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1 | /*++\r |
| 2 | \r |
| 3 | Copyright (c) 2006, Intel Corporation \r |
| 4 | All rights reserved. This program and the accompanying materials \r |
| 5 | are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | which accompanies this distribution. The full text of the license may be found at \r |
| 7 | http://opensource.org/licenses/bsd-license.php \r |
| 8 | \r |
| 9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 11 | \r |
| 12 | Module Name:\r |
| 13 | \r |
| 14 | PeiPerformanceLib.c\r |
| 15 | \r |
| 16 | Abstract:\r |
| 17 | \r |
| 18 | Performance Library\r |
| 19 | \r |
| 20 | --*/\r |
| 21 | \r |
| 22 | /**\r |
| 23 | Gets PEI the GUID HOB for PEI performance.\r |
| 24 | \r |
| 25 | This internal function searches for the GUID HOB for PEI performance.\r |
| 26 | If that GUID HOB is not found, it will build a new one.\r |
| 27 | It returns the data area of that GUID HOB to record performance log. \r |
| 28 | \r |
| 29 | @param Handle Pointer to environment specific context used\r |
| 30 | to identify the component being measured.\r |
| 31 | @param Token Pointer to a Null-terminated ASCII string\r |
| 32 | that identifies the component being measured.\r |
| 33 | @param Module Pointer to a Null-terminated ASCII string\r |
| 34 | that identifies the module being measured.\r |
| 35 | \r |
| 36 | @retval The index of log entry in the array.\r |
| 37 | \r |
| 38 | **/\r |
| 963cbacb |
39 | STATIC\r |
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40 | PEI_PERFORMANCE_LOG_HEADER *\r |
| 41 | InternalGetPerformanceHobLog (\r |
| 42 | VOID\r |
| 43 | )\r |
| 44 | {\r |
| 45 | EFI_HOB_GUID_TYPE *GuidHob;\r |
| 46 | PEI_PERFORMANCE_LOG_HEADER *PeiPerformanceLog;\r |
| 47 | UINTN PeiPerformanceLogSize;\r |
| 48 | \r |
| 49 | GuidHob = GetFirstGuidHob (&gPeiPerformanceHobGuid);\r |
| 50 | \r |
| 51 | if (GuidHob != NULL) {\r |
| 52 | //\r |
| 53 | // PEI Performance HOB was found, then return the existing one.\r |
| 54 | //\r |
| 55 | PeiPerformanceLog = GET_GUID_HOB_DATA (GuidHob);\r |
| 56 | } else {\r |
| 57 | //\r |
| 58 | // PEI Performance HOB was not found, then build one.\r |
| 59 | //\r |
| 60 | PeiPerformanceLogSize = sizeof (PEI_PERFORMANCE_LOG_HEADER) + \r |
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61 | sizeof (PEI_PERFORMANCE_LOG_ENTRY) * PcdGet8 (PcdMaxPeiPerformanceLogEntries);\r |
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62 | PeiPerformanceLog = BuildGuidHob (&gPeiPerformanceHobGuid, PeiPerformanceLogSize);\r |
| 63 | PeiPerformanceLog = ZeroMem (PeiPerformanceLog, PeiPerformanceLogSize);\r |
| 64 | }\r |
| 65 | \r |
| 66 | return PeiPerformanceLog;\r |
| 67 | }\r |
| 68 | \r |
| 69 | /**\r |
| 70 | Searches in the log array with keyword Handle, Token and Module.\r |
| 71 | \r |
| 72 | This internal function searches for the log entry in the log array.\r |
| 73 | If there is an entry that exactly matches the given key word triple\r |
| 74 | and its end time stamp is zero, then the index of that log entry is returned;\r |
| 75 | otherwise, the the number of log entries in the array is returned. \r |
| 76 | \r |
| 77 | @param Handle Pointer to environment specific context used\r |
| 78 | to identify the component being measured.\r |
| 79 | @param Token Pointer to a Null-terminated ASCII string\r |
| 80 | that identifies the component being measured.\r |
| 81 | @param Module Pointer to a Null-terminated ASCII string\r |
| 82 | that identifies the module being measured.\r |
| 83 | \r |
| 84 | @retval The index of log entry in the array.\r |
| 85 | \r |
| 86 | **/\r |
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87 | STATIC\r |
