6 * 7 *****************************************************************************/ 8 9/****************************************************************************** 10 * 11 * 1. Copyright Notice 12 * 13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp. 14 * All rights reserved. 15 * 16 * 2. License 17 * 18 * 2.1. This is your license from Intel Corp. under its intellectual property 19 * rights. You may have additional license terms from the party that provided 20 * you this software, covering your right to use that party's intellectual 21 * property rights. 22 * 23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24 * copy of the source code appearing in this file ("Covered Code") an 25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26 * base code distributed originally by Intel ("Original Intel Code") to copy, 27 * make derivatives, distribute, use and display any portion of the Covered 28 * Code in any form, with the right to sublicense such rights; and 29 * 30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31 * license (with the right to sublicense), under only those claims of Intel 32 * patents that are infringed by the Original Intel Code, to make, use, sell, 33 * offer to sell, and import the Covered Code and derivative works thereof 34 * solely to the minimum extent necessary to exercise the above copyright 35 * license, and in no event shall the patent license extend to any additions 36 * to or modifications of the Original Intel Code. No other license or right 37 * is granted directly or by implication, estoppel or otherwise; 38 * 39 * The above copyright and patent license is granted only if the following 40 * conditions are met: 41 * 42 * 3. Conditions 43 * 44 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45 * Redistribution of source code of any substantial portion of the Covered 46 * Code or modification with rights to further distribute source must include 47 * the above Copyright Notice, the above License, this list of Conditions, 48 * and the following Disclaimer and Export Compliance provision. In addition, 49 * Licensee must cause all Covered Code to which Licensee contributes to 50 * contain a file documenting the changes Licensee made to create that Covered 51 * Code and the date of any change. Licensee must include in that file the 52 * documentation of any changes made by any predecessor Licensee. Licensee 53 * must include a prominent statement that the modification is derived, 54 * directly or indirectly, from Original Intel Code. 55 * 56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57 * Redistribution of source code of any substantial portion of the Covered 58 * Code or modification without rights to further distribute source must 59 * include the following Disclaimer and Export Compliance provision in the 60 * documentation and/or other materials provided with distribution. In 61 * addition, Licensee may not authorize further sublicense of source of any 62 * portion of the Covered Code, and must include terms to the effect that the 63 * license from Licensee to its licensee is limited to the intellectual 64 * property embodied in the software Licensee provides to its licensee, and 65 * not to intellectual property embodied in modifications its licensee may 66 * make. 67 * 68 * 3.3. Redistribution of Executable. Redistribution in executable form of any 69 * substantial portion of the Covered Code or modification must reproduce the 70 * above Copyright Notice, and the following Disclaimer and Export Compliance 71 * provision in the documentation and/or other materials provided with the 72 * distribution. 73 * 74 * 3.4. Intel retains all right, title, and interest in and to the Original 75 * Intel Code. 76 * 77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78 * Intel shall be used in advertising or otherwise to promote the sale, use or 79 * other dealings in products derived from or relating to the Covered Code 80 * without prior written authorization from Intel. 81 * 82 * 4. Disclaimer and Export Compliance 83 * 84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 90 * PARTICULAR PURPOSE. 91 * 92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 99 * LIMITED REMEDY. 