Lines Matching +full:generic +full:- +full:xhci
1 // SPDX-License-Identifier: GPL-2.0
3 * xHCI host controller driver
26 * until you reach a non-link TRB.
57 #include <linux/dma-mapping.h>
58 #include "xhci.h"
59 #include "xhci-trace.h"
61 static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
74 if (!seg || !trb || trb < seg->trbs) in xhci_trb_virt_to_dma()
77 segment_offset = trb - seg->trbs; in xhci_trb_virt_to_dma()
80 return seg->dma + (segment_offset * sizeof(*trb)); in xhci_trb_virt_to_dma()
85 return TRB_TYPE_NOOP_LE32(trb->generic.field[3]); in trb_is_noop()
90 return TRB_TYPE_LINK_LE32(trb->link.control); in trb_is_link()
95 return trb == &seg->trbs[TRBS_PER_SEGMENT - 1]; in last_trb_on_seg()
101 return last_trb_on_seg(seg, trb) && (seg->next == ring->first_seg); in last_trb_on_ring()
106 return le32_to_cpu(trb->link.control) & LINK_TOGGLE; in link_trb_toggles_cycle()
111 struct urb_priv *urb_priv = td->urb->hcpriv; in last_td_in_urb()
113 return urb_priv->num_tds_done == urb_priv->num_tds; in last_td_in_urb()
118 struct urb_priv *urb_priv = urb->hcpriv; in inc_td_cnt()
120 urb_priv->num_tds_done++; in inc_td_cnt()
127 trb->link.control &= cpu_to_le32(~TRB_CHAIN); in trb_to_noop()
129 trb->generic.field[0] = 0; in trb_to_noop()
130 trb->generic.field[1] = 0; in trb_to_noop()
131 trb->generic.field[2] = 0; in trb_to_noop()
133 trb->generic.field[3] &= cpu_to_le32(TRB_CYCLE); in trb_to_noop()
134 trb->generic.field[3] |= cpu_to_le32(TRB_TYPE(noop_type)); in trb_to_noop()
142 static void next_trb(struct xhci_hcd *xhci, in next_trb() argument
148 *seg = (*seg)->next; in next_trb()
149 *trb = ((*seg)->trbs); in next_trb()
158 void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) in inc_deq() argument
163 if (ring->type == TYPE_EVENT) { in inc_deq()
164 if (!last_trb_on_seg(ring->deq_seg, ring->dequeue)) { in inc_deq()
165 ring->dequeue++; in inc_deq()
168 if (last_trb_on_ring(ring, ring->deq_seg, ring->dequeue)) in inc_deq()
169 ring->cycle_state ^= 1; in inc_deq()
170 ring->deq_seg = ring->deq_seg->next; in inc_deq()
171 ring->dequeue = ring->deq_seg->trbs; in inc_deq()
176 if (!trb_is_link(ring->dequeue)) { in inc_deq()
177 if (last_trb_on_seg(ring->deq_seg, ring->dequeue)) in inc_deq()
178 xhci_warn(xhci, "Missing link TRB at end of segment\n"); in inc_deq()
180 ring->dequeue++; in inc_deq()
183 while (trb_is_link(ring->dequeue)) { in inc_deq()
184 ring->deq_seg = ring->deq_seg->next; in inc_deq()
185 ring->dequeue = ring->deq_seg->trbs; in inc_deq()
187 if (link_trb_count++ > ring->num_segs) { 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
221 chain = le32_to_cpu(ring->enqueue->generic.field[3]) & TRB_CHAIN; in inc_enq()
223 if (last_trb_on_seg(ring->enq_seg, ring->enqueue)) { in inc_enq()
224 xhci_err(xhci, "Tried to move enqueue past ring segment\n"); in inc_enq()
228 next = ++(ring->enqueue); in inc_enq()
247 if (!(ring->type == TYPE_ISOC && in inc_enq()
248 (xhci->quirks & XHCI_AMD_0x96_HOST)) && in inc_enq()
249 !xhci_link_trb_quirk(xhci)) { in inc_enq()
250 next->link.control &= cpu_to_le32(~TRB_CHAIN); in inc_enq()
251 next->link.control |= cpu_to_le32(chain); in inc_enq()
255 next->link.control ^= cpu_to_le32(TRB_CYCLE); in inc_enq()
259 ring->cycle_state ^= 1; in inc_enq()
261 ring->enq_seg = ring->enq_seg->next; in inc_enq()
262 ring->enqueue = ring->enq_seg->trbs; in inc_enq()
263 next = ring->enqueue; in inc_enq()
265 if (link_trb_count++ > ring->num_segs) { 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
282 struct xhci_segment *enq_seg = ring->enq_seg; in xhci_num_trbs_free()
283 union xhci_trb *enq = ring->enqueue; in xhci_num_trbs_free()
290 enq_seg = enq_seg->next; in xhci_num_trbs_free()
291 enq = enq_seg->trbs; in xhci_num_trbs_free()
295 if (enq == ring->dequeue) in xhci_num_trbs_free()
296 return ring->num_segs * (TRBS_PER_SEGMENT - 1); in xhci_num_trbs_free()
299 if (ring->deq_seg == enq_seg && ring->dequeue >= enq) in xhci_num_trbs_free()
300 return free + (ring->dequeue - enq); in xhci_num_trbs_free()
301 last_on_seg = &enq_seg->trbs[TRBS_PER_SEGMENT - 1]; in xhci_num_trbs_free()
302 free += last_on_seg - enq; in xhci_num_trbs_free()
303 enq_seg = enq_seg->next; in xhci_num_trbs_free()
304 enq = enq_seg->trbs; in xhci_num_trbs_free()
305 } while (i++ <= ring->num_segs); in xhci_num_trbs_free()
316 static unsigned int xhci_ring_expansion_needed(struct xhci_hcd *xhci, struct xhci_ring *ring, in xhci_ring_expansion_needed() argument
324 enq_used = ring->enqueue - ring->enq_seg->trbs; in xhci_ring_expansion_needed()
327 trbs_past_seg = enq_used + num_trbs - (TRBS_PER_SEGMENT - 1); in xhci_ring_expansion_needed()
339 if (trb_is_link(ring->enqueue) && ring->enq_seg->next->trbs == ring->dequeue) in xhci_ring_expansion_needed()
342 new_segs = 1 + (trbs_past_seg / (TRBS_PER_SEGMENT - 1)); in xhci_ring_expansion_needed()
343 seg = ring->enq_seg; in xhci_ring_expansion_needed()
346 seg = seg->next; in xhci_ring_expansion_needed()
347 if (seg == ring->deq_seg) { in xhci_ring_expansion_needed()
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()
354 new_segs--; 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()
388 * Turn all commands on command ring with status set to "aborted" to no-op trbs.
