| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: excreate - Named object creation |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | #include "acinterp.h" |
| 47 | #include "amlcode.h" |
| 48 | #include "acnamesp.h" |
| 49 | |
| 50 | |
| 51 | #define _COMPONENT ACPI_EXECUTER |
| 52 | ACPI_MODULE_NAME ("excreate" ) |
| 53 | |
| 54 | |
| 55 | #ifndef ACPI_NO_METHOD_EXECUTION |
| 56 | /******************************************************************************* |
| 57 | * |
| 58 | * FUNCTION: AcpiExCreateAlias |
| 59 | * |
| 60 | * PARAMETERS: WalkState - Current state, contains operands |
| 61 | * |
| 62 | * RETURN: Status |
| 63 | * |
| 64 | * DESCRIPTION: Create a new named alias |
| 65 | * |
| 66 | ******************************************************************************/ |
| 67 | |
| 68 | ACPI_STATUS |
| 69 | AcpiExCreateAlias ( |
| 70 | ACPI_WALK_STATE *WalkState) |
| 71 | { |
| 72 | ACPI_NAMESPACE_NODE *TargetNode; |
| 73 | ACPI_NAMESPACE_NODE *AliasNode; |
| 74 | ACPI_STATUS Status = AE_OK; |
| 75 | |
| 76 | |
| 77 | ACPI_FUNCTION_TRACE (ExCreateAlias); |
| 78 | |
| 79 | |
| 80 | /* Get the source/alias operands (both namespace nodes) */ |
| 81 | |
| 82 | AliasNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0]; |
| 83 | TargetNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1]; |
| 84 | |
| 85 | if ((TargetNode->Type == ACPI_TYPE_LOCAL_ALIAS) || |
| 86 | (TargetNode->Type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) |
| 87 | { |
| 88 | /* |
| 89 | * Dereference an existing alias so that we don't create a chain |
| 90 | * of aliases. With this code, we guarantee that an alias is |
| 91 | * always exactly one level of indirection away from the |
| 92 | * actual aliased name. |
| 93 | */ |
| 94 | TargetNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, TargetNode->Object); |
| 95 | } |
| 96 | |
| 97 | /* |
| 98 | * For objects that can never change (i.e., the NS node will |
| 99 | * permanently point to the same object), we can simply attach |
| 100 | * the object to the new NS node. For other objects (such as |
| 101 | * Integers, buffers, etc.), we have to point the Alias node |
| 102 | * to the original Node. |
| 103 | */ |
| 104 | switch (TargetNode->Type) |
| 105 | { |
| 106 | |
| 107 | /* For these types, the sub-object can change dynamically via a Store */ |
| 108 | |
| 109 | case ACPI_TYPE_INTEGER: |
| 110 | case ACPI_TYPE_STRING: |
| 111 | case ACPI_TYPE_BUFFER: |
| 112 | case ACPI_TYPE_PACKAGE: |
| 113 | case ACPI_TYPE_BUFFER_FIELD: |
| 114 | /* |
| 115 | * These types open a new scope, so we need the NS node in order to access |
| 116 | * any children. |
| 117 | */ |
| 118 | case ACPI_TYPE_DEVICE: |
| 119 | case ACPI_TYPE_POWER: |
| 120 | case ACPI_TYPE_PROCESSOR: |
| 121 | case ACPI_TYPE_THERMAL: |
| 122 | case ACPI_TYPE_LOCAL_SCOPE: |
| 123 | /* |
| 124 | * The new alias has the type ALIAS and points to the original |
| 125 | * NS node, not the object itself. |
| 126 | */ |
| 127 | AliasNode->Type = ACPI_TYPE_LOCAL_ALIAS; |
| 128 | AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode); |
| 129 | break; |
| 130 | |
| 131 | case ACPI_TYPE_METHOD: |
| 132 | /* |
| 133 | * Control method aliases need to be differentiated |
| 134 | */ |
| 135 | AliasNode->Type = ACPI_TYPE_LOCAL_METHOD_ALIAS; |
| 136 | AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode); |
| 137 | break; |
| 138 | |
| 139 | default: |
| 140 | |
| 141 | /* Attach the original source object to the new Alias Node */ |
| 142 | |
| 143 | /* |
