nsinit.c revision 85756
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 33 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 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 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 and Field initialization:")); 156 157 158 Info.FieldCount = 0; 159 Info.FieldInit = 0; 160 Info.OpRegionCount = 0; 161 Info.OpRegionInit = 0; 162 Info.ObjectCount = 0; 163 164 165 /* Walk entire namespace from the supplied root */ 166 167 Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 168 ACPI_UINT32_MAX, AcpiNsInitOneObject, 169 &Info, NULL); 170 if (ACPI_FAILURE (Status)) 171 { 172 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %x\n", Status)); 173 } 174 175 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, 176 "\n%d/%d Regions, %d/%d Fields initialized (%d nodes total)\n", 177 Info.OpRegionInit, Info.OpRegionCount, Info.FieldInit, 178 Info.FieldCount, Info.ObjectCount)); 179 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 180 "%d Control Methods found\n", Info.MethodCount)); 181 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 182 "%d 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 FUNCTION_TRACE ("NsInitializeDevices"); 213 214 215 Info.DeviceCount = 0; 216 Info.Num_STA = 0; 217 Info.Num_INI = 0; 218 219 220 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "Executing device _INI methods:")); 221 222 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 223 ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL); 224 225 if (ACPI_FAILURE (Status)) 226 { 227 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "WalkNamespace failed! %x\n", Status)); 228 } 229 230 231 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, 232 "\n%d Devices found: %d _STA, %d _INI\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_TYPE8 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 PROC_NAME ("NsInitOneObject"); 274 275 276 Info->ObjectCount++; 277 278 279 /* And even then, we are only interested in a few object types */ 280 281 Type = AcpiNsGetType (ObjHandle); 282 ObjDesc = Node->Object; 283 if (!ObjDesc) 284 { 285 return (AE_OK); 286 } 287 288 if ((Type != ACPI_TYPE_REGION) && 289 (Type != ACPI_TYPE_BUFFER_FIELD)) 290 { 291 return (AE_OK); 292 } 293 294 295 /* 296 * Must lock the interpreter before executing AML code 297 */ 298 Status = AcpiExEnterInterpreter (); 299 if (ACPI_FAILURE (Status)) 300 { 301 return (Status); 302 } 303 304 switch (Type) 305 { 306 307 case ACPI_TYPE_REGION: 308 309 Info->OpRegionCount++; 310 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 311 { 312 break; 313 } 314 315 Info->OpRegionInit++; 316 Status = AcpiDsGetRegionArguments (ObjDesc); 317 if (ACPI_FAILURE (Status)) 318 { 319 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); 320 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 321 "%s while getting region arguments [%4.4s]\n", 322 AcpiFormatException (Status), (char*)&Node->Name)); 323 } 324 325 if (!(AcpiDbgLevel & ACPI_LV_INIT)) 326 { 327 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, ".")); 328 } 329 330 break; 331 332 333 case ACPI_TYPE_BUFFER_FIELD: 334 335 Info->FieldCount++; 336 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 337 { 338 break; 339 } 340 341 Info->FieldInit++; 342 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 343 if (ACPI_FAILURE (Status)) 344 { 345 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR, "\n")); 346 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 347 "%s while getting buffer field arguments [%4.4s]\n", 348 AcpiFormatException (Status), (char*)&Node->Name)); 349 } 350 if (!(AcpiDbgLevel & ACPI_LV_INIT)) 351 { 352 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, ".")); 353 } 354 355 356 break; 357 358 default: 359 break; 360 } 361 362 363 /* 364 * We ignore errors from above, and always return OK, since 365 * we don't want to abort the walk on a single error. 366 */ 367 AcpiExExitInterpreter (); 368 return (AE_OK); 369} 370 371 372/******************************************************************************* 373 * 374 * FUNCTION: AcpiNsInitOneDevice 375 * 376 * PARAMETERS: ACPI_WALK_CALLBACK 377 * 378 * RETURN: ACPI_STATUS 379 * 380 * DESCRIPTION: This is called once per device soon after ACPI is enabled 381 * to initialize each device. It determines if the device is 382 * present, and if so, calls _INI. 383 * 384 ******************************************************************************/ 385 386ACPI_STATUS 387AcpiNsInitOneDevice ( 388 ACPI_HANDLE ObjHandle, 389 UINT32 NestingLevel, 390 void *Context, 391 void **ReturnValue) 392{ 393 ACPI_STATUS Status; 394 ACPI_NAMESPACE_NODE *Node; 395 UINT32 Flags; 396 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 397 398 399 FUNCTION_TRACE ("NsInitOneDevice"); 400 401 402 if (!(AcpiDbgLevel & ACPI_LV_INIT)) 403 { 404 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, ".")); 405 } 406 407 Info->DeviceCount++; 408 409 AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 410 411 Node = AcpiNsMapHandleToNode (ObjHandle); 412 if (!Node) 413 { 414 AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 415 return (AE_BAD_PARAMETER); 416 } 417 418 AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 419 420 /* 421 * Run _STA to determine if we can run _INI on the device. 422 */ 423 DEBUG_EXEC (AcpiUtDisplayInitPathname (Node, "_STA [Method]")); 424 Status = AcpiUtExecute_STA (Node, &Flags); 425 if (ACPI_FAILURE (Status)) 426 { 427 /* Ignore error and move on to next device */ 428 429 return_ACPI_STATUS (AE_OK); 430 } 431 432 Info->Num_STA++; 433 434 if (!(Flags & 0x01)) 435 { 436 /* don't look at children of a not present device */ 437 438 return_ACPI_STATUS(AE_CTRL_DEPTH); 439 } 440 441 442 /* 443 * The device is present. Run _INI. 444 */ 445 DEBUG_EXEC (AcpiUtDisplayInitPathname (ObjHandle, "_INI [Method]")); 446 Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL); 447 if (AE_NOT_FOUND == Status) 448 { 449 /* No _INI means device requires no initialization */ 450 451 Status = AE_OK; 452 } 453 454 else if (ACPI_FAILURE (Status)) 455 { 456 /* Ignore error and move on to next device */ 457 458#ifdef ACPI_DEBUG 459 NATIVE_CHAR *ScopeName = AcpiNsGetTablePathname (ObjHandle); 460 461 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "%s._INI failed: %s\n", 462 ScopeName, AcpiFormatException (Status))); 463 464 ACPI_MEM_FREE (ScopeName); 465#endif 466 } 467 468 else 469 { 470 /* Count of successful INIs */ 471 472 Info->Num_INI++; 473 } 474 475 return_ACPI_STATUS (AE_OK); 476} 477