100 * 101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 102 * software or system incorporating such software without first obtaining any 103 * required license or other approval from the U. S. Department of Commerce or 104 * any other agency or department of the United States Government. In the 105 * event Licensee exports any such software from the United States or 106 * re-exports any such software from a foreign destination, Licensee shall 107 * ensure that the distribution and export/re-export of the software is in 108 * compliance with all laws, regulations, orders, or other restrictions of the 109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 110 * any of its subsidiaries will export/re-export any technical data, process, 111 * software, or service, directly or indirectly, to any country for which the 112 * United States government or any agency thereof requires an export license, 113 * other governmental approval, or letter of assurance, without first obtaining 114 * such license, approval or letter. 115 * 116 *****************************************************************************/ 117 118#define __DSOPCODE_C__ 119 120#include "acpi.h" 121#include "acparser.h" 122#include "amlcode.h" 123#include "acdispat.h" 124#include "acinterp.h" 125#include "acnamesp.h" 126#include "acevents.h" 127 128#define _COMPONENT ACPI_DISPATCHER 129 ACPI_MODULE_NAME ("dsopcode") 130 131 132/***************************************************************************** 133 * 134 * FUNCTION: AcpiDsExecuteArguments 135 * 136 * PARAMETERS: Node - Parent NS node 137 * AmlLength - Length of executable AML 138 * AmlStart - Pointer to the AML 139 * 140 * RETURN: Status. 141 * 142 * DESCRIPTION: Late (deferred) execution of region or field arguments 143 * 144 ****************************************************************************/ 145 146ACPI_STATUS 147AcpiDsExecuteArguments ( 148 ACPI_NAMESPACE_NODE *Node, 149 ACPI_NAMESPACE_NODE *ScopeNode, 150 UINT32 AmlLength, 151 UINT8 *AmlStart) 152{ 153 ACPI_STATUS Status; 154 ACPI_PARSE_OBJECT *Op; 155 ACPI_WALK_STATE *WalkState;
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207 AcpiPsDeleteParseTree (Op); 208 209 /* Evaluate the deferred arguments */ 210 211 Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP); 212 if (!Op) 213 { 214 return_ACPI_STATUS (AE_NO_MEMORY); 215 } 216 217 Op->Common.Node = ScopeNode; 218 219 /* Create and initialize a new parser state */ 220 221 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); 222 if (!WalkState) 223 { 224 return_ACPI_STATUS (AE_NO_MEMORY); 225 } 226 227 /* Execute the opcode and arguments */ 228 229 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart, 230 AmlLength, NULL, 3); 231 if (ACPI_FAILURE (Status)) 232 { 233 AcpiDsDeleteWalkState (WalkState); 234 return_ACPI_STATUS (Status); 235 } 236 237 /* Mark this execution as a deferred opcode */ 238 239 WalkState->DeferredNode = Node; 240 Status = AcpiPsParseAml (WalkState); 241 AcpiPsDeleteParseTree (Op); 242 return_ACPI_STATUS (Status); 243} 244 245 246/***************************************************************************** 247 * 248 * FUNCTION: AcpiDsGetBufferFieldArguments 249 * 250 * PARAMETERS: ObjDesc - A valid BufferField object 251 * 252 * RETURN: Status. 253 * 254 * DESCRIPTION: Get BufferField Buffer and Index. This implements the late 255 * evaluation of these field attributes. 256 * 257 ****************************************************************************/ 258 259ACPI_STATUS 260AcpiDsGetBufferFieldArguments ( 261 ACPI_OPERAND_OBJECT *ObjDesc) 262{ 263 ACPI_OPERAND_OBJECT *ExtraDesc; 264 ACPI_NAMESPACE_NODE *Node; 265 ACPI_STATUS Status; 266 267 268 ACPI_FUNCTION_TRACE_PTR ("DsGetBufferFieldArguments", ObjDesc); 269 270 271 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 272 { 273 return_ACPI_STATUS (AE_OK); 274 } 275 276 /* Get the AML pointer (method object) and BufferField node */ 277 278 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 279 Node = ObjDesc->BufferField.Node; 280 281 ACPI_DEBUG_EXEC(AcpiUtDisplayInitPathname (ACPI_TYPE_BUFFER_FIELD, Node, NULL)); 282 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", 283 AcpiUtGetNodeName (Node))); 284 285 /* Execute the AML code for the TermArg arguments */ 286 287 Status = AcpiDsExecuteArguments (Node, AcpiNsGetParentNode (Node), 288 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 289 return_ACPI_STATUS (Status); 290} 291 292 293/***************************************************************************** 294 * 295 * FUNCTION: AcpiDsGetBufferArguments 296 * 297 * PARAMETERS: ObjDesc - A valid Buffer object 298 * 299 * RETURN: Status. 