| 4ba61e5e |
88 | UINT32\r |
| 89 | InternalSearchForLogEntry (\r |
| 90 | IN PEI_PERFORMANCE_LOG_HEADER *PeiPerformanceLog,\r |
| 91 | IN CONST VOID *Handle, OPTIONAL\r |
| 92 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 93 | IN CONST CHAR8 *Module OPTIONAL\r |
| 94 | )\r |
| 95 | {\r |
| 96 | UINT32 Index;\r |
| 97 | UINT32 NumberOfEntries;\r |
| 98 | PEI_PERFORMANCE_LOG_ENTRY *LogEntryArray;\r |
| 99 | \r |
| 100 | \r |
| 101 | if (Token == NULL) {\r |
| 102 | Token = "";\r |
| 103 | }\r |
| 104 | if (Module == NULL) {\r |
| 105 | Module = "";\r |
| 106 | }\r |
| 107 | NumberOfEntries = PeiPerformanceLog->NumberOfEntries;\r |
| 108 | LogEntryArray = (PEI_PERFORMANCE_LOG_ENTRY *) (PeiPerformanceLog + 1);\r |
| 109 | \r |
| 110 | for (Index = 0; Index < NumberOfEntries; Index++) {\r |
| 111 | if ((LogEntryArray[Index].Handle == (EFI_PHYSICAL_ADDRESS) (UINTN) Handle) &&\r |
| 112 | AsciiStrnCmp (LogEntryArray[Index].Token, Token, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&\r |
| 113 | AsciiStrnCmp (LogEntryArray[Index].Module, Module, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&\r |
| 114 | LogEntryArray[Index].EndTimeStamp == 0\r |
| 115 | ) {\r |
| 116 | break;\r |
| 117 | }\r |
| 118 | }\r |
| 119 | return Index;\r |
| 120 | } \r |
| 121 | \r |
| 122 | /**\r |
| 123 | Creates a record for the beginning of a performance measurement. \r |
| 124 | \r |
| 125 | Creates a record that contains the Handle, Token, and Module.\r |
| 126 | If TimeStamp is not zero, then TimeStamp is added to the record as the start time.\r |
| 127 | If TimeStamp is zero, then this function reads the current time stamp\r |
| 128 | and adds that time stamp value to the record as the start time.\r |
| 129 | \r |
| 130 | @param Handle Pointer to environment specific context used\r |
| 131 | to identify the component being measured.\r |
| 132 | @param Token Pointer to a Null-terminated ASCII string\r |
| 133 | that identifies the component being measured.\r |
| 134 | @param Module Pointer to a Null-terminated ASCII string\r |
| 135 | that identifies the module being measured.\r |
| 136 | @param TimeStamp 64-bit time stamp.\r |
| 137 | \r |
| 138 | @retval RETURN_SUCCESS The start of the measurement was recorded.\r |
| 139 | @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r |
| 140 | \r |
| 141 | **/\r |
| 142 | RETURN_STATUS\r |
| 143 | EFIAPI\r |
| 144 | StartPerformanceMeasurement (\r |
| 145 | IN CONST VOID *Handle, OPTIONAL\r |
| 146 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 147 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 148 | IN UINT64 TimeStamp\r |
| 149 | )\r |
| 150 | {\r |
| 151 | PEI_PERFORMANCE_LOG_HEADER *PeiPerformanceLog;\r |
| 152 | PEI_PERFORMANCE_LOG_ENTRY *LogEntryArray;\r |
| 153 | UINT32 Index;\r |
| 154 | \r |
| 155 | PeiPerformanceLog = InternalGetPerformanceHobLog ();\r |
| 156 | \r |
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157 | if (PeiPerformanceLog->NumberOfEntries >= PcdGet8 (PcdMaxPeiPerformanceLogEntries)) {\r |
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158 | return RETURN_OUT_OF_RESOURCES;\r |
| 159 | }\r |
| 160 | Index = PeiPerformanceLog->NumberOfEntries++;\r |
| 161 | LogEntryArray = (PEI_PERFORMANCE_LOG_ENTRY *) (PeiPerformanceLog + 1); \r |
| 162 | LogEntryArray[Index].Handle = (EFI_PHYSICAL_ADDRESS) (UINTN) Handle;\r |
| 163 | \r |
| 164 | if (Token != NULL) {\r |
| 165 | AsciiStrnCpy (LogEntryArray[Index].Token, Token, PEI_PERFORMANCE_STRING_LENGTH);\r |
| 166 | }\r |
| 167 | if (Module != NULL) {\r |
| 168 | AsciiStrnCpy (LogEntryArray[Index].Module, Module, PEI_PERFORMANCE_STRING_LENGTH);\r |
| 169 | }\r |
| 170 | \r |
