Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: utxface - External interfaces for "global" ACPI functions |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2005, R. Byron Moore |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include <linux/module.h> |
| 45 | |
| 46 | #include <acpi/acpi.h> |
| 47 | #include <acpi/acevents.h> |
| 48 | #include <acpi/acnamesp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <acpi/acdebug.h> |
| 50 | |
| 51 | #define _COMPONENT ACPI_UTILITIES |
| 52 | ACPI_MODULE_NAME ("utxface") |
| 53 | |
| 54 | |
| 55 | /******************************************************************************* |
| 56 | * |
| 57 | * FUNCTION: acpi_initialize_subsystem |
| 58 | * |
| 59 | * PARAMETERS: None |
| 60 | * |
| 61 | * RETURN: Status |
| 62 | * |
| 63 | * DESCRIPTION: Initializes all global variables. This is the first function |
| 64 | * called, so any early initialization belongs here. |
| 65 | * |
| 66 | ******************************************************************************/ |
| 67 | |
| 68 | acpi_status |
| 69 | acpi_initialize_subsystem ( |
| 70 | void) |
| 71 | { |
| 72 | acpi_status status; |
| 73 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | ACPI_FUNCTION_TRACE ("acpi_initialize_subsystem"); |
| 76 | |
| 77 | |
| 78 | ACPI_DEBUG_EXEC (acpi_ut_init_stack_ptr_trace ()); |
| 79 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | /* Initialize the OS-Dependent layer */ |
| 81 | |
| 82 | status = acpi_os_initialize (); |
| 83 | if (ACPI_FAILURE (status)) { |
| 84 | ACPI_REPORT_ERROR (("OSD failed to initialize, %s\n", |
| 85 | acpi_format_exception (status))); |
| 86 | return_ACPI_STATUS (status); |
| 87 | } |
| 88 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame^] | 89 | /* Initialize all globals used by the subsystem */ |
| 90 | |
| 91 | acpi_ut_init_globals (); |
| 92 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | /* Create the default mutex objects */ |
| 94 | |
| 95 | status = acpi_ut_mutex_initialize (); |
| 96 | if (ACPI_FAILURE (status)) { |
| 97 | ACPI_REPORT_ERROR (("Global mutex creation failure, %s\n", |
| 98 | acpi_format_exception (status))); |
| 99 | return_ACPI_STATUS (status); |
| 100 | } |
| 101 | |
| 102 | /* |
| 103 | * Initialize the namespace manager and |
| 104 | * the root of the namespace tree |
| 105 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | status = acpi_ns_root_initialize (); |
| 107 | if (ACPI_FAILURE (status)) { |
| 108 | ACPI_REPORT_ERROR (("Namespace initialization failure, %s\n", |
| 109 | acpi_format_exception (status))); |
| 110 | return_ACPI_STATUS (status); |
| 111 | } |
| 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | /* If configured, initialize the AML debugger */ |
| 114 | |
| 115 | ACPI_DEBUGGER_EXEC (status = acpi_db_initialize ()); |
| 116 | |
| 117 | return_ACPI_STATUS (status); |
| 118 | } |
| 119 | |
| 120 | |
| 121 | /******************************************************************************* |
| 122 | * |
| 123 | * FUNCTION: acpi_enable_subsystem |
| 124 | * |
| 125 | * PARAMETERS: Flags - Init/enable Options |
| 126 | * |
| 127 | * RETURN: Status |
| 128 | * |
| 129 | * DESCRIPTION: Completes the subsystem initialization including hardware. |
| 130 | * Puts system into ACPI mode if it isn't already. |
| 131 | * |
| 132 | ******************************************************************************/ |
| 133 | |
| 134 | acpi_status |
| 135 | acpi_enable_subsystem ( |
| 136 | u32 flags) |
| 137 | { |
| 138 | acpi_status status = AE_OK; |
| 139 | |
| 140 | |
| 141 | ACPI_FUNCTION_TRACE ("acpi_enable_subsystem"); |
| 142 | |
| 143 | |
| 144 | /* |
| 145 | * We must initialize the hardware before we can enable ACPI. |
| 146 | * The values from the FADT are validated here. |
| 147 | */ |
| 148 | if (!(flags & ACPI_NO_HARDWARE_INIT)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 149 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 150 | "[Init] Initializing ACPI hardware\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
| 152 | status = acpi_hw_initialize (); |
| 153 | if (ACPI_FAILURE (status)) { |
| 154 | return_ACPI_STATUS (status); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | /* Enable ACPI mode */ |
| 159 | |
| 160 | if (!(flags & ACPI_NO_ACPI_ENABLE)) { |
| 161 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); |
| 162 | |
