perf.c

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/*++

Copyright (c) 2004 - 2005, Intel Corporation                                                         
All rights reserved. This program and the accompanying materials                          
are licensed and made available under the terms and conditions of the BSD License         
which accompanies this distribution.  The full text of the license may be found at        
http://opensource.org/licenses/bsd-license.php                                            
                                                                                          
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

Module Name:

  Perf.c

Abstract:

  Support for Performance primatives. 

--*/

#include "Tiano.h"
#include "EfiDriverLib.h"
#include EFI_PROTOCOL_DEFINITION (Performance)
#include EFI_PROTOCOL_DEFINITION (LoadedImage)
#include EFI_GUID_DEFINITION (Hob)
#include EFI_GUID_DEFINITION (PeiPerformanceHob)
#include "linkedlist.h"
#include "EfiHobLib.h"
#include "EfiImage.h"

EFI_STATUS
GetTimerValue (
  OUT UINT64    *TimerValue
  );

EFI_STATUS
GetPeiPerformance (
  IN EFI_HANDLE           ImageHandle,
  IN EFI_SYSTEM_TABLE     *SystemTable,
  IN UINT64               Ticker
  );

#define EFI_PERFORMANCE_DATA_SIGNATURE  EFI_SIGNATURE_32 ('P', 'E', 'D', 'A')

typedef struct {
  UINT32          Signature;
  EFI_LIST_ENTRY  Link;
  EFI_GAUGE_DATA  GaugeData;
} EFI_PERF_DATA_LIST;

#define GAUGE_DATA_FROM_LINK(_link)  \
            CR(_link, EFI_PERF_DATA_LIST, Link, EFI_PERFORMANCE_DATA_SIGNATURE)

#define GAUGE_DATA_FROM_GAUGE(_GaugeData)  \
            CR(_GaugeData, EFI_PERF_DATA_LIST, GaugeData, EFI_PERFORMANCE_DATA_SIGNATURE)

#define EFI_PERFORMANCE_SIGNATURE         EFI_SIGNATURE_32 ('P', 'E', 'R', 'F')

//
// Performance protocol instance data structure
//
typedef struct {
  UINTN                     Signature;
  EFI_HANDLE                Handle;
  EFI_PERFORMANCE_PROTOCOL  Perf;
  UINT8                     Phase;
} EFI_PERFORMANCE_INSTANCE;

//
// Performace protocol instance containing record macro
//

#define EFI_PERFORMANCE_FROM_THIS(a) \
  CR(a, EFI_PERFORMANCE_INSTANCE, Perf, EFI_PERFORMANCE_SIGNATURE)

EFI_LIST_ENTRY  mPerfDataHead = INITIALIZE_LIST_HEAD_VARIABLE(mPerfDataHead);

STATIC
VOID
GetShortPdbFileName (
  CHAR8  *PdbFileName,
  CHAR8  *GaugeString
  )
/*++

Routine Description:
  
Arguments:

Returns:

--*/
{
  UINTN Index;
  UINTN Index1;
  UINTN StartIndex;
  UINTN EndIndex;

  if (PdbFileName == NULL) {
    EfiAsciiStrCpy (GaugeString, " ");
  } else {
    StartIndex = 0;
    for (EndIndex = 0; PdbFileName[EndIndex] != 0; EndIndex++)
      ;

    for (Index = 0; PdbFileName[Index] != 0; Index++) {
      if (PdbFileName[Index] == '\\') {
        StartIndex = Index + 1;
      }

      if (PdbFileName[Index] == '.') {
        EndIndex = Index;
      }
    }

    Index1 = 0;
    for (Index = StartIndex; Index < EndIndex; Index++) {
      GaugeString[Index1] = PdbFileName[Index];
      Index1++;
      if (Index1 == EFI_PERF_PDBFILENAME_LENGTH - 1) {
        break;
      }
    }

    GaugeString[Index1] = 0;
  }

  return ;
}

STATIC
CHAR8 *
GetPdbPath (
  VOID *ImageBase
  )
/*++

Routine Description:

  Located PDB path name in PE image

Arguments:

  ImageBase - base of PE to search

Returns:

  Pointer into image at offset of PDB file name if PDB file name is found,
  Otherwise a pointer to an empty string.

