reactos/drivers/bus/acpi/acpica/executer/excreate.c

   1 /******************************************************************************
   2  *
   3  * Module Name: excreate - Named object creation
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp.
  12  * All rights reserved.
  13  *
  14  * 2. License
  15  *
  16  * 2.1. This is your license from Intel Corp. under its intellectual property
  17  * rights. You may have additional license terms from the party that provided
  18  * you this software, covering your right to use that party's intellectual
  19  * property rights.
  20  *
  21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  22  * copy of the source code appearing in this file ("Covered Code") an
  23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  24  * base code distributed originally by Intel ("Original Intel Code") to copy,
  25  * make derivatives, distribute, use and display any portion of the Covered
  26  * Code in any form, with the right to sublicense such rights; and
  27  *
  28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  29  * license (with the right to sublicense), under only those claims of Intel
  30  * patents that are infringed by the Original Intel Code, to make, use, sell,
  31  * offer to sell, and import the Covered Code and derivative works thereof
  32  * solely to the minimum extent necessary to exercise the above copyright
  33  * license, and in no event shall the patent license extend to any additions
  34  * to or modifications of the Original Intel Code. No other license or right
  35  * is granted directly or by implication, estoppel or otherwise;
  36  *
  37  * The above copyright and patent license is granted only if the following
  38  * conditions are met:
  39  *
  40  * 3. Conditions
  41  *
  42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  43  * Redistribution of source code of any substantial portion of the Covered
  44  * Code or modification with rights to further distribute source must include
  45  * the above Copyright Notice, the above License, this list of Conditions,
  46  * and the following Disclaimer and Export Compliance provision. In addition,
  47  * Licensee must cause all Covered Code to which Licensee contributes to
  48  * contain a file documenting the changes Licensee made to create that Covered
  49  * Code and the date of any change. Licensee must include in that file the
  50  * documentation of any changes made by any predecessor Licensee. Licensee
  51  * must include a prominent statement that the modification is derived,
  52  * directly or indirectly, from Original Intel Code.
  53  *
  54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  55  * Redistribution of source code of any substantial portion of the Covered
  56  * Code or modification without rights to further distribute source must
  57  * include the following Disclaimer and Export Compliance provision in the
  58  * documentation and/or other materials provided with distribution. In
  59  * addition, Licensee may not authorize further sublicense of source of any
  60  * portion of the Covered Code, and must include terms to the effect that the
  61  * license from Licensee to its licensee is limited to the intellectual
  62  * property embodied in the software Licensee provides to its licensee, and
  63  * not to intellectual property embodied in modifications its licensee may
  64  * make.
  65  *
  66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  67  * substantial portion of the Covered Code or modification must reproduce the
  68  * above Copyright Notice, and the following Disclaimer and Export Compliance
  69  * provision in the documentation and/or other materials provided with the
  70  * distribution.
  71  *
  72  * 3.4. Intel retains all right, title, and interest in and to the Original
  73  * Intel Code.
  74  *
  75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  76  * Intel shall be used in advertising or otherwise to promote the sale, use or
  77  * other dealings in products derived from or relating to the Covered Code
  78  * without prior written authorization from Intel.
  79  *
  80  * 4. Disclaimer and Export Compliance
  81  *
  82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
  85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
  86
  87  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
  88  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  89  * PARTICULAR PURPOSE.
  90  *
  91  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  92  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  93  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  94  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  95  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  96  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
  97  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  98  * LIMITED REMEDY.
  99  *
 100  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 101  * software or system incorporating such software without first obtaining any
 102  * required license or other approval from the U. S. Department of Commerce or
 103  * any other agency or department of the United States Government. In the
 104  * event Licensee exports any such software from the United States or
 105  * re-exports any such software from a foreign destination, Licensee shall
 106  * ensure that the distribution and export/re-export of the software is in
 107  * compliance with all laws, regulations, orders, or other restrictions of the
 108  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 109  * any of its subsidiaries will export/re-export any technical data, process,
 110  * software, or service, directly or indirectly, to any country for which the
 111  * United States government or any agency thereof requires an export license,
 112  * other governmental approval, or letter of assurance, without first obtaining
 113  * such license, approval or letter.
