1 /****************************************************************************** 2 * 3 * Module Name: nsrepair - Repair for objects returned by predefined methods 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 #include "acpi.h" 117 #include "accommon.h" 118 #include "acnamesp.h" 119 #include "acinterp.h" 120 #include "acpredef.h" 121 #include "amlresrc.h" 122 123 #define _COMPONENT ACPI_NAMESPACE 124 ACPI_MODULE_NAME ("nsrepair") 125 126 127 /******************************************************************************* 128 * 129 * This module attempts to repair or convert objects returned by the 130 * predefined methods to an object type that is expected, as per the ACPI 131 * specification. The need for this code is dictated by the many machines that 132 * return incorrect types for the standard predefined methods. Performing these 133 * conversions here, in one place, eliminates the need for individual ACPI 134 * device drivers to do the same. Note: Most of these conversions are different 135 * than the internal object conversion routines used for implicit object 136 * conversion. 137 * 138 * The following conversions can be performed as necessary: 139 * 140 * Integer -> String 141 * Integer -> Buffer 142 * String -> Integer 143 * String -> Buffer 144 * Buffer -> Integer 145 * Buffer -> String 146 * Buffer -> Package of Integers 147 * Package -> Package of one Package 148 * 149 * Additional conversions that are available: 150 * Convert a null return or zero return value to an EndTag descriptor 151 * Convert an ASCII string to a Unicode buffer 152 * 153 * An incorrect standalone object is wrapped with required outer package 154 * 155 * Additional possible repairs: 156 * Required package elements that are NULL replaced by Integer/String/Buffer 157 * 158 ******************************************************************************/ 159 160 161 /* Local prototypes */ 162 163 static const ACPI_SIMPLE_REPAIR_INFO * 164 AcpiNsMatchSimpleRepair ( 165 ACPI_NAMESPACE_NODE *Node, 166 UINT32 ReturnBtype, 167 UINT32 PackageIndex); 168 169 170 /* 171 * Special but simple repairs for some names. 172 * 173 * 2nd argument: Unexpected types that can be repaired 174 */ 175 static const ACPI_SIMPLE_REPAIR_INFO AcpiObjectRepairInfo[] = 176 { 177 /* Resource descriptor conversions */ 178 179 { "_CRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE, 180 ACPI_NOT_PACKAGE_ELEMENT, 181 AcpiNsConvertToResource }, 182 { "_DMA", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE, 183 ACPI_NOT_PACKAGE_ELEMENT, 184 AcpiNsConvertToResource }, 185 { "_PRS", ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER | ACPI_RTYPE_NONE, 186 ACPI_NOT_PACKAGE_ELEMENT, 187 AcpiNsConvertToResource }, 188 189 /* Unicode conversions */ 190 191 { "_MLS", ACPI_RTYPE_STRING, 1, 192 AcpiNsConvertToUnicode }, 193 { "_STR", ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER, 194 ACPI_NOT_PACKAGE_ELEMENT, 195 AcpiNsConvertToUnicode }, 196 { {0,0,0,0}, 0, 0, NULL } /* Table terminator */ 197 }; 198 199 200 /******************************************************************************* 201 * 202 * FUNCTION: AcpiNsSimpleRepair 203 * 204 * PARAMETERS: Info - Method execution information block 205 * ExpectedBtypes - Object types expected 206 * PackageIndex - Index of object within parent package (if 207 * applicable - ACPI_NOT_PACKAGE_ELEMENT 208 * otherwise) 209 * ReturnObjectPtr - Pointer to the object returned from the 210 * evaluation of a method or object 211 * 212 * RETURN: Status. AE_OK if repair was successful. 213 * 214 * DESCRIPTION: Attempt to repair/convert a return object of a type that was 215 * not expected. 216 * 217 ******************************************************************************/ 218 219 ACPI_STATUS 220 AcpiNsSimpleRepair ( 221 ACPI_EVALUATE_INFO *Info, 222 UINT32 ExpectedBtypes, 223 UINT32 PackageIndex, 224 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 225 { 226 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 227 ACPI_OPERAND_OBJECT *NewObject = NULL; 228 ACPI_STATUS Status; 229 const ACPI_SIMPLE_REPAIR_INFO *Predefined; 230 231 232 ACPI_FUNCTION_NAME (NsSimpleRepair); 233 234 235 /* 236 * Special repairs for certain names that are in the repair table. 237 * Check if this name is in the list of repairable names. 