nsinit.c revision 129684
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 60 $ 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, "Completing Region/Field/Buffer/Package initialization:")); 156 157 /* Set all init info to zero */ 158 159 ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); 160 161 /* Walk entire namespace from the supplied root */ 162 163 Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 164 ACPI_UINT32_MAX, AcpiNsInitOneObject, 165 &Info, NULL); 166 if (ACPI_FAILURE (Status)) 167 { 168 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %s\n", 169 AcpiFormatException (Status))); 170 } 171 172 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 173 "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n", 174 Info.OpRegionInit, Info.OpRegionCount, 175 Info.FieldInit, Info.FieldCount, 176 Info.BufferInit, Info.BufferCount, 177 Info.PackageInit, Info.PackageCount, Info.ObjectCount)); 178 179 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 180 "%hd Control Methods found\n", Info.MethodCount)); 181 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 182 "%hd Op Regions found\n", Info.OpRegionCount)); 183 184 return_ACPI_STATUS (AE_OK); 185} 186 187 188/******************************************************************************* 189 * 190 * FUNCTION: AcpiNsInitializeDevices 191 * 192 * PARAMETERS: None 193 * 194 * RETURN: ACPI_STATUS 195 * 196 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. 197 * This means running _INI on all present devices. 198 * 199 * Note: We install PCI config space handler on region access, 200 * not here. 201 * 202 ******************************************************************************/ 203 204ACPI_STATUS 205AcpiNsInitializeDevices ( 206 void) 207{ 208 ACPI_STATUS Status; 209 ACPI_DEVICE_WALK_INFO Info; 210 211 212 ACPI_FUNCTION_TRACE ("NsInitializeDevices"); 213 214 215 /* Init counters */ 216 217 Info.DeviceCount = 0; 218 Info.Num_STA = 0; 219 Info.Num_INI = 0; 220 221 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Executing all Device _STA and_INI methods:")); 222 223 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 224 if (ACPI_FAILURE (Status)) 225 { 226 return_ACPI_STATUS (Status); 227 } 228 229 /* Walk namespace for all objects */ 230 231 Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 232 ACPI_UINT32_MAX, TRUE, AcpiNsInitOneDevice, &Info, NULL); 233 234 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 235 236 if (ACPI_FAILURE (Status)) 237 { 238 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %s\n", 239 AcpiFormatException (Status))); 240 } 241 242 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 243 "\n%hd Devices found containing: %hd _STA, %hd _INI methods\n", 244 Info.DeviceCount, Info.Num_STA, Info.Num_INI)); 245 246 return_ACPI_STATUS (Status); 247} 248 249 250/******************************************************************************* 251 * 252 * FUNCTION: AcpiNsInitOneObject 253 * 254 * PARAMETERS: ObjHandle - Node 255 * Level - Current nesting level 256 * Context - Points to a init info struct 257 * ReturnValue - Not used 258 * 259 * RETURN: Status 260 * 261 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 262 * within the namespace. 263 * 264 * Currently, the only objects that require initialization are: 265 * 1) Methods 266 * 2) Op Regions 267 * 268 ******************************************************************************/ 269 270ACPI_STATUS 271AcpiNsInitOneObject ( 272 ACPI_HANDLE ObjHandle, 273 UINT32 Level, 274 void *Context, 275 void **ReturnValue) 276{ 277 ACPI_OBJECT_TYPE Type; 278 ACPI_STATUS Status; 279 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 280 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 281 ACPI_OPERAND_OBJECT *ObjDesc; 282 283 284 ACPI_FUNCTION_NAME ("NsInitOneObject"); 285 286 287 Info->ObjectCount++; 288 289 /* And even then, we are only interested in a few object types */ 290 291 Type = AcpiNsGetType (ObjHandle); 292 ObjDesc = AcpiNsGetAttachedObject (Node); 293 if (!ObjDesc) 294 { 295 return (AE_OK); 296 } 297 298 /* Increment counters for object types we are looking for */ 299 300 switch (Type) 301 { 302 case ACPI_TYPE_REGION: 303 Info->OpRegionCount++; 304 break; 305 306 case ACPI_TYPE_BUFFER_FIELD: 307 Info->FieldCount++; 308 break; 309 310 case ACPI_TYPE_BUFFER: 311 Info->BufferCount++; 312 break; 313 314 case ACPI_TYPE_PACKAGE: 315 Info->PackageCount++; 316 break; 317 318 default: 319 320 /* No init required, just exit now */ 321 return (AE_OK); 322 } 323 324 /* 325 * If the object is already initialized, nothing else to do 326 */ 327 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 328 { 329 return (AE_OK); 330 } 331 332 /* 333 * Must lock the interpreter before executing AML code 334 */ 335 Status = AcpiExEnterInterpreter (); 336 if (ACPI_FAILURE (Status)) 337 { 338 return (Status); 339 } 340 341 /* 342 * Each of these types can contain executable AML code within 343 * the declaration. 