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,
142 static void next_trb(struct xhci_hcd *xhci, in next_trb() argument
158 void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) in inc_deq() argument
178 xhci_warn(xhci, "Missing link TRB at end of segment\n"); in inc_deq()
188 xhci_warn(xhci, "Ring is an endless link TRB loop\n"); in inc_deq()
209 * xHCI hardware can't handle the chain bit being cleared on a link TRB.
214 static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, in inc_enq() argument
224 xhci_err(xhci, "Tried to move enqueue past ring segment\n"); in inc_enq()
248 (xhci->quirks & XHCI_AMD_0x96_HOST)) && in inc_enq()
249 !xhci_link_trb_quirk(xhci)) { in inc_enq()
266 xhci_warn(xhci, "%s: Ring link TRB loop\n", __func__); in inc_enq()
280 static unsigned int xhci_num_trbs_free(struct xhci_hcd *xhci, struct xhci_ring *ring) in xhci_num_trbs_free() argument
316 static unsigned int xhci_ring_expansion_needed(struct xhci_hcd *xhci, struct xhci_ring *ring, in xhci_ring_expansion_needed() argument
348 xhci_dbg(xhci, "Ring expansion by %d segments needed\n", in xhci_ring_expansion_needed()
350 xhci_dbg(xhci, "Adding %d trbs moves enq %d trbs into deq seg\n", in xhci_ring_expansion_needed()
361 void xhci_ring_cmd_db(struct xhci_hcd *xhci) in xhci_ring_cmd_db() argument
363 if (!(xhci->cmd_ring_state & CMD_RING_STATE_RUNNING)) in xhci_ring_cmd_db()
366 xhci_dbg(xhci, "// Ding dong!\n"); in xhci_ring_cmd_db()
370 writel(DB_VALUE_HOST, &xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
372 readl(&xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
375 static bool xhci_mod_cmd_timer(struct xhci_hcd *xhci) in xhci_mod_cmd_timer() argument
377 return mod_delayed_work(system_wq, &xhci->cmd_timer, in xhci_mod_cmd_timer()
378 msecs_to_jiffies(xhci->current_cmd->timeout_ms)); in xhci_mod_cmd_timer()
381 static struct xhci_command *xhci_next_queued_cmd(struct xhci_hcd *xhci) in xhci_next_queued_cmd() argument
383 return list_first_entry_or_null(&xhci->cmd_list, struct xhci_command, in xhci_next_queued_cmd()
390 * This must be called with command ring stopped and xhci->lock held.
392 static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci, in xhci_handle_stopped_cmd_ring() argument
398 list_for_each_entry(i_cmd, &xhci->cmd_list, cmd_list) { in xhci_handle_stopped_cmd_ring()
405 xhci_dbg(xhci, "Turn aborted command %p to no-op\n", in xhci_handle_stopped_cmd_ring()
416 xhci->cmd_ring_state = CMD_RING_STATE_RUNNING; in xhci_handle_stopped_cmd_ring()
419 if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) && in xhci_handle_stopped_cmd_ring()
420 !(xhci->xhc_state & XHCI_STATE_DYING)) { in xhci_handle_stopped_cmd_ring()
421 xhci->current_cmd = cur_cmd; in xhci_handle_stopped_cmd_ring()
422 xhci_mod_cmd_timer(xhci); in xhci_handle_stopped_cmd_ring()
423 xhci_ring_cmd_db(xhci); in xhci_handle_stopped_cmd_ring()
427 /* Must be called with xhci->lock held, releases and aquires lock back */
428 static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags) in xhci_abort_cmd_ring() argument
430 struct xhci_segment *new_seg = xhci->cmd_ring->deq_seg; in xhci_abort_cmd_ring()
431 union xhci_trb *new_deq = xhci->cmd_ring->dequeue; in xhci_abort_cmd_ring()
435 xhci_dbg(xhci, "Abort command ring\n"); in xhci_abort_cmd_ring()
437 reinit_completion(&xhci->cmd_ring_stop_completion); in xhci_abort_cmd_ring()
447 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
449 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
452 xhci_write_64(xhci, crcr | CMD_RING_ABORT, &xhci->op_regs->cmd_ring); in xhci_abort_cmd_ring()
454 /* Section 4.6.1.2 of xHCI 1.0 spec says software should also time the in xhci_abort_cmd_ring()
460 ret = xhci_handshake_check_state(xhci, &xhci->op_regs->cmd_ring, in xhci_abort_cmd_ring()
464 xhci_err(xhci, "Abort failed to stop command ring: %d\n", ret); in xhci_abort_cmd_ring()
465 xhci_halt(xhci); in xhci_abort_cmd_ring()
466 xhci_hc_died(xhci); in xhci_abort_cmd_ring()
475 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_abort_cmd_ring()
476 ret = wait_for_completion_timeout(&xhci->cmd_ring_stop_completion, in xhci_abort_cmd_ring()
478 spin_lock_irqsave(&xhci->lock, flags); in xhci_abort_cmd_ring()
480 xhci_dbg(xhci, "No stop event for abort, ring start fail?\n"); in xhci_abort_cmd_ring()
481 xhci_cleanup_command_queue(xhci); in xhci_abort_cmd_ring()
483 xhci_handle_stopped_cmd_ring(xhci, xhci_next_queued_cmd(xhci)); in xhci_abort_cmd_ring()
488 void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, in xhci_ring_ep_doorbell() argument
493 __le32 __iomem *db_addr = &xhci->dba->doorbell[slot_id]; in xhci_ring_ep_doorbell()
494 struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_ring_ep_doorbell()
515 static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in ring_doorbell_for_active_rings() argument
522 ep = &xhci->devs[slot_id]->eps[ep_index]; in ring_doorbell_for_active_rings()
527 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0); in ring_doorbell_for_active_rings()
535 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, in ring_doorbell_for_active_rings()
540 void xhci_ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in xhci_ring_doorbell_for_active_rings() argument
544 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_ring_doorbell_for_active_rings()
547 static struct xhci_virt_ep *xhci_get_virt_ep(struct xhci_hcd *xhci, in xhci_get_virt_ep() argument
