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/** @file
Provides the parent dispatch service for the power button SMI source generator.
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Revision Reference:
This Protocol is defined in Framework of EFI SMM Core Interface Spec
Version 0.9.
**/
#ifndef _EFI_SMM_POWER_BUTTON_DISPATCH_H_
#define _EFI_SMM_POWER_BUTTON_DISPATCH_H_
//
// Global ID for the Power Button SMI Protocol
//
#define EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL_GUID \
{ \
0xb709efa0, 0x47a6, 0x4b41, {0xb9, 0x31, 0x12, 0xec, 0xe7, 0xa8, 0xee, 0x56 } \
}
typedef struct _EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL;
//
// Related Definitions
//
//
// Power Button. Example, Use for changing LEDs before ACPI OS is on.
// - DXE/BDS Phase
// - OS Install Phase
//
typedef enum {
PowerButtonEntry,
PowerButtonExit
} EFI_POWER_BUTTON_PHASE;
typedef struct {
EFI_POWER_BUTTON_PHASE Phase;
} EFI_SMM_POWER_BUTTON_DISPATCH_CONTEXT;
//
// Member functions
//
/**
Dispatch function for a Power Button SMI handler.
@param[in] DispatchHandle The handle of this dispatch function.
@param[in] DispatchContext The pointer to the dispatch function's context.
The DispatchContext fields are filled in
by the dispatching driver prior to
invoking this dispatch function.
**/
typedef
VOID
(EFIAPI *EFI_SMM_POWER_BUTTON_DISPATCH)(
IN EFI_HANDLE DispatchHandle,
IN EFI_SMM_POWER_BUTTON_DISPATCH_CONTEXT *DispatchContext
);
/**
Provides the parent dispatch service for a given SMI source generator
@param[in] This The pointer to the
EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL instance.
@param[in] DispatchFunction The function to install.
@param[in] DispatchContext The pointer to the dispatch function's context.
Indicates to the register
function the Power Button SMI phase for which
to invoke the dispatch function.
@param[out] DispatchHandle Handle generated by the dispatcher to track
the function instance.
@retval EFI_SUCCESS The dispatch function has been successfully
registered and the SMI source has been enabled.
@retval EFI_DEVICE_ERROR The 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 Power Button SMI
phase is not within valid range.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_SMM_POWER_BUTTON_REGISTER)(
IN EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL *This,
IN EFI_SMM_POWER_BUTTON_DISPATCH DispatchFunction,
IN EFI_SMM_POWER_BUTTON_DISPATCH_CONTEXT *DispatchContext,
OUT EFI_HANDLE *DispatchHandle
);
/**
Unregisters a power-button service.
@param[in] This The pointer to the EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL instance.
@param[in] DispatchHandle The handle of the service to remove.
@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 The handle is invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_SMM_POWER_BUTTON_UNREGISTER)(
IN EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL *This,
IN EFI_HANDLE DispatchHandle
);
/**
@par Protocol Description:
Provides the parent dispatch service for the SMM power button SMI source generator.
**/
struct _EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL {
///
/// Installs a child service to be dispatched by this protocol.
///
EFI_SMM_POWER_BUTTON_REGISTER Register;
///
/// Removes a child service dispatched by this protocol.
///
EFI_SMM_POWER_BUTTON_UNREGISTER UnRegister;
};
extern EFI_GUID gEfiSmmPowerButtonDispatchProtocolGuid;
#endif
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