1 /****************************************************************************** 2 * 3 * Module Name: nsrepair2 - Repair for objects returned by specific 4 * predefined methods 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2016, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #include "acpi.h" 118 #include "accommon.h" 119 #include "acnamesp.h" 120 121 #define _COMPONENT ACPI_NAMESPACE 122 ACPI_MODULE_NAME ("nsrepair2") 123 124 125 /* 126 * Information structure and handler for ACPI predefined names that can 127 * be repaired on a per-name basis. 128 */ 129 typedef 130 ACPI_STATUS (*ACPI_REPAIR_FUNCTION) ( 131 ACPI_EVALUATE_INFO *Info, 132 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 133 134 typedef struct acpi_repair_info 135 { 136 char Name[ACPI_NAME_SIZE]; 137 ACPI_REPAIR_FUNCTION RepairFunction; 138 139 } ACPI_REPAIR_INFO; 140 141 142 /* Local prototypes */ 143 144 static const ACPI_REPAIR_INFO * 145 AcpiNsMatchComplexRepair ( 146 ACPI_NAMESPACE_NODE *Node); 147 148 static ACPI_STATUS 149 AcpiNsRepair_ALR ( 150 ACPI_EVALUATE_INFO *Info, 151 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 152 153 static ACPI_STATUS 154 AcpiNsRepair_CID ( 155 ACPI_EVALUATE_INFO *Info, 156 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 157 158 static ACPI_STATUS 159 AcpiNsRepair_CST ( 160 ACPI_EVALUATE_INFO *Info, 161 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 162 163 static ACPI_STATUS 164 AcpiNsRepair_FDE ( 165 ACPI_EVALUATE_INFO *Info, 166 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 167 168 static ACPI_STATUS 169 AcpiNsRepair_HID ( 170 ACPI_EVALUATE_INFO *Info, 171 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 172 173 static ACPI_STATUS 174 AcpiNsRepair_PRT ( 175 ACPI_EVALUATE_INFO *Info, 176 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 177 178 static ACPI_STATUS 179 AcpiNsRepair_PSS ( 180 ACPI_EVALUATE_INFO *Info, 181 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 182 183 static ACPI_STATUS 184 AcpiNsRepair_TSS ( 185 ACPI_EVALUATE_INFO *Info, 186 ACPI_OPERAND_OBJECT **ReturnObjectPtr); 187 188 static ACPI_STATUS 189 AcpiNsCheckSortedList ( 190 ACPI_EVALUATE_INFO *Info, 191 ACPI_OPERAND_OBJECT *ReturnObject, 192 UINT32 StartIndex, 193 UINT32 ExpectedCount, 194 UINT32 SortIndex, 195 UINT8 SortDirection, 196 char *SortKeyName); 197 198 /* Values for SortDirection above */ 199 200 #define ACPI_SORT_ASCENDING 0 201 #define ACPI_SORT_DESCENDING 1 202 203 static void 204 AcpiNsRemoveElement ( 205 ACPI_OPERAND_OBJECT *ObjDesc, 206 UINT32 Index); 207 208 static void 209 AcpiNsSortList ( 210 ACPI_OPERAND_OBJECT **Elements, 211 UINT32 Count, 212 UINT32 Index, 213 UINT8 SortDirection); 214 215 216 /* 217 * This table contains the names of the predefined methods for which we can 218 * perform more complex repairs. 219 * 220 * As necessary: 221 * 222 * _ALR: Sort the list ascending by AmbientIlluminance 223 * _CID: Strings: uppercase all, remove any leading asterisk 224 * _CST: Sort the list ascending by C state type 225 * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs 226 * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs 227 * _HID: Strings: uppercase all, remove any leading asterisk 228 * _PRT: Fix reversed SourceName and SourceIndex 229 * _PSS: Sort the list descending by Power 230 * _TSS: Sort the list descending by Power 231 * 232 * Names that must be packages, but cannot be sorted: 233 * 234 * _BCL: Values are tied to the Package index where they appear, and cannot 235 * be moved or sorted. These index values are used for _BQC and _BCM. 236 * However, we can fix the case where a buffer is returned, by converting 237 * it to a Package of integers. 