552 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in xhci_get_virt_ep()
556 xhci_warn(xhci, "Invalid endpoint index %u\n", ep_index); in xhci_get_virt_ep()
559 if (!xhci->devs[slot_id]) { in xhci_get_virt_ep()
560 xhci_warn(xhci, "No xhci virt device for slot_id %u\n", slot_id); in xhci_get_virt_ep()
564 return &xhci->devs[slot_id]->eps[ep_index]; in xhci_get_virt_ep()
567 static struct xhci_ring *xhci_virt_ep_to_ring(struct xhci_hcd *xhci, in xhci_virt_ep_to_ring() argument
579 xhci_warn(xhci, "Invalid stream_id %u request for slot_id %u ep_index %u\n", in xhci_virt_ep_to_ring()
591 struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci, in xhci_triad_to_transfer_ring() argument
597 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_triad_to_transfer_ring()
601 return xhci_virt_ep_to_ring(xhci, ep, stream_id); in xhci_triad_to_transfer_ring()
611 static u64 xhci_get_hw_deq(struct xhci_hcd *xhci, struct xhci_virt_device *vdev, in xhci_get_hw_deq() argument
624 ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); in xhci_get_hw_deq()
628 static int xhci_move_dequeue_past_td(struct xhci_hcd *xhci, in xhci_move_dequeue_past_td() argument
632 struct xhci_virt_device *dev = xhci->devs[slot_id]; in xhci_move_dequeue_past_td()
646 ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, in xhci_move_dequeue_past_td()
649 xhci_warn(xhci, "WARN can't find new dequeue, invalid stream ID %u\n", in xhci_move_dequeue_past_td()
665 xhci_dbg(xhci, "ep ring empty, Set new dequeue = enqueue"); in xhci_move_dequeue_past_td()
668 xhci_warn(xhci, "Can't find new dequeue state, missing td\n"); in xhci_move_dequeue_past_td()
673 hw_dequeue = xhci_get_hw_deq(xhci, dev, ep_index, stream_id); in xhci_move_dequeue_past_td()
698 next_trb(xhci, ep_ring, &new_seg, &new_deq); in xhci_move_dequeue_past_td()
702 xhci_err(xhci, "Error: Failed finding new dequeue state\n"); in xhci_move_dequeue_past_td()
713 xhci_warn(xhci, "Can't find dma of new dequeue ptr\n"); in xhci_move_dequeue_past_td()
714 xhci_warn(xhci, "deq seg = %p, deq ptr = %p\n", new_seg, new_deq); in xhci_move_dequeue_past_td()
719 xhci_warn(xhci, "Set TR Deq already pending, don't submit for 0x%pad\n", in xhci_move_dequeue_past_td()
725 cmd = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_move_dequeue_past_td()
727 xhci_warn(xhci, "Can't alloc Set TR Deq cmd 0x%pad\n", &addr); in xhci_move_dequeue_past_td()
733 ret = queue_command(xhci, cmd, in xhci_move_dequeue_past_td()
739 xhci_free_command(xhci, cmd); in xhci_move_dequeue_past_td()
745 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_move_dequeue_past_td()
754 xhci_ring_cmd_db(xhci); in xhci_move_dequeue_past_td()
762 static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in td_to_noop() argument
778 next_trb(xhci, ep_ring, &seg, &trb); in td_to_noop()
783 * Must be called with xhci->lock held in interrupt context,
784 * releases and re-acquires xhci->lock
786 static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci, in xhci_giveback_urb_in_irq() argument
794 xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--; in xhci_giveback_urb_in_irq()
795 if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) { in xhci_giveback_urb_in_irq()
796 if (xhci->quirks & XHCI_AMD_PLL_FIX) in xhci_giveback_urb_in_irq()
806 static void xhci_unmap_td_bounce_buffer(struct xhci_hcd *xhci, in xhci_unmap_td_bounce_buffer() argument
809 struct device *dev = xhci_to_hcd(xhci)->self.sysdev; in xhci_unmap_td_bounce_buffer()
830 xhci_warn(xhci, "WARN Wrong bounce buffer read length: %zu != %d\n", in xhci_unmap_td_bounce_buffer()
840 static int xhci_td_cleanup(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_td_cleanup() argument
849 xhci_unmap_td_bounce_buffer(xhci, ep_ring, td); in xhci_td_cleanup()
857 xhci_warn(xhci, "URB req %u and actual %u transfer length mismatch\n", in xhci_td_cleanup()
875 xhci_dbg(xhci, "Giveback URB %p, len = %d, expected = %d, status = %d\n", in xhci_td_cleanup()
882 xhci_giveback_urb_in_irq(xhci, td, status); in xhci_td_cleanup()
898 ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_giveback_invalidated_tds()
901 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_giveback_invalidated_tds()
903 xhci_td_cleanup(ep->xhci, td, ring, td->status); in xhci_giveback_invalidated_tds()
905 xhci_dbg(ep->xhci, "%s: Keep cancelled URB %p TD as cancel_status is %d\n", in xhci_giveback_invalidated_tds()
908 if (ep->xhci->xhc_state & XHCI_STATE_DYING) in xhci_giveback_invalidated_tds()
913 static int xhci_reset_halted_ep(struct xhci_hcd *xhci, unsigned int slot_id, in xhci_reset_halted_ep() argument
919 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_reset_halted_ep()
925 xhci_dbg(xhci, "%s-reset ep %u, slot %u\n", in xhci_reset_halted_ep()
929 ret = xhci_queue_reset_ep(xhci, command, slot_id, ep_index, reset_type); in xhci_reset_halted_ep()
932 xhci_err(xhci, "ERROR queuing reset endpoint for slot %d ep_index %d, %d\n", in xhci_reset_halted_ep()
937 static int xhci_handle_halted_endpoint(struct xhci_hcd *xhci, in xhci_handle_halted_endpoint() argument
962 xhci_dbg(xhci, "Reset ep command for ep_index %d already pending\n", in xhci_handle_halted_endpoint()
967 err = xhci_reset_halted_ep(xhci, slot_id, ep->ep_index, reset_type); in xhci_handle_halted_endpoint()
973 xhci_ring_cmd_db(xhci); in xhci_handle_halted_endpoint()
980 * We have the xHCI lock, so nothing can modify this list until we drop it.
