command timeout, USBSTS:%s\n", xhci_decode_usbsts(str, usbsts)); in xhci_handle_command_timeout()
1726 /* Bail out and tear down xhci if a stop endpoint command failed */ in xhci_handle_command_timeout()
1730 xhci_warn(xhci, "xHCI host not responding to stop endpoint command\n"); in xhci_handle_command_timeout()
1732 ep = xhci_get_virt_ep(xhci, TRB_TO_SLOT_ID(cmd_field3), in xhci_handle_command_timeout()
1737 xhci_halt(xhci); in xhci_handle_command_timeout()
1738 xhci_hc_died(xhci); in xhci_handle_command_timeout()
1743 xhci->current_cmd->status = COMP_COMMAND_ABORTED; in xhci_handle_command_timeout()
1746 hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); in xhci_handle_command_timeout()
1748 xhci_hc_died(xhci); in xhci_handle_command_timeout()
1752 if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && in xhci_handle_command_timeout()
1755 xhci->cmd_ring_state = CMD_RING_STATE_ABORTED; in xhci_handle_command_timeout()
1756 xhci_dbg(xhci, "Command timeout\n"); in xhci_handle_command_timeout()
1757 xhci_abort_cmd_ring(xhci, flags); in xhci_handle_command_timeout()
1762 if (xhci->xhc_state & XHCI_STATE_REMOVING) { in xhci_handle_command_timeout()
1763 xhci_dbg(xhci, "host removed, ring start fail?\n"); in xhci_handle_command_timeout()
1764 xhci_cleanup_command_queue(xhci); in xhci_handle_command_timeout()
1770 xhci_dbg(xhci, "Command timeout on stopped ring\n"); in xhci_handle_command_timeout()
1771 xhci_handle_stopped_cmd_ring(xhci, xhci->current_cmd); in xhci_handle_command_timeout()
1774 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1778 static void handle_cmd_completion(struct xhci_hcd *xhci, in handle_cmd_completion() argument
1790 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in handle_cmd_completion()
1795 cmd_trb = xhci->cmd_ring->dequeue; in handle_cmd_completion()
1797 trace_xhci_handle_command(xhci->cmd_ring, &cmd_trb->generic); in handle_cmd_completion()
1803 complete_all(&xhci->cmd_ring_stop_completion); in handle_cmd_completion()
1807 cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg, in handle_cmd_completion()
1814 xhci_warn(xhci, in handle_cmd_completion()
1819 cmd = list_first_entry(&xhci->cmd_list, struct xhci_command, cmd_list); in handle_cmd_completion()
1821 cancel_delayed_work(&xhci->cmd_timer); in handle_cmd_completion()
1823 if (cmd->command_trb != xhci->cmd_ring->dequeue) { in handle_cmd_completion()
1824 xhci_err(xhci, in handle_cmd_completion()
1836 xhci->cmd_ring_state = CMD_RING_STATE_STOPPED; in handle_cmd_completion()
1838 if (xhci->current_cmd == cmd) in handle_cmd_completion()
1839 xhci->current_cmd = NULL; in handle_cmd_completion()
1847 xhci_handle_cmd_enable_slot(xhci, slot_id, cmd, cmd_comp_code); in handle_cmd_completion()
1850 xhci_handle_cmd_disable_slot(xhci, slot_id); in handle_cmd_completion()
1854 xhci_handle_cmd_config_ep(xhci, slot_id, cmd_comp_code); in handle_cmd_completion()
1859 xhci_handle_cmd_addr_dev(xhci, slot_id); in handle_cmd_completion()
1865 xhci_handle_cmd_stop_ep(xhci, slot_id, cmd_trb, in handle_cmd_completion()
1871 xhci_handle_cmd_set_deq(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1881 xhci_handle_cmd_reset_ep(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1885 * Use the SLOT_ID from the command TRB instead (xhci 4.6.11) in handle_cmd_completion()
1889 xhci_handle_cmd_reset_dev(xhci, slot_id); in handle_cmd_completion()
1892 xhci_handle_cmd_nec_get_fw(xhci, event); in handle_cmd_completion()
1896 xhci_info(xhci, "INFO unknown command type %d\n", cmd_type); in handle_cmd_completion()
1901 if (!list_is_singular(&xhci->cmd_list)) { in handle_cmd_completion()
1902 xhci->current_cmd = list_first_entry(&cmd->cmd_list, in handle_cmd_completion()
1904 xhci_mod_cmd_timer(xhci); in handle_cmd_completion()
1905 } else if (xhci->current_cmd == cmd) { in handle_cmd_completion()
