usb/host/ehci-sched.c

28  * @periodic: host pointer to qh/itd/sitd
41 		return &periodic->itd->itd_next;
438 				type = Q_NEXT_TYPE(ehci, here.itd->hw_next);
439 				here = here.itd->itd_next;
1191 	/* figure out per-uframe itd fields that we'll need later
1240 	struct ehci_itd		*itd;
1267 			itd = list_first_entry(&stream->free_list,
1269 			if (itd->frame == ehci->now_frame)
1271 			list_del(&itd->itd_list);
1272 			itd_dma = itd->itd_dma;
1276 			itd = dma_pool_alloc(ehci->itd_pool, mem_flags,
1279 			if (!itd) {
1286 		memset(itd, 0, sizeof(*itd));
1287 		itd->itd_dma = itd_dma;
1288 		itd->frame = NO_FRAME;
1289 		list_add(&itd->itd_list, &sched->td_list);
1666 		struct ehci_itd *itd)
1671 	itd->hw_next = EHCI_LIST_END(ehci);
1672 	itd->hw_bufp[0] = stream->buf0;
1673 	itd->hw_bufp[1] = stream->buf1;
1674 	itd->hw_bufp[2] = stream->buf2;
1677 		itd->index[i] = -1;
1685 	struct ehci_itd		*itd,
1692 	unsigned		pg = itd->pg;
1697 	itd->index[uframe] = index;
1699 	itd->hw_transaction[uframe] = uf->transaction;
1700 	itd->hw_transaction[uframe] |= cpu_to_hc32(ehci, pg << 12);
1701 	itd->hw_bufp[pg] |= cpu_to_hc32(ehci, uf->bufp & ~(u32)0);
1702 	itd->hw_bufp_hi[pg] |= cpu_to_hc32(ehci, (u32)(uf->bufp >> 32));
1708 		itd->pg = ++pg;
1709 		itd->hw_bufp[pg] |= cpu_to_hc32(ehci, bufp & ~(u32)0);
1710 		itd->hw_bufp_hi[pg] |= cpu_to_hc32(ehci, (u32)(bufp >> 32));
1715 itd_link(struct ehci_hcd *ehci, unsigned frame, struct ehci_itd *itd)
1732 	itd->itd_next = here;
1733 	itd->hw_next = *hw_p;
1734 	prev->itd = itd;
1735 	itd->frame = frame;
1737 	*hw_p = cpu_to_hc32(ehci, itd->itd_dma | Q_TYPE_ITD);
1751 	struct ehci_itd		*itd;
1767 	for (packet = iso_sched->first_packet, itd = NULL;
1769 		if (itd == NULL) {
1775 			itd = list_entry(iso_sched->td_list.next,
1777 			list_move_tail(&itd->itd_list, &stream->td_list);
1778 			itd->stream = stream;
1779 			itd->urb = urb;
1780 			itd_init(ehci, stream, itd);
1786 		itd_patch(ehci, itd, iso_sched, packet, uframe);
1795 			itd_link(ehci, frame & (ehci->periodic_size - 1), itd);
1796 			itd = NULL;
1821 static bool itd_complete(struct ehci_hcd *ehci, struct ehci_itd *itd)
1823 	struct urb				*urb = itd->urb;
1828 	struct ehci_iso_stream			*stream = itd->stream;
1833 		if (likely(itd->index[uframe] == -1))
1835 		urb_index = itd->index[uframe];
1838 		t = hc32_to_cpup(ehci, &itd->hw_transaction[uframe]);
1839 		itd->hw_transaction[uframe] = 0;
1873 	 * ASSERT: it's really the last itd for this urb
1874 	 * list_for_each_entry (itd, &stream->td_list, itd_list)
1875 	 *	 BUG_ON(itd->urb == urb);
1897 	itd->urb = NULL;
1900 	list_move_tail(&itd->itd_list, &stream->free_list);
2399 					if (q.itd->hw_transaction[uf] &
2404 					q_p = &q.itd->itd_next;
2405 					hw_p = &q.itd->hw_next;
2407 							q.itd->hw_next);
2419 			*q_p = q.itd->itd_next;
2421 					q.itd->hw_next != EHCI_LIST_END(ehci))
2422 				*hw_p = q.itd->hw_next;
2425 			type = Q_NEXT_TYPE(ehci, q.itd->hw_next);
2427 			modified = itd_complete(ehci, q.itd);