nsinit.c revision 1.3.2.2
1 1.3.2.2 bouyer /****************************************************************************** 2 1.3.2.2 bouyer * 3 1.3.2.2 bouyer * Module Name: nsinit - namespace initialization 4 1.3.2.2 bouyer * 5 1.3.2.2 bouyer *****************************************************************************/ 6 1.3.2.2 bouyer 7 1.3.2.2 bouyer /* 8 1.3.2.2 bouyer * Copyright (C) 2000 - 2011, Intel Corp. 9 1.3.2.2 bouyer * All rights reserved. 10 1.3.2.2 bouyer * 11 1.3.2.2 bouyer * Redistribution and use in source and binary forms, with or without 12 1.3.2.2 bouyer * modification, are permitted provided that the following conditions 13 1.3.2.2 bouyer * are met: 14 1.3.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 15 1.3.2.2 bouyer * notice, this list of conditions, and the following disclaimer, 16 1.3.2.2 bouyer * without modification. 17 1.3.2.2 bouyer * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.3.2.2 bouyer * substantially similar to the "NO WARRANTY" disclaimer below 19 1.3.2.2 bouyer * ("Disclaimer") and any redistribution must be conditioned upon 20 1.3.2.2 bouyer * including a substantially similar Disclaimer requirement for further 21 1.3.2.2 bouyer * binary redistribution. 22 1.3.2.2 bouyer * 3. Neither the names of the above-listed copyright holders nor the names 23 1.3.2.2 bouyer * of any contributors may be used to endorse or promote products derived 24 1.3.2.2 bouyer * from this software without specific prior written permission. 25 1.3.2.2 bouyer * 26 1.3.2.2 bouyer * Alternatively, this software may be distributed under the terms of the 27 1.3.2.2 bouyer * GNU General Public License ("GPL") version 2 as published by the Free 28 1.3.2.2 bouyer * Software Foundation. 29 1.3.2.2 bouyer * 30 1.3.2.2 bouyer * NO WARRANTY 31 1.3.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.3.2.2 bouyer * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.3.2.2 bouyer * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.3.2.2 bouyer * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.3.2.2 bouyer * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.3.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.3.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.3.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.3.2.2 bouyer * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.3.2.2 bouyer * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.3.2.2 bouyer * POSSIBILITY OF SUCH DAMAGES. 42 1.3.2.2 bouyer */ 43 1.3.2.2 bouyer 44 1.3.2.2 bouyer 45 1.3.2.2 bouyer #define __NSXFINIT_C__ 46 1.3.2.2 bouyer 47 1.3.2.2 bouyer #include "acpi.h" 48 1.3.2.2 bouyer #include "accommon.h" 49 1.3.2.2 bouyer #include "acnamesp.h" 50 1.3.2.2 bouyer #include "acdispat.h" 51 1.3.2.2 bouyer #include "acinterp.h" 52 1.3.2.2 bouyer 53 1.3.2.2 bouyer #define _COMPONENT ACPI_NAMESPACE 54 1.3.2.2 bouyer ACPI_MODULE_NAME ("nsinit") 55 1.3.2.2 bouyer 56 1.3.2.2 bouyer /* Local prototypes */ 57 1.3.2.2 bouyer 58 1.3.2.2 bouyer static ACPI_STATUS 59 1.3.2.2 bouyer AcpiNsInitOneObject ( 60 1.3.2.2 bouyer ACPI_HANDLE ObjHandle, 61 1.3.2.2 bouyer UINT32 Level, 62 1.3.2.2 bouyer void *Context, 63 1.3.2.2 bouyer void **ReturnValue); 64 1.3.2.2 bouyer 65 1.3.2.2 bouyer static ACPI_STATUS 66 1.3.2.2 bouyer AcpiNsInitOneDevice ( 67 1.3.2.2 bouyer ACPI_HANDLE ObjHandle, 68 1.3.2.2 bouyer UINT32 NestingLevel, 69 1.3.2.2 bouyer void *Context, 70 1.3.2.2 bouyer void **ReturnValue); 71 1.3.2.2 bouyer 72 1.3.2.2 bouyer static ACPI_STATUS 73 1.3.2.2 bouyer AcpiNsFindIniMethods ( 74 1.3.2.2 bouyer ACPI_HANDLE ObjHandle, 75 1.3.2.2 bouyer UINT32 NestingLevel, 76 