Lines Matching refs:qh
79 qh_update (struct ehci_hcd *ehci, struct ehci_qh *qh, struct ehci_qtd *qtd) in qh_update() argument
81 struct ehci_qh_hw *hw = qh->hw; in qh_update()
84 WARN_ON(qh->qh_state != QH_STATE_IDLE); in qh_update()
97 is_out = qh->is_out; in qh_update()
99 if (unlikely(!usb_gettoggle(qh->ps.udev, epnum, is_out))) { in qh_update()
101 usb_settoggle(qh->ps.udev, epnum, is_out, 1); in qh_update()
113 qh_refresh (struct ehci_hcd *ehci, struct ehci_qh *qh) in qh_refresh() argument
117 qtd = list_entry(qh->qtd_list.next, struct ehci_qtd, qtd_list); in qh_refresh()
126 if (qh->hw->hw_token & ACTIVE_BIT(ehci)) { in qh_refresh()
127 qh->hw->hw_qtd_next = qtd->hw_next; in qh_refresh()
128 if (qh->should_be_inactive) in qh_refresh()
129 ehci_warn(ehci, "qh %p should be inactive!\n", qh); in qh_refresh()
131 qh_update(ehci, qh, qtd); in qh_refresh()
133 qh->should_be_inactive = 0; in qh_refresh()
138 static void qh_link_async(struct ehci_hcd *ehci, struct ehci_qh *qh);
144 struct ehci_qh *qh = ep->hcpriv; in ehci_clear_tt_buffer_complete() local
148 qh->clearing_tt = 0; in ehci_clear_tt_buffer_complete()
149 if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list) in ehci_clear_tt_buffer_complete()
151 qh_link_async(ehci, qh); in ehci_clear_tt_buffer_complete()
155 static void ehci_clear_tt_buffer(struct ehci_hcd *ehci, struct ehci_qh *qh, in ehci_clear_tt_buffer() argument
165 if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) { in ehci_clear_tt_buffer()
177 qh->clearing_tt = 1; in ehci_clear_tt_buffer()
281 static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh);
289 qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh) in qh_completions() argument
291 struct ehci_qtd *last, *end = qh->dummy; in qh_completions()
296 struct ehci_qh_hw *hw = qh->hw; in qh_completions()
308 state = qh->qh_state; in qh_completions()
309 qh->qh_state = QH_STATE_COMPLETING; in qh_completions()
315 qh->dequeue_during_giveback = 0; in qh_completions()
322 list_for_each_safe (entry, tmp, &qh->qtd_list) { in qh_completions()
361 qh); in qh_completions()
373 ++qh->xacterrs < QH_XACTERR_MAX && in qh_completions()
377 qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs); in qh_completions()
395 qh->unlink_reason |= QH_UNLINK_HALTED; in qh_completions()
410 qh->unlink_reason |= QH_UNLINK_SHORT_READ; in qh_completions()
425 qh->unlink_reason |= QH_UNLINK_SHUTDOWN; in qh_completions()
443 qh->qtd_list.next == &qtd->qtd_list && in qh_completions()
447 qh->should_be_inactive = 1; in qh_completions()
453 ehci_clear_tt_buffer(ehci, qh, urb, token); in qh_completions()
487 ehci_clear_tt_buffer(ehci, qh, urb, in qh_completions()
495 if (stopped && qtd->qtd_list.prev != &qh->qtd_list) { in qh_completions()
506 qh->xacterrs = 0; in qh_completions()
516 if (unlikely(qh->dequeue_during_giveback)) { in qh_completions()
525 qh->qh_state = state; in qh_completions()
543 qh->unlink_reason |= QH_UNLINK_DUMMY_OVERLAY; in qh_completions()
546 return qh->unlink_reason; in qh_completions()
765 struct ehci_qh *qh = ehci_qh_alloc (ehci, flags); in qh_make() local
774 if (!qh) in qh_make()
775 return qh; in qh_make()
808 qh->ps.usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH, in qh_make()
810 qh->ps.phase = NO_FRAME; in qh_make()
813 qh->ps.c_usecs = 0; in qh_make()
814 qh->gap_uf = 0; in qh_make()
825 qh->ps.period = urb->interval >> 3; in qh_make()
832 qh->ps.bw_uperiod = min_t(unsigned, tmp, urb->interval); in qh_make()
833 qh->ps.bw_period = qh->ps.bw_uperiod >> 3; in qh_make()
838 qh->gap_uf = 1 + usb_calc_bus_time (urb->dev->speed, in qh_make()
843 qh->ps.c_usecs = qh->ps.usecs + HS_USECS(0); in qh_make()
844 qh->ps.usecs = HS_USECS(1); in qh_make()
846 qh->ps.usecs += HS_USECS(1); in qh_make()
847 qh->ps.c_usecs = HS_USECS(0); in qh_make()
851 qh->ps.tt_usecs = NS_TO_US(think_time + in qh_make()
856 qh->ps.period = urb->interval; in qh_make()
864 qh->ps.bw_period = min_t(unsigned, tmp, urb->interval); in qh_make()
865 qh->ps.bw_uperiod = qh->ps.bw_period << 3; in qh_make()
870 qh->ps.udev = urb->dev; in qh_make()
871 qh->ps.ep = urb->ep; in qh_make()
935 qh_destroy(ehci, qh); in qh_make()
942 qh->qh_state = QH_STATE_IDLE; in qh_make()
943 hw = qh->hw; in qh_make()
946 qh->is_out = !is_input; in qh_make()
948 return qh; in qh_make()
972 WARN_ON(ehci->async->qh_next.qh || !list_empty(&ehci->async_unlink) || in disable_async()
981 static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh) in qh_link_async() argument
983 __hc32 dma = QH_NEXT(ehci, qh->qh_dma); in qh_link_async()
987 if (unlikely(qh->clearing_tt)) in qh_link_async()
990 WARN_ON(qh->qh_state != QH_STATE_IDLE); in qh_link_async()
993 qh_refresh(ehci, qh); in qh_link_async()
997 qh->qh_next = head->qh_next; in qh_link_async()
998 qh->hw->hw_next = head->hw->hw_next; in qh_link_async()
1001 head->qh_next.qh = qh; in qh_link_async()
1004 qh->qh_state = QH_STATE_LINKED; in qh_link_async()
1005 qh->xacterrs = 0; in qh_link_async()
1006 qh->unlink_reason = 0; in qh_link_async()
1028 struct ehci_qh *qh = NULL; in qh_append_tds() local
1031 qh = (struct ehci_qh *) *ptr; in qh_append_tds()
1032 if (unlikely (qh == NULL)) { in qh_append_tds()
1034 qh = qh_make (ehci, urb, GFP_ATOMIC); in qh_append_tds()
1035 *ptr = qh; in qh_append_tds()
1037 if (likely (qh != NULL)) { in qh_append_tds()
1051 qh->hw->hw_info1 &= ~qh_addr_mask; in qh_append_tds()
1070 dummy = qh->dummy; in qh_append_tds()
1078 list_splice_tail(qtd_list, &qh->qtd_list); in qh_append_tds()
1081 qh->dummy = qtd; in qh_append_tds()
1085 qtd = list_entry (qh->qtd_list.prev, in qh_append_tds()
1093 urb->hcpriv = qh; in qh_append_tds()
1096 return qh; in qh_append_tds()
1110 struct ehci_qh *qh = NULL; in submit_async() local
1137 qh = qh_append_tds(ehci, urb, qtd_list, epnum, &urb->ep->hcpriv); in submit_async()
1138 if (unlikely(qh == NULL)) { in submit_async()
1147 if (likely (qh->qh_state == QH_STATE_IDLE)) in submit_async()
1148 qh_link_async(ehci, qh); in submit_async()
1151 if (unlikely (qh == NULL)) in submit_async()
1257 static void single_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh) in single_unlink_async() argument
1262 qh->qh_state = QH_STATE_UNLINK_WAIT; in single_unlink_async()
1263 list_add_tail(&qh->unlink_node, &ehci->async_unlink); in single_unlink_async()
1267 while (prev->qh_next.qh != qh) in single_unlink_async()