| 163 | acpi_gbl_original_mode = acpi_hw_get_mode(); |
| 164 | |
| 165 | status = acpi_enable (); |
| 166 | if (ACPI_FAILURE (status)) { |
| 167 | ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "acpi_enable failed.\n")); |
| 168 | return_ACPI_STATUS (status); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | /* |
| 173 | * Install the default op_region handlers. These are installed unless |
| 174 | * other handlers have already been installed via the |
| 175 | * install_address_space_handler interface. |
| 176 | */ |
| 177 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 178 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 179 | "[Init] Installing default address space handlers\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
| 181 | status = acpi_ev_install_region_handlers (); |
| 182 | if (ACPI_FAILURE (status)) { |
| 183 | return_ACPI_STATUS (status); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | /* |
| 188 | * Initialize ACPI Event handling (Fixed and General Purpose) |
| 189 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 190 | * NOTE: We must have the hardware AND events initialized before we can |
| 191 | * execute ANY control methods SAFELY. Any control method can require |
| 192 | * ACPI hardware support, so the hardware MUST be initialized before |
| 193 | * execution! |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | */ |
| 195 | if (!(flags & ACPI_NO_EVENT_INIT)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 196 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 197 | "[Init] Initializing ACPI events\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
| 199 | status = acpi_ev_initialize_events (); |
| 200 | if (ACPI_FAILURE (status)) { |
| 201 | return_ACPI_STATUS (status); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | /* Install the SCI handler and Global Lock handler */ |
| 206 | |
| 207 | if (!(flags & ACPI_NO_HANDLER_INIT)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 208 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 209 | "[Init] Installing SCI/GL handlers\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
| 211 | status = acpi_ev_install_xrupt_handlers (); |
| 212 | if (ACPI_FAILURE (status)) { |
| 213 | return_ACPI_STATUS (status); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | return_ACPI_STATUS (status); |
| 218 | } |
| 219 | |
| 220 | /******************************************************************************* |
| 221 | * |
| 222 | * FUNCTION: acpi_initialize_objects |
| 223 | * |
| 224 | * PARAMETERS: Flags - Init/enable Options |
| 225 | * |
| 226 | * RETURN: Status |
| 227 | * |
| 228 | * DESCRIPTION: Completes namespace initialization by initializing device |
| 229 | * objects and executing AML code for Regions, buffers, etc. |
| 230 | * |
| 231 | ******************************************************************************/ |
| 232 | |
| 233 | acpi_status |
| 234 | acpi_initialize_objects ( |
| 235 | u32 flags) |
| 236 | { |
| 237 | acpi_status status = AE_OK; |
| 238 | |
| 239 | |
| 240 | ACPI_FUNCTION_TRACE ("acpi_initialize_objects"); |
| 241 | |
| 242 | |
| 243 | /* |
| 244 | * Run all _REG methods |
| 245 | * |
| 246 | * NOTE: Any objects accessed |
| 247 | * by the _REG methods will be automatically initialized, even if they |
| 248 | * contain executable AML (see call to acpi_ns_initialize_objects below). |
| 249 | */ |
| 250 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 251 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 252 | "[Init] Executing _REG op_region methods\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
| 254 | status = acpi_ev_initialize_op_regions (); |
| 255 | if (ACPI_FAILURE (status)) { |
| 256 | return_ACPI_STATUS (status); |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /* |
| 261 | * Initialize the objects that remain uninitialized. This |
| 262 | * runs the executable AML that may be part of the declaration of these |
| 263 | * objects: operation_regions, buffer_fields, Buffers, and Packages. |
| 264 | */ |
| 265 | if (!(flags & ACPI_NO_OBJECT_INIT)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 266 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 267 | "[Init] Completing Initialization of ACPI Objects\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | status = acpi_ns_initialize_objects (); |
| 270 | if (ACPI_FAILURE (status)) { |
