excreate.c revision 114237
1/****************************************************************************** 2 * 3 * Module Name: excreate - Named object creation 4 * $Revision: 99 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2003, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 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 __EXCREATE_C__ 119 120#include "acpi.h" 121#include "acinterp.h" 122#include "amlcode.h" 123#include "acnamesp.h" 124#include "acevents.h" 125#include "actables.h" 126 127 128#define _COMPONENT ACPI_EXECUTER 129 ACPI_MODULE_NAME ("excreate") 130 131 132#ifndef ACPI_NO_METHOD_EXECUTION 133/***************************************************************************** 134 * 135 * FUNCTION: AcpiExCreateAlias 136 * 137 * PARAMETERS: WalkState - Current state, contains operands 138 * 139 * RETURN: Status 140 * 141 * DESCRIPTION: Create a new named alias 142 * 143 ****************************************************************************/ 144 145ACPI_STATUS 146AcpiExCreateAlias ( 147 ACPI_WALK_STATE *WalkState) 148{ 149 ACPI_NAMESPACE_NODE *TargetNode; 150 ACPI_NAMESPACE_NODE *AliasNode; 151 ACPI_STATUS Status = AE_OK; 152 153 154 ACPI_FUNCTION_TRACE ("ExCreateAlias"); 155 156 157 /* Get the source/alias operands (both namespace nodes) */ 158 159 AliasNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0]; 160 TargetNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1]; 161 162 if (TargetNode->Type == ACPI_TYPE_LOCAL_ALIAS) 163 { 164 /* 165 * Dereference an existing alias so that we don't create a chain 166 * of aliases. With this code, we guarantee that an alias is 167 * always exactly one level of indirection away from the 168 * actual aliased name. 169 */ 170 TargetNode = (ACPI_NAMESPACE_NODE *) TargetNode->Object; 171 } 172 173 /* 174 * For objects that can never change (i.e., the NS node will 175 * permanently point to the same object), we can simply attach 176 * the object to the new NS node. For other objects (such as 177 * Integers, buffers, etc.), we have to point the Alias node 178 * to the original Node. 179 */ 180 switch (TargetNode->Type) 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 /* 189 * The new alias has the type ALIAS and points to the original 190 * NS node, not the object itself. This is because for these 191 * types, the object can change dynamically via a Store. 192 */ 193 AliasNode->Type = ACPI_TYPE_LOCAL_ALIAS; 194 AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode); 195 break; 196 197 default: 198 199 /* Attach the original source object to the new Alias Node */ 200 201 /* 202 * The new alias assumes the type of the target, and it points 203 * to the same object. The reference count of the object has an 204 * additional reference to prevent deletion out from under either the 205 * target node or the alias Node 206 */ 207 Status = AcpiNsAttachObject (AliasNode, 208 AcpiNsGetAttachedObject (TargetNode), 209 TargetNode->Type); 210 break; 211 } 212 213 /* Since both operands are Nodes, we don't need to delete them */ 214 215 return_ACPI_STATUS (Status); 216} 217 218 219/***************************************************************************** 220 * 221 * FUNCTION: AcpiExCreateEvent 222 * 223 * PARAMETERS: WalkState - Current state 224 * 225 * RETURN: Status 226 * 227 * DESCRIPTION: Create a new event object 228 * 229 ****************************************************************************/ 230 231ACPI_STATUS 232AcpiExCreateEvent ( 233 ACPI_WALK_STATE *WalkState) 234{ 235 ACPI_STATUS Status; 236 ACPI_OPERAND_OBJECT *ObjDesc; 237 238 239 ACPI_FUNCTION_TRACE ("ExCreateEvent"); 240 241 242 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT); 243 if (!ObjDesc) 244 { 245 Status = AE_NO_MEMORY; 246 goto Cleanup; 247 } 248 249 /* 250 * Create the actual OS semaphore, with zero initial units -- meaning 251 * that the event is created in an unsignalled state 252 */ 253 Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, 254 &ObjDesc->Event.Semaphore); 255 if (ACPI_FAILURE (Status)) 256 { 257 goto Cleanup; 258 } 259 260 /* Attach object to the Node */ 261 262 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0], 263 ObjDesc, ACPI_TYPE_EVENT); 264 265Cleanup: 266 /* 267 * Remove local reference to the object (on error, will cause deletion 268 * of both object and semaphore if present.) 