--*/
{
  CHAR8                           *PdbPath;
  UINT32                          DirCount;
  EFI_IMAGE_DOS_HEADER            *DosHdr;
  EFI_IMAGE_NT_HEADERS            *NtHdr;
  EFI_IMAGE_OPTIONAL_HEADER       *OptionalHdr;
  EFI_IMAGE_DATA_DIRECTORY        *DirectoryEntry;
  EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;
  VOID                            *CodeViewEntryPointer;

  CodeViewEntryPointer  = NULL;
  PdbPath               = NULL;
  DosHdr                = ImageBase;

  if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
    NtHdr           = (EFI_IMAGE_NT_HEADERS *) ((UINT8 *) DosHdr + DosHdr->e_lfanew);
    OptionalHdr     = (VOID *) &NtHdr->OptionalHeader;
    DirectoryEntry  = (EFI_IMAGE_DATA_DIRECTORY *) &(OptionalHdr->DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
    if (DirectoryEntry->VirtualAddress != 0) {
      for (DirCount = 0;
           (DirCount < DirectoryEntry->Size / sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY)) && CodeViewEntryPointer == NULL;
           DirCount++
          ) {
        DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) (DirectoryEntry->VirtualAddress + (UINTN) ImageBase + DirCount * sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY));
        if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
          CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + (UINTN) ImageBase);
          switch (*(UINT32 *) CodeViewEntryPointer) {
          case CODEVIEW_SIGNATURE_NB10:
            PdbPath = (CHAR8 *) CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY);
            break;

          case CODEVIEW_SIGNATURE_RSDS:
            PdbPath = (CHAR8 *) CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY);
            break;

          default:
            break;
          }
        }
      }
    }
  }

  return PdbPath;
}

STATIC
VOID
GetNameFromHandle (
  IN  EFI_HANDLE     Handle,
  OUT CHAR8          *GaugeString
  )
{
  EFI_STATUS                  Status;
  EFI_LOADED_IMAGE_PROTOCOL   *Image;
  CHAR8                       *PdbFileName;
  EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;

  EfiAsciiStrCpy (GaugeString, " ");

  //
  // Get handle name from image protocol
  //
  Status = gBS->HandleProtocol (
                  Handle,
                  &gEfiLoadedImageProtocolGuid,
                  (VOID**)&Image
                  );

  if (EFI_ERROR (Status)) {
    Status = gBS->OpenProtocol (
                    Handle,
                    &gEfiDriverBindingProtocolGuid,
                    (VOID **) &DriverBinding,
                    NULL,
                    NULL,
                    EFI_OPEN_PROTOCOL_GET_PROTOCOL
                    );
    if (EFI_ERROR (Status)) {
      return ;
    }
    //
    // Get handle name from image protocol
    //
    Status = gBS->HandleProtocol (
                    DriverBinding->ImageHandle,
                    &gEfiLoadedImageProtocolGuid,
                    (VOID**)&Image
                    );
  }

  PdbFileName = GetPdbPath (Image->ImageBase);

  if (PdbFileName != NULL) {
    GetShortPdbFileName (PdbFileName, GaugeString);
  }

  return ;
}

EFI_PERF_DATA_LIST *
CreateDataNode (
  IN EFI_HANDLE       Handle,
  IN UINT16           *Token,
  IN UINT16           *Host
  )
/*++

Routine Description:

  Create a EFI_PERF_DATA_LIST data node.

Arguments:

  Handle  - Handle of gauge data
  Token   - Token of gauge data
  Host    - Host of gauge data

Returns:

  Pointer to a data node created.

