UefiCpuPkg/Library/CpuCacheInfoLib/DxeCpuCacheInfoLib.c

   1 /** @file
   2   Provides cache info for each package, core type, cache level and cache type.
   3
   4   Copyright (c) 2020 Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <PiDxe.h>
  10 #include <Library/BaseLib.h>
  11 #include <Library/DebugLib.h>
  12 #include <Library/UefiBootServicesTableLib.h>
  13 #include <Library/CpuCacheInfoLib.h>
  14 #include <InternalCpuCacheInfoLib.h>
  15
  16 /**
  17   Get EFI_MP_SERVICES_PROTOCOL pointer.
  18
  19   @param[out] MpServices    A pointer to the buffer where EFI_MP_SERVICES_PROTOCOL is stored
  20
  21   @retval EFI_SUCCESS       EFI_MP_SERVICES_PROTOCOL interface is returned
  22   @retval EFI_NOT_FOUND     EFI_MP_SERVICES_PROTOCOL interface is not found
  23 **/
  24 EFI_STATUS
  25 CpuCacheInfoGetMpServices (
  26   OUT MP_SERVICES           *MpServices
  27   )
  28 {
  29   EFI_STATUS                Status;
  30
  31   Status = gBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (VOID **)&MpServices->Protocol);
  32   ASSERT_EFI_ERROR (Status);
  33
  34   return Status;
  35 }
  36
  37 /**
  38   Activate all of the logical processors.
  39
  40   @param[in]  MpServices          MP_SERVICES structure.
  41   @param[in]  Procedure           A pointer to the function to be run on enabled logical processors.
  42   @param[in]  ProcedureArgument   The parameter passed into Procedure for all enabled logical processors.
  43 **/
  44 VOID
  45 CpuCacheInfoStartupAllCPUs (
  46   IN MP_SERVICES            MpServices,
  47   IN EFI_AP_PROCEDURE       Procedure,
  48   IN VOID                   *ProcedureArgument
  49   )
  50 {
  51   EFI_STATUS                Status;
  52
  53   Status = MpServices.Protocol->StartupAllAPs (MpServices.Protocol, Procedure, FALSE, NULL, 0, ProcedureArgument, NULL);
  54   ASSERT_EFI_ERROR (Status);
  55
  56   Procedure (ProcedureArgument);
  57 }
  58
  59 /**
  60   Get detailed information of the requested logical processor.
  61
  62   @param[in]  MpServices          MP_SERVICES structure.
  63   @param[in]  ProcessorNum        The requested logical processor number.
  64   @param[out] ProcessorInfo       A pointer to the buffer where the processor information is stored
  65 **/
  66 VOID
  67 CpuCacheInfoGetProcessorInfo (
  68   IN MP_SERVICES                MpServices,
  69   IN UINTN                      ProcessorNum,
  70   OUT EFI_PROCESSOR_INFORMATION *ProcessorInfo
  71   )
  72 {
  73   EFI_STATUS                Status;
  74
  75   Status = MpServices.Protocol->GetProcessorInfo (MpServices.Protocol, ProcessorNum, ProcessorInfo);
  76   ASSERT_EFI_ERROR (Status);
  77 }
  78
  79 /**
  80   Get the logical processor number.
  81
  82   @param[in]  MpServices          MP_SERVICES structure.
  83
  84   @retval  Return the logical processor number.
  85 **/
  86 UINT32
  87 CpuCacheInfoWhoAmI (
  88   IN MP_SERVICES            MpServices
  89   )
  90 {
  91   EFI_STATUS                Status;
  92   UINTN                     ProcessorNum;
  93
  94   Status = MpServices.Protocol->WhoAmI (MpServices.Protocol, &ProcessorNum);
  95   ASSERT_EFI_ERROR (Status);
  96
  97   return (UINT32)ProcessorNum;
  98 }
  99
 100 /**
 101   Get the total number of logical processors in the platform.
 102
 103   @param[in]  MpServices          MP_SERVICES structure.
 104
 105   @retval  Return the total number of logical processors.
 106 **/
 107 UINT32
 108 CpuCacheInfoGetNumberOfProcessors (
 109   IN MP_SERVICES            MpServices
 110   )
 111 {
 112   EFI_STATUS                Status;
 113   UINTN                     NumberOfProcessor;
 114   UINTN                     NumberOfEnabledProcessor;
 115
 116   Status = MpServices.Protocol->GetNumberOfProcessors (MpServices.Protocol, &NumberOfProcessor, &NumberOfEnabledProcessor);
 117   ASSERT_EFI_ERROR (Status);
 118
 119   return (UINT32)NumberOfProcessor;
 120 }