Lines Matching +full:has +full:- +full:transaction +full:- +full:translator
1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2001-2004 by David Brownell
4 * Copyright (c) 2003 Michal Sojka, for high-speed iso transfers
7 /* this file is part of ehci-hcd.c */
9 /*-------------------------------------------------------------------------*/
12 * EHCI scheduled transaction support: interrupt, iso, split iso
16 * with the "asynchronous" transaction support (control/bulk transfers).
21 * pre-calculated schedule data to make appending to the queue be quick.
27 * periodic_next_shadow - return "next" pointer on shadow list
37 return &periodic->qh->qh_next; in periodic_next_shadow()
39 return &periodic->fstn->fstn_next; in periodic_next_shadow()
41 return &periodic->itd->itd_next; in periodic_next_shadow()
44 return &periodic->sitd->sitd_next; in periodic_next_shadow()
55 return &periodic->qh->hw->hw_next; in shadow_next_periodic()
58 return periodic->hw_next; in shadow_next_periodic()
62 /* caller must hold ehci->lock */
65 union ehci_shadow *prev_p = &ehci->pshadow[frame]; in periodic_unlink()
66 __hc32 *hw_p = &ehci->periodic[frame]; in periodic_unlink()
87 if (!ehci->use_dummy_qh || in periodic_unlink()
93 *hw_p = cpu_to_hc32(ehci, ehci->dummy->qh_dma); in periodic_unlink()
96 /*-------------------------------------------------------------------------*/
103 struct usb_tt *utt = udev->tt; in find_tt()
117 if (utt->multi) { in find_tt()
118 tt_index = utt->hcpriv; in find_tt()
120 tt_index = kcalloc(utt->hub->maxchild, in find_tt()
124 return ERR_PTR(-ENOMEM); in find_tt()
125 utt->hcpriv = tt_index; in find_tt()
128 port = udev->ttport - 1; in find_tt()
132 ptt = (struct ehci_tt **) &utt->hcpriv; in find_tt()
138 hcd_to_ehci(bus_to_hcd(udev->bus)); in find_tt()
143 utt->hcpriv = NULL; in find_tt()
146 return ERR_PTR(-ENOMEM); in find_tt()
148 list_add_tail(&tt->tt_list, &ehci->tt_list); in find_tt()
149 INIT_LIST_HEAD(&tt->ps_list); in find_tt()
150 tt->usb_tt = utt; in find_tt()
151 tt->tt_port = port; in find_tt()
161 struct usb_tt *utt = udev->tt; in drop_tt()
165 if (!utt || !utt->hcpriv) in drop_tt()
169 if (utt->multi) { in drop_tt()
170 tt_index = utt->hcpriv; in drop_tt()
171 ptt = &tt_index[udev->ttport - 1]; in drop_tt()
174 for (i = 0; i < utt->hub->maxchild; ++i) in drop_tt()
178 ptt = (struct ehci_tt **) &utt->hcpriv; in drop_tt()
182 if (!tt || !list_empty(&tt->ps_list)) in drop_tt()
185 list_del(&tt->tt_list); in drop_tt()
189 utt->hcpriv = NULL; in drop_tt()
197 dev_dbg(&ps->udev->dev, in bandwidth_dbg()
199 ps->ep->desc.bEndpointAddress, in bandwidth_dbg()
201 (ps->bw_phase << 3) + ps->phase_uf, ps->bw_uperiod, in bandwidth_dbg()
202 ps->phase, ps->phase_uf, ps->period, in bandwidth_dbg()
203 ps->usecs, ps->c_usecs, ps->cs_mask); in bandwidth_dbg()
211 int usecs = qh->ps.usecs; in reserve_release_intr_bandwidth()
212 int c_usecs = qh->ps.c_usecs; in reserve_release_intr_bandwidth()
213 int tt_usecs = qh->ps.tt_usecs; in reserve_release_intr_bandwidth()
216 if (qh->ps.phase == NO_FRAME) /* Bandwidth wasn't reserved */ in reserve_release_intr_bandwidth()
218 start_uf = qh->ps.bw_phase << 3; in reserve_release_intr_bandwidth()
220 bandwidth_dbg(ehci, sign, "intr", &qh->ps); in reserve_release_intr_bandwidth()
223 usecs = -usecs; in reserve_release_intr_bandwidth()
224 c_usecs = -c_usecs; in reserve_release_intr_bandwidth()
225 tt_usecs = -tt_usecs; in reserve_release_intr_bandwidth()
228 /* Entire transaction (high speed) or start-split (full/low speed) */ in reserve_release_intr_bandwidth()
229 for (i = start_uf + qh->ps.phase_uf; i < EHCI_BANDWIDTH_SIZE; in reserve_release_intr_bandwidth()
230 i += qh->ps.bw_uperiod) in reserve_release_intr_bandwidth()
231 ehci->bandwidth[i] += usecs; in reserve_release_intr_bandwidth()
233 /* Complete-split (full/low speed) */ in reserve_release_intr_bandwidth()
234 if (qh->ps.c_usecs) { in reserve_release_intr_bandwidth()
237 i += qh->ps.bw_uperiod) { in reserve_release_intr_bandwidth()
239 if (qh->ps.cs_mask & m) in reserve_release_intr_bandwidth()
240 ehci->bandwidth[i+j] += c_usecs; in reserve_release_intr_bandwidth()
247 tt = find_tt(qh->ps.udev); in reserve_release_intr_bandwidth()
249 list_add_tail(&qh->ps.ps_list, &tt->ps_list); in reserve_release_intr_bandwidth()
251 list_del(&qh->ps.ps_list); in reserve_release_intr_bandwidth()
254 i += qh->ps.bw_period) in reserve_release_intr_bandwidth()
255 tt->bandwidth[i] += tt_usecs; in reserve_release_intr_bandwidth()
259 /*-------------------------------------------------------------------------*/
273 list_for_each_entry(ps, &tt->ps_list, ps_list) { in compute_tt_budget()
274 for (uframe = ps->bw_phase << 3; uframe < EHCI_BANDWIDTH_SIZE; in compute_tt_budget()
275 uframe += ps->bw_uperiod) { in compute_tt_budget()
277 x = ps->tt_usecs; in compute_tt_budget()
280 for (uf = ps->phase_uf; uf < 8; ++uf) { in compute_tt_budget()
289 x -= 125; in compute_tt_budget()
298 if (!dev1->tt || !dev2->tt) in same_tt()
300 if (dev1->tt != dev2->tt) in same_tt()
302 if (dev1->tt->multi) in same_tt()
303 return dev1->ttport == dev2->ttport; in same_tt()
320 tt_usecs[i+1] += tt_usecs[i] - max_tt_usecs[i]; in carryover_tt_bandwidth()
334 * should be executed in "B-frame" terms, which is the same as the
335 * highspeed ssplit's uframe (which is in "H-frame" terms). For example
336 * a ssplit in "H-frame" 0 causes a transfer in "B-frame" 0.
340 * has the specified bandwidth available, according to rules listed
341 * in USB 2.0 spec section 11.18.1 fig 11-60.
