1 /****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2009, 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 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 117 #define __NSXFINIT_C__ 118 119 #include "acpi.h" 120 #include "accommon.h" 121 #include "acnamesp.h" 122 #include "acdispat.h" 123 #include "acinterp.h" 124 125 #define _COMPONENT ACPI_NAMESPACE 126 ACPI_MODULE_NAME ("nsinit") 127 128 /* Local prototypes */ 129 130 static ACPI_STATUS 131 AcpiNsInitOneObject ( 132 ACPI_HANDLE ObjHandle, 133 UINT32 Level, 134 void *Context, 135 void **ReturnValue); 136 137 static ACPI_STATUS 138 AcpiNsInitOneDevice ( 139 ACPI_HANDLE ObjHandle, 140 UINT32 NestingLevel, 141 void *Context, 142 void **ReturnValue); 143 144 static ACPI_STATUS 145 AcpiNsFindIniMethods ( 146 ACPI_HANDLE ObjHandle, 147 UINT32 NestingLevel, 148 void *Context, 149 void **ReturnValue); 150 151 152 /******************************************************************************* 153 * 154 * FUNCTION: AcpiNsInitializeObjects 155 * 156 * PARAMETERS: None 157 * 158 * RETURN: Status 159 * 160 * DESCRIPTION: Walk the entire namespace and perform any necessary 161 * initialization on the objects found therein 162 * 163 ******************************************************************************/ 164 165 ACPI_STATUS 166 AcpiNsInitializeObjects ( 167 void) 168 { 169 ACPI_STATUS Status; 170 ACPI_INIT_WALK_INFO Info; 171 172 173 ACPI_FUNCTION_TRACE (NsInitializeObjects); 174 175 176 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 177 "**** Starting initialization of namespace objects ****\n")); 178 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 179 "Completing Region/Field/Buffer/Package initialization:")); 180 181 /* Set all init info to zero */ 182 183 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); 184 185 /* Walk entire namespace from the supplied root */ 186 187 Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 188 ACPI_UINT32_MAX, AcpiNsInitOneObject, NULL, 189 &Info, NULL); 190 if (ACPI_FAILURE (Status)) 191 { 192 ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace")); 193 } 194 195 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 196 "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd " 197 "Buffers %hd/%hd Packages (%hd nodes)\n", 198 Info.OpRegionInit, Info.OpRegionCount, 199 Info.FieldInit, Info.FieldCount, 200 Info.BufferInit, Info.BufferCount, 201 Info.PackageInit, Info.PackageCount, Info.ObjectCount)); 202 203 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 204 "%hd Control Methods found\n", Info.MethodCount)); 205 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 206 "%hd Op Regions found\n", Info.OpRegionCount)); 207 208 return_ACPI_STATUS (AE_OK); 209 } 210 211 212 /******************************************************************************* 213 * 214 * FUNCTION: AcpiNsInitializeDevices 215 * 216 * PARAMETERS: None 217 * 218 * RETURN: ACPI_STATUS 219 * 220 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. 221 * This means running _INI on all present devices. 222 * 223 * Note: We install PCI config space handler on region access, 224 * not here. 225 * 226 ******************************************************************************/ 227 228 ACPI_STATUS 229 AcpiNsInitializeDevices ( 230 void) 231 { 232 ACPI_STATUS Status; 233 ACPI_DEVICE_WALK_INFO Info; 234 235 236 ACPI_FUNCTION_TRACE (NsInitializeDevices); 237 238 239 /* Init counters */ 240 241 Info.DeviceCount = 0; 242 Info.Num_STA = 0; 243 Info.Num_INI = 0; 244 245 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 246 "Initializing Device/Processor/Thermal objects " 247 "by executing _INI methods:")); 248 249 /* Tree analysis: find all subtrees that contain _INI methods */ 250 251 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 252 ACPI_UINT32_MAX, FALSE, AcpiNsFindIniMethods, NULL, &Info, NULL); 253 if (ACPI_FAILURE (Status)) 254 { 255 goto ErrorExit; 256 } 257 258 /* Allocate the evaluation information block */ 259 260 Info.EvaluateInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); 261 if (!Info.EvaluateInfo) 262 { 263 Status = AE_NO_MEMORY; 264 goto ErrorExit; 265 } 266 267 /* 268 * Execute the "global" _INI method that may appear at the root. This 269 * support is provided for Windows compatibility (Vista+) and is not 270 * part of the ACPI specification. 