diff options
| -rw-r--r-- | drivers/usb/host/xhci-hcd.c | 82 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-pci.c | 2 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 3 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 5 |
4 files changed, 92 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c index 2fcc360..99911e7 100644 --- a/drivers/usb/host/xhci-hcd.c +++ b/drivers/usb/host/xhci-hcd.c @@ -1594,6 +1594,88 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) 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); diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 8fb308d..b7712f2 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -63,6 +63,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd) xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1); xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2); xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3); + xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hc_capbase); + xhci->hci_version = HC_VERSION(xhci->hcc_params); xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params); xhci_print_registers(xhci); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 2274604..173c39c 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -789,6 +789,9 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, } break; case TRB_TYPE(TRB_EVAL_CONTEXT): + virt_dev = xhci->devs[slot_id]; + if (handle_cmd_in_cmd_wait_list(xhci, virt_dev, event)) + break; xhci->devs[slot_id]->cmd_status = GET_COMP_CODE(event->status); complete(&xhci->devs[slot_id]->cmd_completion); break; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 36f7d4f..4b254b6 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -509,6 +509,8 @@ struct xhci_slot_ctx { #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 */ /* @@ -522,6 +524,7 @@ struct xhci_slot_ctx { * '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 */ @@ -1231,6 +1234,8 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd); 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); |