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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmGpiDispatch.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmGpiDispatch.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmGpiDispatch.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmGpiDispatch.h new file mode 100644 index 0000000000..9a4307249b --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/MmGpiDispatch.h @@ -0,0 +1,125 @@ +/** @file + MM General Purpose Input (GPI) Dispatch Protocol as defined in PI 1.5 Specification + Volume 4 Management Mode Core Interface. + + This protocol provides the parent dispatch service for the General Purpose Input + (GPI) MMI source generator. + + The EFI_MM_GPI_DISPATCH_PROTOCOL provides the ability to install child handlers for the + given event types. Several inputs can be enabled. This purpose of this interface is to generate an + MMI in response to any of these inputs having a true value provided. + + 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. + + @par Revision Reference: + This protocol is from PI Version 1.5. + +**/ + +#ifndef _MM_GPI_DISPATCH_H_ +#define _MM_GPI_DISPATCH_H_ + +#include <Pi/PiMmCis.h> + +#define EFI_MM_GPI_DISPATCH_PROTOCOL_GUID \ + { \ + 0x25566b03, 0xb577, 0x4cbf, {0x95, 0x8c, 0xed, 0x66, 0x3e, 0xa2, 0x43, 0x80 } \ + } + +/// +/// The dispatch function's context. +/// +typedef struct { + /// + /// A number from one of 2^64 possible GPIs that can generate an MMI. A + /// 0 corresponds to logical GPI[0]; 1 corresponds to logical GPI[1]; and + /// GpiNum of N corresponds to GPI[N], where N can span from 0 to 2^64-1. + /// + UINT64 GpiNum; +} EFI_MM_GPI_REGISTER_CONTEXT; + +typedef struct _EFI_MM_GPI_DISPATCH_PROTOCOL EFI_MM_GPI_DISPATCH_PROTOCOL; + +/** + Registers a child MMI source dispatch function with a parent MM driver. + + This service registers a function (DispatchFunction) which will be called when an MMI is + generated because of one or more of the GPIs specified by RegisterContext. On return, + DispatchHandle contains a unique handle which may be used later to unregister the function + using UnRegister(). + The DispatchFunction will be called with Context set to the same value as was passed into + this function in RegisterContext and with CommBuffer pointing to another instance of + EFI_MM_GPI_REGISTER_CONTEXT describing the GPIs which actually caused the MMI and + CommBufferSize pointing to the size of the structure. + + @param[in] This Pointer to the EFI_MM_GPI_DISPATCH_PROTOCOL instance. + @param[in] DispatchFunction Function to register for handler when the specified GPI causes an MMI. + @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 the GPI(s) for which the dispatch function + should be invoked. + @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 driver was unable to enable the MMI source. + @retval EFI_INVALID_PARAMETER RegisterContext is invalid. The GPI input value + is not within valid range. + @retval EFI_OUT_OF_RESOURCES There is not enough memory (system or MM) to manage this child. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_GPI_REGISTER)( + IN CONST EFI_MM_GPI_DISPATCH_PROTOCOL *This, + IN EFI_MM_HANDLER_ENTRY_POINT DispatchFunction, + IN CONST EFI_MM_GPI_REGISTER_CONTEXT *RegisterContext, + OUT EFI_HANDLE *DispatchHandle + ); + +/** + Unregisters a General Purpose Input (GPI) service. + + This service removes the handler associated with DispatchHandle so that it will no longer be + called when the GPI triggers an MMI. + + @param[in] This Pointer to the EFI_MM_GPI_DISPATCH_PROTOCOL instance. + @param[in] DispatchHandle Handle of the service to remove. + + @retval EFI_SUCCESS Handle of the service to remove. + @retval EFI_INVALID_PARAMETER The DispatchHandle was not valid. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_GPI_UNREGISTER)( + IN CONST EFI_MM_GPI_DISPATCH_PROTOCOL *This, + IN EFI_HANDLE DispatchHandle + ); + +/// +/// Interface structure for the MM GPI MMI Dispatch Protocol +/// +/// The MM GPI MMI Dispatch Protocol provides the parent dispatch service +/// for the General Purpose Input (GPI) MMI source generator. +/// +struct _EFI_MM_GPI_DISPATCH_PROTOCOL { + EFI_MM_GPI_REGISTER Register; + EFI_MM_GPI_UNREGISTER UnRegister; + /// + /// Denotes the maximum value of inputs that can have handlers attached. + /// + UINTN NumSupportedGpis; +}; + +extern EFI_GUID gEfiMmGpiDispatchProtocolGuid; + +#endif + |