1.3.2.2 bouyer void *Context, 77 1.3.2.2 bouyer void **ReturnValue); 78 1.3.2.2 bouyer 79 1.3.2.2 bouyer 80 1.3.2.2 bouyer /******************************************************************************* 81 1.3.2.2 bouyer * 82 1.3.2.2 bouyer * FUNCTION: AcpiNsInitializeObjects 83 1.3.2.2 bouyer * 84 1.3.2.2 bouyer * PARAMETERS: None 85 1.3.2.2 bouyer * 86 1.3.2.2 bouyer * RETURN: Status 87 1.3.2.2 bouyer * 88 1.3.2.2 bouyer * DESCRIPTION: Walk the entire namespace and perform any necessary 89 1.3.2.2 bouyer * initialization on the objects found therein 90 1.3.2.2 bouyer * 91 1.3.2.2 bouyer ******************************************************************************/ 92 1.3.2.2 bouyer 93 1.3.2.2 bouyer ACPI_STATUS 94 1.3.2.2 bouyer AcpiNsInitializeObjects ( 95 1.3.2.2 bouyer void) 96 1.3.2.2 bouyer { 97 1.3.2.2 bouyer ACPI_STATUS Status; 98 1.3.2.2 bouyer ACPI_INIT_WALK_INFO Info; 99 1.3.2.2 bouyer 100 1.3.2.2 bouyer 101 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (NsInitializeObjects); 102 1.3.2.2 bouyer 103 1.3.2.2 bouyer 104 1.3.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 105 1.3.2.2 bouyer "**** Starting initialization of namespace objects ****\n")); 106 1.3.2.2 bouyer ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 107 1.3.2.2 bouyer "Completing Region/Field/Buffer/Package initialization:")); 108 1.3.2.2 bouyer 109 1.3.2.2 bouyer /* Set all init info to zero */ 110 1.3.2.2 bouyer 111 1.3.2.2 bouyer ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO)); 112 1.3.2.2 bouyer 113 1.3.2.2 bouyer /* Walk entire namespace from the supplied root */ 114 1.3.2.2 bouyer 115 1.3.2.2 bouyer Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 116 1.3.2.2 bouyer ACPI_UINT32_MAX, AcpiNsInitOneObject, NULL, 117 1.3.2.2 bouyer &Info, NULL); 118 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 119 1.3.2.2 bouyer { 120 1.3.2.2 bouyer ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace")); 121 1.3.2.2 bouyer } 122 1.3.2.2 bouyer 123 1.3.2.2 bouyer ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 124 1.3.2.2 bouyer "\nInitialized %u/%u Regions %u/%u Fields %u/%u " 125 1.3.2.2 bouyer "Buffers %u/%u Packages (%u nodes)\n", 126 1.3.2.2 bouyer Info.OpRegionInit, Info.OpRegionCount, 127 1.3.2.2 bouyer Info.FieldInit, Info.FieldCount, 128 1.3.2.2 bouyer Info.BufferInit, Info.BufferCount, 129 1.3.2.2 bouyer Info.PackageInit, Info.PackageCount, Info.ObjectCount)); 130 1.3.2.2 bouyer 131 1.3.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 132 1.3.2.2 bouyer "%u Control Methods found\n", Info.MethodCount)); 133 1.3.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 134 1.3.2.2 bouyer "%u Op Regions found\n", Info.OpRegionCount)); 135 1.3.2.2 bouyer 136 1.3.2.2 bouyer return_ACPI_STATUS (AE_OK); 137 1.3.2.2 bouyer } 138 1.3.2.2 bouyer 139 1.3.2.2 bouyer 140 1.3.2.2 bouyer /******************************************************************************* 141 1.3.2.2 bouyer * 142 1.3.2.2 bouyer * FUNCTION: AcpiNsInitializeDevices 143 1.3.2.2 bouyer * 144 1.3.2.2 bouyer * PARAMETERS: None 145 1.3.2.2 bouyer * 146 1.3.2.2 bouyer * RETURN: ACPI_STATUS 147 1.3.2.2 bouyer * 148 1.3.2.2 bouyer * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices. 149 1.3.2.2 bouyer * This means running _INI on all present devices. 