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[mirror_edk2.git] / Tools / Source / TianoTools / Common / PeiLib / Perf.c

/*++\r
\r
Copyright (c) 2004 - 2005, Intel Corporation                                                         \r
All rights reserved. This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
Module Name:\r
\r
  Perf.c\r
\r
Abstract:\r
\r
  Support for performance primitives. \r
\r
--*/\r
\r
#include "Tiano.h"\r
#include "Pei.h"\r
#include "PeiLib.h"\r
#include "PeiHob.h"\r
\r
#include EFI_GUID_DEFINITION (PeiPerformanceHob)\r
\r
//\r
// Perfomance HOB data definitions\r
//\r
\r
#define MAX_PEI_PERF_LOG_ENTRIES 28\r
\r
//\r
// Prototype functions\r
//  \r
EFI_STATUS\r
GetTimerValue (\r
  OUT UINT64    *TimerValue\r
  );\r
\r
\r
VOID\r
PeiPerfMeasure (\r
  EFI_PEI_SERVICES              **PeiServices,\r
  IN UINT16                     *Token,\r
  IN EFI_FFS_FILE_HEADER        *FileHeader,\r
  IN BOOLEAN                    EntryExit,\r
  IN UINT64                     Value\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Log a timestamp count.\r
\r
Arguments:\r
\r
  PeiServices - Pointer to the PEI Core Services table\r
  \r
  Token       - Pointer to Token Name\r
  \r
  FileHeader  - Pointer to the file header\r
\r
  EntryExit   - Indicates start or stop measurement\r
\r
  Value       - The start time or the stop time\r
\r
Returns:\r
\r
--*/\r
{\r
  EFI_STATUS                         Status;\r
  EFI_HOB_GUID_TYPE                  *Hob;\r
  EFI_HOB_GUID_DATA_PERFORMANCE_LOG  *PerfHobData;\r
  PEI_PERFORMANCE_MEASURE_LOG_ENTRY  *Log;\r
  EFI_PEI_PPI_DESCRIPTOR             *PerfHobDescriptor;\r
  UINT64                             TimeCount;\r
  INTN                               Index;\r
  UINTN                              Index2;\r
  EFI_GUID                           *Guid;\r
  EFI_GUID                           *CheckGuid;\r
\r
  TimeCount = 0;\r
  //\r
  // Get the END time as early as possible to make it more accurate.\r
  //\r
  if (EntryExit) {\r
    GetTimerValue (&TimeCount);\r
  }\r
\r
  //\r
  // Locate the Pei Performance Log Hob.\r
  //\r
  Status = (*PeiServices)->LocatePpi (\r
                             PeiServices,\r
                             &gEfiPeiPerformanceHobGuid,\r
                             0,\r
                             &PerfHobDescriptor,\r
                             NULL\r
                             );\r
\r
  //\r
  // If the Performance Hob was not found, build and install one.\r
  //\r
  if (EFI_ERROR(Status)) {\r
    Status = PeiBuildHobGuid (\r
               PeiServices,\r
               &gEfiPeiPerformanceHobGuid,\r
               (sizeof(EFI_HOB_GUID_DATA_PERFORMANCE_LOG) +\r
                 ((MAX_PEI_PERF_LOG_ENTRIES-1) * \r
                 sizeof(PEI_PERFORMANCE_MEASURE_LOG_ENTRY)) +\r
                 sizeof(EFI_PEI_PPI_DESCRIPTOR)\r
               ),\r
               &Hob\r
               );\r
    ASSERT_PEI_ERROR(PeiServices, Status);\r
\r
    PerfHobData = (EFI_HOB_GUID_DATA_PERFORMANCE_LOG *)(Hob+1);\r
    PerfHobData->NumberOfEntries = 0;\r
\r
    PerfHobDescriptor = (EFI_PEI_PPI_DESCRIPTOR *)((UINT8 *)(PerfHobData+1) +\r
                                                     (sizeof(PEI_PERFORMANCE_MEASURE_LOG_ENTRY) *\r
                                                       (MAX_PEI_PERF_LOG_ENTRIES-1)\r
                                                     )\r