 114  *
 115  *****************************************************************************/
 116
 117 #include "acpi.h"
 118 #include "accommon.h"
 119 #include "acinterp.h"
 120 #include "amlcode.h"
 121 #include "acnamesp.h"
 122
 123
 124 #define _COMPONENT          ACPI_EXECUTER
 125         ACPI_MODULE_NAME    ("excreate")
 126
 127
 128 #ifndef ACPI_NO_METHOD_EXECUTION
 129 /*******************************************************************************
 130  *
 131  * FUNCTION:    AcpiExCreateAlias
 132  *
 133  * PARAMETERS:  WalkState            - Current state, contains operands
 134  *
 135  * RETURN:      Status
 136  *
 137  * DESCRIPTION: Create a new named alias
 138  *
 139  ******************************************************************************/
 140
 141 ACPI_STATUS
 142 AcpiExCreateAlias (
 143     ACPI_WALK_STATE         *WalkState)
 144 {
 145     ACPI_NAMESPACE_NODE     *TargetNode;
 146     ACPI_NAMESPACE_NODE     *AliasNode;
 147     ACPI_STATUS             Status = AE_OK;
 148
 149
 150     ACPI_FUNCTION_TRACE (ExCreateAlias);
 151
 152
 153     /* Get the source/alias operands (both namespace nodes) */
 154
 155     AliasNode =  (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
 156     TargetNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1];
 157
 158     if ((TargetNode->Type == ACPI_TYPE_LOCAL_ALIAS)  ||
 159         (TargetNode->Type == ACPI_TYPE_LOCAL_METHOD_ALIAS))
 160     {
 161         /*
 162          * Dereference an existing alias so that we don't create a chain
 163          * of aliases. With this code, we guarantee that an alias is
 164          * always exactly one level of indirection away from the
 165          * actual aliased name.
 166          */
 167         TargetNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, TargetNode->Object);
 168     }
 169
 170     /*
 171      * For objects that can never change (i.e., the NS node will
 172      * permanently point to the same object), we can simply attach
 173      * the object to the new NS node. For other objects (such as
 174      * Integers, buffers, etc.), we have to point the Alias node
 175      * to the original Node.
 176      */
 177     switch (TargetNode->Type)
 178     {
 179
 180     /* For these types, the sub-object can change dynamically via a Store */
 181
 182     case ACPI_TYPE_INTEGER:
 183     case ACPI_TYPE_STRING:
 184     case ACPI_TYPE_BUFFER:
 185     case ACPI_TYPE_PACKAGE:
 186     case ACPI_TYPE_BUFFER_FIELD:
 187     /*
 188      * These types open a new scope, so we need the NS node in order to access
 189      * any children.
 190      */
 191     case ACPI_TYPE_DEVICE:
 192     case ACPI_TYPE_POWER:
 193     case ACPI_TYPE_PROCESSOR:
 194     case ACPI_TYPE_THERMAL:
 195     case ACPI_TYPE_LOCAL_SCOPE:
 196         /*
 197          * The new alias has the type ALIAS and points to the original
 198          * NS node, not the object itself.
