reactos/drivers/bus/acpi/acpica/utilities/utxfinit.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utxfinit - External interfaces for ACPICA initialization
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2016, 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 EXPORT_ACPI_INTERFACES
  45
  46 #include "acpi.h"
  47 #include "accommon.h"
  48 #include "acevents.h"
  49 #include "acnamesp.h"
  50 #include "acdebug.h"
  51 #include "actables.h"
  52
  53 #define _COMPONENT          ACPI_UTILITIES
  54         ACPI_MODULE_NAME    ("utxfinit")
  55
  56 /* For AcpiExec only */
  57 void
  58 AeDoObjectOverrides (
  59     void);
  60
  61
  62 /*******************************************************************************
  63  *
  64  * FUNCTION:    AcpiInitializeSubsystem
  65  *
  66  * PARAMETERS:  None
  67  *
  68  * RETURN:      Status
  69  *
  70  * DESCRIPTION: Initializes all global variables. This is the first function
  71  *              called, so any early initialization belongs here.
  72  *
  73  ******************************************************************************/
  74
  75 ACPI_STATUS
  76 AcpiInitializeSubsystem (
  77     void)
  78 {
  79     ACPI_STATUS             Status;
  80
  81
  82     ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem);
  83
  84
  85     AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE;
  86     ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());
  87
  88     /* Initialize the OS-Dependent layer */
  89
  90     Status = AcpiOsInitialize ();
  91     if (ACPI_FAILURE (Status))
  92     {
  93         ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization"));
  94         return_ACPI_STATUS (Status);
  95     }
  96
  97     /* Initialize all globals used by the subsystem */
  98
  99     Status = AcpiUtInitGlobals ();
 100     if (ACPI_FAILURE (Status))
 101     {
 102         ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals"));
 103         return_ACPI_STATUS (Status);
 104     }
 105
 106     /* Create the default mutex objects */
 107
 108     Status = AcpiUtMutexInitialize ();
 109     if (ACPI_FAILURE (Status))
 110     {
 111         ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation"));
 112         return_ACPI_STATUS (Status);
 113     }
 114
 115     /*
 116      * Initialize the namespace manager and
 117      * the root of the namespace tree
 118      */
 119     Status = AcpiNsRootInitialize ();
 120     if (ACPI_FAILURE (Status))
 121     {
 122         ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization"));
 123         return_ACPI_STATUS (Status);
 124     }
 125
 126     /* Initialize the global OSI interfaces list with the static names */
 127
 128     Status = AcpiUtInitializeInterfaces ();
 129     if (ACPI_FAILURE (Status))
 130     {
 131         ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization"));
 132         return_ACPI_STATUS (Status);
 133     }
 134
 135     return_ACPI_STATUS (AE_OK);
 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     /*
 165      * The early initialization phase is complete. The namespace is loaded,
 166      * and we can now support address spaces other than Memory, I/O, and
 167      * PCI_Config.
 168      */
 169     AcpiGbl_EarlyInitialization = FALSE;
 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     if (!(Flags & ACPI_NO_FACS_INIT))
 194     {
 195         Status = AcpiTbInitializeFacs ();
 196         if (ACPI_FAILURE (Status))
 197         {
 198             ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
 199             return_ACPI_STATUS (Status);
 200         }
 201     }
 202
 203     /*
 204      * Initialize ACPI Event handling (Fixed and General Purpose)
 205      *
 206      * Note1: We must have the hardware and events initialized before we can
 207      * execute any control methods safely. Any control method can require
 208      * ACPI hardware support, so the hardware must be fully initialized before
 209      * any method execution!
 210      *
 211      * Note2: Fixed events are initialized and enabled here. GPEs are
 212      * initialized, but cannot be enabled until after the hardware is
 213      * completely initialized (SCI and GlobalLock activated) and the various
 214      * initialization control methods are run (_REG, _STA, _INI) on the
 215      * entire namespace.
