1 /****************************************************************************** 2 * 3 * Module Name: nsrepair2 - Repair for objects returned by specific 4 * predefined methods 5 * 6 *****************************************************************************/ 7 8 /* 9 * Copyright (C) 2000 - 2017, Intel Corp. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer, 17 * without modification. 18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 * substantially similar to the "NO WARRANTY" disclaimer below 20 * ("Disclaimer") and any redistribution must be conditioned upon 21 * including a substantially similar Disclaimer requirement for further 22 * binary redistribution. 23 * 3. Neither the names of the above-listed copyright holders nor the names 24 * of any contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * Alternatively, this software may be distributed under the terms of the 28 * GNU General Public License ("GPL") version 2 as published by the Free 29 * Software Foundation. 30 * 31 * NO WARRANTY 32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGES. 43 */ 44 45 #include "acpi.h" 46 #include "accommon.h" 47 #include "acnamesp.h" 48 49 #define _COMPONENT ACPI_NAMESPACE 50 ACPI_MODULE_NAME ("nsrepair2") 51 52 53 /* 54 * Information structure and handler for ACPI predefined names that can 55 * be repaired on a per-name basis. 56 */ 57 typedef 58 ACPI_STATUS (*ACPI_REPAIR_FUNCTION) ( 59 ACPI_EVALUATE_INFO *Info, 60 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 61 62 typedef struct acpi_repair_info 63 { 64 char Name[ACPI_NAME_SIZE]; 65 ACPI_REPAIR_FUNCTION RepairFunction; 66 67 } ACPI_REPAIR_INFO; 68 69 70 /* Local prototypes */ 71 72 static const ACPI_REPAIR_INFO * 73 AcpiNsMatchComplexRepair ( 74 ACPI_NAMESPACE_NODE *Node); 75 76 static ACPI_STATUS 77 AcpiNsRepair_ALR ( 78 ACPI_EVALUATE_INFO *Info, 79 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 80 81 static ACPI_STATUS 82 AcpiNsRepair_CID ( 83 ACPI_EVALUATE_INFO *Info, 84 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 85 86 static ACPI_STATUS 87 AcpiNsRepair_CST ( 88 ACPI_EVALUATE_INFO *Info, 89 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 90 91 static ACPI_STATUS 92 AcpiNsRepair_FDE ( 93 ACPI_EVALUATE_INFO *Info, 94 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 95 96 static ACPI_STATUS 97 AcpiNsRepair_HID ( 98 ACPI_EVALUATE_INFO *Info, 99 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 100 101 static ACPI_STATUS 102 AcpiNsRepair_PRT ( 103 ACPI_EVALUATE_INFO *Info, 104 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 105 106 static ACPI_STATUS 107 AcpiNsRepair_PSS ( 108 ACPI_EVALUATE_INFO *Info, 109 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 110 111 static ACPI_STATUS 112 AcpiNsRepair_TSS ( 113 ACPI_EVALUATE_INFO *Info, 114 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 115 116 static ACPI_STATUS 117 AcpiNsCheckSortedList ( 118 ACPI_EVALUATE_INFO *Info, 119 ACPI_OPERAND_OBJECT *ReturnObject, 120 UINT32 StartIndex, 121 UINT32 ExpectedCount, 122 UINT32 SortIndex, 123 UINT8 SortDirection, 124 char *SortKeyName); 125 126 /* Values for SortDirection above */ 127 128 #define ACPI_SORT_ASCENDING 0 129 #define ACPI_SORT_DESCENDING 1 130 131 static void 132 AcpiNsRemoveElement ( 133 ACPI_OPERAND_OBJECT *ObjDesc, 134 UINT32 Index); 135 136 static void 137 AcpiNsSortList ( 138 ACPI_OPERAND_OBJECT **Elements, 139 UINT32 Count, 140 UINT32 Index, 141 UINT8 SortDirection); 142 143 144 /* 145 * This table contains the names of the predefined methods for which we can 146 * perform more complex repairs. 