989 struct xhci_hcd *xhci; in xhci_invalidate_cancelled_tds() local
998 xhci = ep->xhci; in xhci_invalidate_cancelled_tds()
1001 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_invalidate_cancelled_tds()
1007 ring = xhci_urb_to_transfer_ring(xhci, td->urb); in xhci_invalidate_cancelled_tds()
1009 xhci_warn(xhci, "WARN Cancelled URB %p has invalid stream ID %u.\n", in xhci_invalidate_cancelled_tds()
1019 hw_deq = xhci_get_hw_deq(xhci, ep->vdev, ep->ep_index, in xhci_invalidate_cancelled_tds()
1024 trb_in_td(xhci, td->start_seg, td->first_trb, td->last_trb, hw_deq, false)) { in xhci_invalidate_cancelled_tds()
1034 xhci_dbg(xhci, in xhci_invalidate_cancelled_tds()
1042 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1051 err = xhci_move_dequeue_past_td(xhci, slot_id, ep->ep_index, in xhci_invalidate_cancelled_tds()
1059 xhci_dbg(xhci, "Failed to clear cancelled cached URB %p, mark clear anyway\n", in xhci_invalidate_cancelled_tds()
1061 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1078 hw_deq = xhci_get_hw_deq(ep->xhci, ep->vdev, ep->ep_index, 0); in find_halted_td()
1081 if (trb_in_td(ep->xhci, td->start_seg, td->first_trb, in find_halted_td()
1098 static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_stop_ep() argument
1110 if (!xhci->devs[slot_id]) in xhci_handle_cmd_stop_ep()
1111 xhci_warn(xhci, "Stop endpoint command completion for disabled slot %u\n", in xhci_handle_cmd_stop_ep()
1117 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
1121 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_stop_ep()
1142 xhci_dbg(xhci, "Stop ep completion raced with stall, reset ep\n"); in xhci_handle_cmd_stop_ep()
1152 err = xhci_handle_halted_endpoint(xhci, ep, td, reset_type); in xhci_handle_cmd_stop_ep()
1159 xhci_dbg(xhci, "Stop ep completion ctx error, ep is running\n"); in xhci_handle_cmd_stop_ep()
1161 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_handle_cmd_stop_ep()
1166 xhci_queue_stop_endpoint(xhci, command, slot_id, ep_index, 0); in xhci_handle_cmd_stop_ep()
1167 xhci_ring_cmd_db(xhci); in xhci_handle_cmd_stop_ep()
1181 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
1184 static void xhci_kill_ring_urbs(struct xhci_hcd *xhci, struct xhci_ring *ring) in xhci_kill_ring_urbs() argument
1195 xhci_unmap_td_bounce_buffer(xhci, ring, cur_td); in xhci_kill_ring_urbs()
1199 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_ring_urbs()
1203 static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci, in xhci_kill_endpoint_urbs() argument
1211 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_kill_endpoint_urbs()
1225 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1228 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1234 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1237 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1246 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_endpoint_urbs()
1256 * Call with xhci->lock held.
1259 void xhci_hc_died(struct xhci_hcd *xhci) in xhci_hc_died() argument
1263 if (xhci->xhc_state & XHCI_STATE_DYING) in xhci_hc_died()
1266 xhci_err(xhci, "xHCI host controller not responding, assume dead\n"); in xhci_hc_died()
1267 xhci->xhc_state |= XHCI_STATE_DYING; in xhci_hc_died()
1269 xhci_cleanup_command_queue(xhci); in xhci_hc_died()
1272 for (i = 0; i <= HCS_MAX_SLOTS(xhci->hcs_params1); i++) { in xhci_hc_died()
1273 if (!xhci->devs[i]) in xhci_hc_died()
1276 xhci_kill_endpoint_urbs(xhci, i, j); in xhci_hc_died()
1280 if (!(xhci->xhc_state & XHCI_STATE_REMOVING)) in xhci_hc_died()
1281 usb_hc_died(xhci_to_hcd(xhci)); in xhci_hc_died()
1284 static void update_ring_for_set_deq_completion(struct xhci_hcd *xhci, in update_ring_for_set_deq_completion() argument
1315 xhci_dbg(xhci, "Unable to find new dequeue pointer\n"); in update_ring_for_set_deq_completion()
1328 static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_set_deq() argument
1341 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1345 ep_ring = xhci_virt_ep_to_ring(xhci, ep, stream_id); in xhci_handle_cmd_set_deq()
1347 xhci_warn(xhci, "WARN Set TR deq ptr command for freed stream ID %u\n", in xhci_handle_cmd_set_deq()
1353 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_set_deq()
1354 slot_ctx = xhci_get_slot_ctx(xhci, ep->vdev->out_ctx); in xhci_handle_cmd_set_deq()
1364 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd invalid because of stream ID configuration\n"); in xhci_handle_cmd_set_deq()
1367 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.\n"); in xhci_handle_cmd_set_deq()
1371 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1376 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed because slot %u was not enabled.\n", in xhci_handle_cmd_set_deq()
1380 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd with unknown completion code of %u.\n", in xhci_handle_cmd_set_deq()
1400 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1407 update_ring_for_set_deq_completion(xhci, ep->vdev, in xhci_handle_cmd_set_deq()
1410 xhci_warn(xhci, "Mismatch between completed Set TR Deq Ptr command & xHCI internal state.\n"); in xhci_handle_cmd_set_deq()
1411 xhci_warn(xhci, "ep deq seg = %p, deq ptr = %p\n", in xhci_handle_cmd_set_deq()
1418 ep_ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_handle_cmd_set_deq()
