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198 lines
4.5 KiB
C
198 lines
4.5 KiB
C
/** @file
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USB bus enumeration interface.
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Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _USB_ENUMERATION_H_
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#define _USB_ENUMERATION_H_
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//
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// Advance the byte and bit to the next bit, adjust byte accordingly.
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//
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#define USB_NEXT_BIT(Byte, Bit) \
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do { \
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(Bit)++; \
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if ((Bit) > 7) { \
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(Byte)++; \
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(Bit) = 0; \
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} \
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} while (0)
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//
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// Common interface used by usb bus enumeration process.
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// This interface is defined to mask the difference between
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// the root hub and normal hub. So, bus enumeration code
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// can be shared by both root hub and normal hub
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//
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typedef
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EFI_STATUS
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(*USB_HUB_INIT) (
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IN USB_INTERFACE *UsbIf
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);
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//
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// Get the port status. This function is required to
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// ACK the port change bits although it will return
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// the port changes in PortState. Bus enumeration code
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// doesn't need to ACK the port change bits.
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//
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typedef
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EFI_STATUS
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(*USB_HUB_GET_PORT_STATUS) (
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IN USB_INTERFACE *UsbIf,
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IN UINT8 Port,
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OUT EFI_USB_PORT_STATUS *PortState
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);
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typedef
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VOID
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(*USB_HUB_CLEAR_PORT_CHANGE) (
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IN USB_INTERFACE *HubIf,
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IN UINT8 Port
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);
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typedef
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EFI_STATUS
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(*USB_HUB_SET_PORT_FEATURE) (
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IN USB_INTERFACE *UsbIf,
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IN UINT8 Port,
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IN EFI_USB_PORT_FEATURE Feature
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);
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typedef
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EFI_STATUS
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(*USB_HUB_CLEAR_PORT_FEATURE) (
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IN USB_INTERFACE *UsbIf,
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IN UINT8 Port,
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IN EFI_USB_PORT_FEATURE Feature
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);
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typedef
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EFI_STATUS
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(*USB_HUB_RESET_PORT) (
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IN USB_INTERFACE *UsbIf,
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IN UINT8 Port
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);
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typedef
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EFI_STATUS
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(*USB_HUB_RELEASE) (
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IN USB_INTERFACE *UsbIf
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);
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/**
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Return the endpoint descriptor in this interface.
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@param UsbIf The interface to search in.
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@param EpAddr The address of the endpoint to return.
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@return The endpoint descriptor or NULL.
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**/
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USB_ENDPOINT_DESC*
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UsbGetEndpointDesc (
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IN USB_INTERFACE *UsbIf,
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IN UINT8 EpAddr
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);
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/**
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Select an alternate setting for the interface.
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Each interface can have several mutually exclusive
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settings. Only one setting is active. It will
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also reset its endpoints' toggle to zero.
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@param IfDesc The interface descriptor to set.
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@param Alternate The alternate setting number to locate.
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@retval EFI_NOT_FOUND There is no setting with this alternate index.
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@retval EFI_SUCCESS The interface is set to Alternate setting.
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**/
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EFI_STATUS
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UsbSelectSetting (
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IN USB_INTERFACE_DESC *IfDesc,
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IN UINT8 Alternate
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);
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/**
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Select a new configuration for the device. Each
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device may support several configurations.
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@param Device The device to select configuration.
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@param ConfigIndex The index of the configuration ( != 0).
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@retval EFI_NOT_FOUND There is no configuration with the index.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate resource.
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@retval EFI_SUCCESS The configuration is selected.
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**/
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EFI_STATUS
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UsbSelectConfig (
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IN USB_DEVICE *Device,
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IN UINT8 ConfigIndex
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);
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/**
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Remove the current device configuration.
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@param Device The USB device to remove configuration from.
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@return None.
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**/
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EFI_STATUS
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UsbRemoveConfig (
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IN USB_DEVICE *Device
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);
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/**
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Remove the device and all its children from the bus.
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@param Device The device to remove.
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@retval EFI_SUCCESS The device is removed.
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**/
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EFI_STATUS
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UsbRemoveDevice (
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IN USB_DEVICE *Device
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);
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/**
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Enumerate all the changed hub ports.
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@param Event The event that is triggered.
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@param Context The context to the event.
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@return None.
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**/
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VOID
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EFIAPI
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UsbHubEnumeration (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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/**
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Enumerate all the changed hub ports.
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@param Event The event that is triggered.
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@param Context The context to the event.
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@return None.
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**/
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VOID
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EFIAPI
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UsbRootHubEnumeration (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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#endif
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