sys/contrib/dev/acpica/source/components/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 - 2018, 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  * Alternatively, you may choose to be licensed under the terms of the
 117  * following license:
 118  *
 119  * Redistribution and use in source and binary forms, with or without
 120  * modification, are permitted provided that the following conditions
 121  * are met:
 122  * 1. Redistributions of source code must retain the above copyright
 123  *    notice, this list of conditions, and the following disclaimer,
 124  *    without modification.
 125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 126  *    substantially similar to the "NO WARRANTY" disclaimer below
 127  *    ("Disclaimer") and any redistribution must be conditioned upon
 128  *    including a substantially similar Disclaimer requirement for further
 129  *    binary redistribution.
 130  * 3. Neither the names of the above-listed copyright holders nor the names
 131  *    of any contributors may be used to endorse or promote products derived
 132  *    from this software without specific prior written permission.
 133  *
 134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 145  *
 146  * Alternatively, you may choose to be licensed under the terms of the
 147  * GNU General Public License ("GPL") version 2 as published by the Free
 148  * Software Foundation.
 149  *
 150  *****************************************************************************/
 151
 152 #include "acpi.h"
 153 #include "accommon.h"
 154 #include "acparser.h"
 155 #include "amlcode.h"
 156 #include "acdispat.h"
 157 #include "acinterp.h"
 158 #include "acnamesp.h"
 159 #include "acevents.h"
 160 #include "actables.h"
 161
 162 #define _COMPONENT          ACPI_DISPATCHER
 163         ACPI_MODULE_NAME    ("dsopcode")
 164
 165 /* Local prototypes */
 166
 167 static ACPI_STATUS
 168 AcpiDsInitBufferField (
 169     UINT16                  AmlOpcode,
 170     ACPI_OPERAND_OBJECT     *ObjDesc,
 171     ACPI_OPERAND_OBJECT     *BufferDesc,
 172     ACPI_OPERAND_OBJECT     *OffsetDesc,
 173     ACPI_OPERAND_OBJECT     *LengthDesc,
 174     ACPI_OPERAND_OBJECT     *ResultDesc);
 175
 176
 177 /*******************************************************************************
 178  *
 179  * FUNCTION:    AcpiDsInitializeRegion
 180  *
 181  * PARAMETERS:  ObjHandle       - Region namespace node
 182  *
 183  * RETURN:      Status
 184  *
 185  * DESCRIPTION: Front end to EvInitializeRegion
 186  *
 187  ******************************************************************************/
 188
 189 ACPI_STATUS
 190 AcpiDsInitializeRegion (
 191     ACPI_HANDLE             ObjHandle)
 192 {
 193     ACPI_OPERAND_OBJECT     *ObjDesc;
 194     ACPI_STATUS             Status;
 195
 196
 197     ObjDesc = AcpiNsGetAttachedObject (ObjHandle);
 198
 199     /* Namespace is NOT locked */
 200
 201     Status = AcpiEvInitializeRegion (ObjDesc);
 202     return (Status);
 203 }
 204
 205
 206 /*******************************************************************************
 207  *
 208  * FUNCTION:    AcpiDsInitBufferField
 209  *
 210  * PARAMETERS:  AmlOpcode       - CreateXxxField
 211  *              ObjDesc         - BufferField object
 212  *              BufferDesc      - Host Buffer
 213  *              OffsetDesc      - Offset into buffer
 214  *              LengthDesc      - Length of field (CREATE_FIELD_OP only)
 215  *              ResultDesc      - Where to store the result
 216  *
 217  * RETURN:      Status
 218  *
 219  * DESCRIPTION: Perform actual initialization of a buffer field
 220  *
 221  ******************************************************************************/
 222
 223 static ACPI_STATUS
 224 AcpiDsInitBufferField (
 225     UINT16                  AmlOpcode,
 226     ACPI_OPERAND_OBJECT     *ObjDesc,
 227     ACPI_OPERAND_OBJECT     *BufferDesc,