1906 xhci->current_cmd = NULL; in handle_cmd_completion()
1912 inc_deq(xhci, xhci->cmd_ring); in handle_cmd_completion()
1915 static void handle_vendor_event(struct xhci_hcd *xhci, in handle_vendor_event() argument
1918 xhci_dbg(xhci, "Vendor specific event TRB type = %u\n", trb_type); in handle_vendor_event()
1919 if (trb_type == TRB_NEC_CMD_COMP && (xhci->quirks & XHCI_NEC_HOST)) in handle_vendor_event()
1920 handle_cmd_completion(xhci, &event->event_cmd); in handle_vendor_event()
1923 static void handle_device_notification(struct xhci_hcd *xhci, in handle_device_notification() argument
1930 if (!xhci->devs[slot_id]) { in handle_device_notification()
1931 xhci_warn(xhci, "Device Notification event for " in handle_device_notification()
1936 xhci_dbg(xhci, "Device Wake Notification event for slot ID %u\n", in handle_device_notification()
1938 udev = xhci->devs[slot_id]->udev; in handle_device_notification()
1944 * Quirk hanlder for errata seen on Cavium ThunderX2 processor XHCI
1955 static void xhci_cavium_reset_phy_quirk(struct xhci_hcd *xhci) in xhci_cavium_reset_phy_quirk() argument
1957 struct usb_hcd *hcd = xhci_to_hcd(xhci); in xhci_cavium_reset_phy_quirk()
1972 static void handle_port_status(struct xhci_hcd *xhci, in handle_port_status() argument
1988 xhci_warn(xhci, in handle_port_status()
1992 max_ports = HCS_MAX_PORTS(xhci->hcs_params1); in handle_port_status()
1995 xhci_warn(xhci, "Port change event with invalid port ID %d\n", in handle_port_status()
1997 inc_deq(xhci, ir->event_ring); in handle_port_status()
2001 port = &xhci->hw_ports[port_id - 1]; in handle_port_status()
2003 xhci_warn(xhci, "Port change event, no port for port ID %u\n", in handle_port_status()
2010 if (port->rhub == &xhci->usb3_rhub && xhci->shared_hcd == NULL) { in handle_port_status()
2011 xhci_dbg(xhci, "ignore port event for removed USB3 hcd\n"); in handle_port_status()
2021 xhci_dbg(xhci, "Port change event, %d-%d, id %d, portsc: 0x%x\n", in handle_port_status()
2027 xhci_dbg(xhci, "resume root hub\n"); in handle_port_status()
2033 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
2034 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
2035 xhci->devs[slot_id]->flags |= VDEV_PORT_ERROR; in handle_port_status()
2039 xhci_dbg(xhci, "port resume event for port %d\n", port_id); in handle_port_status()
2041 cmd_reg = readl(&xhci->op_regs->command); in handle_port_status()
2043 xhci_warn(xhci, "xHC is not running.\n"); in handle_port_status()
2048 xhci_dbg(xhci, "remote wake SS port %d\n", port_id); in handle_port_status()
2054 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
2056 xhci_set_link_state(xhci, port, XDEV_U0); in handle_port_status()
2063 xhci_dbg(xhci, "resume HS port %d\n", port_id); in handle_port_status()
2084 xhci_dbg(xhci, "resume SS port %d finished\n", port_id); in handle_port_status()
2093 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
2094 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
2095 xhci_ring_device(xhci, slot_id); in handle_port_status()
2097 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
2106 * Check to see if xhci-hub.c is waiting on RExit to U0 transition (or in handle_port_status()
2118 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
2119 if ((xhci->quirks & XHCI_RESET_PLL_ON_DISCONNECT) && in handle_port_status()
2121 xhci_cavium_reset_phy_quirk(xhci); in handle_port_status()
2126 inc_deq(xhci, ir->event_ring); in handle_port_status()
2136 * xHCI port-status-change events occur when the "or" of all the in handle_port_status()
2142 xhci_dbg(xhci, "%s: starting usb%d port polling.\n", in handle_port_status()
2145 spin_unlock(&xhci->lock); in handle_port_status()
2148 spin_lock(&xhci->lock); in handle_port_status()
2157 struct xhci_segment *trb_in_td(struct xhci_hcd *xhci, in trb_in_td() argument
2182 xhci_warn(xhci, in trb_in_td()