300 * 301 * DESCRIPTION: Get Buffer length and initializer byte list. This implements 302 * the late evaluation of these attributes. 303 * 304 ****************************************************************************/ 305 306ACPI_STATUS 307AcpiDsGetBufferArguments ( 308 ACPI_OPERAND_OBJECT *ObjDesc) 309{ 310 ACPI_NAMESPACE_NODE *Node; 311 ACPI_STATUS Status; 312 313 314 ACPI_FUNCTION_TRACE_PTR ("DsGetBufferArguments", ObjDesc); 315 316 317 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 318 { 319 return_ACPI_STATUS (AE_OK); 320 } 321 322 /* Get the Buffer node */ 323 324 Node = ObjDesc->Buffer.Node; 325 if (!Node) 326 { 327 ACPI_REPORT_ERROR (( 328 "No pointer back to NS node in buffer obj %p\n", ObjDesc)); 329 return_ACPI_STATUS (AE_AML_INTERNAL); 330 } 331 332 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n")); 333 334 /* Execute the AML code for the TermArg arguments */ 335 336 Status = AcpiDsExecuteArguments (Node, Node, 337 ObjDesc->Buffer.AmlLength, ObjDesc->Buffer.AmlStart); 338 return_ACPI_STATUS (Status); 339} 340 341 342/***************************************************************************** 343 * 344 * FUNCTION: AcpiDsGetPackageArguments 345 * 346 * PARAMETERS: ObjDesc - A valid Package object 347 * 348 * RETURN: Status. 349 * 350 * DESCRIPTION: Get Package length and initializer byte list. This implements 351 * the late evaluation of these attributes. 352 * 353 ****************************************************************************/ 354 355ACPI_STATUS 356AcpiDsGetPackageArguments ( 357 ACPI_OPERAND_OBJECT *ObjDesc) 358{ 359 ACPI_NAMESPACE_NODE *Node; 360 ACPI_STATUS Status; 361 362 363 ACPI_FUNCTION_TRACE_PTR ("DsGetPackageArguments", ObjDesc); 364 365 366 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 367 { 368 return_ACPI_STATUS (AE_OK); 369 } 370 371 /* Get the Package node */ 372 373 Node = ObjDesc->Package.Node; 374 if (!Node) 375 { 376 ACPI_REPORT_ERROR (( 377 "No pointer back to NS node in package %p\n", ObjDesc)); 378 return_ACPI_STATUS (AE_AML_INTERNAL); 379 } 380 381 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n")); 382 383 /* Execute the AML code for the TermArg arguments */ 384 385 Status = AcpiDsExecuteArguments (Node, Node, 386 ObjDesc->Package.AmlLength, ObjDesc->Package.AmlStart); 387 return_ACPI_STATUS (Status); 388} 389 390 391/***************************************************************************** 392 * 393 * FUNCTION: AcpiDsGetRegionArguments 394 * 395 * PARAMETERS: ObjDesc - A valid region object 396 * 397 * RETURN: Status. 398 * 399 * DESCRIPTION: Get region address and length. This implements the late 400 * evaluation of these region attributes. 401 * 402 ****************************************************************************/ 403 404ACPI_STATUS 405AcpiDsGetRegionArguments ( 406 ACPI_OPERAND_OBJECT *ObjDesc) 407{ 408 ACPI_NAMESPACE_NODE *Node; 409 ACPI_STATUS Status; 410 ACPI_OPERAND_OBJECT *ExtraDesc; 411 412 413 ACPI_FUNCTION_TRACE_PTR ("DsGetRegionArguments", ObjDesc); 414 415 416 if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID) 417 { 418 return_ACPI_STATUS (AE_OK); 419 } 420 421 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc); 422 if (!ExtraDesc) 423 { 424 return_ACPI_STATUS (AE_NOT_EXIST); 425 } 426 427 /* Get the Region node */ 428 429 Node = ObjDesc->Region.Node; 430 431 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_REGION, Node, NULL)); 432 433 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", 434 AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart)); 435 436 /* Execute the argument AML */ 437 438 Status = AcpiDsExecuteArguments (Node, AcpiNsGetParentNode (Node), 439 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart); 440 return_ACPI_STATUS (Status); 441} 442 443 444/***************************************************************************** 445 * 446 * FUNCTION: AcpiDsInitializeRegion 447 * 448 * PARAMETERS: Op - A valid region Op object 449 * 450 * RETURN: Status 451 * 452 * DESCRIPTION: Front end to EvInitializeRegion 453 * 454 ****************************************************************************/ 455 456ACPI_STATUS 457AcpiDsInitializeRegion ( 458 ACPI_HANDLE ObjHandle) 459{ 460 ACPI_OPERAND_OBJECT *ObjDesc; 461 ACPI_STATUS Status; 462 463 464 ObjDesc = AcpiNsGetAttachedObject (ObjHandle); 465 466 /* Namespace is NOT locked */ 467 468 Status = AcpiEvInitializeRegion (ObjDesc, FALSE); 469 return (Status); 470} 471 472 473/***************************************************************************** 474 * 475 * FUNCTION: AcpiDsInitBufferField 476 * 477 * PARAMETERS: AmlOpcode - CreateXxxField 478 * ObjDesc - BufferField object 479 * BufferDesc - Host Buffer 480 * OffsetDesc - Offset into buffer 481 * Length - Length of field (CREATE_FIELD_OP only) 482 * Result - Where to store the result 483 * 484 * RETURN: Status 485 * 486 * DESCRIPTION: Perform actual initialization of a buffer field 487 * 488 ****************************************************************************/ 489 490ACPI_STATUS 491AcpiDsInitBufferField ( 492 UINT16 AmlOpcode, 493 ACPI_OPERAND_OBJECT *ObjDesc, 494 ACPI_OPERAND_OBJECT *BufferDesc, 495 ACPI_OPERAND_OBJECT *OffsetDesc, 496 ACPI_OPERAND_OBJECT *LengthDesc, 497 ACPI_OPERAND_OBJECT *ResultDesc) 498{ 499 UINT32 Offset; 500 UINT32 BitOffset; 501 UINT32 BitCount; 502 UINT8 FieldFlags; 503 ACPI_STATUS Status; 504 505 506 ACPI_FUNCTION_TRACE_PTR ("DsInitBufferField", ObjDesc); 507 508 509 /* Host object must be a Buffer */ 510 511 if (ACPI_GET_OBJECT_TYPE (BufferDesc) != ACPI_TYPE_BUFFER) 512 { 513 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 514 "Target of Create Field is not a Buffer object - %s\n", 515 AcpiUtGetObjectTypeName (BufferDesc))); 516 517 Status = AE_AML_OPERAND_TYPE; 518 goto Cleanup; 519 } 520 521 /* 522 * The last parameter to all of these opcodes (ResultDesc) started 523 * out as a NameString, and should therefore now be a NS node 524 * after resolution in AcpiExResolveOperands(). 525 */ 526 if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED) 527 { 528 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) destination not a NS Node [%s]\n", 529 AcpiPsGetOpcodeName (AmlOpcode), AcpiUtGetDescriptorName (ResultDesc))); 530 531 Status = AE_AML_OPERAND_TYPE; 532 goto Cleanup; 533 } 534 535 Offset = (UINT32) OffsetDesc->Integer.Value; 536 537 /* 538 * Setup the Bit offsets and counts, according to the opcode 539 */ 540 switch (AmlOpcode) 541 { 542 case AML_CREATE_FIELD_OP: 543 544 /* Offset is in bits, count is in bits */ 545 546 BitOffset = Offset; 547 BitCount = (UINT32) LengthDesc->Integer.Value; 548 FieldFlags = AML_FIELD_ACCESS_BYTE; 549 break; 550 551 case AML_CREATE_BIT_FIELD_OP: 552 553 /* Offset is in bits, Field is one bit */ 554 555 BitOffset = Offset; 556 BitCount = 1; 557 FieldFlags = AML_FIELD_ACCESS_BYTE; 558 break; 559 560 case AML_CREATE_BYTE_FIELD_OP: 561 562 /* Offset is in bytes, field is one byte */ 563 564 BitOffset = 8 * Offset; 565 BitCount = 8; 566 FieldFlags = AML_FIELD_ACCESS_BYTE; 567 break; 568 569 case AML_CREATE_WORD_FIELD_OP: 570 571 /* Offset is in bytes, field is one word */ 572 573 BitOffset = 8 * Offset; 574 BitCount = 16; 575 FieldFlags = AML_FIELD_ACCESS_WORD; 576 break; 577 578 case AML_CREATE_DWORD_FIELD_OP: 579 580 /* Offset is in bytes, field is one dword */ 581 582 BitOffset = 8 * Offset; 583 BitCount = 32; 584 FieldFlags = AML_FIELD_ACCESS_DWORD; 585 break; 586 587 case AML_CREATE_QWORD_FIELD_OP: 588 589 /* Offset is in bytes, field is one qword */ 590 591 BitOffset = 8 * Offset; 592 BitCount = 64; 593 FieldFlags = AML_FIELD_ACCESS_QWORD; 594 break; 595 596 default: 597 598 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 599 "Unknown field creation opcode %02x\n", 600 AmlOpcode)); 601 Status = AE_AML_BAD_OPCODE; 602 goto Cleanup; 603 } 604 605 /* Entire field must fit within the current length of the buffer */ 606 607 if ((BitOffset + BitCount) > 608 (8 * (UINT32) BufferDesc->Buffer.Length)) 609 { 610 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 611 "Field [%4.4s] size %d exceeds Buffer [%4.4s] size %d (bits)\n", 612 AcpiUtGetNodeName (ResultDesc), 613 BitOffset + BitCount, 614 AcpiUtGetNodeName (BufferDesc->Buffer.Node), 615 8 * (UINT32) BufferDesc->Buffer.Length)); 616 Status = AE_AML_BUFFER_LIMIT; 617 goto Cleanup; 618 } 619 620 /* 621 * Initialize areas of the field object that are common to all fields 622 * For FieldFlags, use LOCK_RULE = 0 (NO_LOCK), UPDATE_RULE = 0 (UPDATE_PRESERVE) 623 */ 624 Status = AcpiExPrepCommonFieldObject (ObjDesc, FieldFlags, 0, 625 BitOffset, BitCount); 626 if (ACPI_FAILURE (Status)) 627 { 628 goto Cleanup; 629 } 630 631 ObjDesc->BufferField.BufferObj = BufferDesc; 632 633 /* Reference count for BufferDesc inherits ObjDesc count */ 634 635 BufferDesc->Common.ReferenceCount = (UINT16) (BufferDesc->Common.ReferenceCount + 636 ObjDesc->Common.ReferenceCount); 637 638 639Cleanup: 640 641 /* Always delete the operands */ 642 643 AcpiUtRemoveReference (OffsetDesc); 644 AcpiUtRemoveReference (BufferDesc); 645 646 if (AmlOpcode == AML_CREATE_FIELD_OP) 647 { 648 AcpiUtRemoveReference (LengthDesc); 649 } 650 651 /* On failure, delete the result descriptor */ 652 653 if (ACPI_FAILURE (Status)) 654 { 655 AcpiUtRemoveReference (ResultDesc); /* Result descriptor */ 656 } 657 else 658 { 659 /* Now the address and length are valid for this BufferField */ 660 661 ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID; 662 } 663 664 return_ACPI_STATUS (Status); 665} 666 667 668/***************************************************************************** 669 * 670 * FUNCTION: AcpiDsEvalBufferFieldOperands 671 * 672 * PARAMETERS: WalkState - Current walk 673 * Op - A valid BufferField Op object 674 * 675 * RETURN: Status 676 * 677 * DESCRIPTION: Get BufferField Buffer and Index 678 * Called from AcpiDsExecEndOp during BufferField parse tree walk 679 * 680 ****************************************************************************/ 681 682ACPI_STATUS 683AcpiDsEvalBufferFieldOperands ( 684 ACPI_WALK_STATE *WalkState, 685 ACPI_PARSE_OBJECT *Op) 686{ 687 ACPI_STATUS Status; 688 ACPI_OPERAND_OBJECT *ObjDesc; 689 ACPI_NAMESPACE_NODE *Node; 690 ACPI_PARSE_OBJECT *NextOp; 691 692 693 ACPI_FUNCTION_TRACE_PTR ("DsEvalBufferFieldOperands", Op); 694 695 696 /* 697 * This is where we evaluate the address and length fields of the 698 * CreateXxxField declaration 699 */ 700 Node = Op->Common.Node; 701 702 /* NextOp points to the op that holds the Buffer */ 703 704 NextOp = Op->Common.Value.Arg; 705 706 /* Evaluate/create the address and length operands */ 707 708 Status = AcpiDsCreateOperands (WalkState, NextOp); 709 if (ACPI_FAILURE (Status)) 710 { 711 return_ACPI_STATUS (Status); 712 } 713 714 ObjDesc = AcpiNsGetAttachedObject (Node); 715 if (!ObjDesc) 716 { 717 return_ACPI_STATUS (AE_NOT_EXIST); 718 } 719 720 /* Resolve the operands */ 721 722 Status = AcpiExResolveOperands (Op->Common.AmlOpcode, 723 ACPI_WALK_OPERANDS, WalkState); 724 725 ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE, 726 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 727 WalkState->NumOperands, "after AcpiExResolveOperands"); 728 729 if (ACPI_FAILURE (Status)) 730 { 731 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) bad operand(s) (%X)\n", 732 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status)); 733 734 return_ACPI_STATUS (Status); 735 } 736 737 /* Initialize the Buffer Field */ 738 739 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP) 740 { 741 /* NOTE: Slightly different operands for this opcode */ 742 743 Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc, 744 WalkState->Operands[0], WalkState->Operands[1], 745 WalkState->Operands[2], WalkState->Operands[3]); 746 } 747 else 748 { 749 /* All other, CreateXxxField opcodes */ 750 751 Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc, 752 WalkState->Operands[0], WalkState->Operands[1], 753 NULL, WalkState->Operands[2]); 754 } 755 756 return_ACPI_STATUS (Status); 757} 758 759 760/***************************************************************************** 761 * 762 * FUNCTION: AcpiDsEvalRegionOperands 763 * 764 * PARAMETERS: WalkState - Current walk 765 * Op - A valid region Op object 766 * 767 * RETURN: Status 768 * 769 * DESCRIPTION: Get region address and length 770 * Called from AcpiDsExecEndOp during OpRegion parse tree walk 771 * 772 ****************************************************************************/ 773 774ACPI_STATUS 775AcpiDsEvalRegionOperands ( 776 