 216      */
 217     if (!(Flags & ACPI_NO_EVENT_INIT))
 218     {
 219         ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
 220             "[Init] Initializing ACPI events\n"));
 221
 222         Status = AcpiEvInitializeEvents ();
 223         if (ACPI_FAILURE (Status))
 224         {
 225             return_ACPI_STATUS (Status);
 226         }
 227     }
 228
 229     /*
 230      * Install the SCI handler and Global Lock handler. This completes the
 231      * hardware initialization.
 232      */
 233     if (!(Flags & ACPI_NO_HANDLER_INIT))
 234     {
 235         ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
 236             "[Init] Installing SCI/GL handlers\n"));
 237
 238         Status = AcpiEvInstallXruptHandlers ();
 239         if (ACPI_FAILURE (Status))
 240         {
 241             return_ACPI_STATUS (Status);
 242         }
 243     }
 244
 245 #endif /* !ACPI_REDUCED_HARDWARE */
 246
 247     return_ACPI_STATUS (Status);
 248 }
 249
 250 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem)
 251
 252
 253 /*******************************************************************************
 254  *
 255  * FUNCTION:    AcpiInitializeObjects
 256  *
 257  * PARAMETERS:  Flags               - Init/enable Options
 258  *
 259  * RETURN:      Status
 260  *
 261  * DESCRIPTION: Completes namespace initialization by initializing device
 262  *              objects and executing AML code for Regions, buffers, etc.
 263  *
 264  ******************************************************************************/
 265
 266 ACPI_STATUS
 267 AcpiInitializeObjects (
 268     UINT32                  Flags)
 269 {
 270     ACPI_STATUS             Status = AE_OK;
 271
 272
 273     ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
 274
 275
 276 #ifdef ACPI_EXEC_APP
 277     /*
 278      * This call implements the "initialization file" option for AcpiExec.
 279      * This is the precise point that we want to perform the overrides.
 280      */
 281     AeDoObjectOverrides ();
 282 #endif
 283
 284     /*
 285      * Execute any module-level code that was detected during the table load
 286      * phase. Although illegal since ACPI 2.0, there are many machines that
 287      * contain this type of code. Each block of detected executable AML code
 288      * outside of any control method is wrapped with a temporary control
 289      * method object and placed on a global list. The methods on this list
 290      * are executed below.
 291      *
 292      * This case executes the module-level code for all tables only after
 293      * all of the tables have been loaded. It is a legacy option and is
 294      * not compatible with other ACPI implementations. See AcpiNsLoadTable.
 295      */
 296     if (AcpiGbl_GroupModuleLevelCode)
 297     {
 298         AcpiNsExecModuleCodeList ();
 299
 300         /*
 301          * Initialize the objects that remain uninitialized. This
 302          * runs the executable AML that may be part of the
 303          * declaration of these objects:
 304          * OperationRegions, BufferFields, Buffers, and Packages.
 305          */
 306         if (!(Flags & ACPI_NO_OBJECT_INIT))
 307         {
 308             Status = AcpiNsInitializeObjects ();
 309             if (ACPI_FAILURE (Status))
 310             {
 311                 return_ACPI_STATUS (Status);
 312             }
 313         }
 314     }
 315
 316     /*
 317      * Initialize all device/region objects in the namespace. This runs
 318      * the device _STA and _INI methods and region _REG methods.
 319      */
 320     if (!(Flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT)))
 321     {
 322         Status = AcpiNsInitializeDevices (Flags);
 323         if (ACPI_FAILURE (Status))
 324         {
 325             return_ACPI_STATUS (Status);
 326         }
 327     }
 328
 329     /*
 330      * Empty the caches (delete the cached objects) on the assumption that
 331      * the table load filled them up more than they will be at runtime --
 332      * thus wasting non-paged memory.
 333      */
 334     Status = AcpiPurgeCachedObjects ();
 335
 336     AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
 337     return_ACPI_STATUS (Status);
 338 }
 339
 340 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects)