nsinit.c revision 138287
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 62 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2004, 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 * 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 *****************************************************************************/ 116 117 118#define __NSXFINIT_C__ 119 120#include "acpi.h" 121#include "acnamesp.h" 122#include "acdispat.h" 123#include "acinterp.h" 124 125#define _COMPONENT ACPI_NAMESPACE 126 ACPI_MODULE_NAME ("nsinit") 127 128 129/******************************************************************************* 130 * 131 * FUNCTION: AcpiNsInitializeObjects 132 * 133 * PARAMETERS: None 134 * 135 * RETURN: Status 136 * 137 * DESCRIPTION: Walk the entire namespace and perform any necessary 138 * initialization on the objects found therein 139 * 140 ******************************************************************************/ 141 142ACPI_STATUS 143AcpiNsInitializeObjects ( 144 void) 145{ 146 ACPI_STATUS Status; 147 ACPI_INIT_WALK_INFO Info; 148 149 150 ACPI_FUNCTION_TRACE ("NsInitializeObjects"); 151 152 153 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 154 "**** Starting initialization of namespace objects ****\n")); 155 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 156 "Completing Region/Field/Buffer/Package initialization:")); 157 158 /* Set all init info to zero */ 159 160 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); 161 162 /* Walk entire namespace from the supplied root */ 163 164 Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 165 ACPI_UINT32_MAX, AcpiNsInitOneObject, 166 &Info, NULL); 167 if (ACPI_FAILURE (Status)) 168 { 169 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %s\n", 170 AcpiFormatException (Status))); 171 } 172 173 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 174 "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n", 175 Info.OpRegionInit, Info.OpRegionCount, 176 Info.FieldInit, Info.FieldCount, 177 Info.BufferInit, Info.BufferCount, 178 Info.PackageInit, Info.PackageCount, Info.ObjectCount)); 179 180 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 181 "%hd Control Methods found\n", Info.MethodCount)); 182 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 183 "%hd Op Regions found\n", Info.OpRegionCount)); 184 185 return_ACPI_STATUS (AE_OK); 186} 187 188 189/******************************************************************************* 190 * 191 * FUNCTION: AcpiNsInitializeDevices 192 * 193 * PARAMETERS: None 194 * 195 * RETURN: ACPI_STATUS 196 * 197 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. 198 * This means running _INI on all present devices. 199 * 200 * Note: We install PCI config space handler on region access, 201 * not here. 202 * 203 ******************************************************************************/ 204 205ACPI_STATUS 206AcpiNsInitializeDevices ( 207 void) 208{ 209 ACPI_STATUS Status; 210 ACPI_DEVICE_WALK_INFO Info; 211 212 213 ACPI_FUNCTION_TRACE ("NsInitializeDevices"); 214 215 216 /* Init counters */ 217 218 Info.DeviceCount = 0; 219 Info.Num_STA = 0; 220 Info.Num_INI = 0; 221 222 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 223 "Executing all Device _STA and_INI methods:")); 224 225 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 226 if (ACPI_FAILURE (Status)) 227 { 228 return_ACPI_STATUS (Status); 229 } 230 231 /* Walk namespace for all objects */ 232 233 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 234 ACPI_UINT32_MAX, TRUE, AcpiNsInitOneDevice, &Info, NULL); 235 236 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 237 238 if (ACPI_FAILURE (Status)) 239 { 240 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %s\n", 241 AcpiFormatException (Status))); 242 } 243 244 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 245 "\n%hd Devices found containing: %hd _STA, %hd _INI methods\n", 246 Info.DeviceCount, Info.Num_STA, Info.Num_INI)); 247 248 return_ACPI_STATUS (Status); 249} 250 251 252/******************************************************************************* 253 * 254 * FUNCTION: AcpiNsInitOneObject 255 * 256 * PARAMETERS: ObjHandle - Node 257 * Level - Current nesting level 258 * Context - Points to a init info struct 259 * ReturnValue - Not used 260 * 261 * RETURN: Status 262 * 263 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 264 * within the namespace. 265 * 266 * Currently, the only objects that require initialization are: 267 * 1) Methods 268 * 2) Op Regions 269 * 270 ******************************************************************************/ 271 272ACPI_STATUS 273AcpiNsInitOneObject ( 274 ACPI_HANDLE ObjHandle, 275 UINT32 Level, 276 void *Context, 277 void **ReturnValue) 278{ 279 ACPI_OBJECT_TYPE Type; 280 ACPI_STATUS Status; 281 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 282 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 283 ACPI_OPERAND_OBJECT *ObjDesc; 284 285 286 ACPI_FUNCTION_NAME ("NsInitOneObject"); 287 288 289 Info->ObjectCount++; 290 291 /* And even then, we are only interested in a few object types */ 292 293 Type = AcpiNsGetType (ObjHandle); 294 ObjDesc = AcpiNsGetAttachedObject (Node); 295 if (!ObjDesc) 296 { 297 return (AE_OK); 298 } 299 300 /* Increment counters for object types we are looking for */ 301 302 