 228     ACPI_OPERAND_OBJECT     *OffsetDesc,
 229     ACPI_OPERAND_OBJECT     *LengthDesc,
 230     ACPI_OPERAND_OBJECT     *ResultDesc)
 231 {
 232     UINT32                  Offset;
 233     UINT32                  BitOffset;
 234     UINT32                  BitCount;
 235     UINT8                   FieldFlags;
 236     ACPI_STATUS             Status;
 237
 238
 239     ACPI_FUNCTION_TRACE_PTR (DsInitBufferField, ObjDesc);
 240
 241
 242     /* Host object must be a Buffer */
 243
 244     if (BufferDesc->Common.Type != ACPI_TYPE_BUFFER)
 245     {
 246         ACPI_ERROR ((AE_INFO,
 247             "Target of Create Field is not a Buffer object - %s",
 248             AcpiUtGetObjectTypeName (BufferDesc)));
 249
 250         Status = AE_AML_OPERAND_TYPE;
 251         goto Cleanup;
 252     }
 253
 254     /*
 255      * The last parameter to all of these opcodes (ResultDesc) started
 256      * out as a NameString, and should therefore now be a NS node
 257      * after resolution in AcpiExResolveOperands().
 258      */
 259     if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED)
 260     {
 261         ACPI_ERROR ((AE_INFO,
 262             "(%s) destination not a NS Node [%s]",
 263             AcpiPsGetOpcodeName (AmlOpcode),
 264             AcpiUtGetDescriptorName (ResultDesc)));
 265
 266         Status = AE_AML_OPERAND_TYPE;
 267         goto Cleanup;
 268     }
 269
 270     Offset = (UINT32) OffsetDesc->Integer.Value;
 271
 272     /*
 273      * Setup the Bit offsets and counts, according to the opcode
 274      */
 275     switch (AmlOpcode)
 276     {
 277     case AML_CREATE_FIELD_OP:
 278
 279         /* Offset is in bits, count is in bits */
 280
 281         FieldFlags = AML_FIELD_ACCESS_BYTE;
 282         BitOffset  = Offset;
 283         BitCount   = (UINT32) LengthDesc->Integer.Value;
 284
 285         /* Must have a valid (>0) bit count */
 286
 287         if (BitCount == 0)
 288         {
 289             ACPI_ERROR ((AE_INFO,
 290                 "Attempt to CreateField of length zero"));
 291             Status = AE_AML_OPERAND_VALUE;
 292             goto Cleanup;
 293         }
 294         break;
 295
 296     case AML_CREATE_BIT_FIELD_OP:
 297
 298         /* Offset is in bits, Field is one bit */
 299
 300         BitOffset  = Offset;
 301         BitCount   = 1;
 302         FieldFlags = AML_FIELD_ACCESS_BYTE;
 303         break;
 304
 305     case AML_CREATE_BYTE_FIELD_OP:
 306
 307         /* Offset is in bytes, field is one byte */
 308
 309         BitOffset  = 8 * Offset;
 310         BitCount   = 8;
 311         FieldFlags = AML_FIELD_ACCESS_BYTE;
 312         break;
 313
 314     case AML_CREATE_WORD_FIELD_OP:
 315
 316         /* Offset is in bytes, field is one word */
 317
 318         BitOffset  = 8 * Offset;
 319         BitCount   = 16;
 320         FieldFlags = AML_FIELD_ACCESS_WORD;
 321         break;
 322
 323     case AML_CREATE_DWORD_FIELD_OP:
 324
 325         /* Offset is in bytes, field is one dword */
 326
 327         BitOffset  = 8 * Offset;
 328         BitCount   = 32;
 329         FieldFlags = AML_FIELD_ACCESS_DWORD;
 330         break;
 331
 332     case AML_CREATE_QWORD_FIELD_OP:
 333
 334         /* Offset is in bytes, field is one qword */
 335
 336         BitOffset  = 8 * Offset;
 337         BitCount   = 64;
 338         FieldFlags = AML_FIELD_ACCESS_QWORD;
 339         break;
 340
 341     default:
 342
 343         ACPI_ERROR ((AE_INFO,
 344             "Unknown field creation opcode 0x%02X",
 345             AmlOpcode));
 346         Status = AE_AML_BAD_OPCODE;
 347         goto Cleanup;
 348     }
 349
 350     /* Entire field must fit within the current length of the buffer */
 351
 352     if ((BitOffset + BitCount) >
 353         (8 * (UINT32) BufferDesc->Buffer.Length))
 354     {
 355         ACPI_ERROR ((AE_INFO,
 356             "Field [%4.4s] at bit offset/length %u/%u "
