nsinit.c revision 77424
1/****************************************************************************** 2 * 3 * Module Name: nsinit - namespace initialization 4 * $Revision: 25 $ 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" 123 124#define _COMPONENT ACPI_NAMESPACE 125 MODULE_NAME ("nsinit") 126 127 128/******************************************************************************* 129 * 130 * FUNCTION: AcpiNsInitializeObjects 131 * 132 * PARAMETERS: None 133 * 134 * RETURN: Status 135 * 136 * DESCRIPTION: Walk the entire namespace and perform any necessary 137 * initialization on the objects found therein 138 * 139 ******************************************************************************/ 140 141ACPI_STATUS 142AcpiNsInitializeObjects ( 143 void) 144{ 145 ACPI_STATUS Status; 146 ACPI_INIT_WALK_INFO Info; 147 148 149 FUNCTION_TRACE ("NsInitializeObjects"); 150 151 152 DEBUG_PRINTP (TRACE_DISPATCH, 153 ("**** Starting initialization of namespace objects ****\n")); 154 DEBUG_PRINT_RAW (ACPI_OK, ("Completing Region and Field initialization:")); 155 156 157 Info.FieldCount = 0; 158 Info.FieldInit = 0; 159 Info.OpRegionCount = 0; 160 Info.OpRegionInit = 0; 161 Info.ObjectCount = 0; 162 163 164 /* Walk entire namespace from the supplied root */ 165 166 Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 167 ACPI_UINT32_MAX, AcpiNsInitOneObject, 168 &Info, NULL); 169 if (ACPI_FAILURE (Status)) 170 { 171 DEBUG_PRINTP (ACPI_ERROR, ("WalkNamespace failed! %x\n", Status)); 172 } 173 174 DEBUG_PRINT_RAW (ACPI_OK, 175 ("\n%d/%d Regions, %d/%d Fields initialized (%d nodes total)\n", 176 Info.OpRegionInit, Info.OpRegionCount, Info.FieldInit, 177 Info.FieldCount, Info.ObjectCount)); 178 DEBUG_PRINTP (TRACE_DISPATCH, 179 ("%d Control Methods found\n", Info.MethodCount)); 180 DEBUG_PRINTP (TRACE_DISPATCH, 181 ("%d 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 FUNCTION_TRACE ("NsInitializeDevices"); 212 213 214 Info.DeviceCount = 0; 215 Info.Num_STA = 0; 216 Info.Num_INI = 0; 217 218 219 DEBUG_PRINT_RAW (ACPI_OK, ("Executing device _INI methods:")); 220 221 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 222 ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL); 223 224 if (ACPI_FAILURE (Status)) 225 { 226 DEBUG_PRINTP (ACPI_ERROR, ("WalkNamespace failed! %x\n", Status)); 227 } 228 229 230 DEBUG_PRINT_RAW (ACPI_OK, 231 ("\n%d Devices found: %d _STA, %d _INI\n", 232 Info.DeviceCount, Info.Num_STA, Info.Num_INI)); 233 234 return_ACPI_STATUS (Status); 235} 236 237 238/******************************************************************************* 239 * 240 * FUNCTION: AcpiNsInitOneObject 241 * 242 * PARAMETERS: ObjHandle - Node 243 * Level - Current nesting level 244 * Context - Points to a init info struct 245 * ReturnValue - Not used 246 * 247 * RETURN: Status 248 * 249 * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 250 * within the namespace. 251 * 252 * Currently, the only objects that require initialization are: 253 * 1) Methods 254 * 2) Op Regions 255 * 256 ******************************************************************************/ 257 258ACPI_STATUS 259AcpiNsInitOneObject ( 260 ACPI_HANDLE ObjHandle, 261 UINT32 Level, 262 void *Context, 263 void **ReturnValue) 264{ 265 ACPI_OBJECT_TYPE8 Type; 266 ACPI_STATUS Status; 267 ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 268 ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 269 ACPI_OPERAND_OBJECT *ObjDesc; 270 271 272 Info->ObjectCount++; 273 274 275 /* And even then, we are only interested in a few object types */ 276 277 Type = AcpiNsGetType (ObjHandle); 278 ObjDesc = Node->Object; 279 if (!ObjDesc) 280 { 281 return (AE_OK); 282 } 283 284 switch (Type) 285 { 286 287 case ACPI_TYPE_REGION: 288 289 Info->OpRegionCount++; 290 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 291 { 292 break; 293 } 294 295 Info->OpRegionInit++; 296 Status = AcpiDsGetRegionArguments (ObjDesc); 297 if (ACPI_FAILURE (Status)) 298 { 299 DEBUG_PRINT_RAW (ACPI_ERROR, ("\n")); 300 DEBUG_PRINT (ACPI_ERROR, 301 ("%s while getting region arguments [%4.4s]\n", 302 AcpiUtFormatException (Status), &Node->Name)); 303 } 304 305 if (!(AcpiDbgLevel & TRACE_INIT)) 306 { 307 DEBUG_PRINT_RAW (ACPI_OK, (".")); 308 } 309 310 break; 311 312 313 case ACPI_TYPE_BUFFER_FIELD: 314 315 Info->FieldCount++; 316 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 317 { 318 break; 319 } 320 321 Info->FieldInit++; 322 Status = AcpiDsGetBufferFieldArguments (ObjDesc); 323 if (ACPI_FAILURE (Status)) 324 { 325 DEBUG_PRINT_RAW (ACPI_ERROR, ("\n")); 326 DEBUG_PRINT (ACPI_ERROR, 327 ("%s while getting buffer field arguments [%4.4s]\n", 328 AcpiUtFormatException (Status), &Node->Name)); 329 } 330 if (!(AcpiDbgLevel & TRACE_INIT)) 331 { 332 DEBUG_PRINT_RAW (ACPI_OK, (".")); 333 } 334 335 336 break; 337 338 default: 339 break; 340 } 341 342 /* 343 * We ignore errors from above, and always return OK, since 344 * we don't want to abort the walk on a single error. 345 */ 346 return (AE_OK); 347} 348 349 350/******************************************************************************* 351 * 352 * FUNCTION: AcpiNsInitOneDevice 353 * 354 * PARAMETERS: ACPI_WALK_CALLBACK 355 * 356 * RETURN: ACPI_STATUS 357 * 358 * DESCRIPTION: This is called once per device soon after ACPI is enabled 359 * to initialize each device. It determines if the device is 360 * present, and if so, calls _INI. 361 * 362 ******************************************************************************/ 363 364ACPI_STATUS 365AcpiNsInitOneDevice ( 366 ACPI_HANDLE ObjHandle, 367 UINT32 NestingLevel, 368 void *Context, 369 void **ReturnValue) 370{ 371 ACPI_STATUS Status; 372 ACPI_NAMESPACE_NODE *Node; 373 UINT32 Flags; 374 ACPI_DEVICE_WALK_INFO *Info = (ACPI_DEVICE_WALK_INFO *) Context; 375 376 377 FUNCTION_TRACE ("AcpiNsInitOneDevice"); 378 379 380 if (!(AcpiDbgLevel & TRACE_INIT)) 381 { 382 DEBUG_PRINT_RAW (ACPI_OK, (".")); 383 } 384 385 Info->DeviceCount++; 386 387 AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 388 389 Node = AcpiNsConvertHandleToEntry (ObjHandle); 390 if (!Node) 391 { 392 AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 393 return (AE_BAD_PARAMETER); 394 } 395 396 AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 397 398 /* 399 * Run _STA to determine if we can run _INI on the device. 400 */ 401 402 DEBUG_EXEC (AcpiUtDisplayInitPathname (Node, "_STA [Method]")); 403 Status = AcpiUtExecute_STA (Node, &Flags); 404 if (ACPI_FAILURE (Status)) 405 { 406 /* Ignore error and move on to next device */ 407 408 return_ACPI_STATUS (AE_OK); 409 } 410 411 Info->Num_STA++; 412 413 if (!(Flags & 0x01)) 414 { 415 /* don't look at children of a not present device */ 416 417 return_ACPI_STATUS(AE_CTRL_DEPTH); 418 } 419 420 421 /* 422 * The device is present. Run _INI. 423 */ 424 DEBUG_EXEC (AcpiUtDisplayInitPathname (ObjHandle, "_INI [Method]")); 425 Status = AcpiNsEvaluateRelative (ObjHandle, "_INI", NULL, NULL); 426 if (AE_NOT_FOUND == Status) 427 { 428 /* No _INI means device requires no initialization */ 429 430 Status = AE_OK; 431 } 432 433 else if (ACPI_FAILURE (Status)) 434 { 435 /* Ignore error and move on to next device */ 436 437#ifdef ACPI_DEBUG 438 NATIVE_CHAR *ScopeName = AcpiNsGetTablePathname (ObjHandle); 439 440 DEBUG_PRINTP (ACPI_WARN, ("%s._INI failed: %s\n", 441 ScopeName, AcpiUtFormatException (Status))); 442 443 AcpiUtFree (ScopeName); 444#endif 445 } 446 447 else 448 { 449 /* Count of successful INIs */ 450 451 Info->Num_INI++; 452 } 453 454 return_ACPI_STATUS (AE_OK); 455} 456