static int tmsi_release_dev(struct tmsi_data* dev) {
int i;
if (!dev)
return -ENODEV;
// Unlink current receiving bulk URB
for (i = 0; i < BULK_RECV_URBS; ++i)
free_urb(dev->bulk_recv_urb[i]);
// Unlink current receiving isochronous URB's
for (i = ISOC_RECV_URBS-1; i>=0; --i)
free_urb(dev->isoc_recv_urb[i]);
if (dev->device_open > 0)
dev->device_open = 0;
// Remove buffer
kfifo_reset(dev->packet_buffer);
kfifo_free(dev->packet_buffer);
up(dev->fifo_sem);
kfree(dev->fifo_sem);
kfree(dev->release_sem);
/* decrement the count on our device */
kref_put(&dev->kref, tmsi_delete);
info("Tmsi device realese() success\n");
dev->releasing = 0;
return 0;
}
void zd_usb_disable_rx(struct zd_usb *usb)
{
int i;
unsigned long flags;
struct urb **urbs;
unsigned int count;
struct zd_usb_rx *rx = &usb->rx;
spin_lock_irqsave(&rx->lock, flags);
urbs = rx->urbs;
count = rx->urbs_count;
spin_unlock_irqrestore(&rx->lock, flags);
if (!urbs)
return;
for (i = 0; i < count; i++) {
usb_kill_urb(urbs[i]);
free_urb(urbs[i]);
}
kfree(urbs);
spin_lock_irqsave(&rx->lock, flags);
rx->urbs = NULL;
rx->urbs_count = 0;
spin_unlock_irqrestore(&rx->lock, flags);
}
/*
* Returns zero if the message was successfully queued, or a negative errno
* otherwise.
*/
static int message_send(struct gb_host_device *hd, u16 cport_id,
struct gb_message *message, gfp_t gfp_mask)
{
struct es2_ap_dev *es2 = hd_to_es2(hd);
struct usb_device *udev = es2->usb_dev;
size_t buffer_size;
int retval;
struct urb *urb;
int ep_pair;
unsigned long flags;
/*
* The data actually transferred will include an indication
* of where the data should be sent. Do one last check of
* the target CPort id before filling it in.
*/
if (!cport_id_valid(hd, cport_id)) {
dev_err(&udev->dev, "invalid destination cport 0x%02x\n",
cport_id);
return -EINVAL;
}
/* Find a free urb */
urb = next_free_urb(es2, gfp_mask);
if (!urb)
return -ENOMEM;
spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
message->hcpriv = urb;
spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
/* Pack the cport id into the message header */
gb_message_cport_pack(message->header, cport_id);
buffer_size = sizeof(*message->header) + message->payload_size;
ep_pair = cport_to_ep_pair(es2, cport_id);
usb_fill_bulk_urb(urb, udev,
usb_sndbulkpipe(udev,
es2->cport_out[ep_pair].endpoint),
message->buffer, buffer_size,
cport_out_callback, message);
urb->transfer_flags |= URB_ZERO_PACKET;
trace_gb_host_device_send(hd, cport_id, buffer_size);
retval = usb_submit_urb(urb, gfp_mask);
if (retval) {
dev_err(&udev->dev, "failed to submit out-urb: %d\n", retval);
spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
message->hcpriv = NULL;
spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
free_urb(es2, urb);
gb_message_cport_clear(message->header);
return retval;
}
return 0;
}
int zd_usb_enable_rx(struct zd_usb *usb)
{
int i, r;
struct zd_usb_rx *rx = &usb->rx;
struct urb **urbs;
dev_dbg_f(zd_usb_dev(usb), "\n");
r = -ENOMEM;
urbs = kcalloc(URBS_COUNT, sizeof(struct urb *), GFP_KERNEL);
if (!urbs)
goto error;
for (i = 0; i < URBS_COUNT; i++) {
urbs[i] = alloc_urb(usb);
if (!urbs[i])
goto error;
}
ZD_ASSERT(!irqs_disabled());
spin_lock_irq(&rx->lock);
if (rx->urbs) {
spin_unlock_irq(&rx->lock);
r = 0;
goto error;
}
rx->urbs = urbs;
rx->urbs_count = URBS_COUNT;
spin_unlock_irq(&rx->lock);
for (i = 0; i < URBS_COUNT; i++) {
r = usb_submit_urb(urbs[i], GFP_KERNEL);
if (r)
goto error_submit;
}
return 0;
error_submit:
for (i = 0; i < URBS_COUNT; i++) {
usb_kill_urb(urbs[i]);
}
spin_lock_irq(&rx->lock);
rx->urbs = NULL;
rx->urbs_count = 0;
spin_unlock_irq(&rx->lock);
error:
if (urbs) {
for (i = 0; i < URBS_COUNT; i++)
free_urb(urbs[i]);
}
return r;
}
int main(int argc, char* argv[])
{
struct urb urb;
file = stdin;
while(init_urb(&urb))
{
parse_urb_body(&urb);
update_reports(&urb);
free_urb(&urb);
}
return 0;
}
static void cport_out_callback(struct urb *urb)
{
struct gb_message *message = urb->context;
struct gb_host_device *hd = message->operation->connection->hd;
struct es2_ap_dev *es2 = hd_to_es2(hd);
int status = check_urb_status(urb);
unsigned long flags;
gb_message_cport_clear(message->header);
spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
message->hcpriv = NULL;
spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
/*
* Tell the submitter that the message send (attempt) is
* complete, and report the status.
*/
greybus_message_sent(hd, message, status);
free_urb(es2, urb);
}