150 1.3.2.2 bouyer * 151 1.3.2.2 bouyer * Note: We install PCI config space handler on region access, 152 1.3.2.2 bouyer * not here. 153 1.3.2.2 bouyer * 154 1.3.2.2 bouyer ******************************************************************************/ 155 1.3.2.2 bouyer 156 1.3.2.2 bouyer ACPI_STATUS 157 1.3.2.2 bouyer AcpiNsInitializeDevices ( 158 1.3.2.2 bouyer void) 159 1.3.2.2 bouyer { 160 1.3.2.2 bouyer ACPI_STATUS Status; 161 1.3.2.2 bouyer ACPI_DEVICE_WALK_INFO Info; 162 1.3.2.2 bouyer 163 1.3.2.2 bouyer 164 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (NsInitializeDevices); 165 1.3.2.2 bouyer 166 1.3.2.2 bouyer 167 1.3.2.2 bouyer /* Init counters */ 168 1.3.2.2 bouyer 169 1.3.2.2 bouyer Info.DeviceCount = 0; 170 1.3.2.2 bouyer Info.Num_STA = 0; 171 1.3.2.2 bouyer Info.Num_INI = 0; 172 1.3.2.2 bouyer 173 1.3.2.2 bouyer ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 174 1.3.2.2 bouyer "Initializing Device/Processor/Thermal objects " 175 1.3.2.2 bouyer "by executing _INI methods:")); 176 1.3.2.2 bouyer 177 1.3.2.2 bouyer /* Tree analysis: find all subtrees that contain _INI methods */ 178 1.3.2.2 bouyer 179 1.3.2.2 bouyer Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 180 1.3.2.2 bouyer ACPI_UINT32_MAX, FALSE, AcpiNsFindIniMethods, NULL, &Info, NULL); 181 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 182 1.3.2.2 bouyer { 183 1.3.2.2 bouyer goto ErrorExit; 184 1.3.2.2 bouyer } 185 1.3.2.2 bouyer 186 1.3.2.2 bouyer /* Allocate the evaluation information block */ 187 1.3.2.2 bouyer 188 1.3.2.2 bouyer Info.EvaluateInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); 189 1.3.2.2 bouyer if (!Info.EvaluateInfo) 190 1.3.2.2 bouyer { 191 1.3.2.2 bouyer Status = AE_NO_MEMORY; 192 1.3.2.2 bouyer goto ErrorExit; 193 1.3.2.2 bouyer } 194 1.3.2.2 bouyer 195 1.3.2.2 bouyer /* 196 1.3.2.2 bouyer * Execute the "global" _INI method that may appear at the root. This 197 1.3.2.2 bouyer * support is provided for Windows compatibility (Vista+) and is not 198 1.3.2.2 bouyer * part of the ACPI specification. 199 1.3.2.2 bouyer */ 200 1.3.2.2 bouyer Info.EvaluateInfo->PrefixNode = AcpiGbl_RootNode; 201 1.3.2.2 bouyer Info.EvaluateInfo->Pathname = __UNCONST(METHOD_NAME__INI); 202 1.3.2.2 bouyer Info.EvaluateInfo->Parameters = NULL; 203 1.3.2.2 bouyer Info.EvaluateInfo->Flags = ACPI_IGNORE_RETURN_VALUE; 204 1.3.2.2 bouyer 205 1.3.2.2 bouyer Status = AcpiNsEvaluate (Info.EvaluateInfo); 206 1.3.2.2 bouyer if (ACPI_SUCCESS (Status)) 207 1.3.2.2 bouyer { 208 1.3.2.2 bouyer Info.Num_INI++; 209 1.3.2.2 bouyer } 210 1.3.2.2 bouyer 211 1.3.2.2 bouyer /* Walk namespace to execute all _INIs on present devices */ 212 1.3.2.2 bouyer 213 1.3.2.2 bouyer Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 214 1.3.2.2 bouyer ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, NULL, &Info, NULL); 215 1.3.2.2 bouyer 216 1.3.2.2 bouyer /* 217 1.3.2.2 bouyer * Any _OSI requests should be completed by now. If the BIOS has 218 1.3.2.2 bouyer * requested any Windows OSI strings, we will always truncate 219 1.3.2.2 bouyer * I/O addresses to 16 bits -- for Windows compatibility. 220 1.3.2.2 bouyer */ 221 1.3.2.2 bouyer if (AcpiGbl_OsiData >= ACPI_OSI_WIN_2000) 222 1.3.2.2 bouyer { 223 1.3.2.2 bouyer AcpiGbl_TruncateIoAddresses = TRUE; 224 1.3.2.2 bouyer } 225 1.3.2.2 bouyer 226 1.3.2.2 bouyer ACPI_FREE (Info.EvaluateInfo); 227 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 228 1.3.2.2 bouyer { 229 1.3.2.2 bouyer goto ErrorExit; 230 1.3.2.2 bouyer } 231 1.3.2.2 bouyer 232 1.3.2.2 bouyer ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, 233 1.3.2.2 bouyer "\nExecuted %u _INI methods requiring %u _STA executions " 234 1.3.2.2 bouyer "(examined %u objects)\n", 235 1.3.2.2 bouyer Info.Num_INI, Info.Num_STA, Info.DeviceCount)); 236 1.3.2.2 bouyer 237 1.3.2.2 bouyer return_ACPI_STATUS (Status); 238 1.3.2.2 bouyer 239 1.3.2.2 bouyer 240 1.3.2.2 bouyer ErrorExit: 241 1.3.2.2 bouyer