acpica/utilities/utinit.c

/******************************************************************************
 *
 * Module Name: utinit - Common ACPI subsystem initialization
 *              $Revision: 1.131 $
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2006, Intel Corp.
 * All rights reserved.
 *
 * 2. License
 *
 * 2.1. This is your license from Intel Corp. under its intellectual property
 * rights.  You may have additional license terms from the party that provided
 * you this software, covering your right to use that party's intellectual
 * property rights.
 *
 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
 * copy of the source code appearing in this file ("Covered Code") an
 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
 * base code distributed originally by Intel ("Original Intel Code") to copy,
 * make derivatives, distribute, use and display any portion of the Covered
 * Code in any form, with the right to sublicense such rights; and
 *
 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
 * license (with the right to sublicense), under only those claims of Intel
 * patents that are infringed by the Original Intel Code, to make, use, sell,
 * offer to sell, and import the Covered Code and derivative works thereof
 * solely to the minimum extent necessary to exercise the above copyright
 * license, and in no event shall the patent license extend to any additions
 * to or modifications of the Original Intel Code.  No other license or right
 * is granted directly or by implication, estoppel or otherwise;
 *
 * The above copyright and patent license is granted only if the following
 * conditions are met:
 *
 * 3. Conditions
 *
 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification with rights to further distribute source must include
 * the above Copyright Notice, the above License, this list of Conditions,
 * and the following Disclaimer and Export Compliance provision.  In addition,
 * Licensee must cause all Covered Code to which Licensee contributes to
 * contain a file documenting the changes Licensee made to create that Covered
 * Code and the date of any change.  Licensee must include in that file the
 * documentation of any changes made by any predecessor Licensee.  Licensee
 * must include a prominent statement that the modification is derived,
 * directly or indirectly, from Original Intel Code.
 *
 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification without rights to further distribute source must
 * include the following Disclaimer and Export Compliance provision in the
 * documentation and/or other materials provided with distribution.  In
 * addition, Licensee may not authorize further sublicense of source of any
 * portion of the Covered Code, and must include terms to the effect that the
 * license from Licensee to its licensee is limited to the intellectual
 * property embodied in the software Licensee provides to its licensee, and
 * not to intellectual property embodied in modifications its licensee may
 * make.
 *
 * 3.3. Redistribution of Executable. Redistribution in executable form of any
 * substantial portion of the Covered Code or modification must reproduce the
 * above Copyright Notice, and the following Disclaimer and Export Compliance
 * provision in the documentation and/or other materials provided with the
 * distribution.
 *
 * 3.4. Intel retains all right, title, and interest in and to the Original
 * Intel Code.
 *
 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
 * Intel shall be used in advertising or otherwise to promote the sale, use or
 * other dealings in products derived from or relating to the Covered Code
 * without prior written authorization from Intel.
 *
 * 4. Disclaimer and Export Compliance
 *
 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
 * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
 * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
 * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
 * PARTICULAR PURPOSE.
 *
 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
 * LIMITED REMEDY.
 *
 * 4.3. Licensee shall not export, either directly or indirectly, any of this
 * software or system incorporating such software without first obtaining any
 * required license or other approval from the U. S. Department of Commerce or
 * any other agency or department of the United States Government.  In the
 * event Licensee exports any such software from the United States or
 * re-exports any such software from a foreign destination, Licensee shall
 * ensure that the distribution and export/re-export of the software is in
 * compliance with all laws, regulations, orders, or other restrictions of the
 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 * any of its subsidiaries will export/re-export any technical data, process,
 * software, or service, directly or indirectly, to any country for which the
 * United States government or any agency thereof requires an export license,
 * other governmental approval, or letter of assurance, without first obtaining
 * such license, approval or letter.
 *
 *****************************************************************************/


#define __UTINIT_C__

#include "acpi.h"
#include "acnamesp.h"
#include "acevents.h"

#define _COMPONENT          ACPI_UTILITIES
        ACPI_MODULE_NAME    ("utinit")

/* Local prototypes */

static void
AcpiUtFadtRegisterError (
    char                    *RegisterName,
    UINT32                  Value,
    UINT8                   Offset);

static void AcpiUtTerminate (
    void);


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtFadtRegisterError
 *
 * PARAMETERS:  RegisterName            - Pointer to string identifying register
 *              Value                   - Actual register contents value
 *              Offset                  - Byte offset in the FADT
 *
 * RETURN:      AE_BAD_VALUE
 *
 * DESCRIPTION: Display failure message
 *
 ******************************************************************************/

static void
AcpiUtFadtRegisterError (
    char                    *RegisterName,
    UINT32                  Value,
    UINT8                   Offset)
{