238 */ 239 static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] = 240 { 241 {"_ALR", AcpiNsRepair_ALR}, 242 {"_CID", AcpiNsRepair_CID}, 243 {"_CST", AcpiNsRepair_CST}, 244 {"_FDE", AcpiNsRepair_FDE}, 245 {"_GTM", AcpiNsRepair_FDE}, /* _GTM has same repair as _FDE */ 246 {"_HID", AcpiNsRepair_HID}, 247 {"_PRT", AcpiNsRepair_PRT}, 248 {"_PSS", AcpiNsRepair_PSS}, 249 {"_TSS", AcpiNsRepair_TSS}, 250 {{0,0,0,0}, NULL} /* Table terminator */ 251 }; 252 253 254 #define ACPI_FDE_FIELD_COUNT 5 255 #define ACPI_FDE_BYTE_BUFFER_SIZE 5 256 #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (UINT32)) 257 258 259 /****************************************************************************** 260 * 261 * FUNCTION: AcpiNsComplexRepairs 262 * 263 * PARAMETERS: Info - Method execution information block 264 * Node - Namespace node for the method/object 265 * ValidateStatus - Original status of earlier validation 266 * ReturnObjectPtr - Pointer to the object returned from the 267 * evaluation of a method or object 268 * 269 * RETURN: Status. AE_OK if repair was successful. If name is not 270 * matched, ValidateStatus is returned. 271 * 272 * DESCRIPTION: Attempt to repair/convert a return object of a type that was 273 * not expected. 274 * 275 *****************************************************************************/ 276 277 ACPI_STATUS 278 AcpiNsComplexRepairs ( 279 ACPI_EVALUATE_INFO *Info, 280 ACPI_NAMESPACE_NODE *Node, 281 ACPI_STATUS ValidateStatus, 282 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 283 { 284 const ACPI_REPAIR_INFO *Predefined; 285 ACPI_STATUS Status; 286 287 288 /* Check if this name is in the list of repairable names */ 289 290 Predefined = AcpiNsMatchComplexRepair (Node); 291 if (!Predefined) 292 { 293 return (ValidateStatus); 294 } 295 296 Status = Predefined->RepairFunction (Info, ReturnObjectPtr); 297 return (Status); 298 } 299 300 301 /****************************************************************************** 302 * 303 * FUNCTION: AcpiNsMatchComplexRepair 304 * 305 * PARAMETERS: Node - Namespace node for the method/object 306 * 307 * RETURN: Pointer to entry in repair table. NULL indicates not found. 308 * 309 * DESCRIPTION: Check an object name against the repairable object list. 310 * 311 *****************************************************************************/ 312 313 static const ACPI_REPAIR_INFO * 314 AcpiNsMatchComplexRepair ( 315 ACPI_NAMESPACE_NODE *Node) 316 { 317 const ACPI_REPAIR_INFO *ThisName; 318 319 320 /* Search info table for a repairable predefined method/object name */ 321 322 ThisName = AcpiNsRepairableNames; 323 while (ThisName->RepairFunction) 324 { 325 if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name)) 326 { 327 return (ThisName); 328 } 329 330 ThisName++; 331 } 332 333 return (NULL); /* Not found */ 334 } 335 336 337 /****************************************************************************** 338 * 339 * FUNCTION: AcpiNsRepair_ALR 340 * 341 * PARAMETERS: Info - Method execution information block 342 * ReturnObjectPtr - Pointer to the object returned from the 343 * evaluation of a method or object 344 * 345 * RETURN: Status. AE_OK if object is OK or was repaired successfully 346 * 347 * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list 348 * ascending by the ambient illuminance values. 