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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmSwDispatch.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmSwDispatch.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmSwDispatch.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmSwDispatch.h new file mode 100644 index 0000000000..9ecb9a8297 --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmSwDispatch.h @@ -0,0 +1,136 @@ +/** @file + MM Software Dispatch Protocol introduced from PI 1.5 Specification + Volume 4 Management Mode Core Interface. + + This protocol provides the parent dispatch service for a given MMI source generator. + + Copyright (c) 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 _MM_SW_DISPATCH2_H_ +#define _MM_SW_DISPATCH2_H_ + +#include <Pi/PiMmCis.h> + +#define EFI_MM_SW_DISPATCH_PROTOCOL_GUID \ + { \ + 0x18a3c6dc, 0x5eea, 0x48c8, {0xa1, 0xc1, 0xb5, 0x33, 0x89, 0xf9, 0x89, 0x99 } \ + } + +/// +/// A particular chipset may not support all possible software MMI input values. +/// For example, the ICH supports only values 00h to 0FFh. The parent only allows a single +/// child registration for each SwMmiInputValue. +/// +typedef struct { + UINTN SwMmiInputValue; +} EFI_MM_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_MM_SW_CONTEXT indicating the index of the CPU which generated the +/// software MMI. +/// +typedef struct { + /// + /// The 0-based index of the CPU which generated the software MMI. + /// + UINTN SwMmiCpuIndex; + /// + /// 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_MM_SW_CONTEXT; + +typedef struct _EFI_MM_SW_DISPATCH_PROTOCOL EFI_MM_SW_DISPATCH_PROTOCOL; + +/** + Register a child MMI source dispatch function for the specified software MMI. + + This service registers a function (DispatchFunction) which will be called when the software + MMI source specified by RegisterContext->SwMmiCpuIndex 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_MM_SW_DISPATCH_PROTOCOL instance. + @param[in] DispatchFunction Function to register for handler when the specified software + MMI 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 MMI 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 MMI source has been enabled. + @retval EFI_DEVICE_ERROR The SW driver was unable to enable the MMI source. + @retval EFI_INVALID_PARAMETER RegisterContext is invalid. The SW MMI 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 MM) to manage this + child. + @retval EFI_OUT_OF_RESOURCES A unique software MMI value could not be assigned + for this dispatch. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_SW_REGISTER)( + IN CONST EFI_MM_SW_DISPATCH_PROTOCOL *This, + IN EFI_MM_HANDLER_ENTRY_POINT DispatchFunction, + IN OUT EFI_MM_SW_REGISTER_CONTEXT *RegisterContext, + OUT EFI_HANDLE *DispatchHandle + ); + +/** + Unregister a child MMI source dispatch function for the specified software MMI. + + This service removes the handler associated with DispatchHandle so that it will no longer be + called in response to a software MMI. + + @param[in] This Pointer to the EFI_MM_SW_DISPATCH_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_MM_SW_UNREGISTER)( + IN CONST EFI_MM_SW_DISPATCH_PROTOCOL *This, + IN EFI_HANDLE DispatchHandle +); + +/// +/// Interface structure for the MM Software MMI Dispatch Protocol. +/// +/// The EFI_MM_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_MM_SW_REGISTER_CONTEXT is denoted by MaximumSwiValue. +/// +struct _EFI_MM_SW_DISPATCH_PROTOCOL { + EFI_MM_SW_REGISTER Register; + EFI_MM_SW_UNREGISTER UnRegister; + /// + /// A read-only field that describes the maximum value that can be used in the + /// EFI_MM_SW_DISPATCH_PROTOCOL.Register() service. + /// + UINTN MaximumSwiValue; +}; + +extern EFI_GUID gEfiMmSwDispatchProtocolGuid; + +#endif |