1 /****************************************************************************** 2 * 3 * Module Name: nsprepkg - Validation of package objects for predefined names 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2016, 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 "acpredef.h" 120 121 122 #define _COMPONENT ACPI_NAMESPACE 123 ACPI_MODULE_NAME ("nsprepkg") 124 125 126 /* Local prototypes */ 127 128 static ACPI_STATUS 129 AcpiNsCheckPackageList ( 130 ACPI_EVALUATE_INFO *Info, 131 const ACPI_PREDEFINED_INFO *Package, 132 ACPI_OPERAND_OBJECT **Elements, 133 UINT32 Count); 134 135 static ACPI_STATUS 136 AcpiNsCheckPackageElements ( 137 ACPI_EVALUATE_INFO *Info, 138 ACPI_OPERAND_OBJECT **Elements, 139 UINT8 Type1, 140 UINT32 Count1, 141 UINT8 Type2, 142 UINT32 Count2, 143 UINT32 StartIndex); 144 145 static ACPI_STATUS 146 AcpiNsCustomPackage ( 147 ACPI_EVALUATE_INFO *Info, 148 ACPI_OPERAND_OBJECT **Elements, 149 UINT32 Count); 150 151 152 /******************************************************************************* 153 * 154 * FUNCTION: AcpiNsCheckPackage 155 * 156 * PARAMETERS: Info - Method execution information block 157 * ReturnObjectPtr - Pointer to the object returned from the 158 * evaluation of a method or object 159 * 160 * RETURN: Status 161 * 162 * DESCRIPTION: Check a returned package object for the correct count and 163 * correct type of all sub-objects. 164 * 165 ******************************************************************************/ 166 167 ACPI_STATUS 168 AcpiNsCheckPackage ( 169 ACPI_EVALUATE_INFO *Info, 170 ACPI_OPERAND_OBJECT **ReturnObjectPtr) 171 { 172 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; 173 const ACPI_PREDEFINED_INFO *Package; 174 ACPI_OPERAND_OBJECT **Elements; 175 ACPI_STATUS Status = AE_OK; 176 UINT32 ExpectedCount; 177 UINT32 Count; 178 UINT32 i; 179 180 181 ACPI_FUNCTION_NAME (NsCheckPackage); 182 183 184 /* The package info for this name is in the next table entry */ 185 186 Package = Info->Predefined + 1; 187 188 ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, 189 "%s Validating return Package of Type %X, Count %X\n", 190 Info->FullPathname, Package->RetInfo.Type, 191 ReturnObject->Package.Count)); 192 193 /* 194 * For variable-length Packages, we can safely remove all embedded 195 * and trailing NULL package elements 196 */ 197 AcpiNsRemoveNullElements (Info, Package->RetInfo.Type, ReturnObject); 198 199 /* Extract package count and elements array */ 200 201 Elements = ReturnObject->Package.Elements; 202 Count = ReturnObject->Package.Count; 203 204 /* 205 * Most packages must have at least one element. The only exception 206 * is the variable-length package (ACPI_PTYPE1_VAR). 207 */ 208 if (!Count) 209 { 210 if (Package->RetInfo.Type == ACPI_PTYPE1_VAR) 211 { 212 return (AE_OK); 213 } 214 215 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, 216 "Return Package has no elements (empty)")); 217 218 return (AE_AML_OPERAND_VALUE); 219 } 220 221 /* 222 * Decode the type of the expected package contents 223 * 224 * PTYPE1 packages contain no subpackages 225 * PTYPE2 packages contain subpackages 226 */ 227 switch (Package->RetInfo.Type) 228 { 229 case ACPI_PTYPE_CUSTOM: 230 231 Status = AcpiNsCustomPackage (Info, Elements, Count); 232 break; 233 234 case ACPI_PTYPE1_FIXED: 235 /* 236 * The package count is fixed and there are no subpackages 237 * 238 * If package is too small, exit. 239 * If package is larger than expected, issue warning but continue 240 */ 241 ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; 242 if (Count < ExpectedCount) 243 { 244 goto PackageTooSmall; 245 } 246 else if (Count > ExpectedCount) 247 { 248 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 249 "%s: Return Package is larger than needed - " 250 "found %u, expected %u\n", 251 Info->FullPathname, Count, ExpectedCount)); 252 } 253 254 /* Validate all