From 83632987dc0ca79a4f1e63d7952ccdde62e989da Mon Sep 17 00:00:00 2001 From: rsun3 Date: Thu, 3 Sep 2009 02:37:02 +0000 Subject: [PATCH] Add into MdePkg definitions for the SMM Software Dispatch Protocol as defined in PI 1.2 Specification Volume 4 System Management Mode Core Interface. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9227 6f19259b-4bc3-4df7-8a09-765794883524 --- MdePkg/Include/Protocol/SmmSwDispatch2.h | 136 +++++++++++++++++++++++ MdePkg/MdePkg.dec | 3 + 2 files changed, 139 insertions(+) create mode 100644 MdePkg/Include/Protocol/SmmSwDispatch2.h diff --git a/MdePkg/Include/Protocol/SmmSwDispatch2.h b/MdePkg/Include/Protocol/SmmSwDispatch2.h new file mode 100644 index 0000000000..2732c3dd75 --- /dev/null +++ b/MdePkg/Include/Protocol/SmmSwDispatch2.h @@ -0,0 +1,136 @@ +/** @file + SMM Software Dispatch Protocol as defined in 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, 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. + +**/ + +#ifndef _SMM_SW_DISPATCH2_H_ +#define _SMM_SW_DISPATCH2_H_ + +#include + +#define EFI_SMM_SW_DISPATCH2_PROTOCOL_GUID \ + { \ + 0x18a3c6dc, 0x5eea, 0x48c8, {0xa1, 0xc1, 0xb5, 0x33, 0x89, 0xf9, 0x89, 0x99 } \ + } + +/// +/// 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] 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 valid range. + @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_REGISTER)( + IN CONST EFI_SMM_SW_DISPATCH2_PROTOCOL *This, + IN EFI_SMM_HANDLER_ENTRY_POINT2 DispatchFunction, + IN CONST 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_UNREGISTER)( + 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_REGISTER Register; + EFI_SMM_SW_UNREGISTER 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 diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec index 72baed191e..8f641bd3df 100644 --- a/MdePkg/MdePkg.dec +++ b/MdePkg/MdePkg.dec @@ -635,6 +635,9 @@ ## Include/Protocol/SmmPciRootBridgeIo.h gEfiSmmPciRootBridgeIoProtocolGuid = { 0x8bc1714d, 0xffcb, 0x41c3, { 0x89, 0xdc, 0x6c, 0x74, 0xd0, 0x6d, 0x98, 0xea }} + ## Include/Protocol/SmmSwDispatch2.h + gEfiSmmSwDispatch2ProtocolGuid = { 0x18a3c6dc, 0x5eea, 0x48c8, {0xa1, 0xc1, 0xb5, 0x33, 0x89, 0xf9, 0x89, 0x99 }} + # # Protocols defined in UEFI2.1/UEFI2.0/EFI1.1 # -- 2.39.2