ACPI_WALK_STATE *WalkState, 777 ACPI_PARSE_OBJECT *Op) 778{ 779 ACPI_STATUS Status; 780 ACPI_OPERAND_OBJECT *ObjDesc; 781 ACPI_OPERAND_OBJECT *OperandDesc; 782 ACPI_NAMESPACE_NODE *Node; 783 ACPI_PARSE_OBJECT *NextOp; 784 785 786 ACPI_FUNCTION_TRACE_PTR ("DsEvalRegionOperands", Op); 787 788 789 /* 790 * This is where we evaluate the address and length fields of the OpRegion declaration 791 */ 792 Node = Op->Common.Node; 793 794 /* NextOp points to the op that holds the SpaceID */ 795 796 NextOp = Op->Common.Value.Arg; 797 798 /* NextOp points to address op */ 799 800 NextOp = NextOp->Common.Next; 801 802 /* Evaluate/create the address and length operands */ 803 804 Status = AcpiDsCreateOperands (WalkState, NextOp); 805 if (ACPI_FAILURE (Status)) 806 { 807 return_ACPI_STATUS (Status); 808 } 809 810 /* Resolve the length and address operands to numbers */ 811 812 Status = AcpiExResolveOperands (Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState); 813 if (ACPI_FAILURE (Status)) 814 { 815 return_ACPI_STATUS (Status); 816 } 817 818 ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE, 819 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 820 1, "after AcpiExResolveOperands"); 821 822 ObjDesc = AcpiNsGetAttachedObject (Node); 823 if (!ObjDesc) 824 { 825 return_ACPI_STATUS (AE_NOT_EXIST); 826 } 827 828 /* 829 * Get the length operand and save it 830 * (at Top of stack) 831 */ 832 OperandDesc = WalkState->Operands[WalkState->NumOperands - 1]; 833 834 ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value; 835 AcpiUtRemoveReference (OperandDesc); 836 837 /* 838 * Get the address and save it 839 * (at top of stack - 1) 840 */ 841 OperandDesc = WalkState->Operands[WalkState->NumOperands - 2]; 842 843 ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) OperandDesc->Integer.Value; 844 AcpiUtRemoveReference (OperandDesc); 845 846 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n", 847 ObjDesc, 848 ACPI_FORMAT_UINT64 (ObjDesc->Region.Address), 849 ObjDesc->Region.Length)); 850 851 /* Now the address and length are valid for this opregion */ 852 853 ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID; 854 855 return_ACPI_STATUS (Status); 856} 857 858 859/***************************************************************************** 860 * 861 * FUNCTION: AcpiDsEvalDataObjectOperands 862 * 863 * PARAMETERS: WalkState - Current walk 864 * Op - A valid DataObject Op object 865 * ObjDesc - DataObject 866 * 867 * RETURN: Status 868 * 869 * DESCRIPTION: Get the operands and complete the following data objec types: 870 * Buffer 871 * Package 872 * 873 ****************************************************************************/ 874 875ACPI_STATUS 876AcpiDsEvalDataObjectOperands ( 877 ACPI_WALK_STATE *WalkState, 878 ACPI_PARSE_OBJECT *Op, 879 ACPI_OPERAND_OBJECT *ObjDesc) 880{ 881 ACPI_STATUS Status; 882 ACPI_OPERAND_OBJECT *ArgDesc; 883 UINT32 Length; 884 885 886 ACPI_FUNCTION_TRACE ("DsEvalDataObjectOperands"); 887 888 889 /* The first operand (for all of these data objects) is the length */ 890 891 Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1); 892 if (ACPI_FAILURE (Status)) 893 { 894 return_ACPI_STATUS (Status); 895 } 896 897 Status = AcpiExResolveOperands (WalkState->Opcode, 898 &(WalkState->Operands [WalkState->NumOperands -1]), 899 WalkState); 900 if (ACPI_FAILURE (Status)) 901 { 902 return_ACPI_STATUS (Status); 903 } 904 905 /* Extract length operand */ 906 907 ArgDesc = WalkState->Operands [WalkState->NumOperands - 1]; 908 Length = (UINT32) ArgDesc->Integer.Value; 909 910 /* Cleanup for length operand */ 911 912 Status = AcpiDsObjStackPop (1, WalkState); 913 if (ACPI_FAILURE (Status)) 914 { 915 return_ACPI_STATUS (Status); 916 } 917 918 AcpiUtRemoveReference (ArgDesc); 919 920 /* 921 * Create the actual data object 922 */ 923 switch (Op->Common.AmlOpcode) 924 { 925 case AML_BUFFER_OP: 926 927 Status = AcpiDsBuildInternalBufferObj (WalkState, Op, Length, &ObjDesc); 928 break; 929 930 case AML_PACKAGE_OP: 931 case AML_VAR_PACKAGE_OP: 932 933 Status = AcpiDsBuildInternalPackageObj (WalkState, Op, Length, &ObjDesc); 934 break; 935 936 default: 937 return_ACPI_STATUS (AE_AML_BAD_OPCODE); 938 } 939 940 if (ACPI_SUCCESS (Status)) 941 { 942 /* 943 * Return the object in the WalkState, unless the parent is a package -- 944 * in this case, the return object will be stored in the parse tree 945 * for the package. 