elements of the returned package */ 255 256 Status = AcpiNsCheckPackageElements (Info, Elements, 257 Package->RetInfo.ObjectType1, Package->RetInfo.Count1, 258 Package->RetInfo.ObjectType2, Package->RetInfo.Count2, 0); 259 break; 260 261 case ACPI_PTYPE1_VAR: 262 /* 263 * The package count is variable, there are no subpackages, and all 264 * elements must be of the same type 265 */ 266 for (i = 0; i < Count; i++) 267 { 268 Status = AcpiNsCheckObjectType (Info, Elements, 269 Package->RetInfo.ObjectType1, i); 270 if (ACPI_FAILURE (Status)) 271 { 272 return (Status); 273 } 274 275 Elements++; 276 } 277 break; 278 279 case ACPI_PTYPE1_OPTION: 280 /* 281 * The package count is variable, there are no subpackages. There are 282 * a fixed number of required elements, and a variable number of 283 * optional elements. 284 * 285 * Check if package is at least as large as the minimum required 286 */ 287 ExpectedCount = Package->RetInfo3.Count; 288 if (Count < ExpectedCount) 289 { 290 goto PackageTooSmall; 291 } 292 293 /* Variable number of sub-objects */ 294 295 for (i = 0; i < Count; i++) 296 { 297 if (i < Package->RetInfo3.Count) 298 { 299 /* These are the required package elements (0, 1, or 2) */ 300 301 Status = AcpiNsCheckObjectType (Info, Elements, 302 Package->RetInfo3.ObjectType[i], i); 303 if (ACPI_FAILURE (Status)) 304 { 305 return (Status); 306 } 307 } 308 else 309 { 310 /* These are the optional package elements */ 311 312 Status = AcpiNsCheckObjectType (Info, Elements, 313 Package->RetInfo3.TailObjectType, i); 314 if (ACPI_FAILURE (Status)) 315 { 316 return (Status); 317 } 318 } 319 320 Elements++; 321 } 322 break; 323 324 case ACPI_PTYPE2_REV_FIXED: 325 326 /* First element is the (Integer) revision */ 327 328 Status = AcpiNsCheckObjectType ( 329 Info, Elements, ACPI_RTYPE_INTEGER, 0); 330 if (ACPI_FAILURE (Status)) 331 { 332 return (Status); 333 } 334 335 Elements++; 336 Count--; 337 338 /* Examine the subpackages */ 339 340 Status = AcpiNsCheckPackageList (Info, Package, Elements, Count); 341 break; 342 343 case ACPI_PTYPE2_PKG_COUNT: 344 345 /* First element is the (Integer) count of subpackages to follow */ 346 347 Status = AcpiNsCheckObjectType ( 348 Info, Elements, ACPI_RTYPE_INTEGER, 0); 349 if (ACPI_FAILURE (Status)) 350 { 351 return (Status); 352 } 353 354 /* 355 * Count cannot be larger than the parent package length, but allow it 356 * to be smaller. The >= accounts for the Integer above. 357 */ 358 ExpectedCount = (UINT32) (*Elements)->Integer.Value; 359 if (ExpectedCount >= Count) 360 { 361 goto PackageTooSmall; 362 } 363 364 Count = ExpectedCount; 365 Elements++; 366 367 /* Examine the subpackages */ 368 369 Status = AcpiNsCheckPackageList (Info, Package, Elements, Count); 370 break; 371 372 case ACPI_PTYPE2: 373 case ACPI_PTYPE2_FIXED: 374 case ACPI_PTYPE2_MIN: 375 case ACPI_PTYPE2_COUNT: 376 case ACPI_PTYPE2_FIX_VAR: 377 /* 378 * These types all return a single Package that consists of a 379 * variable number of subpackages. 380 * 381 * First, ensure that the first element is a subpackage. If not, 382 * the BIOS may have incorrectly returned the object as a single 383 * package instead of a Package of Packages (a common error if 384 * there is only one entry). We may be able to repair this by 385 * wrapping the returned Package with a new outer Package. 386 */ 387 if (*Elements && ((*Elements)->Common.Type != ACPI_TYPE_PACKAGE)) 388 { 389 /* Create the new outer package and populate it */ 390 391 Status = AcpiNsWrapWithPackage ( 392 Info, ReturnObject, ReturnObjectPtr); 393 if (ACPI_FAILURE (Status)) 394 { 395 return (Status); 396 } 397 398 /* Update locals to point to the new package (of 1 element) */ 399 400 ReturnObject = *ReturnObjectPtr; 401 Elements = ReturnObject->Package.Elements; 402 Count = 1; 403 } 404 405 /* Examine the subpackages */ 406 407 Status = AcpiNsCheckPackageList (Info, Package, Elements, Count); 408 break; 409 410 case ACPI_PTYPE2_VAR_VAR: 411 /* 412 * Returns a variable list of packages, each with a variable list 413 * of objects. 