238 */ 239 Predefined = AcpiNsMatchSimpleRepair (Info->Node, 240 Info->ReturnBtype, PackageIndex); 241 if (Predefined) 242 { 243 if (!ReturnObject) 244 { 245 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, 246 ACPI_WARN_ALWAYS, "Missing expected return value")); 247 } 248 249 Status = Predefined->ObjectConverter (ReturnObject, &NewObject); 250 if (ACPI_FAILURE (Status)) 251 { 252 /* A fatal error occurred during a conversion */ 253 254 ACPI_EXCEPTION ((AE_INFO, Status, 255 "During return object analysis")); 256 return (Status); 257 } 258 if (NewObject) 259 { 260 goto ObjectRepaired; 261 } 262 } 263 264 /* 265 * Do not perform simple object repair unless the return type is not 266 * expected. 267 */ 268 if (Info->ReturnBtype & ExpectedBtypes) 269 { 270 return (AE_OK); 271 } 272 273 /* 274 * At this point, we know that the type of the returned object was not 275 * one of the expected types for this predefined name. Attempt to 276 * repair the object by converting it to one of the expected object 277 * types for this predefined name. 278 */ 279 280 /* 281 * If there is no return value, check if we require a return value for 282 * this predefined name. Either one return value is expected, or none, 283 * for both methods and other objects. 284 * 285 * Try to fix if there was no return object. Warning if failed to fix. 286 */ 287 if (!ReturnObject) 288 { 289 if (ExpectedBtypes && (!(ExpectedBtypes & ACPI_RTYPE_NONE))) 290 { 291 if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT) 292 { 293 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, 294 ACPI_WARN_ALWAYS, "Found unexpected NULL package element")); 295 296 Status = AcpiNsRepairNullElement (Info, ExpectedBtypes, 297 PackageIndex, ReturnObjectPtr); 298 if (ACPI_SUCCESS (Status)) 299 { 300 return (AE_OK); /* Repair was successful */ 301 } 302 } 303 else 304 { 305 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, 306 ACPI_WARN_ALWAYS, "Missing expected return value")); 307 } 308 309 return (AE_AML_NO_RETURN_VALUE); 310 } 311 } 312 313 if (ExpectedBtypes & ACPI_RTYPE_INTEGER) 314 { 315 Status = AcpiNsConvertToInteger (ReturnObject, &NewObject); 316 if (ACPI_SUCCESS (Status)) 317 { 318 goto ObjectRepaired; 319 } 320 } 321 if (ExpectedBtypes & ACPI_RTYPE_STRING) 322 { 323 Status = AcpiNsConvertToString (ReturnObject, &NewObject); 324 if (ACPI_SUCCESS (Status)) 325 { 326 goto ObjectRepaired; 327 } 328 } 329 if (ExpectedBtypes & ACPI_RTYPE_BUFFER) 330 { 331 Status = AcpiNsConvertToBuffer (ReturnObject, &NewObject); 332 if (ACPI_SUCCESS (Status)) 333 { 334 goto ObjectRepaired; 335 } 336 } 337 if (ExpectedBtypes & ACPI_RTYPE_PACKAGE) 338 { 339 /* 340 * A package is expected. We will wrap the existing object with a 341 * new package object. It is often the case that if a variable-length 342 * package is required, but there is only a single object needed, the 343 * BIOS will return that object instead of wrapping it with a Package 344 * object. Note: after the wrapping, the package will be validated 345 * for correct contents (expected object type or types). 346 */ 347 Status = AcpiNsWrapWithPackage (Info, ReturnObject, &NewObject); 348 if (ACPI_SUCCESS (Status)) 349 { 350 /* 351 * The original object just had its reference count 352 * incremented for being inserted into the new package. 353 */ 354 *ReturnObjectPtr = NewObject; /* New Package object */ 355 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 356 return (AE_OK); 357 } 358 } 359 360 /* We cannot repair this object */ 361 362 return (AE_AML_OPERAND_TYPE); 363 364 365 ObjectRepaired: 366 367 /* Object was successfully repaired */ 368 369 if (PackageIndex != ACPI_NOT_PACKAGE_ELEMENT) 370 { 371 /* 372 * The original object is a package element. We need to 373 * decrement the reference count of the original object, 374 * for removing it from the package. 375 * 376 * However, if the original object was just wrapped with a 377 * package object as part of the repair, we don't need to 378 * change the reference count. 379 */ 380 if (!