355 unsigned period = ps->bw_period; in tt_available()
356 unsigned usecs = ps->tt_usecs; in tt_available()
361 for (frame &= period - 1; frame < EHCI_BANDWIDTH_FRAMES; in tt_available()
366 if (tt->bandwidth[frame] + usecs > 900) in tt_available()
371 tt_usecs[i] = ehci->tt_budget[uf]; in tt_available()
403 /* return true iff the device's transaction translator is available
422 for (; frame < ehci->periodic_size; frame += period) { in tt_no_collision()
427 here = ehci->pshadow[frame]; in tt_no_collision()
428 type = Q_NEXT_TYPE(ehci, ehci->periodic[frame]); in tt_no_collision()
432 type = Q_NEXT_TYPE(ehci, here.itd->hw_next); in tt_no_collision()
433 here = here.itd->itd_next; in tt_no_collision()
436 hw = here.qh->hw; in tt_no_collision()
437 if (same_tt(dev, here.qh->ps.udev)) { in tt_no_collision()
441 hw->hw_info2); in tt_no_collision()
447 type = Q_NEXT_TYPE(ehci, hw->hw_next); in tt_no_collision()
448 here = here.qh->qh_next; in tt_no_collision()
451 if (same_tt(dev, here.sitd->urb->dev)) { in tt_no_collision()
455 ->hw_uframe); in tt_no_collision()
461 type = Q_NEXT_TYPE(ehci, here.sitd->hw_next); in tt_no_collision()
462 here = here.sitd->sitd_next; in tt_no_collision()
482 /*-------------------------------------------------------------------------*/
486 if (ehci->periodic_count++) in enable_periodic()
490 ehci->enabled_hrtimer_events &= ~BIT(EHCI_HRTIMER_DISABLE_PERIODIC); in enable_periodic()
499 if (--ehci->periodic_count) in disable_periodic()
506 /*-------------------------------------------------------------------------*/
517 unsigned period = qh->ps.period; in qh_link_periodic()
519 dev_dbg(&qh->ps.udev->dev, in qh_link_periodic()
520 "link qh%d-%04x/%p start %d [%d/%d us]\n", in qh_link_periodic()
521 period, hc32_to_cpup(ehci, &qh->hw->hw_info2) in qh_link_periodic()
523 qh, qh->ps.phase, qh->ps.usecs, qh->ps.c_usecs); in qh_link_periodic()
529 for (i = qh->ps.phase; i < ehci->periodic_size; i += period) { in qh_link_periodic()
530 union ehci_shadow *prev = &ehci->pshadow[i]; in qh_link_periodic()
531 __hc32 *hw_p = &ehci->periodic[i]; in qh_link_periodic()
545 /* sorting each branch by period (slow-->fast) in qh_link_periodic()
549 if (qh->ps.period > here.qh->ps.period) in qh_link_periodic()
551 prev = &here.qh->qh_next; in qh_link_periodic()
552 hw_p = &here.qh->hw->hw_next; in qh_link_periodic()
557 qh->qh_next = here; in qh_link_periodic()
559 qh->hw->hw_next = *hw_p; in qh_link_periodic()
561 prev->qh = qh; in qh_link_periodic()
562 *hw_p = QH_NEXT(ehci, qh->qh_dma); in qh_link_periodic()
565 qh->qh_state = QH_STATE_LINKED; in qh_link_periodic()
566 qh->xacterrs = 0; in qh_link_periodic()
567 qh->unlink_reason = 0; in qh_link_periodic()
569 /* update per-qh bandwidth for debugfs */ in qh_link_periodic()
570 ehci_to_hcd(ehci)->self.bandwidth_allocated += qh->ps.bw_period in qh_link_periodic()
571 ? ((qh->ps.usecs + qh->ps.c_usecs) / qh->ps.bw_period) in qh_link_periodic()
572 : (qh->ps.usecs * 8); in qh_link_periodic()
574 list_add(&qh->intr_node, &ehci->intr_qh_list); in qh_link_periodic()
577 ++ehci->intr_count; in qh_link_periodic()
587 * If qh is for a low/full-speed device, simply unlinking it in qh_unlink_periodic()
588 * could interfere with an ongoing split transaction. To unlink in qh_unlink_periodic()
602 period = qh->ps.period ? : 1; in qh_unlink_periodic()
604 for (i = qh->ps.phase; i < ehci->periodic_size; i += period) in qh_unlink_periodic()
607 /* update per-qh bandwidth for debugfs */ in qh_unlink_periodic()
608 ehci_to_hcd(ehci)->self.bandwidth_allocated -= qh->ps.bw_period in qh_unlink_periodic()
609 ? ((qh->ps.usecs + qh->ps.c_usecs) / qh->ps.bw_period) in qh_unlink_periodic()
610 : (qh->ps.usecs * 8); in qh_unlink_periodic()
612 dev_dbg(&qh->ps.udev->dev, in qh_unlink_periodic()
613 "unlink qh%d-%04x/%p start %d [%d/%d us]\n", in qh_unlink_periodic()
614 qh->ps.period, in qh_unlink_periodic()
615 hc32_to_cpup(ehci, &qh->hw->hw_info2) & (QH_CMASK | QH_SMASK), in qh_unlink_periodic()
616 qh, qh->ps.phase, qh->ps.usecs, qh->ps.c_usecs); in qh_unlink_periodic()
618 /* qh->qh_next still "live" to HC */ in qh_unlink_periodic()
619 qh->qh_state = QH_STATE_UNLINK; in qh_unlink_periodic()
620 qh->qh_next.ptr = NULL; in qh_unlink_periodic()
622 if (ehci->qh_scan_next == qh) in qh_unlink_periodic()
623 ehci->qh_scan_next = list_entry(qh->intr_node.next, in qh_unlink_periodic()
625 list_del(&qh->intr_node); in qh_unlink_periodic()
630 if (qh->qh_state != QH_STATE_LINKED || in cancel_unlink_wait_intr()
631 list_empty(&qh->unlink_node)) in cancel_unlink_wait_intr()
634 list_del_init(&qh->unlink_node); in cancel_unlink_wait_intr()
645 if (qh->qh_state != QH_STATE_LINKED) in start_unlink_intr()
661 qh->unlink_cycle = ehci->intr_unlink_cycle; in start_unlink_intr()
664 list_add_tail(&qh->unlink_node, &ehci->intr_unlink); in start_unlink_intr()
666 if (ehci->intr_unlinking) in start_unlink_intr()
668 else if (ehci->rh_state < EHCI_RH_RUNNING) in start_unlink_intr()
670 else if (ehci->intr_unlink.next == &qh->unlink_node) { in start_unlink_intr()
672 ++ehci->intr_unlink_cycle; in start_unlink_intr()
684 qh->unlink_cycle = ehci->intr_unlink_wait_cycle; in start_unlink_intr_wait()
687 list_add_tail(&qh->unlink_node, &ehci->intr_unlink_wait); in start_unlink_intr_wait()
689 if (ehci->rh_state < EHCI_RH_RUNNING) in start_unlink_intr_wait()
691 else if (ehci->intr_unlink_wait.next == &qh->unlink_node) { in start_unlink_intr_wait()
