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