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/******************************************************************************

 *

 * Module Name: nsparse - namespace interface to AML parser

 *

 *****************************************************************************/

/******************************************************************************

 *

 * 1. Copyright Notice

 *

 * Some or all of this work - Copyright (c) 1999 - 2010, 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 __NSPARSE_C__

#include "acpi.h"

#include "accommon.h"

#include "acnamesp.h"

#include "acparser.h"

#include "acdispat.h"

#include "actables.h"

#define _COMPONENT          ACPI_NAMESPACE

        ACPI_MODULE_NAME    ("nsparse")

/*******************************************************************************

 *

 * FUNCTION:    NsOneCompleteParse

 *

 * PARAMETERS:  PassNumber              - 1 or 2

 *              TableDesc               - The table to be parsed.

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Perform one complete parse of an ACPI/AML table.

 *

 ******************************************************************************/

ACPI_STATUS

AcpiNsOneCompleteParse (

    UINT32                  PassNumber,

    UINT32                  TableIndex,

    ACPI_NAMESPACE_NODE     *StartNode)

{

    ACPI_PARSE_OBJECT       *ParseRoot;

    ACPI_STATUS             Status;

    UINT32                  AmlLength;

    UINT8                   *AmlStart;

    ACPI_WALK_STATE         *WalkState;

    ACPI_TABLE_HEADER       *Table;

    ACPI_OWNER_ID           OwnerId;

    ACPI_FUNCTION_TRACE (NsOneCompleteParse);

    Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);

    if (ACPI_FAILURE (Status))

    {

        return_ACPI_STATUS (Status);

    }

    /* Create and init a Root Node */

    ParseRoot = AcpiPsCreateScopeOp ();

    if (!ParseRoot)

    {

        return_ACPI_STATUS (AE_NO_MEMORY);

    }

    /* Create and initialize a new walk state */

    WalkState = AcpiDsCreateWalkState (OwnerId, NULL, NULL, NULL);

    if (!WalkState)

    {

        AcpiPsFreeOp (ParseRoot);

        return_ACPI_STATUS (AE_NO_MEMORY);

    }

    Status = AcpiGetTableByIndex (TableIndex, &Table);

    if (ACPI_FAILURE (Status))

    {

        AcpiDsDeleteWalkState (WalkState);

        AcpiPsFreeOp (ParseRoot);

        return_ACPI_STATUS (Status);

    }

    /* Table must consist of at least a complete header */

    if (Table->Length < sizeof (ACPI_TABLE_HEADER))

    {

        Status = AE_BAD_HEADER;

    }

    else

    {

        AmlStart = (UINT8 *) Table + sizeof (ACPI_TABLE_HEADER);

        AmlLength = Table->Length - sizeof (ACPI_TABLE_HEADER);

        Status = AcpiDsInitAmlWalk (WalkState, ParseRoot, NULL,

                    AmlStart, AmlLength, NULL, (UINT8) PassNumber);

    }

    if (ACPI_FAILURE (Status))

    {

        AcpiDsDeleteWalkState (WalkState);

        goto Cleanup;

    }

    /* StartNode is the default location to load the table  */

    if (StartNode && StartNode != AcpiGbl_RootNode)

    {

        Status = AcpiDsScopeStackPush (StartNode, ACPI_TYPE_METHOD, WalkState);

        if (ACPI_FAILURE (Status))

        {

            AcpiDsDeleteWalkState (WalkState);

            goto Cleanup;

        }

    }

    /* Parse the AML */

    ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %u parse\n", PassNumber));

    Status = AcpiPsParseAml (WalkState);

Cleanup:

    AcpiPsDeleteParseTree (ParseRoot);

    return_ACPI_STATUS (Status);

}

/*******************************************************************************

 *

 * FUNCTION:    AcpiNsParseTable

 *

 * PARAMETERS:  TableDesc       - An ACPI table descriptor for table to parse

 *              StartNode       - Where to enter the table into the namespace

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops

 *

 ******************************************************************************/

ACPI_STATUS

AcpiNsParseTable (

    UINT32                  TableIndex,

    ACPI_NAMESPACE_NODE     *StartNode)

{

    ACPI_STATUS             Status;

    ACPI_FUNCTION_TRACE (NsParseTable);

    /*

     * AML Parse, pass 1

     *

     * In this pass, we load most of the namespace.  Control methods

     * are not parsed until later.  A parse tree is not created.  Instead,

     * each Parser Op subtree is deleted when it is finished.  This saves

     * a great deal of memory, and allows a small cache of parse objects

     * to service the entire parse.  The second pass of the parse then

     * performs another complete parse of the AML.

     */

    ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 1\n"));

    Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS1,

                TableIndex, StartNode);

    if (ACPI_FAILURE (Status))

    {

        return_ACPI_STATUS (Status);

    }

    /*

     * AML Parse, pass 2

     *

     * In this pass, we resolve forward references and other things

     * that could not be completed during the first pass.

     * Another complete parse of the AML is performed, but the

     * overhead of this is compensated for by the fact that the

     * parse objects are all cached.

     */

    ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 2\n"));

    Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS2,

                TableIndex, StartNode);

    if (ACPI_FAILURE (Status))

    {

        return_ACPI_STATUS (Status);

    }

    return_ACPI_STATUS (Status);

}