147 * 148 * As necessary: 149 * 150 * _ALR: Sort the list ascending by AmbientIlluminance 151 * _CID: Strings: uppercase all, remove any leading asterisk 152 * _CST: Sort the list ascending by C state type 153 * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs 154 * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs 155 * _HID: Strings: uppercase all, remove any leading asterisk 156 * _PRT: Fix reversed SourceName and SourceIndex 157 * _PSS: Sort the list descending by Power 158 * _TSS: Sort the list descending by Power 159 * 160 * Names that must be packages, but cannot be sorted: 161 * 162 * _BCL: Values are tied to the Package index where they appear, and cannot 163 * be moved or sorted. These index values are used for _BQC and _BCM. 164 * However, we can fix the case where a buffer is returned, by converting 165 * it to a Package of integers. 166 */ 167 static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] = 168 { 169 {"_ALR", AcpiNsRepair_ALR}, 170 {"_CID", AcpiNsRepair_CID}, 171 {"_CST", AcpiNsRepair_CST}, 172 {"_FDE", AcpiNsRepair_FDE}, 173 {"_GTM", AcpiNsRepair_FDE}, /* _GTM has same repair as _FDE */ 174 {"_HID", AcpiNsRepair_HID}, 175 {"_PRT", AcpiNsRepair_PRT}, 176 {"_PSS", AcpiNsRepair_PSS}, 177 {"_TSS", AcpiNsRepair_TSS}, 178 {{0,0,0,0}, NULL} /* Table terminator */ 179 }; 180 181 182 #define ACPI_FDE_FIELD_COUNT 5 183 #define ACPI_FDE_BYTE_BUFFER_SIZE 5 184 #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (UINT32)) 185 186 187 /****************************************************************************** 188 * 189 * FUNCTION: AcpiNsComplexRepairs 190 * 191 * PARAMETERS: Info - Method execution information block 192 * Node - Namespace node for the method/object 193 * ValidateStatus - Original status of earlier validation 194 * ReturnObjectPtr - Pointer to the object returned from the 195 * evaluation of a method or object 196 * 197 * RETURN: Status. AE_OK if repair was successful. If name is not 198 * matched, ValidateStatus is returned. 199 * 200 * DESCRIPTION: Attempt to repair/convert a return object of a type that was 201 * not expected. 202 * 203 *****************************************************************************/ 204 205 ACPI_STATUS 206 AcpiNsComplexRepairs ( 207 ACPI_EVALUATE_INFO *Info, 208 ACPI_NAMESPACE_NODE *Node, 209 ACPI_STATUS ValidateStatus, 210 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 211 { 212 const ACPI_REPAIR_INFO *Predefined; 213 ACPI_STATUS Status; 214 215 216 /* Check if this name is in the list of repairable names */ 217 218 Predefined = AcpiNsMatchComplexRepair (Node); 219 if (!Predefined) 220 { 221 return (ValidateStatus); 222 } 223 224 Status = Predefined->RepairFunction (Info, ReturnObjectPtr); 225 return (Status); 226 } 227 228 229 /****************************************************************************** 230 * 231 * FUNCTION: AcpiNsMatchComplexRepair 232 * 233 * PARAMETERS: Node - Namespace node for the method/object 234 * 235 * RETURN: Pointer to entry in repair table. NULL indicates not found. 236 * 237 * DESCRIPTION: Check an object name against the repairable object list. 238 * 239 *****************************************************************************/ 240 241 static const ACPI_REPAIR_INFO * 242 AcpiNsMatchComplexRepair ( 243 ACPI_NAMESPACE_NODE *Node) 244 { 245 const ACPI_REPAIR_INFO *ThisName; 246 247 248 /* Search info table for a repairable predefined method/object name */ 249 250 ThisName = AcpiNsRepairableNames; 251 while (ThisName->RepairFunction) 252 { 253 if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name)) 254 { 255 return (ThisName); 256 } 257 258 ThisName++; 259 } 260 261 return (NULL); /* Not found */ 262 } 263 264 265 /****************************************************************************** 266 * 267 * FUNCTION: AcpiNsRepair_ALR 268 * 269 * PARAMETERS: Info - Method execution information block 270 * ReturnObjectPtr - Pointer to the object returned from the 271 * evaluation of a method or object 272 * 273 * RETURN: Status. AE_OK if object is OK or was repaired successfully 274 * 275 * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list 276 * ascending by the ambient illuminance values. 