svn commit: r367614 - head/sys/dev/usb/controller
Hans Petter Selasky
hselasky at FreeBSD.org
Thu Nov 12 09:15:08 UTC 2020
Author: hselasky
Date: Thu Nov 12 09:15:07 2020
New Revision: 367614
URL: https://svnweb.freebsd.org/changeset/base/367614
Log:
When doing a USB alternate setting on an USB interface we need to
re-configure the XHCI endpoint context.
Differential Revision: https://reviews.freebsd.org/D27174
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
Modified:
head/sys/dev/usb/controller/xhci.c
Modified: head/sys/dev/usb/controller/xhci.c
==============================================================================
--- head/sys/dev/usb/controller/xhci.c Thu Nov 12 02:52:01 2020 (r367613)
+++ head/sys/dev/usb/controller/xhci.c Thu Nov 12 09:15:07 2020 (r367614)
@@ -4020,6 +4020,9 @@ xhci_ep_init(struct usb_device *udev, struct usb_endpo
struct usb_endpoint *ep)
{
struct xhci_endpoint_ext *pepext;
+ struct xhci_softc *sc;
+ uint8_t index;
+ uint8_t epno;
DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d\n",
ep, udev->address, edesc->bEndpointAddress, udev->flags.usb_mode);
@@ -4036,6 +4039,18 @@ xhci_ep_init(struct usb_device *udev, struct usb_endpo
USB_BUS_LOCK(udev->bus);
pepext->trb_halted = 1;
pepext->trb_running = 0;
+
+ /*
+ * When doing an alternate setting, except for control
+ * endpoints, we need to re-configure the XHCI endpoint
+ * context:
+ */
+ if ((edesc->bEndpointAddress & UE_ADDR) != 0) {
+ sc = XHCI_BUS2SC(udev->bus);
+ index = udev->controller_slot_id;
+ epno = XHCI_EPNO2EPID(edesc->bEndpointAddress);
+ sc->sc_hw.devs[index].ep_configured &= ~(1U << epno);
+ }
USB_BUS_UNLOCK(udev->bus);
}
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