drivers/bus/acpi/acpica/utilities/utinit.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utinit - Common ACPI subsystem initialization
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2019, 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 #include "acpi.h"
  45 #include "accommon.h"
  46 #include "acnamesp.h"
  47 #include "acevents.h"
  48 #include "actables.h"
  49
  50 #define _COMPONENT          ACPI_UTILITIES
  51         ACPI_MODULE_NAME    ("utinit")
  52
  53 /* Local prototypes */
  54
  55 static void AcpiUtTerminate (
  56     void);
  57
  58 #if (!ACPI_REDUCED_HARDWARE)
  59
  60 static void
  61 AcpiUtFreeGpeLists (
  62     void);
  63
  64 #else
  65
  66 #define AcpiUtFreeGpeLists()
  67 #endif /* !ACPI_REDUCED_HARDWARE */
  68
  69
  70 #if (!ACPI_REDUCED_HARDWARE)
  71 /******************************************************************************
  72  *
  73  * FUNCTION:    AcpiUtFreeGpeLists
  74  *
  75  * PARAMETERS:  none
  76  *
  77  * RETURN:      none
  78  *
  79  * DESCRIPTION: Free global GPE lists
  80  *
  81  ******************************************************************************/
  82
  83 static void
  84 AcpiUtFreeGpeLists (
  85     void)
  86 {
  87     ACPI_GPE_BLOCK_INFO     *GpeBlock;
  88     ACPI_GPE_BLOCK_INFO     *NextGpeBlock;
  89     ACPI_GPE_XRUPT_INFO     *GpeXruptInfo;
  90     ACPI_GPE_XRUPT_INFO     *NextGpeXruptInfo;
  91
  92
  93     /* Free global GPE blocks and related info structures */
  94
  95     GpeXruptInfo = AcpiGbl_GpeXruptListHead;
  96     while (GpeXruptInfo)
  97     {
  98         GpeBlock = GpeXruptInfo->GpeBlockListHead;
  99         while (GpeBlock)
 100         {
 101             NextGpeBlock = GpeBlock->Next;
 102             ACPI_FREE (GpeBlock->EventInfo);
 103             ACPI_FREE (GpeBlock->RegisterInfo);
 104             ACPI_FREE (GpeBlock);
 105
 106             GpeBlock = NextGpeBlock;
 107         }
 108         NextGpeXruptInfo = GpeXruptInfo->Next;
 109         ACPI_FREE (GpeXruptInfo);
 110         GpeXruptInfo = NextGpeXruptInfo;
 111     }
 112 }
 113 #endif /* !ACPI_REDUCED_HARDWARE */
 114
 115
 116 /*******************************************************************************
 117  *
 118  * FUNCTION:    AcpiUtInitGlobals
 119  *
 120  * PARAMETERS:  None
 121  *
 122  * RETURN:      Status
 123  *
 124  * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
 125  *              initialization should be initialized here. This allows for
 126  *              a warm restart.
 127  *
 128  ******************************************************************************/
 129
 130 ACPI_STATUS
 131 AcpiUtInitGlobals (
 132     void)
 133 {
 134     ACPI_STATUS             Status;
 135     UINT32                  i;
 136
 137
 138     ACPI_FUNCTION_TRACE (UtInitGlobals);
 139
 140
 141     /* Create all memory caches */
 142
 143     Status = AcpiUtCreateCaches ();
 144     if (ACPI_FAILURE (Status))
 145     {
 146         return_ACPI_STATUS (Status);
 147     }
 148
 149     /* Address Range lists */
 150
 151     for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++)
 152     {
 153         AcpiGbl_AddressRangeList[i] = NULL;
 154     }
 155
 156     /* Mutex locked flags */
 157
 158     for (i = 0; i < ACPI_NUM_MUTEX; i++)
 159     {
 160         AcpiGbl_MutexInfo[i].Mutex          = NULL;
 161         AcpiGbl_MutexInfo[i].ThreadId       = ACPI_MUTEX_NOT_ACQUIRED;
 162         AcpiGbl_MutexInfo[i].UseCount       = 0;
 163     }
 164
 165     for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++)
 166     {
 167         AcpiGbl_OwnerIdMask[i]              = 0;
 168     }
 169
 170     /* Last OwnerID is never valid */
 171
 172     AcpiGbl_OwnerIdMask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
 173
 174     /* Event counters */
 175
 176     AcpiMethodCount                     = 0;
 177     AcpiSciCount                        = 0;
 178     AcpiGpeCount                        = 0;
 179
 180     for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
 181     {
 182         AcpiFixedEventCount[i]              = 0;
 183     }
 184
 185 #if (!ACPI_REDUCED_HARDWARE)
 186
 187     /* GPE/SCI support */
 188
 189     AcpiGbl_AllGpesInitialized          = FALSE;
 190     AcpiGbl_GpeXruptListHead            = NULL;
 191     AcpiGbl_GpeFadtBlocks[0]            = NULL;
 192     AcpiGbl_GpeFadtBlocks[1]            = NULL;
 193     AcpiCurrentGpeCount                 = 0;
 194
 195     AcpiGbl_GlobalEventHandler          = NULL;
 196     AcpiGbl_SciHandlerList              = NULL;
 197
 198 #endif /* !ACPI_REDUCED_HARDWARE */
 199