| 144 | * The new alias assumes the type of the target, and it points |
| 145 | * to the same object. The reference count of the object has an |
| 146 | * additional reference to prevent deletion out from under either the |
| 147 | * target node or the alias Node |
| 148 | */ |
| 149 | Status = AcpiNsAttachObject (AliasNode, |
| 150 | AcpiNsGetAttachedObject (TargetNode), TargetNode->Type); |
| 151 | break; |
| 152 | } |
| 153 | |
| 154 | /* Since both operands are Nodes, we don't need to delete them */ |
| 155 | |
| 156 | return_ACPI_STATUS (Status); |
| 157 | } |
| 158 | |
| 159 | |
| 160 | /******************************************************************************* |
| 161 | * |
| 162 | * FUNCTION: AcpiExCreateEvent |
| 163 | * |
| 164 | * PARAMETERS: WalkState - Current state |
| 165 | * |
| 166 | * RETURN: Status |
| 167 | * |
| 168 | * DESCRIPTION: Create a new event object |
| 169 | * |
| 170 | ******************************************************************************/ |
| 171 | |
| 172 | ACPI_STATUS |
| 173 | AcpiExCreateEvent ( |
| 174 | ACPI_WALK_STATE *WalkState) |
| 175 | { |
| 176 | ACPI_STATUS Status; |
| 177 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 178 | |
| 179 | |
| 180 | ACPI_FUNCTION_TRACE (ExCreateEvent); |
| 181 | |
| 182 | |
| 183 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT); |
| 184 | if (!ObjDesc) |
| 185 | { |
| 186 | Status = AE_NO_MEMORY; |
| 187 | goto Cleanup; |
| 188 | } |
| 189 | |
| 190 | /* |
| 191 | * Create the actual OS semaphore, with zero initial units -- meaning |
| 192 | * that the event is created in an unsignalled state |
| 193 | */ |
| 194 | Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, |
| 195 | &ObjDesc->Event.OsSemaphore); |
| 196 | if (ACPI_FAILURE (Status)) |
| 197 | { |
| 198 | goto Cleanup; |
| 199 | } |
| 200 | |
| 201 | /* Attach object to the Node */ |
| 202 | |
| 203 | Status = AcpiNsAttachObject ( |
| 204 | (ACPI_NAMESPACE_NODE *) WalkState->Operands[0], |
| 205 | ObjDesc, ACPI_TYPE_EVENT); |
| 206 | |
| 207 | Cleanup: |
| 208 | /* |
| 209 | * Remove local reference to the object (on error, will cause deletion |
| 210 | * of both object and semaphore if present.) |
| 211 | */ |
| 212 | AcpiUtRemoveReference (ObjDesc); |
| 213 | return_ACPI_STATUS (Status); |
| 214 | } |
| 215 | |
| 216 | |
| 217 | /******************************************************************************* |
| 218 | * |
| 219 | * FUNCTION: AcpiExCreateMutex |
| 220 | * |
| 221 | * PARAMETERS: WalkState - Current state |
| 222 | * |
| 223 | * RETURN: Status |
| 224 | * |
| 225 | * DESCRIPTION: Create a new mutex object |
| 226 | * |
| 227 | * Mutex (Name[0], SyncLevel[1]) |
| 228 | * |
| 229 | ******************************************************************************/ |
| 230 | |
| 231 | ACPI_STATUS |
| 232 | AcpiExCreateMutex ( |
| 233 | ACPI_WALK_STATE *WalkState) |
| 234 | { |
| 235 | ACPI_STATUS Status = AE_OK; |
| 236 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 237 | |
| 238 | |
| 239 | ACPI_FUNCTION_TRACE_PTR (ExCreateMutex, ACPI_WALK_OPERANDS); |
| 240 | |
| 241 | |
| 242 | /* Create the new mutex object */ |
| 243 | |
| 244 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX); |
| 245 | if (!ObjDesc) |
| 246 | { |
| 247 | Status = AE_NO_MEMORY; |
| 248 | goto Cleanup; |
| 249 | } |
| 250 | |
| 251 | /* Create the actual OS Mutex */ |
| 252 | |
| 253 | Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex); |
| 254 | if (ACPI_FAILURE (Status)) |
| 255 | { |
| 256 | goto Cleanup; |