2218 static void xhci_clear_hub_tt_buffer(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_clear_hub_tt_buffer() argument
2226 (td->urb->dev->tt->hub != xhci_to_hcd(xhci)->self.root_hub) && in xhci_clear_hub_tt_buffer()
2241 static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci, in xhci_requires_manual_halt_cleanup() argument
2261 int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code) in xhci_is_vendor_info_code() argument
2267 xhci_dbg(xhci, "Vendor defined info completion code %u\n", in xhci_is_vendor_info_code()
2269 xhci_dbg(xhci, "Treating code as success.\n"); in xhci_is_vendor_info_code()
2275 static int finish_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in finish_td() argument
2281 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in finish_td()
2315 xhci_dbg(xhci, "Already resolving halted ep for 0x%llx\n", in finish_td()
2324 xhci_clear_hub_tt_buffer(xhci, td, ep); in finish_td()
2325 xhci_handle_halted_endpoint(xhci, ep, td, EP_HARD_RESET); in finish_td()
2329 * xhci internal endpoint state will go to a "halt" state for in finish_td()
2339 xhci_clear_hub_tt_buffer(xhci, td, ep); in finish_td()
2341 xhci_handle_halted_endpoint(xhci, ep, td, EP_HARD_RESET); in finish_td()
2351 inc_deq(xhci, ep_ring); in finish_td()
2353 return xhci_td_cleanup(xhci, td, ep_ring, td->status); in finish_td()
2357 static int sum_trb_lengths(struct xhci_hcd *xhci, struct xhci_ring *ring, in sum_trb_lengths() argument
2364 for (sum = 0; trb != stop_trb; next_trb(xhci, ring, &seg, &trb)) { in sum_trb_lengths()
2374 static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_ctrl_td() argument
2384 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in process_ctrl_td()
2392 xhci_warn(xhci, "WARN: Success on ctrl %s TRB without IOC set?\n", in process_ctrl_td()
2406 xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n"); in process_ctrl_td()
2421 xhci_warn(xhci, "WARN: unexpected TRB Type %d\n", in process_ctrl_td()
2428 if (!xhci_requires_manual_halt_cleanup(xhci, in process_ctrl_td()
2431 xhci_dbg(xhci, "TRB error %u, halted endpoint index = %u\n", in process_ctrl_td()
2455 xhci_dbg(xhci, "Waiting for status stage event\n"); in process_ctrl_td()
2464 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_ctrl_td()
2470 static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_isoc_td() argument
2495 /* Don't overwrite status if TD had an error, see xHCI 4.9.1 */ in process_isoc_td()
2552 frame->actual_length = sum_trb_lengths(xhci, ep->ring, ep_trb) + in process_isoc_td()
2562 xhci_dbg(xhci, "Error mid isoc TD, wait for final completion event\n"); in process_isoc_td()
2567 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_isoc_td()
2570 static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, in skip_isoc_td() argument
2590 inc_deq(xhci, ep->ring); in skip_isoc_td()
2592 return xhci_td_cleanup(xhci, td, ep->ring, status); in skip_isoc_td()
2598 static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_bulk_intr_td() argument
2606 slot_ctx = xhci_get_slot_ctx(xhci, ep->vdev->out_ctx); in process_bulk_intr_td()
2617 xhci_warn(xhci, "WARN Successful completion on short TX\n"); in process_bulk_intr_td()
2618 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2625 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2635 td->urb->actual_length = sum_trb_lengths(xhci, ep_ring, ep_trb); in process_bulk_intr_td()
2638 if (xhci->quirks & XHCI_NO_SOFT_RETRY || in process_bulk_intr_td()
2645 xhci_handle_halted_endpoint(xhci, ep, td, EP_SOFT_RESET); in process_bulk_intr_td()
2656 sum_trb_lengths(xhci, ep_ring, ep_trb) + in process_bulk_intr_td()
2660 xhci_warn(xhci, "bad transfer trb length %d in event trb\n", in process_bulk_intr_td()
2665 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_bulk_intr_td()
2673 static int handle_tx_event(struct xhci_hcd *xhci, in handle_tx_event() argument
