drivers/bus/acpi/acpica/dispatcher/dsopcode.c

   1 /******************************************************************************
   2  *
   3  * Module Name: dsopcode - Dispatcher support for regions and fields
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2014, 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 #define __DSOPCODE_C__
 117
 118 #include "acpi.h"
 119 #include "accommon.h"
 120 #include "acparser.h"
 121 #include "amlcode.h"
 122 #include "acdispat.h"
 123 #include "acinterp.h"
 124 #include "acnamesp.h"
 125 #include "acevents.h"
 126 #include "actables.h"
 127
 128 #define _COMPONENT          ACPI_DISPATCHER
 129         ACPI_MODULE_NAME    ("dsopcode")
 130
 131 /* Local prototypes */
 132
 133 static ACPI_STATUS
 134 AcpiDsInitBufferField (
 135     UINT16                  AmlOpcode,
 136     ACPI_OPERAND_OBJECT     *ObjDesc,
 137     ACPI_OPERAND_OBJECT     *BufferDesc,
 138     ACPI_OPERAND_OBJECT     *OffsetDesc,
 139     ACPI_OPERAND_OBJECT     *LengthDesc,
 140     ACPI_OPERAND_OBJECT     *ResultDesc);
 141
 142
 143 /*******************************************************************************
 144  *
 145  * FUNCTION:    AcpiDsInitializeRegion
 146  *
 147  * PARAMETERS:  ObjHandle       - Region namespace node
 148  *
 149  * RETURN:      Status
 150  *
 151  * DESCRIPTION: Front end to EvInitializeRegion
 152  *
 153  ******************************************************************************/
 154
 155 ACPI_STATUS
 156 AcpiDsInitializeRegion (
 157     ACPI_HANDLE             ObjHandle)
 158 {
 159     ACPI_OPERAND_OBJECT     *ObjDesc;
 160     ACPI_STATUS             Status;
 161
 162
 163     ObjDesc = AcpiNsGetAttachedObject (ObjHandle);
 164
 165     /* Namespace is NOT locked */
 166
 167     Status = AcpiEvInitializeRegion (ObjDesc, FALSE);
 168     return (Status);
 169 }
 170
 171
 172 /*******************************************************************************
 173  *
 174  * FUNCTION:    AcpiDsInitBufferField
 175  *
 176  * PARAMETERS:  AmlOpcode       - CreateXxxField
 177  *              ObjDesc         - BufferField object
 178  *              BufferDesc      - Host Buffer
 179  *              OffsetDesc      - Offset into buffer
 180  *              LengthDesc      - Length of field (CREATE_FIELD_OP only)
 181  *              ResultDesc      - Where to store the result
 182  *
 183  * RETURN:      Status
 184  *
 185  * DESCRIPTION: Perform actual initialization of a buffer field
 186  *
 187  ******************************************************************************/
 188
 189 static ACPI_STATUS
 190 AcpiDsInitBufferField (
 191     UINT16                  AmlOpcode,
 192     ACPI_OPERAND_OBJECT     *ObjDesc,
 193     ACPI_OPERAND_OBJECT     *BufferDesc,
 194     ACPI_OPERAND_OBJECT     *OffsetDesc,
 195     ACPI_OPERAND_OBJECT     *LengthDesc,
 196     ACPI_OPERAND_OBJECT     *ResultDesc)
 197 {
 198     UINT32                  Offset;
 199     UINT32                  BitOffset;
 200     UINT32                  BitCount;
 201     UINT8                   FieldFlags;
 202     ACPI_STATUS             Status;
 203
 204
 205     ACPI_FUNCTION_TRACE_PTR (DsInitBufferField, ObjDesc);
 206
 207
 208     /* Host object must be a Buffer */
 209
 210     if (BufferDesc->Common.Type != ACPI_TYPE_BUFFER)
 211     {
 212         ACPI_ERROR ((AE_INFO,
 213             "Target of Create Field is not a Buffer object - %s",
 214             AcpiUtGetObjectTypeName (BufferDesc)));
 215
 216         Status = AE_AML_OPERAND_TYPE;
 217         goto Cleanup;
 218     }
 219
 220     /*
 221      * The last parameter to all of these opcodes (ResultDesc) started
 222      * out as a NameString, and should therefore now be a NS node
 223      * after resolution in AcpiExResolveOperands().
