mirror of https://github.com/acidanthera/audk.git
94 lines
3.9 KiB
C
94 lines
3.9 KiB
C
/** @file
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The file defines the generic Service Binding Protocol functions.
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It provides services that are required to create and destroy child
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handles that support a given set of protocols.
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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_SERVICE_BINDING_H__
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#define __EFI_SERVICE_BINDING_H__
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///
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/// Forward reference for pure ANSI compatability
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///
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typedef struct _EFI_SERVICE_BINDING_PROTOCOL EFI_SERVICE_BINDING_PROTOCOL;
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/**
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Creates a child handle with a set of I/O services.
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@param This Protocol instance pointer.
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@param ChildHandle Pointer to the handle of the child to create. If it is NULL,
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then a new handle is created. If it is not NULL, then the
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I/O services are added to the existing child handle.
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@retval EFI_SUCCES The child handle was created with the I/O services
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@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create
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the child
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@retval other The child handle was not created
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SERVICE_BINDING_CREATE_CHILD)(
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IN EFI_SERVICE_BINDING_PROTOCOL *This,
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IN OUT EFI_HANDLE *ChildHandle
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);
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/**
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Destroys a child handle with a set of I/O services.
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@param This Protocol instance pointer.
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@param ChildHandle Handle of the child to destroy
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@retval EFI_SUCCES The I/O services were removed from the child handle
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@retval EFI_UNSUPPORTED The child handle does not support the I/O services
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that are being removed.
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@retval EFI_INVALID_PARAMETER Child handle is not a valid EFI Handle.
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@retval EFI_ACCESS_DENIED The child handle could not be destroyed because its
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I/O services are being used.
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@retval other The child handle was not destroyed
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SERVICE_BINDING_DESTROY_CHILD)(
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IN EFI_SERVICE_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ChildHandle
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);
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/**
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@par Protocol Description:
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The EFI_SERVICE_BINDING_PROTOCOL provides member functions to create and destroy
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child handles. A driver is responsible for adding protocols to the child handle
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in CreateChild() and removing protocols in DestroyChild(). It is also required
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that the CreateChild() function opens the parent protocol BY_CHILD_CONTROLLER
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to establish the parent-child relationship, and closes the protocol in DestroyChild().
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The pseudo code for CreateChild() and DestroyChild() is provided to specify the
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required behavior, not to specify the required implementation. Each consumer of
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a software protocol is responsible for calling CreateChild() when it requires the
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protocol and calling DestroyChild() when it is finished with that protocol.
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@param CreateChild
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Creates a child handle and installs a protocol.
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@param DestroyChild
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Destroys a child handle with a protocol installed on it.
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**/
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struct _EFI_SERVICE_BINDING_PROTOCOL {
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EFI_SERVICE_BINDING_CREATE_CHILD CreateChild;
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EFI_SERVICE_BINDING_DESTROY_CHILD DestroyChild;
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};
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#endif
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