 199          */
 200         AliasNode->Type = ACPI_TYPE_LOCAL_ALIAS;
 201         AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
 202         break;
 203
 204     case ACPI_TYPE_METHOD:
 205         /*
 206          * Control method aliases need to be differentiated
 207          */
 208         AliasNode->Type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
 209         AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
 210         break;
 211
 212     default:
 213
 214         /* Attach the original source object to the new Alias Node */
 215
 216         /*
 217          * The new alias assumes the type of the target, and it points
 218          * to the same object. The reference count of the object has an
 219          * additional reference to prevent deletion out from under either the
 220          * target node or the alias Node
 221          */
 222         Status = AcpiNsAttachObject (AliasNode,
 223                     AcpiNsGetAttachedObject (TargetNode), TargetNode->Type);
 224         break;
 225     }
 226
 227     /* Since both operands are Nodes, we don't need to delete them */
 228
 229     return_ACPI_STATUS (Status);
 230 }
 231
 232
 233 /*******************************************************************************
 234  *
 235  * FUNCTION:    AcpiExCreateEvent
 236  *
 237  * PARAMETERS:  WalkState           - Current state
 238  *
 239  * RETURN:      Status
 240  *
 241  * DESCRIPTION: Create a new event object
 242  *
 243  ******************************************************************************/
 244
 245 ACPI_STATUS
 246 AcpiExCreateEvent (
 247     ACPI_WALK_STATE         *WalkState)
 248 {
 249     ACPI_STATUS             Status;
 250     ACPI_OPERAND_OBJECT     *ObjDesc;
 251
 252
 253     ACPI_FUNCTION_TRACE (ExCreateEvent);
 254
 255
 256     ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT);
 257     if (!ObjDesc)
 258     {
 259         Status = AE_NO_MEMORY;
 260         goto Cleanup;
 261     }
 262
 263     /*
 264      * Create the actual OS semaphore, with zero initial units -- meaning
 265      * that the event is created in an unsignalled state
 266      */
 267     Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
 268                 &ObjDesc->Event.OsSemaphore);
 269     if (ACPI_FAILURE (Status))
 270     {
 271         goto Cleanup;
 272     }
 273
 274     /* Attach object to the Node */
 275
 276     Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0],
 277                 ObjDesc, ACPI_TYPE_EVENT);
 278
 279 Cleanup:
 280     /*
 281      * Remove local reference to the object (on error, will cause deletion
 282      * of both object and semaphore if present.)
 283      */
 284     AcpiUtRemoveReference (ObjDesc);
 285     return_ACPI_STATUS (Status);
 286 }
 287
 288
 289 /*******************************************************************************
 290  *
 291  * FUNCTION:    AcpiExCreateMutex
 292  *
 293  * PARAMETERS:  WalkState           - Current state
 294  *
 295  * RETURN:      Status
 296  *
 297  * DESCRIPTION: Create a new mutex object
 298  *
 299  *              Mutex (Name[0], SyncLevel[1])
 300  *
 301  ******************************************************************************/
 302
 303 ACPI_STATUS
 304 AcpiExCreateMutex (
 305     ACPI_WALK_STATE         *WalkState)
 306 {
 307     ACPI_STATUS             Status = AE_OK;
 308     ACPI_OPERAND_OBJECT     *ObjDesc;
 309
 310
 311     ACPI_FUNCTION_TRACE_PTR (ExCreateMutex, ACPI_WALK_OPERANDS);
 312
 313
 314     /* Create the new mutex object */
 315
 316     ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX);
 317     if (!ObjDesc)
 318     {
 319         Status = AE_NO_MEMORY;
 320         goto Cleanup;
 321     }
 322
 323     /* Create the actual OS Mutex */
 324
 325     Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex);
 326     if (ACPI_FAILURE (Status))
 327     {
 328         goto Cleanup;
 329     }
 330
 331     /* Init object and attach to NS node */
 332
 333     ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value;
 334     ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0];
 335
 336     Status = AcpiNsAttachObject (ObjDesc->Mutex.Node, ObjDesc, ACPI_TYPE_MUTEX);
 337
 338
 339 Cleanup:
 340     /*
 341      * Remove local reference to the object (on error, will cause deletion
 342      * of both object and semaphore if present.)
 343      */
 344     AcpiUtRemoveReference (ObjDesc);
 345     return_ACPI_STATUS (Status);
 346 }
 347
 348
 349 /*******************************************************************************
 350  *
 351  * FUNCTION:    AcpiExCreateRegion
 352  *
 353  * PARAMETERS:  AmlStart            - Pointer to the region declaration AML
 354  *              AmlLength           - Max length of the declaration AML
 355  *              SpaceId             - Address space ID for the region
 356  *              WalkState           - Current state
 357  *
 358  * RETURN:      Status
 359  *
 360  * DESCRIPTION: Create a new operation region object
 361  *
 362  ******************************************************************************/
 363
 364 ACPI_STATUS
 365 AcpiExCreateRegion (
 366     UINT8                   *AmlStart,
 367     UINT32                  AmlLength,
 368     UINT8                   SpaceId,
 369     ACPI_WALK_STATE         *WalkState)
 370 {
 371     ACPI_STATUS             Status;
 372     ACPI_OPERAND_OBJECT     *ObjDesc;
 373     ACPI_NAMESPACE_NODE     *Node;
 374     ACPI_OPERAND_OBJECT     *RegionObj2;
 375
 376
 377     ACPI_FUNCTION_TRACE (ExCreateRegion);
 378
 379
 380     /* Get the Namespace Node */
 381
 382     Node = WalkState->Op->Common.Node;
 383
 384     /*
 385      * If the region object is already attached to this node,
 386      * just return
 387      */
 388     if (AcpiNsGetAttachedObject (Node))
 389     {
 390         return_ACPI_STATUS (AE_OK);
 391     }
 392
 393     /*
 394      * Space ID must be one of the predefined IDs, or in the user-defined
 395      * range
 396      */
 397     if (!AcpiIsValidSpaceId (SpaceId))
 398     {
 399         /*
 400          * Print an error message, but continue. We don't want to abort
 401          * a table load for this exception. Instead, if the region is
 402          * actually used at runtime, abort the executing method.
