static int hci_submit_urb (struct urb * urb)
{
hci_t * hci;
unsigned int pipe = urb->pipe;
unsigned long flags;
int ret;
if (!urb->dev || !urb->dev->bus || urb->hcpriv)
return -EINVAL;
if (usb_endpoint_halted (urb->dev,
usb_pipeendpoint (pipe), usb_pipeout (pipe)))
return -EPIPE;
hci = (hci_t *) urb->dev->bus->hcpriv;
/* a request to the virtual root hub */
if (usb_pipedevice (pipe) == hci->rh.devnum) {
return rh_submit_urb (urb);
}
if (urb_debug)
urb_print (urb, "SUB", usb_pipein (pipe));
/* queue the URB to its endpoint-queue */
spin_lock_irqsave (&usb_urb_lock, flags);
ret = hcs_urb_queue (hci, urb);
spin_unlock_irqrestore (&usb_urb_lock, flags);
return ret;
}
//transfer buffer must be aligned on an 8 bytes boundary
static int hci_submit_urb (urb_t * urb)
{
hci_t * hci;
unsigned int pipe = urb->pipe;
unsigned long flags;
int ret;
if (!urb->dev || !urb->dev->bus || urb->hcpriv) return -EINVAL;
#if BURST_TRANSFER_SIZE >= 8
if ( ((int)urb->transfer_buffer) & 7) {
if ( (urb->transfer_buffer_length >8) ||
( ( ((int)urb->transfer_buffer) & 1 ) && (urb->transfer_buffer_length >1) ) ) {
printk(KERN_ERR __FILE__ ": improper alignment, size %d bytes\n",urb->transfer_buffer_length);
return -EINVAL;
}
}
#endif
if (usb_endpoint_halted (urb->dev,
usb_pipeendpoint (pipe), usb_pipeout (pipe)))
return -EPIPE;
hci = (hci_t *) urb->dev->bus->hcpriv;
/* a request to the virtual root hub */
if (usb_pipedevice (pipe) == hci->rh.devnum) {
return rh_submit_urb (urb);
}
if (urb_debug)
urb_print (urb, "SUB", usb_pipein (pipe));
/* queue the URB to its endpoint-queue */
spin_lock_irqsave (&hci->urb_list_lock, flags);
ret = hcs_urb_queue (hci, urb);
spin_unlock_irqrestore (&hci->urb_list_lock, flags);
return ret;
}
static int hcs_return_urb (hci_t * hci, struct urb * urb, int resub_ok)
{
struct usb_device * dev = urb->dev;
int resubmit = 0;
if (urb_debug)
urb_print (urb, "RET", usb_pipeout (urb->pipe));
resubmit = urb->interval && resub_ok;
urb->dev = urb->hcpriv = NULL;
if (urb->complete)
urb->complete (urb); /* call complete */
if (resubmit) { /* requeue the URB */
urb->dev = dev;
hcs_urb_queue (hci, urb);
}
return 0;
}
static int hcs_return_urb (hci_t * hci, urb_t * urb, int resub_ok)
{
int resubmit = 0;
struct dmaWork* dw=NULL;
if (urb_debug)
urb_print (urb, "RET", usb_pipeout (urb->pipe));
resubmit = urb->interval && resub_ok;
if (!resubmit) {
urb->dev = NULL;
dw = urb->hcpriv;
urb->hcpriv = NULL;
}
if (urb->complete) {
if ((!resubmit)||!IntervalStatus(urb)) {
urb->complete (urb); /* call complete */
}
}
if (resubmit) { /* requeue the URB */
if (!usb_pipeint (urb->pipe) || (urb->interval==0)) {
urb->start_frame = hci->frame_no;
hcs_urb_queue (hci, urb);
} else {
urb->start_frame = hci->frame_no + urb->interval;
list_add (&urb->urb_list, &hci->waiting_intr_list);
hc116x_enable_sofint(hci);
}
} else {
if (dw) FreeDmaWork(hci,dw); //this also wakes anyone waiting on its destruction
}
return 0;
}