2696 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in handle_tx_event()
2698 xhci_err(xhci, "ERROR Invalid Transfer event\n"); in handle_tx_event()
2703 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in handle_tx_event()
2706 xhci_err(xhci, in handle_tx_event()
2712 /* Some transfer events don't always point to a trb, see xhci 4.17.4 */ in handle_tx_event()
2719 xhci_dbg(xhci, "Stream transaction error ep %u no id\n", in handle_tx_event()
2722 xhci_handle_halted_endpoint(xhci, ep, NULL, in handle_tx_event()
2725 xhci_handle_halted_endpoint(xhci, ep, NULL, in handle_tx_event()
2733 xhci_err(xhci, "ERROR Transfer event for unknown stream ring slot %u ep %u\n", in handle_tx_event()
2751 xhci_dbg(xhci, "Successful completion on short TX for slot %u ep %u with last td short %d\n", in handle_tx_event()
2759 xhci_dbg(xhci, "Stopped on Transfer TRB for slot %u ep %u\n", in handle_tx_event()
2763 xhci_dbg(xhci, in handle_tx_event()
2768 xhci_dbg(xhci, in handle_tx_event()
2774 xhci_dbg(xhci, "Stalled endpoint for slot %u ep %u\n", slot_id, in handle_tx_event()
2779 xhci_dbg(xhci, "Split transaction error for slot %u ep %u\n", in handle_tx_event()
2784 xhci_dbg(xhci, "Transfer error for slot %u ep %u on endpoint\n", in handle_tx_event()
2789 xhci_dbg(xhci, "Babble error for slot %u ep %u on endpoint\n", in handle_tx_event()
2795 xhci_warn(xhci, in handle_tx_event()
2802 xhci_warn(xhci, in handle_tx_event()
2808 xhci_warn(xhci, in handle_tx_event()
2813 xhci_warn(xhci, in handle_tx_event()
2823 xhci_dbg(xhci, "underrun event on endpoint\n"); in handle_tx_event()
2825 xhci_dbg(xhci, "Underrun Event for slot %d ep %d " in handle_tx_event()
2831 xhci_dbg(xhci, "overrun event on endpoint\n"); in handle_tx_event()
2833 xhci_dbg(xhci, "Overrun Event for slot %d ep %d " in handle_tx_event()
2846 xhci_dbg(xhci, in handle_tx_event()
2852 xhci_dbg(xhci, in handle_tx_event()
2859 xhci_warn(xhci, in handle_tx_event()
2865 if (xhci_is_vendor_info_code(xhci, trb_comp_code)) { in handle_tx_event()
2869 xhci_warn(xhci, in handle_tx_event()
2891 xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n", in handle_tx_event()
2897 xhci_dbg(xhci, "td_list is empty while skip flag set. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2901 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
2903 xhci_handle_halted_endpoint(xhci, ep, NULL, in handle_tx_event()
2912 xhci_dbg(xhci, "All tds on the ep_ring skipped. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2923 ep_seg = trb_in_td(xhci, ep_ring->deq_seg, ep_ring->dequeue, in handle_tx_event()
2942 skip_isoc_td(xhci, td, ep, status); in handle_tx_event()
2950 if ((xhci->quirks & XHCI_SPURIOUS_SUCCESS) && in handle_tx_event()
2957 * xhci 4.10.2 states isoc endpoints should continue in handle_tx_event()
2961 * xhci 4.9.1 states that if there are errors in mult-TRB in handle_tx_event()
2971 ep_seg = trb_in_td(xhci, td_next->start_seg, td_next->first_trb, in handle_tx_event()
2975 xhci_dbg(xhci, "Missing TD completion event after mid TD error\n"); in handle_tx_event()
2978 inc_deq(xhci, ep_ring); in handle_tx_event()
2979 xhci_td_cleanup(xhci, td, ep_ring, td->status); in handle_tx_event()
2986 xhci_err(xhci, in handle_tx_event()
2991 trb_in_td(xhci, ep_ring->deq_seg, in handle_tx_event()
3003 xhci_dbg(xhci, in handle_tx_event()
3025 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
3027 xhci_handle_halted_endpoint(xhci, ep, td, in handle_tx_event()
3036 process_ctrl_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
3038 process_isoc_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
3040 process_bulk_intr_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
3051 inc_deq(xhci, ir->event_ring); in handle_tx_event()
3064 xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", in handle_tx_event()
3077 * xhci->lock between event processing (e.g. to pass up port status changes).