946 */ 947 if ((!Op->Common.Parent) || 948 ((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) && 949 (Op->Common.Parent->Common.AmlOpcode != AML_VAR_PACKAGE_OP) && 950 (Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP))) 951 { 952 WalkState->ResultObj = ObjDesc; 953 } 954 } 955 956 return_ACPI_STATUS (Status); 957} 958 959 960/******************************************************************************* 961 * 962 * FUNCTION: AcpiDsExecBeginControlOp 963 * 964 * PARAMETERS: WalkList - The list that owns the walk stack 965 * Op - The control Op 966 * 967 * RETURN: Status 968 * 969 * DESCRIPTION: Handles all control ops encountered during control method 970 * execution. 971 * 972 ******************************************************************************/ 973 974ACPI_STATUS 975AcpiDsExecBeginControlOp ( 976 ACPI_WALK_STATE *WalkState, 977 ACPI_PARSE_OBJECT *Op) 978{ 979 ACPI_STATUS Status = AE_OK; 980 ACPI_GENERIC_STATE *ControlState; 981 982 983 ACPI_FUNCTION_NAME ("DsExecBeginControlOp"); 984 985 986 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", Op, 987 Op->Common.AmlOpcode, WalkState)); 988 989 switch (Op->Common.AmlOpcode) 990 { 991 case AML_IF_OP: 992 case AML_WHILE_OP: 993 994 /* 995 * IF/WHILE: Create a new control state to manage these 996 * constructs. We need to manage these as a stack, in order 997 * to handle nesting. 998 */ 999 ControlState = AcpiUtCreateControlState (); 1000 if (!ControlState) 1001 { 1002 Status = AE_NO_MEMORY; 1003 break; 1004 } 1005 /* 1006 * Save a pointer to the predicate for multiple executions 1007 * of a loop 1008 */ 1009 ControlState->Control.AmlPredicateStart = WalkState->ParserState.Aml - 1; 1010 ControlState->Control.PackageEnd = WalkState->ParserState.PkgEnd; 1011 ControlState->Control.Opcode = Op->Common.AmlOpcode; 1012 1013 1014 /* Push the control state on this walk's control stack */ 1015 1016 AcpiUtPushGenericState (&WalkState->ControlState, ControlState); 1017 break; 1018 1019 case AML_ELSE_OP: 1020 1021 /* Predicate is in the state object */ 1022 /* If predicate is true, the IF was executed, ignore ELSE part */ 1023 1024 if (WalkState->LastPredicate) 1025 { 1026 Status = AE_CTRL_TRUE; 1027 } 1028 1029 break; 1030 1031 case AML_RETURN_OP: 1032 1033 break; 1034 1035 default: 1036 break; 1037 } 1038 1039 return (Status); 1040} 1041 1042 1043/******************************************************************************* 1044 * 1045 * FUNCTION: AcpiDsExecEndControlOp 1046 * 1047 * PARAMETERS: WalkList - The list that owns the walk stack 1048 * Op - The control Op 1049 * 1050 * RETURN: Status 1051 * 1052 * DESCRIPTION: Handles all control ops encountered during control method 1053 * execution. 1054 * 1055 ******************************************************************************/ 1056 1057ACPI_STATUS 1058AcpiDsExecEndControlOp ( 1059 ACPI_WALK_STATE *WalkState, 1060 ACPI_PARSE_OBJECT *Op) 1061{ 1062 ACPI_STATUS Status = AE_OK; 1063 ACPI_GENERIC_STATE *ControlState; 1064 1065 1066 ACPI_FUNCTION_NAME ("DsExecEndControlOp"); 1067 1068 1069 switch (Op->Common.AmlOpcode) 1070 { 1071 case AML_IF_OP: 1072 1073 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", Op)); 1074 1075 /* 1076 * Save the result of the predicate in case there is an 1077 * ELSE to come 1078 */ 1079 WalkState->LastPredicate = 1080 (BOOLEAN) WalkState->ControlState->Common.Value; 1081 1082 /* 1083 * Pop the control state that was created at the start 1084 * of the IF and free it 1085 */ 1086 ControlState = AcpiUtPopGenericState (&WalkState->ControlState); 1087 AcpiUtDeleteGenericState (ControlState); 1088 break; 1089 1090 1091 case AML_ELSE_OP: 1092 1093 break; 1094 1095 1096 case AML_WHILE_OP: 1097 1098 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", Op)); 1099 1100 if (WalkState->ControlState->Common.Value) 1101 { 1102 /* Predicate was true, go back and evaluate it again! */ 1103 1104 Status = AE_CTRL_PENDING; 1105 } 1106 1107 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] termination! Op=%p\n", Op)); 1108 1109 /* Pop this control state and free it */ 1110 1111 ControlState = AcpiUtPopGenericState (&WalkState->ControlState); 