1421 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_handle_cmd_set_deq()
1423 xhci_td_cleanup(ep->xhci, td, ep_ring, td->status); in xhci_handle_cmd_set_deq()
1425 xhci_dbg(ep->xhci, "%s: Keep cancelled URB %p TD as cancel_status is %d\n", in xhci_handle_cmd_set_deq()
1434 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1437 static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_reset_ep() argument
1445 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1449 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in xhci_handle_cmd_reset_ep()
1455 xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, in xhci_handle_cmd_reset_ep()
1468 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1471 static void xhci_handle_cmd_enable_slot(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_enable_slot() argument
1480 static void xhci_handle_cmd_disable_slot(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_disable_slot() argument
1485 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_disable_slot()
1489 slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); in xhci_handle_cmd_disable_slot()
1492 if (xhci->quirks & XHCI_EP_LIMIT_QUIRK) in xhci_handle_cmd_disable_slot()
1494 xhci_free_device_endpoint_resources(xhci, virt_dev, true); in xhci_handle_cmd_disable_slot()
1497 static void xhci_handle_cmd_config_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_config_ep() argument
1511 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_config_ep()
1516 xhci_warn(xhci, "Could not get input context, bad type.\n"); in xhci_handle_cmd_config_ep()
1525 ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->out_ctx, ep_index); in xhci_handle_cmd_config_ep()
1531 static void xhci_handle_cmd_addr_dev(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_addr_dev() argument
1536 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_addr_dev()
1539 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_addr_dev()
1543 static void xhci_handle_cmd_reset_dev(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_reset_dev() argument
1548 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_reset_dev()
1550 xhci_warn(xhci, "Reset device command completion for disabled slot %u\n", in xhci_handle_cmd_reset_dev()
1554 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_reset_dev()
1557 xhci_dbg(xhci, "Completed reset device command.\n"); in xhci_handle_cmd_reset_dev()
1560 static void xhci_handle_cmd_nec_get_fw(struct xhci_hcd *xhci, in xhci_handle_cmd_nec_get_fw() argument
1563 if (!(xhci->quirks & XHCI_NEC_HOST)) { in xhci_handle_cmd_nec_get_fw()
1564 xhci_warn(xhci, "WARN NEC_GET_FW command on non-NEC host\n"); in xhci_handle_cmd_nec_get_fw()
1567 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, in xhci_handle_cmd_nec_get_fw()
1585 void xhci_cleanup_command_queue(struct xhci_hcd *xhci) in xhci_cleanup_command_queue() argument
1588 xhci->current_cmd = NULL; in xhci_cleanup_command_queue()
1589 list_for_each_entry_safe(cur_cmd, tmp_cmd, &xhci->cmd_list, cmd_list) in xhci_cleanup_command_queue()
1595 struct xhci_hcd *xhci; in xhci_handle_command_timeout() local
1602 xhci = container_of(to_delayed_work(work), struct xhci_hcd, cmd_timer); in xhci_handle_command_timeout()
1604 spin_lock_irqsave(&xhci->lock, flags); in xhci_handle_command_timeout()
1610 if (!xhci->current_cmd || delayed_work_pending(&xhci->cmd_timer)) { in xhci_handle_command_timeout()
1611 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1615 cmd_field3 = le32_to_cpu(xhci->current_cmd->command_trb->generic.field[3]); in xhci_handle_command_timeout()
1616 usbsts = readl(&xhci->op_regs->status); in xhci_handle_command_timeout()
1617 xhci_dbg(xhci, "Command timeout, USBSTS:%s\n", xhci_decode_usbsts(str, usbsts)); in xhci_handle_command_timeout()
1619 /* Bail out and tear down xhci if a stop endpoint command failed */ in xhci_handle_command_timeout()
1623 xhci_warn(xhci, "xHCI host not responding to stop endpoint command\n"); in xhci_handle_command_timeout()
1625 ep = xhci_get_virt_ep(xhci, TRB_TO_SLOT_ID(cmd_field3), in xhci_handle_command_timeout()
1630 xhci_halt(xhci); in xhci_handle_command_timeout()
1631 xhci_hc_died(xhci); in xhci_handle_command_timeout()
1636 xhci->current_cmd->status = COMP_COMMAND_ABORTED; in xhci_handle_command_timeout()
1639 hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); in xhci_handle_command_timeout()
1641 xhci_hc_died(xhci); in xhci_handle_command_timeout()
1645 if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && in xhci_handle_command_timeout()
1648 xhci->cmd_ring_state = CMD_RING_STATE_ABORTED; in xhci_handle_command_timeout()
1649 xhci_dbg(xhci, "Command timeout\n"); in xhci_handle_command_timeout()
1650 xhci_abort_cmd_ring(xhci, flags); in xhci_handle_command_timeout()
1655 if (xhci->xhc_state & XHCI_STATE_REMOVING) { in xhci_handle_command_timeout()
1656 xhci_dbg(xhci, "host removed, ring start fail?\n"); in xhci_handle_command_timeout()
1657 xhci_cleanup_command_queue(xhci); in xhci_handle_command_timeout()
1663 xhci_dbg(xhci, "Command timeout on stopped ring\n"); in xhci_handle_command_timeout()
1664 xhci_handle_stopped_cmd_ring(xhci, xhci->current_cmd); in xhci_handle_command_timeout()
