nsinit.c revision 102550
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 49 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2002, 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_OK, "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_OK, 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 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 179 "%hd Control Methods found\n", Info.MethodCount)); 180 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 181 "%hd Op Regions found\n", Info.OpRegionCount)); 182 183 return_ACPI_STATUS (AE_OK); 184} 185 186 187/******************************************************************************* 188 * 189 * FUNCTION: AcpiNsInitializeDevices 190 * 191 * PARAMETERS: None 192 * 193 * RETURN: ACPI_STATUS 194 * 195 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. 196 * This means running _INI on all present devices. 197 * 198 * Note: We install PCI config space handler on region access, 199 * not here. 200 * 201 ******************************************************************************/ 202 203ACPI_STATUS 204AcpiNsInitializeDevices ( 205 void) 206{ 207 ACPI_STATUS Status; 208 ACPI_DEVICE_WALK_INFO Info; 209 210 211 ACPI_FUNCTION_TRACE ("NsInitializeDevices"); 212 213 214 /* Init counters */ 215 216 Info.DeviceCount = 0; 217 Info.Num_STA = 0; 218 Info.Num_INI = 0; 219 220 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "Executing all Device _STA and_INI methods:")); 221 222 /* Walk namespace for all objects of type Device */ 223 224 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 225 ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL); 226 227 if (ACPI_FAILURE (Status)) 228 { 229 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %s\n", 230 AcpiFormatException (Status))); 231 } 232 233 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, 234 "\n%hd Devices found containing: %hd _STA, %hd _INI methods\n", 235 Info.DeviceCount, Info.Num_STA, Info.Num_INI)); 236 237 return_ACPI_STATUS (Status); 238} 239 240 241/******************************************************************************* 242 * 243 * FUNCTION: AcpiNsInitOneObject 244 * 245 * PARAMETERS: ObjHandle - Node 246 * Level - Current nesting level 247 * Context - Points to a init info struct 248 * ReturnValue - Not used 249 * 250 * RETURN: Status 251 * 252 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 253 * within the namespace. 254 * 255 * Currently, the only objects that require initialization are: 256 * 1) Methods 257 * 2) Op Regions 258 * 259 ******************************************************************************/ 260 261ACPI_STATUS 262AcpiNsInitOneObject ( 263 ACPI_HANDLE ObjHandle, 264 UINT32 Level, 265 void *Context, 266 void **ReturnValue) 267{ 268 ACPI_OBJECT_TYPE Type; 269 ACPI_STATUS Status; 270 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 271 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 272 ACPI_OPERAND_OBJECT *ObjDesc; 273 274 275 ACPI_FUNCTION_NAME ("NsInitOneObject"); 276 277 278 Info->ObjectCount++; 279 280 /* And even then, we are only interested in a few object types */ 281 282 Type = AcpiNsGetType (ObjHandle); 283 ObjDesc = AcpiNsGetAttachedObject (Node); 284 if (!ObjDesc) 285 { 286 return (AE_OK); 287 } 288 289 /* Increment counters for object types we are looking for */ 290 291 switch (Type) 292 { 293 case ACPI_TYPE_REGION: 294 Info->OpRegionCount++; 295 break; 296 297 case ACPI_TYPE_BUFFER_FIELD: 298 Info->FieldCount++; 299 break; 300 301 case ACPI_TYPE_BUFFER: 302 Info->BufferCount++; 303 break; 304 305 case ACPI_TYPE_PACKAGE: 306 Info->PackageCount++; 307 break; 308 309 default: 310 311 /* No init required, just exit now */ 312 return (AE_OK); 313 } 314 315 /* 316 * If the object is already initialized, nothing else to do 317 */ 318 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 319 { 320 return (AE_OK); 321 } 322 323 /* 324 * Must lock the interpreter before executing AML code 325 */ 326 Status = AcpiExEnterInterpreter (); 327 if (ACPI_FAILURE (Status)) 328 { 329 return (Status); 330 } 331 332 /* 333 * Each of these types can contain executable AML code within 334 * the declaration. 