1268 prev = prev->qh_next.qh; in single_unlink_async()
1270 prev->hw->hw_next = qh->hw->hw_next; in single_unlink_async()
1271 prev->qh_next = qh->qh_next; in single_unlink_async()
1272 if (ehci->qh_scan_next == qh) in single_unlink_async()
1273 ehci->qh_scan_next = qh->qh_next.qh; in single_unlink_async()
1313 struct ehci_qh *qh; in end_unlink_async() local
1318 qh = list_first_entry(&ehci->async_unlink, struct ehci_qh, in end_unlink_async()
1336 else if (qh->qh_state == QH_STATE_UNLINK) { in end_unlink_async()
1341 list_move_tail(&qh->unlink_node, &ehci->async_idle); in end_unlink_async()
1358 else if (qh->unlink_reason & (QH_UNLINK_HALTED | in end_unlink_async()
1363 else if ((qh->unlink_reason & QH_UNLINK_QUEUE_EMPTY) && in end_unlink_async()
1364 list_empty(&qh->qtd_list)) in end_unlink_async()
1368 else if (qh->hw->hw_token & cpu_to_hc32(ehci, QTD_STS_HALT)) in end_unlink_async()
1375 qh_current = qh->hw->hw_current; in end_unlink_async()
1376 qh_token = qh->hw->hw_token; in end_unlink_async()
1386 qh->qh_state = QH_STATE_UNLINK; in end_unlink_async()
1405 qh = list_first_entry(&ehci->async_idle, struct ehci_qh, in end_unlink_async()
1407 list_del(&qh->unlink_node); in end_unlink_async()
1409 qh->qh_state = QH_STATE_IDLE; in end_unlink_async()
1410 qh->qh_next.qh = NULL; in end_unlink_async()
1412 if (!list_empty(&qh->qtd_list)) in end_unlink_async()
1413 qh_completions(ehci, qh); in end_unlink_async()
1414 if (!list_empty(&qh->qtd_list) && in end_unlink_async()
1416 qh_link_async(ehci, qh); in end_unlink_async()
1422 static void start_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh);
1426 struct ehci_qh *qh; in unlink_empty_async() local
1431 for (qh = ehci->async->qh_next.qh; qh; qh = qh->qh_next.qh) { in unlink_empty_async()
1432 if (list_empty(&qh->qtd_list) && in unlink_empty_async()
1433 qh->qh_state == QH_STATE_LINKED) { in unlink_empty_async()
1435 if (qh->unlink_cycle != ehci->async_unlink_cycle) in unlink_empty_async()
1436 qh_to_unlink = qh; in unlink_empty_async()
1459 struct ehci_qh *qh; in unlink_empty_async_suspended() local
1461 while (ehci->async->qh_next.qh) { in unlink_empty_async_suspended()
1462 qh = ehci->async->qh_next.qh; in unlink_empty_async_suspended()
1463 WARN_ON(!list_empty(&qh->qtd_list)); in unlink_empty_async_suspended()
1464 single_unlink_async(ehci, qh); in unlink_empty_async_suspended()
1473 static void start_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh) in start_unlink_async() argument
1476 if (qh->qh_state != QH_STATE_LINKED) in start_unlink_async()
1479 single_unlink_async(ehci, qh); in start_unlink_async()
1487 struct ehci_qh *qh; in scan_async() local
1490 ehci->qh_scan_next = ehci->async->qh_next.qh; in scan_async()
1492 qh = ehci->qh_scan_next; in scan_async()
1493 ehci->qh_scan_next = qh->qh_next.qh; in scan_async()
1496 if (!list_empty(&qh->qtd_list)) { in scan_async()
1506 temp = qh_completions(ehci, qh); in scan_async()
1508 start_unlink_async(ehci, qh); in scan_async()
1509 } else if (list_empty(&qh->qtd_list) in scan_async()
1510 && qh->qh_state == QH_STATE_LINKED) { in scan_async()
1511 qh->unlink_cycle = ehci->async_unlink_cycle; in scan_async()