1667 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1671 static void handle_cmd_completion(struct xhci_hcd *xhci, in handle_cmd_completion() argument
1683 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in handle_cmd_completion()
1688 cmd_trb = xhci->cmd_ring->dequeue; in handle_cmd_completion()
1690 trace_xhci_handle_command(xhci->cmd_ring, &cmd_trb->generic); in handle_cmd_completion()
1692 cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg, in handle_cmd_completion()
1699 xhci_warn(xhci, in handle_cmd_completion()
1704 cmd = list_first_entry(&xhci->cmd_list, struct xhci_command, cmd_list); in handle_cmd_completion()
1706 cancel_delayed_work(&xhci->cmd_timer); in handle_cmd_completion()
1712 complete_all(&xhci->cmd_ring_stop_completion); in handle_cmd_completion()
1716 if (cmd->command_trb != xhci->cmd_ring->dequeue) { in handle_cmd_completion()
1717 xhci_err(xhci, in handle_cmd_completion()
1729 xhci->cmd_ring_state = CMD_RING_STATE_STOPPED; in handle_cmd_completion()
1731 if (xhci->current_cmd == cmd) in handle_cmd_completion()
1732 xhci->current_cmd = NULL; in handle_cmd_completion()
1740 xhci_handle_cmd_enable_slot(xhci, slot_id, cmd, cmd_comp_code); in handle_cmd_completion()
1743 xhci_handle_cmd_disable_slot(xhci, slot_id); in handle_cmd_completion()
1747 xhci_handle_cmd_config_ep(xhci, slot_id, cmd_comp_code); in handle_cmd_completion()
1752 xhci_handle_cmd_addr_dev(xhci, slot_id); in handle_cmd_completion()
1758 xhci_handle_cmd_stop_ep(xhci, slot_id, cmd_trb, in handle_cmd_completion()
1764 xhci_handle_cmd_set_deq(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1774 xhci_handle_cmd_reset_ep(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1778 * Use the SLOT_ID from the command TRB instead (xhci 4.6.11) in handle_cmd_completion()
1782 xhci_handle_cmd_reset_dev(xhci, slot_id); in handle_cmd_completion()
1785 xhci_handle_cmd_nec_get_fw(xhci, event); in handle_cmd_completion()
1789 xhci_info(xhci, "INFO unknown command type %d\n", cmd_type); in handle_cmd_completion()
1794 if (!list_is_singular(&xhci->cmd_list)) { in handle_cmd_completion()
1795 xhci->current_cmd = list_first_entry(&cmd->cmd_list, in handle_cmd_completion()
1797 xhci_mod_cmd_timer(xhci); in handle_cmd_completion()
1798 } else if (xhci->current_cmd == cmd) { in handle_cmd_completion()
1799 xhci->current_cmd = NULL; in handle_cmd_completion()
1805 inc_deq(xhci, xhci->cmd_ring); in handle_cmd_completion()
1808 static void handle_vendor_event(struct xhci_hcd *xhci, in handle_vendor_event() argument
1811 xhci_dbg(xhci, "Vendor specific event TRB type = %u\n", trb_type); in handle_vendor_event()
1812 if (trb_type == TRB_NEC_CMD_COMP && (xhci->quirks & XHCI_NEC_HOST)) in handle_vendor_event()
1813 handle_cmd_completion(xhci, &event->event_cmd); in handle_vendor_event()
1816 static void handle_device_notification(struct xhci_hcd *xhci, in handle_device_notification() argument
1823 if (!xhci->devs[slot_id]) { in handle_device_notification()
1824 xhci_warn(xhci, "Device Notification event for " in handle_device_notification()
1829 xhci_dbg(xhci, "Device Wake Notification event for slot ID %u\n", in handle_device_notification()
1831 udev = xhci->devs[slot_id]->udev; in handle_device_notification()
1837 * Quirk hanlder for errata seen on Cavium ThunderX2 processor XHCI
1848 static void xhci_cavium_reset_phy_quirk(struct xhci_hcd *xhci) in xhci_cavium_reset_phy_quirk() argument
1850 struct usb_hcd *hcd = xhci_to_hcd(xhci); in xhci_cavium_reset_phy_quirk()
1865 static void handle_port_status(struct xhci_hcd *xhci, in handle_port_status() argument
1881 xhci_warn(xhci, in handle_port_status()
1885 max_ports = HCS_MAX_PORTS(xhci->hcs_params1); in handle_port_status()
1888 xhci_warn(xhci, "Port change event with invalid port ID %d\n", in handle_port_status()
1893 port = &xhci->hw_ports[port_id - 1]; in handle_port_status()
1895 xhci_warn(xhci, "Port change event, no port for port ID %u\n", in handle_port_status()
1902 if (port->rhub == &xhci->usb3_rhub && xhci->shared_hcd == NULL) { in handle_port_status()
1903 xhci_dbg(xhci, "ignore port event for removed USB3 hcd\n"); in handle_port_status()
1913 xhci_dbg(xhci, "Port change event, %d-%d, id %d, portsc: 0x%x\n", in handle_port_status()
1919 xhci_dbg(xhci, "resume root hub\n"); in handle_port_status()
1925 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
1926 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
1927 xhci->devs[slot_id]->flags |= VDEV_PORT_ERROR; in handle_port_status()
1931 xhci_dbg(xhci, "port resume event for port %d\n", port_id); in handle_port_status()
1933 cmd_reg = readl(&xhci->op_regs->command); in handle_port_status()
1935 xhci_warn(xhci, "xHC is not running.\n"); in handle_port_status()
1940 xhci_dbg(xhci, "remote wake SS port %d\n", port_id); in handle_port_status()
1946 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1948 xhci_set_link_state(xhci, port, XDEV_U0); in handle_port_status()
1955 xhci_dbg(xhci, "resume HS port %d\n", port_id); in handle_port_status()
1976 xhci_dbg(xhci, "resume SS port %d finished\n", port_id); in handle_port_status()
1985 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
1986 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
1987 xhci_ring_device(xhci, slot_id); in handle_port_status()