335 */ 336 switch (Type) 337 { 338 case ACPI_TYPE_REGION: 339 340 Info->OpRegionInit++; 341 Status = AcpiDsGetRegionArguments (ObjDesc); 342 break; 343 344 345 case ACPI_TYPE_BUFFER_FIELD: 346 347 Info->FieldInit++; 348 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 349 break; 350 351 352 case ACPI_TYPE_BUFFER: 353 354 Info->BufferInit++; 355 Status = AcpiDsGetBufferArguments (ObjDesc); 356 break; 357 358 359 case ACPI_TYPE_PACKAGE: 360 361 Info->PackageInit++; 362 Status = AcpiDsGetPackageArguments (ObjDesc); 363 break; 364 365 default: 366 /* No other types can get here */ 367 break; 368 } 369 370 if (ACPI_FAILURE (Status)) 371 { 372 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); 373 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 374 "Could not execute arguments for [%4.4s] (%s), %s\n", 375 Node->Name.Ascii, AcpiUtGetTypeName (Type), AcpiFormatException (Status))); 376 } 377 378 if (!(AcpiDbgLevel & ACPI_LV_INIT)) 379 { 380 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, ".")); 381 } 382 383 /* 384 * We ignore errors from above, and always return OK, since 385 * we don't want to abort the walk on any single error. 386 */ 387 AcpiExExitInterpreter (); 388 return (AE_OK); 389} 390 391 392/******************************************************************************* 393 * 394 * FUNCTION: AcpiNsInitOneDevice 395 * 396 * PARAMETERS: ACPI_WALK_CALLBACK 397 * 398 * RETURN: ACPI_STATUS 399 * 400 * DESCRIPTION: This is called once per device soon after ACPI is enabled 401 * to initialize each device. It determines if the device is 402 * present, and if so, calls _INI. 403 * 404 ******************************************************************************/ 405 406ACPI_STATUS 407AcpiNsInitOneDevice ( 408 ACPI_HANDLE ObjHandle, 409 UINT32 NestingLevel, 410 void *Context, 411 void **ReturnValue) 412{ 413 ACPI_STATUS Status; 414 ACPI_NAMESPACE_NODE *Node; 415 UINT32 Flags; 416 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 417 418 419 ACPI_FUNCTION_TRACE ("NsInitOneDevice"); 420 421 422 if (!(AcpiDbgLevel & ACPI_LV_INIT)) 423 { 424 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, ".")); 425 } 426 427 Info->DeviceCount++; 428 429 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 430 if (ACPI_FAILURE (Status)) 431 { 432 return_ACPI_STATUS (Status); 433 } 434 435 Node = AcpiNsMapHandleToNode (ObjHandle); 436 if (!Node) 437 { 438 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 439 return_ACPI_STATUS (AE_BAD_PARAMETER); 440 } 441 442 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 443 if (ACPI_FAILURE (Status)) 444 { 445 return_ACPI_STATUS (Status); 446 } 447 448 /* 449 * Run _STA to determine if we can run _INI on the device. 450 */ 451 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (Node, "_STA [Method]")); 452 Status = AcpiUtExecute_STA (Node, &Flags); 453 if (ACPI_FAILURE (Status)) 454 { 455 /* Ignore error and move on to next device */ 456 457 return_ACPI_STATUS (AE_OK); 458 } 459 460 Info->Num_STA++; 461 462 if (!(Flags & 0x01)) 463 { 464 /* don't look at children of a not present device */ 465 466 return_ACPI_STATUS(AE_CTRL_DEPTH); 467 } 468 469 /* 470 * The device is present. Run _INI. 471 */ 472 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ObjHandle, "_INI [Method]")); 473 Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL); 474 if (ACPI_FAILURE (Status)) 475 { 476 /* No _INI (AE_NOT_FOUND) means device requires no initialization */ 477 478 if (Status != AE_NOT_FOUND) 479 { 480 /* Ignore error and move on to next device */ 481 482 #ifdef ACPI_DEBUG_OUTPUT 483 NATIVE_CHAR *ScopeName = AcpiNsGetExternalPathname (ObjHandle); 484 485 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n", 486 ScopeName, AcpiFormatException (Status))); 487 488 ACPI_MEM_FREE (ScopeName); 489 #endif 490 } 491 492 Status = AE_OK; 493 } 494 else 495 { 496 /* Count of successful INIs */ 497 498 Info->Num_INI++; 499 } 500 501 if (AcpiGbl_InitHandler) 502 { 503 /* External initialization handler is present, call it */ 504 505 Status = AcpiGbl_InitHandler (ObjHandle, ACPI_INIT_DEVICE_INI); 506 } 507 508 509 return_ACPI_STATUS (Status); 510} 511