 357             "exceeds size of target Buffer (%u bits)",
 358             AcpiUtGetNodeName (ResultDesc), BitOffset, BitCount,
 359             8 * (UINT32) BufferDesc->Buffer.Length));
 360         Status = AE_AML_BUFFER_LIMIT;
 361         goto Cleanup;
 362     }
 363
 364     /*
 365      * Initialize areas of the field object that are common to all fields
 366      * For FieldFlags, use LOCK_RULE = 0 (NO_LOCK),
 367      * UPDATE_RULE = 0 (UPDATE_PRESERVE)
 368      */
 369     Status = AcpiExPrepCommonFieldObject (
 370         ObjDesc, FieldFlags, 0, BitOffset, BitCount);
 371     if (ACPI_FAILURE (Status))
 372     {
 373         goto Cleanup;
 374     }
 375
 376     ObjDesc->BufferField.BufferObj = BufferDesc;
 377
 378     /* Reference count for BufferDesc inherits ObjDesc count */
 379
 380     BufferDesc->Common.ReferenceCount = (UINT16)
 381         (BufferDesc->Common.ReferenceCount + ObjDesc->Common.ReferenceCount);
 382
 383
 384 Cleanup:
 385
 386     /* Always delete the operands */
 387
 388     AcpiUtRemoveReference (OffsetDesc);
 389     AcpiUtRemoveReference (BufferDesc);
 390
 391     if (AmlOpcode == AML_CREATE_FIELD_OP)
 392     {
 393         AcpiUtRemoveReference (LengthDesc);
 394     }
 395
 396     /* On failure, delete the result descriptor */
 397
 398     if (ACPI_FAILURE (Status))
 399     {
 400         AcpiUtRemoveReference (ResultDesc);     /* Result descriptor */
 401     }
 402     else
 403     {
 404         /* Now the address and length are valid for this BufferField */
 405
 406         ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID;
 407     }
 408
 409     return_ACPI_STATUS (Status);
 410 }
 411
 412
 413 /*******************************************************************************
 414  *
 415  * FUNCTION:    AcpiDsEvalBufferFieldOperands
 416  *
 417  * PARAMETERS:  WalkState       - Current walk
 418  *              Op              - A valid BufferField Op object
 419  *
 420  * RETURN:      Status
 421  *
 422  * DESCRIPTION: Get BufferField Buffer and Index
 423  *              Called from AcpiDsExecEndOp during BufferField parse tree walk
 424  *
 425  ******************************************************************************/
 426
 427 ACPI_STATUS
 428 AcpiDsEvalBufferFieldOperands (
 429     ACPI_WALK_STATE         *WalkState,
 430     ACPI_PARSE_OBJECT       *Op)
 431 {
 432     ACPI_STATUS             Status;
 433     ACPI_OPERAND_OBJECT     *ObjDesc;
 434     ACPI_NAMESPACE_NODE     *Node;
 435     ACPI_PARSE_OBJECT       *NextOp;
 436
 437
 438     ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op);
 439
 440
 441     /*
 442      * This is where we evaluate the address and length fields of the
 443      * CreateXxxField declaration
 444      */
 445     Node =  Op->Common.Node;
 446
 447     /* NextOp points to the op that holds the Buffer */
 448
 449     NextOp = Op->Common.Value.Arg;
 450
 451     /* Evaluate/create the address and length operands */
 452
 453     Status = AcpiDsCreateOperands (WalkState, NextOp);
 454     if (ACPI_FAILURE (Status))
 455     {
 456         return_ACPI_STATUS (Status);
 457     }
 458
 459     ObjDesc = AcpiNsGetAttachedObject (Node);
 460     if (!ObjDesc)
 461     {
 462         return_ACPI_STATUS (AE_NOT_EXIST);
 463     }
 464
 465     /* Resolve the operands */
 466
 467     Status = AcpiExResolveOperands (
 468         Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
 469     if (ACPI_FAILURE (Status))
 470     {
 471         ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X",
 472             AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status));
 473
 474         return_ACPI_STATUS (Status);
 475     }
 476
 477     /* Initialize the Buffer Field */
 478
 479     if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
 480     {
 481         /* NOTE: Slightly different operands for this opcode */
