4a68176cb5
REF? https://bugzilla.tianocore.org/show_bug.cgi?id=3815 This patch define a new Protocol with the new services SmmWaitForAllProcessor(), which can be used by SMI handler to optionally wait for other APs to complete SMM rendezvous in relaxed AP mode. A new library SmmCpuRendezvousLib is provided to abstract the service into library API to simple SMI handler code. Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Siyuan Fu <siyuan.fu@intel.com> Cc: Zhihao Li <zhihao.li@intel.com> Signed-off-by: Zhihao Li <zhihao.li@intel.com>
238 lines
9.2 KiB
C
238 lines
9.2 KiB
C
/** @file
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SMM CPU Service protocol definition.
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Copyright (c) 2013 - 2022, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _SMM_CPU_SERVICE_PROTOCOL_H_
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#define _SMM_CPU_SERVICE_PROTOCOL_H_
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//
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// Share some definitions with MP Services and CPU Arch Protocol
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//
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#include <Protocol/MpService.h>
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#include <Protocol/Cpu.h>
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#define EFI_SMM_CPU_SERVICE_PROTOCOL_GUID \
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{ \
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0x1d202cab, 0xc8ab, 0x4d5c, { 0x94, 0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 } \
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}
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typedef struct _EFI_SMM_CPU_SERVICE_PROTOCOL EFI_SMM_CPU_SERVICE_PROTOCOL;
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//
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// Protocol functions
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//
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/**
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Gets processor information on the requested processor at the
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instant this call is made. This service may only be called from the BSP.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL
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instance.
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@param[in] ProcessorNumber The handle number of processor.
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@param[out] ProcessorInfoBuffer A pointer to the buffer where information for
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the requested processor is deposited.
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@retval EFI_SUCCESS Processor information was returned.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist in the platform.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_GET_PROCESSOR_INFO)(
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINTN ProcessorNumber,
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OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
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);
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/**
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. This call can only be performed
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by the current BSP.
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. The new BSP can take over the
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execution of the old BSP and continue seamlessly from where the old one left
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off.
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If the BSP cannot be switched prior to the return from this service, then
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EFI_UNSUPPORTED must be returned.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param[in] ProcessorNumber The handle number of AP that is to become the new
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BSP. The range is from 0 to the total number of
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logical processors minus 1.
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@retval EFI_SUCCESS BSP successfully switched.
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@retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to
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this service returning.
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@retval EFI_UNSUPPORTED Switching the BSP is not supported.
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@retval EFI_SUCCESS The calling processor is an AP.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or
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a disabled AP.
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@retval EFI_NOT_READY The specified AP is busy.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_SWITCH_BSP)(
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINTN ProcessorNumber
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);
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/**
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Notify that a new processor has been added to the system.
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The SMM CPU driver should add the processor to the SMM CPU list.
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If the processor is disabled it won't participate any SMI handler during subsequent SMIs.
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@param This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param ProcessorId The hardware ID of the processor.
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@param ProcessorNumber The handle number of processor.
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@param ProcessorResource A pointer to EFI_SMM_PROCESSOR_RESOURCE which holds the assigned resources.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ALREADY_STARTED Processor already present.
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@retval EFI_NOT_READY Space for a new handle could not be allocated.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_ADD_PROCESSOR)(
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINT64 ProcessorId,
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OUT UINTN *ProcessorNumber
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);
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/**
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Notify that a processor is hot-removed.
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Remove a processor from the CPU list of the SMM CPU driver. After this API is called, the removed processor
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must not respond to SMIs in the coherence domain.
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@param This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param ProcessorId The hardware ID of the processor.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_NOT_FOUND Processor with the hardware ID specified by ProcessorId does not exist.
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@retval EFI_NOT_READY Specified AP is busy.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_REMOVE_PROCESSOR)(
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINTN ProcessorNumber
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);
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/**
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This return the handle number for the calling processor. This service may be
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called from the BSP and APs.
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This service returns the processor handle number for the calling processor.
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The returned value is in the range from 0 to the total number of logical
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processors minus 1. This service may be called from the BSP and APs.
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If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER
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is returned. Otherwise, the current processors handle number is returned in
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ProcessorNumber, and EFI_SUCCESS is returned.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param[in] ProcessorNumber The handle number of AP that is to become the new
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BSP. The range is from 0 to the total number of
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logical processors minus 1.
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@retval EFI_SUCCESS The current processor handle number was returned
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in ProcessorNumber.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_WHOAMI)(
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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OUT UINTN *ProcessorNumber
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);
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/**
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Register exception handler.
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@param This A pointer to the SMM_CPU_SERVICE_PROTOCOL instance.
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@param ExceptionType Defines which interrupt or exception to hook. Type EFI_EXCEPTION_TYPE and
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the valid values for this parameter are defined in EFI_DEBUG_SUPPORT_PROTOCOL
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of the UEFI 2.0 specification.
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@param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER
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that is called when a processor interrupt occurs.
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If this parameter is NULL, then the handler will be uninstalled.
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@retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
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@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was previously installed.
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@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not previously installed.
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@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_REGISTER_EXCEPTION_HANDLER)(
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IN EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
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);
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//
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// This protocol provides CPU services from SMM.
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//
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struct _EFI_SMM_CPU_SERVICE_PROTOCOL {
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EFI_SMM_GET_PROCESSOR_INFO GetProcessorInfo;
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EFI_SMM_SWITCH_BSP SwitchBsp;
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EFI_SMM_ADD_PROCESSOR AddProcessor;
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EFI_SMM_REMOVE_PROCESSOR RemoveProcessor;
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EFI_SMM_WHOAMI WhoAmI;
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EFI_SMM_REGISTER_EXCEPTION_HANDLER RegisterExceptionHandler;
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};
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extern EFI_GUID gEfiSmmCpuServiceProtocolGuid;
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//
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// EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL provide SMM CPU
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// rendezvous service support.
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//
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#define EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL_GUID \
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{ \
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0xaa00d50b, 0x4911, 0x428f, { 0xb9, 0x1a, 0xa5, 0x9d, 0xdb, 0x13, 0xe2, 0x4c } \
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}
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typedef struct _EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL;
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/**
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Wait for all APs to arrive SMM mode in given timeout constraint.
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@param[in] This A pointer to the EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL instance.
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@param[in] BlockingMode Block or non-block mode.
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@retval EFI_SUCCESS All APs have arrived SMM mode except SMI disabled APs.
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@retval EFI_TIMEOUT There are APs not in SMM mode in given timeout constraint.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_WAIT_FOR_ALL_PROCESSOR)(
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IN EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL *This,
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IN BOOLEAN BlockingMode
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);
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struct _EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL {
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EDKII_WAIT_FOR_ALL_PROCESSOR WaitForAllProcessor;
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};
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extern EFI_GUID gEdkiiSmmCpuRendezvousProtocolGuid;
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#endif
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