349 * 350 *****************************************************************************/ 351 352 static ACPI_STATUS 353 AcpiNsRepair_ALR ( 354 ACPI_EVALUATE_INFO *Info, 355 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 356 { 357 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 358 ACPI_STATUS Status; 359 360 361 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 2, 1, 362 ACPI_SORT_ASCENDING, "AmbientIlluminance"); 363 364 return (Status); 365 } 366 367 368 /****************************************************************************** 369 * 370 * FUNCTION: AcpiNsRepair_FDE 371 * 372 * PARAMETERS: Info - Method execution information block 373 * ReturnObjectPtr - Pointer to the object returned from the 374 * evaluation of a method or object 375 * 376 * RETURN: Status. AE_OK if object is OK or was repaired successfully 377 * 378 * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return 379 * value is a Buffer of 5 DWORDs. This function repairs a common 380 * problem where the return value is a Buffer of BYTEs, not 381 * DWORDs. 382 * 383 *****************************************************************************/ 384 385 static ACPI_STATUS 386 AcpiNsRepair_FDE ( 387 ACPI_EVALUATE_INFO *Info, 388 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 389 { 390 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 391 ACPI_OPERAND_OBJECT *BufferObject; 392 UINT8 *ByteBuffer; 393 UINT32 *DwordBuffer; 394 UINT32 i; 395 396 397 ACPI_FUNCTION_NAME (NsRepair_FDE); 398 399 400 switch (ReturnObject->Common.Type) 401 { 402 case ACPI_TYPE_BUFFER: 403 404 /* This is the expected type. Length should be (at least) 5 DWORDs */ 405 406 if (ReturnObject->Buffer.Length >= ACPI_FDE_DWORD_BUFFER_SIZE) 407 { 408 return (AE_OK); 409 } 410 411 /* We can only repair if we have exactly 5 BYTEs */ 412 413 if (ReturnObject->Buffer.Length != ACPI_FDE_BYTE_BUFFER_SIZE) 414 { 415 ACPI_WARN_PREDEFINED ((AE_INFO, 416 Info->FullPathname, Info->NodeFlags, 417 "Incorrect return buffer length %u, expected %u", 418 ReturnObject->Buffer.Length, ACPI_FDE_DWORD_BUFFER_SIZE)); 419 420 return (AE_AML_OPERAND_TYPE); 421 } 422 423 /* Create the new (larger) buffer object */ 424 425 BufferObject = AcpiUtCreateBufferObject ( 426 ACPI_FDE_DWORD_BUFFER_SIZE); 427 if (!BufferObject) 428 { 429 return (AE_NO_MEMORY); 430 } 431 432 /* Expand each byte to a DWORD */ 433 434 ByteBuffer = ReturnObject->Buffer.Pointer; 435 DwordBuffer = ACPI_CAST_PTR (UINT32, 436 BufferObject->Buffer.Pointer); 437 438 for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) 439 { 440 *DwordBuffer = (UINT32) *ByteBuffer; 441 DwordBuffer++; 442 ByteBuffer++; 443 } 444 445 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 446 "%s Expanded Byte Buffer to expected DWord Buffer\n", 447 Info->FullPathname)); 448 break; 449 450 default: 451 452 return (AE_AML_OPERAND_TYPE); 453 } 454 455 /* Delete the original return object, return the new buffer object */ 456 457 AcpiUtRemoveReference (ReturnObject); 458 *ReturnObjectPtr = BufferObject; 459 460 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 461 return (AE_OK); 462 } 463 464 465 /****************************************************************************** 466 * 467 * FUNCTION: AcpiNsRepair_CID 468 * 469 * PARAMETERS: Info - Method execution information block 470 * ReturnObjectPtr - Pointer to the object returned from the 471 * evaluation of a method or object 472 * 473 * RETURN: Status. AE_OK if object is OK or was repaired successfully 474 * 475 * DESCRIPTION: Repair for the _CID object. If a string, ensure that all 476 * letters are uppercase and that there is no leading asterisk. 477 * If a Package, ensure same for all string elements. 478 * 479 *****************************************************************************/ 480 481 static ACPI_STATUS 482 AcpiNsRepair_CID ( 483 ACPI_EVALUATE_INFO *Info, 484 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 485 { 486 ACPI_STATUS Status; 487 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 488 ACPI_OPERAND_OBJECT **ElementPtr; 489 ACPI_OPERAND_OBJECT *OriginalElement; 490 UINT16 OriginalRefCount; 491 UINT32 i; 492 493 494 /* Check for _CID as a simple string */ 495 496 if (ReturnObject->Common.Type == ACPI_TYPE_STRING) 497 { 498 Status = AcpiNsRepair_HID (Info, ReturnObjectPtr); 499 return (Status); 500 } 501 502 /* Exit if not a Package */ 503 504 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) 505 { 506 return (AE_OK); 507 } 508 509 /* Examine each element of the _CID package */ 510 511 ElementPtr = ReturnObject->Package.Elements; 512 for (i = 0; i < ReturnObject->Package.Count; i++) 513 { 514 OriginalElement = *ElementPtr; 515 OriginalRefCount = OriginalElement->Common.ReferenceCount; 516 517 Status = AcpiNsRepair_HID (Info, ElementPtr); 518 if (ACPI_FAILURE (Status)) 519 { 520 return (Status); 521 } 522 523 /* Take care with reference counts */ 524 525 if (OriginalElement != *ElementPtr) 526 { 527 /* Element was replaced */ 528 529 (*ElementPtr)->Common.ReferenceCount = 530 OriginalRefCount; 531 532 AcpiUtRemoveReference (OriginalElement); 533 } 534 535 ElementPtr++; 536 } 537 538 return (AE_OK); 539 } 540 541 542 /****************************************************************************** 543 * 544 * FUNCTION: AcpiNsRepair_CST 545 * 546 * PARAMETERS: Info - Method execution information block 547 * ReturnObjectPtr - Pointer to the object returned from the 548 * evaluation of a method or object 549 * 550 * RETURN: Status. AE_OK if object is OK or was repaired successfully 551 * 552 * DESCRIPTION: Repair for the _CST object: 553 * 1. Sort the list ascending by C state type 554 * 2. Ensure type cannot be zero 555 * 3. A subpackage count of zero means _CST is meaningless 556 * 4. Count must match the number of C state subpackages 557 * 558 *****************************************************************************/ 559 560 static ACPI_STATUS 561 AcpiNsRepair_CST ( 562 ACPI_EVALUATE_INFO *Info, 563 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 564 { 565 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 566 ACPI_OPERAND_OBJECT **OuterElements; 567 UINT32 OuterElementCount; 568 ACPI_OPERAND_OBJECT *ObjDesc; 569 ACPI_STATUS Status; 570 BOOLEAN Removing; 571 UINT32 i; 572 573 574 ACPI_FUNCTION_NAME (NsRepair_CST); 575 576 577 /* 578 * Check if the C-state type values are proportional. 579 */ 580 OuterElementCount = ReturnObject->Package.Count - 1; 581 i = 0; 582 while (i < OuterElementCount) 583 { 584 OuterElements = &ReturnObject->Package.Elements[i + 1]; 585 Removing = FALSE; 586 587 if ((*OuterElements)->Package.Count == 0) 588 { 589 ACPI_WARN_PREDEFINED ((AE_INFO, 590 Info->FullPathname, Info->NodeFlags, 591 "SubPackage[%u] - removing entry due to zero count", i)); 592 Removing = TRUE; 593 goto RemoveElement; 594 } 595 596 ObjDesc = (*OuterElements)->Package.Elements[1]; /* Index1 = Type */ 597 if ((UINT32) ObjDesc->Integer.Value == 0) 598 { 599 ACPI_WARN_PREDEFINED ((AE_INFO, 600 Info->FullPathname, Info->NodeFlags, 601 "SubPackage[%u] - removing entry due to invalid Type(0)", i)); 602 Removing = TRUE; 603 } 604 605 RemoveElement: 606 if (Removing) 607 { 608 AcpiNsRemoveElement (ReturnObject, i + 1); 609 OuterElementCount--; 610 } 611 else 612 { 613 i++; 614 } 615 } 616 617 /* Update top-level package count, Type "Integer" checked elsewhere */ 618 619 ObjDesc = ReturnObject->Package.Elements[0]; 620 ObjDesc->Integer.Value = OuterElementCount; 621 622 /* 623 * Entries (subpackages) in the _CST Package must be sorted by the 624 * C-state type, in ascending order. 625 */ 626 Status = AcpiNsCheckSortedList (Info, ReturnObject, 1, 4, 1, 627 ACPI_SORT_ASCENDING, "C-State Type"); 628 if (ACPI_FAILURE (Status)) 629 { 630 return (Status); 631 } 632 633 return (AE_OK); 634 } 635 636 637 /****************************************************************************** 638 * 639 * FUNCTION: AcpiNsRepair_HID 640 * 641 * PARAMETERS: Info - Method execution information block 642 * ReturnObjectPtr - Pointer to the object returned from the 643 * evaluation of a method or object 644 * 645 * RETURN: Status. AE_OK if object is OK or was repaired successfully 646 * 647 * DESCRIPTION: Repair for the _HID object. If a string, ensure that all 648 * letters are uppercase and that there is no leading asterisk. 