 224      */
 225     if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED)
 226     {
 227         ACPI_ERROR ((AE_INFO,
 228             "(%s) destination not a NS Node [%s]",
 229             AcpiPsGetOpcodeName (AmlOpcode),
 230             AcpiUtGetDescriptorName (ResultDesc)));
 231
 232         Status = AE_AML_OPERAND_TYPE;
 233         goto Cleanup;
 234     }
 235
 236     Offset = (UINT32) OffsetDesc->Integer.Value;
 237
 238     /*
 239      * Setup the Bit offsets and counts, according to the opcode
 240      */
 241     switch (AmlOpcode)
 242     {
 243     case AML_CREATE_FIELD_OP:
 244
 245         /* Offset is in bits, count is in bits */
 246
 247         FieldFlags = AML_FIELD_ACCESS_BYTE;
 248         BitOffset  = Offset;
 249         BitCount   = (UINT32) LengthDesc->Integer.Value;
 250
 251         /* Must have a valid (>0) bit count */
 252
 253         if (BitCount == 0)
 254         {
 255             ACPI_ERROR ((AE_INFO,
 256                 "Attempt to CreateField of length zero"));
 257             Status = AE_AML_OPERAND_VALUE;
 258             goto Cleanup;
 259         }
 260         break;
 261
 262     case AML_CREATE_BIT_FIELD_OP:
 263
 264         /* Offset is in bits, Field is one bit */
 265
 266         BitOffset  = Offset;
 267         BitCount   = 1;
 268         FieldFlags = AML_FIELD_ACCESS_BYTE;
 269         break;
 270
 271     case AML_CREATE_BYTE_FIELD_OP:
 272
 273         /* Offset is in bytes, field is one byte */
 274
 275         BitOffset  = 8 * Offset;
 276         BitCount   = 8;
 277         FieldFlags = AML_FIELD_ACCESS_BYTE;
 278         break;
 279
 280     case AML_CREATE_WORD_FIELD_OP:
 281
 282         /* Offset is in bytes, field is one word */
 283
 284         BitOffset  = 8 * Offset;
 285         BitCount   = 16;
 286         FieldFlags = AML_FIELD_ACCESS_WORD;
 287         break;
 288
 289     case AML_CREATE_DWORD_FIELD_OP:
 290
 291         /* Offset is in bytes, field is one dword */
 292
 293         BitOffset  = 8 * Offset;
 294         BitCount   = 32;
 295         FieldFlags = AML_FIELD_ACCESS_DWORD;
 296         break;
 297
 298     case AML_CREATE_QWORD_FIELD_OP:
 299
 300         /* Offset is in bytes, field is one qword */
 301
 302         BitOffset  = 8 * Offset;
 303         BitCount   = 64;
 304         FieldFlags = AML_FIELD_ACCESS_QWORD;
 305         break;
 306
 307     default:
 308
 309         ACPI_ERROR ((AE_INFO,
 310             "Unknown field creation opcode 0x%02X",
 311             AmlOpcode));
 312         Status = AE_AML_BAD_OPCODE;
 313         goto Cleanup;
 314     }
 315
 316     /* Entire field must fit within the current length of the buffer */
 317
 318     if ((BitOffset + BitCount) >
 319         (8 * (UINT32) BufferDesc->Buffer.Length))
 320     {
 321         ACPI_ERROR ((AE_INFO,
 322             "Field [%4.4s] at %u exceeds Buffer [%4.4s] size %u (bits)",
 323             AcpiUtGetNodeName (ResultDesc),
 324             BitOffset + BitCount,
 325             AcpiUtGetNodeName (BufferDesc->Buffer.Node),
 326             8 * (UINT32) BufferDesc->Buffer.Length));
 327         Status = AE_AML_BUFFER_LIMIT;
 328         goto Cleanup;
 329     }
 330
 331     /*
 332      * Initialize areas of the field object that are common to all fields
 333      * For FieldFlags, use LOCK_RULE = 0 (NO_LOCK),
 334      * UPDATE_RULE = 0 (UPDATE_PRESERVE)
 335      */
 336     Status = AcpiExPrepCommonFieldObject (ObjDesc, FieldFlags, 0,
 337                                             BitOffset, BitCount);
 338     if (ACPI_FAILURE (Status))
 339     {
 340         goto Cleanup;
 341     }
 342
