1 /****************************************************************************** 2 * 3 * Module Name: utxfinit - External interfaces for ACPICA initialization 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2014, Intel Corp. 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 #define __UTXFINIT_C__ 45 #define EXPORT_ACPI_INTERFACES 46 47 #include <contrib/dev/acpica/include/acpi.h> 48 #include <contrib/dev/acpica/include/accommon.h> 49 #include <contrib/dev/acpica/include/acevents.h> 50 #include <contrib/dev/acpica/include/acnamesp.h> 51 #include <contrib/dev/acpica/include/acdebug.h> 52 #include <contrib/dev/acpica/include/actables.h> 53 54 #define _COMPONENT ACPI_UTILITIES 55 ACPI_MODULE_NAME ("utxfinit") 56 57 58 /******************************************************************************* 59 * 60 * FUNCTION: AcpiInitializeSubsystem 61 * 62 * PARAMETERS: None 63 * 64 * RETURN: Status 65 * 66 * DESCRIPTION: Initializes all global variables. This is the first function 67 * called, so any early initialization belongs here. 68 * 69 ******************************************************************************/ 70 71 ACPI_STATUS 72 AcpiInitializeSubsystem ( 73 void) 74 { 75 ACPI_STATUS Status; 76 77 78 ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem); 79 80 81 AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE; 82 ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ()); 83 84 /* Initialize the OS-Dependent layer */ 85 86 Status = AcpiOsInitialize (); 87 if (ACPI_FAILURE (Status)) 88 { 89 ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization")); 90 return_ACPI_STATUS (Status); 91 } 92 93 /* Initialize all globals used by the subsystem */ 94 95 Status = AcpiUtInitGlobals (); 96 if (ACPI_FAILURE (Status)) 97 { 98 ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals")); 99 return_ACPI_STATUS (Status); 100 } 101 102 /* Create the default mutex objects */ 103 104 Status = AcpiUtMutexInitialize (); 105 if (ACPI_FAILURE (Status)) 106 { 107 ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation")); 108 return_ACPI_STATUS (Status); 109 } 110 111 /* 112 * Initialize the namespace manager and 113 * the root of the namespace tree 114 */ 115 Status = AcpiNsRootInitialize (); 116 if (ACPI_FAILURE (Status)) 117 { 118 ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization")); 119 return_ACPI_STATUS (Status); 120 } 121 122 /* Initialize the global OSI interfaces list with the static names */ 123 124 Status = AcpiUtInitializeInterfaces (); 125 if (ACPI_FAILURE (Status)) 126 { 127 ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization")); 128 return_ACPI_STATUS (Status); 129 } 130 131 /* If configured, initialize the AML debugger */ 132 133 #ifdef ACPI_DEBUGGER 134 Status = AcpiDbInitialize (); 135 if (ACPI_FAILURE (Status)) 136 { 137 ACPI_EXCEPTION ((AE_INFO, Status, "During Debugger initialization")); 138 return_ACPI_STATUS (Status); 139 } 140 #endif 141 142 return_ACPI_STATUS (AE_OK); 143 } 144 145 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeSubsystem) 146 147 148 /******************************************************************************* 149 * 150 * FUNCTION: AcpiEnableSubsystem 151 * 152 * PARAMETERS: Flags - Init/enable Options 153 * 154 * RETURN: Status 155 * 156 * DESCRIPTION: Completes the subsystem initialization including hardware. 157 * Puts system into ACPI mode if it isn't already. 158 * 159 ******************************************************************************/ 160 161 ACPI_STATUS 162 AcpiEnableSubsystem ( 163 UINT32 Flags) 164 { 165 ACPI_STATUS Status = AE_OK; 166 167 168 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); 169 170 171 #if (!ACPI_REDUCED_HARDWARE) 172 173 /* Enable ACPI mode */ 174 175 if (!(Flags & ACPI_NO_ACPI_ENABLE)) 176 { 177 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); 178 179 AcpiGbl_OriginalMode = AcpiHwGetMode(); 180 181 Status = AcpiEnable (); 182 if (ACPI_FAILURE (Status)) 183 { 184 ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); 185 return_ACPI_STATUS (Status); 186 } 187 } 188 189 /* 190 * Obtain a permanent mapping for the FACS. This is required for the 191 * Global Lock and the Firmware Waking Vector 192 */ 193 Status = AcpiTbInitializeFacs (); 194 if (ACPI_FAILURE (Status)) 195 { 196 ACPI_WARNING ((AE_INFO, "Could not map the FACS table")); 197 return_ACPI_STATUS (Status); 198 } 199 200 #endif /* !ACPI_REDUCED_HARDWARE */ 201 202 /* 203 * Install the default OpRegion handlers. These are installed unless 204 * other handlers have already been installed via the 205 * InstallAddressSpaceHandler interface. 