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

 *

 * Module Name: dsinit - Object initialization namespace walk

 *

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

/*

 * Copyright (C) 2000 - 2004, R. Byron Moore

 * 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 MERCHANTIBILITY 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/acpi.h>

#include <acpi/acdispat.h>

#include <acpi/acnamesp.h>

#define _COMPONENT          ACPI_DISPATCHER

         ACPI_MODULE_NAME    ("dsinit")

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

 *

 * FUNCTION:    acpi_ds_init_one_object

 *

 * PARAMETERS:  obj_handle      - Node

 *              Level           - Current nesting level

 *              Context         - Points to a init info struct

 *              return_value    - Not used

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object

 *              within the namespace.

 *

 *              Currently, the only objects that require initialization are:

 *              1) Methods

 *              2) Operation Regions

 *

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

acpi_status

acpi_ds_init_one_object (

        acpi_handle                     obj_handle,

        u32                             level,

        void                            *context,

        void                            **return_value)

{

        acpi_object_type                type;

        acpi_status                     status;

        struct acpi_init_walk_info      *info = (struct acpi_init_walk_info *) context;

        ACPI_FUNCTION_NAME ("ds_init_one_object");

        /*

         * We are only interested in objects owned by the table that

         * was just loaded

         */

        if (((struct acpi_namespace_node *) obj_handle)->owner_id !=

                        info->table_desc->table_id) {

                return (AE_OK);

        }

        info->object_count++;

        /* And even then, we are only interested in a few object types */

        type = acpi_ns_get_type (obj_handle);

        switch (type) {

        case ACPI_TYPE_REGION:

                status = acpi_ds_initialize_region (obj_handle);

                if (ACPI_FAILURE (status)) {

                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region %p [%4.4s] - Init failure, %s\n",

                                obj_handle, acpi_ut_get_node_name (obj_handle),

                                acpi_format_exception (status)));

                }

                info->op_region_count++;

                break;

        case ACPI_TYPE_METHOD:

                info->method_count++;

                /* Print a dot for each method unless we are going to print the entire pathname */

                if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {

                        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));

                }

                /*

                 * Set the execution data width (32 or 64) based upon the

                 * revision number of the parent ACPI table.

                 * TBD: This is really for possible future support of integer width

                 * on a per-table basis. Currently, we just use a global for the width.

                 */

                if (info->table_desc->pointer->revision == 1) {

                        ((struct acpi_namespace_node *) obj_handle)->flags |= ANOBJ_DATA_WIDTH_32;

                }

                /*

                 * Always parse methods to detect errors, we will delete

                 * the parse tree below

                 */

                status = acpi_ds_parse_method (obj_handle);

                if (ACPI_FAILURE (status)) {

                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Method %p [%4.4s] - parse failure, %s\n",

                                obj_handle, acpi_ut_get_node_name (obj_handle),

                                acpi_format_exception (status)));

                        /* This parse failed, but we will continue parsing more methods */

                        break;

                }

                /*

                 * Delete the parse tree.  We simply re-parse the method

                 * for every execution since there isn't much overhead

                 */

                acpi_ns_delete_namespace_subtree (obj_handle);

                acpi_ns_delete_namespace_by_owner (((struct acpi_namespace_node *) obj_handle)->object->method.owning_id);

                break;

        case ACPI_TYPE_DEVICE:

                info->device_count++;

                break;

        default:

                break;

        }

        /*

         * We ignore errors from above, and always return OK, since

         * we don't want to abort the walk on a single error.

         */

        return (AE_OK);

}

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

 *

 * FUNCTION:    acpi_ds_initialize_objects

 *

 * PARAMETERS:  table_desc      - Descriptor for parent ACPI table

 *              start_node      - Root of subtree to be initialized.

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Walk the namespace starting at "start_node" and perform any

 *              necessary initialization on the objects found therein

 *

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

acpi_status

acpi_ds_initialize_objects (

        struct acpi_table_desc          *table_desc,

        struct acpi_namespace_node      *start_node)

{

        acpi_status                     status;

        struct acpi_init_walk_info      info;

        ACPI_FUNCTION_TRACE ("ds_initialize_objects");

        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,

                "**** Starting initialization of namespace objects ****\n"));

        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));

        info.method_count   = 0;

        info.op_region_count = 0;

        info.object_count   = 0;

        info.device_count   = 0;

        info.table_desc     = table_desc;

        /* Walk entire namespace from the supplied root */

        status = acpi_walk_namespace (ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,

                          acpi_ds_init_one_object, &info, NULL);

        if (ACPI_FAILURE (status)) {

                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed, %s\n",

                        acpi_format_exception (status)));

        }

        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,

                "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n",

                table_desc->pointer->signature, table_desc->table_id, info.object_count,

                info.device_count, info.method_count, info.op_region_count));

        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,

                "%hd Methods, %hd Regions\n", info.method_count, info.op_region_count));

        return_ACPI_STATUS (AE_OK);

}