 343     ObjDesc->BufferField.BufferObj = BufferDesc;
 344
 345     /* Reference count for BufferDesc inherits ObjDesc count */
 346
 347     BufferDesc->Common.ReferenceCount = (UINT16)
 348         (BufferDesc->Common.ReferenceCount + ObjDesc->Common.ReferenceCount);
 349
 350
 351 Cleanup:
 352
 353     /* Always delete the operands */
 354
 355     AcpiUtRemoveReference (OffsetDesc);
 356     AcpiUtRemoveReference (BufferDesc);
 357
 358     if (AmlOpcode == AML_CREATE_FIELD_OP)
 359     {
 360         AcpiUtRemoveReference (LengthDesc);
 361     }
 362
 363     /* On failure, delete the result descriptor */
 364
 365     if (ACPI_FAILURE (Status))
 366     {
 367         AcpiUtRemoveReference (ResultDesc);     /* Result descriptor */
 368     }
 369     else
 370     {
 371         /* Now the address and length are valid for this BufferField */
 372
 373         ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID;
 374     }
 375
 376     return_ACPI_STATUS (Status);
 377 }
 378
 379
 380 /*******************************************************************************
 381  *
 382  * FUNCTION:    AcpiDsEvalBufferFieldOperands
 383  *
 384  * PARAMETERS:  WalkState       - Current walk
 385  *              Op              - A valid BufferField Op object
 386  *
 387  * RETURN:      Status
 388  *
 389  * DESCRIPTION: Get BufferField Buffer and Index
 390  *              Called from AcpiDsExecEndOp during BufferField parse tree walk
 391  *
 392  ******************************************************************************/
 393
 394 ACPI_STATUS
 395 AcpiDsEvalBufferFieldOperands (
 396     ACPI_WALK_STATE         *WalkState,
 397     ACPI_PARSE_OBJECT       *Op)
 398 {
 399     ACPI_STATUS             Status;
 400     ACPI_OPERAND_OBJECT     *ObjDesc;
 401     ACPI_NAMESPACE_NODE     *Node;
 402     ACPI_PARSE_OBJECT       *NextOp;
 403
 404
 405     ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op);
 406
 407
 408     /*
 409      * This is where we evaluate the address and length fields of the
 410      * CreateXxxField declaration
 411      */
 412     Node =  Op->Common.Node;
 413
 414     /* NextOp points to the op that holds the Buffer */
 415
 416     NextOp = Op->Common.Value.Arg;
 417
 418     /* Evaluate/create the address and length operands */
 419
 420     Status = AcpiDsCreateOperands (WalkState, NextOp);
 421     if (ACPI_FAILURE (Status))
 422     {
 423         return_ACPI_STATUS (Status);
 424     }
 425
 426     ObjDesc = AcpiNsGetAttachedObject (Node);
 427     if (!ObjDesc)
 428     {
 429         return_ACPI_STATUS (AE_NOT_EXIST);
 430     }
 431
 432     /* Resolve the operands */
 433
 434     Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
 435                     ACPI_WALK_OPERANDS, WalkState);
 436     if (ACPI_FAILURE (Status))
 437     {
 438         ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X",
 439             AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status));
 440
 441         return_ACPI_STATUS (Status);
 442     }
 443
 444     /* Initialize the Buffer Field */
 445
 446     if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
 447     {
 448         /* NOTE: Slightly different operands for this opcode */
 449
 450         Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
 451                     WalkState->Operands[0], WalkState->Operands[1],
 452                     WalkState->Operands[2], WalkState->Operands[3]);
 453     }
 454     else
 455     {
 456         /* All other, CreateXxxField opcodes */
 457
 458         Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
 459                     WalkState->Operands[0], WalkState->Operands[1],
