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[usb] Use generic refill framework for USB hub interrupt endpoints 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2015-02-12 15:15:57 +00:00
parent 17fc79425e
commit ebe433e795
2 changed files with 7 additions and 51 deletions
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56
src/drivers/usb/usbhub.c
View File

@ -40,27 +40,14 @@ FILE_LICENCE ( GPL2_OR_LATER );
* @v hubdev Hub device
*/
static void hub_refill ( struct usb_hub_device *hubdev ) {
struct io_buffer *iobuf;
size_t mtu = hubdev->intr.mtu;
int rc;
/* Enqueue any available I/O buffers */
while ( ( iobuf = list_first_entry ( &hubdev->intrs, struct io_buffer,
list ) ) ) {
/* Reset size */
iob_put ( iobuf, ( mtu - iob_len ( iobuf ) ) );
/* Enqueue I/O buffer */
if ( ( rc = usb_stream ( &hubdev->intr, iobuf, 0 ) ) != 0 ) {
DBGC ( hubdev, "HUB %s could not enqueue interrupt: "
"%s\n", hubdev->name, strerror ( rc ) );
/* Leave in available list and wait for next refill */
return;
}
/* Remove from available list */
list_del ( &iobuf->list );
/* Refill interrupt endpoint */
if ( ( rc = usb_refill ( &hubdev->intr ) ) != 0 ) {
DBGC ( hubdev, "HUB %s could not refill interrupt: %s\n",
hubdev->name, strerror ( rc ) );
/* Continue attempting to refill */
return;
}
/* Stop refill process */
@ -119,9 +106,6 @@ static void hub_complete ( struct usb_endpoint *ep,
}
done:
/* Return I/O buffer to available list */
list_add_tail ( &iobuf->list, &hubdev->intrs );
/* Start refill process */
process_add ( &hubdev->refill );
}
@ -140,8 +124,6 @@ static struct usb_endpoint_driver_operations usb_hub_intr_operations = {
static int hub_open ( struct usb_hub *hub ) {
struct usb_hub_device *hubdev = usb_hub_get_drvdata ( hub );
struct usb_device *usb = hubdev->usb;
struct io_buffer *iobuf;
struct io_buffer *tmp;
unsigned int i;
int rc;
@ -156,16 +138,6 @@ static int hub_open ( struct usb_hub *hub ) {
}
}
/* Allocate I/O buffers */
for ( i = 0 ; i < USB_HUB_INTR_FILL ; i++ ) {
iobuf = alloc_iob ( hubdev->intr.mtu );
if ( ! iobuf ) {
rc = -ENOMEM;
goto err_alloc_iob;
}
list_add ( &iobuf->list, &hubdev->intrs );
}
/* Open interrupt endpoint */
if ( ( rc = usb_endpoint_open ( &hubdev->intr ) ) != 0 ) {
DBGC ( hubdev, "HUB %s could not register interrupt: %s\n",
@ -183,11 +155,6 @@ static int hub_open ( struct usb_hub *hub ) {
usb_endpoint_close ( &hubdev->intr );
err_open:
err_alloc_iob:
list_for_each_entry_safe ( iobuf, tmp, &hubdev->intrs, list ) {
list_del ( &iobuf->list );
free_iob ( iobuf );
}
err_power:
return rc;
}
@ -199,20 +166,12 @@ static int hub_open ( struct usb_hub *hub ) {
*/
static void hub_close ( struct usb_hub *hub ) {
struct usb_hub_device *hubdev = usb_hub_get_drvdata ( hub );
struct io_buffer *iobuf;
struct io_buffer *tmp;
/* Close interrupt endpoint */
usb_endpoint_close ( &hubdev->intr );
/* Stop refill process */
process_del ( &hubdev->refill );
/* Free I/O buffers */
list_for_each_entry_safe ( iobuf, tmp, &hubdev->intrs, list ) {
list_del ( &iobuf->list );
free_iob ( iobuf );
}
}
/**
@ -415,7 +374,7 @@ static int hub_probe ( struct usb_function *func,
hubdev->features =
( enhanced ? USB_HUB_FEATURES_ENHANCED : USB_HUB_FEATURES );
usb_endpoint_init ( &hubdev->intr, usb, &usb_hub_intr_operations );
INIT_LIST_HEAD ( &hubdev->intrs );
usb_refill_init ( &hubdev->intr, 0, USB_HUB_INTR_FILL );
process_init_stopped ( &hubdev->refill, &hub_refill_desc, NULL );
/* Locate hub interface descriptor */
@ -510,7 +469,6 @@ static void hub_remove ( struct usb_function *func ) {
/* Unregister hub */
unregister_usb_hub ( hubdev->hub );
assert ( ! process_running ( &hubdev->refill ) );
assert ( list_empty ( &hubdev->intrs ) );
/* Free hub */
free_usb_hub ( hubdev->hub );

2
src/drivers/usb/usbhub.h
View File

@ -227,8 +227,6 @@ struct usb_hub_device {
/** Interrupt endpoint */
struct usb_endpoint intr;
/** Recycled interrupt I/O buffers */
struct list_head intrs;
/** Interrupt endpoint refill process */
struct process refill;
};