 403          */
 404         ACPI_ERROR ((AE_INFO, "Invalid/unknown Address Space ID: 0x%2.2X", SpaceId));
 405     }
 406
 407     ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
 408         AcpiUtGetRegionName (SpaceId), SpaceId));
 409
 410     /* Create the region descriptor */
 411
 412     ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION);
 413     if (!ObjDesc)
 414     {
 415         Status = AE_NO_MEMORY;
 416         goto Cleanup;
 417     }
 418
 419     /*
 420      * Remember location in AML stream of address & length
 421      * operands since they need to be evaluated at run time.
 422      */
 423     RegionObj2 = ObjDesc->Common.NextObject;
 424     RegionObj2->Extra.AmlStart = AmlStart;
 425     RegionObj2->Extra.AmlLength = AmlLength;
 426     if (WalkState->ScopeInfo)
 427     {
 428         RegionObj2->Extra.ScopeNode = WalkState->ScopeInfo->Scope.Node;
 429     }
 430     else
 431     {
 432         RegionObj2->Extra.ScopeNode = Node;
 433     }
 434
 435     /* Init the region from the operands */
 436
 437     ObjDesc->Region.SpaceId = SpaceId;
 438     ObjDesc->Region.Address = 0;
 439     ObjDesc->Region.Length = 0;
 440     ObjDesc->Region.Node = Node;
 441
 442     /* Install the new region object in the parent Node */
 443
 444     Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION);
 445
 446
 447 Cleanup:
 448
 449     /* Remove local reference to the object */
 450
 451     AcpiUtRemoveReference (ObjDesc);
 452     return_ACPI_STATUS (Status);
 453 }
 454
 455
 456 /*******************************************************************************
 457  *
 458  * FUNCTION:    AcpiExCreateProcessor
 459  *
 460  * PARAMETERS:  WalkState           - Current state
 461  *
 462  * RETURN:      Status
 463  *
 464  * DESCRIPTION: Create a new processor object and populate the fields
 465  *
 466  *              Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3])
 467  *
 468  ******************************************************************************/
 469
 470 ACPI_STATUS
 471 AcpiExCreateProcessor (
 472     ACPI_WALK_STATE         *WalkState)
 473 {
 474     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 475     ACPI_OPERAND_OBJECT     *ObjDesc;
 476     ACPI_STATUS             Status;
 477
 478
 479     ACPI_FUNCTION_TRACE_PTR (ExCreateProcessor, WalkState);
 480
 481
 482     /* Create the processor object */
 483
 484     ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR);
 485     if (!ObjDesc)
 486     {
 487         return_ACPI_STATUS (AE_NO_MEMORY);
 488     }
 489
 490     /* Initialize the processor object from the operands */
 491
 492     ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value;
 493     ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value;
 494     ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value;
 495
 496     /* Install the processor object in the parent Node */
 497
 498     Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
 499                     ObjDesc, ACPI_TYPE_PROCESSOR);
 500
 501     /* Remove local reference to the object */
 502
 503     AcpiUtRemoveReference (ObjDesc);
 504     return_ACPI_STATUS (Status);
 505 }
 506
 507
 508 /*******************************************************************************
 509  *
 510  * FUNCTION:    AcpiExCreatePowerResource
 511  *
 512  * PARAMETERS:  WalkState           - Current state
 513  *
 514  * RETURN:      Status
 515  *
 516  * DESCRIPTION: Create a new PowerResource object and populate the fields
 517  *
 518  *              PowerResource (Name[0], SystemLevel[1], ResourceOrder[2])
 519  *
 520  ******************************************************************************/
 521
 522 ACPI_STATUS
 523 AcpiExCreatePowerResource (
