51b96e4b4c
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3190 Add MpService dependency to enforce the executability of CpuCacheInfoLib. 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>
75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
/** @file
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Header file for CPU Cache info Library.
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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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#ifndef _CPU_CACHE_INFO_LIB_H_
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#define _CPU_CACHE_INFO_LIB_H_
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typedef struct {
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//
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// Package number.
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//
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UINT32 Package;
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//
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// Core type of logical processor.
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// Value = CPUID.1Ah:EAX[31:24]
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//
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UINT8 CoreType;
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//
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// Level of the cache that this package's this type of logical processor corresponds to.
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// Value = CPUID.04h:EAX[07:05]
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//
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UINT8 CacheLevel : 3;
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//
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// Type of the cache that this package's this type of logical processor corresponds to.
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// Value = CPUID.04h:EAX[04:00]
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//
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UINT8 CacheType : 5;
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//
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// Ways of associativity.
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// Value = CPUID.04h:EBX[31:22]
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//
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UINT16 CacheWays;
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//
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// Size of single cache that this package's this type of logical processor corresponds to.
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// Value = (CPUID.04h:EBX[31:22] + 1) * (CPUID.04h:EBX[21:12] + 1) *
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// (CPUID.04h:EBX[11:00] + 1) * (CPUID.04h:ECX[31:00] + 1)
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//
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UINT32 CacheSizeinKB;
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//
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// Number of the cache that this package's this type of logical processor corresponds to.
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// Have subtracted the number of caches that are shared.
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//
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UINT16 CacheCount;
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} CPU_CACHE_INFO;
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/**
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Get CpuCacheInfo data array.
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@param[in, out] CpuCacheInfo Pointer to the CpuCacheInfo array.
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@param[in, out] CpuCacheInfoCount As input, point to the length of response CpuCacheInfo array.
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As output, point to the actual length of response CpuCacheInfo array.
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@retval EFI_SUCCESS Function completed successfully.
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@retval EFI_INVALID_PARAMETER CpuCacheInfoCount is NULL.
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@retval EFI_INVALID_PARAMETER CpuCacheInfo is NULL while CpuCacheInfoCount contains the value
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greater than zero.
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@retval EFI_UNSUPPORTED Processor does not support CPUID_CACHE_PARAMS Leaf.
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@retval EFI_OUT_OF_RESOURCES Required resources could not be allocated.
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@retval EFI_BUFFER_TOO_SMALL CpuCacheInfoCount is too small to hold the response CpuCacheInfo
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array. CpuCacheInfoCount has been updated with the length needed
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to complete the request.
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**/
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EFI_STATUS
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EFIAPI
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GetCpuCacheInfo (
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IN OUT CPU_CACHE_INFO *CpuCacheInfo,
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IN OUT UINTN *CpuCacheInfoCount
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);
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#endif
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