1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /****************************************************************************** 3 * 4 * Module Name: utdecode - Utility decoding routines (value-to-string) 5 * 6 * Copyright (C) 2000 - 2019, Intel Corp. 7 * 8 *****************************************************************************/ 9 10 #include <acpi/acpi.h> 11 #include "accommon.h" 12 #include "acnamesp.h" 13 #include "amlcode.h" 14 15 #define _COMPONENT ACPI_UTILITIES 16 ACPI_MODULE_NAME("utdecode") 17 18 /* 19 * Properties of the ACPI Object Types, both internal and external. 20 * The table is indexed by values of acpi_object_type 21 */ 22 const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES] = { 23 ACPI_NS_NORMAL, /* 00 Any */ 24 ACPI_NS_NORMAL, /* 01 Number */ 25 ACPI_NS_NORMAL, /* 02 String */ 26 ACPI_NS_NORMAL, /* 03 Buffer */ 27 ACPI_NS_NORMAL, /* 04 Package */ 28 ACPI_NS_NORMAL, /* 05 field_unit */ 29 ACPI_NS_NEWSCOPE, /* 06 Device */ 30 ACPI_NS_NORMAL, /* 07 Event */ 31 ACPI_NS_NEWSCOPE, /* 08 Method */ 32 ACPI_NS_NORMAL, /* 09 Mutex */ 33 ACPI_NS_NORMAL, /* 10 Region */ 34 ACPI_NS_NEWSCOPE, /* 11 Power */ 35 ACPI_NS_NEWSCOPE, /* 12 Processor */ 36 ACPI_NS_NEWSCOPE, /* 13 Thermal */ 37 ACPI_NS_NORMAL, /* 14 buffer_field */ 38 ACPI_NS_NORMAL, /* 15 ddb_handle */ 39 ACPI_NS_NORMAL, /* 16 Debug Object */ 40 ACPI_NS_NORMAL, /* 17 def_field */ 41 ACPI_NS_NORMAL, /* 18 bank_field */ 42 ACPI_NS_NORMAL, /* 19 index_field */ 43 ACPI_NS_NORMAL, /* 20 Reference */ 44 ACPI_NS_NORMAL, /* 21 Alias */ 45 ACPI_NS_NORMAL, /* 22 method_alias */ 46 ACPI_NS_NORMAL, /* 23 Notify */ 47 ACPI_NS_NORMAL, /* 24 Address Handler */ 48 ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 25 Resource Desc */ 49 ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 26 Resource Field */ 50 ACPI_NS_NEWSCOPE, /* 27 Scope */ 51 ACPI_NS_NORMAL, /* 28 Extra */ 52 ACPI_NS_NORMAL, /* 29 Data */ 53 ACPI_NS_NORMAL /* 30 Invalid */ 54 }; 55 56 /******************************************************************************* 57 * 58 * FUNCTION: acpi_ut_get_region_name 59 * 60 * PARAMETERS: Space ID - ID for the region 61 * 62 * RETURN: Decoded region space_id name 63 * 64 * DESCRIPTION: Translate a Space ID into a name string (Debug only) 65 * 66 ******************************************************************************/ 67 68 /* Region type decoding */ 69 70 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = { 71 "SystemMemory", /* 0x00 */ 72 "SystemIO", /* 0x01 */ 73 "PCI_Config", /* 0x02 */ 74 "EmbeddedControl", /* 0x03 */ 75 "SMBus", /* 0x04 */ 76 "SystemCMOS", /* 0x05 */ 77 "PCIBARTarget", /* 0x06 */ 78 "IPMI", /* 0x07 */ 79 "GeneralPurposeIo", /* 0x08 */ 80 "GenericSerialBus", /* 0x09 */ 81 "PlatformCommChannel" /* 0x0A */ 82 }; 83 84 const char *acpi_ut_get_region_name(u8 space_id) 85 { 86 87 if (space_id >= ACPI_USER_REGION_BEGIN) { 88 return ("UserDefinedRegion"); 89 } else if (space_id == ACPI_ADR_SPACE_DATA_TABLE) { 90 return ("DataTable"); 91 } else if (space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) { 92 return ("FunctionalFixedHW"); 93 } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) { 94 return ("InvalidSpaceId"); 95 } 96 97 return (acpi_gbl_region_types[space_id]); 98 } 99 100 /******************************************************************************* 