277 * 278 *****************************************************************************/ 279 280 static ACPI_STATUS 281 AcpiNsRepair_ALR ( 282 ACPI_EVALUATE_INFO *Info, 283 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 284 { 285 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 286 ACPI_STATUS Status; 287 288 289 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 2, 1, 290 ACPI_SORT_ASCENDING, "AmbientIlluminance"); 291 292 return (Status); 293 } 294 295 296 /****************************************************************************** 297 * 298 * FUNCTION: AcpiNsRepair_FDE 299 * 300 * PARAMETERS: Info - Method execution information block 301 * ReturnObjectPtr - Pointer to the object returned from the 302 * evaluation of a method or object 303 * 304 * RETURN: Status. AE_OK if object is OK or was repaired successfully 305 * 306 * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return 307 * value is a Buffer of 5 DWORDs. This function repairs a common 308 * problem where the return value is a Buffer of BYTEs, not 309 * DWORDs. 310 * 311 *****************************************************************************/ 312 313 static ACPI_STATUS 314 AcpiNsRepair_FDE ( 315 ACPI_EVALUATE_INFO *Info, 316 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 317 { 318 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 319 ACPI_OPERAND_OBJECT *BufferObject; 320 UINT8 *ByteBuffer; 321 UINT32 *DwordBuffer; 322 UINT32 i; 323 324 325 ACPI_FUNCTION_NAME (NsRepair_FDE); 326 327 328 switch (ReturnObject->Common.Type) 329 { 330 case ACPI_TYPE_BUFFER: 331 332 /* This is the expected type. Length should be (at least) 5 DWORDs */ 333 334 if (ReturnObject->Buffer.Length >= ACPI_FDE_DWORD_BUFFER_SIZE) 335 { 336 return (AE_OK); 337 } 338 339 /* We can only repair if we have exactly 5 BYTEs */ 340 341 if (ReturnObject->Buffer.Length != ACPI_FDE_BYTE_BUFFER_SIZE) 342 { 343 ACPI_WARN_PREDEFINED ((AE_INFO, 344 Info->FullPathname, Info->NodeFlags, 345 "Incorrect return buffer length %u, expected %u", 346 ReturnObject->Buffer.Length, ACPI_FDE_DWORD_BUFFER_SIZE)); 347 348 return (AE_AML_OPERAND_TYPE); 349 } 350 351 /* Create the new (larger) buffer object */ 352 353 BufferObject = AcpiUtCreateBufferObject ( 354 ACPI_FDE_DWORD_BUFFER_SIZE); 355 if (!BufferObject) 356 { 357 return (AE_NO_MEMORY); 358 } 359 360 /* Expand each byte to a DWORD */ 361 362 ByteBuffer = ReturnObject->Buffer.Pointer; 363 DwordBuffer = ACPI_CAST_PTR (UINT32, 364 BufferObject->Buffer.Pointer); 365 366 for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) 367 { 368 *DwordBuffer = (UINT32) *ByteBuffer; 369 DwordBuffer++; 370 ByteBuffer++; 371 } 372 373 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 374 "%s Expanded Byte Buffer to expected DWord Buffer\n", 375 Info->FullPathname)); 376 break; 377 378 default: 379 380 return (AE_AML_OPERAND_TYPE); 381 } 382 383 /* Delete the original return object, return the new buffer object */ 384 385 AcpiUtRemoveReference (ReturnObject); 386 *ReturnObjectPtr = BufferObject; 387 388 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 389 return (AE_OK); 390 } 391 392 393 /****************************************************************************** 394 * 395 * FUNCTION: AcpiNsRepair_CID 396 * 397 * PARAMETERS: Info - Method execution information block 398 * ReturnObjectPtr - Pointer to the object returned from the 399 * evaluation of a method or object 400 * 401 * RETURN: Status. AE_OK if object is OK or was repaired successfully 402 * 403 * DESCRIPTION: Repair for the _CID object. If a string, ensure that all 404 * letters are uppercase and that there is no leading asterisk. 405 * If a Package, ensure same for all string elements. 