/*
* Transfer one control message, without timeouts, but allowing early
* termination. Return codes are USB_STOR_XFER_xxx.
*/
int usb_stor_ctrl_transfer(struct us_data *us, unsigned int pipe,
u8 request, u8 requesttype, u16 value, u16 index,
void *data, u16 size)
{
int result;
US_DEBUGP("%s: rq=%02x rqtype=%02x value=%04x index=%02x len=%u\n",
__FUNCTION__, request, requesttype,
value, index, size);
/* fill in the devrequest structure */
us->cr->bRequestType = requesttype;
us->cr->bRequest = request;
us->cr->wValue = cpu_to_le16(value);
us->cr->wIndex = cpu_to_le16(index);
us->cr->wLength = cpu_to_le16(size);
/* fill and submit the URB */
usb_fill_control_urb(us->current_urb, us->pusb_dev, pipe,
(unsigned char*) us->cr, data, size,
usb_stor_blocking_completion, NULL);
result = usb_stor_msg_common(us, 0);
return interpret_urb_result(us, pipe, size, result,
us->current_urb->actual_length);
}
/*
* Transfer one control message, with timeouts, and allowing early
* termination. Return codes are usual -Exxx, *not* USB_STOR_XFER_xxx.
*/
int usb_stor_control_msg(struct us_data *us, unsigned int pipe,
u8 request, u8 requesttype, u16 value, u16 index,
void *data, u16 size, int timeout)
{
int status;
US_DEBUGP("%s: rq=%02x rqtype=%02x value=%04x index=%02x len=%u\n",
__FUNCTION__, request, requesttype,
value, index, size);
/* fill in the devrequest structure */
us->cr->bRequestType = requesttype;
us->cr->bRequest = request;
us->cr->wValue = cpu_to_le16(value);
us->cr->wIndex = cpu_to_le16(index);
us->cr->wLength = cpu_to_le16(size);
/* fill and submit the URB */
usb_fill_control_urb(us->current_urb, us->pusb_dev, pipe,
(unsigned char*) us->cr, data, size,
usb_stor_blocking_completion, NULL);
status = usb_stor_msg_common(us, timeout);
/* return the actual length of the data transferred if no error */
if (status == 0)
status = us->current_urb->actual_length;
return status;
}
//----- usb_stor_bulk_transfer_buf() ---------------------
int usb_stor_bulk_transfer_buf(struct us_data *us, unsigned int pipe,
void *buf, unsigned int length, unsigned int *act_len)
{
int result;
//printk("transport --- usb_stor_bulk_transfer_buf\n");
/* fill and submit the URB */
usb_fill_bulk_urb(us->current_urb, us->pusb_dev, pipe, buf, length, usb_stor_blocking_completion, NULL);
result = usb_stor_msg_common(us, 0);
/* store the actual length of the data transferred */
if (act_len)
*act_len = us->current_urb->actual_length;
return interpret_urb_result(us, pipe, length, result, us->current_urb->actual_length);
}
int usb_stor_bulk_transfer_buf(struct us_data *us, unsigned int pipe,
void *buf, unsigned int length, unsigned int *act_len)
{
int result;
US_DEBUGP("%s: xfer %u bytes\n", __func__, length);
usb_fill_bulk_urb(us->current_urb, us->pusb_dev, pipe, buf, length,
usb_stor_blocking_completion, NULL);
result = usb_stor_msg_common(us, 0);
if (act_len)
*act_len = us->current_urb->actual_length;
return interpret_urb_result(us, pipe, length, result,
us->current_urb->actual_length);
}
static int usb_stor_intr_transfer(struct us_data *us, void *buf,
unsigned int length)
{
int result;
unsigned int pipe = us->recv_intr_pipe;
unsigned int maxp;
US_DEBUGP("%s: xfer %u bytes\n", __func__, length);
maxp = usb_maxpacket(us->pusb_dev, pipe, usb_pipeout(pipe));
if (maxp > length)
maxp = length;
usb_fill_int_urb(us->current_urb, us->pusb_dev, pipe, buf,
maxp, usb_stor_blocking_completion, NULL,
us->ep_bInterval);
result = usb_stor_msg_common(us, 0);
return interpret_urb_result(us, pipe, length, result,
us->current_urb->actual_length);
}
/*
* Receive one interrupt buffer, without timeouts, but allowing early
* termination. Return codes are USB_STOR_XFER_xxx.
*
* This routine always uses us->recv_intr_pipe as the pipe and
* us->ep_bInterval as the interrupt interval.
*/
static int usb_stor_intr_transfer(struct us_data *us, void *buf,
unsigned int length)
{
int result;
unsigned int pipe = us->recv_intr_pipe;
unsigned int maxp;
usb_stor_dbg(us, "xfer %u bytes\n", length);
/* calculate the max packet size */
maxp = usb_maxpacket(us->pusb_dev, pipe, usb_pipeout(pipe));
if (maxp > length)
maxp = length;
/* fill and submit the URB */
usb_fill_int_urb(us->current_urb, us->pusb_dev, pipe, buf,
maxp, usb_stor_blocking_completion, NULL,
us->ep_bInterval);
result = usb_stor_msg_common(us, 0);
return interpret_urb_result(us, pipe, length, result,
us->current_urb->actual_length);
}