3081 static int xhci_handle_event(struct xhci_hcd *xhci, struct xhci_interrupter *ir) in xhci_handle_event() argument
3090 xhci_err(xhci, "ERROR interrupter not ready\n"); in xhci_handle_event()
3112 handle_cmd_completion(xhci, &event->event_cmd); in xhci_handle_event()
3115 handle_port_status(xhci, ir, event); in xhci_handle_event()
3119 ret = handle_tx_event(xhci, ir, &event->trans_event); in xhci_handle_event()
3124 handle_device_notification(xhci, event); in xhci_handle_event()
3128 handle_vendor_event(xhci, event, trb_type); in xhci_handle_event()
3130 xhci_warn(xhci, "ERROR unknown event type %d\n", trb_type); in xhci_handle_event()
3135 if (xhci->xhc_state & XHCI_STATE_DYING) { in xhci_handle_event()
3136 xhci_dbg(xhci, "xHCI host dying, returning from " in xhci_handle_event()
3143 inc_deq(xhci, ir->event_ring); in xhci_handle_event()
3156 static void xhci_update_erst_dequeue(struct xhci_hcd *xhci, in xhci_update_erst_dequeue() argument
3164 temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
3170 xhci_warn(xhci, "WARN something wrong with SW event ring dequeue ptr\n"); in xhci_update_erst_dequeue()
3187 xhci_write_64(xhci, temp_64, &ir->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
3191 * xHCI spec says we can get an interrupt, and if the HC has an error condition,
3197 struct xhci_hcd *xhci = hcd_to_xhci(hcd); in xhci_irq() local
3205 spin_lock(&xhci->lock); in xhci_irq()
3207 status = readl(&xhci->op_regs->status); in xhci_irq()
3209 xhci_hc_died(xhci); in xhci_irq()
3218 xhci_warn(xhci, "WARNING: Host Controller Error\n"); in xhci_irq()
3223 xhci_warn(xhci, "WARNING: Host System Error\n"); in xhci_irq()
3224 xhci_halt(xhci); in xhci_irq()
3235 writel(status, &xhci->op_regs->status); in xhci_irq()
3238 ir = xhci->interrupters[0]; in xhci_irq()
3246 if (xhci->xhc_state & XHCI_STATE_DYING || in xhci_irq()
3247 xhci->xhc_state & XHCI_STATE_HALTED) { in xhci_irq()
3248 xhci_dbg(xhci, "xHCI dying, ignoring interrupt. " in xhci_irq()
3253 temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); in xhci_irq()
3254 xhci_write_64(xhci, temp_64 | ERST_EHB, in xhci_irq()
3264 while (xhci_handle_event(xhci, ir) > 0) { in xhci_irq()
3267 xhci_update_erst_dequeue(xhci, ir, event_ring_deq, false); in xhci_irq()
3271 if (xhci->isoc_bei_interval > AVOID_BEI_INTERVAL_MIN) in xhci_irq()
3272 xhci->isoc_bei_interval = xhci->isoc_bei_interval / 2; in xhci_irq()
3277 xhci_update_erst_dequeue(xhci, ir, event_ring_deq, true); in xhci_irq()
3281 spin_unlock(&xhci->lock); in xhci_irq()
3301 static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, in queue_trb() argument
3317 inc_enq(xhci, ring, more_trbs_coming); in queue_trb()
3324 static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in prepare_ring() argument
3337 xhci_warn(xhci, "WARN urb submitted to disabled ep\n"); in prepare_ring()
3340 xhci_warn(xhci, "WARN waiting for error on ep to be cleared\n"); in prepare_ring()
3345 xhci_dbg(xhci, "WARN halted endpoint, queueing URB anyway.\n"); in prepare_ring()
3351 xhci_err(xhci, "ERROR unknown endpoint state for ep\n"); in prepare_ring()
3359 if (ep_ring != xhci->cmd_ring) { in prepare_ring()
3360 new_segs = xhci_ring_expansion_needed(xhci, ep_ring, num_trbs); in prepare_ring()
3361 } else if (xhci_num_trbs_free(xhci, ep_ring) <= num_trbs) { in prepare_ring()
3362 xhci_err(xhci, "Do not support expand command ring\n"); in prepare_ring()
3367 xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, in prepare_ring()
3369 if (xhci_ring_expansion(xhci, ep_ring, new_segs, mem_flags)) { in prepare_ring()
3370 xhci_err(xhci, "Ring expansion failed\n"); in prepare_ring()
3379 if (!xhci_link_trb_quirk(xhci) && in prepare_ring()
