static int usb_bulk_urb_init(struct usb_data_stream *stream)
{
int i, j;
if ((i = usb_allocate_stream_buffers(stream,stream->props.count,
stream->props.u.bulk.buffersize)) < 0)
return i;
/* allocate the URBs */
for (i = 0; i < stream->props.count; i++) {
stream->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
if (!stream->urb_list[i]) {
deb_mem("not enough memory for urb_alloc_urb!.\n");
for (j = 0; j < i; j++)
usb_free_urb(stream->urb_list[i]);
return -ENOMEM;
}
usb_fill_bulk_urb( stream->urb_list[i], stream->udev,
usb_rcvbulkpipe(stream->udev,stream->props.endpoint),
stream->buf_list[i],
stream->props.u.bulk.buffersize,
usb_urb_complete, stream);
stream->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
stream->urb_list[i]->transfer_dma = stream->dma_addr[i];
stream->urbs_initialized++;
}
return 0;
}
static int usb_isoc_urb_init(struct usb_data_stream *stream)
{
int i,j;
if ((i = usb_allocate_stream_buffers(stream,stream->props.count,
stream->props.u.isoc.framesize*stream->props.u.isoc.framesperurb)) < 0)
return i;
/* allocate the URBs */
for (i = 0; i < stream->props.count; i++) {
struct urb *urb;
int frame_offset = 0;
stream->urb_list[i] = usb_alloc_urb(stream->props.u.isoc.framesperurb, GFP_ATOMIC);
if (!stream->urb_list[i]) {
deb_mem("not enough memory for urb_alloc_urb!\n");
for (j = 0; j < i; j++)
usb_free_urb(stream->urb_list[i]);
return -ENOMEM;
}
urb = stream->urb_list[i];
urb->dev = stream->udev;
urb->context = stream;
urb->complete = usb_urb_complete;
urb->pipe = usb_rcvisocpipe(stream->udev,stream->props.endpoint);
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
urb->interval = stream->props.u.isoc.interval;
urb->number_of_packets = stream->props.u.isoc.framesperurb;
urb->transfer_buffer_length = stream->buf_size;
urb->transfer_buffer = stream->buf_list[i];
urb->transfer_dma = stream->dma_addr[i];
for (j = 0; j < stream->props.u.isoc.framesperurb; j++) {
urb->iso_frame_desc[j].offset = frame_offset;
urb->iso_frame_desc[j].length = stream->props.u.isoc.framesize;
frame_offset += stream->props.u.isoc.framesize;
}
stream->urbs_initialized++;
}
return 0;
}
static int usb_bulk_urb_init(struct usb_data_stream *stream)
{
int i;
if ((i = usb_allocate_stream_buffers(stream,stream->props.count,
stream->props.u.bulk.buffersize)) < 0)
return i;
/* allocate the URBs */
for (i = 0; i < stream->props.count; i++) {
if ((stream->urb_list[i] = usb_alloc_urb(0,GFP_ATOMIC)) == NULL)
return -ENOMEM;
usb_fill_bulk_urb( stream->urb_list[i], stream->udev,
usb_rcvbulkpipe(stream->udev,stream->props.endpoint),
stream->buf_list[i],
stream->props.u.bulk.buffersize,
usb_urb_complete, stream);
stream->urb_list[i]->transfer_flags = 0;
stream->urbs_initialized++;
}
return 0;
}
