mirror of https://github.com/acidanthera/audk.git
135 lines
5.5 KiB
C
135 lines
5.5 KiB
C
/** @file
|
|
SMM Software Dispatch Protocol introduced from PI 1.2 Specification
|
|
Volume 4 System Management Mode Core Interface.
|
|
|
|
This protocol provides the parent dispatch service for a given SMI source generator.
|
|
|
|
Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
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.
|
|
|
|
**/
|
|
|
|
#ifndef _SMM_SW_DISPATCH2_H_
|
|
#define _SMM_SW_DISPATCH2_H_
|
|
|
|
#include <Protocol/MmSwDispatch.h>
|
|
#include <Pi/PiSmmCis.h>
|
|
|
|
#define EFI_SMM_SW_DISPATCH2_PROTOCOL_GUID EFI_MM_SW_DISPATCH_PROTOCOL_GUID
|
|
|
|
///
|
|
/// 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_REGISTER_CONTEXT;
|
|
|
|
///
|
|
/// The DispatchFunction will be called with Context set to the same value as was passed into
|
|
/// this function in RegisterContext and with CommBuffer (and CommBufferSize) pointing
|
|
/// to an instance of EFI_SMM_SW_CONTEXT indicating the index of the CPU which generated the
|
|
/// software SMI.
|
|
///
|
|
typedef struct {
|
|
///
|
|
/// The 0-based index of the CPU which generated the software SMI.
|
|
///
|
|
UINTN SwSmiCpuIndex;
|
|
///
|
|
/// This value corresponds directly to the CommandPort parameter used in the call to Trigger().
|
|
///
|
|
UINT8 CommandPort;
|
|
///
|
|
/// This value corresponds directly to the DataPort parameter used in the call to Trigger().
|
|
///
|
|
UINT8 DataPort;
|
|
} EFI_SMM_SW_CONTEXT;
|
|
|
|
typedef struct _EFI_SMM_SW_DISPATCH2_PROTOCOL EFI_SMM_SW_DISPATCH2_PROTOCOL;
|
|
|
|
/**
|
|
Register a child SMI source dispatch function for the specified software SMI.
|
|
|
|
This service registers a function (DispatchFunction) which will be called when the software
|
|
SMI source specified by RegisterContext->SwSmiCpuIndex is detected. On return,
|
|
DispatchHandle contains a unique handle which may be used later to unregister the function
|
|
using UnRegister().
|
|
|
|
@param[in] This Pointer to the EFI_SMM_SW_DISPATCH2_PROTOCOL instance.
|
|
@param[in] DispatchFunction Function to register for handler when the specified software
|
|
SMI is generated.
|
|
@param[in, out] RegisterContext 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[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 SW driver was unable to enable the SMI source.
|
|
@retval EFI_INVALID_PARAMETER RegisterContext is invalid. The SW SMI input value
|
|
is not within a valid range or is already in use.
|
|
@retval EFI_OUT_OF_RESOURCES There is not enough memory (system or SMM) to manage this
|
|
child.
|
|
@retval EFI_OUT_OF_RESOURCES A unique software SMI value could not be assigned
|
|
for this dispatch.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_SMM_SW_REGISTER2)(
|
|
IN CONST EFI_SMM_SW_DISPATCH2_PROTOCOL *This,
|
|
IN EFI_SMM_HANDLER_ENTRY_POINT2 DispatchFunction,
|
|
IN OUT EFI_SMM_SW_REGISTER_CONTEXT *RegisterContext,
|
|
OUT EFI_HANDLE *DispatchHandle
|
|
);
|
|
|
|
/**
|
|
Unregister a child SMI source dispatch function for the specified software SMI.
|
|
|
|
This service removes the handler associated with DispatchHandle so that it will no longer be
|
|
called in response to a software SMI.
|
|
|
|
@param[in] This Pointer to the EFI_SMM_SW_DISPATCH2_PROTOCOL instance.
|
|
@param[in] DispatchHandle Handle of dispatch function to deregister.
|
|
|
|
@retval EFI_SUCCESS The dispatch function has been successfully unregistered.
|
|
@retval EFI_INVALID_PARAMETER The DispatchHandle was not valid.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_SMM_SW_UNREGISTER2)(
|
|
IN CONST EFI_SMM_SW_DISPATCH2_PROTOCOL *This,
|
|
IN EFI_HANDLE DispatchHandle
|
|
);
|
|
|
|
///
|
|
/// Interface structure for the SMM Software SMI Dispatch Protocol.
|
|
///
|
|
/// The EFI_SMM_SW_DISPATCH2_PROTOCOL provides the ability to install child handlers for the
|
|
/// given software. These handlers will respond to software interrupts, and the maximum software
|
|
/// interrupt in the EFI_SMM_SW_REGISTER_CONTEXT is denoted by MaximumSwiValue.
|
|
///
|
|
struct _EFI_SMM_SW_DISPATCH2_PROTOCOL {
|
|
EFI_SMM_SW_REGISTER2 Register;
|
|
EFI_SMM_SW_UNREGISTER2 UnRegister;
|
|
///
|
|
/// A read-only field that describes the maximum value that can be used in the
|
|
/// EFI_SMM_SW_DISPATCH2_PROTOCOL.Register() service.
|
|
///
|
|
UINTN MaximumSwiValue;
|
|
};
|
|
|
|
extern EFI_GUID gEfiSmmSwDispatch2ProtocolGuid;
|
|
|
|
#endif
|