                                                  );\r
    PerfHobDescriptor->Flags = (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST);\r
    PerfHobDescriptor->Guid = &gEfiPeiPerformanceHobGuid;\r
    PerfHobDescriptor->Ppi = NULL;\r
\r
    (*PeiServices)->InstallPpi (\r
                      PeiServices,\r
                      PerfHobDescriptor\r
                      );\r
  }\r
\r
  PerfHobData = (EFI_HOB_GUID_DATA_PERFORMANCE_LOG *)(((UINT8 *)(PerfHobDescriptor)) -\r
                                                        ((sizeof(PEI_PERFORMANCE_MEASURE_LOG_ENTRY) *\r
                                                           (MAX_PEI_PERF_LOG_ENTRIES-1)\r
                                                         )\r
                                                         + sizeof(EFI_HOB_GUID_DATA_PERFORMANCE_LOG)\r
                                                      )\r
                                                     );\r
\r
  if (PerfHobData->NumberOfEntries >= MAX_PEI_PERF_LOG_ENTRIES) {\r
    return;\r
  }\r
\r
  if (!EntryExit) {\r
    Log = &(PerfHobData->Log[PerfHobData->NumberOfEntries]);\r
    (*PeiServices)->SetMem (Log, sizeof(PEI_PERFORMANCE_MEASURE_LOG_ENTRY), 0);\r
\r
    //\r
    // If not NULL pointer, copy the file name\r
    //\r
    if (FileHeader != NULL) {\r
      Log->Name = FileHeader->Name;\r
    }\r
\r
    //\r
    // Copy the description string\r
    //\r
    (*PeiServices)->CopyMem (\r
                      &(Log->DescriptionString), \r
                      Token,\r
                      (PEI_PERF_MAX_DESC_STRING-1) * sizeof(UINT16)\r
                      );\r
\r
    //\r
    // Get the start time as late as possible to make it more accurate.\r
    //\r
    GetTimerValue (&TimeCount);\r
\r
    //\r
    // Record the time stamp.\r
    //\r
    if (Value != 0) {\r
      Log->StartTimeCount = Value;\r
    } else {\r
      Log->StartTimeCount = TimeCount;\r
    }\r
    Log->StopTimeCount = 0;\r
\r
    //\r
    // Increment the number of valid log entries.\r
    //\r
    PerfHobData->NumberOfEntries++;\r
\r
  } else {\r
\r
    for (Index = PerfHobData->NumberOfEntries-1; Index >= 0; Index--) {\r
      Log = NULL;\r
      for (Index2 = 0; Index2 < PEI_PERF_MAX_DESC_STRING; Index2++) {\r
        if (PerfHobData->Log[Index].DescriptionString[Index2] == 0) {\r
          Log = &(PerfHobData->Log[Index]);\r
          break;\r
        }\r
        if (PerfHobData->Log[Index].DescriptionString[Index2] !=\r
            Token[Index2]) {\r
          break;\r
        }\r
      }\r
      if (Log != NULL) {\r
        if (FileHeader != NULL) {\r
          Guid = &(Log->Name);\r
          CheckGuid = &(FileHeader->Name);\r
          if ((((INT32 *)Guid)[0] == ((INT32 *)CheckGuid)[0]) &&\r
              (((INT32 *)Guid)[1] == ((INT32 *)CheckGuid)[1]) &&\r
              (((INT32 *)Guid)[2] == ((INT32 *)CheckGuid)[2]) &&\r
              (((INT32 *)Guid)[3] == ((INT32 *)CheckGuid)[3]))  {\r
            if (Value != 0) {\r
              Log->StopTimeCount = Value;\r
            } else {\r
             Log->StopTimeCount = TimeCount;\r
            }\r
            break;\r
          }\r
        } else {\r
          if (Value != 0) {\r
            Log->StopTimeCount = Value;\r
          } else {\r
           Log->StopTimeCount = TimeCount;\r
          }\r
          break;\r
        }\r
      }\r
    }\r
            \r
  }\r
\r
  return;\r
}\r