excreate.c revision 87031
1/****************************************************************************** 2 * 3 * Module Name: excreate - Named object creation 4 * $Revision: 79 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 "acparser.h" 122#include "acinterp.h" 123#include "amlcode.h" 124#include "acnamesp.h" 125#include "acevents.h" 126#include "acdispat.h" 127 128 129#define _COMPONENT ACPI_EXECUTER 130 MODULE_NAME ("excreate") 131 132 133/***************************************************************************** 134 * 135 * FUNCTION: AcpiExCreateAlias 136 * 137 * PARAMETERS: WalkState - Current state, contains List of 138 * operands for the opcode 139 * 140 * RETURN: Status 141 * 142 * DESCRIPTION: Create a new named alias 143 * 144 ****************************************************************************/ 145 146ACPI_STATUS 147AcpiExCreateAlias ( 148 ACPI_WALK_STATE *WalkState) 149{ 150 ACPI_NAMESPACE_NODE *SourceNode; 151 ACPI_STATUS Status; 152 153 154 FUNCTION_TRACE ("ExCreateAlias"); 155 156 157 /* Get the source/alias operands (both namespace nodes) */ 158 159 SourceNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1]; 160 161 162 /* Attach the original source object to the new Alias Node */ 163 164 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0], 165 AcpiNsGetAttachedObject (SourceNode), 166 SourceNode->Type); 167 168 /* 169 * The new alias assumes the type of the source, but it points 170 * to the same object. The reference count of the object has an 171 * additional reference to prevent deletion out from under either the 172 * source or the alias Node 173 */ 174 175 /* Since both operands are Nodes, we don't need to delete them */ 176 177 return_ACPI_STATUS (Status); 178} 179 180 181/***************************************************************************** 182 * 183 * FUNCTION: AcpiExCreateEvent 184 * 185 * PARAMETERS: WalkState - Current state 186 * 187 * RETURN: Status 188 * 189 * DESCRIPTION: Create a new event object 190 * 191 ****************************************************************************/ 192 193ACPI_STATUS 194AcpiExCreateEvent ( 195 ACPI_WALK_STATE *WalkState) 196{ 197 ACPI_STATUS Status; 198 ACPI_OPERAND_OBJECT *ObjDesc; 199 200 201 FUNCTION_TRACE ("ExCreateEvent"); 202 203 204 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT); 205 if (!ObjDesc) 206 { 207 Status = AE_NO_MEMORY; 208 goto Cleanup; 209 } 210 211 /* 212 * Create the actual OS semaphore, with zero initial units -- meaning 213 * that the event is created in an unsignalled state 214 */ 215 Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, 216 &ObjDesc->Event.Semaphore); 217 if (ACPI_FAILURE (Status)) 218 { 219 goto Cleanup; 220 } 221 222 /* Attach object to the Node */ 223 224 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0], 225 ObjDesc, (UINT8) ACPI_TYPE_EVENT); 226 227Cleanup: 228 /* 229 * Remove local reference to the object (on error, will cause deletion 230 * of both object and semaphore if present.) 231 */ 232 AcpiUtRemoveReference (ObjDesc); 233 return_ACPI_STATUS (Status); 234} 235 236 237/***************************************************************************** 238 * 239 * FUNCTION: AcpiExCreateMutex 240 * 241 * PARAMETERS: WalkState - Current state 242 * 243 * RETURN: Status 244 * 245 * DESCRIPTION: Create a new mutex object 246 * 247 * Mutex (Name[0], SyncLevel[1]) 248 * 249 ****************************************************************************/ 250 251ACPI_STATUS 252AcpiExCreateMutex ( 253 ACPI_WALK_STATE *WalkState) 254{ 255 ACPI_STATUS Status = AE_OK; 256 ACPI_OPERAND_OBJECT *ObjDesc; 257 258 259 FUNCTION_TRACE_PTR ("ExCreateMutex", WALK_OPERANDS); 260 261 262 /* Create the new mutex object */ 263 264 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX); 265 if (!ObjDesc) 266 { 267 Status = AE_NO_MEMORY; 268 goto Cleanup; 269 } 270 271 /* 272 * Create the actual OS semaphore. 273 * One unit max to make it a mutex, with one initial unit to allow 274 * the mutex to be acquired. 275 */ 276 Status = AcpiOsCreateSemaphore (1, 1, &ObjDesc->Mutex.Semaphore); 277 if (ACPI_FAILURE (Status)) 278 { 279 goto Cleanup; 280 } 281 282 /* Init object and attach to NS node */ 283 284 ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value; 285 286 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) WalkState->Operands[0], 287 ObjDesc, (UINT8) ACPI_TYPE_MUTEX); 288 289 290Cleanup: 291 /* 292 * Remove local reference to the object (on error, will cause deletion 293 * of both object and semaphore if present.) 