693 ++ehci->intr_unlink_wait_cycle; in start_unlink_intr_wait()
699 struct ehci_qh_hw *hw = qh->hw; in end_unlink_intr()
702 qh->qh_state = QH_STATE_IDLE; in end_unlink_intr()
703 hw->hw_next = EHCI_LIST_END(ehci); in end_unlink_intr()
705 if (!list_empty(&qh->qtd_list)) in end_unlink_intr()
709 if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) { in end_unlink_intr()
720 * FIXME kill the now-dysfunctional queued urbs in end_unlink_intr()
729 --ehci->intr_count; in end_unlink_intr()
733 /*-------------------------------------------------------------------------*/
749 usecs = ehci->uframe_periodic_max - usecs; in check_period()
753 if (ehci->bandwidth[uframe] > usecs) in check_period()
770 int retval = -ENOSPC; in check_intr_schedule()
773 if (qh->ps.c_usecs && uframe >= 6) /* FSTN territory? */ in check_intr_schedule()
776 if (!check_period(ehci, frame, uframe, qh->ps.bw_uperiod, qh->ps.usecs)) in check_intr_schedule()
778 if (!qh->ps.c_usecs) { in check_intr_schedule()
785 if (tt_available(ehci, &qh->ps, tt, frame, uframe)) { in check_intr_schedule()
791 qh->ps.bw_uperiod, qh->ps.c_usecs)) in check_intr_schedule()
808 mask = 0x03 << (uframe + qh->gap_uf); in check_intr_schedule()
812 if (tt_no_collision(ehci, qh->ps.bw_period, qh->ps.udev, frame, mask)) { in check_intr_schedule()
813 if (!check_period(ehci, frame, uframe + qh->gap_uf + 1, in check_intr_schedule()
814 qh->ps.bw_uperiod, qh->ps.c_usecs)) in check_intr_schedule()
816 if (!check_period(ehci, frame, uframe + qh->gap_uf, in check_intr_schedule()
817 qh->ps.bw_uperiod, qh->ps.c_usecs)) in check_intr_schedule()
827 * or when the previous schedule slot can't be re-used.
834 struct ehci_qh_hw *hw = qh->hw; in qh_schedule()
837 hw->hw_next = EHCI_LIST_END(ehci); in qh_schedule()
840 if (qh->ps.phase != NO_FRAME) { in qh_schedule()
847 tt = find_tt(qh->ps.udev); in qh_schedule()
852 compute_tt_budget(ehci->tt_budget, tt); in qh_schedule()
858 if (qh->ps.bw_period) { in qh_schedule()
862 for (i = qh->ps.bw_period; i > 0; --i) { in qh_schedule()
863 frame = ++ehci->random_frame & (qh->ps.bw_period - 1); in qh_schedule()
872 /* qh->ps.bw_period == 0 means every uframe */ in qh_schedule()
880 qh->ps.phase = (qh->ps.period ? ehci->random_frame & in qh_schedule()
881 (qh->ps.period - 1) : 0); in qh_schedule()
882 qh->ps.bw_phase = qh->ps.phase & (qh->ps.bw_period - 1); in qh_schedule()
883 qh->ps.phase_uf = uframe; in qh_schedule()
884 qh->ps.cs_mask = qh->ps.period ? in qh_schedule()
888 /* reset S-frame and (maybe) C-frame masks */ in qh_schedule()
889 hw->hw_info2 &= cpu_to_hc32(ehci, ~(QH_CMASK | QH_SMASK)); in qh_schedule()
890 hw->hw_info2 |= cpu_to_hc32(ehci, qh->ps.cs_mask); in qh_schedule()
910 epnum = urb->ep->desc.bEndpointAddress; in intr_submit()
912 spin_lock_irqsave(&ehci->lock, flags); in intr_submit()
915 status = -ESHUTDOWN; in intr_submit()
924 qh = qh_append_tds(ehci, urb, &empty, epnum, &urb->ep->hcpriv); in intr_submit()
926 status = -ENOMEM; in intr_submit()
929 if (qh->qh_state == QH_STATE_IDLE) { in intr_submit()
936 qh = qh_append_tds(ehci, urb, qtd_list, epnum, &urb->ep->hcpriv); in intr_submit()
940 if (qh->qh_state == QH_STATE_IDLE) { in intr_submit()
949 ehci_to_hcd(ehci)->self.bandwidth_int_reqs++; in intr_submit()
955 spin_unlock_irqrestore(&ehci->lock, flags); in intr_submit()
966 list_for_each_entry_safe(qh, ehci->qh_scan_next, &ehci->intr_qh_list, in scan_intr()
970 if (!list_empty(&qh->qtd_list)) { in scan_intr()
975 * drops the lock. That's why ehci->qh_scan_next in scan_intr()
977 * gets unlinked then ehci->qh_scan_next is adjusted in scan_intr()
983 else if (unlikely(list_empty(&qh->qtd_list) && in scan_intr()
984 qh->qh_state == QH_STATE_LINKED)) in scan_intr()
990 /*-------------------------------------------------------------------------*/
1001 INIT_LIST_HEAD(&stream->td_list); in iso_stream_alloc()
1002 INIT_LIST_HEAD(&stream->free_list); in iso_stream_alloc()
1003 stream->next_uframe = NO_FRAME; in iso_stream_alloc()
1004 stream->ps.phase = NO_FRAME; in iso_stream_alloc()
1018 struct usb_device *dev = urb->dev; in iso_stream_init()
1028 epnum = usb_pipeendpoint(urb->pipe); in iso_stream_init()
1029 is_input = usb_pipein(urb->pipe) ? USB_DIR_IN : 0; in iso_stream_init()
1030 maxp = usb_endpoint_maxp(&urb->ep->desc); in iso_stream_init()
1034 if (dev->speed == USB_SPEED_HIGH) { in iso_stream_init()
1035 unsigned multi = usb_endpoint_maxp_mult(&urb->ep->desc); in iso_stream_init()
1037 stream->highspeed = 1; in iso_stream_init()
1042 stream->buf0 = cpu_to_hc32(ehci, (epnum << 8) | dev->devnum); in iso_stream_init()
1043 stream->buf1 = cpu_to_hc32(ehci, buf1); in iso_stream_init()
1044 stream->buf2 = cpu_to_hc32(ehci, multi); in iso_stream_init()
1049 stream->ps.usecs = HS_USECS_ISO(maxp); in iso_stream_init()
1053 1 << (urb->ep->desc.bInterval - 1)); in iso_stream_init()
1055 /* Allow urb->interval to override */ in iso_stream_init()
1056 stream->ps.bw_uperiod = min_t(unsigned, tmp, urb->interval); in iso_stream_init()
1058 stream->uperiod = urb->interval; in iso_stream_init()
1059 stream->ps.period = urb->interval >> 3; in iso_stream_init()
1060 stream->bandwidth = stream->ps.usecs * 8 / in iso_stream_init()
1061 stream->ps.bw_uperiod; in iso_stream_init()
1068 addr = dev->ttport << 24; in iso_stream_init()
1070 || (dev->tt->hub != in iso_stream_init()
1071 ehci_to_hcd(ehci)->self.root_hub)) in iso_stream_init()
1072 addr |= dev->tt->hub->devnum << 16; in iso_stream_init()