206 */ 207 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) 208 { 209 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 210 "[Init] Installing default address space handlers\n")); 211 212 Status = AcpiEvInstallRegionHandlers (); 213 if (ACPI_FAILURE (Status)) 214 { 215 return_ACPI_STATUS (Status); 216 } 217 } 218 219 #if (!ACPI_REDUCED_HARDWARE) 220 /* 221 * Initialize ACPI Event handling (Fixed and General Purpose) 222 * 223 * Note1: We must have the hardware and events initialized before we can 224 * execute any control methods safely. Any control method can require 225 * ACPI hardware support, so the hardware must be fully initialized before 226 * any method execution! 227 * 228 * Note2: Fixed events are initialized and enabled here. GPEs are 229 * initialized, but cannot be enabled until after the hardware is 230 * completely initialized (SCI and GlobalLock activated) and the various 231 * initialization control methods are run (_REG, _STA, _INI) on the 232 * entire namespace. 233 */ 234 if (!(Flags & ACPI_NO_EVENT_INIT)) 235 { 236 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 237 "[Init] Initializing ACPI events\n")); 238 239 Status = AcpiEvInitializeEvents (); 240 if (ACPI_FAILURE (Status)) 241 { 242 return_ACPI_STATUS (Status); 243 } 244 } 245 246 /* 247 * Install the SCI handler and Global Lock handler. This completes the 248 * hardware initialization. 249 */ 250 if (!(Flags & ACPI_NO_HANDLER_INIT)) 251 { 252 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 253 "[Init] Installing SCI/GL handlers\n")); 254 255 Status = AcpiEvInstallXruptHandlers (); 256 if (ACPI_FAILURE (Status)) 257 { 258 return_ACPI_STATUS (Status); 259 } 260 } 261 262 #endif /* !ACPI_REDUCED_HARDWARE */ 263 264 return_ACPI_STATUS (Status); 265 } 266 267 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem) 268 269 270 /******************************************************************************* 271 * 272 * FUNCTION: AcpiInitializeObjects 273 * 274 * PARAMETERS: Flags - Init/enable Options 275 * 276 * RETURN: Status 277 * 278 * DESCRIPTION: Completes namespace initialization by initializing device 279 * objects and executing AML code for Regions, buffers, etc. 280 * 281 ******************************************************************************/ 282 283 ACPI_STATUS 284 AcpiInitializeObjects ( 285 UINT32 Flags) 286 { 287 ACPI_STATUS Status = AE_OK; 288 289 290 ACPI_FUNCTION_TRACE (AcpiInitializeObjects); 291 292 293 /* 294 * Run all _REG methods 295 * 296 * Note: Any objects accessed by the _REG methods will be automatically 297 * initialized, even if they contain executable AML (see the call to 298 * AcpiNsInitializeObjects below). 299 */ 300 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) 301 { 302 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 303 "[Init] Executing _REG OpRegion methods\n")); 304 305 Status = AcpiEvInitializeOpRegions (); 306 if (ACPI_FAILURE (Status)) 307 { 308 return_ACPI_STATUS (Status); 309 } 310 } 311 312 /* 313 * Execute any module-level code that was detected during the table load 314 * phase. Although illegal since ACPI 2.0, there are many machines that 315 * contain this type of code. Each block of detected executable AML code 316 * outside of any control method is wrapped with a temporary control 317 * method object and placed on a global list. The methods on this list 318 * are executed below. 319 */ 320 AcpiNsExecModuleCodeList (); 321 322 /* 323 * Initialize the objects that remain uninitialized. This runs the 324 * executable AML that may be part of the declaration of these objects: 325 * OperationRegions, BufferFields, Buffers, and Packages. 326 */ 327 if (!(Flags & ACPI_NO_OBJECT_INIT)) 328 { 329 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 330 "[Init] Completing Initialization of ACPI Objects\n")); 331 332 Status = AcpiNsInitializeObjects (); 333 if (ACPI_FAILURE (Status)) 334 { 335 return_ACPI_STATUS (Status); 336 } 337 } 338 339 /* 340 * Initialize all device objects in the namespace. This runs the device 341 * _STA and _INI methods. 342 */ 343 if (!(Flags & ACPI_NO_DEVICE_INIT)) 344 { 345 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 346 "[Init] Initializing ACPI Devices\n")); 347 348 Status = AcpiNsInitializeDevices (); 349 if (ACPI_FAILURE (Status)) 350 { 351 return_ACPI_STATUS (Status); 352 } 353 } 354 355 /* 356 * Empty the caches (delete the cached objects) on the assumption that 357 * the table load filled them up more than they will be at runtime -- 358 * thus wasting non-paged memory. 359 */ 360 Status = AcpiPurgeCachedObjects (); 361 362 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK; 363 return_ACPI_STATUS (Status); 364 } 365 366 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects) 367