294 */ 295 AcpiUtRemoveReference (ObjDesc); 296 return_ACPI_STATUS (Status); 297} 298 299 300/***************************************************************************** 301 * 302 * FUNCTION: AcpiExCreateRegion 303 * 304 * PARAMETERS: AmlStart - Pointer to the region declaration AML 305 * AmlLength - Max length of the declaration AML 306 * Operands - List of operands for the opcode 307 * WalkState - Current state 308 * 309 * RETURN: Status 310 * 311 * DESCRIPTION: Create a new operation region object 312 * 313 ****************************************************************************/ 314 315ACPI_STATUS 316AcpiExCreateRegion ( 317 UINT8 *AmlStart, 318 UINT32 AmlLength, 319 UINT8 RegionSpace, 320 ACPI_WALK_STATE *WalkState) 321{ 322 ACPI_STATUS Status; 323 ACPI_OPERAND_OBJECT *ObjDesc; 324 ACPI_NAMESPACE_NODE *Node; 325 ACPI_OPERAND_OBJECT *RegionObj2 = NULL; 326 327 328 FUNCTION_TRACE ("ExCreateRegion"); 329 330 331 /* Get the Node from the object stack */ 332 333 Node = WalkState->Op->Node; 334 335 /* 336 * If the region object is already attached to this node, 337 * just return 338 */ 339 if (AcpiNsGetAttachedObject (Node)) 340 { 341 return_ACPI_STATUS (AE_OK); 342 } 343 344 /* 345 * Space ID must be one of the predefined IDs, or in the user-defined 346 * range 347 */ 348 if ((RegionSpace >= ACPI_NUM_PREDEFINED_REGIONS) && 349 (RegionSpace < ACPI_USER_REGION_BEGIN)) 350 { 351 REPORT_ERROR (("Invalid AddressSpace type %X\n", RegionSpace)); 352 return_ACPI_STATUS (AE_AML_INVALID_SPACE_ID); 353 } 354 355 ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (%X)\n", 356 AcpiUtGetRegionName (RegionSpace), RegionSpace)); 357 358 359 /* Create the region descriptor */ 360 361 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); 362 if (!ObjDesc) 363 { 364 Status = AE_NO_MEMORY; 365 goto Cleanup; 366 } 367 368 /* 369 * Remember location in AML stream of address & length 370 * operands since they need to be evaluated at run time. 371 */ 372 RegionObj2 = ObjDesc->Common.NextObject; 373 RegionObj2->Extra.AmlStart = AmlStart; 374 RegionObj2->Extra.AmlLength = AmlLength; 375 376 /* Init the region from the operands */ 377 378 ObjDesc->Region.SpaceId = RegionSpace; 379 ObjDesc->Region.Address = 0; 380 ObjDesc->Region.Length = 0; 381 ObjDesc->Region.Node = Node; 382 383 /* Install the new region object in the parent Node */ 384 385 Status = AcpiNsAttachObject (Node, ObjDesc, (UINT8) ACPI_TYPE_REGION); 386 387 388Cleanup: 389 390 /* Remove local reference to the object */ 391 392 AcpiUtRemoveReference (ObjDesc); 393 return_ACPI_STATUS (Status); 394} 395 396 397/***************************************************************************** 398 * 399 * FUNCTION: AcpiExCreateTableRegion 400 * 401 * PARAMETERS: WalkState - Current state 402 * 403 * RETURN: Status 404 * 405 * DESCRIPTION: Create a new DataTableRegion object 406 * 407 ****************************************************************************/ 408 409ACPI_STATUS 410AcpiExCreateTableRegion ( 411 ACPI_WALK_STATE *WalkState) 412{ 413 ACPI_STATUS Status = AE_OK; 414 415 416 FUNCTION_TRACE ("ExCreateTableRegion"); 417 418/* 419 ACPI_OPERAND_OBJECT *ObjDesc; 420 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); 421 if (!ObjDesc) 422 { 423 Status = AE_NO_MEMORY; 424 goto Cleanup; 425 } 426 427 428Cleanup: 429*/ 430 431 return_ACPI_STATUS (Status); 432} 433 434 435/***************************************************************************** 436 * 437 * FUNCTION: AcpiExCreateProcessor 438 * 439 * PARAMETERS: Op - Op containing the Processor definition and 440 * args 441 * ProcessorNode - Parent Node for the processor object 442 * 443 * RETURN: Status 444 * 445 * DESCRIPTION: Create a new processor object and populate the fields 446 * 447 * Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3]) 448 * 449 ****************************************************************************/ 450 451ACPI_STATUS 452AcpiExCreateProcessor ( 453 ACPI_WALK_STATE *WalkState) 454{ 455 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 456 ACPI_OPERAND_OBJECT *ObjDesc; 457 ACPI_STATUS Status; 458 459 460 FUNCTION_TRACE_PTR ("ExCreateProcessor", WalkState); 461 462 463 /* Create the processor object */ 464 465 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR); 