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[usb] Parse endpoint descriptor bInterval field

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-02-09 23:50:35 +00:00
parent cf153f60a5
commit 17aceb34da
4 changed files with 46 additions and 5 deletions
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10
src/drivers/usb/xhci.c
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@@ -1986,6 +1986,7 @@ static void xhci_configure_endpoint_input ( struct xhci_device *xhci,
/* Populate endpoint context */
ep_ctx = ( input + xhci_input_context_offset ( xhci, endpoint->ctx ) );
ep_ctx->interval = endpoint->interval;
ep_ctx->type = endpoint->type;
ep_ctx->burst = endpoint->ep->burst;
ep_ctx->mtu = cpu_to_le16 ( endpoint->ep->mtu );
@@ -2252,6 +2253,7 @@ static int xhci_endpoint_open ( struct usb_endpoint *ep ) {
struct xhci_endpoint *endpoint;
unsigned int ctx;
unsigned int type;
unsigned int interval;
int rc;
/* Calculate context index */
@@ -2265,6 +2267,13 @@ static int xhci_endpoint_open ( struct usb_endpoint *ep ) {
if ( ep->address & USB_DIR_IN )
type |= XHCI_EP_TYPE_IN;
/* Calculate interval */
if ( type & XHCI_EP_TYPE_PERIODIC ) {
interval = ( fls ( ep->interval ) - 1 );
} else {
interval = ep->interval;
}
/* Allocate and initialise structure */
endpoint = zalloc ( sizeof ( *endpoint ) );
if ( ! endpoint ) {
@@ -2278,6 +2287,7 @@ static int xhci_endpoint_open ( struct usb_endpoint *ep ) {
endpoint->ep = ep;
endpoint->ctx = ctx;
endpoint->type = type;
endpoint->interval = interval;
endpoint->context = ( ( ( void * ) slot->context ) +
xhci_device_context_offset ( xhci, ctx ) );