nsinit.c revision 99146
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 43 $ 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! %x\n", Status)); 169 } 170 171 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, 172 "\n Initialized %d/%d Regions %d/%d Fields %d/%d Buffers %d/%d Packages (%d nodes)\n", 173 Info.OpRegionInit, Info.OpRegionCount, 174 Info.FieldInit, Info.FieldCount, 175 Info.BufferInit, Info.BufferCount, 176 Info.PackageInit, Info.PackageCount, Info.ObjectCount)); 177 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 178 "%d Control Methods found\n", Info.MethodCount)); 179 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 180 "%d Op Regions found\n", Info.OpRegionCount)); 181 182 return_ACPI_STATUS (AE_OK); 183} 184 185 186/******************************************************************************* 187 * 188 * FUNCTION: AcpiNsInitializeDevices 189 * 190 * PARAMETERS: None 191 * 192 * RETURN: ACPI_STATUS 193 * 194 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. 195 * This means running _INI on all present devices. 196 * 197 * Note: We install PCI config space handler on region access, 198 * not here. 199 * 200 ******************************************************************************/ 201 202ACPI_STATUS 203AcpiNsInitializeDevices ( 204 void) 205{ 206 ACPI_STATUS Status; 207 ACPI_DEVICE_WALK_INFO Info; 208 209 210 ACPI_FUNCTION_TRACE ("NsInitializeDevices"); 211 212 213 /* Init counters */ 214 215 Info.DeviceCount = 0; 216 Info.Num_STA = 0; 217 Info.Num_INI = 0; 218 219 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "Executing all Device _STA and_INI methods:")); 220 221 /* Walk namespace for all objects of type Device */ 222 223 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 224 ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL); 225 226 if (ACPI_FAILURE (Status)) 227 { 228 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %x\n", Status)); 229 } 230 231 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, 232 "\n%d Devices found containing: %d _STA, %d _INI methods\n", 233 Info.DeviceCount, Info.Num_STA, Info.Num_INI)); 234 235 return_ACPI_STATUS (Status); 236} 237 238 239/******************************************************************************* 240 * 241 * FUNCTION: AcpiNsInitOneObject 242 * 243 * PARAMETERS: ObjHandle - Node 244 * Level - Current nesting level 245 * Context - Points to a init info struct 246 * ReturnValue - Not used 247 * 248 * RETURN: Status 249 * 250 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 251 * within the namespace. 252 * 253 * Currently, the only objects that require initialization are: 254 * 1) Methods 255 * 2) Op Regions 256 * 257 ******************************************************************************/ 258 259ACPI_STATUS 260AcpiNsInitOneObject ( 261 ACPI_HANDLE ObjHandle, 262 UINT32 Level, 263 void *Context, 264 void **ReturnValue) 265{ 266 ACPI_OBJECT_TYPE Type; 267 ACPI_STATUS Status; 268 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 269 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 270 ACPI_OPERAND_OBJECT *ObjDesc; 271 272 273 ACPI_FUNCTION_NAME ("NsInitOneObject"); 274 275 276 Info->ObjectCount++; 277 278 /* And even then, we are only interested in a few object types */ 279 280 Type = AcpiNsGetType (ObjHandle); 281 ObjDesc = AcpiNsGetAttachedObject (Node); 282 if (!ObjDesc) 283 { 284 return (AE_OK); 285 } 286 287 /* Increment counters for object types we are looking for */ 288 289 switch (Type) 290 { 291 case ACPI_TYPE_REGION: 292 Info->OpRegionCount++; 293 break; 294 295 case ACPI_TYPE_BUFFER_FIELD: 296 Info->FieldCount++; 297 break; 298 299 case ACPI_TYPE_BUFFER: 300 Info->BufferCount++; 301 break; 302 303 case ACPI_TYPE_PACKAGE: 304 Info->PackageCount++; 305 break; 306 307 default: 308 309 /* No init required, just exit now */ 310 return (AE_OK); 311 } 312 313 /* 314 * If the object is already initialized, nothing else to do 315 */ 316 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 317 { 318 return (AE_OK); 319 } 320 321 /* 322 * Must lock the interpreter before executing AML code 323 */ 324 Status = AcpiExEnterInterpreter (); 325 if (ACPI_FAILURE (Status)) 326 { 327 return (Status); 328 } 329 330 /* 331 * Each of these types can contain executable AML code within 332 * the declaration. 