269 */ 270 AcpiUtRemoveReference (ObjDesc); 271 return_ACPI_STATUS (Status); 272} 273 274 275/***************************************************************************** 276 * 277 * FUNCTION: AcpiExCreateMutex 278 * 279 * PARAMETERS: WalkState - Current state 280 * 281 * RETURN: Status 282 * 283 * DESCRIPTION: Create a new mutex object 284 * 285 * Mutex (Name[0], SyncLevel[1]) 286 * 287 ****************************************************************************/ 288 289ACPI_STATUS 290AcpiExCreateMutex ( 291 ACPI_WALK_STATE *WalkState) 292{ 293 ACPI_STATUS Status = AE_OK; 294 ACPI_OPERAND_OBJECT *ObjDesc; 295 296 297 ACPI_FUNCTION_TRACE_PTR ("ExCreateMutex", ACPI_WALK_OPERANDS); 298 299 300 /* Create the new mutex object */ 301 302 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX); 303 if (!ObjDesc) 304 { 305 Status = AE_NO_MEMORY; 306 goto Cleanup; 307 } 308 309 /* 310 * Create the actual OS semaphore. 311 * One unit max to make it a mutex, with one initial unit to allow 312 * the mutex to be acquired. 313 */ 314 Status = AcpiOsCreateSemaphore (1, 1, &ObjDesc->Mutex.Semaphore); 315 if (ACPI_FAILURE (Status)) 316 { 317 goto Cleanup; 318 } 319 320 /* Init object and attach to NS node */ 321 322 ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value; 323 ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0]; 324 325 Status = AcpiNsAttachObject (ObjDesc->Mutex.Node, 326 ObjDesc, ACPI_TYPE_MUTEX); 327 328 329Cleanup: 330 /* 331 * Remove local reference to the object (on error, will cause deletion 332 * of both object and semaphore if present.) 333 */ 334 AcpiUtRemoveReference (ObjDesc); 335 return_ACPI_STATUS (Status); 336} 337 338 339/***************************************************************************** 340 * 341 * FUNCTION: AcpiExCreateRegion 342 * 343 * PARAMETERS: AmlStart - Pointer to the region declaration AML 344 * AmlLength - Max length of the declaration AML 345 * Operands - List of operands for the opcode 346 * WalkState - Current state 347 * 348 * RETURN: Status 349 * 350 * DESCRIPTION: Create a new operation region object 351 * 352 ****************************************************************************/ 353 354ACPI_STATUS 355AcpiExCreateRegion ( 356 UINT8 *AmlStart, 357 UINT32 AmlLength, 358 UINT8 RegionSpace, 359 ACPI_WALK_STATE *WalkState) 360{ 361 ACPI_STATUS Status; 362 ACPI_OPERAND_OBJECT *ObjDesc; 363 ACPI_NAMESPACE_NODE *Node; 364 ACPI_OPERAND_OBJECT *RegionObj2; 365 366 367 ACPI_FUNCTION_TRACE ("ExCreateRegion"); 368 369 370 /* Get the Node from the object stack */ 371 372 Node = WalkState->Op->Common.Node; 373 374 /* 375 * If the region object is already attached to this node, 376 * just return 377 */ 378 if (AcpiNsGetAttachedObject (Node)) 379 { 380 return_ACPI_STATUS (AE_OK); 381 } 382 383 /* 384 * Space ID must be one of the predefined IDs, or in the user-defined 385 * range 386 */ 387 if ((RegionSpace >= ACPI_NUM_PREDEFINED_REGIONS) && 388 (RegionSpace < ACPI_USER_REGION_BEGIN)) 389 { 390 ACPI_REPORT_ERROR (("Invalid AddressSpace type %X\n", RegionSpace)); 391 return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID); 392 } 393 394 ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (%X)\n", 395 AcpiUtGetRegionName (RegionSpace), RegionSpace)); 396 397 398 /* Create the region descriptor */ 399 400 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); 401 if (!ObjDesc) 402 { 403 Status = AE_NO_MEMORY; 404 goto Cleanup; 405 } 406 407 /* 408 * Remember location in AML stream of address & length 409 * operands since they need to be evaluated at run time. 410 */ 411 RegionObj2 = ObjDesc->Common.NextObject; 412 RegionObj2->Extra.AmlStart = AmlStart; 