406 * 407 *****************************************************************************/ 408 409 static ACPI_STATUS 410 AcpiNsRepair_CID ( 411 ACPI_EVALUATE_INFO *Info, 412 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 413 { 414 ACPI_STATUS Status; 415 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 416 ACPI_OPERAND_OBJECT **ElementPtr; 417 ACPI_OPERAND_OBJECT *OriginalElement; 418 UINT16 OriginalRefCount; 419 UINT32 i; 420 421 422 /* Check for _CID as a simple string */ 423 424 if (ReturnObject->Common.Type == ACPI_TYPE_STRING) 425 { 426 Status = AcpiNsRepair_HID (Info, ReturnObjectPtr); 427 return (Status); 428 } 429 430 /* Exit if not a Package */ 431 432 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) 433 { 434 return (AE_OK); 435 } 436 437 /* Examine each element of the _CID package */ 438 439 ElementPtr = ReturnObject->Package.Elements; 440 for (i = 0; i < ReturnObject->Package.Count; i++) 441 { 442 OriginalElement = *ElementPtr; 443 OriginalRefCount = OriginalElement->Common.ReferenceCount; 444 445 Status = AcpiNsRepair_HID (Info, ElementPtr); 446 if (ACPI_FAILURE (Status)) 447 { 448 return (Status); 449 } 450 451 if (OriginalElement != *ElementPtr) 452 { 453 /* Update reference count of new object */ 454 455 (*ElementPtr)->Common.ReferenceCount = 456 OriginalRefCount; 457 } 458 459 ElementPtr++; 460 } 461 462 return (AE_OK); 463 } 464 465 466 /****************************************************************************** 467 * 468 * FUNCTION: AcpiNsRepair_CST 469 * 470 * PARAMETERS: Info - Method execution information block 471 * ReturnObjectPtr - Pointer to the object returned from the 472 * evaluation of a method or object 473 * 474 * RETURN: Status. AE_OK if object is OK or was repaired successfully 475 * 476 * DESCRIPTION: Repair for the _CST object: 477 * 1. Sort the list ascending by C state type 478 * 2. Ensure type cannot be zero 479 * 3. A subpackage count of zero means _CST is meaningless 480 * 4. Count must match the number of C state subpackages 481 * 482 *****************************************************************************/ 483 484 static ACPI_STATUS 485 AcpiNsRepair_CST ( 486 ACPI_EVALUATE_INFO *Info, 487 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 488 { 489 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 490 ACPI_OPERAND_OBJECT **OuterElements; 491 UINT32 OuterElementCount; 492 ACPI_OPERAND_OBJECT *ObjDesc; 493 ACPI_STATUS Status; 494 BOOLEAN Removing; 495 UINT32 i; 496 497 498 ACPI_FUNCTION_NAME (NsRepair_CST); 499 500 501 /* 502 * Check if the C-state type values are proportional. 503 */ 504 OuterElementCount = ReturnObject->Package.Count - 1; 505 i = 0; 506 while (i < OuterElementCount) 507 { 508 OuterElements = &ReturnObject->Package.Elements[i + 1]; 509 Removing = FALSE; 510 511 if ((*OuterElements)->Package.Count == 0) 512 { 513 ACPI_WARN_PREDEFINED ((AE_INFO, 514 Info->FullPathname, Info->NodeFlags, 515 "SubPackage[%u] - removing entry due to zero count", i)); 516 Removing = TRUE; 517 goto RemoveElement; 518 } 519 520 ObjDesc = (*OuterElements)->Package.Elements[1]; /* Index1 = Type */ 521 if ((UINT32) ObjDesc->Integer.Value == 0) 522 { 523 ACPI_WARN_PREDEFINED ((AE_INFO, 524 Info->FullPathname, Info->NodeFlags, 525 "SubPackage[%u] - removing entry due to invalid Type(0)", i)); 526 Removing = TRUE; 527 } 528 529 RemoveElement: 530 if (Removing) 531 { 532 AcpiNsRemoveElement (ReturnObject, i + 1); 533 OuterElementCount--; 534 } 535 else 536 { 537 i++; 538 } 539 } 540 541 /* Update top-level package count, Type "Integer" checked elsewhere */ 542 543 ObjDesc = ReturnObject->Package.Elements[0]; 544 ObjDesc->Integer.Value = OuterElementCount; 545 546 /* 547 * Entries (subpackages) in the _CST Package must be sorted by the 548 * C-state type, in ascending order. 