83facfd184
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3105 This new library uses a platform agnostic algorithm to get CPU cache information. It provides user with an API(GetCpuCacheInfo) to get detailed CPU cache information by each package, each core type included in this package, and each cache level & type. This library can be used by code that produces SMBIOS_TABLE_TYPE7 SMBIOS table. Signed-off-by: Jason Lou <yun.lou@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Rahul Kumar <rahul1.kumar@intel.com>
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/** @file
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Provides cache info for each package, core type, cache level and cache type.
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Copyright (c) 2020 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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#include <PiPei.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/PeiServicesTablePointerLib.h>
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#include <Library/CpuCacheInfoLib.h>
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#include <InternalCpuCacheInfoLib.h>
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/**
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Get EDKII_PEI_MP_SERVICES2_PPI pointer.
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@param[out] MpServices A pointer to the buffer where EDKII_PEI_MP_SERVICES2_PPI is stored
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@retval EFI_SUCCESS EDKII_PEI_MP_SERVICES2_PPI interface is returned
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@retval EFI_NOT_FOUND EDKII_PEI_MP_SERVICES2_PPI interface is not found
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**/
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EFI_STATUS
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CpuCacheInfoGetMpServices (
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OUT MP_SERVICES *MpServices
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)
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{
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EFI_STATUS Status;
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Status = PeiServicesLocatePpi (&gEdkiiPeiMpServices2PpiGuid, 0, NULL, (VOID **)&MpServices->Ppi);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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/**
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Activate all of the logical processors.
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@param[in] MpServices MP_SERVICES structure.
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@param[in] Procedure A pointer to the function to be run on enabled logical processors.
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@param[in] ProcedureArgument The parameter passed into Procedure for all enabled logical processors.
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**/
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VOID
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CpuCacheInfoStartupAllCPUs (
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IN MP_SERVICES MpServices,
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IN EFI_AP_PROCEDURE Procedure,
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IN VOID *ProcedureArgument
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)
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{
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EFI_STATUS Status;
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Status = MpServices.Ppi->StartupAllCPUs (MpServices.Ppi, Procedure, 0, ProcedureArgument);
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ASSERT_EFI_ERROR (Status);
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}
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/**
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Get detailed information of the requested logical processor.
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@param[in] MpServices MP_SERVICES structure.
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@param[in] ProcessorNum The requested logical processor number.
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@param[out] ProcessorInfo A pointer to the buffer where the processor information is stored
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**/
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VOID
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CpuCacheInfoGetProcessorInfo (
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IN MP_SERVICES MpServices,
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IN UINTN ProcessorNum,
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OUT EFI_PROCESSOR_INFORMATION *ProcessorInfo
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)
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{
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EFI_STATUS Status;
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Status = MpServices.Ppi->GetProcessorInfo (MpServices.Ppi, ProcessorNum, ProcessorInfo);
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ASSERT_EFI_ERROR (Status);
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}
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/**
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Get the logical processor number.
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@param[in] MpServices MP_SERVICES structure.
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@retval Return the logical processor number.
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**/
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UINT32
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CpuCacheInfoWhoAmI (
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IN MP_SERVICES MpServices
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)
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{
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EFI_STATUS Status;
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UINTN ProcessorNum;
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Status = MpServices.Ppi->WhoAmI (MpServices.Ppi, &ProcessorNum);
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ASSERT_EFI_ERROR (Status);
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return (UINT32)ProcessorNum;
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}
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/**
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Get the total number of logical processors in the platform.
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@param[in] MpServices MP_SERVICES structure.
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@retval Return the total number of logical processors.
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**/
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UINT32
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CpuCacheInfoGetNumberOfProcessors (
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IN MP_SERVICES MpServices
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)
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{
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EFI_STATUS Status;
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UINTN NumberOfProcessor;
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UINTN NumberOfEnabledProcessor;
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Status = MpServices.Ppi->GetNumberOfProcessors (MpServices.Ppi, &NumberOfProcessor, &NumberOfEnabledProcessor);
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ASSERT_EFI_ERROR (Status);
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return (UINT32)NumberOfProcessor;
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}
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