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 |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 52 | ACPI_MODULE_NAME("utxface") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | /******************************************************************************* |
| 55 | * |
| 56 | * FUNCTION: acpi_initialize_subsystem |
| 57 | * |
| 58 | * PARAMETERS: None |
| 59 | * |
| 60 | * RETURN: Status |
| 61 | * |
| 62 | * DESCRIPTION: Initializes all global variables. This is the first function |
| 63 | * called, so any early initialization belongs here. |
| 64 | * |
| 65 | ******************************************************************************/ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 66 | acpi_status acpi_initialize_subsystem(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 68 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 70 | ACPI_FUNCTION_TRACE("acpi_initialize_subsystem"); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 71 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 72 | ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | /* Initialize the OS-Dependent layer */ |
| 75 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | status = acpi_os_initialize(); |
| 77 | if (ACPI_FAILURE(status)) { |
| 78 | ACPI_REPORT_ERROR(("OSD failed to initialize, %s\n", |
| 79 | acpi_format_exception(status))); |
| 80 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | } |
| 82 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 83 | /* Initialize all globals used by the subsystem */ |
| 84 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 85 | acpi_ut_init_globals(); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | /* Create the default mutex objects */ |
| 88 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 89 | status = acpi_ut_mutex_initialize(); |
| 90 | if (ACPI_FAILURE(status)) { |
| 91 | ACPI_REPORT_ERROR(("Global mutex creation failure, %s\n", |
| 92 | acpi_format_exception(status))); |
| 93 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | } |
| 95 | |
| 96 | /* |
| 97 | * Initialize the namespace manager and |
| 98 | * the root of the namespace tree |
| 99 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 100 | status = acpi_ns_root_initialize(); |
| 101 | if (ACPI_FAILURE(status)) { |
| 102 | ACPI_REPORT_ERROR(("Namespace initialization failure, %s\n", |
| 103 | acpi_format_exception(status))); |
| 104 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | } |
| 106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | /* If configured, initialize the AML debugger */ |
| 108 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 109 | ACPI_DEBUGGER_EXEC(status = acpi_db_initialize()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 111 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | } |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | /******************************************************************************* |
| 115 | * |
| 116 | * FUNCTION: acpi_enable_subsystem |
| 117 | * |
| 118 | * PARAMETERS: Flags - Init/enable Options |
| 119 | * |
| 120 | * RETURN: Status |
| 121 | * |
| 122 | * DESCRIPTION: Completes the subsystem initialization including hardware. |
| 123 | * Puts system into ACPI mode if it isn't already. |
| 124 | * |
| 125 | ******************************************************************************/ |
| 126 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 127 | acpi_status acpi_enable_subsystem(u32 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 129 | acpi_status status = AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 131 | ACPI_FUNCTION_TRACE("acpi_enable_subsystem"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | |
| 133 | /* |
| 134 | * We must initialize the hardware before we can enable ACPI. |
| 135 | * The values from the FADT are validated here. |
| 136 | */ |
| 137 | if (!(flags & ACPI_NO_HARDWARE_INIT)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 138 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 139 | "[Init] Initializing ACPI hardware\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 141 | status = acpi_hw_initialize(); |
| 142 | if (ACPI_FAILURE(status)) { |
| 143 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } |
| 145 | } |
| 146 | |
| 147 | /* Enable ACPI mode */ |
| 148 | |
| 149 | if (!(flags & ACPI_NO_ACPI_ENABLE)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 150 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 151 | "[Init] Going into ACPI mode\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | |
| 153 | acpi_gbl_original_mode = acpi_hw_get_mode(); |
| 154 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 155 | status = acpi_enable(); |
| 156 | if (ACPI_FAILURE(status)) { |
| 157 | ACPI_DEBUG_PRINT((ACPI_DB_WARN, |
| 158 | "acpi_enable failed.\n")); |
| 159 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | } |
| 161 | } |
| 162 | |
| 163 | /* |
| 164 | * Install the default op_region handlers. These are installed unless |
| 165 | * other handlers have already been installed via the |
| 166 | * install_address_space_handler interface. |