| 171 | if (TimeStamp == 0) {\r |
| 172 | TimeStamp = GetPerformanceCounter ();\r |
| 173 | }\r |
| 174 | LogEntryArray[Index].StartTimeStamp = TimeStamp;\r |
| 175 | \r |
| 176 | return RETURN_SUCCESS;\r |
| 177 | }\r |
| 178 | \r |
| 179 | /**\r |
| 180 | Fills in the end time of a performance measurement. \r |
| 181 | \r |
| 182 | Looks up the record that matches Handle, Token, and Module.\r |
| 183 | If the record can not be found then return RETURN_NOT_FOUND.\r |
| 184 | If the record is found and TimeStamp is not zero,\r |
| 185 | then TimeStamp is added to the record as the end time.\r |
| 186 | If the record is found and TimeStamp is zero, then this function reads\r |
| 187 | the current time stamp and adds that time stamp value to the record as the end time.\r |
| 188 | If this function is called multiple times for the same record, then the end time is overwritten.\r |
| 189 | \r |
| 190 | @param Handle Pointer to environment specific context used\r |
| 191 | to identify the component being measured.\r |
| 192 | @param Token Pointer to a Null-terminated ASCII string\r |
| 193 | that identifies the component being measured.\r |
| 194 | @param Module Pointer to a Null-terminated ASCII string\r |
| 195 | that identifies the module being measured.\r |
| 196 | @param TimeStamp 64-bit time stamp.\r |
| 197 | \r |
| 198 | @retval RETURN_SUCCESS The end of the measurement was recorded.\r |
| 199 | @retval RETURN_NOT_FOUND The specified measurement record could not be found.\r |
| 200 | \r |
| 201 | **/\r |
| 202 | RETURN_STATUS\r |
| 203 | EFIAPI\r |
| 204 | EndPerformanceMeasurement (\r |
| 205 | IN CONST VOID *Handle, OPTIONAL\r |
| 206 | IN CONST CHAR8 *Token, OPTIONAL\r |
| 207 | IN CONST CHAR8 *Module, OPTIONAL\r |
| 208 | IN UINT64 TimeStamp\r |
| 209 | )\r |
| 210 | {\r |
| 211 | PEI_PERFORMANCE_LOG_HEADER *PeiPerformanceLog;\r |
| 212 | PEI_PERFORMANCE_LOG_ENTRY *LogEntryArray;\r |
| 213 | UINT32 Index;\r |
| 214 | \r |
| 215 | if (TimeStamp == 0) {\r |
| 216 | TimeStamp = GetPerformanceCounter ();\r |
| 217 | }\r |
| 218 | \r |
| 219 | PeiPerformanceLog = InternalGetPerformanceHobLog ();\r |
| 220 | Index = InternalSearchForLogEntry (PeiPerformanceLog, Handle, Token, Module);\r |
| 221 | if (Index >= PeiPerformanceLog->NumberOfEntries) {\r |
| 222 | return RETURN_NOT_FOUND;\r |
| 223 | }\r |
| 224 | LogEntryArray = (PEI_PERFORMANCE_LOG_ENTRY *) (PeiPerformanceLog + 1);\r |
| 225 | LogEntryArray[Index].EndTimeStamp = TimeStamp;\r |
| 226 | \r |
| 227 | return RETURN_SUCCESS;\r |
| 228 | }\r |
| 229 | \r |
| 230 | /**\r |
| 231 | Attempts to retrieve a performance measurement log entry from the performance measurement log. \r |
| 232 | \r |
| 233 | Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is\r |
| 234 | zero on entry, then an attempt is made to retrieve the first entry from the performance log,\r |
| 235 | and the key for the second entry in the log is returned. If the performance log is empty,\r |
| 236 | then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance\r |
| 237 | log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is\r |
| 238 | returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is\r |
| 239 | retrieved and an implementation specific non-zero key value that specifies the end of the performance\r |
| 240 | log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry\r |
| 241 | is retrieved and zero is returned. In the cases where a performance log entry can be returned,\r |
| 242 | the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp.\r |
| 243 | If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().\r |
| 244 | If Handle is NULL, then ASSERT().\r |
| 245 | If Token is NULL, then ASSERT().\r |
