summaryrefslogtreecommitdiffstats
path: root/PerformancePkg/Dp_App/DpUtilities.c
blob: 873620826dc36bec759f8c6f5b089e9eca534c57 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
/** @file
  Utility functions used by the Dp application.

  Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
  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.
**/

#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/TimerLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Library/PrintLib.h>
#include <Library/HiiLib.h>
#include <Library/PcdLib.h>
#include <Library/UefiLib.h>
#include <Library/DevicePathLib.h>

#include <Pi/PiFirmwareFile.h>
#include <Library/DxeServicesLib.h>

#include <Protocol/LoadedImage.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/ComponentName2.h>
#include <Protocol/DevicePath.h>
#include <Protocol/DevicePathToText.h>

#include <Guid/Performance.h>

#include "Dp.h"
#include "Literals.h"
#include "DpInternal.h"

/**
  Wrap original FreePool to check NULL pointer first.

  @param[in]    Buffer      The pointer to the buffer to free.

**/
VOID
SafeFreePool (
  IN VOID   *Buffer
  )
{
  if (Buffer != NULL) {
    FreePool (Buffer);
  }
}

/** 
  Calculate an event's duration in timer ticks.
  
  Given the count direction and the event's start and end timer values,
  calculate the duration of the event in timer ticks.  Information for
  the current measurement is pointed to by the parameter.
  
  If the measurement's start time is 1, it indicates that the developer
  is indicating that the measurement began at the release of reset.
  The start time is adjusted to the timer's starting count before performing
  the elapsed time calculation.
  
  The calculated duration, in ticks, is the absolute difference between
  the measurement's ending and starting counts.
  
  @param Measurement   Pointer to a MEASUREMENT_RECORD structure containing
                       data for the current measurement.
  
  @return              The 64-bit duration of the event.
**/
UINT64
GetDuration (
  IN OUT MEASUREMENT_RECORD   *Measurement
  )
{
  UINT64    Duration;
  BOOLEAN   Error;

  // PERF_START macros are called with a value of 1 to indicate
  // the beginning of time.  So, adjust the start ticker value
  // to the real beginning of time.
  // Assumes no wraparound.  Even then, there is a very low probability
  // of having a valid StartTicker value of 1.
  if (Measurement->StartTimeStamp == 1) {
    Measurement->StartTimeStamp = TimerInfo.StartCount;
  }
  if (TimerInfo.CountUp) {
    Duration = Measurement->EndTimeStamp - Measurement->StartTimeStamp;
    Error = (BOOLEAN)(Duration > Measurement->EndTimeStamp);
  }
  else {
    Duration = Measurement->StartTimeStamp - Measurement->EndTimeStamp;
    Error = (BOOLEAN)(Duration > Measurement->StartTimeStamp);
  }

  if (Error) {
    DEBUG ((EFI_D_ERROR, ALit_TimerLibError));
    Duration = 0;
  }
  return Duration;
}

/** 
  Determine whether the Measurement record is for an EFI Phase.
  
  The Token and Module members of the measurement record are checked.
  Module must be empty and Token must be one of SEC, PEI, DXE, BDS, or SHELL.
  
  @param[in]  Measurement A pointer to the Measurement record to test.
  
  @retval     TRUE        The measurement record is for an EFI Phase.
  @retval     FALSE       The measurement record is NOT for an EFI Phase.
**/
BOOLEAN
IsPhase(
  IN MEASUREMENT_RECORD        *Measurement
  )
{
  BOOLEAN   RetVal;

  RetVal = (BOOLEAN)( ( *Measurement->Module == '\0')                               &&
            ((AsciiStrnCmp (Measurement->Token, ALit_SEC, PERF_TOKEN_LENGTH) == 0)    ||
             (AsciiStrnCmp (Measurement->Token, ALit_PEI, PERF_TOKEN_LENGTH) == 0)    ||
             (AsciiStrnCmp (Measurement->Token, ALit_DXE, PERF_TOKEN_LENGTH) == 0)    ||
             (AsciiStrnCmp (Measurement->Token, ALit_BDS, PERF_TOKEN_LENGTH) == 0))
            );
  return RetVal;
}

/** 
  Get the file name portion of the Pdb File Name.
  
  The portion of the Pdb File Name between the last backslash and
  either a following period or the end of the string is converted
  to Unicode and copied into UnicodeBuffer.  The name is truncated,
  if necessary, to ensure that UnicodeBuffer is not overrun.
  
  @param[in]  PdbFileName     Pdb file name.
  @param[out] UnicodeBuffer   The resultant Unicode File Name.
  
