1272343Sngie/****************************************************************************** 2272343Sngie * 3272343Sngie * Module Name: nsrepair2 - Repair for objects returned by specific 4272343Sngie * predefined methods 5272343Sngie * 6272343Sngie *****************************************************************************/ 7272343Sngie 8272343Sngie/****************************************************************************** 9272343Sngie * 10272343Sngie * 1. Copyright Notice 11272343Sngie * 12272343Sngie * Some or all of this work - Copyright (c) 1999 - 2016, Intel Corp. 13272343Sngie * All rights reserved. 14272343Sngie * 15272343Sngie * 2. License 16272343Sngie * 17272343Sngie * 2.1. This is your license from Intel Corp. under its intellectual property 18272343Sngie * rights. You may have additional license terms from the party that provided 19272343Sngie * you this software, covering your right to use that party's intellectual 20272343Sngie * property rights. 21272343Sngie * 22272343Sngie * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23272343Sngie * copy of the source code appearing in this file ("Covered Code") an 24272343Sngie * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25272343Sngie * base code distributed originally by Intel ("Original Intel Code") to copy, 26272343Sngie * make derivatives, distribute, use and display any portion of the Covered 27272343Sngie * Code in any form, with the right to sublicense such rights; and 28272343Sngie * 29272343Sngie * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30272343Sngie * license (with the right to sublicense), under only those claims of Intel 31272343Sngie * patents that are infringed by the Original Intel Code, to make, use, sell, 32272343Sngie * offer to sell, and import the Covered Code and derivative works thereof 33272343Sngie * solely to the minimum extent necessary to exercise the above copyright 34272343Sngie * license, and in no event shall the patent license extend to any additions 35272343Sngie * to or modifications of the Original Intel Code. No other license or right 36272343Sngie * is granted directly or by implication, estoppel or otherwise; 37272343Sngie * 38272343Sngie * The above copyright and patent license is granted only if the following 39272343Sngie * conditions are met: 40272343Sngie * 41272343Sngie * 3. Conditions 42272343Sngie * 43272343Sngie * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44272343Sngie * Redistribution of source code of any substantial portion of the Covered 45272343Sngie * Code or modification with rights to further distribute source must include 46272343Sngie * the above Copyright Notice, the above License, this list of Conditions, 47272343Sngie * and the following Disclaimer and Export Compliance provision. In addition, 48272343Sngie * Licensee must cause all Covered Code to which Licensee contributes to 49272343Sngie * contain a file documenting the changes Licensee made to create that Covered 50272343Sngie * Code and the date of any change. Licensee must include in that file the 51272343Sngie * documentation of any changes made by any predecessor Licensee. Licensee 52272343Sngie * must include a prominent statement that the modification is derived, 53272343Sngie * directly or indirectly, from Original Intel Code. 54272343Sngie * 55272343Sngie * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56272343Sngie * Redistribution of source code of any substantial portion of the Covered 57272343Sngie * Code or modification without rights to further distribute source must 58272343Sngie * include the following Disclaimer and Export Compliance provision in the 59272343Sngie * documentation and/or other materials provided with distribution. In 60272343Sngie * addition, Licensee may not authorize further sublicense of source of any 61272343Sngie * portion of the Covered Code, and must include terms to the effect that the 62272343Sngie * license from Licensee to its licensee is limited to the intellectual 63272343Sngie * property embodied in the software Licensee provides to its licensee, and 64272343Sngie * not to intellectual property embodied in modifications its licensee may 65272343Sngie * make. 66272343Sngie * 67272343Sngie * 3.3. Redistribution of Executable. Redistribution in executable form of any 68272343Sngie * substantial portion of the Covered Code or modification must reproduce the 69272343Sngie * above Copyright Notice, and the following Disclaimer and Export Compliance 70272343Sngie * provision in the documentation and/or other materials provided with the 71272343Sngie * distribution. 72272343Sngie * 73272343Sngie * 3.4. Intel retains all right, title, and interest in and to the Original 74272343Sngie * Intel Code. 75272343Sngie * 76272343Sngie * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77272343Sngie * Intel shall be used in advertising or otherwise to promote the sale, use or 78272343Sngie * other dealings in products derived from or relating to the Covered Code 79272343Sngie * without prior written authorization from Intel. 80272343Sngie * 81272343Sngie * 4. Disclaimer and Export Compliance 82272343Sngie * 83272343Sngie * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84272343Sngie * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85272343Sngie * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86272343Sngie * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87272343Sngie * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88272343Sngie * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89272343Sngie * PARTICULAR PURPOSE. 90272343Sngie * 91272343Sngie * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92272343Sngie * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93272343Sngie * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94272343Sngie * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95272343Sngie * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96272343Sngie * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97272343Sngie * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98272343Sngie * LIMITED REMEDY. 99272343Sngie * 100272343Sngie * 4.3. Licensee shall not export, either directly or indirectly, any of this 101272343Sngie * software or system incorporating such software without first obtaining any 102272343Sngie * required license or other approval from the U. S. Department of Commerce or 103272343Sngie * any other agency or department of the United States Government. In the 104272343Sngie * event Licensee exports any such software from the United States or 105272343Sngie * re-exports any such software from a foreign destination, Licensee shall 106272343Sngie * ensure that the distribution and export/re-export of the software is in 107272343Sngie * compliance with all laws, regulations, orders, or other restrictions of the 108272343Sngie * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109272343Sngie * any of its subsidiaries will export/re-export any technical data, process, 110272343Sngie * software, or service, directly or indirectly, to any country for which the 111272343Sngie * United States government or any agency thereof requires an export license, 112272343Sngie * other governmental approval, or letter of assurance, without first obtaining 113272343Sngie * such license, approval or letter. 114272343Sngie * 115272343Sngie *****************************************************************************/ 116272343Sngie 117272343Sngie#include "acpi.h" 118272343Sngie#include "accommon.h" 119272343Sngie#include "acnamesp.h" 120272343Sngie 121272343Sngie#define _COMPONENT ACPI_NAMESPACE 122272343Sngie ACPI_MODULE_NAME ("nsrepair2") 123272343Sngie 124272343Sngie 125272343Sngie/* 126272343Sngie * Information structure and handler for ACPI predefined names that can 127272343Sngie * be repaired on a per-name basis. 128272343Sngie */ 129272343Sngietypedef 130272343SngieACPI_STATUS (*ACPI_REPAIR_FUNCTION) ( 131272343Sngie ACPI_EVALUATE_INFO *Info, 132272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 133272343Sngie 134272343Sngietypedef struct acpi_repair_info 135272343Sngie{ 136272343Sngie char Name[ACPI_NAME_SIZE]; 137272343Sngie ACPI_REPAIR_FUNCTION RepairFunction; 138272343Sngie 139272343Sngie} ACPI_REPAIR_INFO; 140272343Sngie 141272343Sngie 142272343Sngie/* Local prototypes */ 143272343Sngie 144272343Sngiestatic const ACPI_REPAIR_INFO * 145272343SngieAcpiNsMatchComplexRepair ( 146272343Sngie ACPI_NAMESPACE_NODE *Node); 147272343Sngie 148272343Sngiestatic ACPI_STATUS 149272343SngieAcpiNsRepair_ALR ( 150272343Sngie ACPI_EVALUATE_INFO *Info, 151272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 152272343Sngie 153272343Sngiestatic ACPI_STATUS 154272343SngieAcpiNsRepair_CID ( 155272343Sngie ACPI_EVALUATE_INFO *Info, 156272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 157272343Sngie 158272343Sngiestatic ACPI_STATUS 159272343SngieAcpiNsRepair_CST ( 160272343Sngie ACPI_EVALUATE_INFO *Info, 161272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 162272343Sngie 163272343Sngiestatic ACPI_STATUS 164272343SngieAcpiNsRepair_FDE ( 165272343Sngie ACPI_EVALUATE_INFO *Info, 166272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 167272343Sngie 168272343Sngiestatic ACPI_STATUS 169272343SngieAcpiNsRepair_HID ( 170272343Sngie ACPI_EVALUATE_INFO *Info, 171272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 172272343Sngie 173272343Sngiestatic ACPI_STATUS 174272343SngieAcpiNsRepair_PRT ( 175272343Sngie ACPI_EVALUATE_INFO *Info, 176272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 177272343Sngie 178272343Sngiestatic ACPI_STATUS 179272343SngieAcpiNsRepair_PSS ( 180272343Sngie ACPI_EVALUATE_INFO *Info, 181272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 182272343Sngie 183272343Sngiestatic ACPI_STATUS 184272343SngieAcpiNsRepair_TSS ( 185272343Sngie ACPI_EVALUATE_INFO *Info, 186272343Sngie ACPI_OPERAND_OBJECT **ReturnObjectPtr); 187272343Sngie 188272343Sngiestatic ACPI_STATUS 189272343SngieAcpiNsCheckSortedList ( 190272343Sngie ACPI_EVALUATE_INFO *Info, 191272343Sngie ACPI_OPERAND_OBJECT *ReturnObject, 192272343Sngie UINT32 StartIndex, 193272343Sngie UINT32 ExpectedCount, 194272343Sngie UINT32 SortIndex, 195272343Sngie UINT8 SortDirection, 196272343Sngie char *SortKeyName); 197272343Sngie 198272343Sngie/* Values for SortDirection above */ 199272343Sngie 200272343Sngie#define ACPI_SORT_ASCENDING 0 201272343Sngie#define ACPI_SORT_DESCENDING 1 202272343Sngie 203272343Sngiestatic void 204272343SngieAcpiNsRemoveElement ( 205272343Sngie ACPI_OPERAND_OBJECT *ObjDesc, 206272343Sngie UINT32 Index); 207272343Sngie 208272343Sngiestatic void 209272343SngieAcpiNsSortList ( 210272343Sngie ACPI_OPERAND_OBJECT **Elements, 211272343Sngie UINT32 Count, 212272343Sngie UINT32 Index, 213272343Sngie UINT8 SortDirection); 214272343Sngie 215272343Sngie 216272343Sngie/* 217272343Sngie * This table contains the names of the predefined methods for which we can 218272343Sngie * perform more complex repairs. 219272343Sngie * 220272343Sngie * As necessary: 221272343Sngie * 222272343Sngie * _ALR: Sort the list ascending by AmbientIlluminance 223272343Sngie * _CID: Strings: uppercase all, remove any leading asterisk 224272343Sngie * _CST: Sort the list ascending by C state type 225272343Sngie * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs 226272343Sngie * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs 227272343Sngie * _HID: Strings: uppercase all, remove any leading asterisk 228272343Sngie * _PRT: Fix reversed SourceName and SourceIndex 229272343Sngie * _PSS: Sort the list descending by Power 230272343Sngie * _TSS: Sort the list descending by Power 231272343Sngie * 232272343Sngie * Names that must be packages, but cannot be sorted: 233272343Sngie * 234272343Sngie * _BCL: Values are tied to the Package index where they appear, and cannot 235272343Sngie * be moved or sorted. These index values are used for _BQC and _BCM. 236272343Sngie * However, we can fix the case where a buffer is returned, by converting 237272343Sngie * it to a Package of integers. 238272343Sngie */ 239272343Sngiestatic const ACPI_REPAIR_INFO AcpiNsRepairableNames[] = 240272343Sngie{ 241272343Sngie {"_ALR", AcpiNsRepair_ALR}, 242272343Sngie {"_CID", AcpiNsRepair_CID}, 243272343Sngie {"_CST", AcpiNsRepair_CST}, 244272343Sngie {"_FDE", AcpiNsRepair_FDE}, 245272343Sngie {"_GTM", AcpiNsRepair_FDE}, /* _GTM has same repair as _FDE */ 246272343Sngie {"_HID", AcpiNsRepair_HID}, 247272343Sngie {"_PRT", AcpiNsRepair_PRT}, 248272343Sngie {"_PSS", AcpiNsRepair_PSS}, 249272343Sngie {"_TSS", AcpiNsRepair_TSS}, 250272343Sngie {{0,0,0,0}, NULL} /* Table terminator */ 251272343Sngie}; 252272343Sngie 253272343Sngie 254272343Sngie#define ACPI_FDE_FIELD_COUNT 5 255272343Sngie#define ACPI_FDE_BYTE_BUFFER_SIZE 5 256272343Sngie#define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (UINT32)) 257272343Sngie 258272343Sngie 259272343Sngie/****************************************************************************** 260272343Sngie * 261272343Sngie * 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 277ACPI_STATUS 278AcpiNsComplexRepairs ( 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 313static const ACPI_REPAIR_INFO * 314AcpiNsMatchComplexRepair ( 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 352static ACPI_STATUS 353AcpiNsRepair_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 385static ACPI_STATUS 386AcpiNsRepair_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 481static ACPI_STATUS 482AcpiNsRepair_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 560static ACPI_STATUS 561AcpiNsRepair_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 605RemoveElement: 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 652static ACPI_STATUS 653AcpiNsRepair_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 743static ACPI_STATUS 744AcpiNsRepair_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 817static ACPI_STATUS 818AcpiNsRepair_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 889static ACPI_STATUS 890AcpiNsRepair_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 941static ACPI_STATUS 942AcpiNsCheckSortedList ( 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 1061static void 1062AcpiNsSortList ( 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 1112static void 1113AcpiNsRemoveElement ( 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