mirror of https://github.com/acidanthera/audk.git
151 lines
5.4 KiB
C
151 lines
5.4 KiB
C
/** @file
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This file declares Smm Gpi Smi Child Protocol
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Copyright (c) 2006, 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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Module Name: SmmGpiDispatch.h
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@par Revision Reference:
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This Protocol is defined in Framework of EFI SMM Core Interface Spec
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Version 0.9.
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**/
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#ifndef _EFI_SMM_GPI_DISPATCH_H_
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#define _EFI_SMM_GPI_DISPATCH_H_
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//
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// Global ID for the GPI SMI Protocol
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//
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#define EFI_SMM_GPI_DISPATCH_PROTOCOL_GUID \
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{ \
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0xe0744b81, 0x9513, 0x49cd, {0x8c, 0xea, 0xe9, 0x24, 0x5e, 0x70, 0x39, 0xda } \
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}
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typedef struct _EFI_SMM_GPI_DISPATCH_PROTOCOL EFI_SMM_GPI_DISPATCH_PROTOCOL;
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//
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// Related Definitions
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//
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//
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// GpiMask is a bit mask of 32 possible general purpose inputs that can generate a
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// a SMI. Bit 0 corresponds to logical GPI[0], 1 corresponds to logical GPI[1], etc.
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//
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// The logical GPI index to physical pin on device is described by the GPI device name
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// found on the same handle as the GpiSmi child dispatch protocol. The GPI device name
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// is defined as protocol with a GUID name and NULL protocol pointer.
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//
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typedef struct {
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UINTN GpiNum;
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} EFI_SMM_GPI_DISPATCH_CONTEXT;
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//
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// Member functions
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//
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/**
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Dispatch function for a GPI SMI handler.
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@param DispatchHandle Handle of this dispatch function.
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@param DispatchContext Pointer to the dispatch function's context.
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The DispatchContext fields are filled in by the dispatching driver prior to
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invoking this dispatch function.
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@return None
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**/
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typedef
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VOID
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(EFIAPI *EFI_SMM_GPI_DISPATCH) (
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IN EFI_HANDLE DispatchHandle,
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IN EFI_SMM_GPI_DISPATCH_CONTEXT *DispatchContext
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);
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/**
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Register a child SMI source dispatch function with a parent SMM driver
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@param This Protocol instance pointer.
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@param DispatchFunction Pointer to dispatch function to be invoked for
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this SMI source
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@param DispatchContext Pointer to the dispatch function's context.
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The caller fills this context in before calling
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the register function to indicate to the register
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function the GPI(s) for which the dispatch function
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should be invoked.
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@param DispatchHandle Handle of dispatch function, for when interfacing
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with the parent Sx state SMM driver.
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@retval EFI_SUCCESS The dispatch function has been successfully
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registered and the SMI source has been enabled.
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@retval EFI_DEVICE_ERROR The driver was unable to enable the SMI source.
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@retval EFI_OUT_OF_RESOURCES Not enough memory (system or SMM) to manage this
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child.
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@retval EFI_INVALID_PARAMETER DispatchContext is invalid. The GPI input value
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is not within valid range.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_GPI_REGISTER) (
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IN EFI_SMM_GPI_DISPATCH_PROTOCOL *This,
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IN EFI_SMM_GPI_DISPATCH DispatchFunction,
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IN EFI_SMM_GPI_DISPATCH_CONTEXT *DispatchContext,
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OUT EFI_HANDLE *DispatchHandle
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);
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/**
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Unregister a child SMI source dispatch function with a parent SMM driver
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@param This Protocol instance pointer.
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@param DispatchHandle Handle of dispatch function to deregister.
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@retval EFI_SUCCESS The dispatch function has been successfully
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unregistered and the SMI source has been disabled
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if there are no other registered child dispatch
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functions for this SMI source.
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@retval EFI_INVALID_PARAMETER Handle is invalid.
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@retval other TBD
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_GPI_UNREGISTER) (
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IN EFI_SMM_GPI_DISPATCH_PROTOCOL *This,
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IN EFI_HANDLE DispatchHandle
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);
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//
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// Interface structure for the SMM GPI SMI Dispatch Protocol
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//
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/**
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@par Protocol Description:
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Provides the parent dispatch service for the General Purpose Input
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(GPI) SMI source generator.
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@param Register
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Installs a child service to be dispatched by this protocol.
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@param UnRegister
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Removes a child service dispatched by this protocol.
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@param NumSupportedGpis
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Denotes the maximum value of inputs that can have handlers attached.
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**/
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struct _EFI_SMM_GPI_DISPATCH_PROTOCOL {
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EFI_SMM_GPI_REGISTER Register;
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EFI_SMM_GPI_UNREGISTER UnRegister;
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UINTN NumSupportedGpis;
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};
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extern EFI_GUID gEfiSmmGpiDispatchProtocolGuid;
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#endif
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