649 * 650 *****************************************************************************/ 651 652 static ACPI_STATUS 653 AcpiNsRepair_HID ( 654 ACPI_EVALUATE_INFO *Info, 655 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 656 { 657 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 658 ACPI_OPERAND_OBJECT *NewString; 659 char *Source; 660 char *Dest; 661 662 663 ACPI_FUNCTION_NAME (NsRepair_HID); 664 665 666 /* We only care about string _HID objects (not integers) */ 667 668 if (ReturnObject->Common.Type != ACPI_TYPE_STRING) 669 { 670 return (AE_OK); 671 } 672 673 if (ReturnObject->String.Length == 0) 674 { 675 ACPI_WARN_PREDEFINED ((AE_INFO, 676 Info->FullPathname, Info->NodeFlags, 677 "Invalid zero-length _HID or _CID string")); 678 679 /* Return AE_OK anyway, let driver handle it */ 680 681 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 682 return (AE_OK); 683 } 684 685 /* It is simplest to always create a new string object */ 686 687 NewString = AcpiUtCreateStringObject (ReturnObject->String.Length); 688 if (!NewString) 689 { 690 return (AE_NO_MEMORY); 691 } 692 693 /* 694 * Remove a leading asterisk if present. For some unknown reason, there 695 * are many machines in the field that contains IDs like this. 696 * 697 * Examples: "*PNP0C03", "*ACPI0003" 698 */ 699 Source = ReturnObject->String.Pointer; 700 if (*Source == '*') 701 { 702 Source++; 703 NewString->String.Length--; 704 705 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 706 "%s: Removed invalid leading asterisk\n", Info->FullPathname)); 707 } 708 709 /* 710 * Copy and uppercase the string. From the ACPI 5.0 specification: 711 * 712 * A valid PNP ID must be of the form "AAA####" where A is an uppercase 713 * letter and # is a hex digit. A valid ACPI ID must be of the form 714 * "NNNN####" where N is an uppercase letter or decimal digit, and 715 * # is a hex digit. 716 */ 717 for (Dest = NewString->String.Pointer; *Source; Dest++, Source++) 718 { 719 *Dest = (char) toupper ((int) *Source); 720 } 721 722 AcpiUtRemoveReference (ReturnObject); 723 *ReturnObjectPtr = NewString; 724 return (AE_OK); 725 } 726 727 728 /****************************************************************************** 729 * 730 * FUNCTION: AcpiNsRepair_PRT 731 * 732 * PARAMETERS: Info - Method execution information block 733 * ReturnObjectPtr - Pointer to the object returned from the 734 * evaluation of a method or object 735 * 736 * RETURN: Status. AE_OK if object is OK or was repaired successfully 737 * 738 * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed 739 * SourceName and SourceIndex field, a common BIOS bug. 740 * 741 *****************************************************************************/ 742 743 static ACPI_STATUS 744 AcpiNsRepair_PRT ( 745 ACPI_EVALUATE_INFO *Info, 746 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 747 { 748 ACPI_OPERAND_OBJECT *PackageObject = *ReturnObjectPtr; 749 ACPI_OPERAND_OBJECT **TopObjectList; 750 ACPI_OPERAND_OBJECT **SubObjectList; 751 ACPI_OPERAND_OBJECT *ObjDesc; 752 ACPI_OPERAND_OBJECT *SubPackage; 753 UINT32 ElementCount; 754 UINT32 Index; 755 756 757 /* Each element in the _PRT package is a subpackage */ 758 759 TopObjectList = PackageObject->Package.Elements; 760 ElementCount = PackageObject->Package.Count; 761 762 /* Examine each subpackage */ 763 764 for (Index = 0; Index < ElementCount; Index++, TopObjectList++) 765 { 766 SubPackage = *TopObjectList; 767 SubObjectList = SubPackage->Package.Elements; 768 769 /* Check for minimum required element count */ 770 771 if (SubPackage->Package.Count < 4) 772 { 773 continue; 774 } 775 776 /* 777 * If the BIOS has erroneously reversed the _PRT SourceName (index 2) 778 * and the SourceIndex (index 3), fix it. _PRT is important enough to 779 * workaround this BIOS error. This also provides compatibility with 780 * other ACPI implementations. 781 */ 782 ObjDesc = SubObjectList[3]; 783 if (!ObjDesc || (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)) 784 { 785 SubObjectList[3] = SubObjectList[2]; 786 SubObjectList[2] = ObjDesc; 787 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 788 789 ACPI_WARN_PREDEFINED ((AE_INFO, 790 Info->FullPathname, Info->NodeFlags, 791 "PRT[%X]: Fixed reversed SourceName and SourceIndex", 792 Index)); 793 } 794 } 795 796 return (AE_OK); 797 } 798 799 800 /****************************************************************************** 801 * 802 * FUNCTION: AcpiNsRepair_PSS 803 * 804 * PARAMETERS: Info - Method execution information block 805 * ReturnObjectPtr - Pointer to the object returned from the 806 * evaluation of a method or object 807 * 808 * RETURN: Status. AE_OK if object is OK or was repaired successfully 809 * 810 * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list 811 * by the CPU frequencies. Check that the power dissipation values 812 * are all proportional to CPU frequency (i.e., sorting by 813 * frequency should be the same as sorting by power.) 814 * 815 *****************************************************************************/ 816 817 static ACPI_STATUS 818 AcpiNsRepair_PSS ( 819 ACPI_EVALUATE_INFO *Info, 820 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 821 { 822 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 823 ACPI_OPERAND_OBJECT **OuterElements; 824 UINT32 OuterElementCount; 825 ACPI_OPERAND_OBJECT **Elements; 826 ACPI_OPERAND_OBJECT *ObjDesc; 827 UINT32 PreviousValue; 828 ACPI_STATUS Status; 829 UINT32 i; 830 831 832 /* 833 * Entries (subpackages) in the _PSS Package must be sorted by power 834 * dissipation, in descending order. If it appears that the list is 835 * incorrectly sorted, sort it. We sort by CpuFrequency, since this 836 * should be proportional to the power. 837 */ 838 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 6, 0, 839 ACPI_SORT_DESCENDING, "CpuFrequency"); 840 if (ACPI_FAILURE (Status)) 841 { 842 return (Status); 843 } 844 845 /* 846 * We now know the list is correctly sorted by CPU frequency. Check if 847 * the power dissipation values are proportional. 848 */ 849 PreviousValue = ACPI_UINT32_MAX; 850 OuterElements = ReturnObject->Package.Elements; 851 OuterElementCount = ReturnObject->Package.Count; 852 853 for (i = 0; i < OuterElementCount; i++) 854 { 855 Elements = (*OuterElements)->Package.Elements; 856 ObjDesc = Elements[1]; /* Index1 = PowerDissipation */ 857 858 if ((UINT32) ObjDesc->Integer.Value > PreviousValue) 859 { 860 ACPI_WARN_PREDEFINED ((AE_INFO, 861 Info->FullPathname, Info->NodeFlags, 862 "SubPackage[%u,%u] - suspicious power dissipation values", 863 i-1, i)); 864 } 865 866 PreviousValue = (UINT32) ObjDesc->Integer.Value; 867 OuterElements++; 868 } 869 870 return (AE_OK); 871 } 872 873 874 /****************************************************************************** 875 * 876 * FUNCTION: AcpiNsRepair_TSS 877 * 878 * PARAMETERS: Info - Method execution information block 879 * ReturnObjectPtr - Pointer to the object returned from the 880 * evaluation of a method or object 881 * 882 * RETURN: Status. AE_OK if object is OK or was repaired successfully 883 * 884 * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list 885 * descending by the power dissipation values. 886 * 887 *****************************************************************************/ 888 889 static ACPI_STATUS 890 AcpiNsRepair_TSS ( 891 ACPI_EVALUATE_INFO *Info, 892 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 893 { 894 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 895 ACPI_STATUS Status; 896 ACPI_NAMESPACE_NODE *Node; 897 898 899 /* 900 * We can only sort the _TSS return package if there is no _PSS in the 901 * same scope. This is because if _PSS is present, the ACPI specification 902 * dictates that the _TSS Power Dissipation field is to be ignored, and 903 * therefore some BIOSs leave garbage values in the _TSS Power field(s). 904 * In this case, it is best to just return the _TSS package as-is. 905 * (May, 2011) 906 */ 907 Status = AcpiNsGetNode (Info->Node, "^_PSS", 908 ACPI_NS_NO_UPSEARCH, &Node); 909 if (ACPI_SUCCESS (Status)) 910 { 911 return (AE_OK); 912 } 913 914 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 5, 1, 915 ACPI_SORT_DESCENDING, "PowerDissipation"); 916 917 return (Status); 918 } 919 920 921 /****************************************************************************** 922 * 923 * FUNCTION: AcpiNsCheckSortedList 924 * 925 * PARAMETERS: Info - Method execution information block 926 * ReturnObject - Pointer to the top-level returned object 927 * StartIndex - Index of the first subpackage 928 * ExpectedCount - Minimum length of each subpackage 929 * SortIndex - Subpackage entry to sort on 930 * SortDirection - Ascending or descending 931 * SortKeyName - Name of the SortIndex field 932 * 933 * RETURN: Status. AE_OK if the list is valid and is sorted correctly or 934 * has been repaired by sorting the list. 935 * 936 * DESCRIPTION: Check if the package list is valid and sorted correctly by the 937 * SortIndex. If not, then sort the list. 938 * 939 *****************************************************************************/ 940 941 static ACPI_STATUS 942 AcpiNsCheckSortedList ( 943 ACPI_EVALUATE_INFO *Info, 944 ACPI_OPERAND_OBJECT *ReturnObject, 945 UINT32 StartIndex, 946 UINT32 ExpectedCount, 947 UINT32 SortIndex, 948 UINT8 SortDirection, 949 char *SortKeyName) 950 { 951 UINT32 OuterElementCount; 952 ACPI_OPERAND_OBJECT **OuterElements; 953 ACPI_OPERAND_OBJECT **Elements; 954 ACPI_OPERAND_OBJECT *ObjDesc; 955 UINT32 i; 956 UINT32 PreviousValue; 957 958 959 ACPI_FUNCTION_NAME (NsCheckSortedList); 960 961 962 /* The top-level object must be a package */ 963 964 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) 965 { 966 return (AE_AML_OPERAND_TYPE); 967 } 968 969 /* 970 * NOTE: assumes list of subpackages contains no NULL elements. 971 * Any NULL elements should have been removed by earlier call 972 * to AcpiNsRemoveNullElements. 973 */ 974 OuterElementCount = ReturnObject->Package.Count; 975 if (!OuterElementCount || StartIndex >= OuterElementCount) 976 { 977 return (AE_AML_PACKAGE_LIMIT); 978 } 979 980 OuterElements = &ReturnObject->Package.Elements[StartIndex]; 981 OuterElementCount -= StartIndex; 982 983 PreviousValue = 0; 984 if (SortDirection == ACPI_SORT_DESCENDING) 985 { 986 PreviousValue = ACPI_UINT32_MAX; 987 } 988 989 /* Examine each subpackage */ 990 991 for (i = 0; i < OuterElementCount; i++) 992 { 993 /* Each element of the top-level package must also be a package */ 994 995 if ((*OuterElements)->Common.Type != ACPI_TYPE_PACKAGE) 996 { 997 return (AE_AML_OPERAND_TYPE); 998 } 999 1000 /* Each subpackage must have the minimum length */ 1001 1002 if ((*OuterElements)->Package.Count < ExpectedCount) 1003 { 1004 return (AE_AML_PACKAGE_LIMIT); 1005 } 1006 1007 Elements = (*OuterElements)->Package.Elements; 1008 ObjDesc = Elements[SortIndex]; 1009 1010 if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER) 1011 { 1012 return (AE_AML_OPERAND_TYPE); 1013 } 1014 1015 /* 1016 * The list must be sorted in the specified order. If we detect a 1017 * discrepancy, sort the entire list. 1018 */ 1019 if (((SortDirection == ACPI_SORT_ASCENDING) && 1020 (ObjDesc->Integer.Value < PreviousValue)) || 1021 ((SortDirection == ACPI_SORT_DESCENDING) && 1022 (ObjDesc->Integer.Value > PreviousValue))) 1023 { 1024 AcpiNsSortList (&ReturnObject->Package.Elements[StartIndex], 1025 OuterElementCount, SortIndex, SortDirection); 1026 1027 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 1028 1029 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 1030 "%s: Repaired unsorted list - now sorted by %s\n", 1031 Info->FullPathname, SortKeyName)); 1032 return (AE_OK); 1033 } 1034 1035 PreviousValue = (UINT32) ObjDesc->Integer.Value; 1036 OuterElements++; 1037 } 1038 1039 return (AE_OK); 1040 } 1041 1042 1043 /****************************************************************************** 1044 * 1045 * FUNCTION: AcpiNsSortList 1046 * 1047 * PARAMETERS: Elements - Package object element list 1048 * Count - Element count for above 1049 * Index - Sort by which package element 1050 * SortDirection - Ascending or Descending sort 1051 * 1052 * RETURN: None 1053 * 1054 * DESCRIPTION: Sort the objects that are in a package element list. 1055 * 1056 * NOTE: Assumes that all NULL elements have been removed from the package, 1057 * and that all elements have been verified to be of type Integer. 1058 * 1059 *****************************************************************************/ 1060 1061 static void 1062 AcpiNsSortList ( 1063 ACPI_OPERAND_OBJECT **Elements, 1064 UINT32 Count, 1065 UINT32 Index, 1066 UINT8 SortDirection) 1067 { 1068 ACPI_OPERAND_OBJECT *ObjDesc1; 1069 ACPI_OPERAND_OBJECT *ObjDesc2; 1070 ACPI_OPERAND_OBJECT *TempObj; 1071 UINT32 i; 1072 UINT32 j; 1073 1074 1075 /* Simple bubble sort */ 1076 1077 for (i = 1; i < Count; i++) 1078 { 1079 for (j = (Count - 1); j >= i; j--) 1080 { 1081 ObjDesc1 = Elements[j-1]->Package.Elements[Index]; 1082 ObjDesc2 = Elements[j]->Package.Elements[Index]; 1083 1084 if (((SortDirection == ACPI_SORT_ASCENDING) && 1085 (ObjDesc1->Integer.Value > ObjDesc2->Integer.Value)) || 1086 1087 ((SortDirection == ACPI_SORT_DESCENDING) && 1088 (ObjDesc1->Integer.Value < ObjDesc2->Integer.Value))) 1089 { 1090 TempObj = Elements[j-1]; 1091 Elements[j-1] = Elements[j]; 1092 Elements[j] = TempObj; 1093 } 1094 } 1095 } 1096 } 1097 1098 1099 /****************************************************************************** 1100 * 1101 * FUNCTION: AcpiNsRemoveElement 1102 * 1103 * PARAMETERS: ObjDesc - Package object element list 1104 * Index - Index of element to remove 1105 * 1106 * RETURN: None 1107 * 1108 * DESCRIPTION: Remove the requested element of a package and delete it. 1109 * 1110 *****************************************************************************/ 1111 1112 static void 1113 AcpiNsRemoveElement ( 1114 ACPI_OPERAND_OBJECT *ObjDesc, 1115 UINT32 Index) 1116 { 1117 ACPI_OPERAND_OBJECT **Source; 1118 ACPI_OPERAND_OBJECT **Dest; 1119 UINT32 Count; 1120 UINT32 NewCount; 1121 UINT32 i; 1122 1123 1124 ACPI_FUNCTION_NAME (NsRemoveElement); 1125 1126 1127 Count = ObjDesc->Package.Count; 1128 NewCount = Count - 1; 1129 1130 Source = ObjDesc->Package.Elements; 1131 Dest = Source; 1132 1133 /* Examine all elements of the package object, remove matched index */ 1134 1135 for (i = 0; i < Count; i++) 1136 { 1137 if (i == Index) 1138 { 1139 AcpiUtRemoveReference (*Source); /* Remove one ref for being in pkg */ 1140 AcpiUtRemoveReference (*Source); 1141 } 1142 else 1143 { 1144 *Dest = *Source; 1145 Dest++; 1146 } 1147 1148 Source++; 1149 } 1150 1151 /* NULL terminate list and update the package count */ 1152 1153 *Dest = NULL; 1154 ObjDesc->Package.Count = NewCount; 1155 } 1156