 460                                       NULL, WalkState->Operands[2]);
 461     }
 462
 463     return_ACPI_STATUS (Status);
 464 }
 465
 466
 467 /*******************************************************************************
 468  *
 469  * FUNCTION:    AcpiDsEvalRegionOperands
 470  *
 471  * PARAMETERS:  WalkState       - Current walk
 472  *              Op              - A valid region Op object
 473  *
 474  * RETURN:      Status
 475  *
 476  * DESCRIPTION: Get region address and length
 477  *              Called from AcpiDsExecEndOp during OpRegion parse tree walk
 478  *
 479  ******************************************************************************/
 480
 481 ACPI_STATUS
 482 AcpiDsEvalRegionOperands (
 483     ACPI_WALK_STATE         *WalkState,
 484     ACPI_PARSE_OBJECT       *Op)
 485 {
 486     ACPI_STATUS             Status;
 487     ACPI_OPERAND_OBJECT     *ObjDesc;
 488     ACPI_OPERAND_OBJECT     *OperandDesc;
 489     ACPI_NAMESPACE_NODE     *Node;
 490     ACPI_PARSE_OBJECT       *NextOp;
 491
 492
 493     ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);
 494
 495
 496     /*
 497      * This is where we evaluate the address and length fields of the
 498      * OpRegion declaration
 499      */
 500     Node =  Op->Common.Node;
 501
 502     /* NextOp points to the op that holds the SpaceID */
 503
 504     NextOp = Op->Common.Value.Arg;
 505
 506     /* NextOp points to address op */
 507
 508     NextOp = NextOp->Common.Next;
 509
 510     /* Evaluate/create the address and length operands */
 511
 512     Status = AcpiDsCreateOperands (WalkState, NextOp);
 513     if (ACPI_FAILURE (Status))
 514     {
 515         return_ACPI_STATUS (Status);
 516     }
 517
 518     /* Resolve the length and address operands to numbers */
 519
 520     Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
 521                 ACPI_WALK_OPERANDS, WalkState);
 522     if (ACPI_FAILURE (Status))
 523     {
 524         return_ACPI_STATUS (Status);
 525     }
 526
 527     ObjDesc = AcpiNsGetAttachedObject (Node);
 528     if (!ObjDesc)
 529     {
 530         return_ACPI_STATUS (AE_NOT_EXIST);
 531     }
 532
 533     /*
 534      * Get the length operand and save it
 535      * (at Top of stack)
 536      */
 537     OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];
 538
 539     ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
 540     AcpiUtRemoveReference (OperandDesc);
 541
 542     /*
 543      * Get the address and save it
 544      * (at top of stack - 1)
 545      */
 546     OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];
 547
 548     ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
 549                                 OperandDesc->Integer.Value;
 550     AcpiUtRemoveReference (OperandDesc);
 551
 552     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
 553         ObjDesc,
 554         ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
 555         ObjDesc->Region.Length));
 556
 557     /* Now the address and length are valid for this opregion */
 558
 559     ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
 560
 561     return_ACPI_STATUS (Status);
 562 }
 563
 564
 565 /*******************************************************************************
 566  *
 567  * FUNCTION:    AcpiDsEvalTableRegionOperands
 568  *
 569  * PARAMETERS:  WalkState       - Current walk
 570  *              Op              - A valid region Op object
 571  *
 572  * RETURN:      Status
 573  *
 574  * DESCRIPTION: Get region address and length.
 575  *              Called from AcpiDsExecEndOp during DataTableRegion parse
 576  *              tree walk.