**/
VOID
GetShortPdbFileName (
  IN  CHAR8     *PdbFileName,
  OUT CHAR16    *UnicodeBuffer
  )
{
  UINTN IndexA;     // Current work location within an ASCII string.
  UINTN IndexU;     // Current work location within a Unicode string.
  UINTN StartIndex;
  UINTN EndIndex;

  ZeroMem (UnicodeBuffer, DXE_PERFORMANCE_STRING_LENGTH * sizeof (CHAR16));

  if (PdbFileName == NULL) {
    StrCpy (UnicodeBuffer, L" ");
  } else {
    StartIndex = 0;
    for (EndIndex = 0; PdbFileName[EndIndex] != 0; EndIndex++)
      ;
    for (IndexA = 0; PdbFileName[IndexA] != 0; IndexA++) {
      if (PdbFileName[IndexA] == '\\') {
        StartIndex = IndexA + 1;
      }

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

    IndexU = 0;
    for (IndexA = StartIndex; IndexA < EndIndex; IndexA++) {
      UnicodeBuffer[IndexU] = (CHAR16) PdbFileName[IndexA];
      IndexU++;
      if (IndexU >= DXE_PERFORMANCE_STRING_LENGTH) {
        UnicodeBuffer[DXE_PERFORMANCE_STRING_LENGTH] = 0;
        break;
      }
    }
  }
}

/** 
  Get a human readable name for an image handle.
  The following methods will be tried orderly:
    1. Image PDB
    2. ComponentName2 protocol
    3. FFS UI section
    4. Image GUID
    5. Image DevicePath
    6. Unknown Driver Name

  @param[in]    Handle

  @post   The resulting Unicode name string is stored in the
          mGaugeString global array.

**/
VOID
GetNameFromHandle (
  IN EFI_HANDLE   Handle
  )
{
  EFI_STATUS                  Status;
  EFI_LOADED_IMAGE_PROTOCOL   *Image;
  CHAR8                       *PdbFileName;
  EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;
  EFI_STRING                  StringPtr;
  EFI_DEVICE_PATH_PROTOCOL    *LoadedImageDevicePath;
  EFI_DEVICE_PATH_PROTOCOL    *DevicePath;
  EFI_GUID                    *NameGuid;
  CHAR16                      *NameString;
  UINTN                       StringSize;
  CHAR8                       *PlatformLanguage;
  EFI_COMPONENT_NAME2_PROTOCOL      *ComponentName2;
  EFI_DEVICE_PATH_TO_TEXT_PROTOCOL  *DevicePathToText;

  //
  // Method 1: Get the name string from image PDB
  //
  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)) {
      Status = gBS->HandleProtocol (
                      DriverBinding->ImageHandle,
                      &gEfiLoadedImageProtocolGuid,
                      (VOID **) &Image
                      );
    }
  }

  if (!EFI_ERROR (Status)) {
    PdbFileName = PeCoffLoaderGetPdbPointer (Image->ImageBase);

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

  //
  // Method 2: Get the name string from ComponentName2 protocol
  //
  Status = gBS->HandleProtocol (
                  Handle,
                  &gEfiComponentName2ProtocolGuid,
                  (VOID **) &ComponentName2
                  );
  if (!EFI_ERROR (Status)) {
    //
    // Get the current platform language setting
    //
    PlatformLanguage = GetEfiGlobalVariable (L"PlatformLang");
    Status = ComponentName2->GetDriverName (
                               ComponentName2,
                               PlatformLanguage != NULL ? PlatformLanguage : "en-US",
                               &StringPtr
                               );
    if (!EFI_ERROR (Status)) {
      SafeFreePool (PlatformLanguage);
      StrnCpy (mGaugeString, StringPtr, DP_GAUGE_STRING_LENGTH);
      mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;
      return;
    }
  }

  Status = gBS->HandleProtocol (
                  Handle,
                  &gEfiLoadedImageDevicePathProtocolGuid,
                  (VOID **) &LoadedImageDevicePath
                  );
  if (!EFI_ERROR (Status)) {
    DevicePath = LoadedImageDevicePath;