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
397 /* Turn all aborted commands in list to no-ops, then restart */ in xhci_handle_stopped_cmd_ring()
398 list_for_each_entry(i_cmd, &xhci->cmd_list, cmd_list) { in xhci_handle_stopped_cmd_ring()
400 if (i_cmd->status != COMP_COMMAND_ABORTED) in xhci_handle_stopped_cmd_ring()
403 i_cmd->status = COMP_COMMAND_RING_STOPPED; in xhci_handle_stopped_cmd_ring()
405 xhci_dbg(xhci, "Turn aborted command %p to no-op\n", in xhci_handle_stopped_cmd_ring()
406 i_cmd->command_trb); in xhci_handle_stopped_cmd_ring()
408 trb_to_noop(i_cmd->command_trb, TRB_CMD_NOOP); in xhci_handle_stopped_cmd_ring()
412 * completion event is received for these no-op commands 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()
456 * seconds then driver handles it as if host died (-ENODEV). in xhci_abort_cmd_ring()
457 * In the future we should distinguish between -ENODEV and -ETIMEDOUT in xhci_abort_cmd_ring()
458 * and try to recover a -ETIMEDOUT with a host controller reset. 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()
495 unsigned int ep_state = ep->ep_state; 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()
525 if (!(ep->ep_state & EP_HAS_STREAMS)) { in ring_doorbell_for_active_rings()
526 if (ep->ring && !(list_empty(&ep->ring->td_list))) in ring_doorbell_for_active_rings()
527 xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0); in ring_doorbell_for_active_rings()
531 for (stream_id = 1; stream_id < ep->stream_info->num_streams; in ring_doorbell_for_active_rings()
533 struct xhci_stream_info *stream_info = ep->stream_info; in ring_doorbell_for_active_rings()
534 if (!list_empty(&stream_info->stream_rings[stream_id]->td_list)) 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
572 if (!(ep->ep_state & EP_HAS_STREAMS)) in xhci_virt_ep_to_ring()
573 return ep->ring; in xhci_virt_ep_to_ring()
575 if (!ep->stream_info) in xhci_virt_ep_to_ring()
578 if (stream_id == 0 || stream_id >= ep->stream_info->num_streams) { in xhci_virt_ep_to_ring()
579 xhci_warn(xhci, "Invalid stream_id %u request for slot_id %u ep_index %u\n", in xhci_virt_ep_to_ring()
580 stream_id, ep->vdev->slot_id, ep->ep_index); in xhci_virt_ep_to_ring()
584 return ep->stream_info->stream_rings[stream_id]; 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
618 ep = &vdev->eps[ep_index]; in xhci_get_hw_deq()
620 if (ep->ep_state & EP_HAS_STREAMS) { in xhci_get_hw_deq()
621 st_ctx = &ep->stream_info->stream_ctx_array[stream_id]; in xhci_get_hw_deq()
622 return le64_to_cpu(st_ctx->stream_ring); in xhci_get_hw_deq()
624 ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); in xhci_get_hw_deq()
625 return le64_to_cpu(ep_ctx->deq); 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()
633 struct xhci_virt_ep *ep = &dev->eps[ep_index]; 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()
651 return -ENODEV; in xhci_move_dequeue_past_td()
661 if (list_empty(&ep_ring->td_list)) { in xhci_move_dequeue_past_td()
662 new_seg = ep_ring->enq_seg; in xhci_move_dequeue_past_td()
663 new_deq = ep_ring->enqueue; in xhci_move_dequeue_past_td()
664 new_cycle = ep_ring->cycle_state; 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()
669 return -EINVAL; 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()
674 new_seg = ep_ring->deq_seg; in xhci_move_dequeue_past_td()
675 new_deq = ep_ring->dequeue; in xhci_move_dequeue_past_td()
691 if (new_deq == td->last_trb) in xhci_move_dequeue_past_td()
698 next_trb(xhci, ep_ring, &new_seg, &new_deq); in xhci_move_dequeue_past_td()
701 if (new_deq == ep->ring->dequeue) { in xhci_move_dequeue_past_td()
702 xhci_err(xhci, "Error: Failed finding new dequeue state\n"); in xhci_move_dequeue_past_td()
703 return -EINVAL; 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()
715 return -EINVAL; in xhci_move_dequeue_past_td()
718 if ((ep->ep_state & SET_DEQ_PENDING)) { 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()
721 return -EBUSY; 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()
728 return -ENOMEM; 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()
742 ep->queued_deq_seg = new_seg; in xhci_move_dequeue_past_td()
743 ep->queued_deq_ptr = new_deq; in xhci_move_dequeue_past_td()
745 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_move_dequeue_past_td()
753 ep->ep_state |= SET_DEQ_PENDING; 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
765 struct xhci_segment *seg = td->start_seg; in td_to_noop()
766 union xhci_trb *trb = td->first_trb; in td_to_noop()
772 if (flip_cycle && trb != td->first_trb && trb != td->last_trb) in td_to_noop()
773 trb->generic.field[3] ^= cpu_to_le32(TRB_CYCLE); in td_to_noop()
775 if (trb == td->last_trb) in td_to_noop()
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
789 struct urb *urb = cur_td->urb; in xhci_giveback_urb_in_irq()
790 struct urb_priv *urb_priv = urb->hcpriv; in xhci_giveback_urb_in_irq()
791 struct usb_hcd *hcd = bus_to_hcd(urb->dev->bus); in xhci_giveback_urb_in_irq()
793 if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { in xhci_giveback_urb_in_irq()
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()
810 struct xhci_segment *seg = td->bounce_seg; in xhci_unmap_td_bounce_buffer()
811 struct urb *urb = td->urb; in xhci_unmap_td_bounce_buffer()
818 dma_unmap_single(dev, seg->bounce_dma, ring->bounce_buf_len, in xhci_unmap_td_bounce_buffer()
823 dma_unmap_single(dev, seg->bounce_dma, ring->bounce_buf_len, in xhci_unmap_td_bounce_buffer()
826 if (urb->num_sgs) { in xhci_unmap_td_bounce_buffer()
827 len = sg_pcopy_from_buffer(urb->sg, urb->num_sgs, seg->bounce_buf, in xhci_unmap_td_bounce_buffer()
828 seg->bounce_len, seg->bounce_offs); in xhci_unmap_td_bounce_buffer()
829 if (len != seg->bounce_len) 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()
831 len, seg->bounce_len); in xhci_unmap_td_bounce_buffer()
833 memcpy(urb->transfer_buffer + seg->bounce_offs, seg->bounce_buf, in xhci_unmap_td_bounce_buffer()
834 seg->bounce_len); in xhci_unmap_td_bounce_buffer()
836 seg->bounce_len = 0; in xhci_unmap_td_bounce_buffer()
837 seg->bounce_offs = 0; 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
846 urb = td->urb; in xhci_td_cleanup()
849 xhci_unmap_td_bounce_buffer(xhci, ep_ring, td); in xhci_td_cleanup()
853 * length, urb->actual_length will be a very big number (since it's in xhci_td_cleanup()
856 if (urb->actual_length > urb->transfer_buffer_length) { in xhci_td_cleanup()
857 xhci_warn(xhci, "URB req %u and actual %u transfer length mismatch\n", in xhci_td_cleanup()
858 urb->transfer_buffer_length, urb->actual_length); in xhci_td_cleanup()
859 urb->actual_length = 0; in xhci_td_cleanup()
863 if (!list_empty(&td->td_list)) in xhci_td_cleanup()
864 list_del_init(&td->td_list); in xhci_td_cleanup()
866 if (!list_empty(&td->cancelled_td_list)) in xhci_td_cleanup()
867 list_del_init(&td->cancelled_td_list); in xhci_td_cleanup()
872 if ((urb->actual_length != urb->transfer_buffer_length && in xhci_td_cleanup()
873 (urb->transfer_flags & URB_SHORT_NOT_OK)) || in xhci_td_cleanup()
874 (status != 0 && !usb_endpoint_xfer_isoc(&urb->ep->desc))) in xhci_td_cleanup()
875 xhci_dbg(xhci, "Giveback URB %p, len = %d, expected = %d, status = %d\n", in xhci_td_cleanup()
876 urb, urb->actual_length, in xhci_td_cleanup()
877 urb->transfer_buffer_length, status); in xhci_td_cleanup()
880 if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) in xhci_td_cleanup()
882 xhci_giveback_urb_in_irq(xhci, td, status); in xhci_td_cleanup()
895 list_for_each_entry_safe(td, tmp_td, &ep->cancelled_td_list, in xhci_giveback_invalidated_tds()
898 ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_giveback_invalidated_tds()
900 if (td->cancel_status == TD_CLEARED) { in xhci_giveback_invalidated_tds()
901 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_giveback_invalidated_tds()
902 __func__, td->urb); 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()
906 __func__, td->urb, td->cancel_status); 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()
921 ret = -ENOMEM; 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
942 unsigned int slot_id = ep->vdev->slot_id; in xhci_handle_halted_endpoint()
949 if (ep->vdev->flags & VDEV_PORT_ERROR) in xhci_handle_halted_endpoint()
950 return -ENODEV; in xhci_handle_halted_endpoint()
954 ep->ep_state |= EP_HARD_CLEAR_TOGGLE; in xhci_handle_halted_endpoint()
955 if (td && list_empty(&td->cancelled_td_list)) { in xhci_handle_halted_endpoint()
956 list_add_tail(&td->cancelled_td_list, &ep->cancelled_td_list); in xhci_handle_halted_endpoint()
957 td->cancel_status = TD_HALTED; in xhci_handle_halted_endpoint()
961 if (ep->ep_state & EP_HALTED) { in xhci_handle_halted_endpoint()
962 xhci_dbg(xhci, "Reset ep command for ep_index %d already pending\n", in xhci_handle_halted_endpoint()
963 ep->ep_index); in xhci_handle_halted_endpoint()
967 err = xhci_reset_halted_ep(xhci, slot_id, ep->ep_index, reset_type); in xhci_handle_halted_endpoint()
971 ep->ep_state |= EP_HALTED; 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.
981 * We're also in the event handler, so we can't get re-interrupted if another
989 struct xhci_hcd *xhci; in xhci_invalidate_cancelled_tds() local
995 unsigned int slot_id = ep->vdev->slot_id; in xhci_invalidate_cancelled_tds()
998 xhci = ep->xhci; in xhci_invalidate_cancelled_tds()
1000 list_for_each_entry_safe(td, tmp_td, &ep->cancelled_td_list, cancelled_td_list) { in xhci_invalidate_cancelled_tds()
1001 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_invalidate_cancelled_tds()
1004 td->start_seg, td->first_trb), in xhci_invalidate_cancelled_tds()
1005 td->urb->stream_id, td->urb); in xhci_invalidate_cancelled_tds()
1006 list_del_init(&td->td_list); 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()
1010 td->urb, td->urb->stream_id); in xhci_invalidate_cancelled_tds()
1019 hw_deq = xhci_get_hw_deq(xhci, ep->vdev, ep->ep_index, in xhci_invalidate_cancelled_tds()
1020 td->urb->stream_id); in xhci_invalidate_cancelled_tds()
1023 if (td->cancel_status == TD_HALTED || 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()
1025 switch (td->cancel_status) { in xhci_invalidate_cancelled_tds()
1026 case TD_CLEARED: /* TD is already no-op */ in xhci_invalidate_cancelled_tds()
1031 td->cancel_status = TD_CLEARING_CACHE; in xhci_invalidate_cancelled_tds()
1034 xhci_dbg(xhci, in xhci_invalidate_cancelled_tds()
1036 td->urb->stream_id, td->urb, in xhci_invalidate_cancelled_tds()
1037 cached_td->urb->stream_id, cached_td->urb); in xhci_invalidate_cancelled_tds()
1042 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1043 td->cancel_status = TD_CLEARED; in xhci_invalidate_cancelled_tds()
1051 err = xhci_move_dequeue_past_td(xhci, slot_id, ep->ep_index, in xhci_invalidate_cancelled_tds()
1052 cached_td->urb->stream_id, in xhci_invalidate_cancelled_tds()
1055 /* Failed to move past cached td, just set cached TDs to no-op */ in xhci_invalidate_cancelled_tds()
1056 list_for_each_entry_safe(td, tmp_td, &ep->cancelled_td_list, cancelled_td_list) { in xhci_invalidate_cancelled_tds()
1057 if (td->cancel_status != TD_CLEARING_CACHE) 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()
1060 td->urb); in xhci_invalidate_cancelled_tds()
1061 td_to_noop(xhci, ring, td, false); in xhci_invalidate_cancelled_tds()
1062 td->cancel_status = TD_CLEARED; in xhci_invalidate_cancelled_tds()
1070 * Only call for non-running rings without streams.