ACPI_EXCEPTION ((AE_INFO, Status, "During device initialization")); 242 1.3.2.2 bouyer return_ACPI_STATUS (Status); 243 1.3.2.2 bouyer } 244 1.3.2.2 bouyer 245 1.3.2.2 bouyer 246 1.3.2.2 bouyer /******************************************************************************* 247 1.3.2.2 bouyer * 248 1.3.2.2 bouyer * FUNCTION: AcpiNsInitOneObject 249 1.3.2.2 bouyer * 250 1.3.2.2 bouyer * PARAMETERS: ObjHandle - Node 251 1.3.2.2 bouyer * Level - Current nesting level 252 1.3.2.2 bouyer * Context - Points to a init info struct 253 1.3.2.2 bouyer * ReturnValue - Not used 254 1.3.2.2 bouyer * 255 1.3.2.2 bouyer * RETURN: Status 256 1.3.2.2 bouyer * 257 1.3.2.2 bouyer * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object 258 1.3.2.2 bouyer * within the namespace. 259 1.3.2.2 bouyer * 260 1.3.2.2 bouyer * Currently, the only objects that require initialization are: 261 1.3.2.2 bouyer * 1) Methods 262 1.3.2.2 bouyer * 2) Op Regions 263 1.3.2.2 bouyer * 264 1.3.2.2 bouyer ******************************************************************************/ 265 1.3.2.2 bouyer 266 1.3.2.2 bouyer static ACPI_STATUS 267 1.3.2.2 bouyer AcpiNsInitOneObject ( 268 1.3.2.2 bouyer ACPI_HANDLE ObjHandle, 269 1.3.2.2 bouyer UINT32 Level, 270 1.3.2.2 bouyer void *Context, 271 1.3.2.2 bouyer void **ReturnValue) 272 1.3.2.2 bouyer { 273 1.3.2.2 bouyer ACPI_OBJECT_TYPE Type; 274 1.3.2.2 bouyer ACPI_STATUS Status = AE_OK; 275 1.3.2.2 bouyer ACPI_INIT_WALK_INFO *Info = (ACPI_INIT_WALK_INFO *) Context; 276 1.3.2.2 bouyer ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; 277 1.3.2.2 bouyer ACPI_OPERAND_OBJECT *ObjDesc; 278 1.3.2.2 bouyer 279 1.3.2.2 bouyer 280 1.3.2.2 bouyer ACPI_FUNCTION_NAME (NsInitOneObject); 281 1.3.2.2 bouyer 282 1.3.2.2 bouyer 283 1.3.2.2 bouyer Info->ObjectCount++; 284 1.3.2.2 bouyer 285 1.3.2.2 bouyer /* And even then, we are only interested in a few object types */ 286 1.3.2.2 bouyer 287 1.3.2.2 bouyer Type = AcpiNsGetType (ObjHandle); 288 1.3.2.2 bouyer ObjDesc = AcpiNsGetAttachedObject (Node); 289 1.3.2.2 bouyer if (!ObjDesc) 290 1.3.2.2 bouyer { 291 1.3.2.2 bouyer return (AE_OK); 292 1.3.2.2 bouyer } 293 1.3.2.2 bouyer 294 1.3.2.2 bouyer /* Increment counters for object types we are looking for */ 295 1.3.2.2 bouyer 296 1.3.2.2 bouyer switch (Type) 297 1.3.2.2 bouyer { 298 1.3.2.2 bouyer case ACPI_TYPE_REGION: 299 1.3.2.2 bouyer Info->OpRegionCount++; 300 1.3.2.2 bouyer break; 301 1.3.2.2 bouyer 302 1.3.2.2 bouyer case ACPI_TYPE_BUFFER_FIELD: 303 1.3.2.2 bouyer Info->FieldCount++; 304 1.3.2.2 bouyer break; 305 1.3.2.2 bouyer 306 1.3.2.2 bouyer case ACPI_TYPE_LOCAL_BANK_FIELD: 307 1.3.2.2 bouyer Info->FieldCount++; 308 1.3.2.2 bouyer break; 309 1.3.2.2 bouyer 310 1.3.2.2 bouyer case ACPI_TYPE_BUFFER: 311 1.3.2.2 bouyer Info->BufferCount++; 312 1.3.2.2 bouyer break; 313 1.3.2.2 bouyer 314 1.3.2.2 bouyer case ACPI_TYPE_PACKAGE: 315 1.3.2.2 bouyer Info->PackageCount++; 316 1.3.2.2 bouyer break; 317 1.3.2.2 bouyer 318 1.3.2.2 bouyer default: 319 1.3.2.2 bouyer 320 1.3.2.2 bouyer /* No init required, just exit now */ 321 1.3.2.2 bouyer return (AE_OK); 322 1.3.2.2 bouyer } 323 1.3.2.2 bouyer 324 1.3.2.2 bouyer /* If the object is already initialized, nothing else to do */ 325 1.3.2.2 bouyer 326 1.3.2.2 bouyer if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) 327 1.3.2.2 bouyer { 328 1.3.2.2 bouyer return (AE_OK); 329 1.3.2.2 bouyer } 330 1.3.2.2 bouyer 331 1.3.2.2 bouyer /* Must lock the interpreter before executing AML code */ 332 1.3.2.2 bouyer 333 1.3.2.2 bouyer AcpiExEnterInterpreter (); 334 1.3.2.2 bouyer 335 1.3.2.2 bouyer /* 336 1.3.2.2 bouyer * Each of these types can contain executable AML code within the 337 1.3.2.2 bouyer * declaration. 