549 */ 550 Status = AcpiNsCheckSortedList (Info, ReturnObject, 1, 4, 1, 551 ACPI_SORT_ASCENDING, "C-State Type"); 552 if (ACPI_FAILURE (Status)) 553 { 554 return (Status); 555 } 556 557 return (AE_OK); 558 } 559 560 561 /****************************************************************************** 562 * 563 * FUNCTION: AcpiNsRepair_HID 564 * 565 * PARAMETERS: Info - Method execution information block 566 * ReturnObjectPtr - Pointer to the object returned from the 567 * evaluation of a method or object 568 * 569 * RETURN: Status. AE_OK if object is OK or was repaired successfully 570 * 571 * DESCRIPTION: Repair for the _HID object. If a string, ensure that all 572 * letters are uppercase and that there is no leading asterisk. 573 * 574 *****************************************************************************/ 575 576 static ACPI_STATUS 577 AcpiNsRepair_HID ( 578 ACPI_EVALUATE_INFO *Info, 579 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 580 { 581 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 582 ACPI_OPERAND_OBJECT *NewString; 583 char *Source; 584 char *Dest; 585 586 587 ACPI_FUNCTION_NAME (NsRepair_HID); 588 589 590 /* We only care about string _HID objects (not integers) */ 591 592 if (ReturnObject->Common.Type != ACPI_TYPE_STRING) 593 { 594 return (AE_OK); 595 } 596 597 if (ReturnObject->String.Length == 0) 598 { 599 ACPI_WARN_PREDEFINED ((AE_INFO, 600 Info->FullPathname, Info->NodeFlags, 601 "Invalid zero-length _HID or _CID string")); 602 603 /* Return AE_OK anyway, let driver handle it */ 604 605 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 606 return (AE_OK); 607 } 608 609 /* It is simplest to always create a new string object */ 610 611 NewString = AcpiUtCreateStringObject (ReturnObject->String.Length); 612 if (!NewString) 613 { 614 return (AE_NO_MEMORY); 615 } 616 617 /* 618 * Remove a leading asterisk if present. For some unknown reason, there 619 * are many machines in the field that contains IDs like this. 620 * 621 * Examples: "*PNP0C03", "*ACPI0003" 622 */ 623 Source = ReturnObject->String.Pointer; 624 if (*Source == '*') 625 { 626 Source++; 627 NewString->String.Length--; 628 629 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 630 "%s: Removed invalid leading asterisk\n", Info->FullPathname)); 631 } 632 633 /* 634 * Copy and uppercase the string. From the ACPI 5.0 specification: 635 * 636 * A valid PNP ID must be of the form "AAA####" where A is an uppercase 637 * letter and # is a hex digit. A valid ACPI ID must be of the form 638 * "NNNN####" where N is an uppercase letter or decimal digit, and 639 * # is a hex digit. 640 */ 641 for (Dest = NewString->String.Pointer; *Source; Dest++, Source++) 642 { 643 *Dest = (char) toupper ((int) *Source); 644 } 645 646 AcpiUtRemoveReference (ReturnObject); 647 *ReturnObjectPtr = NewString; 648 return (AE_OK); 649 } 650 651 652 /****************************************************************************** 653 * 654 * FUNCTION: AcpiNsRepair_PRT 655 * 656 * PARAMETERS: Info - Method execution information block 657 * ReturnObjectPtr - Pointer to the object returned from the 658 * evaluation of a method or object 659 * 660 * RETURN: Status. AE_OK if object is OK or was repaired successfully 661 * 662 * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed 663 * SourceName and SourceIndex field, a common BIOS bug. 664 * 665 *****************************************************************************/ 666 667 static ACPI_STATUS 668 AcpiNsRepair_PRT ( 669 ACPI_EVALUATE_INFO *Info, 670 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 671 { 672 ACPI_OPERAND_OBJECT *PackageObject = *ReturnObjectPtr; 673 ACPI_OPERAND_OBJECT **TopObjectList; 674 ACPI_OPERAND_OBJECT **SubObjectList; 675 ACPI_OPERAND_OBJECT *ObjDesc; 676 ACPI_OPERAND_OBJECT *SubPackage; 677 UINT32 ElementCount; 678 UINT32 Index; 679 680 681 /* Each element in the _PRT package is a