 200     /* Global handlers */
 201
 202     AcpiGbl_GlobalNotify[0].Handler     = NULL;
 203     AcpiGbl_GlobalNotify[1].Handler     = NULL;
 204     AcpiGbl_ExceptionHandler            = NULL;
 205     AcpiGbl_InitHandler                 = NULL;
 206     AcpiGbl_TableHandler                = NULL;
 207     AcpiGbl_InterfaceHandler            = NULL;
 208
 209     /* Global Lock support */
 210
 211     AcpiGbl_GlobalLockSemaphore         = NULL;
 212     AcpiGbl_GlobalLockMutex             = NULL;
 213     AcpiGbl_GlobalLockAcquired          = FALSE;
 214     AcpiGbl_GlobalLockHandle            = 0;
 215     AcpiGbl_GlobalLockPresent           = FALSE;
 216
 217     /* Miscellaneous variables */
 218
 219     AcpiGbl_DSDT                        = NULL;
 220     AcpiGbl_CmSingleStep                = FALSE;
 221     AcpiGbl_Shutdown                    = FALSE;
 222     AcpiGbl_NsLookupCount               = 0;
 223     AcpiGbl_PsFindCount                 = 0;
 224     AcpiGbl_AcpiHardwarePresent         = TRUE;
 225     AcpiGbl_LastOwnerIdIndex            = 0;
 226     AcpiGbl_NextOwnerIdOffset           = 0;
 227     AcpiGbl_DebuggerConfiguration       = DEBUGGER_THREADING;
 228     AcpiGbl_OsiMutex                    = NULL;
 229
 230     /* Hardware oriented */
 231
 232     AcpiGbl_EventsInitialized           = FALSE;
 233     AcpiGbl_SystemAwakeAndRunning       = TRUE;
 234
 235     /* Namespace */
 236
 237     AcpiGbl_RootNode                    = NULL;
 238     AcpiGbl_RootNodeStruct.Name.Integer = ACPI_ROOT_NAME;
 239     AcpiGbl_RootNodeStruct.DescriptorType = ACPI_DESC_TYPE_NAMED;
 240     AcpiGbl_RootNodeStruct.Type         = ACPI_TYPE_DEVICE;
 241     AcpiGbl_RootNodeStruct.Parent       = NULL;
 242     AcpiGbl_RootNodeStruct.Child        = NULL;
 243     AcpiGbl_RootNodeStruct.Peer         = NULL;
 244     AcpiGbl_RootNodeStruct.Object       = NULL;
 245
 246
 247 #ifdef ACPI_DISASSEMBLER
 248     AcpiGbl_ExternalList                = NULL;
 249     AcpiGbl_NumExternalMethods          = 0;
 250     AcpiGbl_ResolvedExternalMethods     = 0;
 251 #endif
 252
 253 #ifdef ACPI_DEBUG_OUTPUT
 254     AcpiGbl_LowestStackPointer          = ACPI_CAST_PTR (ACPI_SIZE, ACPI_SIZE_MAX);
 255 #endif
 256
 257 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 258     AcpiGbl_DisplayFinalMemStats        = FALSE;
 259     AcpiGbl_DisableMemTracking          = FALSE;
 260 #endif
 261
 262     return_ACPI_STATUS (AE_OK);
 263 }
 264
 265
 266 /******************************************************************************
 267  *
 268  * FUNCTION:    AcpiUtTerminate
 269  *
 270  * PARAMETERS:  none
 271  *
 272  * RETURN:      none
 273  *
 274  * DESCRIPTION: Free global memory
 275  *
 276  ******************************************************************************/
 277
 278 static void
 279 AcpiUtTerminate (
 280     void)
 281 {
 282     ACPI_FUNCTION_TRACE (UtTerminate);
 283
 284     AcpiUtFreeGpeLists ();
 285     AcpiUtDeleteAddressLists ();
 286     return_VOID;
 287 }
 288
 289
 290 /*******************************************************************************
 291  *
 292  * FUNCTION:    AcpiUtSubsystemShutdown
 293  *
 294  * PARAMETERS:  None
 295  *
 296  * RETURN:      None
 297  *
 298  * DESCRIPTION: Shutdown the various components. Do not delete the mutex
 299  *              objects here, because the AML debugger may be still running.
 300  *
 301  ******************************************************************************/
 302
 303 void
 304 AcpiUtSubsystemShutdown (
 305     void)
 306 {
 307     ACPI_FUNCTION_TRACE (UtSubsystemShutdown);
 308
 309
 310     /* Just exit if subsystem is already shutdown */
 311
 312     if (AcpiGbl_Shutdown)
 313     {
 314         ACPI_ERROR ((AE_INFO, "ACPI Subsystem is already terminated"));
 315         return_VOID;
 316     }
 317
 318     /* Subsystem appears active, go ahead and shut it down */
 319
 320     AcpiGbl_Shutdown = TRUE;
 321     AcpiGbl_StartupFlags = 0;
 322     ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
 323
 324 #ifndef ACPI_ASL_COMPILER
 325
 326     /* Close the AcpiEvent Handling */
 327
 328     AcpiEvTerminate ();
 329
 330     /* Delete any dynamic _OSI interfaces */
 331
 332     AcpiUtInterfaceTerminate ();
 333 #endif
 334
 335     /* Close the Namespace */
 336
 337     AcpiNsTerminate ();
 338
 339     /* Delete the ACPI tables */
 340
 341     AcpiTbTerminate ();
 342
 343     /* Close the globals */
 344
 345     AcpiUtTerminate ();
 346
 347     /* Purge the local caches */
 348
 349     (void) AcpiUtDeleteCaches ();
 350     return_VOID;
 351 }