xhci(4): Make sure allocated bandwidth is freed in hardware by unconfiguring endpoint.
MFC after: 1 week Sponsored by: NVIDIA Networking
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@ -4030,7 +4030,47 @@ xhci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
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static void
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xhci_ep_uninit(struct usb_device *udev, struct usb_endpoint *ep)
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{
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struct xhci_softc *sc = XHCI_BUS2SC(udev->bus);
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const struct usb_endpoint_descriptor *edesc = ep->edesc;
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struct usb_page_search buf_inp;
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struct usb_page_cache *pcinp;
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uint32_t mask;
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uint8_t index;
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uint8_t epno;
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usb_error_t err;
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if (udev->parent_hub == NULL) {
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/* root HUB has special endpoint handling */
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return;
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}
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if ((edesc->bEndpointAddress & UE_ADDR) == 0) {
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/* control endpoint is never unconfigured */
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return;
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}
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XHCI_CMD_LOCK(sc);
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index = udev->controller_slot_id;
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epno = XHCI_EPNO2EPID(edesc->bEndpointAddress);
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mask = 1U << epno;
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if (sc->sc_hw.devs[index].ep_configured & mask) {
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USB_BUS_LOCK(udev->bus);
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xhci_configure_mask(udev, mask, 1);
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USB_BUS_UNLOCK(udev->bus);
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pcinp = &sc->sc_hw.devs[index].input_pc;
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usbd_get_page(pcinp, 0, &buf_inp);
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err = xhci_cmd_configure_ep(sc, buf_inp.physaddr, 0, index);
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if (err) {
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DPRINTF("Unconfiguring endpoint failed: %d\n", err);
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} else {
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USB_BUS_LOCK(udev->bus);
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sc->sc_hw.devs[index].ep_configured &= ~mask;
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USB_BUS_UNLOCK(udev->bus);
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}
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}
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XHCI_CMD_UNLOCK(sc);
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}
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static void
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