101 * 102 * FUNCTION: acpi_ut_get_event_name 103 * 104 * PARAMETERS: event_id - Fixed event ID 105 * 106 * RETURN: Decoded event ID name 107 * 108 * DESCRIPTION: Translate a Event ID into a name string (Debug only) 109 * 110 ******************************************************************************/ 111 112 /* Event type decoding */ 113 114 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = { 115 "PM_Timer", 116 "GlobalLock", 117 "PowerButton", 118 "SleepButton", 119 "RealTimeClock", 120 }; 121 122 const char *acpi_ut_get_event_name(u32 event_id) 123 { 124 125 if (event_id > ACPI_EVENT_MAX) { 126 return ("InvalidEventID"); 127 } 128 129 return (acpi_gbl_event_types[event_id]); 130 } 131 132 /******************************************************************************* 133 * 134 * FUNCTION: acpi_ut_get_type_name 135 * 136 * PARAMETERS: type - An ACPI object type 137 * 138 * RETURN: Decoded ACPI object type name 139 * 140 * DESCRIPTION: Translate a Type ID into a name string (Debug only) 141 * 142 ******************************************************************************/ 143 144 /* 145 * Elements of acpi_gbl_ns_type_names below must match 146 * one-to-one with values of acpi_object_type 147 * 148 * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching; 149 * when stored in a table it really means that we have thus far seen no 150 * evidence to indicate what type is actually going to be stored for this 151 & entry. 152 */ 153 static const char acpi_gbl_bad_type[] = "UNDEFINED"; 154 155 /* Printable names of the ACPI object types */ 156 157 static const char *acpi_gbl_ns_type_names[] = { 158 /* 00 */ "Untyped", 159 /* 01 */ "Integer", 160 /* 02 */ "String", 161 /* 03 */ "Buffer", 162 /* 04 */ "Package", 163 /* 05 */ "FieldUnit", 164 /* 06 */ "Device", 165 /* 07 */ "Event", 166 /* 08 */ "Method", 167 /* 09 */ "Mutex", 168 /* 10 */ "Region", 169 /* 11 */ "Power", 170 /* 12 */ "Processor", 171 /* 13 */ "Thermal", 172 /* 14 */ "BufferField", 173 /* 15 */ "DdbHandle", 174 /* 16 */ "DebugObject", 175 /* 17 */ "RegionField", 176 /* 18 */ "BankField", 177 /* 19 */ "IndexField", 178 /* 20 */ "Reference", 179 /* 21 */ "Alias", 180 /* 22 */ "MethodAlias", 181 /* 23 */ "Notify", 182 /* 24 */ "AddrHandler", 183 /* 25 */ "ResourceDesc", 184 /* 26 */ "ResourceFld", 185 /* 27 */ "Scope", 186 /* 28 */ "Extra", 187 /* 29 */ "Data", 188 /* 30 */ "Invalid" 189 }; 190 191 const char *acpi_ut_get_type_name(acpi_object_type type) 192 { 193 194 if (type > ACPI_TYPE_INVALID) { 195 return (acpi_gbl_bad_type); 196 } 197 198 return (acpi_gbl_ns_type_names[type]); 199 } 200 201 const char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc) 202 { 203 ACPI_FUNCTION_TRACE(ut_get_object_type_name); 204 205 if (!obj_desc) { 206 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Null Object Descriptor\n")); 207 return_STR("[NULL Object Descriptor]"); 208 } 209 210 /* These descriptor types share a common area */ 211 212 if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) && 213 (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_NAMED)) { 214 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, 215 "Invalid object descriptor type: 0x%2.2X [%s] (%p)\n", 216 ACPI_GET_DESCRIPTOR_TYPE(obj_desc), 217 acpi_ut_get_descriptor_name(obj_desc), 218 obj_desc)); 219 220 return_STR("Invalid