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Diffstat (limited to 'UefiCpuPkg/Include/Protocol')
| -rw-r--r-- | UefiCpuPkg/Include/Protocol/SmmCpuService.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/UefiCpuPkg/Include/Protocol/SmmCpuService.h b/UefiCpuPkg/Include/Protocol/SmmCpuService.h new file mode 100644 index 0000000000..9aced54f4d --- /dev/null +++ b/UefiCpuPkg/Include/Protocol/SmmCpuService.h @@ -0,0 +1,209 @@ +/** @file
+SMM CPU Service protocol definition.
+
+Copyright (c) 2013 - 2015, 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_CPU_SERVICE_PROTOCOL_H_
+#define _SMM_CPU_SERVICE_PROTOCOL_H_
+
+//
+// Share some definitions with MP Services and CPU Arch Protocol
+//
+#include <Protocol/MpService.h>
+#include <Protocol/Cpu.h>
+
+#define EFI_SMM_CPU_SERVICE_PROTOCOL_GUID \
+ { \
+ 0x1d202cab, 0xc8ab, 0x4d5c, { 0x94, 0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 } \
+ }
+
+typedef struct _EFI_SMM_CPU_SERVICE_PROTOCOL EFI_SMM_CPU_SERVICE_PROTOCOL;
+
+//
+// Protocol functions
+//
+
+/**
+ Gets processor information on the requested processor at the
+ instant this call is made. This service may only be called from the BSP.
+
+ @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL
+ instance.
+ @param[in] ProcessorNumber The handle number of processor.
+ @param[out] ProcessorInfoBuffer A pointer to the buffer where information for
+ the requested processor is deposited.
+
+ @retval EFI_SUCCESS Processor information was returned.
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.
+ @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
+ @retval EFI_NOT_FOUND The processor with the handle specified by
+ ProcessorNumber does not exist in the platform.
+**/
+typedef
+EFI_STATUS
+(EFIAPI * EFI_SMM_GET_PROCESSOR_INFO) (
+ IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
+ IN UINTN ProcessorNumber,
+ OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
+ );
+
+/**
+ This service switches the requested AP to be the BSP from that point onward.
+ This service changes the BSP for all purposes. This call can only be performed
+ by the current BSP.
+
+ This service switches the requested AP to be the BSP from that point onward.
+ This service changes the BSP for all purposes. The new BSP can take over the
+ execution of the old BSP and continue seamlessly from where the old one left
+ off.
+
+ If the BSP cannot be switched prior to the return from this service, then
+ EFI_UNSUPPORTED must be returned.
+
+ @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
+ @param[in] ProcessorNumber The handle number of AP that is to become the new
+ BSP. The range is from 0 to the total number of
+ logical processors minus 1.
+
+ @retval EFI_SUCCESS BSP successfully switched.
+ @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to
+ this service returning.
+ @retval EFI_UNSUPPORTED Switching the BSP is not supported.
+ @retval EFI_SUCCESS The calling processor is an AP.
+ @retval EFI_NOT_FOUND The processor with the handle specified by
+ ProcessorNumber does not exist.
+ @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or
+ a disabled AP.
+ @retval EFI_NOT_READY The specified AP is busy.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * EFI_SMM_SWITCH_BSP) (
+ IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
+ IN UINTN ProcessorNumber
+ );
+
+/**
+ Notify that a new processor has been added to the system.
+
+ The SMM CPU driver should add the processor to the SMM CPU list.
+
+ If the processor is disabled it won't participate any SMI handler during subsequent SMIs.
+
+ @param This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
+ @param ProcessorId The hardware ID of the processor.
+ @param ProcessorNumber The handle number of processor.
+ @param ProcessorResource A pointer to EFI_SMM_PROCESSOR_RESOURCE which holds the assigned resources.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_ALREADY_STARTED Processor already present.
+ @retval EFI_NOT_READY Space for a new handle could not be allocated.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SMM_ADD_PROCESSOR) (
+ IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
+ IN UINT64 ProcessorId,
+ OUT UINTN *ProcessorNumber
+ );
+
+/**
+ Notify that a processor is hot-removed.
+
+ Remove a processor from the CPU list of the SMM CPU driver. After this API is called, the removed processor
+ must not respond to SMIs in the coherence domain.
+
+ @param This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
+ @param ProcessorId The hardware ID of the processor.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_NOT_FOUND Processor with the hardware ID specified by ProcessorId does not exist.
+ @retval EFI_NOT_READY Specified AP is busy.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SMM_REMOVE_PROCESSOR) (
+ IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
+ IN UINTN ProcessorNumber
+ );
+
+/**
+ This return the handle number for the calling processor. This service may be
+ called from the BSP and APs.
+
+ This service returns the processor handle number for the calling processor.
+ The returned value is in the range from 0 to the total number of logical
+ processors minus 1. This service may be called from the BSP and APs.
+ If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER
+ is returned. Otherwise, the current processors handle number is returned in
+ ProcessorNumber, and EFI_SUCCESS is returned.
+
+ @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
+ @param[in] ProcessorNumber The handle number of AP that is to become the new
+ BSP. The range is from 0 to the total number of
+ logical processors minus 1.
+
+ @retval EFI_SUCCESS The current processor handle number was returned
+ in ProcessorNumber.
+ @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI * EFI_SMM_WHOAMI) (
+ IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
+ OUT UINTN *ProcessorNumber
+ );
+
+/**
+ Register exception handler.
+
+ @param This A pointer to the SMM_CPU_SERVICE_PROTOCOL instance.
+ @param ExceptionType Defines which interrupt or exception to hook. Type EFI_EXCEPTION_TYPE and
+ the valid values for this parameter are defined in EFI_DEBUG_SUPPORT_PROTOCOL
+ of the UEFI 2.0 specification.
+ @param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER
+ that is called when a processor interrupt occurs.
+ If this parameter is NULL, then the handler will be uninstalled.
+
+ @retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
+ @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was previously installed.
+ @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not previously installed.
+ @retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SMM_REGISTER_EXCEPTION_HANDLER) (
+ IN EFI_SMM_CPU_SERVICE_PROTOCOL *This,
+ IN EFI_EXCEPTION_TYPE ExceptionType,
+ IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
+ );
+
+//
+// This protocol provides CPU services from SMM.
+//
+struct _EFI_SMM_CPU_SERVICE_PROTOCOL {
+ EFI_SMM_GET_PROCESSOR_INFO GetProcessorInfo;
+ EFI_SMM_SWITCH_BSP SwitchBsp;
+ EFI_SMM_ADD_PROCESSOR AddProcessor;
+ EFI_SMM_REMOVE_PROCESSOR RemoveProcessor;
+ EFI_SMM_WHOAMI WhoAmI;
+ EFI_SMM_REGISTER_EXCEPTION_HANDLER RegisterExceptionHandler;
+};
+
+extern EFI_GUID gEfiSmmCpuServiceProtocolGuid;
+
+#endif
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