diff options
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
-rw-r--r-- | drivers/usb/host/xhci-ring.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index aac379e..ff5e6bc 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1072,7 +1072,12 @@ static int handle_tx_event(struct xhci_hcd *xhci, else status = 0; } else { - xhci_dbg(xhci, "Successful bulk transfer!\n"); + if (usb_endpoint_xfer_bulk(&td->urb->ep->desc)) + xhci_dbg(xhci, "Successful bulk " + "transfer!\n"); + else + xhci_dbg(xhci, "Successful interrupt " + "transfer!\n"); status = 0; } break; @@ -1464,6 +1469,47 @@ static void giveback_first_trb(struct xhci_hcd *xhci, int slot_id, ring_ep_doorbell(xhci, slot_id, ep_index); } +/* + * xHCI uses normal TRBs for both bulk and interrupt. When the interrupt + * endpoint is to be serviced, the xHC will consume (at most) one TD. A TD + * (comprised of sg list entries) can take several service intervals to + * transmit. + */ +int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, + struct urb *urb, int slot_id, unsigned int ep_index) +{ + struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, + xhci->devs[slot_id]->out_ctx, ep_index); + int xhci_interval; + int ep_interval; + + xhci_interval = EP_INTERVAL_TO_UFRAMES(ep_ctx->ep_info); + ep_interval = urb->interval; + /* Convert to microframes */ + if (urb->dev->speed == USB_SPEED_LOW || + urb->dev->speed == USB_SPEED_FULL) + ep_interval *= 8; + /* FIXME change this to a warning and a suggestion to use the new API + * to set the polling interval (once the API is added). + */ + if (xhci_interval != ep_interval) { + if (!printk_ratelimit()) + dev_dbg(&urb->dev->dev, "Driver uses different interval" + " (%d microframe%s) than xHCI " + "(%d microframe%s)\n", + ep_interval, + ep_interval == 1 ? "" : "s", + xhci_interval, + xhci_interval == 1 ? "" : "s"); + urb->interval = xhci_interval; + /* Convert back to frames for LS/FS devices */ + if (urb->dev->speed == USB_SPEED_LOW || + urb->dev->speed == USB_SPEED_FULL) + urb->interval /= 8; + } + return xhci_queue_bulk_tx(xhci, GFP_ATOMIC, urb, slot_id, ep_index); +} + static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, int slot_id, unsigned int ep_index) { |