3381 (xhci->quirks & XHCI_AMD_0x96_HOST))) in prepare_ring()
3400 xhci_warn(xhci, "Ring is an endless link TRB loop\n"); in prepare_ring()
3406 xhci_warn(xhci, "Missing link TRB at end of ring segment\n"); in prepare_ring()
3413 static int prepare_transfer(struct xhci_hcd *xhci, in prepare_transfer() argument
3426 struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in prepare_transfer()
3428 ep_ring = xhci_triad_to_transfer_ring(xhci, xdev->slot_id, ep_index, in prepare_transfer()
3431 xhci_dbg(xhci, "Can't prepare ring for bad stream ID %u\n", in prepare_transfer()
3436 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in prepare_transfer()
3520 static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, in giveback_first_trb() argument
3533 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, stream_id); in giveback_first_trb()
3536 static void check_interval(struct xhci_hcd *xhci, struct urb *urb, in check_interval() argument
3555 "Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n", in check_interval()
3567 * xHCI uses normal TRBs for both bulk and interrupt. When the interrupt
3572 int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_intr_tx() argument
3577 ep_ctx = xhci_get_ep_ctx(xhci, xhci->devs[slot_id]->out_ctx, ep_index); in xhci_queue_intr_tx()
3578 check_interval(xhci, urb, ep_ctx); in xhci_queue_intr_tx()
3580 return xhci_queue_bulk_tx(xhci, mem_flags, urb, slot_id, ep_index); in xhci_queue_intr_tx()
3584 * For xHCI 1.0 host controllers, TD size is the number of max packet sized
3595 * For xHCI 0.96 and older, TD size field should be the remaining bytes
3603 static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred, in xhci_td_remainder() argument
3609 /* MTK xHCI 0.96 contains some features from 1.0 */ in xhci_td_remainder()
3610 if (xhci->hci_version < 0x100 && !(xhci->quirks & XHCI_MTK_HOST)) in xhci_td_remainder()
3618 /* for MTK xHCI 0.96, TD size include this TRB, but not in 1.x */ in xhci_td_remainder()
3619 if ((xhci->quirks & XHCI_MTK_HOST) && (xhci->hci_version < 0x100)) in xhci_td_remainder()
3630 static int xhci_align_td(struct xhci_hcd *xhci, struct urb *urb, u32 enqd_len, in xhci_align_td() argument
3633 struct device *dev = xhci_to_hcd(xhci)->self.sysdev; in xhci_align_td()
3646 xhci_dbg(xhci, "Unaligned %d bytes, buff len %d\n", in xhci_align_td()
3652 xhci_dbg(xhci, "split align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3672 xhci_warn(xhci, "WARN Wrong bounce buffer write length: %zu != %d\n", in xhci_align_td()
3687 xhci_warn(xhci, "Failed mapping bounce buffer, not aligning\n"); in xhci_align_td()
3694 xhci_dbg(xhci, "Bounce align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3700 int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_bulk_tx() argument
3718 ring = xhci_urb_to_transfer_ring(xhci, urb); in xhci_queue_bulk_tx()
3735 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3784 if (xhci_align_td(xhci, urb, enqd_len, in xhci_queue_bulk_tx()
3812 remainder = xhci_td_remainder(xhci, enqd_len, trb_buff_len, in xhci_queue_bulk_tx()
3819 queue_trb(xhci, ring, more_trbs_coming | need_zero_pkt, in xhci_queue_bulk_tx()
3844 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3850 queue_trb(xhci, ring, 0, 0, 0, TRB_INTR_TARGET(0), field); in xhci_queue_bulk_tx()
3855 giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, in xhci_queue_bulk_tx()
3860 /* Caller must have locked xhci->lock */
3861 int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_ctrl_tx() argument
3874 ep_ring = xhci_urb_to_transfer_ring(xhci, urb); in xhci_queue_ctrl_tx()
3885 if ((xhci->quirks & XHCI_ETRON_HOST) && in xhci_queue_ctrl_tx()