 482
 483         Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
 484             WalkState->Operands[0], WalkState->Operands[1],
 485             WalkState->Operands[2], WalkState->Operands[3]);
 486     }
 487     else
 488     {
 489         /* All other, CreateXxxField opcodes */
 490
 491         Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
 492             WalkState->Operands[0], WalkState->Operands[1],
 493             NULL, WalkState->Operands[2]);
 494     }
 495
 496     return_ACPI_STATUS (Status);
 497 }
 498
 499
 500 /*******************************************************************************
 501  *
 502  * FUNCTION:    AcpiDsEvalRegionOperands
 503  *
 504  * PARAMETERS:  WalkState       - Current walk
 505  *              Op              - A valid region Op object
 506  *
 507  * RETURN:      Status
 508  *
 509  * DESCRIPTION: Get region address and length
 510  *              Called from AcpiDsExecEndOp during OpRegion parse tree walk
 511  *
 512  ******************************************************************************/
 513
 514 ACPI_STATUS
 515 AcpiDsEvalRegionOperands (
 516     ACPI_WALK_STATE         *WalkState,
 517     ACPI_PARSE_OBJECT       *Op)
 518 {
 519     ACPI_STATUS             Status;
 520     ACPI_OPERAND_OBJECT     *ObjDesc;
 521     ACPI_OPERAND_OBJECT     *OperandDesc;
 522     ACPI_NAMESPACE_NODE     *Node;
 523     ACPI_PARSE_OBJECT       *NextOp;
 524
 525
 526     ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);
 527
 528
 529     /*
 530      * This is where we evaluate the address and length fields of the
 531      * OpRegion declaration
 532      */
 533     Node =  Op->Common.Node;
 534
 535     /* NextOp points to the op that holds the SpaceID */
 536
 537     NextOp = Op->Common.Value.Arg;
 538
 539     /* NextOp points to address op */
 540
 541     NextOp = NextOp->Common.Next;
 542
 543     /* Evaluate/create the address and length operands */
 544
 545     Status = AcpiDsCreateOperands (WalkState, NextOp);
 546     if (ACPI_FAILURE (Status))
 547     {
 548         return_ACPI_STATUS (Status);
 549     }
 550
 551     /* Resolve the length and address operands to numbers */
 552
 553     Status = AcpiExResolveOperands (
 554         Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
 555     if (ACPI_FAILURE (Status))
 556     {
 557         return_ACPI_STATUS (Status);
 558     }
 559
 560     ObjDesc = AcpiNsGetAttachedObject (Node);
 561     if (!ObjDesc)
 562     {
 563         return_ACPI_STATUS (AE_NOT_EXIST);
 564     }
 565
 566     /*
 567      * Get the length operand and save it
 568      * (at Top of stack)
 569      */
 570     OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];
 571
 572     ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
 573     AcpiUtRemoveReference (OperandDesc);
 574
 575     /*
 576      * Get the address and save it
 577      * (at top of stack - 1)
 578      */
 579     OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];
 580
 581     ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
 582         OperandDesc->Integer.Value;
 583     AcpiUtRemoveReference (OperandDesc);
 584
 585     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
 586         ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
 587         ObjDesc->Region.Length));
 588
 589     /* Now the address and length are valid for this opregion */
 590
 591     ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
 592     return_ACPI_STATUS (Status);
 593 }
 594
 595
 596 /*******************************************************************************
 597  *
 598  * FUNCTION:    AcpiDsEvalTableRegionOperands
 599  *
 600  * PARAMETERS:  WalkState       - Current walk
 601  *              Op              - A valid region Op object
 602  *
 603  * RETURN:      Status
 604  *
 605  * DESCRIPTION: Get region address and length.
