diff options
Diffstat (limited to 'drivers/usb/host/xhci.c')
| -rw-r--r-- | drivers/usb/host/xhci.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 25f42835..a9216195 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4980,6 +4980,61 @@ error: } EXPORT_SYMBOL_GPL(xhci_gen_setup); +dma_addr_t xhci_get_sec_event_ring_dma_addr(struct usb_hcd *hcd, + unsigned intr_num) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + if (intr_num > xhci->max_interrupters) { + xhci_err(xhci, "intr num %d > max intrs %d\n", intr_num, + xhci->max_interrupters); + return 0; + } + + if (!(xhci->xhc_state & XHCI_STATE_HALTED) && + xhci->sec_event_ring && xhci->sec_event_ring[intr_num] + && xhci->sec_event_ring[intr_num]->first_seg) + return xhci->sec_event_ring[intr_num]->first_seg->dma; + + return 0; +} + +dma_addr_t xhci_get_dcba_dma_addr(struct usb_hcd *hcd, + struct usb_device *udev) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + if (!(xhci->xhc_state & XHCI_STATE_HALTED) && xhci->dcbaa) + return xhci->dcbaa->dev_context_ptrs[udev->slot_id]; + + return 0; +} + +dma_addr_t xhci_get_xfer_ring_dma_addr(struct usb_hcd *hcd, + struct usb_device *udev, struct usb_host_endpoint *ep) +{ + int ret; + unsigned int ep_index; + struct xhci_virt_device *virt_dev; + + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + ret = xhci_check_args(hcd, udev, ep, 1, true, __func__); + if (ret <= 0) { + xhci_err(xhci, "%s: invalid args\n", __func__); + return 0; + } + + virt_dev = xhci->devs[udev->slot_id]; + ep_index = xhci_get_endpoint_index(&ep->desc); + + if (virt_dev->eps[ep_index].ring && + virt_dev->eps[ep_index].ring->first_seg) + return virt_dev->eps[ep_index].ring->first_seg->dma; + + return 0; +} + static const struct hc_driver xhci_hc_driver = { .description = "xhci-hcd", .product_desc = "xHCI Host Controller", @@ -5039,6 +5094,11 @@ static const struct hc_driver xhci_hc_driver = { .enable_usb3_lpm_timeout = xhci_enable_usb3_lpm_timeout, .disable_usb3_lpm_timeout = xhci_disable_usb3_lpm_timeout, .find_raw_port_number = xhci_find_raw_port_number, + .sec_event_ring_setup = xhci_sec_event_ring_setup, + .sec_event_ring_cleanup = xhci_sec_event_ring_cleanup, + .get_sec_event_ring_dma_addr = xhci_get_sec_event_ring_dma_addr, + .get_xfer_ring_dma_addr = xhci_get_xfer_ring_dma_addr, + .get_dcba_dma_addr = xhci_get_dcba_dma_addr, }; void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *)) |