usb/host/ohci-q.c

41 finish_urb(struct ohci_hcd *ohci, struct urb *urb, int status)
46 	struct usb_host_endpoint *ep = urb->ep;
49 	// ASSERT (urb->hcpriv != 0);
52 	urb_free_priv (ohci, urb->hcpriv);
53 	urb->hcpriv = NULL;
57 	switch (usb_pipetype (urb->pipe)) {
72 	/* urb->complete() can reenter this HCD */
73 	usb_hcd_unlink_urb_from_ep(ohci_to_hcd(ohci), urb);
75 	usb_hcd_giveback_urb(ohci_to_hcd(ohci), urb, status);
92 		urb = list_first_entry(&ep->urb_list, struct urb, urb_list);
93 		urb_priv = urb->hcpriv;
518 	struct urb *urb, int index)
521 	struct urb_priv		*urb_priv = urb->hcpriv;
527 	/* aim for only one interrupt per urb.  mostly applies to control
528 	 * and iso; other urbs rarely need more than one TD per urb.
535 	 * interrupts ... increasing per-urb latency by sharing interrupts.
539 			|| (urb->transfer_flags & URB_NO_INTERRUPT))
552 	td->urb = urb;
593 	struct urb	*urb
595 	struct urb_priv	*urb_priv = urb->hcpriv;
598 	int		data_len = urb->transfer_buffer_length;
601 	int		is_out = usb_pipeout (urb->pipe);
610 	if (!usb_gettoggle (urb->dev, usb_pipeendpoint (urb->pipe), is_out)) {
611 		usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe),
618 	i = urb->num_mapped_sgs;
620 		sg = urb->sg;
624 		 * urb->transfer_buffer_length may be smaller than the
631 			data = urb->transfer_dma;
661 				if (!(urb->transfer_flags & URB_SHORT_NOT_OK))
664 			td_fill(ohci, info, data, n, urb, cnt);
679 		if ((urb->transfer_flags & URB_ZERO_PACKET)
681 			td_fill (ohci, info, 0, 0, urb, cnt);
696 		td_fill (ohci, info, urb->setup_dma, 8, urb, cnt++);
701 			td_fill (ohci, info, data, data_len, urb, cnt++);
706 		td_fill (ohci, info, data, 0, urb, cnt++);
717 		for (cnt = urb_priv->td_cnt; cnt < urb->number_of_packets;
719 			int	frame = urb->start_frame;
724 			frame += cnt * urb->interval;
727 				data + urb->iso_frame_desc [cnt].offset,
728 				urb->iso_frame_desc [cnt].length, urb, cnt);
755 /* calculate transfer length/status and update the urb */
756 static int td_done(struct ohci_hcd *ohci, struct urb *urb, struct td *td)
777 		if (usb_pipeout (urb->pipe))
778 			dlen = urb->iso_frame_desc [td->index].length;
785 		urb->actual_length += dlen;
786 		urb->iso_frame_desc [td->index].actual_length = dlen;
787 		urb->iso_frame_desc [td->index].status = cc_to_error [cc];
791 				"urb %p iso td %p (%d) len %d cc %d\n",
792 				urb, td, 1 + td->index, dlen, cc);
799 		int	type = usb_pipetype (urb->pipe);
806 				&& !(urb->transfer_flags & URB_SHORT_NOT_OK))
814 				urb->actual_length += tdBE - td->data_dma + 1;
816 				urb->actual_length +=
823 				"urb %p td %p (%d) cc %d, len=%d/%d\n",
824 				urb, td, 1 + td->index, cc,
825 				urb->actual_length,
826 				urb->transfer_buffer_length);
835 	struct urb		*urb = td->urb;
836 	urb_priv_t		*urb_priv = urb->hcpriv;
842 	 * until its urb->complete() has a chance to clean up.
848 	/* Get rid of all later tds from this urb.  We don't have
858 		if (next->urb != urb)
862 		 * this urb had one of them, this td wasn't the last td
880 		if ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)
884 		if (usb_pipecontrol (urb->pipe))
889 			"urb %p path %s ep%d%s %08x cc %d --> status %d\n",
890 			urb, urb->dev->devpath,
891 			usb_pipeendpoint (urb->pipe),
892 			usb_pipein (urb->pipe) ? "in" : "out",
960 		 * and dequeue any other TDs from this urb.
1028 		 * another (earlier) urb
1039 			struct urb	*urb;
1045 			urb = td->urb;
1046 			urb_priv = td->urb->hcpriv;
1048 			if (!urb->unlinked) {
1069 			td_done (ohci, urb, td);
1075 				finish_urb(ohci, urb, 0);
1152 	struct urb	*urb = td->urb;
1153 	urb_priv_t	*urb_priv = urb->hcpriv;
1158 	status = td_done(ohci, urb, td);
1161 	/* If all this urb's TDs are done, call complete() */
1163 		finish_urb(ohci, urb, status);