    //
    // Try to get image GUID from LoadedImageDevicePath protocol
    //
    NameGuid = NULL;
    while (!IsDevicePathEndType (DevicePath)) {
      NameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) DevicePath);
      if (NameGuid != NULL) {
        break;
      }
      DevicePath = NextDevicePathNode (DevicePath);
    }

    if (NameGuid != NULL) {
      //
      // Try to get the image's FFS UI section by image GUID
      //
      NameString = NULL;
      StringSize = 0;
      Status = GetSectionFromAnyFv (
                NameGuid,
                EFI_SECTION_USER_INTERFACE,
                0,
                (VOID **) &NameString,
                &StringSize
                );

      if (!EFI_ERROR (Status)) {
        //
        // Method 3. Get the name string from FFS UI section
        //
        StrnCpy (mGaugeString, NameString, DP_GAUGE_STRING_LENGTH);
        mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;
        FreePool (NameString);
      } else {
        //
        // Method 4: Get the name string from image GUID
        //
        UnicodeSPrint (mGaugeString, sizeof (mGaugeString), L"%g", NameGuid);
      }
      return;
    } else {
      //
      // Method 5: Get the name string from image DevicePath
      //
      Status = gBS->LocateProtocol (
                      &gEfiDevicePathToTextProtocolGuid,
                      NULL,
                      (VOID **) &DevicePathToText
                      );
      if (!EFI_ERROR (Status)) {
        NameString = DevicePathToText->ConvertDevicePathToText (LoadedImageDevicePath, TRUE, FALSE);
        if (NameString != NULL) {
          StrnCpy (mGaugeString, NameString, DP_GAUGE_STRING_LENGTH);
          mGaugeString[DP_GAUGE_STRING_LENGTH] = 0;
          FreePool (NameString);
          return;
        }
      }
    }
  }

  //
  // Method 6: Unknown Driver Name
  //
  StringPtr = HiiGetString (gHiiHandle, STRING_TOKEN (STR_DP_ERROR_NAME), NULL);
  ASSERT (StringPtr != NULL);
  StrCpy (mGaugeString, StringPtr);
  FreePool (StringPtr);
  return;
}

/** 
  Calculate the Duration in microseconds.
  
  Duration is multiplied by 1000, instead of Frequency being divided by 1000 or
  multiplying the result by 1000, in order to maintain precision.  Since Duration is
  a 64-bit value, multiplying it by 1000 is unlikely to produce an overflow.
  
  The time is calculated as (Duration * 1000) / Timer_Frequency.
  
  @param[in]  Duration   The event duration in timer ticks.
  
  @return     A 64-bit value which is the Elapsed time in microseconds.
**/
UINT64
DurationInMicroSeconds (
  IN UINT64 Duration
  )
{
  UINT64 Temp;

  Temp = MultU64x32 (Duration, 1000);
  return DivU64x32 (Temp, TimerInfo.Frequency);
}

/** 
  Formatted Print using a Hii Token to reference the localized format string.
  
  @param[in]  Token   A HII token associated with a localized Unicode string.
  @param[in]  ...     The variable argument list.
  
  @return             The number of characters converted by UnicodeVSPrint().
  
**/
UINTN
PrintToken (
  IN UINT16           Token,
  ...
  )
{
  VA_LIST           Marker;
  EFI_STRING        StringPtr;
  UINTN             Return;
  UINTN             BufferSize;

  StringPtr = HiiGetString (gHiiHandle, Token, NULL);
  ASSERT (StringPtr != NULL);

  VA_START (Marker, Token);

  BufferSize = (PcdGet32 (PcdUefiLibMaxPrintBufferSize) + 1) * sizeof (CHAR16);

  if (mPrintTokenBuffer == NULL) {
    mPrintTokenBuffer = AllocatePool (BufferSize);
    ASSERT (mPrintTokenBuffer != NULL);
  }
  SetMem( mPrintTokenBuffer, BufferSize, 0);

  Return = UnicodeVSPrint (mPrintTokenBuffer, BufferSize, StringPtr, Marker);
  if (Return > 0 && gST->ConOut != NULL) {
    gST->ConOut->OutputString (gST->ConOut, mPrintTokenBuffer);
  }
  FreePool (StringPtr);
  return Return;
}

/** 
  Get index of Measurement Record's match in the CumData array.
  
  If the Measurement's Token value matches a Token in one of the CumData
  records, the index of the matching record is returned.  The returned
  index is a signed value so that negative values can indicate that
  the Measurement didn't match any entry in the CumData array.
  
  @param[in]  Measurement A pointer to a Measurement Record to match against the CumData array.
  
  @retval     <0    Token is not in the CumData array.
  @retval     >=0   Return value is the index into CumData where Token is found.
**/
INTN
GetCumulativeItem(
  IN MEASUREMENT_RECORD   *Measurement
  )
{
  INTN    Index;

  for( Index = 0; Index < (INTN)NumCum; ++Index) {
    if (AsciiStrnCmp (Measurement->Token, CumData[Index].Name, PERF_TOKEN_LENGTH) == 0) {
      return Index;  // Exit, we found a match
    }
  }
  // If the for loop exits, Token was not found.
  return -1;   // Indicate failure
}