return 0;
}
+/* Once a hub descriptor is fetched for a device, we need to update the xHC's
+ * internal data structures for the device.
+ */
+int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
+ struct usb_tt *tt, gfp_t mem_flags)
+{
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ struct xhci_virt_device *vdev;
+ struct xhci_command *config_cmd;
+ struct xhci_input_control_ctx *ctrl_ctx;
+ struct xhci_slot_ctx *slot_ctx;
+ unsigned long flags;
+ unsigned think_time;
+ int ret;
+
+ /* Ignore root hubs */
+ if (!hdev->parent)
+ return 0;
+
+ vdev = xhci->devs[hdev->slot_id];
+ if (!vdev) {
+ xhci_warn(xhci, "Cannot update hub desc for unknown device.\n");
+ return -EINVAL;
+ }
+ config_cmd = xhci_alloc_command(xhci, true, mem_flags);
+ if (!config_cmd) {
+ xhci_dbg(xhci, "Could not allocate xHCI command structure.\n");
+ return -ENOMEM;
+ }
+
+ spin_lock_irqsave(&xhci->lock, flags);
+ xhci_slot_copy(xhci, config_cmd->in_ctx, vdev->out_ctx);
+ ctrl_ctx = xhci_get_input_control_ctx(xhci, config_cmd->in_ctx);
+ ctrl_ctx->add_flags |= SLOT_FLAG;
+ slot_ctx = xhci_get_slot_ctx(xhci, config_cmd->in_ctx);
+ slot_ctx->dev_info |= DEV_HUB;
+ if (tt->multi)
+ slot_ctx->dev_info |= DEV_MTT;
+ if (xhci->hci_version > 0x95) {
+ xhci_dbg(xhci, "xHCI version %x needs hub "
+ "TT think time and number of ports\n",
+ (unsigned int) xhci->hci_version);
+ slot_ctx->dev_info2 |= XHCI_MAX_PORTS(hdev->maxchild);
+ /* Set TT think time - convert from ns to FS bit times.
+ * 0 = 8 FS bit times, 1 = 16 FS bit times,
+ * 2 = 24 FS bit times, 3 = 32 FS bit times.
+ */
+ think_time = tt->think_time;
+ if (think_time != 0)
+ think_time = (think_time / 666) - 1;
+ slot_ctx->tt_info |= TT_THINK_TIME(think_time);
+ } else {
+ xhci_dbg(xhci, "xHCI version %x doesn't need hub "
+ "TT think time or number of ports\n",
+ (unsigned int) xhci->hci_version);
+ }
+ slot_ctx->dev_state = 0;
+ spin_unlock_irqrestore(&xhci->lock, flags);
+
+ xhci_dbg(xhci, "Set up %s for hub device.\n",
+ (xhci->hci_version > 0x95) ?
+ "configure endpoint" : "evaluate context");
+ xhci_dbg(xhci, "Slot %u Input Context:\n", hdev->slot_id);
+ xhci_dbg_ctx(xhci, config_cmd->in_ctx, 0);
+
+ /* Issue and wait for the configure endpoint or
+ * evaluate context command.
+ */
+ if (xhci->hci_version > 0x95)
+ ret = xhci_configure_endpoint(xhci, hdev, config_cmd,
+ false, false);
+ else
+ ret = xhci_configure_endpoint(xhci, hdev, config_cmd,
+ true, false);
+
+ xhci_dbg(xhci, "Slot %u Output Context:\n", hdev->slot_id);
+ xhci_dbg_ctx(xhci, vdev->out_ctx, 0);
+
+ xhci_free_command(xhci, config_cmd);
+ return ret;
+}
+
int xhci_get_frame(struct usb_hcd *hcd)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
#define MAX_EXIT (0xffff)
/* Root hub port number that is needed to access the USB device */
#define ROOT_HUB_PORT(p) (((p) & 0xff) << 16)
+/* Maximum number of ports under a hub device */
+#define XHCI_MAX_PORTS(p) (((p) & 0xff) << 24)
/* tt_info bitmasks */
/*
* '0' if the device is not low or full speed.
*/
#define TT_PORT (0xff << 8)
+#define TT_THINK_TIME(p) (((p) & 0x3) << 16)
/* dev_state bitmasks */
/* USB device address - assigned by the HC */
int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev);
void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev);
int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev);
+int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
+ struct usb_tt *tt, gfp_t mem_flags);
int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);