1074 addr |= dev->devnum; in iso_stream_init()
1075 stream->ps.usecs = HS_USECS_ISO(maxp); in iso_stream_init()
1076 think_time = dev->tt->think_time; in iso_stream_init()
1077 stream->ps.tt_usecs = NS_TO_US(think_time + usb_calc_bus_time( in iso_stream_init()
1078 dev->speed, is_input, 1, maxp)); in iso_stream_init()
1084 stream->ps.c_usecs = stream->ps.usecs; in iso_stream_init()
1085 stream->ps.usecs = HS_USECS_ISO(1); in iso_stream_init()
1086 stream->ps.cs_mask = 1; in iso_stream_init()
1088 /* c-mask as specified in USB 2.0 11.18.4 3.c */ in iso_stream_init()
1089 tmp = (1 << (hs_transfers + 2)) - 1; in iso_stream_init()
1090 stream->ps.cs_mask |= tmp << (8 + 2); in iso_stream_init()
1092 stream->ps.cs_mask = smask_out[hs_transfers - 1]; in iso_stream_init()
1096 1 << (urb->ep->desc.bInterval - 1)); in iso_stream_init()
1098 /* Allow urb->interval to override */ in iso_stream_init()
1099 stream->ps.bw_period = min_t(unsigned, tmp, urb->interval); in iso_stream_init()
1100 stream->ps.bw_uperiod = stream->ps.bw_period << 3; in iso_stream_init()
1102 stream->ps.period = urb->interval; in iso_stream_init()
1103 stream->uperiod = urb->interval << 3; in iso_stream_init()
1104 stream->bandwidth = (stream->ps.usecs + stream->ps.c_usecs) / in iso_stream_init()
1105 stream->ps.bw_period; in iso_stream_init()
1107 /* stream->splits gets created from cs_mask later */ in iso_stream_init()
1108 stream->address = cpu_to_hc32(ehci, addr); in iso_stream_init()
1111 stream->ps.udev = dev; in iso_stream_init()
1112 stream->ps.ep = urb->ep; in iso_stream_init()
1114 stream->bEndpointAddress = is_input | epnum; in iso_stream_init()
1115 stream->maxp = maxp; in iso_stream_init()
1126 epnum = usb_pipeendpoint (urb->pipe); in iso_stream_find()
1127 if (usb_pipein(urb->pipe)) in iso_stream_find()
1128 ep = urb->dev->ep_in[epnum]; in iso_stream_find()
1130 ep = urb->dev->ep_out[epnum]; in iso_stream_find()
1132 spin_lock_irqsave(&ehci->lock, flags); in iso_stream_find()
1133 stream = ep->hcpriv; in iso_stream_find()
1138 ep->hcpriv = stream; in iso_stream_find()
1142 /* if dev->ep [epnum] is a QH, hw is set */ in iso_stream_find()
1143 } else if (unlikely(stream->hw != NULL)) { in iso_stream_find()
1145 urb->dev->devpath, epnum, in iso_stream_find()
1146 usb_pipein(urb->pipe) ? "in" : "out"); in iso_stream_find()
1150 spin_unlock_irqrestore(&ehci->lock, flags); in iso_stream_find()
1154 /*-------------------------------------------------------------------------*/
1156 /* ehci_iso_sched ops can be ITD-only or SITD-only */
1167 INIT_LIST_HEAD(&iso_sched->td_list); in iso_sched_alloc()
1181 dma_addr_t dma = urb->transfer_dma; in itd_sched_init()
1184 iso_sched->span = urb->number_of_packets * stream->uperiod; in itd_sched_init()
1186 /* figure out per-uframe itd fields that we'll need later in itd_sched_init()
1189 for (i = 0; i < urb->number_of_packets; i++) { in itd_sched_init()
1190 struct ehci_iso_packet *uframe = &iso_sched->packet[i]; in itd_sched_init()
1195 length = urb->iso_frame_desc[i].length; in itd_sched_init()
1196 buf = dma + urb->iso_frame_desc[i].offset; in itd_sched_init()
1200 if (unlikely(((i + 1) == urb->number_of_packets)) in itd_sched_init()
1201 && !(urb->transfer_flags & URB_NO_INTERRUPT)) in itd_sched_init()
1204 uframe->transaction = cpu_to_hc32(ehci, trans); in itd_sched_init()
1207 uframe->bufp = (buf & ~(u64)0x0fff); in itd_sched_init()
1209 if (unlikely((uframe->bufp != (buf & ~(u64)0x0fff)))) in itd_sched_init()
1210 uframe->cross = 1; in itd_sched_init()
1222 /* caller must hold ehci->lock! */ in iso_sched_free()
1223 list_splice(&iso_sched->td_list, &stream->free_list); in iso_sched_free()
1242 sched = iso_sched_alloc(urb->number_of_packets, mem_flags); in itd_urb_transaction()
1244 return -ENOMEM; in itd_urb_transaction()
1248 if (urb->interval < 8) in itd_urb_transaction()
1249 num_itds = 1 + (sched->span + 7) / 8; in itd_urb_transaction()
1251 num_itds = urb->number_of_packets; in itd_urb_transaction()
1254 spin_lock_irqsave(&ehci->lock, flags); in itd_urb_transaction()
1261 if (likely(!list_empty(&stream->free_list))) { in itd_urb_transaction()
1262 itd = list_first_entry(&stream->free_list, in itd_urb_transaction()
1264 if (itd->frame == ehci->now_frame) in itd_urb_transaction()
1266 list_del(&itd->itd_list); in itd_urb_transaction()
1267 itd_dma = itd->itd_dma; in itd_urb_transaction()
1270 spin_unlock_irqrestore(&ehci->lock, flags); in itd_urb_transaction()
1271 itd = dma_pool_alloc(ehci->itd_pool, mem_flags, in itd_urb_transaction()
1273 spin_lock_irqsave(&ehci->lock, flags); in itd_urb_transaction()
1276 spin_unlock_irqrestore(&ehci->lock, flags); in itd_urb_transaction()
1277 return -ENOMEM; in itd_urb_transaction()
1282 itd->itd_dma = itd_dma; in itd_urb_transaction()
1283 itd->frame = NO_FRAME; in itd_urb_transaction()
1284 list_add(&itd->itd_list, &sched->td_list); in itd_urb_transaction()
1286 spin_unlock_irqrestore(&ehci->lock, flags); in itd_urb_transaction()
1289 urb->hcpriv = sched; in itd_urb_transaction()
1290 urb->error_count = 0; in itd_urb_transaction()
1294 /*-------------------------------------------------------------------------*/
1302 int usecs = stream->ps.usecs; in reserve_release_iso_bandwidth()
1303 int c_usecs = stream->ps.c_usecs; in reserve_release_iso_bandwidth()
1304 int tt_usecs = stream->ps.tt_usecs; in reserve_release_iso_bandwidth()
1307 if (stream->ps.phase == NO_FRAME) /* Bandwidth wasn't reserved */ in reserve_release_iso_bandwidth()