338 1.3.2.2 bouyer */ 339 1.3.2.2 bouyer switch (Type) 340 1.3.2.2 bouyer { 341 1.3.2.2 bouyer case ACPI_TYPE_REGION: 342 1.3.2.2 bouyer 343 1.3.2.2 bouyer Info->OpRegionInit++; 344 1.3.2.2 bouyer Status = AcpiDsGetRegionArguments (ObjDesc); 345 1.3.2.2 bouyer break; 346 1.3.2.2 bouyer 347 1.3.2.2 bouyer case ACPI_TYPE_BUFFER_FIELD: 348 1.3.2.2 bouyer 349 1.3.2.2 bouyer Info->FieldInit++; 350 1.3.2.2 bouyer Status = AcpiDsGetBufferFieldArguments (ObjDesc); 351 1.3.2.2 bouyer break; 352 1.3.2.2 bouyer 353 1.3.2.2 bouyer case ACPI_TYPE_LOCAL_BANK_FIELD: 354 1.3.2.2 bouyer 355 1.3.2.2 bouyer Info->FieldInit++; 356 1.3.2.2 bouyer Status = AcpiDsGetBankFieldArguments (ObjDesc); 357 1.3.2.2 bouyer break; 358 1.3.2.2 bouyer 359 1.3.2.2 bouyer case ACPI_TYPE_BUFFER: 360 1.3.2.2 bouyer 361 1.3.2.2 bouyer Info->BufferInit++; 362 1.3.2.2 bouyer Status = AcpiDsGetBufferArguments (ObjDesc); 363 1.3.2.2 bouyer break; 364 1.3.2.2 bouyer 365 1.3.2.2 bouyer case ACPI_TYPE_PACKAGE: 366 1.3.2.2 bouyer 367 1.3.2.2 bouyer Info->PackageInit++; 368 1.3.2.2 bouyer Status = AcpiDsGetPackageArguments (ObjDesc); 369 1.3.2.2 bouyer break; 370 1.3.2.2 bouyer 371 1.3.2.2 bouyer default: 372 1.3.2.2 bouyer /* No other types can get here */ 373 1.3.2.2 bouyer break; 374 1.3.2.2 bouyer } 375 1.3.2.2 bouyer 376 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 377 1.3.2.2 bouyer { 378 1.3.2.2 bouyer ACPI_EXCEPTION ((AE_INFO, Status, 379 1.3.2.2 bouyer "Could not execute arguments for [%4.4s] (%s)", 380 1.3.2.2 bouyer AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Type))); 381 1.3.2.2 bouyer } 382 1.3.2.2 bouyer 383 1.3.2.2 bouyer /* 384 1.3.2.2 bouyer * Print a dot for each object unless we are going to print the entire 385 1.3.2.2 bouyer * pathname 386 1.3.2.2 bouyer */ 387 1.3.2.2 bouyer if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES)) 388 1.3.2.2 bouyer { 389 1.3.2.2 bouyer ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 390 1.3.2.2 bouyer } 391 1.3.2.2 bouyer 392 1.3.2.2 bouyer /* 393 1.3.2.2 bouyer * We ignore errors from above, and always return OK, since we don't want 394 1.3.2.2 bouyer * to abort the walk on any single error. 395 1.3.2.2 bouyer */ 396 1.3.2.2 bouyer AcpiExExitInterpreter (); 397 1.3.2.2 bouyer return (AE_OK); 398 1.3.2.2 bouyer } 399 1.3.2.2 bouyer 400 1.3.2.2 bouyer 401 1.3.2.2 bouyer /******************************************************************************* 402 1.3.2.2 bouyer * 403 1.3.2.2 bouyer * FUNCTION: AcpiNsFindIniMethods 404 1.3.2.2 bouyer * 405 1.3.2.2 bouyer * PARAMETERS: ACPI_WALK_CALLBACK 406 1.3.2.2 bouyer * 407 1.3.2.2 bouyer * RETURN: ACPI_STATUS 408 1.3.2.2 bouyer * 409 1.3.2.2 bouyer * DESCRIPTION: Called during namespace walk. Finds objects named _INI under 410 1.3.2.2 bouyer * device/processor/thermal objects, and marks the entire subtree 411 1.3.2.2 bouyer * with a SUBTREE_HAS_INI flag. This flag is used during the 412 1.3.2.2 bouyer * subsequent device initialization walk to avoid entire subtrees 413 1.3.2.2 bouyer * that do not contain an _INI. 414 1.3.2.2 bouyer * 415 1.3.2.2 bouyer ******************************************************************************/ 416 1.3.2.2 bouyer 417 1.3.2.2 bouyer static ACPI_STATUS 418 1.3.2.2 bouyer AcpiNsFindIniMethods ( 419 1.3.2.2 bouyer ACPI_HANDLE ObjHandle, 420 1.3.2.2 bouyer UINT32 NestingLevel, 421 1.3.2.2 bouyer void *Context, 422 1.3.2.2 bouyer void **ReturnValue) 423 1.3.2.2 bouyer { 424 1.3.2.2 bouyer ACPI_DEVICE_WALK_INFO *Info = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context); 