271 */ 272 Info.EvaluateInfo->PrefixNode = AcpiGbl_RootNode; 273 Info.EvaluateInfo->Pathname = METHOD_NAME__INI; 274 Info.EvaluateInfo->Parameters = NULL; 275 Info.EvaluateInfo->Flags = ACPI_IGNORE_RETURN_VALUE; 276 277 Status = AcpiNsEvaluate (Info.EvaluateInfo); 278 if (ACPI_SUCCESS (Status)) 279 { 280 Info.Num_INI++; 281 } 282 283 /* Walk namespace to execute all _INIs on present devices */ 284 285 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 286 ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, NULL, &Info, NULL); 287 288 ACPI_FREE (Info.EvaluateInfo); 289 if (ACPI_FAILURE (Status)) 290 { 291 goto ErrorExit; 292 } 293 294 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 295 "\nExecuted %hd _INI methods requiring %hd _STA executions " 296 "(examined %hd objects)\n", 297 Info.Num_INI, Info.Num_STA, Info.DeviceCount)); 298 299 return_ACPI_STATUS (Status); 300 301 302 ErrorExit: 303 ACPI_EXCEPTION ((AE_INFO, Status, "During device initialization")); 304 return_ACPI_STATUS (Status); 305 } 306 307 308 /******************************************************************************* 309 * 310 * FUNCTION: AcpiNsInitOneObject 311 * 312 * PARAMETERS: ObjHandle - Node 313 * Level - Current nesting level 314 * Context - Points to a init info struct 315 * ReturnValue - Not used 316 * 317 * RETURN: Status 318 * 319 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 320 * within the namespace. 321 * 322 * Currently, the only objects that require initialization are: 323 * 1) Methods 324 * 2) Op Regions 325 * 326 ******************************************************************************/ 327 328 static ACPI_STATUS 329 AcpiNsInitOneObject ( 330 ACPI_HANDLE ObjHandle, 331 UINT32 Level, 332 void *Context, 333 void **ReturnValue) 334 { 335 ACPI_OBJECT_TYPE Type; 336 ACPI_STATUS Status = AE_OK; 337 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 338 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 339 ACPI_OPERAND_OBJECT *ObjDesc; 340 341 342 ACPI_FUNCTION_NAME (NsInitOneObject); 343 344 345 Info->ObjectCount++; 346 347 /* And even then, we are only interested in a few object types */ 348 349 Type = AcpiNsGetType (ObjHandle); 350 ObjDesc = AcpiNsGetAttachedObject (Node); 351 if (!ObjDesc) 352 { 353 return (AE_OK); 354 } 355 356 /* Increment counters for object types we are looking for */ 357 358 switch (Type) 359 { 360 case ACPI_TYPE_REGION: 361 Info->OpRegionCount++; 362 break; 363 364 case ACPI_TYPE_BUFFER_FIELD: 365 Info->FieldCount++; 366 break; 367 368 case ACPI_TYPE_LOCAL_BANK_FIELD: 369 Info->FieldCount++; 370 break; 371 372 case ACPI_TYPE_BUFFER: 373 Info->BufferCount++; 374 break; 375 376 case ACPI_TYPE_PACKAGE: 377 Info->PackageCount++; 378 break; 379 380 default: 381 382 /* No init required, just exit now */ 383 return (AE_OK); 384 } 385 386 /* If the object is already initialized, nothing else to do */ 387 388 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 389 { 390 return (AE_OK); 391 } 392 393 /* Must lock the interpreter before executing AML code */ 394 395 AcpiExEnterInterpreter (); 396 397 /* 398 * Each of these types can contain executable AML code within the 399 * declaration. 400 */ 401 switch (Type) 402 { 403 case ACPI_TYPE_REGION: 404 405 Info->OpRegionInit++; 406 Status = AcpiDsGetRegionArguments (ObjDesc); 407 break; 408 409 case ACPI_TYPE_BUFFER_FIELD: 410 411 Info->FieldInit++; 412 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 413 break; 414 415 case ACPI_TYPE_LOCAL_BANK_FIELD: 416 417 Info->FieldInit++; 418 Status = AcpiDsGetBankFieldArguments (ObjDesc); 419 break; 420 421 case ACPI_TYPE_BUFFER: 422 423 Info->BufferInit++; 424 Status = AcpiDsGetBufferArguments (ObjDesc); 425 break; 426 427 case ACPI_TYPE_PACKAGE: 428 429 Info->PackageInit++; 430 Status = AcpiDsGetPackageArguments (ObjDesc); 431 break; 432 433 default: 434 /* No other types can get here */ 435 break; 436 } 437 438 if (ACPI_FAILURE (Status)) 439 { 440 ACPI_EXCEPTION ((AE_INFO, Status, 441 "Could not execute arguments for [%4.4s] (%s)", 442 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Type))); 443 } 444 445 /* 446 * Print a dot for each object unless we are going to print the entire 447 * pathname 448 */ 449 if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES)) 450 { 451 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 452 } 453 454 /* 455 * We ignore errors from above, and always return OK, since we don't want 456 * to abort the walk on any single error. 