1309 uframe = stream->ps.bw_phase << 3; in reserve_release_iso_bandwidth()
1311 bandwidth_dbg(ehci, sign, "iso", &stream->ps); in reserve_release_iso_bandwidth()
1314 usecs = -usecs; in reserve_release_iso_bandwidth()
1315 c_usecs = -c_usecs; in reserve_release_iso_bandwidth()
1316 tt_usecs = -tt_usecs; in reserve_release_iso_bandwidth()
1319 if (!stream->splits) { /* High speed */ in reserve_release_iso_bandwidth()
1320 for (i = uframe + stream->ps.phase_uf; i < EHCI_BANDWIDTH_SIZE; in reserve_release_iso_bandwidth()
1321 i += stream->ps.bw_uperiod) in reserve_release_iso_bandwidth()
1322 ehci->bandwidth[i] += usecs; in reserve_release_iso_bandwidth()
1325 s_mask = stream->ps.cs_mask; in reserve_release_iso_bandwidth()
1330 i += stream->ps.bw_uperiod) { in reserve_release_iso_bandwidth()
1331 for ((j = stream->ps.phase_uf, m = 1 << j); j < 8; in reserve_release_iso_bandwidth()
1334 ehci->bandwidth[i+j] += usecs; in reserve_release_iso_bandwidth()
1336 ehci->bandwidth[i+j] += c_usecs; in reserve_release_iso_bandwidth()
1340 tt = find_tt(stream->ps.udev); in reserve_release_iso_bandwidth()
1342 list_add_tail(&stream->ps.ps_list, &tt->ps_list); in reserve_release_iso_bandwidth()
1344 list_del(&stream->ps.ps_list); in reserve_release_iso_bandwidth()
1347 i += stream->ps.bw_period) in reserve_release_iso_bandwidth()
1348 tt->bandwidth[i] += tt_usecs; in reserve_release_iso_bandwidth()
1362 usecs = ehci->uframe_periodic_max - stream->ps.usecs; in itd_slot_ok()
1364 for (uframe &= stream->ps.bw_uperiod - 1; uframe < EHCI_BANDWIDTH_SIZE; in itd_slot_ok()
1365 uframe += stream->ps.bw_uperiod) { in itd_slot_ok()
1366 if (ehci->bandwidth[uframe] > usecs) in itd_slot_ok()
1384 mask = stream->ps.cs_mask << (uframe & 7); in sitd_slot_ok()
1386 /* for OUT, don't wrap SSPLIT into H-microframe 7 */ in sitd_slot_ok()
1387 if (((stream->ps.cs_mask & 0xff) << (uframe & 7)) >= (1 << 7)) in sitd_slot_ok()
1395 uframe &= stream->ps.bw_uperiod - 1; in sitd_slot_ok()
1403 if (!tt_available(ehci, &stream->ps, tt, frame, uf)) in sitd_slot_ok()
1409 if (!tt_no_collision(ehci, stream->ps.bw_period, in sitd_slot_ok()
1410 stream->ps.udev, frame, mask)) in sitd_slot_ok()
1420 max_used = ehci->uframe_periodic_max - stream->ps.usecs; in sitd_slot_ok()
1421 for (tmp = stream->ps.cs_mask & 0xff; tmp; tmp >>= 1, uf++) { in sitd_slot_ok()
1422 if (ehci->bandwidth[uf] > max_used) in sitd_slot_ok()
1427 if (stream->ps.c_usecs) { in sitd_slot_ok()
1428 max_used = ehci->uframe_periodic_max - in sitd_slot_ok()
1429 stream->ps.c_usecs; in sitd_slot_ok()
1433 if ((stream->ps.cs_mask & tmp) == 0) in sitd_slot_ok()
1435 if (ehci->bandwidth[uf+i] > max_used) in sitd_slot_ok()
1440 uframe += stream->ps.bw_uperiod; in sitd_slot_ok()
1443 stream->ps.cs_mask <<= uframe & 7; in sitd_slot_ok()
1444 stream->splits = cpu_to_hc32(ehci, stream->ps.cs_mask); in sitd_slot_ok()
1449 * This scheduler plans almost as far into the future as it has actual
1451 * "as small as possible" to be cache-friendlier.) That limits the size
1454 * by the per-urb URB_NO_INTERRUPT hint, the log2_irq_thresh module parameter,
1469 unsigned mod = ehci->periodic_size << 3; in iso_stream_schedule()
1470 struct ehci_iso_sched *sched = urb->hcpriv; in iso_stream_schedule()
1471 bool empty = list_empty(&stream->td_list); in iso_stream_schedule()
1474 period = stream->uperiod; in iso_stream_schedule()
1475 span = sched->span; in iso_stream_schedule()
1476 if (!stream->highspeed) in iso_stream_schedule()
1481 ehci_to_hcd(ehci), urb->ep))) { in iso_stream_schedule()
1484 if (stream->ps.phase == NO_FRAME) { in iso_stream_schedule()
1486 struct ehci_tt *tt = find_tt(stream->ps.udev); in iso_stream_schedule()
1492 compute_tt_budget(ehci->tt_budget, tt); in iso_stream_schedule()
1494 start = ((-(++ehci->random_frame)) << 3) & (period - 1); in iso_stream_schedule()
1497 * Early uframes are more precious because full-speed in iso_stream_schedule()
1504 start--; in iso_stream_schedule()
1506 if (stream->highspeed) { in iso_stream_schedule()
1521 status = -ENOSPC; in iso_stream_schedule()
1524 stream->ps.phase = (start >> 3) & in iso_stream_schedule()
1525 (stream->ps.period - 1); in iso_stream_schedule()
1526 stream->ps.bw_phase = stream->ps.phase & in iso_stream_schedule()
1527 (stream->ps.bw_period - 1); in iso_stream_schedule()
1528 stream->ps.phase_uf = start & 7; in iso_stream_schedule()
1534 start = (stream->ps.phase << 3) + stream->ps.phase_uf; in iso_stream_schedule()
1537 stream->next_uframe = start; in iso_stream_schedule()
1541 now = ehci_read_frame_index(ehci) & (mod - 1); in iso_stream_schedule()
1544 if (ehci->i_thresh) in iso_stream_schedule()
1545 next = now + ehci->i_thresh; /* uframe cache */ in iso_stream_schedule()
1550 if (ehci->isoc_count == 0) in iso_stream_schedule()
1551 ehci->last_iso_frame = now >> 3; in iso_stream_schedule()
1554 * Use ehci->last_iso_frame as the base. There can't be any in iso_stream_schedule()
1557 base = ehci->last_iso_frame << 3; in iso_stream_schedule()
1558 next = (next - base) & (mod - 1); in iso_stream_schedule()
1559 start = (stream->next_uframe - base) & (mod - 1); in iso_stream_schedule()
1570 now2 = (now - base) & (mod - 1); in iso_stream_schedule()
1574 ehci_dbg(ehci, "request %p would overflow (%u-%u < %u mod %u)\n", in iso_stream_schedule()
1575 urb, stream->next_uframe, base, period, mod); in iso_stream_schedule()
1576 status = -EFBIG; in iso_stream_schedule()