 524     ACPI_WALK_STATE         *WalkState)
 525 {
 526     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 527     ACPI_STATUS             Status;
 528     ACPI_OPERAND_OBJECT     *ObjDesc;
 529
 530
 531     ACPI_FUNCTION_TRACE_PTR (ExCreatePowerResource, WalkState);
 532
 533
 534     /* Create the power resource object */
 535
 536     ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER);
 537     if (!ObjDesc)
 538     {
 539         return_ACPI_STATUS (AE_NO_MEMORY);
 540     }
 541
 542     /* Initialize the power object from the operands */
 543
 544     ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value;
 545     ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value;
 546
 547     /* Install the  power resource object in the parent Node */
 548
 549     Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
 550                     ObjDesc, ACPI_TYPE_POWER);
 551
 552     /* Remove local reference to the object */
 553
 554     AcpiUtRemoveReference (ObjDesc);
 555     return_ACPI_STATUS (Status);
 556 }
 557 #endif
 558
 559
 560 /*******************************************************************************
 561  *
 562  * FUNCTION:    AcpiExCreateMethod
 563  *
 564  * PARAMETERS:  AmlStart        - First byte of the method's AML
 565  *              AmlLength       - AML byte count for this method
 566  *              WalkState       - Current state
 567  *
 568  * RETURN:      Status
 569  *
 570  * DESCRIPTION: Create a new method object
 571  *
 572  ******************************************************************************/
 573
 574 ACPI_STATUS
 575 AcpiExCreateMethod (
 576     UINT8                   *AmlStart,
 577     UINT32                  AmlLength,
 578     ACPI_WALK_STATE         *WalkState)
 579 {
 580     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 581     ACPI_OPERAND_OBJECT     *ObjDesc;
 582     ACPI_STATUS             Status;
 583     UINT8                   MethodFlags;
 584
 585
 586     ACPI_FUNCTION_TRACE_PTR (ExCreateMethod, WalkState);
 587
 588
 589     /* Create a new method object */
 590
 591     ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
 592     if (!ObjDesc)
 593     {
 594        Status = AE_NO_MEMORY;
 595        goto Exit;
 596     }
 597
 598     /* Save the method's AML pointer and length  */
 599
 600     ObjDesc->Method.AmlStart = AmlStart;
 601     ObjDesc->Method.AmlLength = AmlLength;
 602     ObjDesc->Method.Node = Operand[0];
 603
 604     /*
 605      * Disassemble the method flags. Split off the ArgCount, Serialized
 606      * flag, and SyncLevel for efficiency.
 607      */
 608     MethodFlags = (UINT8) Operand[1]->Integer.Value;
 609     ObjDesc->Method.ParamCount = (UINT8) (MethodFlags & AML_METHOD_ARG_COUNT);
 610
 611     /*
 612      * Get the SyncLevel. If method is serialized, a mutex will be
 613      * created for this method when it is parsed.
 614      */
 615     if (MethodFlags & AML_METHOD_SERIALIZED)
 616     {
 617         ObjDesc->Method.InfoFlags = ACPI_METHOD_SERIALIZED;
 618
 619         /*
 620          * ACPI 1.0: SyncLevel = 0
 621          * ACPI 2.0: SyncLevel = SyncLevel in method declaration
 622          */
 623         ObjDesc->Method.SyncLevel = (UINT8)
 624             ((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4);
 625     }
 626
 627     /* Attach the new object to the method Node */
 628
 629     Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0],
 630                     ObjDesc, ACPI_TYPE_METHOD);
 631
 632     /* Remove local reference to the object */
 633
 634     AcpiUtRemoveReference (ObjDesc);
 635
 636 Exit:
 637     /* Remove a reference to the operand */
 638
 639     AcpiUtRemoveReference (Operand[1]);
 640     return_ACPI_STATUS (Status);
 641 }