diff options
Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmmSwDispatch2.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmmSwDispatch2.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmmSwDispatch2.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmmSwDispatch2.h new file mode 100644 index 0000000000..6018ac73da --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/SmmSwDispatch2.h @@ -0,0 +1,134 @@ +/** @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 - 2017, 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 |