1585 (urb->transfer_flags & URB_ISO_ASAP))) in iso_stream_schedule()
1594 if (urb->transfer_flags & URB_ISO_ASAP) in iso_stream_schedule()
1601 skip = (now2 - start + period - 1) & -period; in iso_stream_schedule()
1604 urb, start + base, span - period, now2 + base, in iso_stream_schedule()
1608 skip = span - period; in iso_stream_schedule()
1618 urb->error_count = skip / period; in iso_stream_schedule()
1620 sched->first_packet = urb->error_count; in iso_stream_schedule()
1625 start = next + ((start - next) & (period - 1)); in iso_stream_schedule()
1629 if (unlikely(start + span - period >= mod + wrap)) { in iso_stream_schedule()
1631 urb, start, span - period, mod + wrap); in iso_stream_schedule()
1632 status = -EFBIG; in iso_stream_schedule()
1637 stream->next_uframe = (start + skip) & (mod - 1); in iso_stream_schedule()
1640 urb->start_frame = start & (mod - 1); in iso_stream_schedule()
1641 if (!stream->highspeed) in iso_stream_schedule()
1642 urb->start_frame >>= 3; in iso_stream_schedule()
1647 urb->hcpriv = NULL; in iso_stream_schedule()
1651 /*-------------------------------------------------------------------------*/
1660 itd->hw_next = EHCI_LIST_END(ehci); in itd_init()
1661 itd->hw_bufp[0] = stream->buf0; in itd_init()
1662 itd->hw_bufp[1] = stream->buf1; in itd_init()
1663 itd->hw_bufp[2] = stream->buf2; in itd_init()
1666 itd->index[i] = -1; in itd_init()
1680 struct ehci_iso_packet *uf = &iso_sched->packet[index]; in itd_patch()
1681 unsigned pg = itd->pg; in itd_patch()
1683 /* BUG_ON(pg == 6 && uf->cross); */ in itd_patch()
1686 itd->index[uframe] = index; in itd_patch()
1688 itd->hw_transaction[uframe] = uf->transaction; in itd_patch()
1689 itd->hw_transaction[uframe] |= cpu_to_hc32(ehci, pg << 12); in itd_patch()
1690 itd->hw_bufp[pg] |= cpu_to_hc32(ehci, uf->bufp & ~(u32)0); in itd_patch()
1691 itd->hw_bufp_hi[pg] |= cpu_to_hc32(ehci, (u32)(uf->bufp >> 32)); in itd_patch()
1694 if (unlikely(uf->cross)) { in itd_patch()
1695 u64 bufp = uf->bufp + 4096; in itd_patch()
1697 itd->pg = ++pg; in itd_patch()
1698 itd->hw_bufp[pg] |= cpu_to_hc32(ehci, bufp & ~(u32)0); in itd_patch()
1699 itd->hw_bufp_hi[pg] |= cpu_to_hc32(ehci, (u32)(bufp >> 32)); in itd_patch()
1706 union ehci_shadow *prev = &ehci->pshadow[frame]; in itd_link()
1707 __hc32 *hw_p = &ehci->periodic[frame]; in itd_link()
1721 itd->itd_next = here; in itd_link()
1722 itd->hw_next = *hw_p; in itd_link()
1723 prev->itd = itd; in itd_link()
1724 itd->frame = frame; in itd_link()
1726 *hw_p = cpu_to_hc32(ehci, itd->itd_dma | Q_TYPE_ITD); in itd_link()
1739 struct ehci_iso_sched *iso_sched = urb->hcpriv; in itd_link_urb()
1742 next_uframe = stream->next_uframe & (mod - 1); in itd_link_urb()
1744 if (unlikely(list_empty(&stream->td_list))) in itd_link_urb()
1745 ehci_to_hcd(ehci)->self.bandwidth_allocated in itd_link_urb()
1746 += stream->bandwidth; in itd_link_urb()
1748 if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { in itd_link_urb()
1749 if (ehci->amd_pll_fix == 1) in itd_link_urb()
1753 ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs++; in itd_link_urb()
1756 for (packet = iso_sched->first_packet, itd = NULL; in itd_link_urb()
1757 packet < urb->number_of_packets;) { in itd_link_urb()
1760 /* BUG_ON(list_empty(&iso_sched->td_list)); */ in itd_link_urb()
1764 itd = list_entry(iso_sched->td_list.next, in itd_link_urb()
1766 list_move_tail(&itd->itd_list, &stream->td_list); in itd_link_urb()
1767 itd->stream = stream; in itd_link_urb()
1768 itd->urb = urb; in itd_link_urb()
1777 next_uframe += stream->uperiod; in itd_link_urb()
1778 next_uframe &= mod - 1; in itd_link_urb()
1783 || packet == urb->number_of_packets) { in itd_link_urb()
1784 itd_link(ehci, frame & (ehci->periodic_size - 1), itd); in itd_link_urb()
1788 stream->next_uframe = next_uframe; in itd_link_urb()
1792 urb->hcpriv = stream; in itd_link_urb()
1794 ++ehci->isoc_count; in itd_link_urb()
1812 struct urb *urb = itd->urb; in itd_complete()
1816 int urb_index = -1; in itd_complete()
1817 struct ehci_iso_stream *stream = itd->stream; in itd_complete()
1822 if (likely(itd->index[uframe] == -1)) in itd_complete()
1824 urb_index = itd->index[uframe]; in itd_complete()
1825 desc = &urb->iso_frame_desc[urb_index]; in itd_complete()
1827 t = hc32_to_cpup(ehci, &itd->hw_transaction[uframe]); in itd_complete()
1828 itd->hw_transaction[uframe] = 0; in itd_complete()
1832 urb->error_count++; in itd_complete()
1834 desc->status = usb_pipein(urb->pipe) in itd_complete()
1835 ? -ENOSR /* hc couldn't read */ in itd_complete()
1836 : -ECOMM; /* hc couldn't write */ in itd_complete()
1838 desc->status = -EOVERFLOW; in itd_complete()
1840 desc->status = -EPROTO; in itd_complete()
1844 desc->actual_length = EHCI_ITD_LENGTH(t); in itd_complete()
1845 urb->actual_length += desc->actual_length; in itd_complete()
1848 desc->status = 0; in itd_complete()
1849 desc->actual_length = EHCI_ITD_LENGTH(t); in itd_complete()
1850 urb->actual_length += desc->actual_length; in itd_complete()
1853 urb->error_count++; in itd_complete()
1858 if (likely((urb_index + 1) != urb->number_of_packets)) in itd_complete()
1863 * list_for_each_entry (itd, &stream->td_list, itd_list) in itd_complete()
1864 * BUG_ON(itd->urb == urb); in itd_complete()
1872 --ehci->isoc_count; in itd_complete()
1875 ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; in itd_complete()
1876 if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { in itd_complete()
1877 if (ehci->amd_pll_fix == 1) in itd_complete()
1881 if (unlikely(list_is_singular(&stream->td_list))) in itd_complete()
1882 ehci_to_hcd(ehci)->self.bandwidth_allocated in itd_complete()
1883 -= stream->bandwidth; in itd_complete()
1886 itd->urb = NULL; in itd_complete()
1889 list_move_tail(&itd->itd_list, &stream->free_list); in itd_complete()
1892 if (list_empty(&stream->td_list)) { in itd_complete()
1893 list_splice_tail_init(&stream->free_list, in itd_complete()
1894 &ehci->cached_itd_list); in itd_complete()
1901 /*-------------------------------------------------------------------------*/
1906 int status = -EINVAL; in itd_submit()
1914 return -ENOMEM; in itd_submit()
1916 if (unlikely(urb->interval != stream->uperiod)) { in itd_submit()
1917 ehci_dbg(ehci, "can't change iso interval %d --> %d\n", in itd_submit()
1918 stream->uperiod, urb->interval); in itd_submit()
1925 __func__, urb->dev->devpath, urb, in itd_submit()
1926 usb_pipeendpoint(urb->pipe), in itd_submit()
1927 usb_pipein(urb->pipe) ? "in" : "out", in itd_submit()
1928 urb->transfer_buffer_length, in itd_submit()
1929 urb->number_of_packets, urb->interval, in itd_submit()
1941 spin_lock_irqsave(&ehci->lock, flags); in itd_submit()
1943 status = -ESHUTDOWN; in itd_submit()
1951 itd_link_urb(ehci, urb, ehci->periodic_size << 3, stream); in itd_submit()
1959 spin_unlock_irqrestore(&ehci->lock, flags); in itd_submit()
1964 /*-------------------------------------------------------------------------*/
1980 dma_addr_t dma = urb->transfer_dma; in sitd_sched_init()
1983 iso_sched->span = urb->number_of_packets * stream->ps.period; in sitd_sched_init()
1985 /* figure out per-frame sitd fields that we'll need later in sitd_sched_init()
1988 for (i = 0; i < urb->number_of_packets; i++) { in sitd_sched_init()
1989 struct ehci_iso_packet *packet = &iso_sched->packet[i]; in sitd_sched_init()
1994 length = urb->iso_frame_desc[i].length & 0x03ff; in sitd_sched_init()
1995 buf = dma + urb->iso_frame_desc[i].offset; in sitd_sched_init()
1998 if (((i + 1) == urb->number_of_packets) in sitd_sched_init()
1999 && !(urb->transfer_flags & URB_NO_INTERRUPT)) in sitd_sched_init()
2002 packet->transaction = cpu_to_hc32(ehci, trans); in sitd_sched_init()
2005 packet->bufp = buf; in sitd_sched_init()
2006 packet->buf1 = (buf + length) & ~0x0fff; in sitd_sched_init()
2007 if (packet->buf1 != (buf & ~(u64)0x0fff)) in sitd_sched_init()
2008 packet->cross = 1; in sitd_sched_init()
2010 /* OUT uses multiple start-splits */ in sitd_sched_init()
2011 if (stream->bEndpointAddress & USB_DIR_IN) in sitd_sched_init()
2016 packet->buf1 |= length; in sitd_sched_init()
2034 iso_sched = iso_sched_alloc(urb->number_of_packets, mem_flags); in sitd_urb_transaction()
2036 return -ENOMEM; in sitd_urb_transaction()
2041 spin_lock_irqsave(&ehci->lock, flags); in sitd_urb_transaction()
2042 for (i = 0; i < urb->number_of_packets; i++) { in sitd_urb_transaction()
2045 * for IN (using sitd->hw_backpointer, like a FSTN), which in sitd_urb_transaction()
2053 if (likely(!list_empty(&stream->free_list))) { in sitd_urb_transaction()
2054 sitd = list_first_entry(&stream->free_list, in sitd_urb_transaction()
2056 if (sitd->frame == ehci->now_frame) in sitd_urb_transaction()
2058 list_del(&sitd->sitd_list); in sitd_urb_transaction()
2059 sitd_dma = sitd->sitd_dma; in sitd_urb_transaction()
2062 spin_unlock_irqrestore(&ehci->lock, flags); in sitd_urb_transaction()
2063 sitd = dma_pool_alloc(ehci->sitd_pool, mem_flags, in sitd_urb_transaction()
2065 spin_lock_irqsave(&ehci->lock, flags); in sitd_urb_transaction()
2068 spin_unlock_irqrestore(&ehci->lock, flags); in sitd_urb_transaction()
2069 return -ENOMEM; in sitd_urb_transaction()
2074 sitd->sitd_dma = sitd_dma; in sitd_urb_transaction()
2075 sitd->frame = NO_FRAME; in sitd_urb_transaction()
2076 list_add(&sitd->sitd_list, &iso_sched->td_list); in sitd_urb_transaction()
2080 urb->hcpriv = iso_sched; in sitd_urb_transaction()
2081 urb->error_count = 0; in sitd_urb_transaction()
2083 spin_unlock_irqrestore(&ehci->lock, flags); in sitd_urb_transaction()
2087 /*-------------------------------------------------------------------------*/
2098 struct ehci_iso_packet *uf = &iso_sched->packet[index]; in sitd_patch()
2101 sitd->hw_next = EHCI_LIST_END(ehci); in sitd_patch()
2102 sitd->hw_fullspeed_ep = stream->address; in sitd_patch()
2103 sitd->hw_uframe = stream->splits; in sitd_patch()
2104 sitd->hw_results = uf->transaction; in sitd_patch()
2105 sitd->hw_backpointer = EHCI_LIST_END(ehci); in sitd_patch()
2107 bufp = uf->bufp; in sitd_patch()
2108 sitd->hw_buf[0] = cpu_to_hc32(ehci, bufp); in sitd_patch()
2109 sitd->hw_buf_hi[0] = cpu_to_hc32(ehci, bufp >> 32); in sitd_patch()
2111 sitd->hw_buf[1] = cpu_to_hc32(ehci, uf->buf1); in sitd_patch()
2112 if (uf->cross) in sitd_patch()
2114 sitd->hw_buf_hi[1] = cpu_to_hc32(ehci, bufp >> 32); in sitd_patch()
2115 sitd->index = index; in sitd_patch()
2122 sitd->sitd_next = ehci->pshadow[frame]; in sitd_link()
2123 sitd->hw_next = ehci->periodic[frame]; in sitd_link()
2124 ehci->pshadow[frame].sitd = sitd; in sitd_link()
2125 sitd->frame = frame; in sitd_link()
2127 ehci->periodic[frame] = cpu_to_hc32(ehci, sitd->sitd_dma | Q_TYPE_SITD); in sitd_link()
2140 struct ehci_iso_sched *sched = urb->hcpriv; in sitd_link_urb()
2143 next_uframe = stream->next_uframe; in sitd_link_urb()
2145 if (list_empty(&stream->td_list)) in sitd_link_urb()