1077 if (!list_empty(&ep->ring->td_list)) { /* Not streams compatible */ in find_halted_td()
1078 hw_deq = xhci_get_hw_deq(ep->xhci, ep->vdev, ep->ep_index, 0); in find_halted_td()
1080 td = list_first_entry(&ep->ring->td_list, struct xhci_td, td_list); in find_halted_td()
1081 if (trb_in_td(ep->xhci, td->start_seg, td->first_trb, in find_halted_td()
1082 td->last_trb, hw_deq, false)) in find_halted_td()
1095 * 2. Otherwise, we turn all the TRBs in the TD into No-op TRBs (with the chain
1098 static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, in xhci_handle_cmd_stop_ep() argument
1109 if (unlikely(TRB_TO_SUSPEND_PORT(le32_to_cpu(trb->generic.field[3])))) { in xhci_handle_cmd_stop_ep()
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()
1116 ep_index = TRB_TO_EP_INDEX(le32_to_cpu(trb->generic.field[3])); 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()
1134 * Proper error code is unknown here, it would be -EPIPE if device side in xhci_handle_cmd_stop_ep()
1135 * of enadpoit halted (aka STALL), and -EPROTO if not (transaction error) in xhci_handle_cmd_stop_ep()
1136 * We use -EPROTO, if device is stalled it should return a stall error on in xhci_handle_cmd_stop_ep()
1137 * next transfer, which then will return -EPIPE, and device side stall is 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()
1143 if (ep->ep_state & EP_HAS_STREAMS) { in xhci_handle_cmd_stop_ep()
1149 td->status = -EPROTO; in xhci_handle_cmd_stop_ep()
1152 err = xhci_handle_halted_endpoint(xhci, ep, td, reset_type); in xhci_handle_cmd_stop_ep()
1155 ep->ep_state &= ~EP_STOP_CMD_PENDING; 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()
1163 ep->ep_state &= ~EP_STOP_CMD_PENDING; 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()
1177 ep->ep_state &= ~EP_STOP_CMD_PENDING; 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
1189 list_for_each_entry_safe(cur_td, tmp, &ring->td_list, td_list) { in xhci_kill_ring_urbs()
1190 list_del_init(&cur_td->td_list); in xhci_kill_ring_urbs()
1192 if (!list_empty(&cur_td->cancelled_td_list)) in xhci_kill_ring_urbs()
1193 list_del_init(&cur_td->cancelled_td_list); in xhci_kill_ring_urbs()
1195 xhci_unmap_td_bounce_buffer(xhci, ring, cur_td); in xhci_kill_ring_urbs()
1197 inc_td_cnt(cur_td->urb); 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()
1215 if ((ep->ep_state & EP_HAS_STREAMS) || in xhci_kill_endpoint_urbs()
1216 (ep->ep_state & EP_GETTING_NO_STREAMS)) { in xhci_kill_endpoint_urbs()
1219 for (stream_id = 1; stream_id < ep->stream_info->num_streams; in xhci_kill_endpoint_urbs()
1221 ring = ep->stream_info->stream_rings[stream_id]; 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()
1231 ring = ep->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()
1240 list_for_each_entry_safe(cur_td, tmp, &ep->cancelled_td_list, in xhci_kill_endpoint_urbs()
1242 list_del_init(&cur_td->cancelled_td_list); in xhci_kill_endpoint_urbs()
1243 inc_td_cnt(cur_td->urb); 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.
1257 * lock is relased and re-acquired while giving back urb.
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
1291 dequeue_temp = ep_ring->dequeue; in update_ring_for_set_deq_completion()
1293 /* If we get two back-to-back stalls, and the first stalled transfer in update_ring_for_set_deq_completion()
1297 * the segment into la-la-land. in update_ring_for_set_deq_completion()
1299 if (trb_is_link(ep_ring->dequeue)) { in update_ring_for_set_deq_completion()
1300 ep_ring->deq_seg = ep_ring->deq_seg->next; in update_ring_for_set_deq_completion()
1301 ep_ring->dequeue = ep_ring->deq_seg->trbs; in update_ring_for_set_deq_completion()
1304 while (ep_ring->dequeue != dev->eps[ep_index].queued_deq_ptr) { in update_ring_for_set_deq_completion()
1306 ep_ring->dequeue++; in update_ring_for_set_deq_completion()
1307 if (trb_is_link(ep_ring->dequeue)) { in update_ring_for_set_deq_completion()
1308 if (ep_ring->dequeue == in update_ring_for_set_deq_completion()
1309 dev->eps[ep_index].queued_deq_ptr) in update_ring_for_set_deq_completion()
1311 ep_ring->deq_seg = ep_ring->deq_seg->next; in update_ring_for_set_deq_completion()
1312 ep_ring->dequeue = ep_ring->deq_seg->trbs; in update_ring_for_set_deq_completion()
1314 if (ep_ring->dequeue == dequeue_temp) { in update_ring_for_set_deq_completion()
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
1339 ep_index = TRB_TO_EP_INDEX(le32_to_cpu(trb->generic.field[3])); in xhci_handle_cmd_set_deq()
1340 stream_id = TRB_TO_STREAM_ID(le32_to_cpu(trb->generic.field[2])); in xhci_handle_cmd_set_deq()
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()
1369 slot_state = le32_to_cpu(slot_ctx->dev_state); 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()
1393 if (ep->ep_state & EP_HAS_STREAMS) { in xhci_handle_cmd_set_deq()
1395 &ep->stream_info->stream_ctx_array[stream_id]; in xhci_handle_cmd_set_deq()
1396 deq = le64_to_cpu(ctx->stream_ring) & SCTX_DEQ_MASK; in xhci_handle_cmd_set_deq()
1398 deq = le64_to_cpu(ep_ctx->deq) & ~EP_CTX_CYCLE_MASK; in xhci_handle_cmd_set_deq()
1400 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, in xhci_handle_cmd_set_deq()
1402 if (xhci_trb_virt_to_dma(ep->queued_deq_seg, in xhci_handle_cmd_set_deq()
1403 ep->queued_deq_ptr) == deq) { 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()
1412 ep->queued_deq_seg, ep->queued_deq_ptr); in xhci_handle_cmd_set_deq()
1416 list_for_each_entry_safe(td, tmp_td, &ep->cancelled_td_list, in xhci_handle_cmd_set_deq()
1418 ep_ring = xhci_urb_to_transfer_ring(ep->xhci, td->urb); in xhci_handle_cmd_set_deq()
1419 if (td->cancel_status == TD_CLEARING_CACHE) { in xhci_handle_cmd_set_deq()
1420 td->cancel_status = TD_CLEARED; in xhci_handle_cmd_set_deq()
1421 xhci_dbg(ep->xhci, "%s: Giveback cancelled URB %p TD\n", in xhci_handle_cmd_set_deq()
1422 __func__, td->urb); 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()
1426 __func__, td->urb, td->cancel_status); in xhci_handle_cmd_set_deq()
1430 ep->ep_state &= ~SET_DEQ_PENDING; in xhci_handle_cmd_set_deq()
1431 ep->queued_deq_seg = NULL; in xhci_handle_cmd_set_deq()
1432 ep->queued_deq_ptr = NULL; 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
1444 ep_index = TRB_TO_EP_INDEX(le32_to_cpu(trb->generic.field[3])); in xhci_handle_cmd_reset_ep()
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()
1462 ep->ep_state &= ~EP_HALTED; in xhci_handle_cmd_reset_ep()
1467 if ((le32_to_cpu(trb->generic.field[3])) & TRB_TSP) 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
1475 command->slot_id = slot_id; in xhci_handle_cmd_enable_slot()
1477 command->slot_id = 0; in xhci_handle_cmd_enable_slot()
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()
1514 ctrl_ctx = xhci_get_input_control_ctx(virt_dev->in_ctx); in xhci_handle_cmd_config_ep()
1516 xhci_warn(xhci, "Could not get input context, bad type.\n"); in xhci_handle_cmd_config_ep()
1520 add_flags = le32_to_cpu(ctrl_ctx->add_flags); in xhci_handle_cmd_config_ep()
1523 ep_index = xhci_last_valid_endpoint(add_flags) - 1; 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()
1569 NEC_FW_MAJOR(le32_to_cpu(event->status)), in xhci_handle_cmd_nec_get_fw()
1570 NEC_FW_MINOR(le32_to_cpu(event->status))); in xhci_handle_cmd_nec_get_fw()
1575 list_del(&cmd->cmd_list); in xhci_complete_del_and_free_cmd()
1577 if (cmd->completion) { in xhci_complete_del_and_free_cmd()
1578 cmd->status = status; in xhci_complete_del_and_free_cmd()
1579 complete(cmd->completion); in xhci_complete_del_and_free_cmd()
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()
1628 ep->ep_state &= ~EP_STOP_CMD_PENDING; 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
1674 unsigned int slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags)); in handle_cmd_completion()
1683 xhci_warn(xhci, "Invalid slot_id %u\n", slot_id); in handle_cmd_completion()
1687 cmd_dma = le64_to_cpu(event->cmd_trb); 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()
1708 cmd_comp_code = GET_COMP_CODE(le32_to_cpu(event->status)); 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()
1730 if (cmd->status == COMP_COMMAND_ABORTED) { in handle_cmd_completion()
1731 if (xhci->current_cmd == cmd) in handle_cmd_completion()
1732 xhci->current_cmd = NULL; in handle_cmd_completion()
1737 cmd_type = TRB_FIELD_TO_TYPE(le32_to_cpu(cmd_trb->generic.field[3])); 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()
1746 if (!cmd->completion) 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()
1756 le32_to_cpu(cmd_trb->generic.field[3]))); in handle_cmd_completion()
1757 if (!cmd->completion) in handle_cmd_completion()
1758 xhci_handle_cmd_stop_ep(xhci, slot_id, cmd_trb, in handle_cmd_completion()
1763 le32_to_cpu(cmd_trb->generic.field[3]))); in handle_cmd_completion()
1764 xhci_handle_cmd_set_deq(xhci, slot_id, cmd_trb, cmd_comp_code); in handle_cmd_completion()
1767 /* Is this an aborted command turned to NO-OP? */ in handle_cmd_completion()
1768 if (cmd->status == COMP_COMMAND_RING_STOPPED) in handle_cmd_completion()
1773 le32_to_cpu(cmd_trb->generic.field[3]))); 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()
1781 le32_to_cpu(cmd_trb->generic.field[3])); 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
1822 slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->generic.field[3])); in handle_device_notification()
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()
1832 if (udev && udev->parent) in handle_device_notification()
1833 usb_wakeup_notification(udev->parent, udev->portnum); in handle_device_notification()
1837 * Quirk hanlder for errata seen on Cavium ThunderX2 processor XHCI
1839 * As per ThunderX2errata-129 USB 2 device may come up as USB 1
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()
1856 writel(0x6F, hcd->regs + 0x1048); in xhci_cavium_reset_phy_quirk()
1858 /* De-assert the PHY reset */ in xhci_cavium_reset_phy_quirk()
1859 writel(0x7F, hcd->regs + 0x1048); in xhci_cavium_reset_phy_quirk()
1861 pll_lock_check = readl(hcd->regs + 0x1070); in xhci_cavium_reset_phy_quirk()
1862 } while (!(pll_lock_check & 0x1) && --retry_count); in xhci_cavium_reset_phy_quirk()
1865 static void handle_port_status(struct xhci_hcd *xhci, in handle_port_status() argument
1880 if (GET_COMP_CODE(le32_to_cpu(event->generic.field[2])) != COMP_SUCCESS) in handle_port_status()
1881 xhci_warn(xhci, in handle_port_status()
1884 port_id = GET_PORT_ID(le32_to_cpu(event->generic.field[0])); 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()
1894 if (!port || !port->rhub || port->hcd_portnum == DUPLICATE_ENTRY) { 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()
1908 hcd = port->rhub->hcd; in handle_port_status()
1909 bus_state = &port->rhub->bus_state; in handle_port_status()
1910 hcd_portnum = port->hcd_portnum; in handle_port_status()
1911 portsc = readl(port->addr); in handle_port_status()
1913 xhci_dbg(xhci, "Port change event, %d-%d, id %d, portsc: 0x%x\n", in handle_port_status()
1914 hcd->self.busnum, hcd_portnum + 1, port_id, portsc); in handle_port_status()
1918 if (hcd->state == HC_STATE_SUSPENDED) { in handle_port_status()
1919 xhci_dbg(xhci, "resume root hub\n"); in handle_port_status()
1923 if (hcd->speed >= HCD_USB3 && 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()
1945 bus_state->port_remote_wakeup |= 1 << hcd_portnum; in handle_port_status()
1946 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1947 usb_hcd_start_port_resume(&hcd->self, hcd_portnum); in handle_port_status()
1948 xhci_set_link_state(xhci, port, XDEV_U0); in handle_port_status()
1954 } else if (!test_bit(hcd_portnum, &bus_state->resuming_ports)) { in handle_port_status()
1955 xhci_dbg(xhci, "resume HS port %d\n", port_id); in handle_port_status()
1956 port->resume_timestamp = jiffies + in handle_port_status()
1958 set_bit(hcd_portnum, &bus_state->resuming_ports); in handle_port_status()
1961 * usb device auto-resume latency around ~40ms. in handle_port_status()
1963 set_bit(HCD_FLAG_POLL_RH, &hcd->flags); in handle_port_status()
1964 mod_timer(&hcd->rh_timer, in handle_port_status()
1965 port->resume_timestamp); in handle_port_status()
1966 usb_hcd_start_port_resume(&hcd->self, hcd_portnum); in handle_port_status()
1976 xhci_dbg(xhci, "resume SS port %d finished\n", port_id); in handle_port_status()
1977 complete(&port->u3exit_done); in handle_port_status()
1980 * U3Exit state after a host-initiated resume. If it's a device 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()
1988 if (bus_state->port_remote_wakeup & (1 << hcd_portnum)) { in handle_port_status()
1989 xhci_test_and_clear_bit(xhci, port, PORT_PLC); in handle_port_status()
1990 usb_wakeup_notification(hcd->self.root_hub, in handle_port_status()
1998 * Check to see if xhci-hub.c is waiting on RExit to U0 transition (or in handle_port_status()
2002 if (hcd->speed < HCD_USB3 && port->rexit_active) { in handle_port_status()
2003 complete(&port->rexit_done); in handle_port_status()
2004 port->rexit_active = false; in handle_port_status()
2009 if (hcd->speed < HCD_USB3) { 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()
2027 * status-change bits in the portsc register changes from 0 to 1. in handle_port_status()
2032 xhci_dbg(xhci, "%s: starting usb%d port polling.\n", in handle_port_status()
2033 __func__, hcd->self.busnum); in handle_port_status()
2034 set_bit(HCD_FLAG_POLL_RH, &hcd->flags); 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
2067 &cur_seg->trbs[TRBS_PER_SEGMENT - 1]); in trb_in_td()
2072 xhci_warn(xhci, in trb_in_td()
2073 …"Looking for event-dma %016llx trb-start %016llx trb-end %016llx seg-start %016llx seg-end %016llx… in trb_in_td()
2077 (unsigned long long)cur_seg->dma, in trb_in_td()
2091 (suspect_dma >= cur_seg->dma && in trb_in_td()
2101 cur_seg = cur_seg->next; in trb_in_td()
2102 start_dma = xhci_trb_virt_to_dma(cur_seg, &cur_seg->trbs[0]); 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
2112 * As part of low/full-speed endpoint-halt processing in xhci_clear_hub_tt_buffer()
2115 if (td->urb->dev->tt && !usb_pipeint(td->urb->pipe) && in xhci_clear_hub_tt_buffer()
2116 (td->urb->dev->tt->hub != xhci_to_hcd(xhci)->self.root_hub) && in xhci_clear_hub_tt_buffer()
2117 !(ep->ep_state & EP_CLEARING_TT)) { in xhci_clear_hub_tt_buffer()
2118 ep->ep_state |= EP_CLEARING_TT; in xhci_clear_hub_tt_buffer()
2119 td->urb->ep->hcpriv = td->urb->dev; in xhci_clear_hub_tt_buffer()
2120 if (usb_hub_clear_tt_buffer(td->urb)) in xhci_clear_hub_tt_buffer()
2121 ep->ep_state &= ~EP_CLEARING_TT; in xhci_clear_hub_tt_buffer()
2126 * cleanup the halt for a non-default control endpoint if we indicate a stall.
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
2155 * treat as not-an-error. in xhci_is_vendor_info_code()
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()
2203 if ((ep->ep_state & EP_HALTED) && in finish_td()
2204 !list_empty(&td->cancelled_td_list)) { in finish_td()
2205 xhci_dbg(xhci, "Already resolving halted ep for 0x%llx\n", in finish_td()
2207 td->start_seg, td->first_trb)); 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()
2228 if (ep->ep_index != 0) 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()
2239 ep_ring->dequeue = td->last_trb; in finish_td()
2240 ep_ring->deq_seg = td->last_trb_seg; 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
2251 union xhci_trb *trb = ring->dequeue; in sum_trb_lengths()
2252 struct xhci_segment *seg = ring->deq_seg; in sum_trb_lengths()
2254 for (sum = 0; trb != stop_trb; next_trb(xhci, ring, &seg, &trb)) { in sum_trb_lengths()
2256 sum += TRB_LEN(le32_to_cpu(trb->generic.field[2])); in sum_trb_lengths()
2264 static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_virt_ep *ep, in process_ctrl_td() argument
2273 trb_type = TRB_FIELD_TO_TYPE(le32_to_cpu(ep_trb->generic.field[3])); in process_ctrl_td()
2274 ep_ctx = xhci_get_ep_ctx(xhci, ep->vdev->out_ctx, ep->ep_index); in process_ctrl_td()
2275 trb_comp_code = GET_COMP_CODE(le32_to_cpu(event->transfer_len)); in process_ctrl_td()
2276 requested = td->urb->transfer_buffer_length; in process_ctrl_td()
2277 remaining = EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); in process_ctrl_td()
2282 xhci_warn(xhci, "WARN: Success on ctrl %s TRB without IOC set?\n", in process_ctrl_td()
2284 td->status = -ESHUTDOWN; in process_ctrl_td()
2287 td->status = 0; in process_ctrl_td()
2290 td->status = 0; in process_ctrl_td()
2294 td->urb->actual_length = remaining; in process_ctrl_td()
2296 xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n"); in process_ctrl_td()
2301 td->urb->actual_length = 0; in process_ctrl_td()
2305 td->urb->actual_length = requested - remaining; in process_ctrl_td()
2308 td->urb->actual_length = requested; 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()
2322 trb_comp_code, ep->ep_index); in process_ctrl_td()
2327 td->urb->actual_length = requested - remaining; in process_ctrl_td()
2328 else if (!td->urb_length_set) in process_ctrl_td()
2329 td->urb->actual_length = 0; in process_ctrl_td()
2343 td->urb_length_set = true; in process_ctrl_td()
2344 td->urb->actual_length = requested - remaining; in process_ctrl_td()
2345 xhci_dbg(xhci, "Waiting for status stage event\n"); in process_ctrl_td()
2350 if (!td->urb_length_set) in process_ctrl_td()
2351 td->urb->actual_length = requested; 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
2372 trb_comp_code = GET_COMP_CODE(le32_to_cpu(event->transfer_len)); in process_isoc_td()
2373 urb_priv = td->urb->hcpriv; in process_isoc_td()
2374 idx = urb_priv->num_tds_done; in process_isoc_td()
2375 frame = &td->urb->iso_frame_desc[idx]; in process_isoc_td()
2376 requested = frame->length; in process_isoc_td()
2377 remaining = EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); in process_isoc_td()
2378 ep_trb_len = TRB_LEN(le32_to_cpu(ep_trb->generic.field[2])); in process_isoc_td()
2379 short_framestatus = td->urb->transfer_flags & URB_SHORT_NOT_OK ? in process_isoc_td()
2380 -EREMOTEIO : 0; in process_isoc_td()
2385 /* Don't overwrite status if TD had an error, see xHCI 4.9.1 */ in process_isoc_td()
2386 if (td->error_mid_td) in process_isoc_td()
2389 frame->status = short_framestatus; in process_isoc_td()
2390 if (xhci->quirks & XHCI_TRUST_TX_LENGTH) in process_isoc_td()
2394 frame->status = 0; in process_isoc_td()
2397 frame->status = short_framestatus; in process_isoc_td()
2401 frame->status = -ECOMM; in process_isoc_td()
2407 frame->status = -EOVERFLOW; in process_isoc_td()
2408 if (ep_trb != td->last_trb) in process_isoc_td()
2409 td->error_mid_td = true; in process_isoc_td()
2413 frame->status = -EPROTO; in process_isoc_td()
2416 frame->status = -EPROTO; in process_isoc_td()
2418 if (ep_trb != td->last_trb) in process_isoc_td()
2419 td->error_mid_td = true; in process_isoc_td()
2426 frame->status = short_framestatus; in process_isoc_td()
2435 frame->status = -1; in process_isoc_td()
2439 if (td->urb_length_set) in process_isoc_td()
2443 frame->actual_length = sum_trb_lengths(xhci, ep->ring, ep_trb) + in process_isoc_td()
2444 ep_trb_len - remaining; in process_isoc_td()
2446 frame->actual_length = requested; in process_isoc_td()
2448 td->urb->actual_length += frame->actual_length; in process_isoc_td()
2452 if (td->error_mid_td && ep_trb != td->last_trb) { in process_isoc_td()
2453 xhci_dbg(xhci, "Error mid isoc TD, wait for final completion event\n"); in process_isoc_td()
2454 td->urb_length_set = true; 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
2468 urb_priv = td->urb->hcpriv; in skip_isoc_td()
2469 idx = urb_priv->num_tds_done; in skip_isoc_td()
2470 frame = &td->urb->iso_frame_desc[idx]; in skip_isoc_td()
2473 frame->status = -EXDEV; in skip_isoc_td()
2476 frame->actual_length = 0; in skip_isoc_td()
2479 ep->ring->dequeue = td->last_trb; in skip_isoc_td()
2480 ep->ring->deq_seg = td->last_trb_seg; in skip_isoc_td()
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()
2498 trb_comp_code = GET_COMP_CODE(le32_to_cpu(event->transfer_len)); in process_bulk_intr_td()
2499 remaining = EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); in process_bulk_intr_td()
2500 ep_trb_len = TRB_LEN(le32_to_cpu(ep_trb->generic.field[2])); in process_bulk_intr_td()
2501 requested = td->urb->transfer_buffer_length; in process_bulk_intr_td()
2505 ep->err_count = 0; in process_bulk_intr_td()
2507 if (ep_trb != td->last_trb || remaining) { 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()
2510 td->urb->ep->desc.bEndpointAddress, in process_bulk_intr_td()
2513 td->status = 0; in process_bulk_intr_td()
2516 xhci_dbg(xhci, "ep %#x - asked for %d bytes, %d bytes untransferred\n", in process_bulk_intr_td()
2517 td->urb->ep->desc.bEndpointAddress, in process_bulk_intr_td()
2519 td->status = 0; in process_bulk_intr_td()
2522 td->urb->actual_length = remaining; in process_bulk_intr_td()
2530 if (xhci->quirks & XHCI_NO_SOFT_RETRY || in process_bulk_intr_td()
2531 (ep->err_count++ > MAX_SOFT_RETRY) || in process_bulk_intr_td()
2532 le32_to_cpu(slot_ctx->tt_info) & TT_SLOT) in process_bulk_intr_td()
2535 td->status = 0; in process_bulk_intr_td()
2537 xhci_handle_halted_endpoint(xhci, ep, td, EP_SOFT_RESET); in process_bulk_intr_td()
2544 if (ep_trb == td->last_trb) in process_bulk_intr_td()
2545 td->urb->actual_length = requested - remaining; in process_bulk_intr_td()
2547 td->urb->actual_length = in process_bulk_intr_td()
2548 sum_trb_lengths(xhci, ep_ring, ep_trb) + in process_bulk_intr_td()
2549 ep_trb_len - remaining; in process_bulk_intr_td()
2552 xhci_warn(xhci, "bad transfer trb length %d in event trb\n", in process_bulk_intr_td()
2554 td->urb->actual_length = 0; 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
2577 int status = -EINPROGRESS; in handle_tx_event()
2583 slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags)); in handle_tx_event()
2584 ep_index = TRB_TO_EP_ID(le32_to_cpu(event->flags)) - 1; in handle_tx_event()
2585 trb_comp_code = GET_COMP_CODE(le32_to_cpu(event->transfer_len)); in handle_tx_event()
2586 ep_trb_dma = le64_to_cpu(event->buffer); in handle_tx_event()
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()
2613 if (ep->err_count++ > MAX_SOFT_RETRY) 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()
2631 /* Count current td numbers if ep->skip is set */ in handle_tx_event()
2632 if (ep->skip) in handle_tx_event()
2633 td_num += list_count_nodes(&ep_ring->td_list); in handle_tx_event()
2641 if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) in handle_tx_event()
2643 if (xhci->quirks & XHCI_TRUST_TX_LENGTH || in handle_tx_event()
2644 ep_ring->last_td_was_short) 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()
2660 "Stopped on No-op or Link TRB for slot %u ep %u\n", 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()
2672 status = -EPIPE; in handle_tx_event()
2675 xhci_dbg(xhci, "Split transaction error for slot %u ep %u\n", in handle_tx_event()
2677 status = -EPROTO; in handle_tx_event()
2680 xhci_dbg(xhci, "Transfer error for slot %u ep %u on endpoint\n", in handle_tx_event()
2682 status = -EPROTO; in handle_tx_event()
2685 xhci_dbg(xhci, "Babble error for slot %u ep %u on endpoint\n", in handle_tx_event()
2687 status = -EOVERFLOW; in handle_tx_event()
2691 xhci_warn(xhci, in handle_tx_event()
2694 status = -EILSEQ; in handle_tx_event()
2698 xhci_warn(xhci, in handle_tx_event()
2701 status = -ENOSR; 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()
2720 if (!list_empty(&ep_ring->td_list)) in handle_tx_event()
2721 xhci_dbg(xhci, "Underrun Event for slot %d ep %d " in handle_tx_event()
2723 TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), in handle_tx_event()
2727 xhci_dbg(xhci, "overrun event on endpoint\n"); in handle_tx_event()
2728 if (!list_empty(&ep_ring->td_list)) in handle_tx_event()
2729 xhci_dbg(xhci, "Overrun Event for slot %d ep %d " in handle_tx_event()
2731 TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), in handle_tx_event()
2741 ep->skip = true; in handle_tx_event()
2742 xhci_dbg(xhci, in handle_tx_event()
2747 ep->skip = true; in handle_tx_event()
2748 xhci_dbg(xhci, in handle_tx_event()
2755 xhci_warn(xhci, in handle_tx_event()
2758 status = -EPROTO; 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()
2775 if (list_empty(&ep_ring->td_list)) { in handle_tx_event()
2786 ep_ring->last_td_was_short)) { 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()
2788 TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), in handle_tx_event()
2791 if (ep->skip) { in handle_tx_event()
2792 ep->skip = false; 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()
2805 /* We've skipped all the TDs on the ep ring when ep->skip set */ in handle_tx_event()
2806 if (ep->skip && td_num == 0) { in handle_tx_event()
2807 ep->skip = false; 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()
2813 td = list_first_entry(&ep_ring->td_list, struct xhci_td, in handle_tx_event()
2815 if (ep->skip) in handle_tx_event()
2816 td_num--; in handle_tx_event()
2819 ep_seg = trb_in_td(xhci, ep_ring->deq_seg, ep_ring->dequeue, in handle_tx_event()
2820 td->last_trb, ep_trb_dma, false); in handle_tx_event()
2824 * is not in the current TD pointed by ep_ring->dequeue because in handle_tx_event()
2837 if (ep->skip && usb_endpoint_xfer_isoc(&td->urb->ep->desc)) { 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()
2847 ep_ring->last_td_was_short) { in handle_tx_event()
2848 ep_ring->last_td_was_short = false; 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()
2863 if (td->error_mid_td && in handle_tx_event()
2864 !list_is_last(&td->td_list, &ep_ring->td_list)) { in handle_tx_event()
2867 ep_seg = trb_in_td(xhci, td_next->start_seg, td_next->first_trb, in handle_tx_event()
2868 td_next->last_trb, ep_trb_dma, false); in handle_tx_event()
2871 xhci_dbg(xhci, "Missing TD completion event after mid TD error\n"); in handle_tx_event()
2872 ep_ring->dequeue = td->last_trb; in handle_tx_event()
2873 ep_ring->deq_seg = td->last_trb_seg; 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()
2888 ep_ring->dequeue, td->last_trb, in handle_tx_event()
2890 return -ESHUTDOWN; in handle_tx_event()
2894 ep_ring->last_td_was_short = true; in handle_tx_event()
2896 ep_ring->last_td_was_short = false; in handle_tx_event()
2898 if (ep->skip) { in handle_tx_event()
2899 xhci_dbg(xhci, in handle_tx_event()
2902 ep->skip = false; in handle_tx_event()
2905 ep_trb = &ep_seg->trbs[(ep_trb_dma - ep_seg->dma) / in handle_tx_event()
2912 * No-op TRB could trigger interrupts in a case where 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()
2928 td->status = status; in handle_tx_event()
2931 if (usb_endpoint_xfer_control(&td->urb->ep->desc)) in handle_tx_event()
2932 process_ctrl_td(xhci, ep, ep_ring, td, ep_trb, event); in handle_tx_event()
2933 else if (usb_endpoint_xfer_isoc(&td->urb->ep->desc)) 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()
2938 handling_skipped_tds = ep->skip && in handle_tx_event()
2943 * If ep->skip is set, it means there are missed tds on the in handle_tx_event()
2953 xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", in handle_tx_event()
2955 ir->event_ring->deq_seg, in handle_tx_event()
2956 ir->event_ring->dequeue), in handle_tx_event()
2957 lower_32_bits(le64_to_cpu(event->buffer)), in handle_tx_event()
2958 upper_32_bits(le64_to_cpu(event->buffer)), in handle_tx_event()
2959 le32_to_cpu(event->transfer_len), in handle_tx_event()
2960 le32_to_cpu(event->flags)); in handle_tx_event()
2961 return -ENODEV; in handle_tx_event()
2965 * This function handles all OS-owned events on the event ring. It may drop
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
2976 if (!ir || !ir->event_ring || !ir->event_ring->dequeue) { in xhci_handle_event()
2977 xhci_err(xhci, "ERROR interrupter not ready\n"); in xhci_handle_event()
2978 return -ENOMEM; in xhci_handle_event()
2981 event = ir->event_ring->dequeue; in xhci_handle_event()
2983 if ((le32_to_cpu(event->event_cmd.flags) & TRB_CYCLE) != in xhci_handle_event()
2984 ir->event_ring->cycle_state) in xhci_handle_event()
2987 trace_xhci_handle_event(ir->event_ring, &event->generic); in xhci_handle_event()
2994 trb_type = TRB_FIELD_TO_TYPE(le32_to_cpu(event->event_cmd.flags)); 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()
3016 /* Any of the above functions may drop and re-acquire the lock, so check in xhci_handle_event()
3017 * to make sure a watchdog timer didn't mark the host as non-responsive. 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()
3036 * - When all events have finished
3037 * - To avoid "Event Ring Full Error" condition
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()
3049 if (event_ring_deq != ir->event_ring->dequeue) { in xhci_update_erst_dequeue()
3050 deq = xhci_trb_virt_to_dma(ir->event_ring->deq_seg, in xhci_update_erst_dequeue()
3051 ir->event_ring->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()
3062 temp_64 = ir->event_ring->deq_seg->num & ERST_DESI_MASK; 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()
3113 * so we can receive interrupts from other MSI-X interrupters. in xhci_irq()
3117 writel(status, &xhci->op_regs->status); in xhci_irq()
3120 ir = xhci->interrupters[0]; in xhci_irq()
3121 if (!hcd->msi_enabled) { in xhci_irq()
3123 irq_pending = readl(&ir->ir_set->irq_pending); in xhci_irq()
3125 writel(irq_pending, &ir->ir_set->irq_pending); 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()
3137 &ir->ir_set->erst_dequeue); in xhci_irq()
3142 event_ring_deq = ir->event_ring->dequeue; 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()
3150 event_ring_deq = ir->event_ring->dequeue; in xhci_irq()
3152 /* ring is half-full, force isoc trbs to interrupt more often */ 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()
3177 * Generic function for queueing a TRB on a ring.
3183 static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, in queue_trb() argument
3189 trb = &ring->enqueue->generic; in queue_trb()
3190 trb->field[0] = cpu_to_le32(field1); in queue_trb()
3191 trb->field[1] = cpu_to_le32(field2); in queue_trb()
3192 trb->field[2] = cpu_to_le32(field3); in queue_trb()
3195 trb->field[3] = cpu_to_le32(field4); in queue_trb()
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()
3220 return -ENOENT; in prepare_ring()
3222 xhci_warn(xhci, "WARN waiting for error on ep to be cleared\n"); in prepare_ring()
3224 /* XXX not sure if this should be -ENOENT or not */ in prepare_ring()
3225 return -EINVAL; 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()
3238 return -EINVAL; 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()
3245 return -ENOMEM; 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()
3253 return -ENOMEM; in prepare_ring()
3257 while (trb_is_link(ep_ring->enqueue)) { in prepare_ring()
3261 if (!xhci_link_trb_quirk(xhci) && in prepare_ring()
3262 !(ep_ring->type == TYPE_ISOC && in prepare_ring()
3263 (xhci->quirks & XHCI_AMD_0x96_HOST))) in prepare_ring()
3264 ep_ring->enqueue->link.control &= in prepare_ring()
3267 ep_ring->enqueue->link.control |= in prepare_ring()
3271 ep_ring->enqueue->link.control ^= cpu_to_le32(TRB_CYCLE); in prepare_ring()
3274 if (link_trb_toggles_cycle(ep_ring->enqueue)) in prepare_ring()
3275 ep_ring->cycle_state ^= 1; in prepare_ring()
3277 ep_ring->enq_seg = ep_ring->enq_seg->next; in prepare_ring()
3278 ep_ring->enqueue = ep_ring->enq_seg->trbs; in prepare_ring()
3281 if (link_trb_count++ > ep_ring->num_segs) { in prepare_ring()
3282 xhci_warn(xhci, "Ring is an endless link TRB loop\n"); in prepare_ring()
3283 return -EINVAL; in prepare_ring()
3287 if (last_trb_on_seg(ep_ring->enq_seg, ep_ring->enqueue)) { in prepare_ring()
3288 xhci_warn(xhci, "Missing link TRB at end of ring segment\n"); in prepare_ring()
3289 return -EINVAL; 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()
3315 return -EINVAL; in prepare_transfer()
3318 ret = prepare_ring(xhci, ep_ring, GET_EP_CTX_STATE(ep_ctx), in prepare_transfer()
3323 urb_priv = urb->hcpriv; in prepare_transfer()
3324 td = &urb_priv->td[td_index]; in prepare_transfer()
3326 INIT_LIST_HEAD(&td->td_list); in prepare_transfer()
3327 INIT_LIST_HEAD(&td->cancelled_td_list); in prepare_transfer()
3330 ret = usb_hcd_link_urb_to_ep(bus_to_hcd(urb->dev->bus), urb); in prepare_transfer()
3335 td->urb = urb; in prepare_transfer()
3337 list_add_tail(&td->td_list, &ep_ring->td_list); in prepare_transfer()
3338 td->start_seg = ep_ring->enq_seg; in prepare_transfer()
3339 td->first_trb = ep_ring->enqueue; in prepare_transfer()
3348 num_trbs = DIV_ROUND_UP(len + (addr & (TRB_MAX_BUFF_SIZE - 1)), in count_trbs()
3358 return count_trbs(urb->transfer_dma, urb->transfer_buffer_length); in count_trbs_needed()
3366 full_len = urb->transfer_buffer_length; in count_sg_trbs_needed()
3368 for_each_sg(urb->sg, sg, urb->num_mapped_sgs, i) { in count_sg_trbs_needed()
3372 full_len -= len; in count_sg_trbs_needed()
3384 addr = (u64) (urb->transfer_dma + urb->iso_frame_desc[i].offset); in count_isoc_trbs_needed()
3385 len = urb->iso_frame_desc[i].length; in count_isoc_trbs_needed()
3392 if (unlikely(running_total != urb->transfer_buffer_length)) in check_trb_math()
3393 dev_err(&urb->dev->dev, "%s - ep %#x - Miscalculated tx length, " in check_trb_math()
3396 urb->ep->desc.bEndpointAddress, in check_trb_math()
3398 urb->transfer_buffer_length, in check_trb_math()
3399 urb->transfer_buffer_length); in check_trb_math()
3402 static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, in giveback_first_trb() argument
3412 start_trb->field[3] |= cpu_to_le32(start_cycle); in giveback_first_trb()
3414 start_trb->field[3] &= cpu_to_le32(~TRB_CYCLE); in giveback_first_trb()
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
3424 xhci_interval = EP_INTERVAL_TO_UFRAMES(le32_to_cpu(ep_ctx->ep_info)); in check_interval()
3425 ep_interval = urb->interval; in check_interval()
3428 if (urb->dev->speed == USB_SPEED_LOW || in check_interval()
3429 urb->dev->speed == USB_SPEED_FULL) in check_interval()
3436 dev_dbg_ratelimited(&urb->dev->dev, in check_interval()
3437 "Driver uses different interval (%d microframe%s) than xHCI (%d microframe%s)\n", in check_interval()
3440 urb->interval = xhci_interval; in check_interval()
3442 if (urb->dev->speed == USB_SPEED_LOW || in check_interval()
3443 urb->dev->speed == USB_SPEED_FULL) in check_interval()
3444 urb->interval /= 8; 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
3475 * TD size = total_packet_count - packets_transferred
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()
3493 return ((td_total_len - transferred) >> 10); in xhci_td_remainder()
3495 /* One TRB with a zero-length data packet. */ 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()
3504 maxp = usb_endpoint_maxp(&urb->ep->desc); in xhci_td_remainder()
3508 return (total_packet_count - ((transferred + trb_buff_len) / maxp)); 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()
3521 max_pkt = usb_endpoint_maxp(&urb->ep->desc); in xhci_align_td()
3528 xhci_dbg(xhci, "Unaligned %d bytes, buff len %d\n", in xhci_align_td()
3533 *trb_buff_len -= unalign; in xhci_align_td()
3534 xhci_dbg(xhci, "split align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3543 new_buff_len = max_pkt - (enqd_len % max_pkt); in xhci_align_td()
3545 if (new_buff_len > (urb->transfer_buffer_length - enqd_len)) in xhci_align_td()
3546 new_buff_len = (urb->transfer_buffer_length - enqd_len); in xhci_align_td()
3550 if (urb->num_sgs) { in xhci_align_td()
3551 len = sg_pcopy_to_buffer(urb->sg, urb->num_sgs, in xhci_align_td()
3552 seg->bounce_buf, new_buff_len, enqd_len); in xhci_align_td()
3554 xhci_warn(xhci, "WARN Wrong bounce buffer write length: %zu != %d\n", in xhci_align_td()
3557 memcpy(seg->bounce_buf, urb->transfer_buffer + enqd_len, new_buff_len); in xhci_align_td()
3560 seg->bounce_dma = dma_map_single(dev, seg->bounce_buf, in xhci_align_td()
3563 seg->bounce_dma = dma_map_single(dev, seg->bounce_buf, in xhci_align_td()
3567 if (dma_mapping_error(dev, seg->bounce_dma)) { in xhci_align_td()
3569 xhci_warn(xhci, "Failed mapping bounce buffer, not aligning\n"); in xhci_align_td()
3573 seg->bounce_len = new_buff_len; in xhci_align_td()
3574 seg->bounce_offs = enqd_len; in xhci_align_td()
3576 xhci_dbg(xhci, "Bounce align, new buff len %d\n", *trb_buff_len); in xhci_align_td()
3581 /* This is very similar to what ehci-q.c qtd_fill() does */
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()
3602 return -EINVAL; in xhci_queue_bulk_tx()
3604 full_len = urb->transfer_buffer_length; in xhci_queue_bulk_tx()
3606 if (urb->num_sgs && !(urb->transfer_flags & URB_DMA_MAP_SINGLE)) { in xhci_queue_bulk_tx()
3607 num_sgs = urb->num_mapped_sgs; in xhci_queue_bulk_tx()
3608 sg = urb->sg; in xhci_queue_bulk_tx()
3614 addr = (u64) urb->transfer_dma; in xhci_queue_bulk_tx()
3617 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3618 ep_index, urb->stream_id, in xhci_queue_bulk_tx()
3623 urb_priv = urb->hcpriv; in xhci_queue_bulk_tx()
3625 /* Deal with URB_ZERO_PACKET - need one more td/trb */ in xhci_queue_bulk_tx()
3626 if (urb->transfer_flags & URB_ZERO_PACKET && urb_priv->num_tds > 1) in xhci_queue_bulk_tx()
3629 td = &urb_priv->td[0]; in xhci_queue_bulk_tx()
3636 start_trb = &ring->enqueue->generic; in xhci_queue_bulk_tx()
3637 start_cycle = ring->cycle_state; in xhci_queue_bulk_tx()
3640 /* Queue the TRBs, even if they are zero-length */ in xhci_queue_bulk_tx()
3650 trb_buff_len = full_len - enqd_len; in xhci_queue_bulk_tx()
3658 field |= ring->cycle_state; in xhci_queue_bulk_tx()
3665 if (trb_is_link(ring->enqueue + 1)) { in xhci_queue_bulk_tx()
3666 if (xhci_align_td(xhci, urb, enqd_len, in xhci_queue_bulk_tx()
3668 ring->enq_seg)) { in xhci_queue_bulk_tx()
3669 send_addr = ring->enq_seg->bounce_dma; in xhci_queue_bulk_tx()
3671 td->bounce_seg = ring->enq_seg; in xhci_queue_bulk_tx()
3679 td->last_trb = ring->enqueue; in xhci_queue_bulk_tx()
3680 td->last_trb_seg = ring->enq_seg; in xhci_queue_bulk_tx()
3682 memcpy(&send_addr, urb->transfer_buffer, 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()
3706 td->num_trbs++; in xhci_queue_bulk_tx()
3712 --num_sgs; in xhci_queue_bulk_tx()
3713 sent_len -= block_len; in xhci_queue_bulk_tx()
3721 block_len -= sent_len; in xhci_queue_bulk_tx()
3726 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_bulk_tx()
3727 ep_index, urb->stream_id, in xhci_queue_bulk_tx()
3729 urb_priv->td[1].last_trb = ring->enqueue; in xhci_queue_bulk_tx()