457 */ 458 AcpiExExitInterpreter (); 459 return (AE_OK); 460 } 461 462 463 /******************************************************************************* 464 * 465 * FUNCTION: AcpiNsFindIniMethods 466 * 467 * PARAMETERS: ACPI_WALK_CALLBACK 468 * 469 * RETURN: ACPI_STATUS 470 * 471 * DESCRIPTION: Called during namespace walk. Finds objects named _INI under 472 * device/processor/thermal objects, and marks the entire subtree 473 * with a SUBTREE_HAS_INI flag. This flag is used during the 474 * subsequent device initialization walk to avoid entire subtrees 475 * that do not contain an _INI. 476 * 477 ******************************************************************************/ 478 479 static ACPI_STATUS 480 AcpiNsFindIniMethods ( 481 ACPI_HANDLE ObjHandle, 482 UINT32 NestingLevel, 483 void *Context, 484 void **ReturnValue) 485 { 486 ACPI_DEVICE_WALK_INFO *Info = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context); 487 ACPI_NAMESPACE_NODE *Node; 488 ACPI_NAMESPACE_NODE *ParentNode; 489 490 491 /* Keep count of device/processor/thermal objects */ 492 493 Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); 494 if ((Node->Type == ACPI_TYPE_DEVICE) || 495 (Node->Type == ACPI_TYPE_PROCESSOR) || 496 (Node->Type == ACPI_TYPE_THERMAL)) 497 { 498 Info->DeviceCount++; 499 return (AE_OK); 500 } 501 502 /* We are only looking for methods named _INI */ 503 504 if (!ACPI_COMPARE_NAME (Node->Name.Ascii, METHOD_NAME__INI)) 505 { 506 return (AE_OK); 507 } 508 509 /* 510 * The only _INI methods that we care about are those that are 511 * present under Device, Processor, and Thermal objects. 512 */ 513 ParentNode = AcpiNsGetParentNode (Node); 514 switch (ParentNode->Type) 515 { 516 case ACPI_TYPE_DEVICE: 517 case ACPI_TYPE_PROCESSOR: 518 case ACPI_TYPE_THERMAL: 519 520 /* Mark parent and bubble up the INI present flag to the root */ 521 522 while (ParentNode) 523 { 524 ParentNode->Flags |= ANOBJ_SUBTREE_HAS_INI; 525 ParentNode = AcpiNsGetParentNode (ParentNode); 526 } 527 break; 528 529 default: 530 break; 531 } 532 533 return (AE_OK); 534 } 535 536 537 /******************************************************************************* 538 * 539 * FUNCTION: AcpiNsInitOneDevice 540 * 541 * PARAMETERS: ACPI_WALK_CALLBACK 542 * 543 * RETURN: ACPI_STATUS 544 * 545 * DESCRIPTION: This is called once per device soon after ACPI is enabled 546 * to initialize each device. It determines if the device is 547 * present, and if so, calls _INI. 548 * 549 ******************************************************************************/ 550 551 static ACPI_STATUS 552 AcpiNsInitOneDevice ( 553 ACPI_HANDLE ObjHandle, 554 UINT32 NestingLevel, 555 void *Context, 556 void **ReturnValue) 557 { 558 ACPI_DEVICE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context); 559 ACPI_EVALUATE_INFO *Info = WalkInfo->EvaluateInfo; 560 UINT32 Flags; 561 ACPI_STATUS Status; 562 ACPI_NAMESPACE_NODE *DeviceNode; 563 564 565 ACPI_FUNCTION_TRACE (NsInitOneDevice); 566 567 568 /* We are interested in Devices, Processors and ThermalZones only */ 569 570 DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); 571 if ((DeviceNode->Type != ACPI_TYPE_DEVICE) && 572 (DeviceNode->Type != ACPI_TYPE_PROCESSOR) && 573 (DeviceNode->Type != ACPI_TYPE_THERMAL)) 574 { 575 return_ACPI_STATUS (AE_OK); 576 } 577 578 /* 579 * Because of an earlier namespace analysis, all subtrees that contain an 580 * _INI method are tagged. 581 * 582 * If this device subtree does not contain any _INI methods, we 583 * can exit now and stop traversing this entire subtree. 584 */ 585 if (!(DeviceNode->Flags & ANOBJ_SUBTREE_HAS_INI)) 586 { 587 return_ACPI_STATUS (AE_CTRL_DEPTH); 588 } 589 590 /* 591 * Run _STA to determine if this device is present and functioning. We 592 * must know this information for two important reasons (from ACPI spec): 593 * 594 * 1) We can only run _INI if the device is present. 