413 RegionObj2->Extra.AmlLength = AmlLength; 414 415 /* Init the region from the operands */ 416 417 ObjDesc->Region.SpaceId = RegionSpace; 418 ObjDesc->Region.Address = 0; 419 ObjDesc->Region.Length = 0; 420 ObjDesc->Region.Node = Node; 421 422 /* Install the new region object in the parent Node */ 423 424 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION); 425 426 427Cleanup: 428 429 /* Remove local reference to the object */ 430 431 AcpiUtRemoveReference (ObjDesc); 432 return_ACPI_STATUS (Status); 433} 434 435 436/***************************************************************************** 437 * 438 * FUNCTION: AcpiExCreateTableRegion 439 * 440 * PARAMETERS: WalkState - Current state 441 * 442 * RETURN: Status 443 * 444 * DESCRIPTION: Create a new DataTableRegion object 445 * 446 ****************************************************************************/ 447 448ACPI_STATUS 449AcpiExCreateTableRegion ( 450 ACPI_WALK_STATE *WalkState) 451{ 452 ACPI_STATUS Status; 453 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 454 ACPI_OPERAND_OBJECT *ObjDesc; 455 ACPI_NAMESPACE_NODE *Node; 456 ACPI_TABLE_HEADER *Table; 457 ACPI_OPERAND_OBJECT *RegionObj2; 458 459 460 ACPI_FUNCTION_TRACE ("ExCreateTableRegion"); 461 462 /* Get the Node from the object stack */ 463 464 Node = WalkState->Op->Common.Node; 465 466 /* 467 * If the region object is already attached to this node, 468 * just return 469 */ 470 if (AcpiNsGetAttachedObject (Node)) 471 { 472 return_ACPI_STATUS (AE_OK); 473 } 474 475 /* Find the ACPI table */ 476 477 Status = AcpiTbFindTable (Operand[1]->String.Pointer, 478 Operand[2]->String.Pointer, 479 Operand[3]->String.Pointer, &Table); 480 481 if (ACPI_FAILURE (Status)) 482 { 483 return_ACPI_STATUS (Status); 484 } 485 486 /* Create the region descriptor */ 487 488 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); 489 if (!ObjDesc) 490 { 491 return_ACPI_STATUS (AE_NO_MEMORY); 492 } 493 494 RegionObj2 = ObjDesc->Common.NextObject; 495 RegionObj2->Extra.RegionContext = NULL; 496 497 /* Init the region from the operands */ 498 499 ObjDesc->Region.SpaceId = REGION_DATA_TABLE; 500 ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) ACPI_TO_INTEGER (Table); 501 ObjDesc->Region.Length = Table->Length; 502 ObjDesc->Region.Node = Node; 503 ObjDesc->Region.Flags = AOPOBJ_DATA_VALID; 504 505 /* Install the new region object in the parent Node */ 506 507 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION); 508 if (ACPI_FAILURE (Status)) 509 { 510 goto Cleanup; 511 } 512 513 Status = AcpiEvInitializeRegion (ObjDesc, FALSE); 514 if (ACPI_FAILURE (Status)) 515 { 516 if (Status == AE_NOT_EXIST) 517 { 518 Status = AE_OK; 519 } 520 else 521 { 522 goto Cleanup; 523 } 524 } 525 526 ObjDesc->Region.Flags |= AOPOBJ_SETUP_COMPLETE; 527 528 529Cleanup: 530 531 /* Remove local reference to the object */ 532 533 AcpiUtRemoveReference (ObjDesc); 534 return_ACPI_STATUS (Status); 535} 536 537 538/***************************************************************************** 539 * 540 * FUNCTION: AcpiExCreateProcessor 541 * 542 * PARAMETERS: WalkState - Current state 543 * 544 * RETURN: Status 545 * 546 * DESCRIPTION: Create a new processor object and populate the fields 547 * 548 * Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3]) 549 * 550 ****************************************************************************/ 551 552ACPI_STATUS 553AcpiExCreateProcessor ( 554 ACPI_WALK_STATE *WalkState) 555{ 556 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 557 ACPI_OPERAND_OBJECT *ObjDesc; 558 ACPI_STATUS Status; 559 560 561 ACPI_FUNCTION_TRACE_PTR ("ExCreateProcessor", WalkState); 562 563 564 /* Create the processor object */ 565 566 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR); 567 if (!ObjDesc) 568 { 569 return_ACPI_STATUS (AE_NO_MEMORY); 570 } 571 572 /* 573 * Initialize the processor object from the operands 574 */ 575 ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value; 576 ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value; 577 ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value; 578 579 /* Install the processor object in the parent Node */ 580 581 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 582 ObjDesc, ACPI_TYPE_PROCESSOR); 583 584 585 /* Remove local reference to the object */ 586 587 AcpiUtRemoveReference (ObjDesc); 588 return_ACPI_STATUS (Status); 589} 590 591 592/***************************************************************************** 593 * 594 * FUNCTION: AcpiExCreatePowerResource 595 * 596 * PARAMETERS: WalkState - Current state 597 * 598 * RETURN: Status 599 * 600 * DESCRIPTION: Create a new PowerResource object and populate the fields 601 * 602 * PowerResource (Name[0], SystemLevel[1], ResourceOrder[2]) 603 * 604 ****************************************************************************/ 605 606ACPI_STATUS 607AcpiExCreatePowerResource ( 608 ACPI_WALK_STATE *WalkState) 609{ 610 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 611 ACPI_STATUS Status; 612 ACPI_OPERAND_OBJECT *ObjDesc; 613 614 615 ACPI_FUNCTION_TRACE_PTR ("ExCreatePowerResource", WalkState); 616 617 618 /* Create the power resource object */ 619 620 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER); 621 if (!ObjDesc) 622 { 623 return_ACPI_STATUS (AE_NO_MEMORY); 624 } 625 626 /* Initialize the power object from the operands */ 627 628 ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value; 629 ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value; 630 631 /* Install the power resource object in the parent Node */ 632 633 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 634 ObjDesc, ACPI_TYPE_POWER); 635 636 637 /* Remove local reference to the object */ 638 639 AcpiUtRemoveReference (ObjDesc); 640 return_ACPI_STATUS (Status); 641} 642 643#endif 644 645/***************************************************************************** 646 * 647 * FUNCTION: AcpiExCreateMethod 648 * 649 * PARAMETERS: AmlStart - First byte of the method's AML 650 * AmlLength - AML byte count for this method 651 * WalkState - Current state 652 * 653 * RETURN: Status 654 * 655 * DESCRIPTION: Create a new method object 656 * 657 ****************************************************************************/ 658 659ACPI_STATUS 660AcpiExCreateMethod ( 661 UINT8 *AmlStart, 662 UINT32 AmlLength, 663 ACPI_WALK_STATE *WalkState) 664{ 665 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 666 ACPI_OPERAND_OBJECT *ObjDesc; 667 ACPI_STATUS Status; 668 UINT8 MethodFlags; 669 670 671 ACPI_FUNCTION_TRACE_PTR ("ExCreateMethod", WalkState); 672 673 674 /* Create a new method object */ 675 676 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); 677 if (!ObjDesc) 678 { 679 return_ACPI_STATUS (AE_NO_MEMORY); 680 } 681 682 /* Save the method's AML pointer and length */ 683 684 ObjDesc->Method.AmlStart = AmlStart; 685 ObjDesc->Method.AmlLength = AmlLength; 686 687 /* disassemble the method flags */ 688 689 MethodFlags = (UINT8) Operand[1]->Integer.Value; 690 691 ObjDesc->Method.MethodFlags = MethodFlags; 692 ObjDesc->Method.ParamCount = (UINT8) (MethodFlags & METHOD_FLAGS_ARG_COUNT); 693 694 /* 695 * Get the concurrency count. If required, a semaphore will be 696 * created for this method when it is parsed. 697 */ 698 if (MethodFlags & METHOD_FLAGS_SERIALIZED) 699 { 700 /* 701 * ACPI 1.0: Concurrency = 1 702 * ACPI 2.0: Concurrency = (SyncLevel (in method declaration) + 1) 703 */ 704 ObjDesc->Method.Concurrency = (UINT8) 705 (((MethodFlags & METHOD_FLAGS_SYNCH_LEVEL) >> 4) + 1); 706 } 707 708 else 709 { 710 ObjDesc->Method.Concurrency = INFINITE_CONCURRENCY; 711 } 712 713 /* Attach the new object to the method Node */ 714 715 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 716 ObjDesc, ACPI_TYPE_METHOD); 717 718 /* Remove local reference to the object */ 719 720 AcpiUtRemoveReference (ObjDesc); 721 722 /* Remove a reference to the operand */ 723 724 AcpiUtRemoveReference (Operand[1]); 725 return_ACPI_STATUS (Status); 726} 727 728 729