arch/all-pc/acpica/source/components/utilities/utxfinit.c

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