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

 *

 * Module Name: dsinit - Object initialization namespace walk

 *

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

/*

 * Copyright (C) 2000 - 2015, 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 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 

#include "accommon.h"

#include "acdispat.h"

#include "acnamesp.h"

#include "actables.h"

#define _COMPONENT          ACPI_DISPATCHER

ACPI_MODULE_NAME("dsinit")

/* Local prototypes */

static acpi_status

acpi_ds_init_one_object(acpi_handle obj_handle,

			u32 level, void *context, void **return_value);

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

 *

 * FUNCTION:    acpi_ds_init_one_object

 *

 * PARAMETERS:  obj_handle      - Node for the object

 *              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

 *

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

static acpi_status

acpi_ds_init_one_object(acpi_handle obj_handle,

			u32 level, void *context, void **return_value)

{

	struct acpi_init_walk_info *info =

	    (struct acpi_init_walk_info *)context;

	struct acpi_namespace_node *node =

	    (struct acpi_namespace_node *)obj_handle;

	acpi_status status;

	union acpi_operand_object *obj_desc;

	ACPI_FUNCTION_ENTRY();

	/*

	 * We are only interested in NS nodes owned by the table that

	 * was just loaded

	 */

	if (node->owner_id != info->owner_id) {

		return (AE_OK);

	}

	info->object_count++;

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

	switch (acpi_ns_get_type(obj_handle)) {

	case ACPI_TYPE_REGION:

		status = acpi_ds_initialize_region(obj_handle);

		if (ACPI_FAILURE(status)) {

			ACPI_EXCEPTION((AE_INFO, status,

					"During Region initialization %p [%4.4s]",

					obj_handle,

					acpi_ut_get_node_name(obj_handle)));

		}

		info->op_region_count++;

		break;

	case ACPI_TYPE_METHOD:

		/*

		 * Auto-serialization support. We will examine each method that is

		 * not_serialized to determine if it creates any Named objects. If

		 * it does, it will be marked serialized to prevent problems if

		 * the method is entered by two or more threads and an attempt is

		 * made to create the same named object twice -- which results in

		 * an AE_ALREADY_EXISTS exception and method abort.

		 */

		info->method_count++;

		obj_desc = acpi_ns_get_attached_object(node);

		if (!obj_desc) {

			break;

		}

		/* Ignore if already serialized */

		if (obj_desc->method.info_flags & ACPI_METHOD_SERIALIZED) {

			info->serial_method_count++;

			break;

		}

		if (acpi_gbl_auto_serialize_methods) {

			/* Parse/scan method and serialize it if necessary */

			acpi_ds_auto_serialize_method(node, obj_desc);

			if (obj_desc->method.

			    info_flags & ACPI_METHOD_SERIALIZED) {

				/* Method was just converted to Serialized */

				info->serial_method_count++;

				info->serialized_method_count++;

				break;

			}

		}

		info->non_serial_method_count++;

		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 "StartNode" and perform any

 *              necessary initialization on the objects found therein

 *

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

acpi_status

acpi_ds_initialize_objects(u32 table_index,

			   struct acpi_namespace_node * start_node)

{

	acpi_status status;

	struct acpi_init_walk_info info;

	struct acpi_table_header *table;

	acpi_owner_id owner_id;

	ACPI_FUNCTION_TRACE(ds_initialize_objects);

	status = acpi_tb_get_owner_id(table_index, &owner_id);

	if (ACPI_FAILURE(status)) {

		return_ACPI_STATUS(status);

	}

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,

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

	/* Set all init info to zero */

	memset(&info, 0, sizeof(struct acpi_init_walk_info));

	info.owner_id = owner_id;

	info.table_index = table_index;

	/* Walk entire namespace from the supplied root */

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);

	if (ACPI_FAILURE(status)) {

		return_ACPI_STATUS(status);

	}

	/*

	 * We don't use acpi_walk_namespace since we do not want to acquire

	 * the namespace reader lock.

	 */

	status =

	    acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,

				   ACPI_NS_WALK_UNLOCK, acpi_ds_init_one_object,

				   NULL, &info, NULL);

	if (ACPI_FAILURE(status)) {

		ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));

	}

	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);

	status = acpi_get_table_by_index(table_index, &table);

	if (ACPI_FAILURE(status)) {

		return_ACPI_STATUS(status);

	}

	/* DSDT is always the first AML table */

	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT)) {

		ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,

				      "\nInitializing Namespace objects:\n"));

	}

	/* Summary of objects initialized */

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,

			      "Table [%4.4s:%8.8s] (id %.2X) - %4u Objects with %3u Devices, "

			      "%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",

			      table->signature, table->oem_table_id, owner_id,

			      info.object_count, info.device_count,

			      info.op_region_count, info.method_count,

			      info.serial_method_count,

			      info.non_serial_method_count,

			      info.serialized_method_count));

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",

			  info.method_count, info.op_region_count));

	return_ACPI_STATUS(AE_OK);

}