1112 1113 WalkState->AmlLastWhile = ControlState->Control.AmlPredicateStart; 1114 AcpiUtDeleteGenericState (ControlState); 1115 break; 1116 1117 1118 case AML_RETURN_OP: 1119 1120 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1121 "[RETURN_OP] Op=%p Arg=%p\n",Op, Op->Common.Value.Arg)); 1122 1123 /* 1124 * One optional operand -- the return value 1125 * It can be either an immediate operand or a result that 1126 * has been bubbled up the tree 1127 */ 1128 if (Op->Common.Value.Arg) 1129 { 1130 /* Return statement has an immediate operand */ 1131 1132 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 1133 if (ACPI_FAILURE (Status)) 1134 { 1135 return (Status); 1136 } 1137 1138 /* 1139 * If value being returned is a Reference (such as 1140 * an arg or local), resolve it now because it may 1141 * cease to exist at the end of the method. 1142 */ 1143 Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState); 1144 if (ACPI_FAILURE (Status)) 1145 { 1146 return (Status); 1147 } 1148 1149 /* 1150 * Get the return value and save as the last result 1151 * value. This is the only place where WalkState->ReturnDesc 1152 * is set to anything other than zero! 1153 */ 1154 WalkState->ReturnDesc = WalkState->Operands[0]; 1155 } 1156 else if ((WalkState->Results) && 1157 (WalkState->Results->Results.NumResults > 0)) 1158 { 1159 /* 1160 * The return value has come from a previous calculation. 1161 * 1162 * If value being returned is a Reference (such as 1163 * an arg or local), resolve it now because it may 1164 * cease to exist at the end of the method. 1165 * 1166 * Allow references created by the Index operator to return unchanged. 1167 */ 1168 if ((ACPI_GET_DESCRIPTOR_TYPE (WalkState->Results->Results.ObjDesc[0]) == ACPI_DESC_TYPE_OPERAND) && 1169 (ACPI_GET_OBJECT_TYPE (WalkState->Results->Results.ObjDesc [0]) == ACPI_TYPE_LOCAL_REFERENCE) && 1170 ((WalkState->Results->Results.ObjDesc [0])->Reference.Opcode != AML_INDEX_OP)) 1171 { 1172 Status = AcpiExResolveToValue (&WalkState->Results->Results.ObjDesc [0], WalkState); 1173 if (ACPI_FAILURE (Status)) 1174 { 1175 return (Status); 1176 } 1177 } 1178 1179 WalkState->ReturnDesc = WalkState->Results->Results.ObjDesc [0]; 1180 } 1181 else 1182 { 1183 /* No return operand */ 1184 1185 if (WalkState->NumOperands) 1186 { 1187 AcpiUtRemoveReference (WalkState->Operands [0]); 1188 } 1189 1190 WalkState->Operands [0] = NULL; 1191 WalkState->NumOperands = 0; 1192 WalkState->ReturnDesc = NULL; 1193 } 1194 1195 1196 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 1197 "Completed RETURN_OP State=%p, RetVal=%p\n", 1198 WalkState, WalkState->ReturnDesc)); 1199 1200 /* End the control method execution right now */ 1201 1202 Status = AE_CTRL_TERMINATE; 1203 break; 1204 1205 1206 case AML_NOOP_OP: 1207 1208 /* Just do nothing! */ 1209 break; 1210 1211 1212 case AML_BREAK_POINT_OP: 1213 1214 /* Call up to the OS service layer to handle this */ 1215 1216 Status = AcpiOsSignal (ACPI_SIGNAL_BREAKPOINT, "Executed AML Breakpoint opcode"); 1217 1218 /* If and when it returns, all done. */ 1219 1220 break; 1221 1222 1223 case AML_BREAK_OP: 1224 case AML_CONTINUE_OP: /* ACPI 2.0 */ 1225 1226 1227 /* Pop and delete control states until we find a while */ 1228 1229 while (WalkState->ControlState && 1230 (WalkState->ControlState->Control.Opcode != AML_WHILE_OP)) 1231 { 1232 ControlState = AcpiUtPopGenericState (&WalkState->ControlState); 1233 AcpiUtDeleteGenericState (ControlState); 1234 } 1235 1236 /* No while found? */ 1237 1238 if (!WalkState->ControlState) 1239 { 1240 return (AE_AML_NO_WHILE); 1241 } 1242 1243 /* Was: WalkState->AmlLastWhile = WalkState->ControlState->Control.AmlPredicateStart; */ 1244 1245 WalkState->AmlLastWhile = WalkState->ControlState->Control.PackageEnd; 1246 1247 /* Return status depending on opcode */ 1248 1249 if (Op->Common.AmlOpcode == AML_BREAK_OP) 1250 { 1251 Status = AE_CTRL_BREAK; 1252 } 1253 else 1254 { 1255 Status = AE_CTRL_CONTINUE; 1256 } 1257 break; 1258 1259 1260 default: 1261 1262 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown control opcode=%X Op=%p\n", 1263 Op->Common.AmlOpcode, Op)); 1264 1265 Status = AE_AML_BAD_OPCODE; 1266 break; 1267 } 1268 1269 return (Status); 1270} 1271
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