nsinit.c revision 114237
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 55 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2003, 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 /* Walk namespace for all objects of type Device */ 224 225 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 226 ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL); 227 228 if (ACPI_FAILURE (Status)) 229 { 230 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %s\n", 231 AcpiFormatException (Status))); 232 } 233 234 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 235 "\n%hd Devices found containing: %hd _STA, %hd _INI methods\n", 236 Info.DeviceCount, Info.Num_STA, Info.Num_INI)); 237 238 return_ACPI_STATUS (Status); 239} 240 241 242/******************************************************************************* 243 * 244 * FUNCTION: AcpiNsInitOneObject 245 * 246 * PARAMETERS: ObjHandle - Node 247 * Level - Current nesting level 248 * Context - Points to a init info struct 249 * ReturnValue - Not used 250 * 251 * RETURN: Status 252 * 253 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 254 * within the namespace. 255 * 256 * Currently, the only objects that require initialization are: 257 * 1) Methods 258 * 2) Op Regions 259 * 260 ******************************************************************************/ 261 262ACPI_STATUS 263AcpiNsInitOneObject ( 264 ACPI_HANDLE ObjHandle, 265 UINT32 Level, 266 void *Context, 267 void **ReturnValue) 268{ 269 ACPI_OBJECT_TYPE Type; 270 ACPI_STATUS Status; 271 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 272 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 273 ACPI_OPERAND_OBJECT *ObjDesc; 274 275 276 ACPI_FUNCTION_NAME ("NsInitOneObject"); 277 278 279 Info->ObjectCount++; 280 281 /* And even then, we are only interested in a few object types */ 282 283 Type = AcpiNsGetType (ObjHandle); 284 ObjDesc = AcpiNsGetAttachedObject (Node); 285 if (!ObjDesc) 286 { 287 return (AE_OK); 288 } 289 290 /* Increment counters for object types we are looking for */ 291 292 switch (Type) 293 { 294 case ACPI_TYPE_REGION: 295 Info->OpRegionCount++; 296 break; 297 298 case ACPI_TYPE_BUFFER_FIELD: 299 Info->FieldCount++; 300 break; 301 302 case ACPI_TYPE_BUFFER: 303 Info->BufferCount++; 304 break; 305 306 case ACPI_TYPE_PACKAGE: 307 Info->PackageCount++; 308 break; 309 310 default: 311 312 /* No init required, just exit now */ 313 return (AE_OK); 314 } 315 316 /* 317 * If the object is already initialized, nothing else to do 318 */ 319 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 320 { 321 return (AE_OK); 322 } 323 324 /* 325 * Must lock the interpreter before executing AML code 326 */ 327 Status = AcpiExEnterInterpreter (); 328 if (ACPI_FAILURE (Status)) 329 { 330 return (Status); 331 } 332 333 /* 334 * Each of these types can contain executable AML code within 335 * the declaration. 336 */ 337 switch (Type) 338 { 339 case ACPI_TYPE_REGION: 340 341 Info->OpRegionInit++; 342 Status = AcpiDsGetRegionArguments (ObjDesc); 343 break; 344 345 346 case ACPI_TYPE_BUFFER_FIELD: 347 348 Info->FieldInit++; 349 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 350 break; 351 352 353 case ACPI_TYPE_BUFFER: 354 355 Info->BufferInit++; 356 Status = AcpiDsGetBufferArguments (ObjDesc); 357 break; 358 359 360 case ACPI_TYPE_PACKAGE: 361 362 Info->PackageInit++; 363 Status = AcpiDsGetPackageArguments (ObjDesc); 364 break; 365 366 default: 367 /* No other types can get here */ 368 break; 369 } 370 371 if (ACPI_FAILURE (Status)) 372 { 373 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); 374 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 375 "Could not execute arguments for [%4.4s] (%s), %s\n", 376 Node->Name.Ascii, AcpiUtGetTypeName (Type), AcpiFormatException (Status))); 377 } 378 379 /* Print a dot for each object unless we are going to print the entire pathname */ 380 381 if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES)) 382 { 383 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 384 } 385 386 /* 387 * We ignore errors from above, and always return OK, since 388 * we don't want to abort the walk on any single error. 389 */ 390 AcpiExExitInterpreter (); 391 return (AE_OK); 392} 393 394 395/******************************************************************************* 396 * 397 * FUNCTION: AcpiNsInitOneDevice 398 * 399 * PARAMETERS: ACPI_WALK_CALLBACK 400 * 401 * RETURN: ACPI_STATUS 402 * 403 * DESCRIPTION: This is called once per device soon after ACPI is enabled 404 * to initialize each device. It determines if the device is 405 * present, and if so, calls _INI. 406 * 407 ******************************************************************************/ 408 409ACPI_STATUS 410AcpiNsInitOneDevice ( 411 ACPI_HANDLE ObjHandle, 412 UINT32 NestingLevel, 413 void *Context, 414 void **ReturnValue) 415{ 416 ACPI_STATUS Status; 417 ACPI_NAMESPACE_NODE *Node; 418 UINT32 Flags; 419 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 420 421 422 ACPI_FUNCTION_TRACE ("NsInitOneDevice"); 423 424 425 if ((AcpiDbgLevel <= ACPI_LV_ALL_EXCEPTIONS) && (!(AcpiDbgLevel & ACPI_LV_INFO))) 426 { 427 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 428 } 429 430 Info->DeviceCount++; 431 432 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 433 if (ACPI_FAILURE (Status)) 434 { 435 return_ACPI_STATUS (Status); 436 } 437 438 Node = AcpiNsMapHandleToNode (ObjHandle); 439 if (!Node) 440 { 441 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 442 return_ACPI_STATUS (AE_BAD_PARAMETER); 443 } 444 445 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 446 if (ACPI_FAILURE (Status)) 447 { 448 return_ACPI_STATUS (Status); 449 } 450 451 /* 452 * Run _STA to determine if we can run _INI on the device. 453 */ 454 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, Node, "_STA")); 455 Status = AcpiUtExecute_STA (Node, &Flags); 456 if (ACPI_FAILURE (Status)) 457 { 458 /* Ignore error and move on to next device */ 459 460 return_ACPI_STATUS (AE_OK); 461 } 462 463 Info->Num_STA++; 464 465 if (!(Flags & 0x01)) 466 { 467 /* don't look at children of a not present device */ 468 469 return_ACPI_STATUS(AE_CTRL_DEPTH); 470 } 471 472 /* 473 * The device is present. Run _INI. 474 */ 475 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ACPI_TYPE_METHOD, ObjHandle, "_INI")); 476 Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL); 477 if (ACPI_FAILURE (Status)) 478 { 479 /* No _INI (AE_NOT_FOUND) means device requires no initialization */ 480 481 if (Status != AE_NOT_FOUND) 482 { 483 /* Ignore error and move on to next device */ 484 485 #ifdef ACPI_DEBUG_OUTPUT 486 char *ScopeName = AcpiNsGetExternalPathname (ObjHandle); 487 488 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n", 489 ScopeName, AcpiFormatException (Status))); 490 491 ACPI_MEM_FREE (ScopeName); 492 #endif 493 } 494 495 Status = AE_OK; 496 } 497 else 498 { 499 /* Count of successful INIs */ 500 501 Info->Num_INI++; 502 } 503 504 if (AcpiGbl_InitHandler) 505 { 506 /* External initialization handler is present, call it */ 507 508 Status = AcpiGbl_InitHandler (ObjHandle, ACPI_INIT_DEVICE_INI); 509 } 510 511 512 return_ACPI_STATUS (Status); 513} 514