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 - 2016, 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 141ACPI_STATUS 142AcpiExCreateAlias ( 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 245ACPI_STATUS 246AcpiExCreateEvent ( 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 ( 277 (ACPI_NAMESPACE_NODE *) WalkState->Operands[0], 278 ObjDesc, ACPI_TYPE_EVENT); 279 280Cleanup: 281 /* 282 * Remove local reference to the object (on error, will cause deletion 283 * of both object and semaphore if present.) 284 */ 285 AcpiUtRemoveReference (ObjDesc); 286 return_ACPI_STATUS (Status); 287} 288 289 290/******************************************************************************* 291 * 292 * FUNCTION: AcpiExCreateMutex 293 * 294 * PARAMETERS: WalkState - Current state 295 * 296 * RETURN: Status 297 * 298 * DESCRIPTION: Create a new mutex object 299 * 300 * Mutex (Name[0], SyncLevel[1]) 301 * 302 ******************************************************************************/ 303 304ACPI_STATUS 305AcpiExCreateMutex ( 306 ACPI_WALK_STATE *WalkState) 307{ 308 ACPI_STATUS Status = AE_OK; 309 ACPI_OPERAND_OBJECT *ObjDesc; 310 311 312 ACPI_FUNCTION_TRACE_PTR (ExCreateMutex, ACPI_WALK_OPERANDS); 313 314 315 /* Create the new mutex object */ 316 317 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX); 318 if (!ObjDesc) 319 { 320 Status = AE_NO_MEMORY; 321 goto Cleanup; 322 } 323 324 /* Create the actual OS Mutex */ 325 326 Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex); 327 if (ACPI_FAILURE (Status)) 328 { 329 goto Cleanup; 330 } 331 332 /* Init object and attach to NS node */ 333 334 ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value; 335 ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0]; 336 337 Status = AcpiNsAttachObject ( 338 ObjDesc->Mutex.Node, ObjDesc, ACPI_TYPE_MUTEX); 339 340 341Cleanup: 342 /* 343 * Remove local reference to the object (on error, will cause deletion 344 * of both object and semaphore if present.) 345 */ 346 AcpiUtRemoveReference (ObjDesc); 347 return_ACPI_STATUS (Status); 348} 349 350 351/******************************************************************************* 352 * 353 * FUNCTION: AcpiExCreateRegion 354 * 355 * PARAMETERS: AmlStart - Pointer to the region declaration AML 356 * AmlLength - Max length of the declaration AML 357 * SpaceId - Address space ID for the region 358 * WalkState - Current state 359 * 360 * RETURN: Status 361 * 362 * DESCRIPTION: Create a new operation region object 363 * 364 ******************************************************************************/ 365 366ACPI_STATUS 367AcpiExCreateRegion ( 368 UINT8 *AmlStart, 369 UINT32 AmlLength, 370 UINT8 SpaceId, 371 ACPI_WALK_STATE *WalkState) 372{ 373 ACPI_STATUS Status; 374 ACPI_OPERAND_OBJECT *ObjDesc; 375 ACPI_NAMESPACE_NODE *Node; 376 ACPI_OPERAND_OBJECT *RegionObj2; 377 378 379 ACPI_FUNCTION_TRACE (ExCreateRegion); 380 381 382 /* Get the Namespace Node */ 383 384 Node = WalkState->Op->Common.Node; 385 386 /* 387 * If the region object is already attached to this node, 388 * just return 389 */ 390 if (AcpiNsGetAttachedObject (Node)) 391 { 392 return_ACPI_STATUS (AE_OK); 393 } 394 395 /* 396 * Space ID must be one of the predefined IDs, or in the user-defined 397 * range 398 */ 399 if (!AcpiIsValidSpaceId (SpaceId)) 400 { 401 /* 402 * Print an error message, but continue. We don't want to abort 403 * a table load for this exception. Instead, if the region is 404 * actually used at runtime, abort the executing method. 405 */ 406 ACPI_ERROR ((AE_INFO, 407 "Invalid/unknown Address Space ID: 0x%2.2X", SpaceId)); 408 } 409 410 ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n", 411 AcpiUtGetRegionName (SpaceId), SpaceId)); 412 413 /* Create the region descriptor */ 414 415 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); 416 if (!ObjDesc) 417 { 418 Status = AE_NO_MEMORY; 419 goto Cleanup; 420 } 421 422 /* 423 * Remember location in AML stream of address & length 424 * operands since they need to be evaluated at run time. 425 */ 426 RegionObj2 = AcpiNsGetSecondaryObject (ObjDesc); 427 RegionObj2->Extra.AmlStart = AmlStart; 428 RegionObj2->Extra.AmlLength = AmlLength; 429 RegionObj2->Extra.Method_REG = NULL; 430 if (WalkState->ScopeInfo) 431 { 432 RegionObj2->Extra.ScopeNode = WalkState->ScopeInfo->Scope.Node; 433 } 434 else 435 { 436 RegionObj2->Extra.ScopeNode = Node; 437 } 438 439 /* Init the region from the operands */ 440 441 ObjDesc->Region.SpaceId = SpaceId; 442 ObjDesc->Region.Address = 0; 443 ObjDesc->Region.Length = 0; 444 ObjDesc->Region.Node = Node; 445 ObjDesc->Region.Handler = NULL; 446 ObjDesc->Common.Flags &= 447 ~(AOPOBJ_SETUP_COMPLETE | AOPOBJ_REG_CONNECTED | 448 AOPOBJ_OBJECT_INITIALIZED); 449 450 /* Install the new region object in the parent Node */ 451 452 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION); 453 454 455Cleanup: 456 457 /* Remove local reference to the object */ 458 459 AcpiUtRemoveReference (ObjDesc); 460 return_ACPI_STATUS (Status); 461} 462 463 