 606  *              Called from AcpiDsExecEndOp during DataTableRegion parse
 607  *              tree walk.
 608  *
 609  ******************************************************************************/
 610
 611 ACPI_STATUS
 612 AcpiDsEvalTableRegionOperands (
 613     ACPI_WALK_STATE         *WalkState,
 614     ACPI_PARSE_OBJECT       *Op)
 615 {
 616     ACPI_STATUS             Status;
 617     ACPI_OPERAND_OBJECT     *ObjDesc;
 618     ACPI_OPERAND_OBJECT     **Operand;
 619     ACPI_NAMESPACE_NODE     *Node;
 620     ACPI_PARSE_OBJECT       *NextOp;
 621     ACPI_TABLE_HEADER       *Table;
 622     UINT32                  TableIndex;
 623
 624
 625     ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
 626
 627
 628     /*
 629      * This is where we evaluate the Signature string, OemId string,
 630      * and OemTableId string of the Data Table Region declaration
 631      */
 632     Node =  Op->Common.Node;
 633
 634     /* NextOp points to Signature string op */
 635
 636     NextOp = Op->Common.Value.Arg;
 637
 638     /*
 639      * Evaluate/create the Signature string, OemId string,
 640      * and OemTableId string operands
 641      */
 642     Status = AcpiDsCreateOperands (WalkState, NextOp);
 643     if (ACPI_FAILURE (Status))
 644     {
 645         return_ACPI_STATUS (Status);
 646     }
 647
 648     Operand = &WalkState->Operands[0];
 649
 650     /*
 651      * Resolve the Signature string, OemId string,
 652      * and OemTableId string operands
 653      */
 654     Status = AcpiExResolveOperands (
 655         Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
 656     if (ACPI_FAILURE (Status))
 657     {
 658         goto Cleanup;
 659     }
 660
 661     /* Find the ACPI table */
 662
 663     Status = AcpiTbFindTable (
 664         Operand[0]->String.Pointer,
 665         Operand[1]->String.Pointer,
 666         Operand[2]->String.Pointer, &TableIndex);
 667     if (ACPI_FAILURE (Status))
 668     {
 669         if (Status == AE_NOT_FOUND)
 670         {
 671             ACPI_ERROR ((AE_INFO,
 672                 "ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
 673                 Operand[0]->String.Pointer,
 674                 Operand[1]->String.Pointer,
 675                 Operand[2]->String.Pointer));
 676         }
 677         goto Cleanup;
 678     }
 679
 680     Status = AcpiGetTableByIndex (TableIndex, &Table);
 681     if (ACPI_FAILURE (Status))
 682     {
 683         goto Cleanup;
 684     }
 685
 686     ObjDesc = AcpiNsGetAttachedObject (Node);
 687     if (!ObjDesc)
 688     {
 689         Status = AE_NOT_EXIST;
 690         goto Cleanup;
 691     }
 692
 693     ObjDesc->Region.Address = ACPI_PTR_TO_PHYSADDR (Table);
 694     ObjDesc->Region.Length = Table->Length;
 695
 696     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
 697         ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
 698         ObjDesc->Region.Length));
 699
 700     /* Now the address and length are valid for this opregion */
 701
 702     ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
 703
 704 Cleanup:
 705     AcpiUtRemoveReference (Operand[0]);
 706     AcpiUtRemoveReference (Operand[1]);
 707     AcpiUtRemoveReference (Operand[2]);
 708
 709     return_ACPI_STATUS (Status);
 710 }
 711
 712
 713 /*******************************************************************************
 714  *
 715  * FUNCTION:    AcpiDsEvalDataObjectOperands
 716  *
 717  * PARAMETERS:  WalkState       - Current walk
 718  *              Op              - A valid DataObject Op object
 719  *              ObjDesc         - DataObject
 720  *
 721  * RETURN:      Status
 722  *
 723  * DESCRIPTION: Get the operands and complete the following data object types:
 724  *              Buffer, Package.
