diff options
Diffstat (limited to 'drivers/usb/core/hcd.h')
| -rw-r--r-- | drivers/usb/core/hcd.h | 55 |
1 files changed, 47 insertions, 8 deletions
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index e7d4479de41c..d397ecfd5b17 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -173,6 +173,8 @@ struct hc_driver { #define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */ #define HCD_USB11 0x0010 /* USB 1.1 */ #define HCD_USB2 0x0020 /* USB 2.0 */ +#define HCD_USB3 0x0040 /* USB 3.0 */ +#define HCD_MASK 0x0070 /* called to init HCD and root hub */ int (*reset) (struct usb_hcd *hcd); @@ -182,10 +184,10 @@ struct hc_driver { * a whole, not just the root hub; they're for PCI bus glue. */ /* called after suspending the hub, before entering D3 etc */ - int (*pci_suspend) (struct usb_hcd *hcd, pm_message_t message); + int (*pci_suspend)(struct usb_hcd *hcd); /* called after entering D0 (etc), before resuming the hub */ - int (*pci_resume) (struct usb_hcd *hcd); + int (*pci_resume)(struct usb_hcd *hcd, bool hibernated); /* cleanly make HCD stop writing memory and doing I/O */ void (*stop) (struct usb_hcd *hcd); @@ -224,6 +226,43 @@ struct hc_driver { void (*relinquish_port)(struct usb_hcd *, int); /* has a port been handed over to a companion? */ int (*port_handed_over)(struct usb_hcd *, int); + + /* xHCI specific functions */ + /* Called by usb_alloc_dev to alloc HC device structures */ + int (*alloc_dev)(struct usb_hcd *, struct usb_device *); + /* Called by usb_release_dev to free HC device structures */ + void (*free_dev)(struct usb_hcd *, struct usb_device *); + + /* Bandwidth computation functions */ + /* Note that add_endpoint() can only be called once per endpoint before + * check_bandwidth() or reset_bandwidth() must be called. + * drop_endpoint() can only be called once per endpoint also. + * A call to xhci_drop_endpoint() followed by a call to xhci_add_endpoint() will + * add the endpoint to the schedule with possibly new parameters denoted by a + * different endpoint descriptor in usb_host_endpoint. + * A call to xhci_add_endpoint() followed by a call to xhci_drop_endpoint() is + * not allowed. + */ + /* Allocate endpoint resources and add them to a new schedule */ + int (*add_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); + /* Drop an endpoint from a new schedule */ + int (*drop_endpoint)(struct usb_hcd *, struct usb_device *, struct usb_host_endpoint *); + /* Check that a new hardware configuration, set using + * endpoint_enable and endpoint_disable, does not exceed bus + * bandwidth. This must be called before any set configuration + * or set interface requests are sent to the device. + */ + int (*check_bandwidth)(struct usb_hcd *, struct usb_device *); + /* Reset the device schedule to the last known good schedule, + * which was set from a previous successful call to + * check_bandwidth(). This reverts any add_endpoint() and + * drop_endpoint() calls since that last successful call. + * Used for when a check_bandwidth() call fails due to resource + * or bandwidth constraints. + */ + void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *); + /* Returns the hardware-chosen device address */ + int (*address_device)(struct usb_hcd *, struct usb_device *udev); }; extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb); @@ -242,6 +281,9 @@ extern void usb_hcd_disable_endpoint(struct usb_device *udev, extern void usb_hcd_reset_endpoint(struct usb_device *udev, struct usb_host_endpoint *ep); extern void usb_hcd_synchronize_unlinks(struct usb_device *udev); +extern int usb_hcd_check_bandwidth(struct usb_device *udev, + struct usb_host_config *new_config, + struct usb_interface *new_intf); extern int usb_hcd_get_frame_number(struct usb_device *udev); extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, @@ -261,14 +303,11 @@ struct pci_device_id; extern int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id); extern void usb_hcd_pci_remove(struct pci_dev *dev); - -#ifdef CONFIG_PM -extern int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t msg); -extern int usb_hcd_pci_resume(struct pci_dev *dev); -#endif /* CONFIG_PM */ - extern void usb_hcd_pci_shutdown(struct pci_dev *dev); +#ifdef CONFIG_PM_SLEEP +extern struct dev_pm_ops usb_hcd_pci_pm_ops; +#endif #endif /* CONFIG_PCI */ /* pci-ish (pdev null is ok) buffer alloc/mapping support */ |