| 257 | } |
| 258 | |
| 259 | /* Init object and attach to NS node */ |
| 260 | |
| 261 | ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value; |
| 262 | ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0]; |
| 263 | |
| 264 | Status = AcpiNsAttachObject ( |
| 265 | ObjDesc->Mutex.Node, ObjDesc, ACPI_TYPE_MUTEX); |
| 266 | |
| 267 | |
| 268 | Cleanup: |
| 269 | /* |
| 270 | * Remove local reference to the object (on error, will cause deletion |
| 271 | * of both object and semaphore if present.) |
| 272 | */ |
| 273 | AcpiUtRemoveReference (ObjDesc); |
| 274 | return_ACPI_STATUS (Status); |
| 275 | } |
| 276 | |
| 277 | |
| 278 | /******************************************************************************* |
| 279 | * |
| 280 | * FUNCTION: AcpiExCreateRegion |
| 281 | * |
| 282 | * PARAMETERS: AmlStart - Pointer to the region declaration AML |
| 283 | * AmlLength - Max length of the declaration AML |
| 284 | * SpaceId - Address space ID for the region |
| 285 | * WalkState - Current state |
| 286 | * |
| 287 | * RETURN: Status |
| 288 | * |
| 289 | * DESCRIPTION: Create a new operation region object |
| 290 | * |
| 291 | ******************************************************************************/ |
| 292 | |
| 293 | ACPI_STATUS |
| 294 | AcpiExCreateRegion ( |
| 295 | UINT8 *AmlStart, |
| 296 | UINT32 AmlLength, |
| 297 | UINT8 SpaceId, |
| 298 | ACPI_WALK_STATE *WalkState) |
| 299 | { |
| 300 | ACPI_STATUS Status; |
| 301 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 302 | ACPI_NAMESPACE_NODE *Node; |
| 303 | ACPI_OPERAND_OBJECT *RegionObj2; |
| 304 | |
| 305 | |
| 306 | ACPI_FUNCTION_TRACE (ExCreateRegion); |
| 307 | |
| 308 | |
| 309 | /* Get the Namespace Node */ |
| 310 | |
| 311 | Node = WalkState->Op->Common.Node; |
| 312 | |
| 313 | /* |
| 314 | * If the region object is already attached to this node, |
| 315 | * just return |
| 316 | */ |
| 317 | if (AcpiNsGetAttachedObject (Node)) |
| 318 | { |
| 319 | return_ACPI_STATUS (AE_OK); |
| 320 | } |
| 321 | |
| 322 | /* |
| 323 | * Space ID must be one of the predefined IDs, or in the user-defined |
| 324 | * range |
| 325 | */ |
| 326 | if (!AcpiIsValidSpaceId (SpaceId)) |
| 327 | { |
| 328 | /* |
| 329 | * Print an error message, but continue. We don't want to abort |
| 330 | * a table load for this exception. Instead, if the region is |
| 331 | * actually used at runtime, abort the executing method. |
| 332 | */ |
| 333 | ACPI_ERROR ((AE_INFO, |
| 334 | "Invalid/unknown Address Space ID: 0x%2.2X" , SpaceId)); |
| 335 | } |
| 336 | |
| 337 | ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n" , |
| 338 | AcpiUtGetRegionName (SpaceId), SpaceId)); |
| 339 | |
| 340 | /* Create the region descriptor */ |
| 341 | |
| 342 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); |
| 343 | if (!ObjDesc) |
| 344 | { |
| 345 | Status = AE_NO_MEMORY; |
| 346 | goto Cleanup; |
| 347 | } |
| 348 | |
| 349 | /* |
| 350 | * Remember location in AML stream of address & length |
| 351 | * operands since they need to be evaluated at run time. |
| 352 | */ |
| 353 | RegionObj2 = AcpiNsGetSecondaryObject (ObjDesc); |
| 354 | RegionObj2->Extra.AmlStart = AmlStart; |
| 355 | RegionObj2->Extra.AmlLength = AmlLength; |
| 356 | RegionObj2->Extra.Method_REG = NULL; |
| 357 | if (WalkState->ScopeInfo) |
| 358 | { |
| 359 | RegionObj2->Extra.ScopeNode = WalkState->ScopeInfo->Scope.Node; |
| 360 | } |
| 361 | else |
| 362 | { |
| 363 | RegionObj2->Extra.ScopeNode = Node; |
| 364 | } |
| 365 | |