 577  *
 578  ******************************************************************************/
 579
 580 ACPI_STATUS
 581 AcpiDsEvalTableRegionOperands (
 582     ACPI_WALK_STATE         *WalkState,
 583     ACPI_PARSE_OBJECT       *Op)
 584 {
 585     ACPI_STATUS             Status;
 586     ACPI_OPERAND_OBJECT     *ObjDesc;
 587     ACPI_OPERAND_OBJECT     **Operand;
 588     ACPI_NAMESPACE_NODE     *Node;
 589     ACPI_PARSE_OBJECT       *NextOp;
 590     UINT32                  TableIndex;
 591     ACPI_TABLE_HEADER       *Table;
 592
 593
 594     ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
 595
 596
 597     /*
 598      * This is where we evaluate the Signature string, OemId string,
 599      * and OemTableId string of the Data Table Region declaration
 600      */
 601     Node =  Op->Common.Node;
 602
 603     /* NextOp points to Signature string op */
 604
 605     NextOp = Op->Common.Value.Arg;
 606
 607     /*
 608      * Evaluate/create the Signature string, OemId string,
 609      * and OemTableId string operands
 610      */
 611     Status = AcpiDsCreateOperands (WalkState, NextOp);
 612     if (ACPI_FAILURE (Status))
 613     {
 614         return_ACPI_STATUS (Status);
 615     }
 616
 617     /*
 618      * Resolve the Signature string, OemId string,
 619      * and OemTableId string operands
 620      */
 621     Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
 622                 ACPI_WALK_OPERANDS, WalkState);
 623     if (ACPI_FAILURE (Status))
 624     {
 625         return_ACPI_STATUS (Status);
 626     }
 627
 628     Operand = &WalkState->Operands[0];
 629
 630     /* Find the ACPI table */
 631
 632     Status = AcpiTbFindTable (Operand[0]->String.Pointer,
 633                 Operand[1]->String.Pointer, Operand[2]->String.Pointer,
 634                 &TableIndex);
 635     if (ACPI_FAILURE (Status))
 636     {
 637         return_ACPI_STATUS (Status);
 638     }
 639
 640     AcpiUtRemoveReference (Operand[0]);
 641     AcpiUtRemoveReference (Operand[1]);
 642     AcpiUtRemoveReference (Operand[2]);
 643
 644     Status = AcpiGetTableByIndex (TableIndex, &Table);
 645     if (ACPI_FAILURE (Status))
 646     {
 647         return_ACPI_STATUS (Status);
 648     }
 649
 650     ObjDesc = AcpiNsGetAttachedObject (Node);
 651     if (!ObjDesc)
 652     {
 653         return_ACPI_STATUS (AE_NOT_EXIST);
 654     }
 655
 656     ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) ACPI_TO_INTEGER (Table);
 657     ObjDesc->Region.Length = Table->Length;
 658
 659     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
 660         ObjDesc,
 661         ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
 662         ObjDesc->Region.Length));
 663
 664     /* Now the address and length are valid for this opregion */
 665
 666     ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
 667
 668     return_ACPI_STATUS (Status);
 669 }
 670
 671
 672 /*******************************************************************************
 673  *
 674  * FUNCTION:    AcpiDsEvalDataObjectOperands
 675  *
 676  * PARAMETERS:  WalkState       - Current walk
 677  *              Op              - A valid DataObject Op object
 678  *              ObjDesc         - DataObject
 679  *
 680  * RETURN:      Status
 681  *
 682  * DESCRIPTION: Get the operands and complete the following data object types:
 683  *              Buffer, Package.
 684  *
 685  ******************************************************************************/
 686
 687 ACPI_STATUS
 688 AcpiDsEvalDataObjectOperands (
 689     ACPI_WALK_STATE         *WalkState,
 690     ACPI_PARSE_OBJECT       *Op,
 691     ACPI_OPERAND_OBJECT     *ObjDesc)
 692 {
 693     ACPI_STATUS             Status;
 694     ACPI_OPERAND_OBJECT     *ArgDesc;
 695     UINT32                  Length;
 696
 697
 698     ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands);
 699
 700
 701     /* The first operand (for all of these data objects) is the length */
 702
 703     /*
 704      * Set proper index into operand stack for AcpiDsObjStackPush
 705      * invoked inside AcpiDsCreateOperand.
 706      */
 707     WalkState->OperandIndex = WalkState->NumOperands;
 708
 709     Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1);
 710     if (ACPI_FAILURE (Status))
 711     {
 712         return_ACPI_STATUS (Status);
 713     }
 714
 715     Status = AcpiExResolveOperands (WalkState->Opcode,
 716                     &(WalkState->Operands [WalkState->NumOperands -1]),
 717                     WalkState);
 718     if (ACPI_FAILURE (Status))
 719     {
 720         return_ACPI_STATUS (Status);
 721     }
 722
 723     /* Extract length operand */
 724
 725     ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
 726     Length = (UINT32) ArgDesc->Integer.Value;
 727
 728     /* Cleanup for length operand */
 729
 730     Status = AcpiDsObjStackPop (1, WalkState);
 731     if (ACPI_FAILURE (Status))
 732     {
 733         return_ACPI_STATUS (Status);
 734     }
 735
 736     AcpiUtRemoveReference (ArgDesc);
 737
 738     /*
 739      * Create the actual data object
 740      */
 741     switch (Op->Common.AmlOpcode)
 742     {
 743     case AML_BUFFER_OP:
 744
 745         Status = AcpiDsBuildInternalBufferObj (WalkState, Op, Length, &ObjDesc);
 746         break;
 747
 748     case AML_PACKAGE_OP:
 749     case AML_VAR_PACKAGE_OP:
 750
 751         Status = AcpiDsBuildInternalPackageObj (WalkState, Op, Length, &ObjDesc);
 752         break;
 753
 754     default:
 755
 756         return_ACPI_STATUS (AE_AML_BAD_OPCODE);
 757     }
 758
 759     if (ACPI_SUCCESS (Status))
 760     {
 761         /*
 762          * Return the object in the WalkState, unless the parent is a package -
 763          * in this case, the return object will be stored in the parse tree
 764          * for the package.
