20  * It keeps track of every ITD (or SITD) that's linked, and holds enough
28  * @periodic: host pointer to qh/itd/sitd
44 		return &periodic->sitd->sitd_next;  in periodic_next_shadow()
457 				if (same_tt(dev, here.sitd->urb->dev)) {  in tt_no_collision()
460 					mask = hc32_to_cpu(ehci, here.sitd  in tt_no_collision()
467 				type = Q_NEXT_TYPE(ehci, here.sitd->hw_next);  in tt_no_collision()
468 				here = here.sitd->sitd_next;  in tt_no_collision()
999 /* ehci_iso_stream ops work with both ITD and SITD */
1040 	/* knows about ITD vs SITD */  in iso_stream_init()
1163 /* ehci_iso_sched ops can be ITD-only or SITD-only */
1996 	/* figure out per-frame sitd fields that we'll need later  in sitd_sched_init()
2039 	struct ehci_sitd	*sitd;  in sitd_urb_transaction()  local
2056 		 * for IN (using sitd->hw_backpointer, like a FSTN), which  in sitd_urb_transaction()
2065 			sitd = list_first_entry(&stream->free_list,  in sitd_urb_transaction()
2067 			if (sitd->frame == ehci->now_frame)  in sitd_urb_transaction()
2069 			list_del(&sitd->sitd_list);  in sitd_urb_transaction()
2070 			sitd_dma = sitd->sitd_dma;  in sitd_urb_transaction()
2074 			sitd = dma_pool_alloc(ehci->sitd_pool, mem_flags,  in sitd_urb_transaction()
2077 			if (!sitd) {  in sitd_urb_transaction()
2084 		memset(sitd, 0, sizeof(*sitd));  in sitd_urb_transaction()
2085 		sitd->sitd_dma = sitd_dma;  in sitd_urb_transaction()
2086 		sitd->frame = NO_FRAME;  in sitd_urb_transaction()
2087 		list_add(&sitd->sitd_list, &iso_sched->td_list);  in sitd_urb_transaction()
2104 	struct ehci_sitd	*sitd,  in sitd_patch()  argument
2112 	sitd->hw_next = EHCI_LIST_END(ehci);  in sitd_patch()
2113 	sitd->hw_fullspeed_ep = stream->address;  in sitd_patch()
2114 	sitd->hw_uframe = stream->splits;  in sitd_patch()
2115 	sitd->hw_results = uf->transaction;  in sitd_patch()
2116 	sitd->hw_backpointer = EHCI_LIST_END(ehci);  in sitd_patch()
2119 	sitd->hw_buf[0] = cpu_to_hc32(ehci, bufp);  in sitd_patch()
2120 	sitd->hw_buf_hi[0] = cpu_to_hc32(ehci, bufp >> 32);  in sitd_patch()
2122 	sitd->hw_buf[1] = cpu_to_hc32(ehci, uf->buf1);  in sitd_patch()
2125 	sitd->hw_buf_hi[1] = cpu_to_hc32(ehci, bufp >> 32);  in sitd_patch()
2126 	sitd->index = index;  in sitd_patch()
2130 sitd_link(struct ehci_hcd *ehci, unsigned frame, struct ehci_sitd *sitd)  in sitd_link()  argument
2132 	/* note: sitd ordering could matter (CSPLIT then SSPLIT) */  in sitd_link()
2133 	sitd->sitd_next = ehci->pshadow[frame];  in sitd_link()
2134 	sitd->hw_next = ehci->periodic[frame];  in sitd_link()
2135 	ehci->pshadow[frame].sitd = sitd;  in sitd_link()
2136 	sitd->frame = frame;  in sitd_link()
2138 	ehci->periodic[frame] = cpu_to_hc32(ehci, sitd->sitd_dma | Q_TYPE_SITD);  in sitd_link()
2152 	struct ehci_sitd	*sitd;  in sitd_link_urb()  local
2169 	for (packet = sched->first_packet, sitd = NULL;  in sitd_link_urb()
2178 		sitd = list_entry(sched->td_list.next,  in sitd_link_urb()
2180 		list_move_tail(&sitd->sitd_list, &stream->td_list);  in sitd_link_urb()
2181 		sitd->stream = stream;  in sitd_link_urb()
2182 		sitd->urb = urb;  in sitd_link_urb()
2184 		sitd_patch(ehci, stream, sitd, sched, packet);  in sitd_link_urb()
2186 				sitd);  in sitd_link_urb()
2205 /* Process and recycle a completed SITD.  Return true iff its urb completed,
2215 static bool sitd_complete(struct ehci_hcd *ehci, struct ehci_sitd *sitd)  in sitd_complete()  argument
2217 	struct urb				*urb = sitd->urb;  in sitd_complete()
2221 	struct ehci_iso_stream			*stream = sitd->stream;  in sitd_complete()
2224 	urb_index = sitd->index;  in sitd_complete()
2226 	t = hc32_to_cpup(ehci, &sitd->hw_results);  in sitd_complete()
2253 	 * ASSERT: it's really the last sitd for this urb  in sitd_complete()
2254 	 * list_for_each_entry (sitd, &stream->td_list, sitd_list)  in sitd_complete()
2255 	 *	 BUG_ON(sitd->urb == urb);  in sitd_complete()
2277 	sitd->urb = NULL;  in sitd_complete()
2280 	list_move_tail(&sitd->sitd_list, &stream->free_list);  in sitd_complete()
2432 			 * If this SITD is still active, leave it for  in scan_isoc()
2440 				&& (q.sitd->hw_results & SITD_ACTIVE(ehci))) {  in scan_isoc()
2442 				q_p = &q.sitd->sitd_next;  in scan_isoc()
2443 				hw_p = &q.sitd->hw_next;  in scan_isoc()
2444 				type = Q_NEXT_TYPE(ehci, q.sitd->hw_next);  in scan_isoc()
2454 			*q_p = q.sitd->sitd_next;  in scan_isoc()
2456 					q.sitd->hw_next != EHCI_LIST_END(ehci))  in scan_isoc()
2457 				*hw_p = q.sitd->hw_next;  in scan_isoc()
2460 			type = Q_NEXT_TYPE(ehci, q.sitd->hw_next);  in scan_isoc()
2462 			modified = sitd_complete(ehci, q.sitd);  in scan_isoc()