595 * 2) We must abort the device tree walk on this subtree if the device is 596 * not present and is not functional (we will not examine the children) 597 * 598 * The _STA method is not required to be present under the device, we 599 * assume the device is present if _STA does not exist. 600 */ 601 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( 602 ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__STA)); 603 604 Status = AcpiUtExecute_STA (DeviceNode, &Flags); 605 if (ACPI_FAILURE (Status)) 606 { 607 /* Ignore error and move on to next device */ 608 609 return_ACPI_STATUS (AE_OK); 610 } 611 612 /* 613 * Flags == -1 means that _STA was not found. In this case, we assume that 614 * the device is both present and functional. 615 * 616 * From the ACPI spec, description of _STA: 617 * 618 * "If a device object (including the processor object) does not have an 619 * _STA object, then OSPM assumes that all of the above bits are set (in 620 * other words, the device is present, ..., and functioning)" 621 */ 622 if (Flags != ACPI_UINT32_MAX) 623 { 624 WalkInfo->Num_STA++; 625 } 626 627 /* 628 * Examine the PRESENT and FUNCTIONING status bits 629 * 630 * Note: ACPI spec does not seem to specify behavior for the present but 631 * not functioning case, so we assume functioning if present. 632 */ 633 if (!(Flags & ACPI_STA_DEVICE_PRESENT)) 634 { 635 /* Device is not present, we must examine the Functioning bit */ 636 637 if (Flags & ACPI_STA_DEVICE_FUNCTIONING) 638 { 639 /* 640 * Device is not present but is "functioning". In this case, 641 * we will not run _INI, but we continue to examine the children 642 * of this device. 643 * 644 * From the ACPI spec, description of _STA: (Note - no mention 645 * of whether to run _INI or not on the device in question) 646 * 647 * "_STA may return bit 0 clear (not present) with bit 3 set 648 * (device is functional). This case is used to indicate a valid 649 * device for which no device driver should be loaded (for example, 650 * a bridge device.) Children of this device may be present and 651 * valid. OSPM should continue enumeration below a device whose 652 * _STA returns this bit combination" 653 */ 654 return_ACPI_STATUS (AE_OK); 655 } 656 else 657 { 658 /* 659 * Device is not present and is not functioning. We must abort the 660 * walk of this subtree immediately -- don't look at the children 661 * of such a device. 662 * 663 * From the ACPI spec, description of _INI: 664 * 665 * "If the _STA method indicates that the device is not present, 666 * OSPM will not run the _INI and will not examine the children 667 * of the device for _INI methods" 668 */ 669 return_ACPI_STATUS (AE_CTRL_DEPTH); 670 } 671 } 672 673 /* 674 * The device is present or is assumed present if no _STA exists. 675 * Run the _INI if it exists (not required to exist) 676 * 677 * Note: We know there is an _INI within this subtree, but it may not be 678 * under this particular device, it may be lower in the branch. 679 */ 680 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( 681 ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__INI)); 682 683 Info->PrefixNode = DeviceNode; 684 Info->Pathname = METHOD_NAME__INI; 685 Info->Parameters = NULL; 686 Info->Flags = ACPI_IGNORE_RETURN_VALUE; 687 688 Status = AcpiNsEvaluate (Info); 689 if (ACPI_SUCCESS (Status)) 690 { 691 WalkInfo->Num_INI++; 692 693 if ((AcpiDbgLevel <= ACPI_LV_ALL_EXCEPTIONS) && 694 (!(AcpiDbgLevel & ACPI_LV_INFO))) 695 { 696 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 697 } 698 } 699 700 #ifdef ACPI_DEBUG_OUTPUT 701 else if (Status != AE_NOT_FOUND) 702 { 703 /* Ignore error and move on to next device */ 704 705 char *ScopeName = AcpiNsGetExternalPathname (Info->ResolvedNode); 706 707 ACPI_EXCEPTION ((AE_INFO, Status, "during %s._INI execution", 708 ScopeName)); 709 ACPI_FREE (ScopeName); 710 } 711 #endif 712 713 /* Ignore errors from above */ 714 715 Status = AE_OK; 716 717 /* 718 * The _INI method has been run if present; call the Global Initialization 719 * Handler for this device. 720 */ 721 if (AcpiGbl_InitHandler) 722 { 723 Status = AcpiGbl_InitHandler (DeviceNode, ACPI_INIT_DEVICE_INI); 724 } 725 726 return_ACPI_STATUS (Status); 727 } 728