nsinit.c revision 80062
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 28 $ 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 DEBUG_PRINTP (TRACE_DISPATCH, 154 ("**** Starting initialization of namespace objects ****\n")); 155 DEBUG_PRINT_RAW (ACPI_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 DEBUG_PRINTP (ACPI_ERROR, ("WalkNamespace failed! %x\n", Status)); 173 } 174 175 DEBUG_PRINT_RAW (ACPI_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 DEBUG_PRINTP (TRACE_DISPATCH, 180 ("%d Control Methods found\n", Info.MethodCount)); 181 DEBUG_PRINTP (TRACE_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 DEBUG_PRINT_RAW (ACPI_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 DEBUG_PRINTP (ACPI_ERROR, ("WalkNamespace failed! %x\n", Status)); 228 } 229 230 231 DEBUG_PRINT_RAW (ACPI_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 Info->ObjectCount++; 274 275 276 /* And even then, we are only interested in a few object types */ 277 278 Type = AcpiNsGetType (ObjHandle); 279 ObjDesc = Node->Object; 280 if (!ObjDesc) 281 { 282 return (AE_OK); 283 } 284 285 if ((Type != ACPI_TYPE_REGION) && 286 (Type != ACPI_TYPE_BUFFER_FIELD)) 287 { 288 return (AE_OK); 289 } 290 291 292 /* 293 * Must lock the interpreter before executing AML code 294 */ 295 Status = AcpiExEnterInterpreter (); 296 if (ACPI_FAILURE (Status)) 297 { 298 return (Status); 299 } 300 301 switch (Type) 302 { 303 304 case ACPI_TYPE_REGION: 305 306 Info->OpRegionCount++; 307 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 308 { 309 break; 310 } 311 312 Info->OpRegionInit++; 313 Status = AcpiDsGetRegionArguments (ObjDesc); 314 if (ACPI_FAILURE (Status)) 315 { 316 DEBUG_PRINT_RAW (ACPI_ERROR, ("\n")); 317 DEBUG_PRINT (ACPI_ERROR, 318 ("%s while getting region arguments [%4.4s]\n", 319 AcpiFormatException (Status), &Node->Name)); 320 } 321 322 if (!(AcpiDbgLevel & TRACE_INIT)) 323 { 324 DEBUG_PRINT_RAW (ACPI_OK, (".")); 325 } 326 327 break; 328 329 330 case ACPI_TYPE_BUFFER_FIELD: 331 332 Info->FieldCount++; 333 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 334 { 335 break; 336 } 337 338 Info->FieldInit++; 339 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 340 if (ACPI_FAILURE (Status)) 341 { 342 DEBUG_PRINT_RAW (ACPI_ERROR, ("\n")); 343 DEBUG_PRINT (ACPI_ERROR, 344 ("%s while getting buffer field arguments [%4.4s]\n", 345 AcpiFormatException (Status), &Node->Name)); 346 } 347 if (!(AcpiDbgLevel & TRACE_INIT)) 348 { 349 DEBUG_PRINT_RAW (ACPI_OK, (".")); 350 } 351 352 353 break; 354 355 default: 356 break; 357 } 358 359 360 /* 361 * We ignore errors from above, and always return OK, since 362 * we don't want to abort the walk on a single error. 363 */ 364 AcpiExExitInterpreter (); 365 return (AE_OK); 366} 367 368 369/******************************************************************************* 370 * 371 * FUNCTION: AcpiNsInitOneDevice 372 * 373 * PARAMETERS: ACPI_WALK_CALLBACK 374 * 375 * RETURN: ACPI_STATUS 376 * 377 * DESCRIPTION: This is called once per device soon after ACPI is enabled 378 * to initialize each device. It determines if the device is 379 * present, and if so, calls _INI. 380 * 381 ******************************************************************************/ 382 383ACPI_STATUS 384AcpiNsInitOneDevice ( 385 ACPI_HANDLE ObjHandle, 386 UINT32 NestingLevel, 387 void *Context, 388 void **ReturnValue) 389{ 390 ACPI_STATUS Status; 391 ACPI_NAMESPACE_NODE *Node; 392 UINT32 Flags; 393 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 394 395 396 FUNCTION_TRACE ("AcpiNsInitOneDevice"); 397 398 399 if (!(AcpiDbgLevel & TRACE_INIT)) 400 { 401 DEBUG_PRINT_RAW (ACPI_OK, (".")); 402 } 403 404 Info->DeviceCount++; 405 406 AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 407 408 Node = AcpiNsConvertHandleToEntry (ObjHandle); 409 if (!Node) 410 { 411 AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 412 return (AE_BAD_PARAMETER); 413 } 414 415 AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 416 417 /* 418 * Run _STA to determine if we can run _INI on the device. 419 */ 420 421 DEBUG_EXEC (AcpiUtDisplayInitPathname (Node, "_STA [Method]")); 422 Status = AcpiUtExecute_STA (Node, &Flags); 423 if (ACPI_FAILURE (Status)) 424 { 425 /* Ignore error and move on to next device */ 426 427 return_ACPI_STATUS (AE_OK); 428 } 429 430 Info->Num_STA++; 431 432 if (!(Flags & 0x01)) 433 { 434 /* don't look at children of a not present device */ 435 436 return_ACPI_STATUS(AE_CTRL_DEPTH); 437 } 438 439 440 /* 441 * The device is present. Run _INI. 442 */ 443 DEBUG_EXEC (AcpiUtDisplayInitPathname (ObjHandle, "_INI [Method]")); 444 Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL); 445 if (AE_NOT_FOUND == Status) 446 { 447 /* No _INI means device requires no initialization */ 448 449 Status = AE_OK; 450 } 451 452 else if (ACPI_FAILURE (Status)) 453 { 454 /* Ignore error and move on to next device */ 455 456#ifdef ACPI_DEBUG 457 NATIVE_CHAR *ScopeName = AcpiNsGetTablePathname (ObjHandle); 458 459 DEBUG_PRINTP (ACPI_WARN, ("%s._INI failed: %s\n", 460 ScopeName, AcpiFormatException (Status))); 461 462 ACPI_MEM_FREE (ScopeName); 463#endif 464 } 465 466 else 467 { 468 /* Count of successful INIs */ 469 470 Info->Num_INI++; 471 } 472 473 return_ACPI_STATUS (AE_OK); 474} 475