414 */ 415 break; 416 417 case ACPI_PTYPE2_UUID_PAIR: 418 419 /* The package must contain pairs of (UUID + type) */ 420 421 if (Count & 1) 422 { 423 ExpectedCount = Count + 1; 424 goto PackageTooSmall; 425 } 426 427 while (Count > 0) 428 { 429 Status = AcpiNsCheckObjectType(Info, Elements, 430 Package->RetInfo.ObjectType1, 0); 431 if (ACPI_FAILURE(Status)) 432 { 433 return (Status); 434 } 435 436 /* Validate length of the UUID buffer */ 437 438 if ((*Elements)->Buffer.Length != 16) 439 { 440 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, 441 Info->NodeFlags, "Invalid length for UUID Buffer")); 442 return (AE_AML_OPERAND_VALUE); 443 } 444 445 Status = AcpiNsCheckObjectType(Info, Elements + 1, 446 Package->RetInfo.ObjectType2, 0); 447 if (ACPI_FAILURE(Status)) 448 { 449 return (Status); 450 } 451 452 Elements += 2; 453 Count -= 2; 454 } 455 break; 456 457 default: 458 459 /* Should not get here if predefined info table is correct */ 460 461 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, 462 "Invalid internal return type in table entry: %X", 463 Package->RetInfo.Type)); 464 465 return (AE_AML_INTERNAL); 466 } 467 468 return (Status); 469 470 471 PackageTooSmall: 472 473 /* Error exit for the case with an incorrect package count */ 474 475 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, 476 "Return Package is too small - found %u elements, expected %u", 477 Count, ExpectedCount)); 478 479 return (AE_AML_OPERAND_VALUE); 480 } 481 482 483 /******************************************************************************* 484 * 485 * FUNCTION: AcpiNsCheckPackageList 486 * 487 * PARAMETERS: Info - Method execution information block 488 * Package - Pointer to package-specific info for method 489 * Elements - Element list of parent package. All elements 490 * of this list should be of type Package. 491 * Count - Count of subpackages 492 * 493 * RETURN: Status 494 * 495 * DESCRIPTION: Examine a list of subpackages 496 * 497 ******************************************************************************/ 498 499 static ACPI_STATUS 500 AcpiNsCheckPackageList ( 501 ACPI_EVALUATE_INFO *Info, 502 const ACPI_PREDEFINED_INFO *Package, 503 ACPI_OPERAND_OBJECT **Elements, 504 UINT32 Count) 505 { 506 ACPI_OPERAND_OBJECT *SubPackage; 507 ACPI_OPERAND_OBJECT **SubElements; 508 ACPI_STATUS Status; 509 UINT32 ExpectedCount; 510 UINT32 i; 511 UINT32 j; 512 513 514 /* 515 * Validate each subpackage in the parent Package 516 * 517 * NOTE: assumes list of subpackages contains no NULL elements. 518 * Any NULL elements should have been removed by earlier call 519 * to AcpiNsRemoveNullElements. 520 */ 521 for (i = 0; i < Count; i++) 522 { 523 SubPackage = *Elements; 524 SubElements = SubPackage->Package.Elements; 525 Info->ParentPackage = SubPackage; 526 527 /* Each sub-object must be of type Package */ 528 529 Status = AcpiNsCheckObjectType (Info, &SubPackage, 530 ACPI_RTYPE_PACKAGE, i); 531 if (ACPI_FAILURE (Status)) 532 { 533 return (Status); 534 } 535 536 /* Examine the different types of expected subpackages */ 537 538 Info->ParentPackage = SubPackage; 539 switch (Package->RetInfo.Type) 540 { 541 case ACPI_PTYPE2: 542 case ACPI_PTYPE2_PKG_COUNT: 543 case ACPI_PTYPE2_REV_FIXED: 544 545 /* Each subpackage has a fixed number of elements */ 546 547 ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; 548 if (SubPackage->Package.Count < ExpectedCount) 549 { 550 goto PackageTooSmall; 551 } 552 553 Status = AcpiNsCheckPackageElements (Info, SubElements, 554 Package->RetInfo.ObjectType1, 555 Package->RetInfo.Count1, 556 Package->RetInfo.ObjectType2, 557 Package->RetInfo.Count2, 0); 558 if (ACPI_FAILURE (Status)) 559 { 560 return (Status); 561 } 562 break; 563 564 