| 271 | return_ACPI_STATUS (status); |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | /* |
| 276 | * Initialize all device objects in the namespace |
| 277 | * This runs the _STA and _INI methods. |
| 278 | */ |
| 279 | if (!(flags & ACPI_NO_DEVICE_INIT)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 280 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 281 | "[Init] Initializing ACPI Devices\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
| 283 | status = acpi_ns_initialize_devices (); |
| 284 | if (ACPI_FAILURE (status)) { |
| 285 | return_ACPI_STATUS (status); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | /* |
| 290 | * Empty the caches (delete the cached objects) on the assumption that |
| 291 | * the table load filled them up more than they will be at runtime -- |
| 292 | * thus wasting non-paged memory. |
| 293 | */ |
| 294 | status = acpi_purge_cached_objects (); |
| 295 | |
| 296 | acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; |
| 297 | return_ACPI_STATUS (status); |
| 298 | } |
| 299 | |
| 300 | |
| 301 | /******************************************************************************* |
| 302 | * |
| 303 | * FUNCTION: acpi_terminate |
| 304 | * |
| 305 | * PARAMETERS: None |
| 306 | * |
| 307 | * RETURN: Status |
| 308 | * |
| 309 | * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources. |
| 310 | * |
| 311 | ******************************************************************************/ |
| 312 | |
| 313 | acpi_status |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 314 | acpi_terminate ( |
| 315 | void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | { |
| 317 | acpi_status status; |
| 318 | |
| 319 | |
| 320 | ACPI_FUNCTION_TRACE ("acpi_terminate"); |
| 321 | |
| 322 | |
| 323 | /* Terminate the AML Debugger if present */ |
| 324 | |
| 325 | ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE); |
| 326 | |
| 327 | /* Shutdown and free all resources */ |
| 328 | |
| 329 | acpi_ut_subsystem_shutdown (); |
| 330 | |
| 331 | |
| 332 | /* Free the mutex objects */ |
| 333 | |
| 334 | acpi_ut_mutex_terminate (); |
| 335 | |
| 336 | |
| 337 | #ifdef ACPI_DEBUGGER |
| 338 | |
| 339 | /* Shut down the debugger */ |
| 340 | |
| 341 | acpi_db_terminate (); |
| 342 | #endif |
| 343 | |
| 344 | /* Now we can shutdown the OS-dependent layer */ |
| 345 | |
| 346 | status = acpi_os_terminate (); |
| 347 | return_ACPI_STATUS (status); |
| 348 | } |
| 349 | |
| 350 | |
| 351 | #ifdef ACPI_FUTURE_USAGE |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 352 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | * |
| 354 | * FUNCTION: acpi_subsystem_status |
| 355 | * |
| 356 | * PARAMETERS: None |
| 357 | * |
| 358 | * RETURN: Status of the ACPI subsystem |
| 359 | * |
| 360 | * DESCRIPTION: Other drivers that use the ACPI subsystem should call this |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 361 | * before making any other calls, to ensure the subsystem |
| 362 | * initialized successfully. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 364 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
| 366 | acpi_status |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 367 | acpi_subsystem_status ( |
| 368 | void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) { |
| 372 | return (AE_OK); |
| 373 | } |
| 374 | else { |
| 375 | return (AE_ERROR); |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 380 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | * |
| 382 | * FUNCTION: acpi_get_system_info |
| 383 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 384 | * PARAMETERS: out_buffer - A buffer to receive the resources for the |
| 385 | * device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | * |
| 387 | * RETURN: Status - the status of the call |
| 388 | * |
| 389 | * DESCRIPTION: This function is called to get information about the current |
| 390 | * state of the ACPI subsystem. It will return system information |
| 391 | * in the out_buffer. |
| 392 | * |
| 393 | * If the function fails an appropriate status will be returned |
| 394 | * and the value of out_buffer is undefined. |
| 395 | * |
| 396 | ******************************************************************************/ |
| 397 | |
| 398 | acpi_status |
| 399 | acpi_get_system_info ( |
| 400 | struct acpi_buffer *out_buffer) |
| 401 | { |
