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/** @file
This file declares EFI Smm Sx 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: SmmSxDispatch.h
@par Revision Reference:
This Protocol is defined in Framework of EFI SMM Core Interface Spec
Version 0.9.
**/
#ifndef _EFI_SMM_SX_DISPATCH_H_
#define _EFI_SMM_SX_DISPATCH_H_
//
// Global ID for the Sx SMI Protocol
//
#define EFI_SMM_SX_DISPATCH_PROTOCOL_GUID \
{ \
0x14fc52be, 0x1dc, 0x426c, {0x91, 0xae, 0xa2, 0x3c, 0x3e, 0x22, 0xa, 0xe8 } \
}
typedef struct _EFI_SMM_SX_DISPATCH_PROTOCOL EFI_SMM_SX_DISPATCH_PROTOCOL;
//
// Related Definitions
//
typedef enum {
SxS0,
SxS1,
SxS2,
SxS3,
SxS4,
SxS5,
EfiMaximumSleepType
} EFI_SLEEP_TYPE;
typedef enum {
SxEntry,
SxExit,
EfiMaximumPhase
} EFI_SLEEP_PHASE;
typedef struct {
EFI_SLEEP_TYPE Type;
EFI_SLEEP_PHASE Phase;
} EFI_SMM_SX_DISPATCH_CONTEXT;
//
// Member functions
//
/**
Dispatch function for a Sx state SMI handler.
@param DispatchHandle Handle of this dispatch function.
@param DispatchContext Pointer to the dispatch function¡¯s context.
The Type and Phase fields are filled in by the Sx dispatch driver
prior to invoking this dispatch function. For this interface,
the Sx driver will call the dispatch function for all Sx type
and phases, so the Sx state handler(s) must check the Type and
Phase field of EFI_SMM_SX_DISPATCH_CONTEXT and act accordingly.
Nothing
**/
typedef
VOID
(EFIAPI *EFI_SMM_SX_DISPATCH) (
IN EFI_HANDLE DispatchHandle,
IN EFI_SMM_SX_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 Sx state type and phase the caller
wishes to be called back on. For this intertace,
the Sx driver will call the registered handlers for
all Sx type and phases, so the Sx state handler(s)
must check the Type and Phase field of the Dispatch
context and act accordingly.
@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_UNSUPPORTED The Sx driver or hardware does not support that
Sx Type/Phase.
@retval EFI_DEVICE_ERROR The Sx 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. Type & Phase are not
within valid range.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_SMM_SX_REGISTER) (
IN EFI_SMM_SX_DISPATCH_PROTOCOL *This,
IN EFI_SMM_SX_DISPATCH DispatchFunction,
IN EFI_SMM_SX_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_SX_UNREGISTER) (
IN EFI_SMM_SX_DISPATCH_PROTOCOL *This,
IN EFI_HANDLE DispatchHandle
);
//
// Interface structure for the SMM Child Dispatch Protocol
//
/**
@par Protocol Description:
Provides the parent dispatch service for a given Sx-state source generator.
@param Register
Installs a child service to be dispatched by this protocol.
@param UnRegister
Removes a child service dispatched by this protocol.
**/
struct _EFI_SMM_SX_DISPATCH_PROTOCOL {
EFI_SMM_SX_REGISTER Register;
EFI_SMM_SX_UNREGISTER UnRegister;
};
extern EFI_GUID gEfiSmmSxDispatchProtocolGuid;
#endif
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