1989 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1998 * Check to see if xhci-hub.c is waiting on RExit to U0 transition (or in handle_port_status()
2010 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
2011 if ((xhci->quirks & XHCI_RESET_PLL_ON_DISCONNECT) && in handle_port_status()
2013 xhci_cavium_reset_phy_quirk(xhci); in handle_port_status()
2026 * xHCI port-status-change events occur when the "or" of all the in handle_port_status()
2032 xhci_dbg(xhci, "%s: starting usb%d port polling.\n", in handle_port_status()
2035 spin_unlock(&xhci->lock); in handle_port_status()
2038 spin_lock(&xhci->lock); in handle_port_status()
2047 struct xhci_segment *trb_in_td(struct xhci_hcd *xhci, in trb_in_td() argument
2072 xhci_warn(xhci, in trb_in_td()
2108 static void xhci_clear_hub_tt_buffer(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_clear_hub_tt_buffer() argument
2116 (td->urb->dev->tt->hub != xhci_to_hcd(xhci)->self.root_hub) && in xhci_clear_hub_tt_buffer()
2131 static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci, in xhci_requires_manual_halt_cleanup() argument
2151 int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code) in xhci_is_vendor_info_code() argument
2157 xhci_dbg(xhci, "Vendor defined info completion code %u\n", in xhci_is_vendor_info_code()
2159 xhci_dbg(xhci, "Treating code as success.\n"); in xhci_is_vendor_info_code()
2165 static int finish_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in finish_td() argument
2171 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in finish_td()
2205 xhci_dbg(xhci, "Already resolving halted ep for 0x%llx\n", in finish_td()
2214 xhci_clear_hub_tt_buffer(xhci, td, ep); in finish_td()
2215 xhci_handle_halted_endpoint(xhci, ep, td, EP_HARD_RESET); in finish_td()
2219 * xhci internal endpoint state will go to a "halt" state for in finish_td()
2229 xhci_clear_hub_tt_buffer(xhci, td, ep); in finish_td()
2231 xhci_handle_halted_endpoint(xhci, ep, td, EP_HARD_RESET); in finish_td()
2241 inc_deq(xhci, ep_ring); in finish_td()
2243 return xhci_td_cleanup(xhci, td, ep_ring, td->status); in finish_td()
2247 static int sum_trb_lengths(struct xhci_hcd *xhci, struct xhci_ring *ring, in sum_trb_lengths() argument
2254 for (sum = 0; trb != stop_trb; next_trb(xhci, ring, &seg, &trb)) { in sum_trb_lengths()
2264 static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_ctrl_td() argument
2274 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in process_ctrl_td()
2282 xhci_warn(xhci, "WARN: Success on ctrl %s TRB without IOC set?\n", in process_ctrl_td()
2296 xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n"); in process_ctrl_td()
2311 xhci_warn(xhci, "WARN: unexpected TRB Type %d\n", in process_ctrl_td()
2318 if (!xhci_requires_manual_halt_cleanup(xhci, in process_ctrl_td()
2321 xhci_dbg(xhci, "TRB error %u, halted endpoint index = %u\n", in process_ctrl_td()
2345 xhci_dbg(xhci, "Waiting for status stage event\n"); in process_ctrl_td()
2354 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_ctrl_td()
2360 static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_isoc_td() argument
2385 /* Don't overwrite status if TD had an error, see xHCI 4.9.1 */ in process_isoc_td()
2390 if (xhci->quirks & XHCI_TRUST_TX_LENGTH) in process_isoc_td()
2443 frame->actual_length = sum_trb_lengths(xhci, ep->ring, ep_trb) + in process_isoc_td()
2453 xhci_dbg(xhci, "Error mid isoc TD, wait for final completion event\n"); in process_isoc_td()
2458 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_isoc_td()
2461 static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, in skip_isoc_td() argument
2481 inc_deq(xhci, ep->ring); in skip_isoc_td()
2483 return xhci_td_cleanup(xhci, td, ep->ring, status); in skip_isoc_td()
2489 static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_bulk_intr_td() argument
2497 slot_ctx = xhci_get_slot_ctx(xhci, ep->vdev->out_ctx); in process_bulk_intr_td()
2508 xhci_warn(xhci, "WARN Successful completion on short TX\n"); in process_bulk_intr_td()
2509 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2516 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2530 if (xhci->quirks & XHCI_NO_SOFT_RETRY || in process_bulk_intr_td()
2537 xhci_handle_halted_endpoint(xhci, ep, td, EP_SOFT_RESET); in process_bulk_intr_td()
2548 sum_trb_lengths(xhci, ep_ring, ep_trb) + in process_bulk_intr_td()
2552 xhci_warn(xhci, "bad transfer trb length %d in event trb\n", in process_bulk_intr_td()
2557 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_bulk_intr_td()
2565 static int handle_tx_event(struct xhci_hcd *xhci, in handle_tx_event() argument
2588 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in handle_tx_event()
2590 xhci_err(xhci, "ERROR Invalid Transfer event\n"); in handle_tx_event()
2595 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep_index); in handle_tx_event()
2598 xhci_err(xhci, in handle_tx_event()
2604 /* Some transfer events don't always point to a trb, see xhci 4.17.4 */ in handle_tx_event()
2611 xhci_dbg(xhci, "Stream transaction error ep %u no id\n", in handle_tx_event()
2614 xhci_handle_halted_endpoint(xhci, ep, NULL, in handle_tx_event()
2617 xhci_handle_halted_endpoint(xhci, ep, NULL, in handle_tx_event()
2625 xhci_err(xhci, "ERROR Transfer event for unknown stream ring slot %u ep %u\n", in handle_tx_event()
2643 if (xhci->quirks & XHCI_TRUST_TX_LENGTH || in handle_tx_event()
2647 xhci_warn_ratelimited(xhci, in handle_tx_event()
2655 xhci_dbg(xhci, "Stopped on Transfer TRB for slot %u ep %u\n", in handle_tx_event()
2659 xhci_dbg(xhci, in handle_tx_event()
2664 xhci_dbg(xhci, in handle_tx_event()
2670 xhci_dbg(xhci, "Stalled endpoint for slot %u ep %u\n", slot_id, in handle_tx_event()
2675 xhci_dbg(xhci, "Split transaction error for slot %u ep %u\n", in handle_tx_event()
2680 xhci_dbg(xhci, "Transfer error for slot %u ep %u on endpoint\n", in handle_tx_event()
2685 xhci_dbg(xhci, "Babble error for slot %u ep %u on endpoint\n", in handle_tx_event()
2691 xhci_warn(xhci, in handle_tx_event()
2698 xhci_warn(xhci, in handle_tx_event()
2704 xhci_warn(xhci, in handle_tx_event()
2709 xhci_warn(xhci, in handle_tx_event()
2719 xhci_dbg(xhci, "underrun event on endpoint\n"); in handle_tx_event()
2721 xhci_dbg(xhci, "Underrun Event for slot %d ep %d " in handle_tx_event()
2727 xhci_dbg(xhci, "overrun event on endpoint\n"); in handle_tx_event()
2729 xhci_dbg(xhci, "Overrun Event for slot %d ep %d " in handle_tx_event()
2742 xhci_dbg(xhci, in handle_tx_event()
2748 xhci_dbg(xhci, in handle_tx_event()
2755 xhci_warn(xhci, in handle_tx_event()
2761 if (xhci_is_vendor_info_code(xhci, trb_comp_code)) { in handle_tx_event()
2765 xhci_warn(xhci, in handle_tx_event()
2787 xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n", in handle_tx_event()
2793 xhci_dbg(xhci, "td_list is empty while skip flag set. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2797 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
2799 xhci_handle_halted_endpoint(xhci, ep, NULL, in handle_tx_event()
2808 xhci_dbg(xhci, "All tds on the ep_ring skipped. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2819 ep_seg = trb_in_td(xhci, ep_ring->deq_seg, ep_ring->dequeue, in handle_tx_event()
2838 skip_isoc_td(xhci, td, ep, status); in handle_tx_event()
2846 if ((xhci->quirks & XHCI_SPURIOUS_SUCCESS) && in handle_tx_event()
2853 * xhci 4.10.2 states isoc endpoints should continue in handle_tx_event()
2857 * xhci 4.9.1 states that if there are errors in mult-TRB in handle_tx_event()
2867 ep_seg = trb_in_td(xhci, td_next->start_seg, td_next->first_trb, in handle_tx_event()
2871 xhci_dbg(xhci, "Missing TD completion event after mid TD error\n"); in handle_tx_event()
2874 inc_deq(xhci, ep_ring); in handle_tx_event()
2875 xhci_td_cleanup(xhci, td, ep_ring, td->status); in handle_tx_event()
2882 xhci_err(xhci, in handle_tx_event()
2887 trb_in_td(xhci, ep_ring->deq_seg, in handle_tx_event()
2899 xhci_dbg(xhci, in handle_tx_event()
2921 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
2923 xhci_handle_halted_endpoint(xhci, ep, td, in handle_tx_event()
2932 process_ctrl_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2934 process_isoc_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2936 process_bulk_intr_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2953 xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", in handle_tx_event()
2966 * xhci->lock between event processing (e.g. to pass up port status changes).
2970 static int xhci_handle_event(struct xhci_hcd *xhci, struct xhci_interrupter *ir) in xhci_handle_event() argument
2977 xhci_err(xhci, "ERROR interrupter not ready\n"); in xhci_handle_event()
2999 handle_cmd_completion(xhci, &event->event_cmd); in xhci_handle_event()
3002 handle_port_status(xhci, ir, event); in xhci_handle_event()
3005 handle_tx_event(xhci, ir, &event->trans_event); in xhci_handle_event()
3008 handle_device_notification(xhci, event); in xhci_handle_event()
3012 handle_vendor_event(xhci, event, trb_type); in xhci_handle_event()
3014 xhci_warn(xhci, "ERROR unknown event type %d\n", trb_type); in xhci_handle_event()
3019 if (xhci->xhc_state & XHCI_STATE_DYING) { in xhci_handle_event()
3020 xhci_dbg(xhci, "xHCI host dying, returning from " in xhci_handle_event()
3026 inc_deq(xhci, ir->event_ring); in xhci_handle_event()
3039 static void xhci_update_erst_dequeue(struct xhci_hcd *xhci, in xhci_update_erst_dequeue() argument
3047 temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
3053 xhci_warn(xhci, "WARN something wrong with SW event ring dequeue ptr\n"); in xhci_update_erst_dequeue()
3069 xhci_write_64(xhci, temp_64, &ir->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
3073 * xHCI spec says we can get an interrupt, and if the HC has an error condition,
3079 struct xhci_hcd *xhci = hcd_to_xhci(hcd); in xhci_irq() local
3087 spin_lock(&xhci->lock); in xhci_irq()
3089 status = readl(&xhci->op_regs->status); in xhci_irq()
3091 xhci_hc_died(xhci); in xhci_irq()
3100 xhci_warn(xhci, "WARNING: Host Controller Error\n"); in xhci_irq()
3105 xhci_warn(xhci, "WARNING: Host System Error\n"); in xhci_irq()
3106 xhci_halt(xhci); in xhci_irq()
3117 writel(status, &xhci->op_regs->status); in xhci_irq()
3120 ir = xhci->interrupters[0]; in xhci_irq()
3128 if (xhci->xhc_state & XHCI_STATE_DYING || in xhci_irq()
3129 xhci->xhc_state & XHCI_STATE_HALTED) { in xhci_irq()
3130 xhci_dbg(xhci, "xHCI dying, ignoring interrupt. " in xhci_irq()
3135 temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); in xhci_irq()
3136 xhci_write_64(xhci, temp_64 | ERST_EHB, in xhci_irq()
3146 while (xhci_handle_event(xhci, ir) > 0) { in xhci_irq()
3149 xhci_update_erst_dequeue(xhci, ir, event_ring_deq, false); in xhci_irq()
3153 if (xhci->isoc_bei_interval > AVOID_BEI_INTERVAL_MIN) in xhci_irq()
3154 xhci->isoc_bei_interval = xhci->isoc_bei_interval / 2; in xhci_irq()
3159 xhci_update_erst_dequeue(xhci, ir, event_ring_deq, true); in xhci_irq()
3163 spin_unlock(&xhci->lock); in xhci_irq()
3183 static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, in queue_trb() argument
3199 inc_enq(xhci, ring, more_trbs_coming); in queue_trb()
3206 static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in prepare_ring() argument
3219 xhci_warn(xhci, "WARN urb submitted to disabled ep\n"); in prepare_ring()
3222 xhci_warn(xhci, "WARN waiting for error on ep to be cleared\n"); in prepare_ring()
3227 xhci_dbg(xhci, "WARN halted endpoint, queueing URB anyway.\n"); in prepare_ring()
3233 xhci_err(xhci, "ERROR unknown endpoint state for ep\n"); in prepare_ring()
3241 if (ep_ring != xhci->cmd_ring) { in prepare_ring()
3242 new_segs = xhci_ring_expansion_needed(xhci, ep_ring, num_trbs); in prepare_ring()
3243 } else if (xhci_num_trbs_free(xhci, ep_ring) <= num_trbs) { in prepare_ring()
3244 xhci_err(xhci, "Do not support expand command ring\n"); in prepare_ring()
3249 xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, in prepare_ring()
3251 if (xhci_ring_expansion(xhci, ep_ring, new_segs, mem_flags)) { 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.sysdev; 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()
4034 return !!(i % xhci->isoc_bei_interval); 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()
4228 * Update interval as xhci_queue_intr_tx does. Use xhci frame_index to
4232 int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_isoc_tx_prepare() argument
4244 xdev = xhci->devs[slot_id]; in xhci_queue_isoc_tx_prepare()
4245 xep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_isoc_tx_prepare()
4247 ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in xhci_queue_isoc_tx_prepare()
4257 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in xhci_queue_isoc_tx_prepare()
4266 check_interval(xhci, urb, ep_ctx); in xhci_queue_isoc_tx_prepare()
4269 if (HCC_CFC(xhci->hcc_params) && !list_empty(&ep_ring->td_list)) { in xhci_queue_isoc_tx_prepare()
4276 start_frame = readl(&xhci->run_regs->microframe_index); in xhci_queue_isoc_tx_prepare()
4282 ist = HCS_IST(xhci->hcs_params2) & 0x7; in xhci_queue_isoc_tx_prepare()
4283 if (HCS_IST(xhci->hcs_params2) & (1 << 3)) in xhci_queue_isoc_tx_prepare()
4303 return xhci_queue_isoc_tx(xhci, mem_flags, urb, slot_id, ep_index); in xhci_queue_isoc_tx_prepare()
4313 * Don't decrement xhci->cmd_ring_reserved_trbs after we've queued the TRB
4316 static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in queue_command() argument
4320 int reserved_trbs = xhci->cmd_ring_reserved_trbs; in queue_command()
4323 if ((xhci->xhc_state & XHCI_STATE_DYING) || in queue_command()
4324 (xhci->xhc_state & XHCI_STATE_HALTED)) { in queue_command()
4325 xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n"); in queue_command()
4332 ret = prepare_ring(xhci, xhci->cmd_ring, EP_STATE_RUNNING, in queue_command()
4335 xhci_err(xhci, "ERR: No room for command on command ring\n"); in queue_command()
4337 xhci_err(xhci, "ERR: Reserved TRB counting for " in queue_command()
4342 cmd->command_trb = xhci->cmd_ring->enqueue; in queue_command()
4345 if (list_empty(&xhci->cmd_list)) { in queue_command()
4346 xhci->current_cmd = cmd; in queue_command()
4347 xhci_mod_cmd_timer(xhci); in queue_command()
4350 list_add_tail(&cmd->cmd_list, &xhci->cmd_list); in queue_command()
4352 queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3, in queue_command()
4353 field4 | xhci->cmd_ring->cycle_state); in queue_command()
4358 int xhci_queue_slot_control(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_slot_control() argument
4361 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_slot_control()
4366 int xhci_queue_address_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_address_device() argument
4369 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_address_device()
4375 int xhci_queue_vendor_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_vendor_command() argument
4378 return queue_command(xhci, cmd, field1, field2, field3, field4, false); in xhci_queue_vendor_command()
4382 int xhci_queue_reset_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_device() argument
4385 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_device()
4391 int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, in xhci_queue_configure_endpoint() argument
4395 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_configure_endpoint()
4402 int xhci_queue_evaluate_context(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_evaluate_context() argument
4405 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_evaluate_context()
4415 int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_stop_endpoint() argument
4423 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_stop_endpoint()
4427 int xhci_queue_reset_ep(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_ep() argument
4438 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_ep()