| 246 | If Module is NULL, then ASSERT().\r |
| 247 | If StartTimeStamp is NULL, then ASSERT().\r |
| 248 | If EndTimeStamp is NULL, then ASSERT().\r |
| 249 | \r |
| 250 | @param LogEntryKey On entry, the key of the performance measurement log entry to retrieve.\r |
| 251 | 0, then the first performance measurement log entry is retrieved.\r |
| 252 | On exit, the key of the next performance lof entry entry.\r |
| 253 | @param Handle Pointer to environment specific context used to identify the component\r |
| 254 | being measured. \r |
| 255 | @param Token Pointer to a Null-terminated ASCII string that identifies the component\r |
| 256 | being measured. \r |
| 257 | @param Module Pointer to a Null-terminated ASCII string that identifies the module\r |
| 258 | being measured.\r |
| 259 | @param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r |
| 260 | was started.\r |
| 261 | @param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r |
| 262 | was ended.\r |
| 263 | \r |
| 264 | @return The key for the next performance log entry (in general case).\r |
| 265 | \r |
| 266 | **/\r |
| 267 | UINTN\r |
| 268 | EFIAPI\r |
| 269 | GetPerformanceMeasurement (\r |
| 270 | IN UINTN LogEntryKey, \r |
| 271 | OUT CONST VOID **Handle,\r |
| 272 | OUT CONST CHAR8 **Token,\r |
| 273 | OUT CONST CHAR8 **Module,\r |
| 274 | OUT UINT64 *StartTimeStamp,\r |
| 275 | OUT UINT64 *EndTimeStamp\r |
| 276 | )\r |
| 277 | {\r |
| 278 | PEI_PERFORMANCE_LOG_HEADER *PeiPerformanceLog;\r |
| 279 | PEI_PERFORMANCE_LOG_ENTRY *CurrentLogEntry;\r |
| 280 | PEI_PERFORMANCE_LOG_ENTRY *LogEntryArray;\r |
| 281 | UINTN NumberOfEntries;\r |
| 282 | \r |
| 283 | ASSERT (Handle != NULL);\r |
| 284 | ASSERT (Token != NULL);\r |
| 285 | ASSERT (Module != NULL);\r |
| 286 | ASSERT (StartTimeStamp != NULL);\r |
| 287 | ASSERT (EndTimeStamp != NULL);\r |
| 288 | \r |
| 289 | PeiPerformanceLog = InternalGetPerformanceHobLog ();\r |
| 290 | \r |
| 291 | NumberOfEntries = (UINTN) (PeiPerformanceLog->NumberOfEntries);\r |
| 292 | LogEntryArray = (PEI_PERFORMANCE_LOG_ENTRY *) (PeiPerformanceLog + 1);\r |
| 293 | //\r |
| 294 | // Make sure that LogEntryKey is a valid log entry key.\r |
| 295 | //\r |
| 296 | ASSERT (LogEntryKey <= NumberOfEntries);\r |
| 297 | \r |
| 298 | if (LogEntryKey == NumberOfEntries) {\r |
| 299 | return 0;\r |
| 300 | }\r |
| 301 | \r |
| 302 | CurrentLogEntry = &(LogEntryArray[LogEntryKey++]);\r |
| 303 | \r |
| 304 | *Handle = (VOID *) (UINTN) (CurrentLogEntry->Handle);\r |
| 305 | *Token = CurrentLogEntry->Token;\r |
| 306 | *Module = CurrentLogEntry->Module;\r |
| 307 | *StartTimeStamp = CurrentLogEntry->StartTimeStamp;\r |
| 308 | *EndTimeStamp = CurrentLogEntry->EndTimeStamp;\r |
| 309 | \r |
| 310 | return LogEntryKey; \r |
| 311 | }\r |
| 312 | \r |
| 313 | /**\r |
| 314 | Returns TRUE if the performance measurement macros are enabled. \r |
| 315 | \r |
| 316 | This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r |
| 317 | PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned.\r |
| 318 | \r |
| 319 | @retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r |
| 320 | PcdPerformanceLibraryPropertyMask is set.\r |
| 321 | @retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r |
| 322 | PcdPerformanceLibraryPropertyMask is clear.\r |
| 323 | \r |
| 324 | **/\r |
| 325 | BOOLEAN\r |
| 326 | EFIAPI\r |
| 327 | PerformanceMeasurementEnabled (\r |
| 328 | VOID\r |
| 329 | )\r |
| 330 | {\r |
| 963cbacb |
331 | return (BOOLEAN) ((PcdGet8(PcdPerformanceLibraryPropertyMask) & PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED) != 0);\r |
| 4ba61e5e |
332 | }\r |
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