 725  *
 726  ******************************************************************************/
 727
 728 ACPI_STATUS
 729 AcpiDsEvalDataObjectOperands (
 730     ACPI_WALK_STATE         *WalkState,
 731     ACPI_PARSE_OBJECT       *Op,
 732     ACPI_OPERAND_OBJECT     *ObjDesc)
 733 {
 734     ACPI_STATUS             Status;
 735     ACPI_OPERAND_OBJECT     *ArgDesc;
 736     UINT32                  Length;
 737
 738
 739     ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands);
 740
 741
 742     /* The first operand (for all of these data objects) is the length */
 743
 744     /*
 745      * Set proper index into operand stack for AcpiDsObjStackPush
 746      * invoked inside AcpiDsCreateOperand.
 747      */
 748     WalkState->OperandIndex = WalkState->NumOperands;
 749
 750     /* Ignore if child is not valid */
 751
 752     if (!Op->Common.Value.Arg)
 753     {
 754         ACPI_ERROR ((AE_INFO,
 755             "Missing child while evaluating opcode %4.4X, Op %p",
 756             Op->Common.AmlOpcode, Op));
 757         return_ACPI_STATUS (AE_OK);
 758     }
 759
 760     Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1);
 761     if (ACPI_FAILURE (Status))
 762     {
 763         return_ACPI_STATUS (Status);
 764     }
 765
 766     Status = AcpiExResolveOperands (WalkState->Opcode,
 767         &(WalkState->Operands [WalkState->NumOperands -1]),
 768         WalkState);
 769     if (ACPI_FAILURE (Status))
 770     {
 771         return_ACPI_STATUS (Status);
 772     }
 773
 774     /* Extract length operand */
 775
 776     ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
 777     Length = (UINT32) ArgDesc->Integer.Value;
 778
 779     /* Cleanup for length operand */
 780
 781     Status = AcpiDsObjStackPop (1, WalkState);
 782     if (ACPI_FAILURE (Status))
 783     {
 784         return_ACPI_STATUS (Status);
 785     }
 786
 787     AcpiUtRemoveReference (ArgDesc);
 788
 789     /*
 790      * Create the actual data object
 791      */
 792     switch (Op->Common.AmlOpcode)
 793     {
 794     case AML_BUFFER_OP:
 795
 796         Status = AcpiDsBuildInternalBufferObj (
 797             WalkState, Op, Length, &ObjDesc);
 798         break;
 799
 800     case AML_PACKAGE_OP:
 801     case AML_VARIABLE_PACKAGE_OP:
 802
 803         Status = AcpiDsBuildInternalPackageObj (
 804             WalkState, Op, Length, &ObjDesc);
 805         break;
 806
 807     default:
 808
 809         return_ACPI_STATUS (AE_AML_BAD_OPCODE);
 810     }
 811
 812     if (ACPI_SUCCESS (Status))
 813     {
 814         /*
 815          * Return the object in the WalkState, unless the parent is a package -
 816          * in this case, the return object will be stored in the parse tree
 817          * for the package.