switch (Type) 303 { 304 case ACPI_TYPE_REGION: 305 Info->OpRegionCount++; 306 break; 307 308 case ACPI_TYPE_BUFFER_FIELD: 309 Info->FieldCount++; 310 break; 311 312 case ACPI_TYPE_BUFFER: 313 Info->BufferCount++; 314 break; 315 316 case ACPI_TYPE_PACKAGE: 317 Info->PackageCount++; 318 break; 319 320 default: 321 322 /* No init required, just exit now */ 323 return (AE_OK); 324 } 325 326 /* 327 * If the object is already initialized, nothing else to do 328 */ 329 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 330 { 331 return (AE_OK); 332 } 333 334 /* 335 * Must lock the interpreter before executing AML code 336 */ 337 Status = AcpiExEnterInterpreter (); 338 if (ACPI_FAILURE (Status)) 339 { 340 return (Status); 341 } 342 343 /* 344 * Each of these types can contain executable AML code within the 345 * declaration. 346 */ 347 switch (Type) 348 { 349 case ACPI_TYPE_REGION: 350 351 Info->OpRegionInit++; 352 Status = AcpiDsGetRegionArguments (ObjDesc); 353 break; 354 355 case ACPI_TYPE_BUFFER_FIELD: 356 357 Info->FieldInit++; 358 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 359 break; 360 361 case ACPI_TYPE_BUFFER: 362 363 Info->BufferInit++; 364 Status = AcpiDsGetBufferArguments (ObjDesc); 365 break; 366 367 case ACPI_TYPE_PACKAGE: 368 369 Info->PackageInit++; 370 Status = AcpiDsGetPackageArguments (ObjDesc); 371 break; 372 373 default: 374 /* No other types can get here */ 375 break; 376 } 377 378 if (ACPI_FAILURE (Status)) 379 { 380 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); 381 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 382 "Could not execute arguments for [%4.4s] (%s), %s\n", 383 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Type), 384 AcpiFormatException (Status))); 385 } 386 387 /* 388 * Print a dot for each object unless we are going to print the entire 389 * pathname 390 */ 391 if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES)) 392 { 393 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 394 } 395 396 /* 397 * We ignore errors from above, and always return OK, since we don't want 398 * to abort the walk on any single error. 399 */ 400 AcpiExExitInterpreter (); 401 return (AE_OK); 402} 403 404 405/******************************************************************************* 406 * 407 * FUNCTION: AcpiNsInitOneDevice 408 * 409 * PARAMETERS: ACPI_WALK_CALLBACK 410 * 411 * RETURN: ACPI_STATUS 412 * 413 * DESCRIPTION: This is called once per device soon after ACPI is enabled 414 * to initialize each device. It determines if the device is 415 * present, and if so, calls _INI. 416 * 417 ******************************************************************************/ 418 419ACPI_STATUS 420AcpiNsInitOneDevice ( 421 ACPI_HANDLE ObjHandle, 422 UINT32 NestingLevel, 423 void *Context, 424 void **ReturnValue) 425{ 426 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 427 ACPI_PARAMETER_INFO Pinfo; 428 UINT32 Flags; 429 ACPI_STATUS Status; 430 431 432 ACPI_FUNCTION_TRACE ("NsInitOneDevice"); 433 434 435 Pinfo.Parameters = NULL; 436 Pinfo.ParameterType = ACPI_PARAM_ARGS; 437 438 Pinfo.Node = AcpiNsMapHandleToNode (ObjHandle); 439 if (!Pinfo.Node) 440 { 441 return_ACPI_STATUS (AE_BAD_PARAMETER); 442 } 443 444 /* 445 * We will run _STA/_INI on Devices, Processors and ThermalZones only 446 */ 447 if ((Pinfo.Node->Type != ACPI_TYPE_DEVICE) && 448 (Pinfo.Node->Type != ACPI_TYPE_PROCESSOR) && 449 (Pinfo.Node->Type != ACPI_TYPE_THERMAL)) 450 { 451 return_ACPI_STATUS (AE_OK); 452 } 453 454 if ((AcpiDbgLevel <= ACPI_LV_ALL_EXCEPTIONS) && 455 (!(AcpiDbgLevel & ACPI_LV_INFO))) 456 { 457 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 458 } 459 460 Info->DeviceCount++; 461 462 /* 463 * Run _STA to determine if we can run _INI on the device. 464 */ 465 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Pinfo.Node, "_STA")); 466 Status = AcpiUtExecute_STA (Pinfo.Node, &Flags); 467 468 if (ACPI_FAILURE (Status)) 469 { 470 if (Pinfo.Node->Type == ACPI_TYPE_DEVICE) 471 { 472 /* Ignore error and move on to next device */ 473 474 return_ACPI_STATUS (AE_OK); 475 } 476 477 /* _STA is not required for Processor or ThermalZone objects */ 478 } 479 else 480 { 481 Info->Num_STA++; 482 483 if (!(Flags & 0x01)) 484 { 485 /* Don't look at children of a not present device */ 486 487 return_ACPI_STATUS(AE_CTRL_DEPTH); 488 } 489 } 490 491 /* 492 * The device is present. Run _INI. 493 */ 494 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Pinfo.Node, "_INI")); 495 Status = AcpiNsEvaluateRelative ("_INI", &Pinfo); 496 if (ACPI_FAILURE (Status)) 497 { 498 /* No _INI (AE_NOT_FOUND) means device requires no initialization */ 499 500 if (Status != AE_NOT_FOUND) 501 { 502 /* Ignore error and move on to next device */ 503 504#ifdef ACPI_DEBUG_OUTPUT 505 char *ScopeName = AcpiNsGetExternalPathname (Pinfo.Node); 506 507 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n", 508 ScopeName, AcpiFormatException (Status))); 509 510 ACPI_MEM_FREE (ScopeName); 511#endif 512 } 513 514 Status = AE_OK; 515 } 516 else 517 { 518 /* Count of successful INIs */ 519 520 Info->Num_INI++; 521 } 522 523 if (AcpiGbl_InitHandler) 524 { 525 /* External initialization handler is present, call it */ 526 527 Status = AcpiGbl_InitHandler (Pinfo.Node, ACPI_INIT_DEVICE_INI); 528 } 529 530 return_ACPI_STATUS (Status); 531} 532