1 /****************************************************************************** 2 * 3 * Module Name: utxfinit - External interfaces for ACPICA initialization 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2013, 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 45 #define __UTXFINIT_C__ 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 ACPI_DEBUGGER_EXEC (Status = AcpiDbInitialize ()); 134 return_ACPI_STATUS (Status); 135 } 136 137 ACPI_EXPORT_SYMBOL (AcpiInitializeSubsystem) 138 139 140 /******************************************************************************* 141 * 142 * FUNCTION: AcpiEnableSubsystem 143 * 144 * PARAMETERS: Flags - Init/enable Options 145 * 146 * RETURN: Status 147 * 148 * DESCRIPTION: Completes the subsystem initialization including hardware. 149 * Puts system into ACPI mode if it isn't already. 150 * 151 ******************************************************************************/ 152 153 ACPI_STATUS 154 AcpiEnableSubsystem ( 155 UINT32 Flags) 156 { 157 ACPI_STATUS Status = AE_OK; 158 159 160 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); 161 162 163 #if (!ACPI_REDUCED_HARDWARE) 164 165 /* Enable ACPI mode */ 166 167 if (!(Flags & ACPI_NO_ACPI_ENABLE)) 168 { 169 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); 170 171 AcpiGbl_OriginalMode = AcpiHwGetMode(); 172 173 Status = AcpiEnable (); 174 if (ACPI_FAILURE (Status)) 175 { 176 ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); 177 return_ACPI_STATUS (Status); 178 } 179 } 180 181 /* 182 * Obtain a permanent mapping for the FACS. This is required for the 183 * Global Lock and the Firmware Waking Vector 184 */ 185 Status = AcpiTbInitializeFacs (); 186 if (ACPI_FAILURE (Status)) 187 { 188 ACPI_WARNING ((AE_INFO, "Could not map the FACS table")); 189 return_ACPI_STATUS (Status); 190 } 191 192 #endif /* !ACPI_REDUCED_HARDWARE */ 193 194 /* 195 * Install the default OpRegion handlers. These are installed unless 196 * other handlers have already been installed via the 197 * InstallAddressSpaceHandler interface. 198 */ 199 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) 200 { 201 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 202 "[Init] Installing default address space handlers\n")); 203 204 Status = AcpiEvInstallRegionHandlers (); 205 if (ACPI_FAILURE (Status)) 206 { 207 return_ACPI_STATUS (Status); 208 } 209 } 210 211 #if (!ACPI_REDUCED_HARDWARE) 212 /* 213 * Initialize ACPI Event handling (Fixed and General Purpose) 214 * 215 * Note1: We must have the hardware and events initialized before we can 216 * execute any control methods safely. Any control method can require 217 * ACPI hardware support, so the hardware must be fully initialized before 218 * any method execution! 219 * 220 * Note2: Fixed events are initialized and enabled here. GPEs are 221 * initialized, but cannot be enabled until after the hardware is 222 * completely initialized (SCI and GlobalLock activated) and the various 223 * initialization control methods are run (_REG, _STA, _INI) on the 224 * entire namespace. 225 */ 226 if (!(Flags & ACPI_NO_EVENT_INIT)) 227 { 228 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 229 "[Init] Initializing ACPI events\n")); 230 231 Status = AcpiEvInitializeEvents (); 232 if (ACPI_FAILURE (Status)) 233 { 234 return_ACPI_STATUS (Status); 235 } 236 } 237 238 /* 239 * Install the SCI handler and Global Lock handler. This completes the 240 * hardware initialization. 241 */ 242 if (!(Flags & ACPI_NO_HANDLER_INIT)) 243 { 244 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 245 "[Init] Installing SCI/GL handlers\n")); 246 247 Status = AcpiEvInstallXruptHandlers (); 248 if (ACPI_FAILURE (Status)) 249 { 250 return_ACPI_STATUS (Status); 251 } 252 } 253 254 #endif /* !ACPI_REDUCED_HARDWARE */ 255 256 return_ACPI_STATUS (Status); 257 } 258 259 ACPI_EXPORT_SYMBOL (AcpiEnableSubsystem) 260 261 262 /******************************************************************************* 263 * 264 * FUNCTION: AcpiInitializeObjects 265 * 266 * PARAMETERS: Flags - Init/enable Options 267 * 268 * RETURN: Status 269 * 270 * DESCRIPTION: Completes namespace initialization by initializing device 271 * objects and executing AML code for Regions, buffers, etc. 272 * 273 ******************************************************************************/ 274 275 ACPI_STATUS 276 AcpiInitializeObjects ( 277 UINT32 Flags) 278 { 279 ACPI_STATUS Status = AE_OK; 280 281 282 ACPI_FUNCTION_TRACE (AcpiInitializeObjects); 283 284 285 /* 286 * Run all _REG methods 287 * 288 * Note: Any objects accessed by the _REG methods will be automatically 289 * initialized, even if they contain executable AML (see the call to 290 * AcpiNsInitializeObjects below). 291 */ 292 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) 293 { 294 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 295 "[Init] Executing _REG OpRegion methods\n")); 296 297 Status = AcpiEvInitializeOpRegions (); 298 if (ACPI_FAILURE (Status)) 299 { 300 return_ACPI_STATUS (Status); 301 } 302 } 303 304 /* 305 * Execute any module-level code that was detected during the table load 306 * phase. Although illegal since ACPI 2.0, there are many machines that 307 * contain this type of code. Each block of detected executable AML code 308 * outside of any control method is wrapped with a temporary control 309 * method object and placed on a global list. The methods on this list 310 * are executed below. 311 */ 312 AcpiNsExecModuleCodeList (); 313 314 /* 315 * Initialize the objects that remain uninitialized. This runs the 316 * executable AML that may be part of the declaration of these objects: 317 * OperationRegions, BufferFields, Buffers, and Packages. 318 */ 319 if (!(Flags & ACPI_NO_OBJECT_INIT)) 320 { 321 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 322 "[Init] Completing Initialization of ACPI Objects\n")); 323 324 Status = AcpiNsInitializeObjects (); 325 if (ACPI_FAILURE (Status)) 326 { 327 return_ACPI_STATUS (Status); 328 } 329 } 330 331 /* 332 * Initialize all device objects in the namespace. This runs the device 333 * _STA and _INI methods. 334 */ 335 if (!(Flags & ACPI_NO_DEVICE_INIT)) 336 { 337 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 338 "[Init] Initializing ACPI Devices\n")); 339 340 Status = AcpiNsInitializeDevices (); 341 if (ACPI_FAILURE (Status)) 342 { 343 return_ACPI_STATUS (Status); 344 } 345 } 346 347 /* 348 * Empty the caches (delete the cached objects) on the assumption that 349 * the table load filled them up more than they will be at runtime -- 350 * thus wasting non-paged memory. 351 */ 352 Status = AcpiPurgeCachedObjects (); 353 354 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK; 355 return_ACPI_STATUS (Status); 356 } 357 358 ACPI_EXPORT_SYMBOL (AcpiInitializeObjects) 359