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-/** @file
- This file declares EFI Smm Software Smi Child Protocol
-
- Copyright (c) 2006, Intel Corporation
- All rights reserved. This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
- Module Name: SmmSwDispatch.h
-
- @par Revision Reference:
- This Protocol is defined in Framework of EFI SMM Core Interface Spec
- Version 0.9.
-
-**/
-
-#ifndef _EFI_SMM_SW_DISPATCH_H_
-#define _EFI_SMM_SW_DISPATCH_H_
-
-//
-// Global ID for the SW SMI Protocol
-//
-#define EFI_SMM_SW_DISPATCH_PROTOCOL_GUID \
- { \
- 0xe541b773, 0xdd11, 0x420c, {0xb0, 0x26, 0xdf, 0x99, 0x36, 0x53, 0xf8, 0xbf } \
- }
-
-typedef struct _EFI_SMM_SW_DISPATCH_PROTOCOL EFI_SMM_SW_DISPATCH_PROTOCOL;
-
-//
-// Related Definitions
-//
-//
-// A particular chipset may not support all possible software SMI input values.
-// For example, the ICH supports only values 00h to 0FFh. The parent only allows a single
-// child registration for each SwSmiInputValue.
-//
-typedef struct {
- UINTN SwSmiInputValue;
-} EFI_SMM_SW_DISPATCH_CONTEXT;
-
-//
-// Member functions
-//
-/**
- Dispatch function for a Software SMI handler.
-
- @param DispatchHandle Handle of this dispatch function.
- @param DispatchContext Pointer to the dispatch function's context.
- The SwSmiInputValue field is filled in
- by the software dispatch driver prior to
- invoking this dispatch function.
- The dispatch function will only be called
- for input values for which it is registered.
-
- Nothing
-
-**/
-typedef
-VOID
-(EFIAPI *EFI_SMM_SW_DISPATCH) (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext
- );
-
-/**
- Register a child SMI source dispatch function with a parent SMM driver
-
- @param This Protocol instance pointer.
- @param DispatchFunction Pointer to dispatch function to be invoked for
- this SMI source
- @param DispatchContext Pointer to the dispatch function's context.
- The caller fills this context in before calling
- the register function to indicate to the register
- function which Software SMI input value the
- dispatch function should be invoked for.
- @param DispatchHandle Handle of dispatch function, for when interfacing
- with the parent Sx state SMM driver.
-
- @retval EFI_SUCCESS The dispatch function has been successfully
- registered and the SMI source has been enabled.
- @retval EFI_DEVICE_ERROR The SW driver was unable to enable the SMI source.
- @retval EFI_OUT_OF_RESOURCES Not enough memory (system or SMM) to manage this
- child.
- @retval EFI_INVALID_PARAMETER DispatchContext is invalid. The SW SMI input value
- is not within valid range.
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_SMM_SW_REGISTER) (
- IN EFI_SMM_SW_DISPATCH_PROTOCOL *This,
- IN EFI_SMM_SW_DISPATCH DispatchFunction,
- IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext,
- OUT EFI_HANDLE *DispatchHandle
- );
-
-/**
- Unregister a child SMI source dispatch function with a parent SMM driver
-
- @param This Protocol instance pointer.
- @param DispatchHandle Handle of dispatch function to deregister.
-
- @retval EFI_SUCCESS The dispatch function has been successfully
- unregistered and the SMI source has been disabled
- if there are no other registered child dispatch
- functions for this SMI source.
- @retval EFI_INVALID_PARAMETER Handle is invalid.
- @retval other TBD
-
-**/
-typedef
-EFI_STATUS
-(EFIAPI *EFI_SMM_SW_UNREGISTER) (
- IN EFI_SMM_SW_DISPATCH_PROTOCOL *This,
- IN EFI_HANDLE DispatchHandle
- );
-
-//
-// Interface structure for the SMM Software SMI Dispatch Protocol
-//
-/**
- @par Protocol Description:
- Provides the parent dispatch service for a given SMI source generator.
-
- @param Register
- Installs a child service to be dispatched by this protocol.
-
- @param UnRegister
- Removes a child service dispatched by this protocol.
-
- @param MaximumSwiValue
- A read-only field that describes the maximum value that can be used
- in the EFI_SMM_SW_DISPATCH_PROTOCOL.Register() service.
-
-**/
-struct _EFI_SMM_SW_DISPATCH_PROTOCOL {
- EFI_SMM_SW_REGISTER Register;
- EFI_SMM_SW_UNREGISTER UnRegister;
- UINTN MaximumSwiValue;
-};
-
-extern EFI_GUID gEfiSmmSwDispatchProtocolGuid;
-
-#endif