3894 queue_trb(xhci, ep_ring, false, 0, 0, in xhci_queue_ctrl_tx()
3908 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_ctrl_tx()
3934 /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */ in xhci_queue_ctrl_tx()
3935 if ((xhci->hci_version >= 0x100) || (xhci->quirks & XHCI_MTK_HOST)) { in xhci_queue_ctrl_tx()
3944 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3971 remainder = xhci_td_remainder(xhci, 0, in xhci_queue_ctrl_tx()
3980 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3997 queue_trb(xhci, ep_ring, false, in xhci_queue_ctrl_tx()
4004 giveback_first_trb(xhci, slot_id, ep_index, 0, in xhci_queue_ctrl_tx()
4015 * zero. Only xHCI 1.0 host controllers support this field.
4017 static unsigned int xhci_get_burst_count(struct xhci_hcd *xhci, in xhci_get_burst_count() argument
4022 if (xhci->hci_version < 0x100 || urb->dev->speed < USB_SPEED_SUPER) in xhci_get_burst_count()
4037 static unsigned int xhci_get_last_burst_packet_count(struct xhci_hcd *xhci, in xhci_get_last_burst_packet_count() argument
4043 if (xhci->hci_version < 0x100) in xhci_get_last_burst_packet_count()
4069 static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci, in xhci_get_isoc_frame_id() argument
4089 ist = HCS_IST(xhci->hcs_params2) & 0x7; in xhci_get_isoc_frame_id()
4090 if (HCS_IST(xhci->hcs_params2) & (1 << 3)) in xhci_get_isoc_frame_id()
4106 current_frame_id = readl(&xhci->run_regs->microframe_index); in xhci_get_isoc_frame_id()
4114 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()
4115 __func__, index, readl(&xhci->run_regs->microframe_index), in xhci_get_isoc_frame_id()
4143 xhci_warn(xhci, "Frame ID %d (reg %d, index %d) beyond range (%d, %d)\n", in xhci_get_isoc_frame_id()
4146 xhci_warn(xhci, "Ignore frame ID field, use SIA bit instead\n"); in xhci_get_isoc_frame_id()
4154 static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i) in trb_block_event_intr() argument
4156 if (xhci->hci_version < 0x100) in trb_block_event_intr()
4165 if (i && xhci->quirks & XHCI_AVOID_BEI) in trb_block_event_intr()
4166 return !!(i % xhci->isoc_bei_interval); in trb_block_event_intr()
4172 static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_isoc_tx() argument
4190 xep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_isoc_tx()
4191 ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; in xhci_queue_isoc_tx()
4195 xhci_dbg(xhci, "Isoc URB with zero packets?\n"); in xhci_queue_isoc_tx()
4220 burst_count = xhci_get_burst_count(xhci, urb, total_pkt_count); in xhci_queue_isoc_tx()
4221 last_burst_pkt_count = xhci_get_last_burst_packet_count(xhci, in xhci_queue_isoc_tx()
4226 ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, in xhci_queue_isoc_tx()
4238 HCC_CFC(xhci->hcc_params)) { in xhci_queue_isoc_tx()
4239 frame_id = xhci_get_isoc_frame_id(xhci, urb, i); in xhci_queue_isoc_tx()
4253 /* xhci 1.1 with ETE uses TD_Size field for TBC, old is Rsvdz */ in xhci_queue_isoc_tx()
4279 if (trb_block_event_intr(xhci, num_tds, i)) in xhci_queue_isoc_tx()
4288 remainder = xhci_td_remainder(xhci, running_total, in xhci_queue_isoc_tx()
4295 /* xhci 1.1 with ETE uses TD Size field for TBC */ in xhci_queue_isoc_tx()
4302 queue_trb(xhci, ep_ring, more_trbs_coming, in xhci_queue_isoc_tx()
4315 xhci_err(xhci, "ISOC TD length unmatch\n"); in xhci_queue_isoc_tx()
4322 if (HCC_CFC(xhci->hcc_params)) in xhci_queue_isoc_tx()
4325 if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) { in xhci_queue_isoc_tx()
4326 if (xhci->quirks & XHCI_AMD_PLL_FIX) in xhci_queue_isoc_tx()
4329 xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs++; in xhci_queue_isoc_tx()
4331 giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, in xhci_queue_isoc_tx()
