utinit.c

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/******************************************************************************
 *
 * Module Name: utinit - Common ACPI subsystem initialization
 *
 *****************************************************************************/
 
/*
 * Copyright (C) 2000 - 2022, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */
 
#include "acpi.h"
#include "accommon.h"
#include "acnamesp.h"
#include "acevents.h"
#include "actables.h"
 
#define _COMPONENT          ACPI_UTILITIES
        ACPI_MODULE_NAME    ("utinit")
 
/* Local prototypes */
 
static void AcpiUtTerminate (
    void);
 
#if (!ACPI_REDUCED_HARDWARE)
 
static void
AcpiUtFreeGpeLists (
    void);
 
#else
 
#define AcpiUtFreeGpeLists()
#endif /* !ACPI_REDUCED_HARDWARE */
 
 
#if (!ACPI_REDUCED_HARDWARE)
/******************************************************************************
 *
 * FUNCTION:    AcpiUtFreeGpeLists
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Free global GPE lists
 *
 ******************************************************************************/
 
static void
AcpiUtFreeGpeLists (
    void)
{
    ACPI_GPE_BLOCK_INFO     *GpeBlock;
    ACPI_GPE_BLOCK_INFO     *NextGpeBlock;
    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo;
    ACPI_GPE_XRUPT_INFO     *NextGpeXruptInfo;
 
 
    /* Free global GPE blocks and related info structures */
 
    GpeXruptInfo = AcpiGbl_GpeXruptListHead;
    while (GpeXruptInfo)
    {
        GpeBlock = GpeXruptInfo->GpeBlockListHead;
        while (GpeBlock)
        {
            NextGpeBlock = GpeBlock->Next;
            ACPI_FREE (GpeBlock->EventInfo);
            ACPI_FREE (GpeBlock->RegisterInfo);
            ACPI_FREE (GpeBlock);
 
            GpeBlock = NextGpeBlock;
        }
        NextGpeXruptInfo = GpeXruptInfo->Next;
        ACPI_FREE (GpeXruptInfo);
        GpeXruptInfo = NextGpeXruptInfo;
    }
}
#endif /* !ACPI_REDUCED_HARDWARE */
 
 
/*******************************************************************************
 *
 * FUNCTION:    AcpiUtInitGlobals
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
 *              initialization should be initialized here. This allows for
 *              a warm restart.
 *
 ******************************************************************************/
 
ACPI_STATUS
AcpiUtInitGlobals (
    void)
{
    ACPI_STATUS             Status;
    UINT32                  i;
 
 
    ACPI_FUNCTION_TRACE (UtInitGlobals);
 
 
    /* Create all memory caches */
 
    Status = AcpiUtCreateCaches ();
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    /* Address Range lists */
 
    for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++)
    {
        AcpiGbl_AddressRangeList[i] = NULL;
    }
 
    /* Mutex locked flags */
 
    for (i = 0; i < ACPI_NUM_MUTEX; i++)
    {
        AcpiGbl_MutexInfo[i].Mutex          = NULL;
        AcpiGbl_MutexInfo[i].ThreadId       = ACPI_MUTEX_NOT_ACQUIRED;
        AcpiGbl_MutexInfo[i].UseCount       = 0;
    }
 
    for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++)
    {
        AcpiGbl_OwnerIdMask[i]              = 0;
    }
 
    /* Last OwnerID is never valid */
 
    AcpiGbl_OwnerIdMask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
 
    /* Event counters */
 
    AcpiMethodCount                     = 0;
    AcpiSciCount                        = 0;
    AcpiGpeCount                        = 0;
 
    for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
    {
        AcpiFixedEventCount[i]              = 0;
    }
 
#if (!ACPI_REDUCED_HARDWARE)
 
    /* GPE/SCI support */
 
    AcpiGbl_AllGpesInitialized          = FALSE;
    AcpiGbl_GpeXruptListHead            = NULL;
    AcpiGbl_GpeFadtBlocks[0]            = NULL;
    AcpiGbl_GpeFadtBlocks[1]            = NULL;
    AcpiCurrentGpeCount                 = 0;
 
    AcpiGbl_GlobalEventHandler          = NULL;
    AcpiGbl_SciHandlerList              = NULL;
 
#endif /* !ACPI_REDUCED_HARDWARE */
 
    /* Global handlers */
 
    AcpiGbl_GlobalNotify[0].Handler     = NULL;
    AcpiGbl_GlobalNotify[1].Handler     = NULL;
    AcpiGbl_ExceptionHandler            = NULL;
    AcpiGbl_InitHandler                 = NULL;
    AcpiGbl_TableHandler                = NULL;
    AcpiGbl_InterfaceHandler            = NULL;
 