466 if (!ObjDesc) 467 { 468 return_ACPI_STATUS (AE_NO_MEMORY); 469 } 470 471 /* 472 * Initialize the processor object from the operands 473 */ 474 ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value; 475 ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value; 476 ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value; 477 478 /* Install the processor object in the parent Node */ 479 480 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 481 ObjDesc, (UINT8) ACPI_TYPE_PROCESSOR); 482 483 484 /* Remove local reference to the object */ 485 486 AcpiUtRemoveReference (ObjDesc); 487 return_ACPI_STATUS (Status); 488} 489 490 491/***************************************************************************** 492 * 493 * FUNCTION: AcpiExCreatePowerResource 494 * 495 * PARAMETERS: Op - Op containing the PowerResource definition 496 * and args 497 * PowerNode - Parent Node for the power object 498 * 499 * RETURN: Status 500 * 501 * DESCRIPTION: Create a new PowerResource object and populate the fields 502 * 503 * PowerResource (Name[0], SystemLevel[1], ResourceOrder[2]) 504 * 505 ****************************************************************************/ 506 507ACPI_STATUS 508AcpiExCreatePowerResource ( 509 ACPI_WALK_STATE *WalkState) 510{ 511 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 512 ACPI_STATUS Status; 513 ACPI_OPERAND_OBJECT *ObjDesc; 514 515 516 FUNCTION_TRACE_PTR ("ExCreatePowerResource", WalkState); 517 518 519 /* Create the power resource object */ 520 521 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER); 522 if (!ObjDesc) 523 { 524 return_ACPI_STATUS (AE_NO_MEMORY); 525 } 526 527 /* Initialize the power object from the operands */ 528 529 ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value; 530 ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value; 531 532 /* Install the power resource object in the parent Node */ 533 534 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 535 ObjDesc, (UINT8) ACPI_TYPE_POWER); 536 537 538 /* Remove local reference to the object */ 539 540 AcpiUtRemoveReference (ObjDesc); 541 return_ACPI_STATUS (Status); 542} 543 544 545/***************************************************************************** 546 * 547 * FUNCTION: AcpiExCreateMethod 548 * 549 * PARAMETERS: AmlStart - First byte of the method's AML 550 * AmlLength - AML byte count for this method 551 * MethodFlags - AML method flag byte 552 * Method - Method Node 553 * 554 * RETURN: Status 555 * 556 * DESCRIPTION: Create a new method object 557 * 558 ****************************************************************************/ 559 560ACPI_STATUS 561AcpiExCreateMethod ( 562 UINT8 *AmlStart, 563 UINT32 AmlLength, 564 ACPI_WALK_STATE *WalkState) 565{ 566 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 567 ACPI_OPERAND_OBJECT *ObjDesc; 568 ACPI_STATUS Status; 569 UINT8 MethodFlags; 570 571 572 FUNCTION_TRACE_PTR ("ExCreateMethod", WalkState); 573 574 575 /* Create a new method object */ 576 577 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); 578 if (!ObjDesc) 579 { 580 return_ACPI_STATUS (AE_NO_MEMORY); 581 } 582 583 /* Save the method's AML pointer and length */ 584 585 ObjDesc->Method.AmlStart = AmlStart; 586 ObjDesc->Method.AmlLength = AmlLength; 587 588 /* disassemble the method flags */ 589 590 MethodFlags = (UINT8) Operand[1]->Integer.Value; 591 592 ObjDesc->Method.MethodFlags = MethodFlags; 593 ObjDesc->Method.ParamCount = (UINT8) (MethodFlags & METHOD_FLAGS_ARG_COUNT); 594 595 /* 596 * Get the concurrency count. If required, a semaphore will be 597 * created for this method when it is parsed. 598 */ 599 if (MethodFlags & METHOD_FLAGS_SERIALIZED) 600 { 601 /* 602 * ACPI 1.0: Concurrency = 1 603 * ACPI 2.0: Concurrency = (SyncLevel (in method declaration) + 1) 604 */ 605 ObjDesc->Method.Concurrency = (UINT8) 606 (((MethodFlags & METHOD_FLAGS_SYNCH_LEVEL) >> 4) + 1); 607 } 608 609 else 610 { 611 ObjDesc->Method.Concurrency = INFINITE_CONCURRENCY; 612 } 613 614 /* Attach the new object to the method Node */ 615 616 Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], 617 ObjDesc, (UINT8) ACPI_TYPE_METHOD); 618 619 /* Remove local reference to the object */ 620 621 AcpiUtRemoveReference (ObjDesc); 622 623 /* Remove a reference to the operand */ 624 625 AcpiUtRemoveReference (Operand[1]); 626 return_ACPI_STATUS (Status); 627} 628 629 630