usb/host/xen-hcd.c

28 	struct urb *urb;
53 	struct urb *urb;
58 	/* Virtual Host Controller has 4 urb queues */
556 	urbp->urb->hcpriv = NULL;
574 	info->shadow[id].urb = NULL;
642 static int xenhcd_map_urb_for_request(struct xenhcd_info *info, struct urb *urb,
650 	if (urb->transfer_buffer_length) {
651 		nr_buff_pages = xenhcd_count_pages(urb->transfer_buffer,
652 						urb->transfer_buffer_length);
654 		if (usb_pipeisoc(urb->pipe))
656 				&urb->iso_frame_desc[0],
658 				urb->number_of_packets);
671 		xenhcd_gnttab_map(info, urb->transfer_buffer,
672 				  urb->transfer_buffer_length, &gref_head,
674 				  usb_pipein(urb->pipe) ? 0 : GTF_readonly);
677 	req->pipe = xenhcd_pipe_urb_to_xenusb(urb->pipe, urb->dev->portnum);
679 	if (urb->transfer_flags & URB_SHORT_NOT_OK)
681 	req->buffer_length = urb->transfer_buffer_length;
684 	switch (usb_pipetype(urb->pipe)) {
686 		req->u.isoc.interval = urb->interval;
687 		req->u.isoc.start_frame = urb->start_frame;
688 		req->u.isoc.number_of_packets = urb->number_of_packets;
691 		xenhcd_gnttab_map(info, &urb->iso_frame_desc[0],
693 				  urb->number_of_packets,
698 		req->u.intr.interval = urb->interval;
701 		if (urb->setup_packet)
702 			memcpy(req->u.ctrl, urb->setup_packet, 8);
762 static void xenhcd_giveback_urb(struct xenhcd_info *info, struct urb *urb,
765 	struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
771 	if (urb->status == -EINPROGRESS)
772 		urb->status = xenhcd_translate_status(status);
775 	usb_hcd_giveback_urb(xenhcd_info_to_hcd(info), urb,
776 			     priv_status <= 0 ? priv_status : urb->status);
783 	struct urb *urb = urbp->urb;
795 						 urb->pipe, urb->dev->portnum));
798 		ret = xenhcd_map_urb_for_request(info, urb, req);
810 	info->shadow[id].urb = urb;
835 			xenhcd_giveback_urb(info, urbp->urb, -ESHUTDOWN);
854 			if (urbp->urb->status == -EINPROGRESS)
856 				xenhcd_giveback_urb(info, urbp->urb,
859 				xenhcd_giveback_urb(info, urbp->urb,
860 						    urbp->urb->status);
862 		info->shadow[req_id].urb = NULL;
866 		xenhcd_giveback_urb(info, urbp->urb, -ESHUTDOWN);
877 		xenhcd_giveback_urb(info, urbp->urb, urbp->urb->status);
913 	/* the urb is still in pending_submit queue */
941 			      struct xenusb_urb_response *res, struct urb *urb)
943 	if (unlikely(!urb))
946 	if (res->actual_length > urb->transfer_buffer_length)
947 		urb->actual_length = urb->transfer_buffer_length;
949 		urb->actual_length = 0;
951 		urb->actual_length = res->actual_length;
952 	urb->error_count = res->error_count;
953 	urb->start_frame = res->start_frame;
954 	xenhcd_giveback_urb(info, urb, res->status);
970 		xenhcd_set_error(info, "Illegal index on urb-ring");
979 			xenhcd_set_error(info, "Illegal data on urb-ring");
987 			xenhcd_res_to_urb(info, &res, info->shadow[id].urb);
1118 		xenbus_dev_fatal(dev, err, "allocating urb ring");
1179 	err = xenbus_printf(xbt, dev->nodename, "urb-ring-ref", "%u",
1182 		message = "writing urb-ring-ref";
1321  * non-error returns are promise to giveback the urb later
1323 static int xenhcd_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
1340 	urbp->urb = urb;
1341 	urb->hcpriv = urbp;
1346 	urb->unlinked = false;
1361 static int xenhcd_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
1370 	urbp = urb->hcpriv;
1402 	/* managing urb I/O */
1427 	/* managing urb I/O */
1491 		info->shadow[i].urb = NULL;