425 1.3.2.2 bouyer ACPI_NAMESPACE_NODE *Node; 426 1.3.2.2 bouyer ACPI_NAMESPACE_NODE *ParentNode; 427 1.3.2.2 bouyer 428 1.3.2.2 bouyer 429 1.3.2.2 bouyer /* Keep count of device/processor/thermal objects */ 430 1.3.2.2 bouyer 431 1.3.2.2 bouyer Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); 432 1.3.2.2 bouyer if ((Node->Type == ACPI_TYPE_DEVICE) || 433 1.3.2.2 bouyer (Node->Type == ACPI_TYPE_PROCESSOR) || 434 1.3.2.2 bouyer (Node->Type == ACPI_TYPE_THERMAL)) 435 1.3.2.2 bouyer { 436 1.3.2.2 bouyer Info->DeviceCount++; 437 1.3.2.2 bouyer return (AE_OK); 438 1.3.2.2 bouyer } 439 1.3.2.2 bouyer 440 1.3.2.2 bouyer /* We are only looking for methods named _INI */ 441 1.3.2.2 bouyer 442 1.3.2.2 bouyer if (!ACPI_COMPARE_NAME (Node->Name.Ascii, METHOD_NAME__INI)) 443 1.3.2.2 bouyer { 444 1.3.2.2 bouyer return (AE_OK); 445 1.3.2.2 bouyer } 446 1.3.2.2 bouyer 447 1.3.2.2 bouyer /* 448 1.3.2.2 bouyer * The only _INI methods that we care about are those that are 449 1.3.2.2 bouyer * present under Device, Processor, and Thermal objects. 450 1.3.2.2 bouyer */ 451 1.3.2.2 bouyer ParentNode = Node->Parent; 452 1.3.2.2 bouyer switch (ParentNode->Type) 453 1.3.2.2 bouyer { 454 1.3.2.2 bouyer case ACPI_TYPE_DEVICE: 455 1.3.2.2 bouyer case ACPI_TYPE_PROCESSOR: 456 1.3.2.2 bouyer case ACPI_TYPE_THERMAL: 457 1.3.2.2 bouyer 458 1.3.2.2 bouyer /* Mark parent and bubble up the INI present flag to the root */ 459 1.3.2.2 bouyer 460 1.3.2.2 bouyer while (ParentNode) 461 1.3.2.2 bouyer { 462 1.3.2.2 bouyer ParentNode->Flags |= ANOBJ_SUBTREE_HAS_INI; 463 1.3.2.2 bouyer ParentNode = ParentNode->Parent; 464 1.3.2.2 bouyer } 465 1.3.2.2 bouyer break; 466 1.3.2.2 bouyer 467 1.3.2.2 bouyer default: 468 1.3.2.2 bouyer break; 469 1.3.2.2 bouyer } 470 1.3.2.2 bouyer 471 1.3.2.2 bouyer return (AE_OK); 472 1.3.2.2 bouyer } 473 1.3.2.2 bouyer 474 1.3.2.2 bouyer 475 1.3.2.2 bouyer /******************************************************************************* 476 1.3.2.2 bouyer * 477 1.3.2.2 bouyer * FUNCTION: AcpiNsInitOneDevice 478 1.3.2.2 bouyer * 479 1.3.2.2 bouyer * PARAMETERS: ACPI_WALK_CALLBACK 480 1.3.2.2 bouyer * 481 1.3.2.2 bouyer * RETURN: ACPI_STATUS 482 1.3.2.2 bouyer * 483 1.3.2.2 bouyer * DESCRIPTION: This is called once per device soon after ACPI is enabled 484 1.3.2.2 bouyer * to initialize each device. It determines if the device is 485 1.3.2.2 bouyer * present, and if so, calls _INI. 486 1.3.2.2 bouyer * 487 1.3.2.2 bouyer ******************************************************************************/ 488 1.3.2.2 bouyer 489 1.3.2.2 bouyer static ACPI_STATUS 490 1.3.2.2 bouyer AcpiNsInitOneDevice ( 491 1.3.2.2 bouyer ACPI_HANDLE ObjHandle, 492 1.3.2.2 bouyer UINT32 NestingLevel, 493 1.3.2.2 bouyer void *Context, 494 1.3.2.2 bouyer void **ReturnValue) 495 1.3.2.2 bouyer { 496 1.3.2.2 bouyer ACPI_DEVICE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context); 497 1.3.2.2 bouyer ACPI_EVALUATE_INFO *Info = WalkInfo->EvaluateInfo; 498 1.3.2.2 bouyer UINT32 Flags; 499 1.3.2.2 bouyer ACPI_STATUS Status; 500 1.3.2.2 bouyer ACPI_NAMESPACE_NODE *DeviceNode; 501 1.3.2.2 bouyer 502 1.3.2.2 bouyer 503 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (NsInitOneDevice); 504 1.3.2.2 bouyer 505 1.3.2.2 bouyer 506 1.3.2.2 bouyer /* We are interested in Devices, Processors and ThermalZones only */ 507 1.3.2.2 bouyer 508 1.3.2.2 bouyer DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); 509 1.3.2.2 bouyer if ((DeviceNode->Type != ACPI_TYPE_DEVICE) && 510 1.3.2.2 bouyer (DeviceNode->Type != ACPI_TYPE_PROCESSOR) && 511 1.3.2.2 bouyer (DeviceNode->Type != ACPI_TYPE_THERMAL)) 512 1.3.2.2 bouyer { 513 1.3.2.2 bouyer return_ACPI_STATUS (AE_OK); 514 1.3.2.2 bouyer } 515 1.3.2.2 bouyer 516 1.3.2.2 bouyer /* 517 1.3.2.2 bouyer * Because of an earlier namespace analysis, all subtrees that contain an 518 1.3.2.2 bouyer * _INI method are tagged. 