case ACPI_PTYPE2_FIX_VAR: 565 /* 566 * Each subpackage has a fixed number of elements and an 567 * optional element 568 */ 569 ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; 570 if (SubPackage->Package.Count < ExpectedCount) 571 { 572 goto PackageTooSmall; 573 } 574 575 Status = AcpiNsCheckPackageElements (Info, SubElements, 576 Package->RetInfo.ObjectType1, 577 Package->RetInfo.Count1, 578 Package->RetInfo.ObjectType2, 579 SubPackage->Package.Count - Package->RetInfo.Count1, 0); 580 if (ACPI_FAILURE (Status)) 581 { 582 return (Status); 583 } 584 break; 585 586 case ACPI_PTYPE2_VAR_VAR: 587 /* 588 * Each subpackage has a fixed or variable number of elements 589 */ 590 break; 591 592 case ACPI_PTYPE2_FIXED: 593 594 /* Each subpackage has a fixed length */ 595 596 ExpectedCount = Package->RetInfo2.Count; 597 if (SubPackage->Package.Count < ExpectedCount) 598 { 599 goto PackageTooSmall; 600 } 601 602 /* Check the type of each subpackage element */ 603 604 for (j = 0; j < ExpectedCount; j++) 605 { 606 Status = AcpiNsCheckObjectType (Info, &SubElements[j], 607 Package->RetInfo2.ObjectType[j], j); 608 if (ACPI_FAILURE (Status)) 609 { 610 return (Status); 611 } 612 } 613 break; 614 615 case ACPI_PTYPE2_MIN: 616 617 /* Each subpackage has a variable but minimum length */ 618 619 ExpectedCount = Package->RetInfo.Count1; 620 if (SubPackage->Package.Count < ExpectedCount) 621 { 622 goto PackageTooSmall; 623 } 624 625 /* Check the type of each subpackage element */ 626 627 Status = AcpiNsCheckPackageElements (Info, SubElements, 628 Package->RetInfo.ObjectType1, 629 SubPackage->Package.Count, 0, 0, 0); 630 if (ACPI_FAILURE (Status)) 631 { 632 return (Status); 633 } 634 break; 635 636 case ACPI_PTYPE2_COUNT: 637 /* 638 * First element is the (Integer) count of elements, including 639 * the count field (the ACPI name is NumElements) 640 */ 641 Status = AcpiNsCheckObjectType (Info, SubElements, 642 ACPI_RTYPE_INTEGER, 0); 643 if (ACPI_FAILURE (Status)) 644 { 645 return (Status); 646 } 647 648 /* 649 * Make sure package is large enough for the Count and is 650 * is as large as the minimum size 651 */ 652 ExpectedCount = (UINT32) (*SubElements)->Integer.Value; 653 if (SubPackage->Package.Count < ExpectedCount) 654 { 655 goto PackageTooSmall; 656 } 657 658 if (SubPackage->Package.Count < Package->RetInfo.Count1) 659 { 660 ExpectedCount = Package->RetInfo.Count1; 661 goto PackageTooSmall; 662 } 663 664 if (ExpectedCount == 0) 665 { 666 /* 667 * Either the NumEntries element was originally zero or it was 668 * a NULL element and repaired to an Integer of value zero. 669 * In either case, repair it by setting NumEntries to be the 670 * actual size of the subpackage. 671 */ 672 ExpectedCount = SubPackage->Package.Count; 673 (*SubElements)->Integer.Value = ExpectedCount; 674 } 675 676 /* Check the type of each subpackage element */ 677 678 Status = AcpiNsCheckPackageElements (Info, (SubElements + 1), 679 Package->RetInfo.ObjectType1, 680 (ExpectedCount - 1), 0, 0, 1); 681 if (ACPI_FAILURE (Status)) 682 { 683 return (Status); 684 } 685 break; 686 687 default: /* Should not get here, type was validated by caller */ 688 689 return (AE_AML_INTERNAL); 690 } 691 692 Elements++; 693 } 694 695 return (AE_OK); 696 697 698 PackageTooSmall: 699 700 /* The subpackage count was smaller than required */ 701 702 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, 703 "Return SubPackage[%u] is too small - found %u elements, expected %u", 704 i, SubPackage->Package.Count, ExpectedCount)); 705 706 return (AE_AML_OPERAND_VALUE); 707 } 708 709 710 /******************************************************************************* 711 * 712 * FUNCTION: AcpiNsCustomPackage 713 * 714 * PARAMETERS: Info - Method execution information block 715 * Elements - Pointer to the package elements array 716 * Count - Element count for the package 717 * 718 * RETURN: Status 719 * 720 * DESCRIPTION: Check a returned package object for the correct count and 721 * correct type of all sub-objects. 