| 402 | struct acpi_system_info *info_ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | acpi_status status; |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 404 | u32 i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
| 406 | |
| 407 | ACPI_FUNCTION_TRACE ("acpi_get_system_info"); |
| 408 | |
| 409 | |
| 410 | /* Parameter validation */ |
| 411 | |
| 412 | status = acpi_ut_validate_buffer (out_buffer); |
| 413 | if (ACPI_FAILURE (status)) { |
| 414 | return_ACPI_STATUS (status); |
| 415 | } |
| 416 | |
| 417 | /* Validate/Allocate/Clear caller buffer */ |
| 418 | |
| 419 | status = acpi_ut_initialize_buffer (out_buffer, sizeof (struct acpi_system_info)); |
| 420 | if (ACPI_FAILURE (status)) { |
| 421 | return_ACPI_STATUS (status); |
| 422 | } |
| 423 | |
| 424 | /* |
| 425 | * Populate the return buffer |
| 426 | */ |
| 427 | info_ptr = (struct acpi_system_info *) out_buffer->pointer; |
| 428 | |
| 429 | info_ptr->acpi_ca_version = ACPI_CA_VERSION; |
| 430 | |
| 431 | /* System flags (ACPI capabilities) */ |
| 432 | |
| 433 | info_ptr->flags = ACPI_SYS_MODE_ACPI; |
| 434 | |
| 435 | /* Timer resolution - 24 or 32 bits */ |
| 436 | |
| 437 | if (!acpi_gbl_FADT) { |
| 438 | info_ptr->timer_resolution = 0; |
| 439 | } |
| 440 | else if (acpi_gbl_FADT->tmr_val_ext == 0) { |
| 441 | info_ptr->timer_resolution = 24; |
| 442 | } |
| 443 | else { |
| 444 | info_ptr->timer_resolution = 32; |
| 445 | } |
| 446 | |
| 447 | /* Clear the reserved fields */ |
| 448 | |
| 449 | info_ptr->reserved1 = 0; |
| 450 | info_ptr->reserved2 = 0; |
| 451 | |
| 452 | /* Current debug levels */ |
| 453 | |
| 454 | info_ptr->debug_layer = acpi_dbg_layer; |
| 455 | info_ptr->debug_level = acpi_dbg_level; |
| 456 | |
| 457 | /* Current status of the ACPI tables, per table type */ |
| 458 | |
| 459 | info_ptr->num_table_types = NUM_ACPI_TABLE_TYPES; |
| 460 | for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) { |
| 461 | info_ptr->table_info[i].count = acpi_gbl_table_lists[i].count; |
| 462 | } |
| 463 | |
| 464 | return_ACPI_STATUS (AE_OK); |
| 465 | } |
| 466 | EXPORT_SYMBOL(acpi_get_system_info); |
| 467 | |
| 468 | |
| 469 | /***************************************************************************** |
| 470 | * |
| 471 | * FUNCTION: acpi_install_initialization_handler |
| 472 | * |
| 473 | * PARAMETERS: Handler - Callback procedure |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 474 | * Function - Not (currently) used, see below |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | * |
| 476 | * RETURN: Status |
| 477 | * |
| 478 | * DESCRIPTION: Install an initialization handler |
| 479 | * |
| 480 | * TBD: When a second function is added, must save the Function also. |
| 481 | * |
| 482 | ****************************************************************************/ |
| 483 | |
| 484 | acpi_status |
| 485 | acpi_install_initialization_handler ( |
| 486 | acpi_init_handler handler, |
| 487 | u32 function) |
| 488 | { |
| 489 | |
| 490 | if (!handler) { |
| 491 | return (AE_BAD_PARAMETER); |
| 492 | } |
| 493 | |
| 494 | if (acpi_gbl_init_handler) { |
| 495 | return (AE_ALREADY_EXISTS); |
| 496 | } |
| 497 | |
| 498 | acpi_gbl_init_handler = handler; |
| 499 | return AE_OK; |
| 500 | } |
| 501 | |
| 502 | #endif /* ACPI_FUTURE_USAGE */ |
| 503 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | /***************************************************************************** |
| 505 | * |
| 506 | * FUNCTION: acpi_purge_cached_objects |
| 507 | * |
| 508 | * PARAMETERS: None |
| 509 | * |
| 510 | * RETURN: Status |
| 511 | * |
| 512 | * DESCRIPTION: Empty all caches (delete the cached objects) |
| 513 | * |
| 514 | ****************************************************************************/ |
| 515 | |
| 516 | acpi_status |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 517 | acpi_purge_cached_objects ( |
| 518 | void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
| 520 | ACPI_FUNCTION_TRACE ("acpi_purge_cached_objects"); |
| 521 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame^] | 522 | (void) acpi_os_purge_cache (acpi_gbl_state_cache); |
| 523 | (void) acpi_os_purge_cache (acpi_gbl_operand_cache); |
| 524 | (void) acpi_os_purge_cache (acpi_gbl_ps_node_cache); |
| 525 | (void) acpi_os_purge_cache (acpi_gbl_ps_node_ext_cache); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | return_ACPI_STATUS (AE_OK); |
| 527 | } |