object"); 221 } 222 223 return_STR(acpi_ut_get_type_name(obj_desc->common.type)); 224 } 225 226 /******************************************************************************* 227 * 228 * FUNCTION: acpi_ut_get_node_name 229 * 230 * PARAMETERS: object - A namespace node 231 * 232 * RETURN: ASCII name of the node 233 * 234 * DESCRIPTION: Validate the node and return the node's ACPI name. 235 * 236 ******************************************************************************/ 237 238 const char *acpi_ut_get_node_name(void *object) 239 { 240 struct acpi_namespace_node *node = (struct acpi_namespace_node *)object; 241 242 /* Must return a string of exactly 4 characters == ACPI_NAMESEG_SIZE */ 243 244 if (!object) { 245 return ("NULL"); 246 } 247 248 /* Check for Root node */ 249 250 if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) { 251 return ("\"\\\" "); 252 } 253 254 /* Descriptor must be a namespace node */ 255 256 if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) { 257 return ("####"); 258 } 259 260 /* 261 * Ensure name is valid. The name was validated/repaired when the node 262 * was created, but make sure it has not been corrupted. 263 */ 264 acpi_ut_repair_name(node->name.ascii); 265 266 /* Return the name */ 267 268 return (node->name.ascii); 269 } 270 271 /******************************************************************************* 272 * 273 * FUNCTION: acpi_ut_get_descriptor_name 274 * 275 * PARAMETERS: object - An ACPI object 276 * 277 * RETURN: Decoded name of the descriptor type 278 * 279 * DESCRIPTION: Validate object and return the descriptor type 280 * 281 ******************************************************************************/ 282 283 /* Printable names of object descriptor types */ 284 285 static const char *acpi_gbl_desc_type_names[] = { 286 /* 00 */ "Not a Descriptor", 287 /* 01 */ "Cached Object", 288 /* 02 */ "State-Generic", 289 /* 03 */ "State-Update", 290 /* 04 */ "State-Package", 291 /* 05 */ "State-Control", 292 /* 06 */ "State-RootParseScope", 293 /* 07 */ "State-ParseScope", 294 /* 08 */ "State-WalkScope", 295 /* 09 */ "State-Result", 296 /* 10 */ "State-Notify", 297 /* 11 */ "State-Thread", 298 /* 12 */ "Tree Walk State", 299 /* 13 */ "Parse Tree Op", 300 /* 14 */ "Operand Object", 301 /* 15 */ "Namespace Node" 302 }; 303 304 const char *acpi_ut_get_descriptor_name(void *object) 305 { 306 307 if (!object) { 308 return ("NULL OBJECT"); 309 } 310 311 if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) { 312 return ("Not a Descriptor"); 313 } 314 315 return (acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE(object)]); 316 } 317 318 /******************************************************************************* 319 * 320 * FUNCTION: acpi_ut_get_reference_name 321 * 322 * PARAMETERS: object - An ACPI reference object 323 * 324 * RETURN: Decoded name of the type of reference 325 * 326 * DESCRIPTION: Decode a reference object sub-type to a string. 