| 366 | /* Init the region from the operands */ |
| 367 | |
| 368 | ObjDesc->Region.SpaceId = SpaceId; |
| 369 | ObjDesc->Region.Address = 0; |
| 370 | ObjDesc->Region.Length = 0; |
| 371 | ObjDesc->Region.Node = Node; |
| 372 | ObjDesc->Region.Handler = NULL; |
| 373 | ObjDesc->Common.Flags &= |
| 374 | ~(AOPOBJ_SETUP_COMPLETE | AOPOBJ_REG_CONNECTED | |
| 375 | AOPOBJ_OBJECT_INITIALIZED); |
| 376 | |
| 377 | /* Install the new region object in the parent Node */ |
| 378 | |
| 379 | Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION); |
| 380 | |
| 381 | |
| 382 | Cleanup: |
| 383 | |
| 384 | /* Remove local reference to the object */ |
| 385 | |
| 386 | AcpiUtRemoveReference (ObjDesc); |
| 387 | return_ACPI_STATUS (Status); |
| 388 | } |
| 389 | |
| 390 | |
| 391 | /******************************************************************************* |
| 392 | * |
| 393 | * FUNCTION: AcpiExCreateProcessor |
| 394 | * |
| 395 | * PARAMETERS: WalkState - Current state |
| 396 | * |
| 397 | * RETURN: Status |
| 398 | * |
| 399 | * DESCRIPTION: Create a new processor object and populate the fields |
| 400 | * |
| 401 | * Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3]) |
| 402 | * |
| 403 | ******************************************************************************/ |
| 404 | |
| 405 | ACPI_STATUS |
| 406 | AcpiExCreateProcessor ( |
| 407 | ACPI_WALK_STATE *WalkState) |
| 408 | { |
| 409 | ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| 410 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 411 | ACPI_STATUS Status; |
| 412 | |
| 413 | |
| 414 | ACPI_FUNCTION_TRACE_PTR (ExCreateProcessor, WalkState); |
| 415 | |
| 416 | |
| 417 | /* Create the processor object */ |
| 418 | |
| 419 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR); |
| 420 | if (!ObjDesc) |
| 421 | { |
| 422 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 423 | } |
| 424 | |
| 425 | /* Initialize the processor object from the operands */ |
| 426 | |
| 427 | ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value; |
| 428 | ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value; |
| 429 | ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value; |
| 430 | |
| 431 | /* Install the processor object in the parent Node */ |
| 432 | |
| 433 | Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], |
| 434 | ObjDesc, ACPI_TYPE_PROCESSOR); |
| 435 | |
| 436 | /* Remove local reference to the object */ |
| 437 | |
| 438 | AcpiUtRemoveReference (ObjDesc); |
| 439 | return_ACPI_STATUS (Status); |
| 440 | } |
| 441 | |
| 442 | |
| 443 | /******************************************************************************* |
| 444 | * |
| 445 | * FUNCTION: AcpiExCreatePowerResource |
| 446 | * |
| 447 | * PARAMETERS: WalkState - Current state |
| 448 | * |
| 449 | * RETURN: Status |
| 450 | * |
| 451 | * DESCRIPTION: Create a new PowerResource object and populate the fields |
| 452 | * |
| 453 | * PowerResource (Name[0], SystemLevel[1], ResourceOrder[2]) |
| 454 | * |
| 455 | ******************************************************************************/ |
| 456 | |
| 457 | ACPI_STATUS |
| 458 | AcpiExCreatePowerResource ( |
| 459 | ACPI_WALK_STATE *WalkState) |
| 460 | { |
| 461 | ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| 462 | ACPI_STATUS Status; |
| 463 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 464 | |
| 465 | |
| 466 | ACPI_FUNCTION_TRACE_PTR (ExCreatePowerResource, WalkState); |
| 467 | |
| 468 | |
| 469 | /* Create the power resource object */ |
| 470 | |