519 1.3.2.2 bouyer * 520 1.3.2.2 bouyer * If this device subtree does not contain any _INI methods, we 521 1.3.2.2 bouyer * can exit now and stop traversing this entire subtree. 522 1.3.2.2 bouyer */ 523 1.3.2.2 bouyer if (!(DeviceNode->Flags & ANOBJ_SUBTREE_HAS_INI)) 524 1.3.2.2 bouyer { 525 1.3.2.2 bouyer return_ACPI_STATUS (AE_CTRL_DEPTH); 526 1.3.2.2 bouyer } 527 1.3.2.2 bouyer 528 1.3.2.2 bouyer /* 529 1.3.2.2 bouyer * Run _STA to determine if this device is present and functioning. We 530 1.3.2.2 bouyer * must know this information for two important reasons (from ACPI spec): 531 1.3.2.2 bouyer * 532 1.3.2.2 bouyer * 1) We can only run _INI if the device is present. 533 1.3.2.2 bouyer * 2) We must abort the device tree walk on this subtree if the device is 534 1.3.2.2 bouyer * not present and is not functional (we will not examine the children) 535 1.3.2.2 bouyer * 536 1.3.2.2 bouyer * The _STA method is not required to be present under the device, we 537 1.3.2.2 bouyer * assume the device is present if _STA does not exist. 538 1.3.2.2 bouyer */ 539 1.3.2.2 bouyer ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( 540 1.3.2.2 bouyer ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__STA)); 541 1.3.2.2 bouyer 542 1.3.2.2 bouyer Status = AcpiUtExecute_STA (DeviceNode, &Flags); 543 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 544 1.3.2.2 bouyer { 545 1.3.2.2 bouyer /* Ignore error and move on to next device */ 546 1.3.2.2 bouyer 547 1.3.2.2 bouyer return_ACPI_STATUS (AE_OK); 548 1.3.2.2 bouyer } 549 1.3.2.2 bouyer 550 1.3.2.2 bouyer /* 551 1.3.2.2 bouyer * Flags == -1 means that _STA was not found. In this case, we assume that 552 1.3.2.2 bouyer * the device is both present and functional. 553 1.3.2.2 bouyer * 554 1.3.2.2 bouyer * From the ACPI spec, description of _STA: 555 1.3.2.2 bouyer * 556 1.3.2.2 bouyer * "If a device object (including the processor object) does not have an 557 1.3.2.2 bouyer * _STA object, then OSPM assumes that all of the above bits are set (in 558 1.3.2.2 bouyer * other words, the device is present, ..., and functioning)" 559 1.3.2.2 bouyer */ 560 1.3.2.2 bouyer if (Flags != ACPI_UINT32_MAX) 561 1.3.2.2 bouyer { 562 1.3.2.2 bouyer WalkInfo->Num_STA++; 563 1.3.2.2 bouyer } 564 1.3.2.2 bouyer 565 1.3.2.2 bouyer /* 566 1.3.2.2 bouyer * Examine the PRESENT and FUNCTIONING status bits 567 1.3.2.2 bouyer * 568 1.3.2.2 bouyer * Note: ACPI spec does not seem to specify behavior for the present but 569 1.3.2.2 bouyer * not functioning case, so we assume functioning if present. 570 1.3.2.2 bouyer */ 571 1.3.2.2 bouyer if (!(Flags & ACPI_STA_DEVICE_PRESENT)) 572 1.3.2.2 bouyer { 573 1.3.2.2 bouyer /* Device is not present, we must examine the Functioning bit */ 574 1.3.2.2 bouyer 575 1.3.2.2 bouyer if (Flags & ACPI_STA_DEVICE_FUNCTIONING) 576 1.3.2.2 bouyer { 577 1.3.2.2 bouyer /* 578 1.3.2.2 bouyer * Device is not present but is "functioning". In this case, 579 1.3.2.2 bouyer * we will not run _INI, but we continue to examine the children 580 1.3.2.2 bouyer * of this device. 