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xhci(4): Make sure allocated bandwidth is freed in hardware by unconfiguring endpoint.

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MFC after:	1 week
Sponsored by:	NVIDIA Networking
This commit is contained in:
Cheng, Huiming 2022-12-15 23:30:11 +01:00 committed by Hans Petter Selasky
parent e4611d2626
commit 8685d7b5cb
1 changed files with 40 additions and 0 deletions
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40
sys/dev/usb/controller/xhci.c
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@ -4030,7 +4030,47 @@ xhci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
static void
xhci_ep_uninit(struct usb_device *udev, struct usb_endpoint *ep)
{
struct xhci_softc *sc = XHCI_BUS2SC(udev->bus);
const struct usb_endpoint_descriptor *edesc = ep->edesc;
struct usb_page_search buf_inp;
struct usb_page_cache *pcinp;
uint32_t mask;
uint8_t index;
uint8_t epno;
usb_error_t err;
if (udev->parent_hub == NULL) {
/* root HUB has special endpoint handling */
return;
}
if ((edesc->bEndpointAddress & UE_ADDR) == 0) {
/* control endpoint is never unconfigured */
return;
}
XHCI_CMD_LOCK(sc);
index = udev->controller_slot_id;
epno = XHCI_EPNO2EPID(edesc->bEndpointAddress);
mask = 1U << epno;
if (sc->sc_hw.devs[index].ep_configured & mask) {
USB_BUS_LOCK(udev->bus);
xhci_configure_mask(udev, mask, 1);
USB_BUS_UNLOCK(udev->bus);
pcinp = &sc->sc_hw.devs[index].input_pc;
usbd_get_page(pcinp, 0, &buf_inp);
err = xhci_cmd_configure_ep(sc, buf_inp.physaddr, 0, index);
if (err) {
DPRINTF("Unconfiguring endpoint failed: %d\n", err);
} else {
USB_BUS_LOCK(udev->bus);
sc->sc_hw.devs[index].ep_configured &= ~mask;
USB_BUS_UNLOCK(udev->bus);
}
}
XHCI_CMD_UNLOCK(sc);
}
static void