(Info->ReturnFlags & ACPI_OBJECT_WRAPPED)) 381 { 382 NewObject->Common.ReferenceCount = 383 ReturnObject->Common.ReferenceCount; 384 385 if (ReturnObject->Common.ReferenceCount > 1) 386 { 387 ReturnObject->Common.ReferenceCount--; 388 } 389 } 390 391 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 392 "%s: Converted %s to expected %s at Package index %u\n", 393 Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject), 394 AcpiUtGetObjectTypeName (NewObject), PackageIndex)); 395 } 396 else 397 { 398 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 399 "%s: Converted %s to expected %s\n", 400 Info->FullPathname, AcpiUtGetObjectTypeName (ReturnObject), 401 AcpiUtGetObjectTypeName (NewObject))); 402 } 403 404 /* Delete old object, install the new return object */ 405 406 AcpiUtRemoveReference (ReturnObject); 407 *ReturnObjectPtr = NewObject; 408 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 409 return (AE_OK); 410 } 411 412 413 /****************************************************************************** 414 * 415 * FUNCTION: AcpiNsMatchSimpleRepair 416 * 417 * PARAMETERS: Node - Namespace node for the method/object 418 * ReturnBtype - Object type that was returned 419 * PackageIndex - Index of object within parent package (if 420 * applicable - ACPI_NOT_PACKAGE_ELEMENT 421 * otherwise) 422 * 423 * RETURN: Pointer to entry in repair table. NULL indicates not found. 424 * 425 * DESCRIPTION: Check an object name against the repairable object list. 426 * 427 *****************************************************************************/ 428 429 static const ACPI_SIMPLE_REPAIR_INFO * 430 AcpiNsMatchSimpleRepair ( 431 ACPI_NAMESPACE_NODE *Node, 432 UINT32 ReturnBtype, 433 UINT32 PackageIndex) 434 { 435 const ACPI_SIMPLE_REPAIR_INFO *ThisName; 436 437 438 /* Search info table for a repairable predefined method/object name */ 439 440 ThisName = AcpiObjectRepairInfo; 441 while (ThisName->ObjectConverter) 442 { 443 if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name)) 444 { 445 /* Check if we can actually repair this name/type combination */ 446 447 if ((ReturnBtype & ThisName->UnexpectedBtypes) && 448 (PackageIndex == ThisName->PackageIndex)) 449 { 450 return (ThisName); 451 } 452 453 return (NULL); 454 } 455 ThisName++; 456 } 457 458 return (NULL); /* Name was not found in the repair table */ 459 } 460 461 462 /******************************************************************************* 463 * 464 * FUNCTION: AcpiNsRepairNullElement 465 * 466 * PARAMETERS: Info - Method execution information block 467 * ExpectedBtypes - Object types expected 468 * PackageIndex - Index of object within parent package (if 469 * applicable - ACPI_NOT_PACKAGE_ELEMENT 470 * otherwise) 471 * ReturnObjectPtr - Pointer to the object returned from the 472 * evaluation of a method or object 473 * 474 * RETURN: Status. AE_OK if repair was successful. 475 * 476 * DESCRIPTION: Attempt to repair a NULL element of a returned Package object. 477 * 478 ******************************************************************************/ 479 480 ACPI_STATUS 481 AcpiNsRepairNullElement ( 482 ACPI_EVALUATE_INFO *Info, 483 UINT32 ExpectedBtypes, 484 UINT32 PackageIndex, 485 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 486 { 487 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 488 ACPI_OPERAND_OBJECT *NewObject; 489 490 491 ACPI_FUNCTION_NAME (NsRepairNullElement); 492 493 494 /* No repair needed if return object is non-NULL */ 495 496 if (ReturnObject) 497 { 498 return (AE_OK); 499 } 500 501 /* 502 * Attempt to repair a NULL element of a Package object. This applies to 503 * predefined names that return a fixed-length package and each element 504 * is required. It does not apply to variable-length packages where NULL 505 * elements are allowed, especially at the end of the package. 506 */ 507 if (ExpectedBtypes & ACPI_RTYPE_INTEGER) 508 { 509 /* Need an Integer - create a zero-value integer */ 510 511 NewObject = AcpiUtCreateIntegerObject ((UINT64) 0); 512 } 513 else if (ExpectedBtypes & ACPI_RTYPE_STRING) 514 { 515 /* Need a String - create a NULL string */ 516 517 NewObject = AcpiUtCreateStringObject (0); 518 } 519 else if (ExpectedBtypes & ACPI_RTYPE_BUFFER) 520 { 521 /* Need a Buffer - create a zero-length buffer */ 522 523 NewObject = AcpiUtCreateBufferObject (0); 524 } 525 else 526 { 527 /* Error for all other expected types */ 528 529 return (AE_AML_OPERAND_TYPE); 530 } 531 532 if (!NewObject) 533 { 534 return (AE_NO_MEMORY); 535 } 536 537 /* Set the reference count according to the parent Package object */ 538 539 NewObject->Common.ReferenceCount = Info->ParentPackage->Common.ReferenceCount; 540 541 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 542 "%s: Converted NULL package element to expected %s at index %u\n", 543 Info->FullPathname, AcpiUtGetObjectTypeName (NewObject), PackageIndex)); 544 545 *ReturnObjectPtr = NewObject; 546 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; 547 return (AE_OK); 548 } 549 550 551 /****************************************************************************** 552 * 553 * FUNCTION: AcpiNsRemoveNullElements 554 * 555 * PARAMETERS: Info - Method execution information block 556 * PackageType - An AcpiReturnPackageTypes value 557 * ObjDesc - A Package object 558 * 559 * RETURN: None. 560 * 561 * DESCRIPTION: Remove all NULL package elements from packages that contain 562 * a variable number of subpackages. For these types of 563 * packages, NULL elements can be safely removed. 