 818          */
 819         if ((!Op->Common.Parent) ||
 820             ((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) &&
 821              (Op->Common.Parent->Common.AmlOpcode != AML_VARIABLE_PACKAGE_OP) &&
 822              (Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP)))
 823         {
 824             WalkState->ResultObj = ObjDesc;
 825         }
 826     }
 827
 828     return_ACPI_STATUS (Status);
 829 }
 830
 831
 832 /*******************************************************************************
 833  *
 834  * FUNCTION:    AcpiDsEvalBankFieldOperands
 835  *
 836  * PARAMETERS:  WalkState       - Current walk
 837  *              Op              - A valid BankField Op object
 838  *
 839  * RETURN:      Status
 840  *
 841  * DESCRIPTION: Get BankField BankValue
 842  *              Called from AcpiDsExecEndOp during BankField parse tree walk
 843  *
 844  ******************************************************************************/
 845
 846 ACPI_STATUS
 847 AcpiDsEvalBankFieldOperands (
 848     ACPI_WALK_STATE         *WalkState,
 849     ACPI_PARSE_OBJECT       *Op)
 850 {
 851     ACPI_STATUS             Status;
 852     ACPI_OPERAND_OBJECT     *ObjDesc;
 853     ACPI_OPERAND_OBJECT     *OperandDesc;
 854     ACPI_NAMESPACE_NODE     *Node;
 855     ACPI_PARSE_OBJECT       *NextOp;
 856     ACPI_PARSE_OBJECT       *Arg;
 857
 858
 859     ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op);
 860
 861
 862     /*
 863      * This is where we evaluate the BankValue field of the
 864      * BankField declaration
 865      */
 866
 867     /* NextOp points to the op that holds the Region */
 868
 869     NextOp = Op->Common.Value.Arg;
 870
 871     /* NextOp points to the op that holds the Bank Register */
 872
 873     NextOp = NextOp->Common.Next;
 874
 875     /* NextOp points to the op that holds the Bank Value */
 876
 877     NextOp = NextOp->Common.Next;
 878
 879     /*
 880      * Set proper index into operand stack for AcpiDsObjStackPush
 881      * invoked inside AcpiDsCreateOperand.
 882      *
 883      * We use WalkState->Operands[0] to store the evaluated BankValue
 884      */
 885     WalkState->OperandIndex = 0;
 886
 887     Status = AcpiDsCreateOperand (WalkState, NextOp, 0);
 888     if (ACPI_FAILURE (Status))
 889     {
 890         return_ACPI_STATUS (Status);
 891     }
 892
 893     Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState);
 894     if (ACPI_FAILURE (Status))
 895     {
 896         return_ACPI_STATUS (Status);
 897     }
 898
 899     ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS,
 900         AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1);
 901     /*
 902      * Get the BankValue operand and save it
 903      * (at Top of stack)
 904      */
 905     OperandDesc = WalkState->Operands[0];
 906
 907     /* Arg points to the start Bank Field */
 908
 909     Arg = AcpiPsGetArg (Op, 4);
 910     while (Arg)
 911     {
 912         /* Ignore OFFSET and ACCESSAS terms here */
 913
 914         if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
 915         {
 916             Node = Arg->Common.Node;
 917
 918             ObjDesc = AcpiNsGetAttachedObject (Node);
 919             if (!ObjDesc)
 920             {
 921                 return_ACPI_STATUS (AE_NOT_EXIST);
 922             }
 923
 924             ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value;
 925         }
 926
 927         /* Move to next field in the list */
 928
 929         Arg = Arg->Common.Next;
 930     }
 931
 932     AcpiUtRemoveReference (OperandDesc);
 933     return_ACPI_STATUS (Status);
 934 }