464/******************************************************************************* 465 * 466 * FUNCTION: AcpiExCreateProcessor 467 * 468 * PARAMETERS: WalkState - Current state 469 * 470 * RETURN: Status 471 * 472 * DESCRIPTION: Create a new processor object and populate the fields 473 * 474 * Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3]) 475 * 476 ******************************************************************************/ 477 478ACPI_STATUS 479AcpiExCreateProcessor ( 480 ACPI_WALK_STATE *WalkState) 481{ 482 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 483 ACPI_OPERAND_OBJECT *ObjDesc; 484 ACPI_STATUS Status; 485 486 487 ACPI_FUNCTION_TRACE_PTR (ExCreateProcessor, WalkState); 488 489 490 /* Create the processor object */ 491 492 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR); 493 if (!ObjDesc) 494 { 495 return_ACPI_STATUS (AE_NO_MEMORY); 496 } 497 498 /* Initialize the processor object from the operands */ 499 500 ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value; 501 ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value; 502 ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value; 503 504 /* Install the processor object in the parent Node */ 505 506 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 507 ObjDesc, ACPI_TYPE_PROCESSOR); 508 509 /* Remove local reference to the object */ 510 511 AcpiUtRemoveReference (ObjDesc); 512 return_ACPI_STATUS (Status); 513} 514 515 516/******************************************************************************* 517 * 518 * FUNCTION: AcpiExCreatePowerResource 519 * 520 * PARAMETERS: WalkState - Current state 521 * 522 * RETURN: Status 523 * 524 * DESCRIPTION: Create a new PowerResource object and populate the fields 525 * 526 * PowerResource (Name[0], SystemLevel[1], ResourceOrder[2]) 527 * 528 ******************************************************************************/ 529 530ACPI_STATUS 531AcpiExCreatePowerResource ( 532 ACPI_WALK_STATE *WalkState) 533{ 534 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 535 ACPI_STATUS Status; 536 ACPI_OPERAND_OBJECT *ObjDesc; 537 538 539 ACPI_FUNCTION_TRACE_PTR (ExCreatePowerResource, WalkState); 540 541 542 /* Create the power resource object */ 543 544 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER); 545 if (!ObjDesc) 546 { 547 return_ACPI_STATUS (AE_NO_MEMORY); 548 } 549 550 /* Initialize the power object from the operands */ 551 552 ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value; 553 ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value; 554 555 /* Install the power resource object in the parent Node */ 556 557 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 558 ObjDesc, ACPI_TYPE_POWER); 559 560 /* Remove local reference to the object */ 561 562 AcpiUtRemoveReference (ObjDesc); 563 return_ACPI_STATUS (Status); 564} 565#endif 566 567 568/******************************************************************************* 569 * 570 * FUNCTION: AcpiExCreateMethod 571 * 572 * PARAMETERS: AmlStart - First byte of the method's AML 573 * AmlLength - AML byte count for this method 574 * WalkState - Current state 575 * 576 * RETURN: Status 577 * 578 * DESCRIPTION: Create a new method object 579 * 580 ******************************************************************************/ 581 582ACPI_STATUS 583AcpiExCreateMethod ( 584 UINT8 *AmlStart, 585 UINT32 AmlLength, 586 ACPI_WALK_STATE *WalkState) 587{ 588 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 589 ACPI_OPERAND_OBJECT *ObjDesc; 590 ACPI_STATUS Status; 591 UINT8 MethodFlags; 592 593 594 ACPI_FUNCTION_TRACE_PTR (ExCreateMethod, WalkState); 595 596 597 /* Create a new method object */ 598 599 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); 600 if (!ObjDesc) 601 { 602 Status = AE_NO_MEMORY; 603 goto Exit; 604 } 605 606 /* Save the method's AML pointer and length */ 607 608 ObjDesc->Method.AmlStart = AmlStart; 609 ObjDesc->Method.AmlLength = AmlLength; 610 ObjDesc->Method.Node = Operand[0]; 611 612 /* 613 * Disassemble the method flags. Split off the ArgCount, Serialized 614 * flag, and SyncLevel for efficiency. 615 */ 616 MethodFlags = (UINT8) Operand[1]->Integer.Value; 617 ObjDesc->Method.ParamCount = (UINT8) 618 (MethodFlags & AML_METHOD_ARG_COUNT); 619 620 /* 621 * Get the SyncLevel. If method is serialized, a mutex will be 622 * created for this method when it is parsed. 623 */ 624 if (MethodFlags & AML_METHOD_SERIALIZED) 625 { 626 ObjDesc->Method.InfoFlags = ACPI_METHOD_SERIALIZED; 627 628 /* 629 * ACPI 1.0: SyncLevel = 0 630 * ACPI 2.0: SyncLevel = SyncLevel in method declaration 631 */ 632 ObjDesc->Method.SyncLevel = (UINT8) 633 ((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4); 634 } 635 636 /* Attach the new object to the method Node */ 637 638 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 639 ObjDesc, ACPI_TYPE_METHOD); 640 641 /* Remove local reference to the object */ 642 643 AcpiUtRemoveReference (ObjDesc); 644 645Exit: 646 /* Remove a reference to the operand */ 647 648 AcpiUtRemoveReference (Operand[1]); 649 return_ACPI_STATUS (Status); 650} 651