| 167 | */ |
| 168 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 169 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 170 | "[Init] Installing default address space handlers\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 172 | status = acpi_ev_install_region_handlers(); |
| 173 | if (ACPI_FAILURE(status)) { |
| 174 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | } |
| 176 | } |
| 177 | |
| 178 | /* |
| 179 | * Initialize ACPI Event handling (Fixed and General Purpose) |
| 180 | * |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame^] | 181 | * Note1: We must have the hardware and events initialized before we can |
| 182 | * execute any control methods safely. Any control method can require |
| 183 | * ACPI hardware support, so the hardware must be fully initialized before |
| 184 | * any method execution! |
| 185 | * |
| 186 | * Note2: Fixed events are initialized and enabled here. GPEs are |
| 187 | * initialized, but cannot be enabled until after the hardware is |
| 188 | * completely initialized (SCI and global_lock activated) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | */ |
| 190 | if (!(flags & ACPI_NO_EVENT_INIT)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 191 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 192 | "[Init] Initializing ACPI events\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 194 | status = acpi_ev_initialize_events(); |
| 195 | if (ACPI_FAILURE(status)) { |
| 196 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
| 198 | } |
| 199 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame^] | 200 | /* |
| 201 | * Install the SCI handler and Global Lock handler. This completes the |
| 202 | * hardware initialization. |
| 203 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | if (!(flags & ACPI_NO_HANDLER_INIT)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 205 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 206 | "[Init] Installing SCI/GL handlers\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 208 | status = acpi_ev_install_xrupt_handlers(); |
| 209 | if (ACPI_FAILURE(status)) { |
| 210 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } |
| 212 | } |
| 213 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame^] | 214 | /* |
| 215 | * Complete the GPE initialization for the GPE blocks defined in the FADT |
| 216 | * (GPE block 0 and 1). |
| 217 | * |
| 218 | * Note1: This is where the _PRW methods are executed for the GPEs. These |
| 219 | * methods can only be executed after the SCI and Global Lock handlers are |
| 220 | * installed and initialized. |
| 221 | * |
| 222 | * Note2: Currently, there seems to be no need to run the _REG methods |
| 223 | * before execution of the _PRW methods and enabling of the GPEs. |
| 224 | */ |
| 225 | if (!(flags & ACPI_NO_EVENT_INIT)) { |
| 226 | status = acpi_ev_install_fadt_gpes(); |
| 227 | if (ACPI_FAILURE(status)) { |
| 228 | return (status); |
| 229 | } |
| 230 | } |
| 231 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 232 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | /******************************************************************************* |
| 236 | * |
| 237 | * FUNCTION: acpi_initialize_objects |
| 238 | * |
| 239 | * PARAMETERS: Flags - Init/enable Options |
| 240 | * |
| 241 | * RETURN: Status |
| 242 | * |
| 243 | * DESCRIPTION: Completes namespace initialization by initializing device |
| 244 | * objects and executing AML code for Regions, buffers, etc. |
| 245 | * |
| 246 | ******************************************************************************/ |
| 247 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 248 | acpi_status acpi_initialize_objects(u32 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 250 | acpi_status status = AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 252 | ACPI_FUNCTION_TRACE("acpi_initialize_objects"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
| 254 | /* |
| 255 | * Run all _REG methods |
| 256 | * |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame^] | 257 | * Note: Any objects accessed by the _REG methods will be automatically |
| 258 | * initialized, even if they contain executable AML (see the call to |
| 259 | * acpi_ns_initialize_objects below). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | */ |
| 261 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 262 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 263 | "[Init] Executing _REG op_region methods\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 265 | status = acpi_ev_initialize_op_regions(); |
| 266 | if (ACPI_FAILURE(status)) { |
| 267 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | } |
| 269 | } |
| 270 | |
| 271 | /* |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame^] | 272 | * Initialize the objects that remain uninitialized. This runs the |
| 273 | * executable AML that may be part of the declaration of these objects: |
| 274 | * operation_regions, buffer_fields, Buffers, and Packages. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | */ |
| 276 | if (!(flags & ACPI_NO_OBJECT_INIT)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 277 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 278 | "[Init] Completing Initialization of ACPI Objects\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 280 | status = acpi_ns_initialize_objects(); |
| 281 | if (ACPI_FAILURE(status)) { |
| 282 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | } |
| 284 | } |
| 285 | |
| 286 | /* |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame^] | 287 | * Initialize all device objects in the namespace. This runs the device |
| 288 | * _STA and _INI methods. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | */ |
| 290 | if (!(flags & ACPI_NO_DEVICE_INIT)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 291 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 292 | "[Init] Initializing ACPI Devices\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 294 | status = acpi_ns_initialize_devices(); |
| 295 | if (ACPI_FAILURE(status)) { |
| 296 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | } |
| 299 | |
| 300 | /* |
| 301 | * Empty the caches (delete the cached objects) on the assumption that |
| 302 | * the table load filled them up more than they will be at runtime -- |
| 303 | * thus wasting non-paged memory. |
| 304 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 305 | status = acpi_purge_cached_objects(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
| 307 | acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 308 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | } |
| 310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | /******************************************************************************* |
| 312 | * |
| 313 | * FUNCTION: acpi_terminate |
| 314 | * |
| 315 | * PARAMETERS: None |
| 316 | * |
| 317 | * RETURN: Status |
| 318 | * |
| 319 | * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources. |
| 320 | * |
| 321 | ******************************************************************************/ |
| 322 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 323 | acpi_status acpi_terminate(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 325 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 327 | ACPI_FUNCTION_TRACE("acpi_terminate"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
| 329 | /* Terminate the AML Debugger if present */ |
| 330 | |
| 331 | ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE); |
| 332 | |
| 333 | /* Shutdown and free all resources */ |
| 334 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 335 | acpi_ut_subsystem_shutdown(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
| 337 | /* Free the mutex objects */ |
| 338 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 339 | acpi_ut_mutex_terminate(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
| 341 | #ifdef ACPI_DEBUGGER |
| 342 | |
| 343 | /* Shut down the debugger */ |
| 344 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 345 | acpi_db_terminate(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | #endif |
| 347 | |
| 348 | /* Now we can shutdown the OS-dependent layer */ |
| 349 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 350 | status = acpi_os_terminate(); |
| 351 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | #ifdef ACPI_FUTURE_USAGE |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 355 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | * |
| 357 | * FUNCTION: acpi_subsystem_status |
| 358 | * |
| 359 | * PARAMETERS: None |
| 360 | * |
| 361 | * RETURN: Status of the ACPI subsystem |
| 362 | * |
| 363 | * DESCRIPTION: Other drivers that use the ACPI subsystem should call this |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 364 | * before making any other calls, to ensure the subsystem |
| 365 | * initialized successfully. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 367 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 369 | acpi_status acpi_subsystem_status(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) { |
| 373 | return (AE_OK); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 374 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | return (AE_ERROR); |
| 376 | } |
| 377 | } |
| 378 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 379 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | * |
| 381 | * FUNCTION: acpi_get_system_info |
| 382 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 383 | * PARAMETERS: out_buffer - A buffer to receive the resources for the |
| 384 | * device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | * |
| 386 | * RETURN: Status - the status of the call |
| 387 | * |
| 388 | * DESCRIPTION: This function is called to get information about the current |
| 389 | * state of the ACPI subsystem. It will return system information |
| 390 | * in the out_buffer. |
| 391 | * |
| 392 | * If the function fails an appropriate status will be returned |
| 393 | * and the value of out_buffer is undefined. |
| 394 | * |
| 395 | ******************************************************************************/ |
