Lines Matching full:xhci
3 * xHCI host controller driver
58 #include "xhci.h"
59 #include "xhci-trace.h"
60 #include "xhci-mtk.h"
139 static void next_trb(struct xhci_hcd *xhci, in next_trb() argument
156 void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) in inc_deq() argument
199 * xHCI hardware can't handle the chain bit being cleared on a link TRB.
204 static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, in inc_enq() argument
234 (xhci->quirks & XHCI_AMD_0x96_HOST)) && in inc_enq()
235 !xhci_link_trb_quirk(xhci)) { in inc_enq()
259 static inline int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring, in room_on_ring() argument
277 void xhci_ring_cmd_db(struct xhci_hcd *xhci) in xhci_ring_cmd_db() argument
279 if (!(xhci->cmd_ring_state & CMD_RING_STATE_RUNNING)) in xhci_ring_cmd_db()
282 xhci_dbg(xhci, "// Ding dong!\n"); in xhci_ring_cmd_db()
286 writel(DB_VALUE_HOST, &xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
288 readl(&xhci->dba->doorbell[0]); in xhci_ring_cmd_db()
291 static bool xhci_mod_cmd_timer(struct xhci_hcd *xhci, unsigned long delay) in xhci_mod_cmd_timer() argument
293 return mod_delayed_work(system_wq, &xhci->cmd_timer, delay); in xhci_mod_cmd_timer()
296 static struct xhci_command *xhci_next_queued_cmd(struct xhci_hcd *xhci) in xhci_next_queued_cmd() argument
298 return list_first_entry_or_null(&xhci->cmd_list, struct xhci_command, in xhci_next_queued_cmd()
305 * This must be called with command ring stopped and xhci->lock held.
307 static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci, in xhci_handle_stopped_cmd_ring() argument
313 list_for_each_entry(i_cmd, &xhci->cmd_list, cmd_list) { in xhci_handle_stopped_cmd_ring()
320 xhci_dbg(xhci, "Turn aborted command %p to no-op\n", in xhci_handle_stopped_cmd_ring()
331 xhci->cmd_ring_state = CMD_RING_STATE_RUNNING; in xhci_handle_stopped_cmd_ring()
334 if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) && in xhci_handle_stopped_cmd_ring()
335 !(xhci->xhc_state & XHCI_STATE_DYING)) { in xhci_handle_stopped_cmd_ring()
336 xhci->current_cmd = cur_cmd; in xhci_handle_stopped_cmd_ring()
338 xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); in xhci_handle_stopped_cmd_ring()
339 xhci_ring_cmd_db(xhci); in xhci_handle_stopped_cmd_ring()
343 /* Must be called with xhci->lock held, releases and aquires lock back */
344 static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags) in xhci_abort_cmd_ring() argument
346 struct xhci_segment *new_seg = xhci->cmd_ring->deq_seg; in xhci_abort_cmd_ring()
347 union xhci_trb *new_deq = xhci->cmd_ring->dequeue; in xhci_abort_cmd_ring()
351 xhci_dbg(xhci, "Abort command ring\n"); in xhci_abort_cmd_ring()
353 reinit_completion(&xhci->cmd_ring_stop_completion); in xhci_abort_cmd_ring()
363 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
365 next_trb(xhci, NULL, &new_seg, &new_deq); in xhci_abort_cmd_ring()
368 xhci_write_64(xhci, crcr | CMD_RING_ABORT, &xhci->op_regs->cmd_ring); in xhci_abort_cmd_ring()
370 /* Section 4.6.1.2 of xHCI 1.0 spec says software should also time the in xhci_abort_cmd_ring()
376 ret = xhci_handshake(&xhci->op_regs->cmd_ring, in xhci_abort_cmd_ring()
379 xhci_err(xhci, "Abort failed to stop command ring: %d\n", ret); in xhci_abort_cmd_ring()
380 xhci_halt(xhci); in xhci_abort_cmd_ring()
381 xhci_hc_died(xhci); in xhci_abort_cmd_ring()
390 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_abort_cmd_ring()
391 ret = wait_for_completion_timeout(&xhci->cmd_ring_stop_completion, in xhci_abort_cmd_ring()
393 spin_lock_irqsave(&xhci->lock, flags); in xhci_abort_cmd_ring()
395 xhci_dbg(xhci, "No stop event for abort, ring start fail?\n"); in xhci_abort_cmd_ring()
396 xhci_cleanup_command_queue(xhci); in xhci_abort_cmd_ring()
398 xhci_handle_stopped_cmd_ring(xhci, xhci_next_queued_cmd(xhci)); in xhci_abort_cmd_ring()
403 void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, in xhci_ring_ep_doorbell() argument
408 __le32 __iomem *db_addr = &xhci->dba->doorbell[slot_id]; in xhci_ring_ep_doorbell()
409 struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_ring_ep_doorbell()
431 static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in ring_doorbell_for_active_rings() argument
438 ep = &xhci->devs[slot_id]->eps[ep_index]; in ring_doorbell_for_active_rings()
443 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0); in ring_doorbell_for_active_rings()
451 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, in ring_doorbell_for_active_rings()
456 void xhci_ring_doorbell_for_active_rings(struct xhci_hcd *xhci, in xhci_ring_doorbell_for_active_rings() argument
460 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_ring_doorbell_for_active_rings()
463 static struct xhci_virt_ep *xhci_get_virt_ep(struct xhci_hcd *xhci, in xhci_get_virt_ep() argument
468 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in xhci_get_virt_ep()
472 xhci_warn(xhci, "Invalid endpoint index %u\n", ep_index); in xhci_get_virt_ep()
475 if (!xhci->devs[slot_id]) { in xhci_get_virt_ep()
476 xhci_warn(xhci, "No xhci virt device for slot_id %u\n", slot_id); in xhci_get_virt_ep()
480 return &xhci->devs[slot_id]->eps[ep_index]; in xhci_get_virt_ep()
487 struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci, in xhci_triad_to_transfer_ring() argument
493 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_triad_to_transfer_ring()
502 xhci_warn(xhci, in xhci_triad_to_transfer_ring()
512 xhci_warn(xhci, in xhci_triad_to_transfer_ring()
529 static u64 xhci_get_hw_deq(struct xhci_hcd *xhci, struct xhci_virt_device *vdev, in xhci_get_hw_deq() argument
542 ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); in xhci_get_hw_deq()
564 void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, in xhci_find_new_dequeue_state() argument
569 struct xhci_virt_device *dev = xhci->devs[slot_id]; in xhci_find_new_dequeue_state()
582 ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, in xhci_find_new_dequeue_state()
585 xhci_warn(xhci, "WARN can't find new dequeue state " in xhci_find_new_dequeue_state()
602 xhci_warn(xhci, "Can't find new dequeue state, missing cur_td\n"); in xhci_find_new_dequeue_state()
608 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_find_new_dequeue_state()
611 hw_dequeue = xhci_get_hw_deq(xhci, dev, ep_index, stream_id); in xhci_find_new_dequeue_state()
620 if (xhci->quirks & XHCI_EP_CTX_BROKEN_DCS && in xhci_find_new_dequeue_state()
622 halted_seg = trb_in_td(xhci, cur_td->start_seg, in xhci_find_new_dequeue_state()
630 xhci_dbg(xhci, "Endpoint DCS = %d TRB index = %d cycle = %d\n", in xhci_find_new_dequeue_state()
658 next_trb(xhci, ep_ring, &new_seg, &new_deq); in xhci_find_new_dequeue_state()
662 xhci_err(xhci, "Error: Failed finding new dequeue state\n"); in xhci_find_new_dequeue_state()
675 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_find_new_dequeue_state()
678 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_find_new_dequeue_state()
682 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_find_new_dequeue_state()
691 static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in td_to_noop() argument
707 next_trb(xhci, ep_ring, &seg, &trb); in td_to_noop()
711 static void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci, in xhci_stop_watchdog_timer_in_irq() argument
720 * Must be called with xhci->lock held in interrupt context,
721 * releases and re-acquires xhci->lock
723 static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci, in xhci_giveback_urb_in_irq() argument
731 xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--; in xhci_giveback_urb_in_irq()
732 if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) { in xhci_giveback_urb_in_irq()
733 if (xhci->quirks & XHCI_AMD_PLL_FIX) in xhci_giveback_urb_in_irq()
743 static void xhci_unmap_td_bounce_buffer(struct xhci_hcd *xhci, in xhci_unmap_td_bounce_buffer() argument
746 struct device *dev = xhci_to_hcd(xhci)->self.sysdev; in xhci_unmap_td_bounce_buffer()
767 xhci_warn(xhci, "WARN Wrong bounce buffer read length: %zu != %d\n", in xhci_unmap_td_bounce_buffer()
777 static int xhci_td_cleanup(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_td_cleanup() argument
786 xhci_unmap_td_bounce_buffer(xhci, ep_ring, td); in xhci_td_cleanup()
794 xhci_warn(xhci, "URB req %u and actual %u transfer length mismatch\n", in xhci_td_cleanup()
810 xhci_dbg(xhci, "Giveback URB %p, len = %d, expected = %d, status = %d\n", in xhci_td_cleanup()
817 xhci_giveback_urb_in_irq(xhci, td, status); in xhci_td_cleanup()
823 static int xhci_reset_halted_ep(struct xhci_hcd *xhci, unsigned int slot_id, in xhci_reset_halted_ep() argument
829 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_reset_halted_ep()
835 ret = xhci_queue_reset_ep(xhci, command, slot_id, ep_index, reset_type); in xhci_reset_halted_ep()
838 xhci_err(xhci, "ERROR queuing reset endpoint for slot %d ep_index %d, %d\n", in xhci_reset_halted_ep()
843 static void xhci_handle_halted_endpoint(struct xhci_hcd *xhci, in xhci_handle_halted_endpoint() argument
860 err = xhci_reset_halted_ep(xhci, slot_id, ep->ep_index, reset_type); in xhci_handle_halted_endpoint()
866 xhci_cleanup_stalled_ring(xhci, slot_id, ep->ep_index, stream_id, in xhci_handle_halted_endpoint()
869 xhci_ring_cmd_db(xhci); in xhci_handle_halted_endpoint()
874 * We have the xHCI lock, so nothing can modify this list until we drop it.
882 struct xhci_hcd *xhci; in xhci_invalidate_cancelled_tds() local
888 xhci = ep->xhci; in xhci_invalidate_cancelled_tds()
891 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_invalidate_cancelled_tds()
896 ring = xhci_urb_to_transfer_ring(xhci, td->urb); in xhci_invalidate_cancelled_tds()
898 xhci_warn(xhci, "WARN Cancelled URB %p has invalid stream ID %u.\n", in xhci_invalidate_cancelled_tds()
906 hw_deq = xhci_get_hw_deq(xhci, ep->vdev, ep->ep_index, in xhci_invalidate_cancelled_tds()
910 if (trb_in_td(xhci, td->start_seg, td->first_trb, in xhci_invalidate_cancelled_tds()
912 xhci_find_new_dequeue_state(xhci, ep->vdev->slot_id, in xhci_invalidate_cancelled_tds()
917 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
934 static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_stop_ep() argument
947 if (!xhci->devs[slot_id]) in xhci_handle_cmd_stop_ep()
948 xhci_warn(xhci, "Stop endpoint command " in xhci_handle_cmd_stop_ep()
957 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
961 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_stop_ep()
962 ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); in xhci_handle_cmd_stop_ep()
969 xhci_stop_watchdog_timer_in_irq(xhci, ep); in xhci_handle_cmd_stop_ep()
970 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
976 xhci_stop_watchdog_timer_in_irq(xhci, ep); in xhci_handle_cmd_stop_ep()
980 xhci_queue_new_dequeue_state(xhci, slot_id, ep_index, in xhci_handle_cmd_stop_ep()
982 xhci_ring_cmd_db(xhci); in xhci_handle_cmd_stop_ep()
985 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_stop_ep()
1003 ep_ring = xhci_urb_to_transfer_ring(xhci, cur_td->urb); in xhci_handle_cmd_stop_ep()
1004 xhci_unmap_td_bounce_buffer(xhci, ep_ring, cur_td); in xhci_handle_cmd_stop_ep()
1007 xhci_giveback_urb_in_irq(xhci, cur_td, 0); in xhci_handle_cmd_stop_ep()
1012 if (xhci->xhc_state & XHCI_STATE_DYING) in xhci_handle_cmd_stop_ep()
1016 /* Return to the event handler with xhci->lock re-acquired */ in xhci_handle_cmd_stop_ep()
1019 static void xhci_kill_ring_urbs(struct xhci_hcd *xhci, struct xhci_ring *ring) in xhci_kill_ring_urbs() argument
1030 xhci_unmap_td_bounce_buffer(xhci, ring, cur_td); in xhci_kill_ring_urbs()
1034 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_ring_urbs()
1038 static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci, in xhci_kill_endpoint_urbs() argument
1046 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_kill_endpoint_urbs()
1060 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1063 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1069 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_kill_endpoint_urbs()
1072 xhci_kill_ring_urbs(xhci, ring); in xhci_kill_endpoint_urbs()
1081 xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN); in xhci_kill_endpoint_urbs()
1091 * Call with xhci->lock held.
1094 void xhci_hc_died(struct xhci_hcd *xhci) in xhci_hc_died() argument
1098 if (xhci->xhc_state & XHCI_STATE_DYING) in xhci_hc_died()
1101 xhci_err(xhci, "xHCI host controller not responding, assume dead\n"); in xhci_hc_died()
1102 xhci->xhc_state |= XHCI_STATE_DYING; in xhci_hc_died()
1104 xhci_cleanup_command_queue(xhci); in xhci_hc_died()
1107 for (i = 0; i <= HCS_MAX_SLOTS(xhci->hcs_params1); i++) { in xhci_hc_died()
1108 if (!xhci->devs[i]) in xhci_hc_died()
1111 xhci_kill_endpoint_urbs(xhci, i, j); in xhci_hc_died()
1115 if (!(xhci->xhc_state & XHCI_STATE_REMOVING)) in xhci_hc_died()
1116 usb_hc_died(xhci_to_hcd(xhci)); in xhci_hc_died()
1123 * through xhci->state.
1139 struct xhci_hcd *xhci = ep->xhci; in xhci_stop_endpoint_command_watchdog() local
1144 spin_lock_irqsave(&xhci->lock, flags); in xhci_stop_endpoint_command_watchdog()
1149 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_stop_endpoint_command_watchdog()
1150 xhci_dbg(xhci, "Stop EP timer raced with cmd completion, exit"); in xhci_stop_endpoint_command_watchdog()
1153 usbsts = readl(&xhci->op_regs->status); in xhci_stop_endpoint_command_watchdog()
1155 xhci_warn(xhci, "xHCI host not responding to stop endpoint command.\n"); in xhci_stop_endpoint_command_watchdog()
1156 xhci_warn(xhci, "USBSTS:%s\n", xhci_decode_usbsts(str, usbsts)); in xhci_stop_endpoint_command_watchdog()
1160 xhci_halt(xhci); in xhci_stop_endpoint_command_watchdog()
1167 xhci_hc_died(xhci); in xhci_stop_endpoint_command_watchdog()
1169 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_stop_endpoint_command_watchdog()
1170 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_stop_endpoint_command_watchdog()
1171 "xHCI host controller is dead."); in xhci_stop_endpoint_command_watchdog()
1174 static void update_ring_for_set_deq_completion(struct xhci_hcd *xhci, in update_ring_for_set_deq_completion() argument
1215 xhci_dbg(xhci, "Unable to find new dequeue pointer\n"); in update_ring_for_set_deq_completion()
1227 static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_set_deq() argument
1240 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1244 dev = xhci->devs[slot_id]; in xhci_handle_cmd_set_deq()
1247 xhci_warn(xhci, "WARN Set TR deq ptr command for freed stream ID %u\n", in xhci_handle_cmd_set_deq()
1253 ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index); in xhci_handle_cmd_set_deq()
1254 slot_ctx = xhci_get_slot_ctx(xhci, dev->out_ctx); in xhci_handle_cmd_set_deq()
1264 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd invalid because of stream ID configuration\n"); in xhci_handle_cmd_set_deq()
1267 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.\n"); in xhci_handle_cmd_set_deq()
1271 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1276 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed because slot %u was not enabled.\n", in xhci_handle_cmd_set_deq()
1280 xhci_warn(xhci, "WARN Set TR Deq Ptr cmd with unknown completion code of %u.\n", in xhci_handle_cmd_set_deq()
1300 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1307 update_ring_for_set_deq_completion(xhci, dev, in xhci_handle_cmd_set_deq()
1310 xhci_warn(xhci, "Mismatch between completed Set TR Deq Ptr command & xHCI internal state.\n"); in xhci_handle_cmd_set_deq()
1311 xhci_warn(xhci, "ep deq seg = %p, deq ptr = %p\n", in xhci_handle_cmd_set_deq()
1321 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_set_deq()
1324 static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_reset_ep() argument
1333 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1337 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_reset_ep()
1338 ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); in xhci_handle_cmd_reset_ep()
1344 xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, in xhci_handle_cmd_reset_ep()
1351 if (xhci->quirks & XHCI_RESET_EP_QUIRK) { in xhci_handle_cmd_reset_ep()
1354 command = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_handle_cmd_reset_ep()
1358 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, in xhci_handle_cmd_reset_ep()
1360 xhci_queue_configure_endpoint(xhci, command, in xhci_handle_cmd_reset_ep()
1361 xhci->devs[slot_id]->in_ctx->dma, slot_id, in xhci_handle_cmd_reset_ep()
1363 xhci_ring_cmd_db(xhci); in xhci_handle_cmd_reset_ep()
1371 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_reset_ep()
1374 static void xhci_handle_cmd_enable_slot(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_enable_slot() argument
1383 static void xhci_handle_cmd_disable_slot(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_disable_slot() argument
1388 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_disable_slot()
1392 slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); in xhci_handle_cmd_disable_slot()
1395 if (xhci->quirks & XHCI_EP_LIMIT_QUIRK) in xhci_handle_cmd_disable_slot()
1397 xhci_free_device_endpoint_resources(xhci, virt_dev, true); in xhci_handle_cmd_disable_slot()
1400 static void xhci_handle_cmd_config_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_config_ep() argument
1415 * If the command was for a halted endpoint, the xHCI driver in xhci_handle_cmd_config_ep()
1418 virt_dev = xhci->devs[slot_id]; in xhci_handle_cmd_config_ep()
1421 xhci_warn(xhci, "Could not get input context, bad type.\n"); in xhci_handle_cmd_config_ep()
1430 ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->out_ctx, ep_index); in xhci_handle_cmd_config_ep()
1439 if (xhci->quirks & XHCI_RESET_EP_QUIRK && in xhci_handle_cmd_config_ep()
1445 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, in xhci_handle_cmd_config_ep()
1451 ring_doorbell_for_active_rings(xhci, slot_id, ep_index); in xhci_handle_cmd_config_ep()
1457 static void xhci_handle_cmd_addr_dev(struct xhci_hcd *xhci, int slot_id) in xhci_handle_cmd_addr_dev() argument
1462 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_addr_dev()
1463 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_addr_dev()
1467 static void xhci_handle_cmd_reset_dev(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_reset_dev() argument
1473 vdev = xhci->devs[slot_id]; in xhci_handle_cmd_reset_dev()
1474 slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); in xhci_handle_cmd_reset_dev()
1477 xhci_dbg(xhci, "Completed reset device command.\n"); in xhci_handle_cmd_reset_dev()
1478 if (!xhci->devs[slot_id]) in xhci_handle_cmd_reset_dev()
1479 xhci_warn(xhci, "Reset device command completion " in xhci_handle_cmd_reset_dev()
1483 static void xhci_handle_cmd_nec_get_fw(struct xhci_hcd *xhci, in xhci_handle_cmd_nec_get_fw() argument
1486 if (!(xhci->quirks & XHCI_NEC_HOST)) { in xhci_handle_cmd_nec_get_fw()
1487 xhci_warn(xhci, "WARN NEC_GET_FW command on non-NEC host\n"); in xhci_handle_cmd_nec_get_fw()
1490 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, in xhci_handle_cmd_nec_get_fw()
1508 void xhci_cleanup_command_queue(struct xhci_hcd *xhci) in xhci_cleanup_command_queue() argument
1511 xhci->current_cmd = NULL; in xhci_cleanup_command_queue()
1512 list_for_each_entry_safe(cur_cmd, tmp_cmd, &xhci->cmd_list, cmd_list) in xhci_cleanup_command_queue()
1518 struct xhci_hcd *xhci; in xhci_handle_command_timeout() local
1522 xhci = container_of(to_delayed_work(work), struct xhci_hcd, cmd_timer); in xhci_handle_command_timeout()
1524 spin_lock_irqsave(&xhci->lock, flags); in xhci_handle_command_timeout()
1530 if (!xhci->current_cmd || delayed_work_pending(&xhci->cmd_timer)) { in xhci_handle_command_timeout()
1531 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1535 xhci->current_cmd->status = COMP_COMMAND_ABORTED; in xhci_handle_command_timeout()
1538 hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); in xhci_handle_command_timeout()
1540 xhci_hc_died(xhci); in xhci_handle_command_timeout()
1544 if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && in xhci_handle_command_timeout()
1547 xhci->cmd_ring_state = CMD_RING_STATE_ABORTED; in xhci_handle_command_timeout()
1548 xhci_dbg(xhci, "Command timeout\n"); in xhci_handle_command_timeout()
1549 xhci_abort_cmd_ring(xhci, flags); in xhci_handle_command_timeout()
1554 if (xhci->xhc_state & XHCI_STATE_REMOVING) { in xhci_handle_command_timeout()
1555 xhci_dbg(xhci, "host removed, ring start fail?\n"); in xhci_handle_command_timeout()
1556 xhci_cleanup_command_queue(xhci); in xhci_handle_command_timeout()
1562 xhci_dbg(xhci, "Command timeout on stopped ring\n"); in xhci_handle_command_timeout()
1563 xhci_handle_stopped_cmd_ring(xhci, xhci->current_cmd); in xhci_handle_command_timeout()
1566 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_handle_command_timeout()
1570 static void handle_cmd_completion(struct xhci_hcd *xhci, in handle_cmd_completion() argument
1582 cmd_trb = xhci->cmd_ring->dequeue; in handle_cmd_completion()
1584 trace_xhci_handle_command(xhci->cmd_ring, &cmd_trb->generic); in handle_cmd_completion()
1586 cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg, in handle_cmd_completion()
1593 xhci_warn(xhci, in handle_cmd_completion()
1598 cmd = list_first_entry(&xhci->cmd_list, struct xhci_command, cmd_list); in handle_cmd_completion()
1600 cancel_delayed_work(&xhci->cmd_timer); in handle_cmd_completion()
1606 complete_all(&xhci->cmd_ring_stop_completion); in handle_cmd_completion()
1610 if (cmd->command_trb != xhci->cmd_ring->dequeue) { in handle_cmd_completion()
1611 xhci_err(xhci, in handle_cmd_completion()
1623 xhci->cmd_ring_state = CMD_RING_STATE_STOPPED; in handle_cmd_completion()
1625 if (xhci->current_cmd == cmd) in handle_cmd_completion()
1626 xhci->current_cmd = NULL; in handle_cmd_completion()
1634 xhci_handle_cmd_enable_slot(xhci, slot_id, cmd, cmd_comp_code); in handle_cmd_completion()
1637 xhci_handle_cmd_disable_slot(xhci, slot_id); in handle_cmd_completion()
1641 xhci_handle_cmd_config_ep(xhci, slot_id, event, in handle_cmd_completion()
1647 xhci_handle_cmd_addr_dev(xhci, slot_id); in handle_cmd_completion()
1653 xhci_handle_cmd_stop_ep(xhci, slot_id, cmd_trb, event); in handle_cmd_completion()
1658 xhci_handle_cmd_set_deq(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1668 xhci_handle_cmd_reset_ep(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1672 * Use the SLOT_ID from the command TRB instead (xhci 4.6.11) in handle_cmd_completion()
1676 xhci_handle_cmd_reset_dev(xhci, slot_id, event); in handle_cmd_completion()
1679 xhci_handle_cmd_nec_get_fw(xhci, event); in handle_cmd_completion()
1683 xhci_info(xhci, "INFO unknown command type %d\n", cmd_type); in handle_cmd_completion()
1688 if (!list_is_singular(&xhci->cmd_list)) { in handle_cmd_completion()
1689 xhci->current_cmd = list_first_entry(&cmd->cmd_list, in handle_cmd_completion()
1691 xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); in handle_cmd_completion()
1692 } else if (xhci->current_cmd == cmd) { in handle_cmd_completion()
1693 xhci->current_cmd = NULL; in handle_cmd_completion()
1699 inc_deq(xhci, xhci->cmd_ring); in handle_cmd_completion()
1702 static void handle_vendor_event(struct xhci_hcd *xhci, in handle_vendor_event() argument
1708 xhci_dbg(xhci, "Vendor specific event TRB type = %u\n", trb_type); in handle_vendor_event()
1709 if (trb_type == TRB_NEC_CMD_COMP && (xhci->quirks & XHCI_NEC_HOST)) in handle_vendor_event()
1710 handle_cmd_completion(xhci, &event->event_cmd); in handle_vendor_event()
1713 static void handle_device_notification(struct xhci_hcd *xhci, in handle_device_notification() argument
1720 if (!xhci->devs[slot_id]) { in handle_device_notification()
1721 xhci_warn(xhci, "Device Notification event for " in handle_device_notification()
1726 xhci_dbg(xhci, "Device Wake Notification event for slot ID %u\n", in handle_device_notification()
1728 udev = xhci->devs[slot_id]->udev; in handle_device_notification()
1734 * Quirk hanlder for errata seen on Cavium ThunderX2 processor XHCI
1745 static void xhci_cavium_reset_phy_quirk(struct xhci_hcd *xhci) in xhci_cavium_reset_phy_quirk() argument
1747 struct usb_hcd *hcd = xhci_to_hcd(xhci); in xhci_cavium_reset_phy_quirk()
1762 static void handle_port_status(struct xhci_hcd *xhci, in handle_port_status() argument
1777 xhci_warn(xhci, in handle_port_status()
1781 max_ports = HCS_MAX_PORTS(xhci->hcs_params1); in handle_port_status()
1784 xhci_warn(xhci, "Port change event with invalid port ID %d\n", in handle_port_status()
1786 inc_deq(xhci, xhci->event_ring); in handle_port_status()
1790 port = &xhci->hw_ports[port_id - 1]; in handle_port_status()
1792 xhci_warn(xhci, "Port change event, no port for port ID %u\n", in handle_port_status()
1799 if (port->rhub == &xhci->usb3_rhub && xhci->shared_hcd == NULL) { in handle_port_status()
1800 xhci_dbg(xhci, "ignore port event for removed USB3 hcd\n"); in handle_port_status()
1810 xhci_dbg(xhci, "Port change event, %d-%d, id %d, portsc: 0x%x\n", in handle_port_status()
1816 xhci_dbg(xhci, "resume root hub\n"); in handle_port_status()
1822 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
1823 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
1824 xhci->devs[slot_id]->flags |= VDEV_PORT_ERROR; in handle_port_status()
1828 xhci_dbg(xhci, "port resume event for port %d\n", port_id); in handle_port_status()
1830 cmd_reg = readl(&xhci->op_regs->command); in handle_port_status()
1832 xhci_warn(xhci, "xHC is not running.\n"); in handle_port_status()
1837 xhci_dbg(xhci, "remote wake SS port %d\n", port_id); in handle_port_status()
1843 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1845 xhci_set_link_state(xhci, port, XDEV_U0); in handle_port_status()
1852 xhci_dbg(xhci, "resume HS port %d\n", port_id); in handle_port_status()
1873 xhci_dbg(xhci, "resume SS port %d finished\n", port_id); in handle_port_status()
1882 slot_id = xhci_find_slot_id_by_port(hcd, xhci, hcd_portnum + 1); in handle_port_status()
1883 if (slot_id && xhci->devs[slot_id]) in handle_port_status()
1884 xhci_ring_device(xhci, slot_id); in handle_port_status()
1886 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1895 * Check to see if xhci-hub.c is waiting on RExit to U0 transition (or in handle_port_status()
1907 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1908 if ((xhci->quirks & XHCI_RESET_PLL_ON_DISCONNECT) && in handle_port_status()
1910 xhci_cavium_reset_phy_quirk(xhci); in handle_port_status()
1915 inc_deq(xhci, xhci->event_ring); in handle_port_status()
1925 * xHCI port-status-change events occur when the "or" of all the in handle_port_status()
1931 xhci_dbg(xhci, "%s: starting port polling.\n", __func__); in handle_port_status()
1933 spin_unlock(&xhci->lock); in handle_port_status()
1936 spin_lock(&xhci->lock); in handle_port_status()
1945 struct xhci_segment *trb_in_td(struct xhci_hcd *xhci, in trb_in_td() argument
1970 xhci_warn(xhci, in trb_in_td()
2006 static void xhci_clear_hub_tt_buffer(struct xhci_hcd *xhci, struct xhci_td *td, in xhci_clear_hub_tt_buffer() argument
2014 (td->urb->dev->tt->hub != xhci_to_hcd(xhci)->self.root_hub) && in xhci_clear_hub_tt_buffer()
2029 static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci, in xhci_requires_manual_halt_cleanup() argument
2049 int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code) in xhci_is_vendor_info_code() argument
2055 xhci_dbg(xhci, "Vendor defined info completion code %u\n", in xhci_is_vendor_info_code()
2057 xhci_dbg(xhci, "Treating code as success.\n"); in xhci_is_vendor_info_code()
2063 static int finish_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in finish_td() argument
2069 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in finish_td()
2081 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in finish_td()
2084 * xhci internal endpoint state will go to a "halt" state for in finish_td()
2094 xhci_clear_hub_tt_buffer(xhci, td, ep); in finish_td()
2096 xhci_handle_halted_endpoint(xhci, ep, ep_ring->stream_id, td, in finish_td()
2103 inc_deq(xhci, ep_ring); in finish_td()
2106 return xhci_td_cleanup(xhci, td, ep_ring, td->status); in finish_td()
2110 static int sum_trb_lengths(struct xhci_hcd *xhci, struct xhci_ring *ring, in sum_trb_lengths() argument
2117 for (sum = 0; trb != stop_trb; next_trb(xhci, ring, &seg, &trb)) { in sum_trb_lengths()
2127 static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_ctrl_td() argument
2137 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in process_ctrl_td()
2145 xhci_warn(xhci, "WARN: Success on ctrl %s TRB without IOC set?\n", in process_ctrl_td()
2159 xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n"); in process_ctrl_td()
2174 xhci_warn(xhci, "WARN: unexpected TRB Type %d\n", in process_ctrl_td()
2181 if (!xhci_requires_manual_halt_cleanup(xhci, in process_ctrl_td()
2184 xhci_dbg(xhci, "TRB error %u, halted endpoint index = %u\n", in process_ctrl_td()
2208 xhci_dbg(xhci, "Waiting for status stage event\n"); in process_ctrl_td()
2217 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_ctrl_td()
2223 static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_isoc_td() argument
2248 /* Don't overwrite status if TD had an error, see xHCI 4.9.1 */ in process_isoc_td()
2253 if (xhci->quirks & XHCI_TRUST_TX_LENGTH) in process_isoc_td()
2306 frame->actual_length = sum_trb_lengths(xhci, ep->ring, ep_trb) + in process_isoc_td()
2316 xhci_dbg(xhci, "Error mid isoc TD, wait for final completion event\n"); in process_isoc_td()
2321 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_isoc_td()
2324 static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, in skip_isoc_td() argument
2345 inc_deq(xhci, ep->ring); in skip_isoc_td()
2347 return xhci_td_cleanup(xhci, td, ep->ring, status); in skip_isoc_td()
2353 static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_bulk_intr_td() argument
2361 slot_ctx = xhci_get_slot_ctx(xhci, ep->vdev->out_ctx); in process_bulk_intr_td()
2372 xhci_warn(xhci, "WARN Successful completion on short TX\n"); in process_bulk_intr_td()
2373 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2380 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2394 if (xhci->quirks & XHCI_NO_SOFT_RETRY || in process_bulk_intr_td()
2401 xhci_handle_halted_endpoint(xhci, ep, ep_ring->stream_id, td, in process_bulk_intr_td()
2413 sum_trb_lengths(xhci, ep_ring, ep_trb) + in process_bulk_intr_td()
2417 xhci_warn(xhci, "bad transfer trb length %d in event trb\n", in process_bulk_intr_td()
2422 return finish_td(xhci, ep, ep_ring, td, trb_comp_code); in process_bulk_intr_td()
2430 static int handle_tx_event(struct xhci_hcd *xhci, in handle_tx_event() argument
2454 ep = xhci_get_virt_ep(xhci, slot_id, ep_index); in handle_tx_event()
2456 xhci_err(xhci, "ERROR Invalid Transfer event\n"); in handle_tx_event()
2460 xdev = xhci->devs[slot_id]; in handle_tx_event()
2462 ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in handle_tx_event()
2465 xhci_err(xhci, in handle_tx_event()
2471 /* Some transfer events don't always point to a trb, see xhci 4.17.4 */ in handle_tx_event()
2478 xhci_dbg(xhci, "Stream transaction error ep %u no id\n", in handle_tx_event()
2481 xhci_handle_halted_endpoint(xhci, ep, 0, NULL, in handle_tx_event()
2484 xhci_handle_halted_endpoint(xhci, ep, 0, NULL, in handle_tx_event()
2492 xhci_err(xhci, "ERROR Transfer event for unknown stream ring slot %u ep %u\n", in handle_tx_event()
2513 if (xhci->quirks & XHCI_TRUST_TX_LENGTH || in handle_tx_event()
2517 xhci_warn_ratelimited(xhci, in handle_tx_event()
2524 xhci_dbg(xhci, "Stopped on Transfer TRB for slot %u ep %u\n", in handle_tx_event()
2528 xhci_dbg(xhci, in handle_tx_event()
2533 xhci_dbg(xhci, in handle_tx_event()
2539 xhci_dbg(xhci, "Stalled endpoint for slot %u ep %u\n", slot_id, in handle_tx_event()
2545 xhci_dbg(xhci, "Split transaction error for slot %u ep %u\n", in handle_tx_event()
2550 xhci_dbg(xhci, "Transfer error for slot %u ep %u on endpoint\n", in handle_tx_event()
2555 xhci_dbg(xhci, "Babble error for slot %u ep %u on endpoint\n", in handle_tx_event()
2561 xhci_warn(xhci, in handle_tx_event()
2568 xhci_warn(xhci, in handle_tx_event()
2574 xhci_warn(xhci, in handle_tx_event()
2579 xhci_warn(xhci, in handle_tx_event()
2589 xhci_dbg(xhci, "underrun event on endpoint\n"); in handle_tx_event()
2591 xhci_dbg(xhci, "Underrun Event for slot %d ep %d " in handle_tx_event()
2597 xhci_dbg(xhci, "overrun event on endpoint\n"); in handle_tx_event()
2599 xhci_dbg(xhci, "Overrun Event for slot %d ep %d " in handle_tx_event()
2612 xhci_dbg(xhci, in handle_tx_event()
2618 xhci_dbg(xhci, in handle_tx_event()
2625 xhci_warn(xhci, in handle_tx_event()
2631 if (xhci_is_vendor_info_code(xhci, trb_comp_code)) { in handle_tx_event()
2635 xhci_warn(xhci, in handle_tx_event()
2657 xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n", in handle_tx_event()
2663 xhci_dbg(xhci, "td_list is empty while skip flag set. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2667 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
2669 xhci_handle_halted_endpoint(xhci, ep, in handle_tx_event()
2680 xhci_dbg(xhci, "All tds on the ep_ring skipped. Clear skip flag for slot %u ep %u.\n", in handle_tx_event()
2691 ep_seg = trb_in_td(xhci, ep_ring->deq_seg, ep_ring->dequeue, in handle_tx_event()
2710 skip_isoc_td(xhci, td, ep, status); in handle_tx_event()
2718 if ((xhci->quirks & XHCI_SPURIOUS_SUCCESS) && in handle_tx_event()
2725 * xhci 4.10.2 states isoc endpoints should continue in handle_tx_event()
2729 * xhci 4.9.1 states that if there are errors in mult-TRB in handle_tx_event()
2739 ep_seg = trb_in_td(xhci, td_next->start_seg, td_next->first_trb, in handle_tx_event()
2743 xhci_dbg(xhci, "Missing TD completion event after mid TD error\n"); in handle_tx_event()
2746 inc_deq(xhci, ep_ring); in handle_tx_event()
2747 xhci_td_cleanup(xhci, td, ep_ring, td->status); in handle_tx_event()
2754 xhci_err(xhci, in handle_tx_event()
2759 trb_in_td(xhci, ep_ring->deq_seg, in handle_tx_event()
2771 xhci_dbg(xhci, in handle_tx_event()
2793 xhci_requires_manual_halt_cleanup(xhci, ep_ctx, in handle_tx_event()
2795 xhci_handle_halted_endpoint(xhci, ep, in handle_tx_event()
2805 process_ctrl_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2807 process_isoc_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2809 process_bulk_intr_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2820 inc_deq(xhci, xhci->event_ring); in handle_tx_event()
2833 xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", in handle_tx_event()
2835 xhci->event_ring->deq_seg, in handle_tx_event()
2836 xhci->event_ring->dequeue), in handle_tx_event()
2846 * xhci->lock between event processing (e.g. to pass up port status changes).
2850 static int xhci_handle_event(struct xhci_hcd *xhci) in xhci_handle_event() argument
2857 if (!xhci->event_ring || !xhci->event_ring->dequeue) { in xhci_handle_event()
2858 xhci_err(xhci, "ERROR event ring not ready\n"); in xhci_handle_event()
2862 event = xhci->event_ring->dequeue; in xhci_handle_event()
2865 xhci->event_ring->cycle_state) in xhci_handle_event()
2868 trace_xhci_handle_event(xhci->event_ring, &event->generic); in xhci_handle_event()
2878 handle_cmd_completion(xhci, &event->event_cmd); in xhci_handle_event()
2881 handle_port_status(xhci, event); in xhci_handle_event()
2885 ret = handle_tx_event(xhci, &event->trans_event); in xhci_handle_event()
2890 handle_device_notification(xhci, event); in xhci_handle_event()
2895 handle_vendor_event(xhci, event); in xhci_handle_event()
2897 xhci_warn(xhci, "ERROR unknown event type %d\n", in xhci_handle_event()
2904 if (xhci->xhc_state & XHCI_STATE_DYING) { in xhci_handle_event()
2905 xhci_dbg(xhci, "xHCI host dying, returning from " in xhci_handle_event()
2912 inc_deq(xhci, xhci->event_ring); in xhci_handle_event()
2925 static void xhci_update_erst_dequeue(struct xhci_hcd *xhci, in xhci_update_erst_dequeue() argument
2931 temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
2933 if (event_ring_deq != xhci->event_ring->dequeue) { in xhci_update_erst_dequeue()
2934 deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, in xhci_update_erst_dequeue()
2935 xhci->event_ring->dequeue); in xhci_update_erst_dequeue()
2937 xhci_warn(xhci, "WARN something wrong with SW event ring dequeue ptr\n"); in xhci_update_erst_dequeue()
2953 xhci_write_64(xhci, temp_64, &xhci->ir_set->erst_dequeue); in xhci_update_erst_dequeue()
2957 * xHCI spec says we can get an interrupt, and if the HC has an error condition,
2963 struct xhci_hcd *xhci = hcd_to_xhci(hcd); in xhci_irq() local
2971 spin_lock_irqsave(&xhci->lock, flags); in xhci_irq()
2973 status = readl(&xhci->op_regs->status); in xhci_irq()
2975 xhci_hc_died(xhci); in xhci_irq()
2984 xhci_warn(xhci, "WARNING: Host System Error\n"); in xhci_irq()
2985 xhci_halt(xhci); in xhci_irq()
2996 writel(status, &xhci->op_regs->status); in xhci_irq()
3000 irq_pending = readl(&xhci->ir_set->irq_pending); in xhci_irq()
3002 writel(irq_pending, &xhci->ir_set->irq_pending); in xhci_irq()
3005 if (xhci->xhc_state & XHCI_STATE_DYING || in xhci_irq()
3006 xhci->xhc_state & XHCI_STATE_HALTED) { in xhci_irq()
3007 xhci_dbg(xhci, "xHCI dying, ignoring interrupt. " in xhci_irq()
3012 temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); in xhci_irq()
3013 xhci_write_64(xhci, temp_64 | ERST_EHB, in xhci_irq()
3014 &xhci->ir_set->erst_dequeue); in xhci_irq()
3019 event_ring_deq = xhci->event_ring->dequeue; in xhci_irq()
3023 while (xhci_handle_event(xhci) > 0) { in xhci_irq()
3026 xhci_update_erst_dequeue(xhci, event_ring_deq); in xhci_irq()
3027 event_ring_deq = xhci->event_ring->dequeue; in xhci_irq()
3032 xhci_update_erst_dequeue(xhci, event_ring_deq); in xhci_irq()
3036 spin_unlock_irqrestore(&xhci->lock, flags); in xhci_irq()
3055 static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, in queue_trb() argument
3071 inc_enq(xhci, ring, more_trbs_coming); in queue_trb()
3078 static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, in prepare_ring() argument
3090 xhci_warn(xhci, "WARN urb submitted to disabled ep\n"); in prepare_ring()
3093 xhci_warn(xhci, "WARN waiting for error on ep to be cleared\n"); in prepare_ring()
3098 xhci_dbg(xhci, "WARN halted endpoint, queueing URB anyway.\n"); in prepare_ring()
3103 xhci_err(xhci, "ERROR unknown endpoint state for ep\n"); in prepare_ring()
3112 if (room_on_ring(xhci, ep_ring, num_trbs)) in prepare_ring()
3115 if (ep_ring == xhci->cmd_ring) { in prepare_ring()
3116 xhci_err(xhci, "Do not support expand command ring\n"); in prepare_ring()
3120 xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, in prepare_ring()
3123 if (xhci_ring_expansion(xhci, ep_ring, num_trbs_needed, in prepare_ring()
3125 xhci_err(xhci, "Ring expansion failed\n"); in prepare_ring()
3134 if (!xhci_link_trb_quirk(xhci) && in prepare_ring()
3136 (xhci->quirks & XHCI_AMD_0x96_HOST))) in prepare_ring()
3156 static int prepare_transfer(struct xhci_hcd *xhci, in prepare_transfer() argument
3169 struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in prepare_transfer()
3173 xhci_dbg(xhci, "Can't prepare ring for bad stream ID %u\n", in prepare_transfer()
3178 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in prepare_transfer()
3262 static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, in giveback_first_trb() argument
3275 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, stream_id); in giveback_first_trb()
3278 static void check_interval(struct xhci_hcd *xhci, struct urb *urb, in check_interval() argument
3297 "Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n", in check_interval()
3309 * xHCI uses normal TRBs for both bulk and interrupt. When the interrupt
3314 int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_intr_tx() argument
3319 ep_ctx = xhci_get_ep_ctx(xhci, xhci->devs[slot_id]->out_ctx, ep_index); in xhci_queue_intr_tx()
3320 check_interval(xhci, urb, ep_ctx); in xhci_queue_intr_tx()
3322 return xhci_queue_bulk_tx(xhci, mem_flags, urb, slot_id, ep_index); in xhci_queue_intr_tx()
3326 * For xHCI 1.0 host controllers, TD size is the number of max packet sized
3337 * For xHCI 0.96 and older, TD size field should be the remaining bytes
3345 static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred, in xhci_td_remainder() argument
3351 /* MTK xHCI 0.96 contains some features from 1.0 */ in xhci_td_remainder()
3352 if (xhci->hci_version < 0x100 && !(xhci->quirks & XHCI_MTK_HOST)) in xhci_td_remainder()
3360 /* for MTK xHCI 0.96, TD size include this TRB, but not in 1.x */ in xhci_td_remainder()
3361 if ((xhci->quirks & XHCI_MTK_HOST) && (xhci->hci_version < 0x100)) in xhci_td_remainder()
3372 static int xhci_align_td(struct xhci_hcd *xhci, struct urb *urb, u32 enqd_len, in xhci_align_td() argument
3375 struct device *dev = xhci_to_hcd(xhci)->self.sysdev; in xhci_align_td()
3388 xhci_dbg(xhci, "Unaligned %d bytes, buff len %d\n", in xhci_align_td()
3394 xhci_dbg(xhci, "split align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3414 xhci_warn(xhci, "WARN Wrong bounce buffer write length: %zu != %d\n", in xhci_align_td()
3429 xhci_warn(xhci, "Failed mapping bounce buffer, not aligning\n"); in xhci_align_td()
3436 xhci_dbg(xhci, "Bounce align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3442 int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_bulk_tx() argument
3460 ring = xhci_urb_to_transfer_ring(xhci, urb); in xhci_queue_bulk_tx()
3477 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3526 if (xhci_align_td(xhci, urb, enqd_len, in xhci_queue_bulk_tx()
3554 remainder = xhci_td_remainder(xhci, enqd_len, trb_buff_len, in xhci_queue_bulk_tx()
3561 queue_trb(xhci, ring, more_trbs_coming | need_zero_pkt, in xhci_queue_bulk_tx()
3586 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3592 queue_trb(xhci, ring, 0, 0, 0, TRB_INTR_TARGET(0), field); in xhci_queue_bulk_tx()
3597 giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, in xhci_queue_bulk_tx()
3602 /* Caller must have locked xhci->lock */
3603 int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_ctrl_tx() argument
3616 ep_ring = xhci_urb_to_transfer_ring(xhci, urb); in xhci_queue_ctrl_tx()
3636 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_ctrl_tx()
3662 /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */ in xhci_queue_ctrl_tx()
3663 if ((xhci->hci_version >= 0x100) || (xhci->quirks & XHCI_MTK_HOST)) { in xhci_queue_ctrl_tx()
3672 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3699 remainder = xhci_td_remainder(xhci, 0, in xhci_queue_ctrl_tx()
3708 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3725 queue_trb(xhci, ep_ring, false, in xhci_queue_ctrl_tx()
3732 giveback_first_trb(xhci, slot_id, ep_index, 0, in xhci_queue_ctrl_tx()
3743 * zero. Only xHCI 1.0 host controllers support this field.
3745 static unsigned int xhci_get_burst_count(struct xhci_hcd *xhci, in xhci_get_burst_count() argument
3750 if (xhci->hci_version < 0x100 || urb->dev->speed < USB_SPEED_SUPER) in xhci_get_burst_count()
3765 static unsigned int xhci_get_last_burst_packet_count(struct xhci_hcd *xhci, in xhci_get_last_burst_packet_count() argument
3771 if (xhci->hci_version < 0x100) in xhci_get_last_burst_packet_count()
3797 static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci, in xhci_get_isoc_frame_id() argument
3817 ist = HCS_IST(xhci->hcs_params2) & 0x7; in xhci_get_isoc_frame_id()
3818 if (HCS_IST(xhci->hcs_params2) & (1 << 3)) in xhci_get_isoc_frame_id()
3834 current_frame_id = readl(&xhci->run_regs->microframe_index); in xhci_get_isoc_frame_id()
3842 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()
3843 __func__, index, readl(&xhci->run_regs->microframe_index), in xhci_get_isoc_frame_id()
3871 xhci_warn(xhci, "Frame ID %d (reg %d, index %d) beyond range (%d, %d)\n", in xhci_get_isoc_frame_id()
3874 xhci_warn(xhci, "Ignore frame ID field, use SIA bit instead\n"); in xhci_get_isoc_frame_id()
3882 static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i) in trb_block_event_intr() argument
3884 if (xhci->hci_version < 0x100) in trb_block_event_intr()
3893 if (i && xhci->quirks & XHCI_AVOID_BEI) in trb_block_event_intr()
3900 static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_isoc_tx() argument
3918 xep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_isoc_tx()
3919 ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; in xhci_queue_isoc_tx()
3923 xhci_dbg(xhci, "Isoc URB with zero packets?\n"); in xhci_queue_isoc_tx()
3948 burst_count = xhci_get_burst_count(xhci, urb, total_pkt_count); in xhci_queue_isoc_tx()
3949 last_burst_pkt_count = xhci_get_last_burst_packet_count(xhci, in xhci_queue_isoc_tx()
3954 ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index, in xhci_queue_isoc_tx()
3966 HCC_CFC(xhci->hcc_params)) { in xhci_queue_isoc_tx()
3967 frame_id = xhci_get_isoc_frame_id(xhci, urb, i); in xhci_queue_isoc_tx()
3981 /* xhci 1.1 with ETE uses TD_Size field for TBC, old is Rsvdz */ in xhci_queue_isoc_tx()
4007 if (trb_block_event_intr(xhci, num_tds, i)) in xhci_queue_isoc_tx()
4016 remainder = xhci_td_remainder(xhci, running_total, in xhci_queue_isoc_tx()
4023 /* xhci 1.1 with ETE uses TD Size field for TBC */ in xhci_queue_isoc_tx()
4030 queue_trb(xhci, ep_ring, more_trbs_coming, in xhci_queue_isoc_tx()
4043 xhci_err(xhci, "ISOC TD length unmatch\n"); in xhci_queue_isoc_tx()
4050 if (HCC_CFC(xhci->hcc_params)) in xhci_queue_isoc_tx()
4053 if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) { in xhci_queue_isoc_tx()
4054 if (xhci->quirks & XHCI_AMD_PLL_FIX) in xhci_queue_isoc_tx()
4057 xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs++; in xhci_queue_isoc_tx()
4059 giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id, in xhci_queue_isoc_tx()
4075 td_to_noop(xhci, ep_ring, &urb_priv->td[0], true); in xhci_queue_isoc_tx()
4089 * Update interval as xhci_queue_intr_tx does. Use xhci frame_index to
4093 int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags, in xhci_queue_isoc_tx_prepare() argument
4105 xdev = xhci->devs[slot_id]; in xhci_queue_isoc_tx_prepare()
4106 xep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_isoc_tx_prepare()
4108 ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); in xhci_queue_isoc_tx_prepare()
4118 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in xhci_queue_isoc_tx_prepare()
4127 check_interval(xhci, urb, ep_ctx); in xhci_queue_isoc_tx_prepare()
4130 if (HCC_CFC(xhci->hcc_params) && !list_empty(&ep_ring->td_list)) { in xhci_queue_isoc_tx_prepare()
4137 start_frame = readl(&xhci->run_regs->microframe_index); in xhci_queue_isoc_tx_prepare()
4143 ist = HCS_IST(xhci->hcs_params2) & 0x7; in xhci_queue_isoc_tx_prepare()
4144 if (HCS_IST(xhci->hcs_params2) & (1 << 3)) in xhci_queue_isoc_tx_prepare()
4165 return xhci_queue_isoc_tx(xhci, mem_flags, urb, slot_id, ep_index); in xhci_queue_isoc_tx_prepare()
4175 * Don't decrement xhci->cmd_ring_reserved_trbs after we've queued the TRB
4178 static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in queue_command() argument
4182 int reserved_trbs = xhci->cmd_ring_reserved_trbs; in queue_command()
4185 if ((xhci->xhc_state & XHCI_STATE_DYING) || in queue_command()
4186 (xhci->xhc_state & XHCI_STATE_HALTED)) { in queue_command()
4187 xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n"); in queue_command()
4194 ret = prepare_ring(xhci, xhci->cmd_ring, EP_STATE_RUNNING, in queue_command()
4197 xhci_err(xhci, "ERR: No room for command on command ring\n"); in queue_command()
4199 xhci_err(xhci, "ERR: Reserved TRB counting for " in queue_command()
4204 cmd->command_trb = xhci->cmd_ring->enqueue; in queue_command()
4207 if (list_empty(&xhci->cmd_list)) { in queue_command()
4208 xhci->current_cmd = cmd; in queue_command()
4209 xhci_mod_cmd_timer(xhci, XHCI_CMD_DEFAULT_TIMEOUT); in queue_command()
4212 list_add_tail(&cmd->cmd_list, &xhci->cmd_list); in queue_command()
4214 queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3, in queue_command()
4215 field4 | xhci->cmd_ring->cycle_state); in queue_command()
4220 int xhci_queue_slot_control(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_slot_control() argument
4223 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_slot_control()
4228 int xhci_queue_address_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_address_device() argument
4231 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_address_device()
4237 int xhci_queue_vendor_command(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_vendor_command() argument
4240 return queue_command(xhci, cmd, field1, field2, field3, field4, false); in xhci_queue_vendor_command()
4244 int xhci_queue_reset_device(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_device() argument
4247 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_device()
4253 int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, in xhci_queue_configure_endpoint() argument
4257 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_configure_endpoint()
4264 int xhci_queue_evaluate_context(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_evaluate_context() argument
4267 return queue_command(xhci, cmd, lower_32_bits(in_ctx_ptr), in xhci_queue_evaluate_context()
4277 int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_stop_endpoint() argument
4285 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_stop_endpoint()
4290 void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, in xhci_queue_new_dequeue_state() argument
4304 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_queue_new_dequeue_state()
4316 xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr\n"); in xhci_queue_new_dequeue_state()
4317 xhci_warn(xhci, "WARN deq seg = %p, deq pt = %p\n", in xhci_queue_new_dequeue_state()
4321 ep = &xhci->devs[slot_id]->eps[ep_index]; in xhci_queue_new_dequeue_state()
4323 xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr\n"); in xhci_queue_new_dequeue_state()
4324 xhci_warn(xhci, "A Set TR Deq Ptr command is pending.\n"); in xhci_queue_new_dequeue_state()
4329 cmd = xhci_alloc_command(xhci, false, GFP_ATOMIC); in xhci_queue_new_dequeue_state()
4337 ret = queue_command(xhci, cmd, in xhci_queue_new_dequeue_state()
4342 xhci_free_command(xhci, cmd); in xhci_queue_new_dequeue_state()
4354 int xhci_queue_reset_ep(struct xhci_hcd *xhci, struct xhci_command *cmd, in xhci_queue_reset_ep() argument
4365 return queue_command(xhci, cmd, 0, 0, 0, in xhci_queue_reset_ep()