333 */ 334 switch (Type) 335 { 336 case ACPI_TYPE_REGION: 337 338 Info->OpRegionInit++; 339 Status = AcpiDsGetRegionArguments (ObjDesc); 340 break; 341 342 343 case ACPI_TYPE_BUFFER_FIELD: 344 345 Info->FieldInit++; 346 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 347 break; 348 349 350 case ACPI_TYPE_BUFFER: 351 352 Info->BufferInit++; 353 Status = AcpiDsGetBufferArguments (ObjDesc); 354 break; 355 356 357 case ACPI_TYPE_PACKAGE: 358 359 Info->PackageInit++; 360 Status = AcpiDsGetPackageArguments (ObjDesc); 361 break; 362 } 363 364 if (ACPI_FAILURE (Status)) 365 { 366 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); 367 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 368 "Could not execute arguments for [%4.4s] (%s), %s\n", 369 (char *) &Node->Name, AcpiUtGetTypeName (Type), AcpiFormatException (Status))); 370 } 371 372 if (!(AcpiDbgLevel & ACPI_LV_INIT)) 373 { 374 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, ".")); 375 } 376 377 /* 378 * We ignore errors from above, and always return OK, since 379 * we don't want to abort the walk on any single error. 380 */ 381 AcpiExExitInterpreter (); 382 return (AE_OK); 383} 384 385 386/******************************************************************************* 387 * 388 * FUNCTION: AcpiNsInitOneDevice 389 * 390 * PARAMETERS: ACPI_WALK_CALLBACK 391 * 392 * RETURN: ACPI_STATUS 393 * 394 * DESCRIPTION: This is called once per device soon after ACPI is enabled 395 * to initialize each device. It determines if the device is 396 * present, and if so, calls _INI. 397 * 398 ******************************************************************************/ 399 400ACPI_STATUS 401AcpiNsInitOneDevice ( 402 ACPI_HANDLE ObjHandle, 403 UINT32 NestingLevel, 404 void *Context, 405 void **ReturnValue) 406{ 407 ACPI_STATUS Status; 408 ACPI_NAMESPACE_NODE *Node; 409 UINT32 Flags; 410 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 411 412 413 ACPI_FUNCTION_TRACE ("NsInitOneDevice"); 414 415 416 if (!(AcpiDbgLevel & ACPI_LV_INIT)) 417 { 418 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, ".")); 419 } 420 421 Info->DeviceCount++; 422 423 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 424 if (ACPI_FAILURE (Status)) 425 { 426 return_ACPI_STATUS (Status); 427 } 428 429 Node = AcpiNsMapHandleToNode (ObjHandle); 430 if (!Node) 431 { 432 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 433 return_ACPI_STATUS (AE_BAD_PARAMETER); 434 } 435 436 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 437 if (ACPI_FAILURE (Status)) 438 { 439 return_ACPI_STATUS (Status); 440 } 441 442 /* 443 * Run _STA to determine if we can run _INI on the device. 444 */ 445 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (Node, "_STA [Method]")); 446 Status = AcpiUtExecute_STA (Node, &Flags); 447 if (ACPI_FAILURE (Status)) 448 { 449 /* Ignore error and move on to next device */ 450 451 return_ACPI_STATUS (AE_OK); 452 } 453 454 Info->Num_STA++; 455 456 if (!(Flags & 0x01)) 457 { 458 /* don't look at children of a not present device */ 459 460 return_ACPI_STATUS(AE_CTRL_DEPTH); 461 } 462 463 /* 464 * The device is present. Run _INI. 465 */ 466 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (ObjHandle, "_INI [Method]")); 467 Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL); 468 if (AE_NOT_FOUND == Status) 469 { 470 /* No _INI means device requires no initialization */ 471 472 Status = AE_OK; 473 } 474 475 else if (ACPI_FAILURE (Status)) 476 { 477 /* Ignore error and move on to next device */ 478 479#ifdef ACPI_DEBUG 480 NATIVE_CHAR *ScopeName = AcpiNsGetExternalPathname (ObjHandle); 481 482 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n", 483 ScopeName, AcpiFormatException (Status))); 484 485 ACPI_MEM_FREE (ScopeName); 486#endif 487 } 488 489 else 490 { 491 /* Count of successful INIs */ 492 493 Info->Num_INI++; 494 } 495 496 return_ACPI_STATUS (AE_OK); 497} 498