    ACPI_WARNING ((AE_INFO,
        "Invalid FADT value %s=%X at offset %X FADT=%p",
        RegisterName, Value, Offset, AcpiGbl_FADT));
}


/******************************************************************************
 *
 * FUNCTION:    AcpiUtValidateFadt
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Validate various ACPI registers in the FADT
 *
 ******************************************************************************/

ACPI_STATUS
AcpiUtValidateFadt (
    void)
{

    /*
     * Verify Fixed ACPI Description Table fields,
     * but don't abort on any problems, just display error
     */
    if (AcpiGbl_FADT->Pm1EvtLen < 4)
    {
        AcpiUtFadtRegisterError ("PM1_EVT_LEN",
                        (UINT32) AcpiGbl_FADT->Pm1EvtLen,
                        ACPI_FADT_OFFSET (Pm1EvtLen));
    }

    if (!AcpiGbl_FADT->Pm1CntLen)
    {
        AcpiUtFadtRegisterError ("PM1_CNT_LEN", 0,
                        ACPI_FADT_OFFSET (Pm1CntLen));
    }

    if (!ACPI_VALID_ADDRESS (AcpiGbl_FADT->XPm1aEvtBlk.Address))
    {
        AcpiUtFadtRegisterError ("X_PM1a_EVT_BLK", 0,
                        ACPI_FADT_OFFSET (XPm1aEvtBlk.Address));
    }

    if (!ACPI_VALID_ADDRESS (AcpiGbl_FADT->XPm1aCntBlk.Address))
    {
        AcpiUtFadtRegisterError ("X_PM1a_CNT_BLK", 0,
                        ACPI_FADT_OFFSET (XPm1aCntBlk.Address));
    }

    if (!ACPI_VALID_ADDRESS (AcpiGbl_FADT->XPmTmrBlk.Address))
    {
        AcpiUtFadtRegisterError ("X_PM_TMR_BLK", 0,
                        ACPI_FADT_OFFSET (XPmTmrBlk.Address));
    }

    if ((ACPI_VALID_ADDRESS (AcpiGbl_FADT->XPm2CntBlk.Address) &&
        !AcpiGbl_FADT->Pm2CntLen))
    {
        AcpiUtFadtRegisterError ("PM2_CNT_LEN",
                        (UINT32) AcpiGbl_FADT->Pm2CntLen,
                        ACPI_FADT_OFFSET (Pm2CntLen));
    }

    if (AcpiGbl_FADT->PmTmLen < 4)
    {
        AcpiUtFadtRegisterError ("PM_TM_LEN",
                        (UINT32) AcpiGbl_FADT->PmTmLen,
                        ACPI_FADT_OFFSET (PmTmLen));
    }

    /* Length of GPE blocks must be a multiple of 2 */

    if (ACPI_VALID_ADDRESS (AcpiGbl_FADT->XGpe0Blk.Address) &&
        (AcpiGbl_FADT->Gpe0BlkLen & 1))
    {
        AcpiUtFadtRegisterError ("(x)GPE0_BLK_LEN",
                        (UINT32) AcpiGbl_FADT->Gpe0BlkLen,
                        ACPI_FADT_OFFSET (Gpe0BlkLen));
    }

    if (ACPI_VALID_ADDRESS (AcpiGbl_FADT->XGpe1Blk.Address) &&
        (AcpiGbl_FADT->Gpe1BlkLen & 1))
    {
        AcpiUtFadtRegisterError ("(x)GPE1_BLK_LEN",
                        (UINT32) AcpiGbl_FADT->Gpe1BlkLen,
                        ACPI_FADT_OFFSET (Gpe1BlkLen));
    }

    return (AE_OK);
}


/******************************************************************************
 *
 * FUNCTION:    AcpiUtTerminate
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Free global memory
 *
 ******************************************************************************/

static void
AcpiUtTerminate (
    void)
{
    ACPI_GPE_BLOCK_INFO     *GpeBlock;
    ACPI_GPE_BLOCK_INFO     *NextGpeBlock;
    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo;
    ACPI_GPE_XRUPT_INFO     *NextGpeXruptInfo;


    ACPI_FUNCTION_TRACE (UtTerminate);


    /* Free global tables, etc. */
    /* 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;
    }

    return_VOID;
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtSubsystemShutdown
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Shutdown the various subsystems.  Don't 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"));

    /* Close the AcpiEvent Handling */

    AcpiEvTerminate ();

    /* Close the Namespace */

    AcpiNsTerminate ();

    /* Close the globals */

    AcpiUtTerminate ();

    /* Purge the local caches */

    (void) AcpiUtDeleteCaches ();
    return_VOID;
}