344 */ 345 switch (Type) 346 { 347 case ACPI_TYPE_REGION: 348 349 Info->OpRegionInit++; 350 Status = AcpiDsGetRegionArguments (ObjDesc); 351 break; 352 353 354 case ACPI_TYPE_BUFFER_FIELD: 355 356 Info->FieldInit++; 357 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 358 break; 359 360 361 case ACPI_TYPE_BUFFER: 362 363 Info->BufferInit++; 364 Status = AcpiDsGetBufferArguments (ObjDesc); 365 break; 366 367 368 case ACPI_TYPE_PACKAGE: 369 370 Info->PackageInit++; 371 Status = AcpiDsGetPackageArguments (ObjDesc); 372 break; 373 374 default: 375 /* No other types can get here */ 376 break; 377 } 378 379 if (ACPI_FAILURE (Status)) 380 { 381 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); 382 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 383 "Could not execute arguments for [%4.4s] (%s), %s\n", 384 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Type), 385 AcpiFormatException (Status))); 386 } 387 388 /* Print a dot for each object unless we are going to print the entire pathname */ 389 390 if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES)) 391 { 392 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 393 } 394 395 /* 396 * We ignore errors from above, and always return OK, since 397 * we don't want to abort the walk on any single error. 398 */ 399 AcpiExExitInterpreter (); 400 return (AE_OK); 401} 402 403 404/******************************************************************************* 405 * 406 * FUNCTION: AcpiNsInitOneDevice 407 * 408 * PARAMETERS: ACPI_WALK_CALLBACK 409 * 410 * RETURN: ACPI_STATUS 411 * 412 * DESCRIPTION: This is called once per device soon after ACPI is enabled 413 * to initialize each device. It determines if the device is 414 * present, and if so, calls _INI. 415 * 416 ******************************************************************************/ 417 418ACPI_STATUS 419AcpiNsInitOneDevice ( 420 ACPI_HANDLE ObjHandle, 421 UINT32 NestingLevel, 422 void *Context, 423 void **ReturnValue) 424{ 425 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 426 ACPI_PARAMETER_INFO Pinfo; 427 UINT32 Flags; 428 ACPI_STATUS Status; 429 430 431 ACPI_FUNCTION_TRACE ("NsInitOneDevice"); 432 433 434 Pinfo.Parameters = NULL; 435 Pinfo.ParameterType = ACPI_PARAM_ARGS; 436 437 Pinfo.Node = AcpiNsMapHandleToNode (ObjHandle); 438 if (!Pinfo.Node) 439 { 440 return_ACPI_STATUS (AE_BAD_PARAMETER); 441 } 442 443 /* 444 * We will run _STA/_INI on Devices, Processors and ThermalZones only 445 */ 446 if ((Pinfo.Node->Type != ACPI_TYPE_DEVICE) && 447 (Pinfo.Node->Type != ACPI_TYPE_PROCESSOR) && 448 (Pinfo.Node->Type != ACPI_TYPE_THERMAL)) 449 { 450 return_ACPI_STATUS (AE_OK); 451 } 452 453 if ((AcpiDbgLevel <= ACPI_LV_ALL_EXCEPTIONS) && (!(AcpiDbgLevel & ACPI_LV_INFO))) 454 { 455 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 456 } 457 458 Info->DeviceCount++; 459 460 /* 461 * Run _STA to determine if we can run _INI on the device. 462 */ 463 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Pinfo.Node, "_STA")); 464 Status = AcpiUtExecute_STA (Pinfo.Node, &Flags); 465 466 if (ACPI_FAILURE (Status)) 467 { 468 if (Pinfo.Node->Type == ACPI_TYPE_DEVICE) 469 { 470 /* Ignore error and move on to next device */ 471 472 return_ACPI_STATUS (AE_OK); 473 } 474 475 /* _STA is not required for Processor or ThermalZone objects */ 476 } 477 else 478 { 479 Info->Num_STA++; 480 481 if (!(Flags & 0x01)) 482 { 483 /* Don't look at children of a not present device */ 484 485 return_ACPI_STATUS(AE_CTRL_DEPTH); 486 } 487 } 488 489 /* 490 * The device is present. Run _INI. 491 */ 492 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Pinfo.Node, "_INI")); 493 Status = AcpiNsEvaluateRelative ("_INI", &Pinfo); 494 if (ACPI_FAILURE (Status)) 495 { 496 /* No _INI (AE_NOT_FOUND) means device requires no initialization */ 497 498 if (Status != AE_NOT_FOUND) 499 { 500 /* Ignore error and move on to next device */ 501 502#ifdef ACPI_DEBUG_OUTPUT 503 char *ScopeName = AcpiNsGetExternalPathname (Pinfo.Node); 504 505 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n", 506 ScopeName, AcpiFormatException (Status))); 507 508 ACPI_MEM_FREE (ScopeName); 509#endif 510 } 511 512 Status = AE_OK; 513 } 514 else 515 { 516 /* Count of successful INIs */ 517 518 Info->Num_INI++; 519 } 520 521 if (AcpiGbl_InitHandler) 522 { 523 /* External initialization handler is present, call it */ 524 525 Status = AcpiGbl_InitHandler (Pinfo.Node, ACPI_INIT_DEVICE_INI); 526 } 527 528 529 return_ACPI_STATUS (Status); 530} 531