722 * 723 * NOTE: Currently used for the _BIX method only. When needed for two or more 724 * methods, probably a detect/dispatch mechanism will be required. 725 * 726 ******************************************************************************/ 727 728 static ACPI_STATUS 729 AcpiNsCustomPackage ( 730 ACPI_EVALUATE_INFO *Info, 731 ACPI_OPERAND_OBJECT **Elements, 732 UINT32 Count) 733 { 734 UINT32 ExpectedCount; 735 UINT32 Version; 736 ACPI_STATUS Status = AE_OK; 737 738 739 ACPI_FUNCTION_NAME (NsCustomPackage); 740 741 742 /* Get version number, must be Integer */ 743 744 if ((*Elements)->Common.Type != ACPI_TYPE_INTEGER) 745 { 746 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, 747 "Return Package has invalid object type for version number")); 748 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 749 } 750 751 Version = (UINT32) (*Elements)->Integer.Value; 752 ExpectedCount = 21; /* Version 1 */ 753 754 if (Version == 0) 755 { 756 ExpectedCount = 20; /* Version 0 */ 757 } 758 759 if (Count < ExpectedCount) 760 { 761 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, 762 "Return Package is too small - found %u elements, expected %u", 763 Count, ExpectedCount)); 764 return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 765 } 766 else if (Count > ExpectedCount) 767 { 768 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, 769 "%s: Return Package is larger than needed - " 770 "found %u, expected %u\n", 771 Info->FullPathname, Count, ExpectedCount)); 772 } 773 774 /* Validate all elements of the returned package */ 775 776 Status = AcpiNsCheckPackageElements (Info, Elements, 777 ACPI_RTYPE_INTEGER, 16, 778 ACPI_RTYPE_STRING, 4, 0); 779 if (ACPI_FAILURE (Status)) 780 { 781 return_ACPI_STATUS (Status); 782 } 783 784 /* Version 1 has a single trailing integer */ 785 786 if (Version > 0) 787 { 788 Status = AcpiNsCheckPackageElements (Info, Elements + 20, 789 ACPI_RTYPE_INTEGER, 1, 0, 0, 20); 790 } 791 792 return_ACPI_STATUS (Status); 793 } 794 795 796 /******************************************************************************* 797 * 798 * FUNCTION: AcpiNsCheckPackageElements 799 * 800 * PARAMETERS: Info - Method execution information block 801 * Elements - Pointer to the package elements array 802 * Type1 - Object type for first group 803 * Count1 - Count for first group 804 * Type2 - Object type for second group 805 * Count2 - Count for second group 806 * StartIndex - Start of the first group of elements 807 * 808 * RETURN: Status 809 * 810 * DESCRIPTION: Check that all elements of a package are of the correct object 811 * type. Supports up to two groups of different object types. 812 * 813 ******************************************************************************/ 814 815 static ACPI_STATUS 816 AcpiNsCheckPackageElements ( 817 ACPI_EVALUATE_INFO *Info, 818 ACPI_OPERAND_OBJECT **Elements, 819 UINT8 Type1, 820 UINT32 Count1, 821 UINT8 Type2, 822 UINT32 Count2, 823 UINT32 StartIndex) 824 { 825 ACPI_OPERAND_OBJECT **ThisElement = Elements; 826 ACPI_STATUS Status; 827 UINT32 i; 828 829 830 /* 831 * Up to two groups of package elements are supported by the data 832 * structure. All elements in each group must be of the same type. 833 * The second group can have a count of zero. 834 */ 835 for (i = 0; i < Count1; i++) 836 { 837 Status = AcpiNsCheckObjectType (Info, ThisElement, 838 Type1, i + StartIndex); 839 if (ACPI_FAILURE (Status)) 840 { 841 return (Status); 842 } 843 844 ThisElement++; 845 } 846 847 for (i = 0; i < Count2; i++) 848 { 849 Status = AcpiNsCheckObjectType (Info, ThisElement, 850 Type2, (i + Count1 + StartIndex)); 851 if (ACPI_FAILURE (Status)) 852 { 853 return (Status); 854 } 855 856 ThisElement++; 857 } 858 859 return (AE_OK); 860 } 861