3730 urb_priv->td[1].last_trb_seg = ring->enq_seg; in xhci_queue_bulk_tx()
3731 field = TRB_TYPE(TRB_NORMAL) | ring->cycle_state | TRB_IOC; in xhci_queue_bulk_tx()
3732 queue_trb(xhci, ring, 0, 0, 0, TRB_INTR_TARGET(0), field); in xhci_queue_bulk_tx()
3733 urb_priv->td[1].num_trbs++; 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()
3758 return -EINVAL; in xhci_queue_ctrl_tx()
3764 if (!urb->setup_packet) in xhci_queue_ctrl_tx()
3765 return -EINVAL; in xhci_queue_ctrl_tx()
3774 if (urb->transfer_buffer_length > 0) in xhci_queue_ctrl_tx()
3776 ret = prepare_transfer(xhci, xhci->devs[slot_id], in xhci_queue_ctrl_tx()
3777 ep_index, urb->stream_id, in xhci_queue_ctrl_tx()
3782 urb_priv = urb->hcpriv; in xhci_queue_ctrl_tx()
3783 td = &urb_priv->td[0]; in xhci_queue_ctrl_tx()
3784 td->num_trbs = num_trbs; in xhci_queue_ctrl_tx()
3791 start_trb = &ep_ring->enqueue->generic; in xhci_queue_ctrl_tx()
3792 start_cycle = ep_ring->cycle_state; in xhci_queue_ctrl_tx()
3794 /* Queue setup TRB - see section 6.4.1.2.1 */ in xhci_queue_ctrl_tx()
3796 setup = (struct usb_ctrlrequest *) urb->setup_packet; 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()
3804 if (urb->transfer_buffer_length > 0) { in xhci_queue_ctrl_tx()
3805 if (setup->bRequestType & USB_DIR_IN) in xhci_queue_ctrl_tx()
3812 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3813 setup->bRequestType | setup->bRequest << 8 | le16_to_cpu(setup->wValue) << 16, in xhci_queue_ctrl_tx()
3814 le16_to_cpu(setup->wIndex) | le16_to_cpu(setup->wLength) << 16, in xhci_queue_ctrl_tx()
3826 if (urb->transfer_buffer_length > 0) { in xhci_queue_ctrl_tx()
3831 memcpy(&addr, urb->transfer_buffer, in xhci_queue_ctrl_tx()
3832 urb->transfer_buffer_length); in xhci_queue_ctrl_tx()
3836 addr = (u64) urb->transfer_dma; in xhci_queue_ctrl_tx()
3839 remainder = xhci_td_remainder(xhci, 0, in xhci_queue_ctrl_tx()
3840 urb->transfer_buffer_length, in xhci_queue_ctrl_tx()
3841 urb->transfer_buffer_length, in xhci_queue_ctrl_tx()
3843 length_field = TRB_LEN(urb->transfer_buffer_length) | in xhci_queue_ctrl_tx()
3846 if (setup->bRequestType & USB_DIR_IN) in xhci_queue_ctrl_tx()
3848 queue_trb(xhci, ep_ring, true, in xhci_queue_ctrl_tx()
3852 field | ep_ring->cycle_state); in xhci_queue_ctrl_tx()
3856 td->last_trb = ep_ring->enqueue; in xhci_queue_ctrl_tx()
3857 td->last_trb_seg = ep_ring->enq_seg; in xhci_queue_ctrl_tx()
3859 /* Queue status TRB - see Table 7 and sections 4.11.2.2 and 6.4.1.2.3 */ in xhci_queue_ctrl_tx()
3861 if (urb->transfer_buffer_length > 0 && setup->bRequestType & USB_DIR_IN) in xhci_queue_ctrl_tx()
3865 queue_trb(xhci, ep_ring, false, in xhci_queue_ctrl_tx()
3870 field | TRB_IOC | TRB_TYPE(TRB_STATUS) | ep_ring->cycle_state); 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()
3893 max_burst = urb->ep->ss_ep_comp.bMaxBurst; in xhci_get_burst_count()
3894 return DIV_ROUND_UP(total_packet_count, max_burst + 1) - 1; 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()
3914 if (urb->dev->speed >= USB_SPEED_SUPER) { in xhci_get_last_burst_packet_count()
3916 max_burst = urb->ep->ss_ep_comp.bMaxBurst; in xhci_get_last_burst_packet_count()
3919 * number of packets, but the TLBPC field is zero-based. in xhci_get_last_burst_packet_count()
3923 return residue - 1; in xhci_get_last_burst_packet_count()
3927 return total_packet_count - 1; 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
3943 if (urb->dev->speed == USB_SPEED_LOW || in xhci_get_isoc_frame_id()
3944 urb->dev->speed == USB_SPEED_FULL) in xhci_get_isoc_frame_id()
3945 start_frame = urb->start_frame + index * urb->interval; in xhci_get_isoc_frame_id()
3947 start_frame = (urb->start_frame + index * urb->interval) >> 3; in xhci_get_isoc_frame_id()
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()
3989 ret = -EINVAL; in xhci_get_isoc_frame_id()
3993 ret = -EINVAL; in xhci_get_isoc_frame_id()
3995 ret = -EINVAL; in xhci_get_isoc_frame_id()
3999 if (ret == -EINVAL || start_frame == start_frame_id) { in xhci_get_isoc_frame_id()
4001 if (urb->dev->speed == USB_SPEED_LOW || in xhci_get_isoc_frame_id()
4002 urb->dev->speed == USB_SPEED_FULL) in xhci_get_isoc_frame_id()
4003 urb->start_frame = start_frame; in xhci_get_isoc_frame_id()
4005 urb->start_frame = start_frame << 3; 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()
4027 if (i == num_tds - 1) 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()
4061 num_tds = urb->number_of_packets; in xhci_queue_isoc_tx()
4063 xhci_dbg(xhci, "Isoc URB with zero packets?\n"); in xhci_queue_isoc_tx()
4064 return -EINVAL; in xhci_queue_isoc_tx()
4066 start_addr = (u64) urb->transfer_dma; in xhci_queue_isoc_tx()
4067 start_trb = &ep_ring->enqueue->generic; in xhci_queue_isoc_tx()
4068 start_cycle = ep_ring->cycle_state; in xhci_queue_isoc_tx()
4070 urb_priv = urb->hcpriv; in xhci_queue_isoc_tx()
4071 /* Queue the TRBs for each TD, even if they are zero-length */ in xhci_queue_isoc_tx()
4079 addr = start_addr + urb->iso_frame_desc[i].offset; in xhci_queue_isoc_tx()
4080 td_len = urb->iso_frame_desc[i].length; in xhci_queue_isoc_tx()
4082 max_pkt = usb_endpoint_maxp(&urb->ep->desc); in xhci_queue_isoc_tx()
4085 /* A zero-length transfer still involves at least one packet. */ 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()
4095 urb->stream_id, trbs_per_td, urb, i, mem_flags); in xhci_queue_isoc_tx()
4101 td = &urb_priv->td[i]; in xhci_queue_isoc_tx()
4102 td->num_trbs = trbs_per_td; in xhci_queue_isoc_tx()
4105 if (!(urb->transfer_flags & URB_ISO_ASAP) && 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()
4119 (i ? ep_ring->cycle_state : !start_cycle); 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()
4122 if (!xep->use_extended_tbc) in xhci_queue_isoc_tx()
4132 ep_ring->cycle_state; in xhci_queue_isoc_tx()
4139 if (j < trbs_per_td - 1) { in xhci_queue_isoc_tx()
4144 td->last_trb = ep_ring->enqueue; in xhci_queue_isoc_tx()
4145 td->last_trb_seg = ep_ring->enq_seg; 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()
4164 if (first_trb && xep->use_extended_tbc) in xhci_queue_isoc_tx()
4170 queue_trb(xhci, ep_ring, more_trbs_coming, in xhci_queue_isoc_tx()
4178 td_remain_len -= trb_buff_len; in xhci_queue_isoc_tx()
4183 xhci_err(xhci, "ISOC TD length unmatch\n"); in xhci_queue_isoc_tx()
4184 ret = -EINVAL; in xhci_queue_isoc_tx()
4190 if (HCC_CFC(xhci->hcc_params)) in xhci_queue_isoc_tx()
4191 xep->next_frame_id = urb->start_frame + num_tds * urb->interval; 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()
4205 for (i--; i >= 0; i--) in xhci_queue_isoc_tx()
4206 list_del_init(&urb_priv->td[i].td_list); in xhci_queue_isoc_tx()
4209 * into No-ops with a software-owned cycle bit. That way the hardware in xhci_queue_isoc_tx()
4211 * overwrite them. td->first_trb and td->start_seg are already set. in xhci_queue_isoc_tx()
4213 urb_priv->td[0].last_trb = ep_ring->enqueue; in xhci_queue_isoc_tx()
4215 td_to_noop(xhci, ep_ring, &urb_priv->td[0], true); in xhci_queue_isoc_tx()
4218 ep_ring->enqueue = urb_priv->td[0].first_trb; in xhci_queue_isoc_tx()
4219 ep_ring->enq_seg = urb_priv->td[0].start_seg; in xhci_queue_isoc_tx()
4220 ep_ring->cycle_state = start_cycle; in xhci_queue_isoc_tx()
4221 usb_hcd_unlink_urb_from_ep(bus_to_hcd(urb->dev->bus), urb); in xhci_queue_isoc_tx()
4228 * Update interval as xhci_queue_intr_tx does. Use xhci frame_index to
4229 * update urb->start_frame if URB_ISO_ASAP is set in transfer_flags or
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()
4246 ep_ring = xdev->eps[ep_index].ring; 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()
4250 num_tds = urb->number_of_packets; 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()
4268 /* Calculate the start frame and put it in urb->start_frame. */ 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()
4271 urb->start_frame = xep->next_frame_id; 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()
4292 if (urb->dev->speed == USB_SPEED_LOW || in xhci_queue_isoc_tx_prepare()
4293 urb->dev->speed == USB_SPEED_FULL) { in xhci_queue_isoc_tx_prepare()
4294 start_frame = roundup(start_frame, urb->interval << 3); in xhci_queue_isoc_tx_prepare()
4295 urb->start_frame = start_frame >> 3; in xhci_queue_isoc_tx_prepare()
4297 start_frame = roundup(start_frame, urb->interval); in xhci_queue_isoc_tx_prepare()
4298 urb->start_frame = start_frame; 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()
4308 /* Generic function for queueing a command TRB on the command ring.
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()
4326 return -ESHUTDOWN; 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()