    /* Global Lock support */
 
    AcpiGbl_GlobalLockSemaphore         = NULL;
    AcpiGbl_GlobalLockMutex             = NULL;
    AcpiGbl_GlobalLockAcquired          = FALSE;
    AcpiGbl_GlobalLockHandle            = 0;
    AcpiGbl_GlobalLockPresent           = FALSE;
 
    /* Miscellaneous variables */
 
    AcpiGbl_DSDT                        = NULL;
    AcpiGbl_CmSingleStep                = FALSE;
    AcpiGbl_Shutdown                    = FALSE;
    AcpiGbl_NsLookupCount               = 0;
    AcpiGbl_PsFindCount                 = 0;
    AcpiGbl_AcpiHardwarePresent         = TRUE;
    AcpiGbl_LastOwnerIdIndex            = 0;
    AcpiGbl_NextOwnerIdOffset           = 0;
    AcpiGbl_DebuggerConfiguration       = DEBUGGER_THREADING;
    AcpiGbl_OsiMutex                    = NULL;
 
    /* Hardware oriented */
 
    AcpiGbl_EventsInitialized           = FALSE;
    AcpiGbl_SystemAwakeAndRunning       = TRUE;
 
    /* Namespace */
 
    AcpiGbl_RootNode                    = NULL;
    AcpiGbl_RootNodeStruct.Name.Integer = ACPI_ROOT_NAME;
    AcpiGbl_RootNodeStruct.DescriptorType = ACPI_DESC_TYPE_NAMED;
    AcpiGbl_RootNodeStruct.Type         = ACPI_TYPE_DEVICE;
    AcpiGbl_RootNodeStruct.Parent       = NULL;
    AcpiGbl_RootNodeStruct.Child        = NULL;
    AcpiGbl_RootNodeStruct.Peer         = NULL;
    AcpiGbl_RootNodeStruct.Object       = NULL;
 
 
#ifdef ACPI_DISASSEMBLER
    AcpiGbl_ExternalList                = NULL;
    AcpiGbl_NumExternalMethods          = 0;
    AcpiGbl_ResolvedExternalMethods     = 0;
#endif
 
#ifdef ACPI_DEBUG_OUTPUT
    AcpiGbl_LowestStackPointer          = ACPI_CAST_PTR (ACPI_SIZE, ACPI_SIZE_MAX);
#endif
 
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
    AcpiGbl_DisplayFinalMemStats        = FALSE;
    AcpiGbl_DisableMemTracking          = FALSE;
#endif
 
    return_ACPI_STATUS (AE_OK);
}
 
 
/******************************************************************************
 *
 * FUNCTION:    AcpiUtTerminate
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Free global memory
 *
 ******************************************************************************/
 
static void
AcpiUtTerminate (
    void)
{
    ACPI_FUNCTION_TRACE (UtTerminate);
 
    AcpiUtFreeGpeLists ();
    AcpiUtDeleteAddressLists ();
    return_VOID;
}
 
 
/*******************************************************************************
 *
 * FUNCTION:    AcpiUtSubsystemShutdown
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Shutdown the various components. Do not delete the mutex
 *              objects here, because the AML debugger may be still running.
 *
 ******************************************************************************/
 
void
AcpiUtSubsystemShutdown (
    void)
{
    ACPI_FUNCTION_TRACE (UtSubsystemShutdown);
 
 
    /* Just exit if subsystem is already shutdown */
 
    if (AcpiGbl_Shutdown)
    {
        ACPI_ERROR ((AE_INFO, "ACPI Subsystem is already terminated"));
        return_VOID;
    }
 
    /* Subsystem appears active, go ahead and shut it down */
 
    AcpiGbl_Shutdown = TRUE;
    AcpiGbl_StartupFlags = 0;
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
 
#ifndef ACPI_ASL_COMPILER
 
    /* Close the AcpiEvent Handling */
 
    AcpiEvTerminate ();
 
    /* Delete any dynamic _OSI interfaces */
 
    AcpiUtInterfaceTerminate ();
#endif
 
    /* Close the Namespace */
 
    AcpiNsTerminate ();
 
    /* Delete the ACPI tables */
 
    AcpiTbTerminate ();
 
    /* Close the globals */
 
    AcpiUtTerminate ();
 
    /* Purge the local caches */
 
    (void) AcpiUtDeleteCaches ();
    return_VOID;
}