 765          */
 766         if ((!Op->Common.Parent) ||
 767             ((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) &&
 768              (Op->Common.Parent->Common.AmlOpcode != AML_VAR_PACKAGE_OP) &&
 769              (Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP)))
 770         {
 771             WalkState->ResultObj = ObjDesc;
 772         }
 773     }
 774
 775     return_ACPI_STATUS (Status);
 776 }
 777
 778
 779 /*******************************************************************************
 780  *
 781  * FUNCTION:    AcpiDsEvalBankFieldOperands
 782  *
 783  * PARAMETERS:  WalkState       - Current walk
 784  *              Op              - A valid BankField Op object
 785  *
 786  * RETURN:      Status
 787  *
 788  * DESCRIPTION: Get BankField BankValue
 789  *              Called from AcpiDsExecEndOp during BankField parse tree walk
 790  *
 791  ******************************************************************************/
 792
 793 ACPI_STATUS
 794 AcpiDsEvalBankFieldOperands (
 795     ACPI_WALK_STATE         *WalkState,
 796     ACPI_PARSE_OBJECT       *Op)
 797 {
 798     ACPI_STATUS             Status;
 799     ACPI_OPERAND_OBJECT     *ObjDesc;
 800     ACPI_OPERAND_OBJECT     *OperandDesc;
 801     ACPI_NAMESPACE_NODE     *Node;
 802     ACPI_PARSE_OBJECT       *NextOp;
 803     ACPI_PARSE_OBJECT       *Arg;
 804
 805
 806     ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op);
 807
 808
 809     /*
 810      * This is where we evaluate the BankValue field of the
 811      * BankField declaration
 812      */
 813
 814     /* NextOp points to the op that holds the Region */
 815
 816     NextOp = Op->Common.Value.Arg;
 817
 818     /* NextOp points to the op that holds the Bank Register */
 819
 820     NextOp = NextOp->Common.Next;
 821
 822     /* NextOp points to the op that holds the Bank Value */
 823
 824     NextOp = NextOp->Common.Next;
 825
 826     /*
 827      * Set proper index into operand stack for AcpiDsObjStackPush
 828      * invoked inside AcpiDsCreateOperand.
 829      *
 830      * We use WalkState->Operands[0] to store the evaluated BankValue
 831      */
 832     WalkState->OperandIndex = 0;
 833
 834     Status = AcpiDsCreateOperand (WalkState, NextOp, 0);
 835     if (ACPI_FAILURE (Status))
 836     {
 837         return_ACPI_STATUS (Status);
 838     }
 839
 840     Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState);
 841     if (ACPI_FAILURE (Status))
 842     {
 843         return_ACPI_STATUS (Status);
 844     }
 845
 846     ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS,
 847         AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1);
 848     /*
 849      * Get the BankValue operand and save it
 850      * (at Top of stack)
 851      */
 852     OperandDesc = WalkState->Operands[0];
 853
 854     /* Arg points to the start Bank Field */
 855
 856     Arg = AcpiPsGetArg (Op, 4);
 857     while (Arg)
 858     {
 859         /* Ignore OFFSET and ACCESSAS terms here */
 860
 861         if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
 862         {
 863             Node = Arg->Common.Node;
 864
 865             ObjDesc = AcpiNsGetAttachedObject (Node);
 866             if (!ObjDesc)
 867             {
 868                 return_ACPI_STATUS (AE_NOT_EXIST);
 869             }
 870
 871             ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value;
 872         }
 873
 874         /* Move to next field in the list */
 875
 876         Arg = Arg->Common.Next;
 877     }
 878
 879     AcpiUtRemoveReference (OperandDesc);
 880     return_ACPI_STATUS (Status);
 881 }