2147 ehci_to_hcd(ehci)->self.bandwidth_allocated in sitd_link_urb()
2148 += stream->bandwidth; in sitd_link_urb()
2150 if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { in sitd_link_urb()
2151 if (ehci->amd_pll_fix == 1) in sitd_link_urb()
2155 ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs++; in sitd_link_urb()
2158 for (packet = sched->first_packet, sitd = NULL; in sitd_link_urb()
2159 packet < urb->number_of_packets; in sitd_link_urb()
2163 BUG_ON(list_empty(&sched->td_list)); in sitd_link_urb()
2167 sitd = list_entry(sched->td_list.next, in sitd_link_urb()
2169 list_move_tail(&sitd->sitd_list, &stream->td_list); in sitd_link_urb()
2170 sitd->stream = stream; in sitd_link_urb()
2171 sitd->urb = urb; in sitd_link_urb()
2174 sitd_link(ehci, (next_uframe >> 3) & (ehci->periodic_size - 1), in sitd_link_urb()
2177 next_uframe += stream->uperiod; in sitd_link_urb()
2179 stream->next_uframe = next_uframe & (mod - 1); in sitd_link_urb()
2183 urb->hcpriv = stream; in sitd_link_urb()
2185 ++ehci->isoc_count; in sitd_link_urb()
2189 /*-------------------------------------------------------------------------*/
2206 struct urb *urb = sitd->urb; in sitd_complete()
2210 struct ehci_iso_stream *stream = sitd->stream; in sitd_complete()
2213 urb_index = sitd->index; in sitd_complete()
2214 desc = &urb->iso_frame_desc[urb_index]; in sitd_complete()
2215 t = hc32_to_cpup(ehci, &sitd->hw_results); in sitd_complete()
2219 urb->error_count++; in sitd_complete()
2221 desc->status = usb_pipein(urb->pipe) in sitd_complete()
2222 ? -ENOSR /* hc couldn't read */ in sitd_complete()
2223 : -ECOMM; /* hc couldn't write */ in sitd_complete()
2225 desc->status = -EOVERFLOW; in sitd_complete()
2227 desc->status = -EPROTO; in sitd_complete()
2230 urb->error_count++; in sitd_complete()
2232 desc->status = 0; in sitd_complete()
2233 desc->actual_length = desc->length - SITD_LENGTH(t); in sitd_complete()
2234 urb->actual_length += desc->actual_length; in sitd_complete()
2238 if ((urb_index + 1) != urb->number_of_packets) in sitd_complete()
2243 * list_for_each_entry (sitd, &stream->td_list, sitd_list) in sitd_complete()
2244 * BUG_ON(sitd->urb == urb); in sitd_complete()
2252 --ehci->isoc_count; in sitd_complete()
2255 ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; in sitd_complete()
2256 if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { in sitd_complete()
2257 if (ehci->amd_pll_fix == 1) in sitd_complete()
2261 if (list_is_singular(&stream->td_list)) in sitd_complete()
2262 ehci_to_hcd(ehci)->self.bandwidth_allocated in sitd_complete()
2263 -= stream->bandwidth; in sitd_complete()
2266 sitd->urb = NULL; in sitd_complete()
2269 list_move_tail(&sitd->sitd_list, &stream->free_list); in sitd_complete()
2272 if (list_empty(&stream->td_list)) { in sitd_complete()
2273 list_splice_tail_init(&stream->free_list, in sitd_complete()
2274 &ehci->cached_sitd_list); in sitd_complete()
2285 int status = -EINVAL; in sitd_submit()
2293 return -ENOMEM; in sitd_submit()
2295 if (urb->interval != stream->ps.period) { in sitd_submit()
2296 ehci_dbg(ehci, "can't change iso interval %d --> %d\n", in sitd_submit()
2297 stream->ps.period, urb->interval); in sitd_submit()
2303 "submit %p dev%s ep%d%s-iso len %d\n", in sitd_submit()
2304 urb, urb->dev->devpath, in sitd_submit()
2305 usb_pipeendpoint(urb->pipe), in sitd_submit()
2306 usb_pipein(urb->pipe) ? "in" : "out", in sitd_submit()
2307 urb->transfer_buffer_length); in sitd_submit()
2318 spin_lock_irqsave(&ehci->lock, flags); in sitd_submit()
2320 status = -ESHUTDOWN; in sitd_submit()
2328 sitd_link_urb(ehci, urb, ehci->periodic_size << 3, stream); in sitd_submit()
2336 spin_unlock_irqrestore(&ehci->lock, flags); in sitd_submit()
2341 /*-------------------------------------------------------------------------*/
2346 unsigned fmask = ehci->periodic_size - 1; in scan_isoc()
2354 * Touches as few pages as possible: cache-friendly. in scan_isoc()
2356 if (ehci->rh_state >= EHCI_RH_RUNNING) { in scan_isoc()
2361 now_frame = (ehci->last_iso_frame - 1) & fmask; in scan_isoc()
2364 ehci->now_frame = now_frame; in scan_isoc()
2366 frame = ehci->last_iso_frame; in scan_isoc()
2370 q_p = &ehci->pshadow[frame]; in scan_isoc()
2371 hw_p = &ehci->periodic[frame]; in scan_isoc()
2372 q.ptr = q_p->ptr; in scan_isoc()
2388 if (q.itd->hw_transaction[uf] & in scan_isoc()
2393 q_p = &q.itd->itd_next; in scan_isoc()
2394 hw_p = &q.itd->hw_next; in scan_isoc()
2396 q.itd->hw_next); in scan_isoc()
2408 *q_p = q.itd->itd_next; in scan_isoc()
2409 if (!ehci->use_dummy_qh || in scan_isoc()
2410 q.itd->hw_next != EHCI_LIST_END(ehci)) in scan_isoc()
2411 *hw_p = q.itd->hw_next; in scan_isoc()
2413 *hw_p = cpu_to_hc32(ehci, ehci->dummy->qh_dma); in scan_isoc()
2414 type = Q_NEXT_TYPE(ehci, q.itd->hw_next); in scan_isoc()
2429 && (q.sitd->hw_results & SITD_ACTIVE(ehci))) { in scan_isoc()
2431 q_p = &q.sitd->sitd_next; in scan_isoc()
2432 hw_p = &q.sitd->hw_next; in scan_isoc()
2433 type = Q_NEXT_TYPE(ehci, q.sitd->hw_next); in scan_isoc()
2443 *q_p = q.sitd->sitd_next; in scan_isoc()
2444 if (!ehci->use_dummy_qh || in scan_isoc()
2445 q.sitd->hw_next != EHCI_LIST_END(ehci)) in scan_isoc()
2446 *hw_p = q.sitd->hw_next; in scan_isoc()
2448 *hw_p = cpu_to_hc32(ehci, ehci->dummy->qh_dma); in scan_isoc()
2449 type = Q_NEXT_TYPE(ehci, q.sitd->hw_next); in scan_isoc()
2467 if (unlikely(modified && ehci->isoc_count > 0)) in scan_isoc()
2476 ehci->last_iso_frame = frame; in scan_isoc()