327 * 328 ******************************************************************************/ 329 330 /* Printable names of reference object sub-types */ 331 332 static const char *acpi_gbl_ref_class_names[] = { 333 /* 00 */ "Local", 334 /* 01 */ "Argument", 335 /* 02 */ "RefOf", 336 /* 03 */ "Index", 337 /* 04 */ "DdbHandle", 338 /* 05 */ "Named Object", 339 /* 06 */ "Debug" 340 }; 341 342 const char *acpi_ut_get_reference_name(union acpi_operand_object *object) 343 { 344 345 if (!object) { 346 return ("NULL Object"); 347 } 348 349 if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) { 350 return ("Not an Operand object"); 351 } 352 353 if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE) { 354 return ("Not a Reference object"); 355 } 356 357 if (object->reference.class > ACPI_REFCLASS_MAX) { 358 return ("Unknown Reference class"); 359 } 360 361 return (acpi_gbl_ref_class_names[object->reference.class]); 362 } 363 364 /******************************************************************************* 365 * 366 * FUNCTION: acpi_ut_get_mutex_name 367 * 368 * PARAMETERS: mutex_id - The predefined ID for this mutex. 369 * 370 * RETURN: Decoded name of the internal mutex 371 * 372 * DESCRIPTION: Translate a mutex ID into a name string (Debug only) 373 * 374 ******************************************************************************/ 375 376 /* Names for internal mutex objects, used for debug output */ 377 378 static const char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = { 379 "ACPI_MTX_Interpreter", 380 "ACPI_MTX_Namespace", 381 "ACPI_MTX_Tables", 382 "ACPI_MTX_Events", 383 "ACPI_MTX_Caches", 384 "ACPI_MTX_Memory", 385 }; 386 387 const char *acpi_ut_get_mutex_name(u32 mutex_id) 388 { 389 390 if (mutex_id > ACPI_MAX_MUTEX) { 391 return ("Invalid Mutex ID"); 392 } 393 394 return (acpi_gbl_mutex_names[mutex_id]); 395 } 396 397 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) 398 399 /* 400 * Strings and procedures used for debug only 401 */ 402 403 /******************************************************************************* 404 * 405 * FUNCTION: acpi_ut_get_notify_name 406 * 407 * PARAMETERS: notify_value - Value from the Notify() request 408 * 409 * RETURN: Decoded name for the notify value 410 * 411 * DESCRIPTION: Translate a Notify Value to a notify namestring. 412 * 413 ******************************************************************************/ 414 415 /* Names for Notify() values, used for debug output */ 416 417 static const char *acpi_gbl_generic_notify[ACPI_GENERIC_NOTIFY_MAX + 1] = { 418 /* 00 */ "Bus Check", 419 /* 01 */ "Device Check", 420 /* 02 */ "Device Wake", 421 /* 03 */ "Eject Request", 422 /* 04 */ "Device Check Light", 423 /* 05 */ "Frequency Mismatch", 424 /* 06 */ "Bus Mode Mismatch", 425 /* 07 */ "Power Fault", 426 /* 08 */ "Capabilities Check", 427 /* 09 */ "Device PLD Check", 428 /* 0A */ "Reserved", 429 /* 0B */ "System Locality Update", 430 /* 0C */ "Reserved (was previously Shutdown Request)", 431 /* Reserved in ACPI 6.0 */ 432 /* 0D */ "System Resource Affinity Update", 433 /* 0E */ "Heterogeneous Memory Attributes Update", 434 /* ACPI 6.2 */ 435 /* 0F */ "Error Disconnect Recover" 436 /* ACPI 6.3 */ 437 }; 438 439 static const char *acpi_gbl_device_notify[5] = { 440 /* 80 */ "Status Change", 441 /* 81 */ "Information Change", 442 /* 82 */ "Device-Specific Change", 443 /* 83 */ "Device-Specific Change", 444 /* 84 */ "Reserved" 445 }; 446 447 static const char *acpi_gbl_processor_notify[5] = { 448 /* 80 */ "Performance Capability Change", 449 /* 81 */ "C-State Change", 450 /* 82 */ "Throttling Capability Change", 451 /* 83 */ "Guaranteed Change", 452 /* 84 */ "Minimum Excursion" 453 }; 454 455 