subpackage */ 682 683 TopObjectList = PackageObject->Package.Elements; 684 ElementCount = PackageObject->Package.Count; 685 686 /* Examine each subpackage */ 687 688 for (Index = 0; Index < ElementCount; Index++, TopObjectList++) 689 { 690 SubPackage = *TopObjectList; 691 SubObjectList = SubPackage->Package.Elements; 692 693 /* Check for minimum required element count */ 694 695 if (SubPackage->Package.Count < 4) 696 { 697 continue; 698 } 699 700 /* 701 * If the BIOS has erroneously reversed the _PRT SourceName (index 2) 702 * and the SourceIndex (index 3), fix it. _PRT is important enough to 703 * workaround this BIOS error. This also provides compatibility with 704 * other ACPI implementations. 705 */ 706 ObjDesc = SubObjectList[3]; 707 if (!ObjDesc || (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)) 708 { 709 SubObjectList[3] = SubObjectList[2]; 710 SubObjectList[2] = ObjDesc; 711 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 712 713 ACPI_WARN_PREDEFINED ((AE_INFO, 714 Info->FullPathname, Info->NodeFlags, 715 "PRT[%X]: Fixed reversed SourceName and SourceIndex", 716 Index)); 717 } 718 } 719 720 return (AE_OK); 721 } 722 723 724 /****************************************************************************** 725 * 726 * FUNCTION: AcpiNsRepair_PSS 727 * 728 * PARAMETERS: Info - Method execution information block 729 * ReturnObjectPtr - Pointer to the object returned from the 730 * evaluation of a method or object 731 * 732 * RETURN: Status. AE_OK if object is OK or was repaired successfully 733 * 734 * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list 735 * by the CPU frequencies. Check that the power dissipation values 736 * are all proportional to CPU frequency (i.e., sorting by 737 * frequency should be the same as sorting by power.) 738 * 739 *****************************************************************************/ 740 741 static ACPI_STATUS 742 AcpiNsRepair_PSS ( 743 ACPI_EVALUATE_INFO *Info, 744 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 745 { 746 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 747 ACPI_OPERAND_OBJECT **OuterElements; 748 UINT32 OuterElementCount; 749 ACPI_OPERAND_OBJECT **Elements; 750 ACPI_OPERAND_OBJECT *ObjDesc; 751 UINT32 PreviousValue; 752 ACPI_STATUS Status; 753 UINT32 i; 754 755 756 /* 757 * Entries (subpackages) in the _PSS Package must be sorted by power 758 * dissipation, in descending order. If it appears that the list is 759 * incorrectly sorted, sort it. We sort by CpuFrequency, since this 760 * should be proportional to the power. 761 */ 762 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 6, 0, 763 ACPI_SORT_DESCENDING, "CpuFrequency"); 764 if (ACPI_FAILURE (Status)) 765 { 766 return (Status); 767 } 768 769 /* 770 * We now know the list is correctly sorted by CPU frequency. Check if 771 * the power dissipation values are proportional. 772 */ 773 PreviousValue = ACPI_UINT32_MAX; 774 OuterElements = ReturnObject->Package.Elements; 775 OuterElementCount = ReturnObject->Package.Count; 776 777 for (i = 0; i < OuterElementCount; i++) 778 { 779 Elements = (*OuterElements)->Package.Elements; 780 ObjDesc = Elements[1]; /* Index1 = PowerDissipation */ 781 782 if ((UINT32) ObjDesc->Integer.Value > PreviousValue) 783 { 784 ACPI_WARN_PREDEFINED ((AE_INFO, 785 Info->FullPathname, Info->NodeFlags, 786 "SubPackage[%u,%u] - suspicious power dissipation values", 787 i-1, i)); 788 } 789 790 PreviousValue = (UINT32) ObjDesc->Integer.Value; 791 OuterElements++; 792 } 793 794 return (AE_OK); 795 } 796 797 798 /****************************************************************************** 799 * 800 * FUNCTION: AcpiNsRepair_TSS 801 * 802 * PARAMETERS: Info - Method execution information block 803 * ReturnObjectPtr - Pointer to the object returned from the 804 * evaluation of a method or object 805 * 806 * RETURN: Status. AE_OK if object is OK or was repaired successfully 807 * 808 * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list 809 * descending by the power dissipation values. 810 * 811 *****************************************************************************/ 812 813 static ACPI_STATUS 814 AcpiNsRepair_TSS ( 815 ACPI_EVALUATE_INFO *Info, 816 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 817 { 818 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 819 ACPI_STATUS Status; 820 ACPI_NAMESPACE_NODE *Node; 821 822 823 /* 824 * We can only sort the _TSS return package if there is no _PSS in the 825 * same scope. This is because if _PSS is present, the ACPI specification 826 * dictates that the _TSS Power Dissipation field is to be ignored, and 827 * therefore some BIOSs leave garbage values in the _TSS Power field(s). 828 * In this case, it is best to just return the _TSS package as-is. 829 * (May, 2011) 830 */ 831 Status = AcpiNsGetNode (Info->Node, "^_PSS", 832 ACPI_NS_NO_UPSEARCH, &Node); 833 if (ACPI_SUCCESS (Status)) 834 { 835 return (AE_OK); 836 } 837 838 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 5, 1, 839 ACPI_SORT_DESCENDING, "PowerDissipation"); 840 841 return (Status); 842 } 843 844 845 /****************************************************************************** 846 * 847 * FUNCTION: AcpiNsCheckSortedList 848 * 849 * PARAMETERS: Info - Method execution information block 850 * ReturnObject - Pointer to the top-level returned object 851 * StartIndex - Index of the first subpackage 852 * ExpectedCount - Minimum length of each subpackage 853 * SortIndex - Subpackage entry to sort on 854 * SortDirection - Ascending or descending 855 * SortKeyName - Name of the SortIndex field 856 * 857 * RETURN: Status. AE_OK if the list is valid and is sorted correctly or 858 * has been repaired by sorting the list. 859 * 860 * DESCRIPTION: Check if the package list is valid and sorted correctly by the 861 * SortIndex. If not, then sort the list. 862 * 863 *****************************************************************************/ 864 865 static ACPI_STATUS 866 AcpiNsCheckSortedList ( 867 ACPI_EVALUATE_INFO *Info, 868 ACPI_OPERAND_OBJECT *ReturnObject, 869 UINT32 StartIndex, 870 UINT32 ExpectedCount, 871 UINT32 SortIndex, 872 UINT8 SortDirection, 873 char *SortKeyName) 874 { 875 UINT32 OuterElementCount; 876 ACPI_OPERAND_OBJECT **OuterElements; 877 ACPI_OPERAND_OBJECT **Elements; 878 ACPI_OPERAND_OBJECT *ObjDesc; 879 UINT32 i; 880 UINT32 PreviousValue; 881 882 883 ACPI_FUNCTION_NAME (NsCheckSortedList); 884 885 886 /* The top-level object must be a package */ 887 888 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) 889 { 890 return (AE_AML_OPERAND_TYPE); 891 } 892 893 /* 894 * NOTE: assumes list of subpackages contains no NULL elements. 895 * Any NULL elements should have been removed by earlier call 896 * to AcpiNsRemoveNullElements. 897 */ 898 OuterElementCount = ReturnObject->Package.Count; 899 if (!OuterElementCount || StartIndex >= OuterElementCount) 900 { 901 return (AE_AML_PACKAGE_LIMIT); 902 } 903 904 OuterElements = &ReturnObject->Package.Elements[StartIndex]; 905 OuterElementCount -= StartIndex; 906 907 PreviousValue = 0; 908 if (SortDirection == ACPI_SORT_DESCENDING) 909 { 910 PreviousValue = ACPI_UINT32_MAX; 911 } 912 913 /* Examine each subpackage */ 914 915 for (i = 0; i < OuterElementCount; i++) 916 { 917 /* Each element of the top-level package must also be a package */ 918 919 if ((*OuterElements)->Common.Type != ACPI_TYPE_PACKAGE) 920 { 921 return (AE_AML_OPERAND_TYPE); 922 } 923 924 /* Each subpackage must have the minimum length */ 925 926 if ((*OuterElements)->Package.Count < ExpectedCount) 927 { 928 return (AE_AML_PACKAGE_LIMIT); 929 } 930 931 Elements = (*OuterElements)->Package.Elements; 932 ObjDesc = Elements[SortIndex]; 933 934 if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER) 935 { 936 return (AE_AML_OPERAND_TYPE); 937 } 938 939 /* 940 * The list must be sorted in the specified order. If we detect a 941 * discrepancy, sort the entire list. 942 */ 943 if (((SortDirection == ACPI_SORT_ASCENDING) && 944 (ObjDesc->Integer.Value < PreviousValue)) || 945 ((SortDirection == ACPI_SORT_DESCENDING) && 946 (ObjDesc->Integer.Value > PreviousValue))) 947 { 948 AcpiNsSortList (&ReturnObject->Package.Elements[StartIndex], 949 OuterElementCount, SortIndex, SortDirection); 950 951 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 952 953 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 954 "%s: Repaired unsorted list - now sorted by %s\n", 955 Info->FullPathname, SortKeyName)); 956 return (AE_OK); 957 } 958 959 PreviousValue = (UINT32) ObjDesc->Integer.Value; 960 OuterElements++; 961 } 962 963 return (AE_OK); 964 } 965 966 967 /****************************************************************************** 968 * 969 * FUNCTION: AcpiNsSortList 970 * 971 * PARAMETERS: Elements - Package object element list 972 * Count - Element count for above 973 * Index - Sort by which package element 974 * SortDirection - Ascending or Descending sort 975 * 976 * RETURN: None 977 * 978 * DESCRIPTION: Sort the objects that are in a package element list. 979 * 980 * NOTE: Assumes that all NULL elements have been removed from the package, 981 * and that all elements have been verified to be of type Integer. 982 * 983 *****************************************************************************/ 984 985 static void 986 AcpiNsSortList ( 987 ACPI_OPERAND_OBJECT **Elements, 988 UINT32 Count, 989 UINT32 Index, 990 UINT8 SortDirection) 991 { 992 ACPI_OPERAND_OBJECT *ObjDesc1; 993 ACPI_OPERAND_OBJECT *ObjDesc2; 994 ACPI_OPERAND_OBJECT *TempObj; 995 UINT32 i; 996 UINT32 j; 997 998 999 /* Simple bubble sort */ 1000 1001 for (i = 1; i < Count; i++) 1002 { 1003 for (j = (Count - 1); j >= i; j--) 1004 { 1005 ObjDesc1 = Elements[j-1]->Package.Elements[Index]; 1006 ObjDesc2 = Elements[j]->Package.Elements[Index]; 1007 1008 if (((SortDirection == ACPI_SORT_ASCENDING) && 1009 (ObjDesc1->Integer.Value > ObjDesc2->Integer.Value)) || 1010 1011 ((SortDirection == ACPI_SORT_DESCENDING) && 1012 (ObjDesc1->Integer.Value < ObjDesc2->Integer.Value))) 1013 { 1014 TempObj = Elements[j-1]; 1015 Elements[j-1] = Elements[j]; 1016 Elements[j] = TempObj; 1017 } 1018 } 1019 } 1020 } 1021 1022 1023 /****************************************************************************** 1024 * 1025 * FUNCTION: AcpiNsRemoveElement 1026 * 1027 * PARAMETERS: ObjDesc - Package object element list 1028 * Index - Index of element to remove 1029 * 1030 * RETURN: None 1031 * 1032 * DESCRIPTION: Remove the requested element of a package and delete it. 1033 * 1034 *****************************************************************************/ 1035 1036 static void 1037 AcpiNsRemoveElement ( 1038 ACPI_OPERAND_OBJECT *ObjDesc, 1039 UINT32 Index) 1040 { 1041 ACPI_OPERAND_OBJECT **Source; 1042 ACPI_OPERAND_OBJECT **Dest; 1043 UINT32 Count; 1044 UINT32 NewCount; 1045 UINT32 i; 1046 1047 1048 ACPI_FUNCTION_NAME (NsRemoveElement); 1049 1050 1051 Count = ObjDesc->Package.Count; 1052 NewCount = Count - 1; 1053 1054 Source = ObjDesc->Package.Elements; 1055 Dest = Source; 1056 1057 /* Examine all elements of the package object, remove matched index */ 1058 1059 for (i = 0; i < Count; i++) 1060 { 1061 if (i == Index) 1062 { 1063 AcpiUtRemoveReference (*Source); /* Remove one ref for being in pkg */ 1064 AcpiUtRemoveReference (*Source); 1065 } 1066 else 1067 { 1068 *Dest = *Source; 1069 Dest++; 1070 } 1071 1072 Source++; 1073 } 1074 1075 /* NULL terminate list and update the package count */ 1076 1077 *Dest = NULL; 1078 ObjDesc->Package.Count = NewCount; 1079 } 1080