581 1.3.2.2 bouyer * 582 1.3.2.2 bouyer * From the ACPI spec, description of _STA: (Note - no mention 583 1.3.2.2 bouyer * of whether to run _INI or not on the device in question) 584 1.3.2.2 bouyer * 585 1.3.2.2 bouyer * "_STA may return bit 0 clear (not present) with bit 3 set 586 1.3.2.2 bouyer * (device is functional). This case is used to indicate a valid 587 1.3.2.2 bouyer * device for which no device driver should be loaded (for example, 588 1.3.2.2 bouyer * a bridge device.) Children of this device may be present and 589 1.3.2.2 bouyer * valid. OSPM should continue enumeration below a device whose 590 1.3.2.2 bouyer * _STA returns this bit combination" 591 1.3.2.2 bouyer */ 592 1.3.2.2 bouyer return_ACPI_STATUS (AE_OK); 593 1.3.2.2 bouyer } 594 1.3.2.2 bouyer else 595 1.3.2.2 bouyer { 596 1.3.2.2 bouyer /* 597 1.3.2.2 bouyer * Device is not present and is not functioning. We must abort the 598 1.3.2.2 bouyer * walk of this subtree immediately -- don't look at the children 599 1.3.2.2 bouyer * of such a device. 600 1.3.2.2 bouyer * 601 1.3.2.2 bouyer * From the ACPI spec, description of _INI: 602 1.3.2.2 bouyer * 603 1.3.2.2 bouyer * "If the _STA method indicates that the device is not present, 604 1.3.2.2 bouyer * OSPM will not run the _INI and will not examine the children 605 1.3.2.2 bouyer * of the device for _INI methods" 606 1.3.2.2 bouyer */ 607 1.3.2.2 bouyer return_ACPI_STATUS (AE_CTRL_DEPTH); 608 1.3.2.2 bouyer } 609 1.3.2.2 bouyer } 610 1.3.2.2 bouyer 611 1.3.2.2 bouyer /* 612 1.3.2.2 bouyer * The device is present or is assumed present if no _STA exists. 613 1.3.2.2 bouyer * Run the _INI if it exists (not required to exist) 614 1.3.2.2 bouyer * 615 1.3.2.2 bouyer * Note: We know there is an _INI within this subtree, but it may not be 616 1.3.2.2 bouyer * under this particular device, it may be lower in the branch. 617 1.3.2.2 bouyer */ 618 1.3.2.2 bouyer ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname ( 619 1.3.2.2 bouyer ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__INI)); 620 1.3.2.2 bouyer 621 1.3.2.2 bouyer Info->PrefixNode = DeviceNode; 622 1.3.2.2 bouyer Info->Pathname = __UNCONST(METHOD_NAME__INI); 623 1.3.2.2 bouyer Info->Parameters = NULL; 624 1.3.2.2 bouyer Info->Flags = ACPI_IGNORE_RETURN_VALUE; 625 1.3.2.2 bouyer 626 1.3.2.2 bouyer Status = AcpiNsEvaluate (Info); 627 1.3.2.2 bouyer if (ACPI_SUCCESS (Status)) 628 1.3.2.2 bouyer { 629 1.3.2.2 bouyer WalkInfo->Num_INI++; 630 1.3.2.2 bouyer 631 1.3.2.2 bouyer if ((AcpiDbgLevel <= ACPI_LV_ALL_EXCEPTIONS) && 632 1.3.2.2 bouyer (!(AcpiDbgLevel & ACPI_LV_INFO))) 633 1.3.2.2 bouyer { 634 1.3.2.2 bouyer ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, ".")); 635 1.3.2.2 bouyer } 636 1.3.2.2 bouyer } 637 1.3.2.2 bouyer 638 1.3.2.2 bouyer #ifdef ACPI_DEBUG_OUTPUT 639 1.3.2.2 bouyer else if (Status != AE_NOT_FOUND) 640 1.3.2.2 bouyer { 641 1.3.2.2 bouyer /* Ignore error and move on to next device */ 642 1.3.2.2 bouyer 643 1.3.2.2 bouyer char *ScopeName = AcpiNsGetExternalPathname (Info->ResolvedNode); 644 1.3.2.2 bouyer 645 1.3.2.2 bouyer ACPI_EXCEPTION ((AE_INFO, Status, "during %s._INI execution", 646 1.3.2.2 bouyer ScopeName)); 647 1.3.2.2 bouyer ACPI_FREE (ScopeName); 648 1.3.2.2 bouyer } 649 1.3.2.2 bouyer #endif 650 1.3.2.2 bouyer 651 1.3.2.2 bouyer /* Ignore errors from above */ 652 1.3.2.2 bouyer 653 1.3.2.2 bouyer Status = AE_OK; 654 1.3.2.2 bouyer 655 1.3.2.2 bouyer /* 656 1.3.2.2 bouyer * The _INI method has been run if present; call the Global Initialization 657 1.3.2.2 bouyer * Handler for this device. 658 1.3.2.2 bouyer */ 659 1.3.2.2 bouyer if (AcpiGbl_InitHandler) 660 1.3.2.2 bouyer { 661 1.3.2.2 bouyer Status = AcpiGbl_InitHandler (DeviceNode, ACPI_INIT_DEVICE_INI); 662 1.3.2.2 bouyer } 663 1.3.2.2 bouyer 664 1.3.2.2 bouyer return_ACPI_STATUS (Status); 665 1.3.2.2 bouyer } 666
Indexes created Thu Oct 02 01:09:59 GMT 2025