4347 td_to_noop(xhci, ep_ring, &urb_priv->td[0], true); in xhci_queue_isoc_tx()
4360 * Update interval as xhci_queue_intr_tx does. Use xhci frame_index to
4364 int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_isoc_tx_prepare() argument
4376 xdev = xhci->devs[slot_id]; in xhci_queue_isoc_tx_prepare()
4377 xep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_isoc_tx_prepare()
4379 ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in xhci_queue_isoc_tx_prepare()
4389 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in xhci_queue_isoc_tx_prepare()
4398 check_interval(xhci, urb, ep_ctx); in xhci_queue_isoc_tx_prepare()
4401 if (HCC_CFC(xhci->hcc_params) && !list_empty(&ep_ring->td_list)) { in xhci_queue_isoc_tx_prepare()
4408 start_frame = readl(&xhci->run_regs->microframe_index); in xhci_queue_isoc_tx_prepare()
4414 ist = HCS_IST(xhci->hcs_params2) & 0x7; in xhci_queue_isoc_tx_prepare()
4415 if (HCS_IST(xhci->hcs_params2) & (1 << 3)) in xhci_queue_isoc_tx_prepare()
4435 return xhci_queue_isoc_tx(xhci, mem_flags, urb, slot_id, ep_index); in xhci_queue_isoc_tx_prepare()
4445 * Don't decrement xhci->cmd_ring_reserved_trbs after we've queued the TRB
4448 static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in queue_command() argument
4452 int reserved_trbs = xhci->cmd_ring_reserved_trbs; in queue_command()
4455 if ((xhci->xhc_state & XHCI_STATE_DYING) || in queue_command()
4456 (xhci->xhc_state & XHCI_STATE_HALTED)) { in queue_command()
4457 xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n"); in queue_command()
4464 ret = prepare_ring(xhci, xhci->cmd_ring, EP_STATE_RUNNING, in queue_command()
4467 xhci_err(xhci, "ERR: No room for command on command ring\n"); in queue_command()
4469 xhci_err(xhci, "ERR: Reserved TRB counting for " in queue_command()
4474 cmd->command_trb = xhci->cmd_ring->enqueue; in queue_command()
4477 if (list_empty(&xhci->cmd_list)) { in queue_command()
4478 xhci->current_cmd = cmd; in queue_command()
4479 xhci_mod_cmd_timer(xhci); in queue_command()
4482 list_add_tail(&cmd->cmd_list, &xhci->cmd_list); in queue_command()
4484 queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3, in queue_command()
4485 field4 | xhci->cmd_ring->cycle_state); in queue_command()
4490 int xhci_queue_slot_control(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_slot_control() argument
4493 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_slot_control()
4498 int xhci_queue_address_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_address_device() argument
4501 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_address_device()
4507 int xhci_queue_vendor_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_vendor_command() argument
4510 return queue_command(xhci, cmd, field1, field2, field3, field4, false); in xhci_queue_vendor_command()
4514 int xhci_queue_reset_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_device() argument
4517 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_device()
4523 int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, in xhci_queue_configure_endpoint() argument
4527 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_configure_endpoint()
4534 int xhci_queue_evaluate_context(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_evaluate_context() argument
4537 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_evaluate_context()
4547 int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_stop_endpoint() argument
4555 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_stop_endpoint()
4559 int xhci_queue_reset_ep(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_ep() argument
4570 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_ep()