mirror of https://github.com/acidanthera/audk.git
167 lines
6.6 KiB
C
167 lines
6.6 KiB
C
/** @file
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UEFI DriverBinding Protocol is defined in UEFI specification.
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This protocol is produced by every driver that follows the UEFI Driver Model,
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and it is the central component that allows drivers and controllers to be managed.
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Copyright (c) 2006 - 2008, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __EFI_DRIVER_BINDING_H__
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#define __EFI_DRIVER_BINDING_H__
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#include <PiDxe.h>
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#include <Protocol/DevicePath.h>
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///
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/// Global ID for the ControllerHandle Driver Protocol
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///
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#define EFI_DRIVER_BINDING_PROTOCOL_GUID \
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{ \
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0x18a031ab, 0xb443, 0x4d1a, {0xa5, 0xc0, 0xc, 0x9, 0x26, 0x1e, 0x9f, 0x71 } \
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}
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typedef struct _EFI_DRIVER_BINDING_PROTOCOL EFI_DRIVER_BINDING_PROTOCOL;
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/**
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Test to see if this driver supports ControllerHandle.
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@param This Protocol instance pointer.
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@param ControllerHandle Handle of device to test
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@param RemainingDevicePath Optional parameter use to pick a specific child
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device to start.
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@retval EFI_SUCCESS This driver supports this device
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@retval EFI_ALREADY_STARTED This driver is already running on this device
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@retval other This driver does not support this device
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DRIVER_BINDING_SUPPORTED)(
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
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);
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/**
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Start this driver on ControllerHandle.
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@param This Protocol instance pointer.
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@param ControllerHandle Handle of device to bind driver to
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@param RemainingDevicePath Optional parameter use to pick a specific child
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device to start.
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@retval EFI_SUCCESS This driver is added to ControllerHandle
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@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle
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@retval other This driver does not support this device
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DRIVER_BINDING_START)(
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
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);
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/**
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Stop this driver on ControllerHandle.
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@param This Protocol instance pointer.
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@param ControllerHandle Handle of device to stop driver on
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@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
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children is zero stop the entire bus driver.
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@param ChildHandleBuffer List of Child Handles to Stop.
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@retval EFI_SUCCESS This driver is removed ControllerHandle
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@retval other This driver was not removed from this device
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DRIVER_BINDING_STOP)(
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
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);
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//
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// Interface structure for the ControllerHandle Driver Protocol
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//
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/**
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@par Protocol Description:
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This protocol provides the services required to determine if a driver supports a given controller.
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If a controller is supported, then it also provides routines to start and stop the controller.
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@param Supported
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Tests to see if this driver supports a given controller. This service
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is called by the EFI boot service ConnectController(). In
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order to make drivers as small as possible, there are a few calling
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restrictions for this service. ConnectController() must
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follow these calling restrictions. If any other agent wishes to call
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Supported() it must also follow these calling restrictions.
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@param Start
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Starts a controller using this driver. This service is called by the
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EFI boot service ConnectController(). In order to make
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drivers as small as possible, there are a few calling restrictions for
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this service. ConnectController() must follow these
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calling restrictions. If any other agent wishes to call Start() it
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must also follow these calling restrictions.
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@param Stop
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Stops a controller using this driver. This service is called by the
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EFI boot service DisconnectController(). In order to
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make drivers as small as possible, there are a few calling
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restrictions for this service. DisconnectController()
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must follow these calling restrictions. If any other agent wishes
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to call Stop() it must also follow these calling restrictions.
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@param Version
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The version number of the UEFI driver that produced the
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EFI_DRIVER_BINDING_PROTOCOL. This field is used by
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the EFI boot service ConnectController() to determine
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the order that driver's Supported() service will be used when
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a controller needs to be started. EFI Driver Binding Protocol
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instances with higher Version values will be used before ones
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with lower Version values. The Version values of 0x0-
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0x0f and 0xfffffff0-0xffffffff are reserved for
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platform/OEM specific drivers. The Version values of 0x10-
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0xffffffef are reserved for IHV-developed drivers.
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@param ImageHandle
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The image handle of the UEFI driver that produced this instance
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of the EFI_DRIVER_BINDING_PROTOCOL.
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@param DriverBindingHandle
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The handle on which this instance of the
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EFI_DRIVER_BINDING_PROTOCOL is installed. In most
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cases, this is the same handle as ImageHandle. However, for
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UEFI drivers that produce more than one instance of the
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EFI_DRIVER_BINDING_PROTOCOL, this value may not be
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the same as ImageHandle.
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**/
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struct _EFI_DRIVER_BINDING_PROTOCOL {
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EFI_DRIVER_BINDING_SUPPORTED Supported;
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EFI_DRIVER_BINDING_START Start;
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EFI_DRIVER_BINDING_STOP Stop;
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UINT32 Version;
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EFI_HANDLE ImageHandle;
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EFI_HANDLE DriverBindingHandle;
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};
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extern EFI_GUID gEfiDriverBindingProtocolGuid;
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#endif
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