[deliverable/linux.git] / drivers / acpi / dispatcher / dsinit.c

/******************************************************************************
 *
 * Module Name: dsinit - Object initialization namespace walk
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2006, 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")

/* 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_object_type type;
	acpi_status status;

	ACPI_FUNCTION_ENTRY();

	/*
	 * We are only interested in NS nodes owned by the table that
	 * was just loaded
	 */
	if (node->owner_id != info->table_desc->owner_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_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:

		/*
		 * 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) {
			node->flags |= ANOBJ_DATA_WIDTH_32;
		}

		info->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(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_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
	}

	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->owner_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);
}
Commit	Line	Data
1da177e4 LT	1	/******************************************************************************
	2	*
	3	* Module Name: dsinit - Object initialization namespace walk
	4	*
	5	*****************************************************************************/
	6
	7	/*
4a90c7e8	8	* Copyright (C) 2000 - 2006, R. Byron Moore
1da177e4 LT	9	* All rights reserved.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions, and the following disclaimer,
	16	* without modification.
	17	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	18	* substantially similar to the "NO WARRANTY" disclaimer below
	19	* ("Disclaimer") and any redistribution must be conditioned upon
	20	* including a substantially similar Disclaimer requirement for further
	21	* binary redistribution.
	22	* 3. Neither the names of the above-listed copyright holders nor the names
	23	* of any contributors may be used to endorse or promote products derived
	24	* from this software without specific prior written permission.
	25	*
	26	* Alternatively, this software may be distributed under the terms of the
	27	* GNU General Public License ("GPL") version 2 as published by the Free
	28	* Software Foundation.
	29	*
	30	* NO WARRANTY
	31	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	32	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	33	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	34	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	35	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	36	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	37	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	38	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	39	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	40	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	41	* POSSIBILITY OF SUCH DAMAGES.
	42	*/
	43
1da177e4 LT	44	#include <acpi/acpi.h>
	45	#include <acpi/acdispat.h>
	46	#include <acpi/acnamesp.h>
	47
	48	#define _COMPONENT ACPI_DISPATCHER
4be44fcd	49	ACPI_MODULE_NAME("dsinit")
1da177e4	50
44f6c012	51	/* Local prototypes */
44f6c012	52	static acpi_status
4be44fcd LB	53	acpi_ds_init_one_object(acpi_handle obj_handle,
4be44fcd LB	54	u32 level, void context, void *return_value);
1da177e4 LT	55
	56	/*******************************************************************************
	57	*
	58	* FUNCTION: acpi_ds_init_one_object
	59	*
44f6c012	60	* PARAMETERS: obj_handle - Node for the object
1da177e4 LT	61	* Level - Current nesting level
	62	* Context - Points to a init info struct
	63	* return_value - Not used
	64	*
	65	* RETURN: Status
	66	*
	67	* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
	68	* within the namespace.
	69	*
	70	* Currently, the only objects that require initialization are:
	71	* 1) Methods
	72	* 2) Operation Regions
	73	*
	74	******************************************************************************/
	75
44f6c012	76	static acpi_status
4be44fcd LB	77	acpi_ds_init_one_object(acpi_handle obj_handle,
4be44fcd LB	78	u32 level, void context, void *return_value)
1da177e4	79	{
4be44fcd LB	80	struct acpi_init_walk_info *info =
	81	(struct acpi_init_walk_info *)context;
	82	struct acpi_namespace_node *node =
	83	(struct acpi_namespace_node *)obj_handle;
	84	acpi_object_type type;
	85	acpi_status status;
1da177e4	86
4a90c7e8	87	ACPI_FUNCTION_ENTRY();
1da177e4 LT	88
1da177e4 LT	89	/*
0c9938cc	90	* We are only interested in NS nodes owned by the table that
1da177e4 LT	91	* was just loaded
1da177e4 LT	92	*/
0c9938cc	93	if (node->owner_id != info->table_desc->owner_id) {
1da177e4 LT	94	return (AE_OK);
	95	}
	96
	97	info->object_count++;
	98
	99	/* And even then, we are only interested in a few object types */
	100
4be44fcd	101	type = acpi_ns_get_type(obj_handle);
1da177e4 LT	102
	103	switch (type) {
	104	case ACPI_TYPE_REGION:
	105
4be44fcd LB	106	status = acpi_ds_initialize_region(obj_handle);
4be44fcd LB	107	if (ACPI_FAILURE(status)) {
b8e4d893 BM	108	ACPI_EXCEPTION((AE_INFO, status,
	109	"During Region initialization %p [%4.4s]",
	110	obj_handle,
	111	acpi_ut_get_node_name(obj_handle)));
1da177e4 LT	112	}
	113
	114	info->op_region_count++;
	115	break;
	116
1da177e4 LT	117	case ACPI_TYPE_METHOD:
1da177e4 LT	118
1da177e4 LT	119	/*
	120	* Set the execution data width (32 or 64) based upon the
	121	* revision number of the parent ACPI table.
	122	* TBD: This is really for possible future support of integer width
	123	* on a per-table basis. Currently, we just use a global for the width.
	124	*/
	125	if (info->table_desc->pointer->revision == 1) {
0c9938cc	126	node->flags \|= ANOBJ_DATA_WIDTH_32;
1da177e4 LT	127	}
1da177e4 LT	128
0c9938cc	129	info->method_count++;
1da177e4 LT	130	break;
1da177e4 LT	131
1da177e4 LT	132	case ACPI_TYPE_DEVICE:
	133
	134	info->device_count++;
	135	break;
	136
1da177e4 LT	137	default:
	138	break;
	139	}
	140
	141	/*
	142	* We ignore errors from above, and always return OK, since
	143	* we don't want to abort the walk on a single error.
	144	*/
	145	return (AE_OK);
	146	}
	147
1da177e4 LT	148	/*******************************************************************************
	149	*
	150	* FUNCTION: acpi_ds_initialize_objects
	151	*
	152	* PARAMETERS: table_desc - Descriptor for parent ACPI table
	153	* start_node - Root of subtree to be initialized.
	154	*
	155	* RETURN: Status
	156	*
b229cf92	157	* DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
1da177e4 LT	158	* necessary initialization on the objects found therein
	159	*
	160	******************************************************************************/
	161
	162	acpi_status
4be44fcd LB	163	acpi_ds_initialize_objects(struct acpi_table_desc * table_desc,
4be44fcd LB	164	struct acpi_namespace_node * start_node)
1da177e4	165	{
4be44fcd LB	166	acpi_status status;
4be44fcd LB	167	struct acpi_init_walk_info info;
1da177e4	168
b229cf92	169	ACPI_FUNCTION_TRACE(ds_initialize_objects);
1da177e4	170
4be44fcd LB	171	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
	172	"** Starting initialization of namespace objects **\n"));
	173	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:"));
1da177e4	174
4be44fcd	175	info.method_count = 0;
1da177e4	176	info.op_region_count = 0;
4be44fcd LB	177	info.object_count = 0;
	178	info.device_count = 0;
	179	info.table_desc = table_desc;
1da177e4 LT	180
	181	/* Walk entire namespace from the supplied root */
	182
4be44fcd LB	183	status = acpi_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
	184	acpi_ds_init_one_object, &info, NULL);
	185	if (ACPI_FAILURE(status)) {
b229cf92	186	ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
1da177e4 LT	187	}
1da177e4 LT	188
4be44fcd LB	189	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
	190	"\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
	191	table_desc->pointer->signature,
	192	table_desc->owner_id, info.object_count,
	193	info.device_count, info.method_count,
	194	info.op_region_count));
1da177e4	195
4be44fcd LB	196	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
	197	"%hd Methods, %hd Regions\n", info.method_count,
	198	info.op_region_count));
1da177e4	199
4be44fcd	200	return_ACPI_STATUS(AE_OK);
1da177e4	201	}