static const char *acpi_gbl_thermal_notify[5] = { 456 /* 80 */ "Thermal Status Change", 457 /* 81 */ "Thermal Trip Point Change", 458 /* 82 */ "Thermal Device List Change", 459 /* 83 */ "Thermal Relationship Change", 460 /* 84 */ "Reserved" 461 }; 462 463 const char *acpi_ut_get_notify_name(u32 notify_value, acpi_object_type type) 464 { 465 466 /* 00 - 0F are "common to all object types" (from ACPI Spec) */ 467 468 if (notify_value <= ACPI_GENERIC_NOTIFY_MAX) { 469 return (acpi_gbl_generic_notify[notify_value]); 470 } 471 472 /* 10 - 7F are reserved */ 473 474 if (notify_value <= ACPI_MAX_SYS_NOTIFY) { 475 return ("Reserved"); 476 } 477 478 /* 80 - 84 are per-object-type */ 479 480 if (notify_value <= ACPI_SPECIFIC_NOTIFY_MAX) { 481 switch (type) { 482 case ACPI_TYPE_ANY: 483 case ACPI_TYPE_DEVICE: 484 return (acpi_gbl_device_notify[notify_value - 0x80]); 485 486 case ACPI_TYPE_PROCESSOR: 487 return (acpi_gbl_processor_notify[notify_value - 0x80]); 488 489 case ACPI_TYPE_THERMAL: 490 return (acpi_gbl_thermal_notify[notify_value - 0x80]); 491 492 default: 493 return ("Target object type does not support notifies"); 494 } 495 } 496 497 /* 84 - BF are device-specific */ 498 499 if (notify_value <= ACPI_MAX_DEVICE_SPECIFIC_NOTIFY) { 500 return ("Device-Specific"); 501 } 502 503 /* C0 and above are hardware-specific */ 504 505 return ("Hardware-Specific"); 506 } 507 508 /******************************************************************************* 509 * 510 * FUNCTION: acpi_ut_get_argument_type_name 511 * 512 * PARAMETERS: arg_type - an ARGP_* parser argument type 513 * 514 * RETURN: Decoded ARGP_* type 515 * 516 * DESCRIPTION: Decode an ARGP_* parser type, as defined in the amlcode.h file, 517 * and used in the acopcode.h file. For example, ARGP_TERMARG. 518 * Used for debug only. 519 * 520 ******************************************************************************/ 521 522 static const char *acpi_gbl_argument_type[20] = { 523 /* 00 */ "Unknown ARGP", 524 /* 01 */ "ByteData", 525 /* 02 */ "ByteList", 526 /* 03 */ "CharList", 527 /* 04 */ "DataObject", 528 /* 05 */ "DataObjectList", 529 /* 06 */ "DWordData", 530 /* 07 */ "FieldList", 531 /* 08 */ "Name", 532 /* 09 */ "NameString", 533 /* 0A */ "ObjectList", 534 /* 0B */ "PackageLength", 535 /* 0C */ "SuperName", 536 /* 0D */ "Target", 537 /* 0E */ "TermArg", 538 /* 0F */ "TermList", 539 /* 10 */ "WordData", 540 /* 11 */ "QWordData", 541 /* 12 */ "SimpleName", 542 /* 13 */ "NameOrRef" 543 }; 544 545 const char *acpi_ut_get_argument_type_name(u32 arg_type) 546 { 547 548 if (arg_type > ARGP_MAX) { 549 return ("Unknown ARGP"); 550 } 551 552 return (acpi_gbl_argument_type[arg_type]); 553 } 554 555 #endif 556 557 /******************************************************************************* 558 * 559 * FUNCTION: acpi_ut_valid_object_type 560 * 561 * PARAMETERS: type - Object type to be validated 562 * 563 * RETURN: TRUE if valid object type, FALSE otherwise 564 * 565 * DESCRIPTION: Validate an object type 566 * 567 ******************************************************************************/ 568 569 u8 acpi_ut_valid_object_type(acpi_object_type type) 570 { 571 572 if (type > ACPI_TYPE_LOCAL_MAX) { 573 574 /* Note: Assumes all TYPEs are contiguous (external/local) */ 575 576 return (FALSE); 577 } 578 579 return (TRUE); 580 } 581