564 * 565 *****************************************************************************/ 566 567 void 568 AcpiNsRemoveNullElements ( 569 ACPI_EVALUATE_INFO *Info, 570 UINT8 PackageType, 571 ACPI_OPERAND_OBJECT *ObjDesc) 572 { 573 ACPI_OPERAND_OBJECT **Source; 574 ACPI_OPERAND_OBJECT **Dest; 575 UINT32 Count; 576 UINT32 NewCount; 577 UINT32 i; 578 579 580 ACPI_FUNCTION_NAME (NsRemoveNullElements); 581 582 583 /* 584 * We can safely remove all NULL elements from these package types: 585 * PTYPE1_VAR packages contain a variable number of simple data types. 586 * PTYPE2 packages contain a variable number of subpackages. 587 */ 588 switch (PackageType) 589 { 590 case ACPI_PTYPE1_VAR: 591 case ACPI_PTYPE2: 592 case ACPI_PTYPE2_COUNT: 593 case ACPI_PTYPE2_PKG_COUNT: 594 case ACPI_PTYPE2_FIXED: 595 case ACPI_PTYPE2_MIN: 596 case ACPI_PTYPE2_REV_FIXED: 597 case ACPI_PTYPE2_FIX_VAR: 598 break; 599 600 default: 601 case ACPI_PTYPE2_VAR_VAR: 602 case ACPI_PTYPE1_FIXED: 603 case ACPI_PTYPE1_OPTION: 604 return; 605 } 606 607 Count = ObjDesc->Package.Count; 608 NewCount = Count; 609 610 Source = ObjDesc->Package.Elements; 611 Dest = Source; 612 613 /* Examine all elements of the package object, remove nulls */ 614 615 for (i = 0; i < Count; i++) 616 { 617 if (!*Source) 618 { 619 NewCount--; 620 } 621 else 622 { 623 *Dest = *Source; 624 Dest++; 625 } 626 Source++; 627 } 628 629 /* Update parent package if any null elements were removed */ 630 631 if (NewCount < Count) 632 { 633 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 634 "%s: Found and removed %u NULL elements\n", 635 Info->FullPathname, (Count - NewCount))); 636 637 /* NULL terminate list and update the package count */ 638 639 *Dest = NULL; 640 ObjDesc->Package.Count = NewCount; 641 } 642 } 643 644 645 /******************************************************************************* 646 * 647 * FUNCTION: AcpiNsWrapWithPackage 648 * 649 * PARAMETERS: Info - Method execution information block 650 * OriginalObject - Pointer to the object to repair. 651 * ObjDescPtr - The new package object is returned here 652 * 653 * RETURN: Status, new object in *ObjDescPtr 654 * 655 * DESCRIPTION: Repair a common problem with objects that are defined to 656 * return a variable-length Package of sub-objects. If there is 657 * only one sub-object, some BIOS code mistakenly simply declares 658 * the single object instead of a Package with one sub-object. 659 * This function attempts to repair this error by wrapping a 660 * Package object around the original object, creating the 661 * correct and expected Package with one sub-object. 662 * 663 * Names that can be repaired in this manner include: 664 * _ALR, _CSD, _HPX, _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, 665 * _BCL, _DOD, _FIX, _Sx 666 * 667 ******************************************************************************/ 668 669 ACPI_STATUS 670 AcpiNsWrapWithPackage ( 671 ACPI_EVALUATE_INFO *Info, 672 ACPI_OPERAND_OBJECT *OriginalObject, 673 ACPI_OPERAND_OBJECT **ObjDescPtr) 674 { 675 ACPI_OPERAND_OBJECT *PkgObjDesc; 676 677 678 ACPI_FUNCTION_NAME (NsWrapWithPackage); 679 680 681 /* 682 * Create the new outer package and populate it. The new package will 683 * have a single element, the lone sub-object. 684 */ 685 PkgObjDesc = AcpiUtCreatePackageObject (1); 686 if (!PkgObjDesc) 687 { 688 return (AE_NO_MEMORY); 689 } 690 691 PkgObjDesc->Package.Elements[0] = OriginalObject; 692 693 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 694 "%s: Wrapped %s with expected Package object\n", 695 Info->FullPathname, AcpiUtGetObjectTypeName (OriginalObject))); 696 697 /* Return the new object in the object pointer */ 698 699 *ObjDescPtr = PkgObjDesc; 700 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED; 701 return (AE_OK); 702 } 703