--*/
{
  EFI_PERF_DATA_LIST  *Node;

  //
  // Al\ a new image structure
  //
  Node = EfiLibAllocateZeroPool (sizeof (EFI_PERF_DATA_LIST));
  if (Node != NULL) {

    Node->Signature         = EFI_PERFORMANCE_DATA_SIGNATURE;

    Node->GaugeData.Handle  = Handle;

    if (Token != NULL) {
      EfiStrCpy ((Node->GaugeData).Token, Token);
    }

    if (Host != NULL) {
      EfiStrCpy ((Node->GaugeData).Host, Host);
    }

    if (Handle != NULL) {
      GetNameFromHandle (Handle, Node->GaugeData.PdbFileName);
    }
  }

  return Node;
}


EFI_PERF_DATA_LIST *
GetDataNode (
  IN EFI_HANDLE        Handle,
  IN UINT16            *Token,
  IN UINT16            *Host,
  IN EFI_GUID          *GuidName,
  IN EFI_GAUGE_DATA    *PrevGauge
  )
/*++

Routine Description:

  Search gauge node list to find one node with matched handle, token, host and Guid name.

Arguments:

  Handle    - Handle to match
  Token     - Token to match
  Host      - Host to match
  GuidName  - Guid name to match
  PrevGauge - Start node, start from list head if NULL

Returns:

  Return pointer to the node found, NULL if not found.

--*/
{
  EFI_PERF_DATA_LIST  *Node;
  EFI_PERF_DATA_LIST  *Temp;
  EFI_PERF_DATA_LIST  *Temp2;
  EFI_LIST_ENTRY      *CurrentLink;
  EFI_GUID            NullGuid = EFI_NULL_GUID;

  Node      = NULL;
  Temp      = NULL;
  Temp2     = NULL;

  if (PrevGauge == NULL) {
    CurrentLink = mPerfDataHead.ForwardLink;
  } else {
    Temp2       = GAUGE_DATA_FROM_GAUGE (PrevGauge);
    CurrentLink = (Temp2->Link).ForwardLink;
  }

  while (CurrentLink && CurrentLink != &mPerfDataHead) {
    Node = GAUGE_DATA_FROM_LINK (CurrentLink);

    if (Handle == 0 && Token == NULL && Host == NULL && GuidName == NULL) {
      return Node;
    }

    if (Handle != (Node->GaugeData).Handle) {
      CurrentLink = CurrentLink->ForwardLink;
      continue;
    }

    if (GuidName == NULL && !EfiCompareGuid (&((Node->GaugeData).GuidName), &NullGuid)) {
      CurrentLink = CurrentLink->ForwardLink;
      continue;
    }

    if (GuidName && !EfiCompareGuid (&((Node->GaugeData).GuidName), GuidName)) {
      CurrentLink = CurrentLink->ForwardLink;
      continue;
    }

    if (Token == NULL && EfiStrCmp (Node->GaugeData.Token, L"")) {
      CurrentLink = CurrentLink->ForwardLink;
      continue;
    }

    if (Token && EfiStrCmp (Node->GaugeData.Token, Token)) {
      CurrentLink = CurrentLink->ForwardLink;
      continue;
    }

    if (Host == NULL && EfiStrCmp (Node->GaugeData.Host, L"")) {
      CurrentLink = CurrentLink->ForwardLink;
      continue;
    }

    if (Host && EfiStrCmp (Node->GaugeData.Host, Host)) {
      CurrentLink = CurrentLink->ForwardLink;
      continue;
    }

    Temp = Node;
    break;
  }

  return Temp;
}


EFI_STATUS
EFIAPI
StartGauge (
  IN EFI_PERFORMANCE_PROTOCOL         *This,
  IN EFI_HANDLE                       Handle,
  IN UINT16                           *Token,
  IN UINT16                           *Host,
  IN UINT64                           Ticker
  )
/*++

Routine Description:

  Create a guage data node and initialized it.

Arguments:

  This    - Calling context
  Handle  - Handle of gauge data
  Token   - Token of gauge data
  Host    - Host of gauge data