| 471 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER); |
| 472 | if (!ObjDesc) |
| 473 | { |
| 474 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 475 | } |
| 476 | |
| 477 | /* Initialize the power object from the operands */ |
| 478 | |
| 479 | ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value; |
| 480 | ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value; |
| 481 | |
| 482 | /* Install the power resource object in the parent Node */ |
| 483 | |
| 484 | Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], |
| 485 | ObjDesc, ACPI_TYPE_POWER); |
| 486 | |
| 487 | /* Remove local reference to the object */ |
| 488 | |
| 489 | AcpiUtRemoveReference (ObjDesc); |
| 490 | return_ACPI_STATUS (Status); |
| 491 | } |
| 492 | #endif |
| 493 | |
| 494 | |
| 495 | /******************************************************************************* |
| 496 | * |
| 497 | * FUNCTION: AcpiExCreateMethod |
| 498 | * |
| 499 | * PARAMETERS: AmlStart - First byte of the method's AML |
| 500 | * AmlLength - AML byte count for this method |
| 501 | * WalkState - Current state |
| 502 | * |
| 503 | * RETURN: Status |
| 504 | * |
| 505 | * DESCRIPTION: Create a new method object |
| 506 | * |
| 507 | ******************************************************************************/ |
| 508 | |
| 509 | ACPI_STATUS |
| 510 | AcpiExCreateMethod ( |
| 511 | UINT8 *AmlStart, |
| 512 | UINT32 AmlLength, |
| 513 | ACPI_WALK_STATE *WalkState) |
| 514 | { |
| 515 | ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| 516 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 517 | ACPI_STATUS Status; |
| 518 | UINT8 MethodFlags; |
| 519 | |
| 520 | |
| 521 | ACPI_FUNCTION_TRACE_PTR (ExCreateMethod, WalkState); |
| 522 | |
| 523 | |
| 524 | /* Create a new method object */ |
| 525 | |
| 526 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); |
| 527 | if (!ObjDesc) |
| 528 | { |
| 529 | Status = AE_NO_MEMORY; |
| 530 | goto Exit; |
| 531 | } |
| 532 | |
| 533 | /* Save the method's AML pointer and length */ |
| 534 | |
| 535 | ObjDesc->Method.AmlStart = AmlStart; |
| 536 | ObjDesc->Method.AmlLength = AmlLength; |
| 537 | ObjDesc->Method.Node = Operand[0]; |
| 538 | |
| 539 | /* |
| 540 | * Disassemble the method flags. Split off the ArgCount, Serialized |
| 541 | * flag, and SyncLevel for efficiency. |
| 542 | */ |
| 543 | MethodFlags = (UINT8) Operand[1]->Integer.Value; |
| 544 | ObjDesc->Method.ParamCount = (UINT8) |
| 545 | (MethodFlags & AML_METHOD_ARG_COUNT); |
| 546 | |
| 547 | /* |
| 548 | * Get the SyncLevel. If method is serialized, a mutex will be |
| 549 | * created for this method when it is parsed. |
| 550 | */ |
| 551 | if (MethodFlags & AML_METHOD_SERIALIZED) |
| 552 | { |
| 553 | ObjDesc->Method.InfoFlags = ACPI_METHOD_SERIALIZED; |
| 554 | |
| 555 | /* |
| 556 | * ACPI 1.0: SyncLevel = 0 |
| 557 | * ACPI 2.0: SyncLevel = SyncLevel in method declaration |
| 558 | */ |
| 559 | ObjDesc->Method.SyncLevel = (UINT8) |
| 560 | ((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4); |
| 561 | } |
| 562 | |
| 563 | /* Attach the new object to the method Node */ |
| 564 | |
| 565 | Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], |
| 566 | ObjDesc, ACPI_TYPE_METHOD); |
| 567 | |
| 568 | /* Remove local reference to the object */ |
| 569 | |
| 570 | AcpiUtRemoveReference (ObjDesc); |
| 571 | |
| 572 | Exit: |
| 573 | /* Remove a reference to the operand */ |
| 574 | |
| 575 | AcpiUtRemoveReference (Operand[1]); |
| 576 | return_ACPI_STATUS (Status); |
| 577 | } |
| 578 | |