| 396 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 397 | acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 399 | struct acpi_system_info *info_ptr; |
| 400 | acpi_status status; |
| 401 | u32 i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 403 | ACPI_FUNCTION_TRACE("acpi_get_system_info"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
| 405 | /* Parameter validation */ |
| 406 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 407 | status = acpi_ut_validate_buffer(out_buffer); |
| 408 | if (ACPI_FAILURE(status)) { |
| 409 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | /* Validate/Allocate/Clear caller buffer */ |
| 413 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 414 | status = |
| 415 | acpi_ut_initialize_buffer(out_buffer, |
| 416 | sizeof(struct acpi_system_info)); |
| 417 | if (ACPI_FAILURE(status)) { |
| 418 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | } |
| 420 | |
| 421 | /* |
| 422 | * Populate the return buffer |
| 423 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 424 | info_ptr = (struct acpi_system_info *)out_buffer->pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 426 | info_ptr->acpi_ca_version = ACPI_CA_VERSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
| 428 | /* System flags (ACPI capabilities) */ |
| 429 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 430 | info_ptr->flags = ACPI_SYS_MODE_ACPI; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* Timer resolution - 24 or 32 bits */ |
| 433 | |
| 434 | if (!acpi_gbl_FADT) { |
| 435 | info_ptr->timer_resolution = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 436 | } else if (acpi_gbl_FADT->tmr_val_ext == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | info_ptr->timer_resolution = 24; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 438 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | info_ptr->timer_resolution = 32; |
| 440 | } |
| 441 | |
| 442 | /* Clear the reserved fields */ |
| 443 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 444 | info_ptr->reserved1 = 0; |
| 445 | info_ptr->reserved2 = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | |
| 447 | /* Current debug levels */ |
| 448 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 449 | info_ptr->debug_layer = acpi_dbg_layer; |
| 450 | info_ptr->debug_level = acpi_dbg_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
| 452 | /* Current status of the ACPI tables, per table type */ |
| 453 | |
| 454 | info_ptr->num_table_types = NUM_ACPI_TABLE_TYPES; |
| 455 | for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) { |
| 456 | info_ptr->table_info[i].count = acpi_gbl_table_lists[i].count; |
| 457 | } |
| 458 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 459 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 462 | EXPORT_SYMBOL(acpi_get_system_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
| 464 | /***************************************************************************** |
| 465 | * |
| 466 | * FUNCTION: acpi_install_initialization_handler |
| 467 | * |
| 468 | * PARAMETERS: Handler - Callback procedure |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 469 | * Function - Not (currently) used, see below |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | * |
| 471 | * RETURN: Status |
| 472 | * |
| 473 | * DESCRIPTION: Install an initialization handler |
| 474 | * |
| 475 | * TBD: When a second function is added, must save the Function also. |
| 476 | * |
| 477 | ****************************************************************************/ |
| 478 | |
| 479 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 480 | acpi_install_initialization_handler(acpi_init_handler handler, u32 function) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | { |
| 482 | |
| 483 | if (!handler) { |
| 484 | return (AE_BAD_PARAMETER); |
| 485 | } |
| 486 | |
| 487 | if (acpi_gbl_init_handler) { |
| 488 | return (AE_ALREADY_EXISTS); |
| 489 | } |
| 490 | |
| 491 | acpi_gbl_init_handler = handler; |
| 492 | return AE_OK; |
| 493 | } |
| 494 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 495 | #endif /* ACPI_FUTURE_USAGE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | /***************************************************************************** |
| 498 | * |
| 499 | * FUNCTION: acpi_purge_cached_objects |
| 500 | * |
| 501 | * PARAMETERS: None |
| 502 | * |
| 503 | * RETURN: Status |
| 504 | * |
| 505 | * DESCRIPTION: Empty all caches (delete the cached objects) |
| 506 | * |
| 507 | ****************************************************************************/ |
| 508 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 509 | acpi_status acpi_purge_cached_objects(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 511 | ACPI_FUNCTION_TRACE("acpi_purge_cached_objects"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 513 | (void)acpi_os_purge_cache(acpi_gbl_state_cache); |
| 514 | (void)acpi_os_purge_cache(acpi_gbl_operand_cache); |
| 515 | (void)acpi_os_purge_cache(acpi_gbl_ps_node_cache); |
| 516 | (void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache); |
| 517 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | } |