[linux.git] / drivers / acpi / namespace / nsinit.c

/******************************************************************************
 *
 * Module Name: nsinit - namespace initialization
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2005, 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/acnamesp.h>
#include <acpi/acdispat.h>
#include <acpi/acinterp.h>

#define _COMPONENT          ACPI_NAMESPACE
ACPI_MODULE_NAME("nsinit")

/* Local prototypes */
static acpi_status
acpi_ns_init_one_object(acpi_handle obj_handle,
			u32 level, void *context, void **return_value);

static acpi_status
acpi_ns_init_one_device(acpi_handle obj_handle,
			u32 nesting_level, void *context, void **return_value);

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_initialize_objects
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Walk the entire namespace and perform any necessary
 *              initialization on the objects found therein
 *
 ******************************************************************************/

acpi_status acpi_ns_initialize_objects(void)
{
	acpi_status status;
	struct acpi_init_walk_info info;

	ACPI_FUNCTION_TRACE("ns_initialize_objects");

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "**** Starting initialization of namespace objects ****\n"));
	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
			      "Completing Region/Field/Buffer/Package initialization:"));

	/* Set all init info to zero */

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

	/* Walk entire namespace from the supplied root */

	status = acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
				     ACPI_UINT32_MAX, acpi_ns_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,
			      "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n",
			      info.op_region_init, info.op_region_count,
			      info.field_init, info.field_count,
			      info.buffer_init, info.buffer_count,
			      info.package_init, info.package_count,
			      info.object_count));

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "%hd Control Methods found\n", info.method_count));
	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "%hd Op Regions found\n", info.op_region_count));

	return_ACPI_STATUS(AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_initialize_devices
 *
 * PARAMETERS:  None
 *
 * RETURN:      acpi_status
 *
 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
 *              This means running _INI on all present devices.
 *
 *              Note: We install PCI config space handler on region access,
 *              not here.
 *
 ******************************************************************************/

acpi_status acpi_ns_initialize_devices(void)
{
	acpi_status status;
	struct acpi_device_walk_info info;

	ACPI_FUNCTION_TRACE("ns_initialize_devices");

	/* Init counters */

	info.device_count = 0;
	info.num_STA = 0;
	info.num_INI = 0;

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
			      "Executing all Device _STA and_INI methods:"));

	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Walk namespace for all objects */

	status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
					ACPI_UINT32_MAX, TRUE,
					acpi_ns_init_one_device, &info, NULL);

	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);

	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,
			      "\n%hd Devices found containing: %hd _STA, %hd _INI methods\n",
			      info.device_count, info.num_STA, info.num_INI));

	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_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) Op Regions
 *
 ******************************************************************************/

static acpi_status
acpi_ns_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;
	struct acpi_namespace_node *node =
	    (struct acpi_namespace_node *)obj_handle;
	union acpi_operand_object *obj_desc;

	ACPI_FUNCTION_NAME("ns_init_one_object");

	info->object_count++;

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

	type = acpi_ns_get_type(obj_handle);
	obj_desc = acpi_ns_get_attached_object(node);
	if (!obj_desc) {
		return (AE_OK);
	}

	/* Increment counters for object types we are looking for */

	switch (type) {
	case ACPI_TYPE_REGION:
		info->op_region_count++;
		break;

	case ACPI_TYPE_BUFFER_FIELD:
		info->field_count++;
		break;

	case ACPI_TYPE_BUFFER:
		info->buffer_count++;
		break;

	case ACPI_TYPE_PACKAGE:
		info->package_count++;
		break;

	default:

		/* No init required, just exit now */
		return (AE_OK);
	}

	/*
	 * If the object is already initialized, nothing else to do
	 */
	if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
		return (AE_OK);
	}

	/*
	 * Must lock the interpreter before executing AML code
	 */
	status = acpi_ex_enter_interpreter();
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	/*
	 * Each of these types can contain executable AML code within the
	 * declaration.
	 */
	switch (type) {
	case ACPI_TYPE_REGION:

		info->op_region_init++;
		status = acpi_ds_get_region_arguments(obj_desc);
		break;

	case ACPI_TYPE_BUFFER_FIELD:

		info->field_init++;
		status = acpi_ds_get_buffer_field_arguments(obj_desc);
		break;

	case ACPI_TYPE_BUFFER:

		info->buffer_init++;
		status = acpi_ds_get_buffer_arguments(obj_desc);
		break;

	case ACPI_TYPE_PACKAGE:

		info->package_init++;
		status = acpi_ds_get_package_arguments(obj_desc);
		break;

	default:
		/* No other types can get here */
		break;
	}

	if (ACPI_FAILURE(status)) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_ERROR, "\n"));
		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
				  "Could not execute arguments for [%4.4s] (%s), %s\n",
				  acpi_ut_get_node_name(node),
				  acpi_ut_get_type_name(type),
				  acpi_format_exception(status)));
	}

	/*
	 * Print a dot for each object unless we are going to print the entire
	 * pathname
	 */
	if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
	}

	/*
	 * We ignore errors from above, and always return OK, since we don't want
	 * to abort the walk on any single error.
	 */
	acpi_ex_exit_interpreter();
	return (AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_init_one_device
 *
 * PARAMETERS:  acpi_walk_callback
 *
 * RETURN:      acpi_status
 *
 * DESCRIPTION: This is called once per device soon after ACPI is enabled
 *              to initialize each device. It determines if the device is
 *              present, and if so, calls _INI.
 *
 ******************************************************************************/

static acpi_status
acpi_ns_init_one_device(acpi_handle obj_handle,
			u32 nesting_level, void *context, void **return_value)
{
	struct acpi_device_walk_info *info =
	    (struct acpi_device_walk_info *)context;
	struct acpi_parameter_info pinfo;
	u32 flags;
	acpi_status status;

	ACPI_FUNCTION_TRACE("ns_init_one_device");

	pinfo.parameters = NULL;
	pinfo.parameter_type = ACPI_PARAM_ARGS;

	pinfo.node = acpi_ns_map_handle_to_node(obj_handle);
	if (!pinfo.node) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	/*
	 * We will run _STA/_INI on Devices, Processors and thermal_zones only
	 */
	if ((pinfo.node->type != ACPI_TYPE_DEVICE) &&
	    (pinfo.node->type != ACPI_TYPE_PROCESSOR) &&
	    (pinfo.node->type != ACPI_TYPE_THERMAL)) {
		return_ACPI_STATUS(AE_OK);
	}

	if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
	    (!(acpi_dbg_level & ACPI_LV_INFO))) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
	}

	info->device_count++;

	/*
	 * Run _STA to determine if we can run _INI on the device.
	 */
	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
						      pinfo.node,
						      METHOD_NAME__STA));
	status = acpi_ut_execute_STA(pinfo.node, &flags);

	if (ACPI_FAILURE(status)) {
		if (pinfo.node->type == ACPI_TYPE_DEVICE) {
			/* Ignore error and move on to next device */

			return_ACPI_STATUS(AE_OK);
		}

		/* _STA is not required for Processor or thermal_zone objects */
	} else {
		info->num_STA++;

		if (!(flags & 0x01)) {
			/* Don't look at children of a not present device */

			return_ACPI_STATUS(AE_CTRL_DEPTH);
		}
	}

	/*
	 * The device is present. Run _INI.
	 */
	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
						      pinfo.node,
						      METHOD_NAME__INI));
	status = acpi_ns_evaluate_relative(METHOD_NAME__INI, &pinfo);
	if (ACPI_FAILURE(status)) {
		/* No _INI (AE_NOT_FOUND) means device requires no initialization */

		if (status != AE_NOT_FOUND) {
			/* Ignore error and move on to next device */

#ifdef ACPI_DEBUG_OUTPUT
			char *scope_name =
			    acpi_ns_get_external_pathname(pinfo.node);

			ACPI_DEBUG_PRINT((ACPI_DB_WARN, "%s._INI failed: %s\n",
					  scope_name,
					  acpi_format_exception(status)));

			ACPI_MEM_FREE(scope_name);
#endif
		}

		status = AE_OK;
	} else {
		/* Delete any return object (especially if implicit_return is enabled) */

		if (pinfo.return_object) {
			acpi_ut_remove_reference(pinfo.return_object);
		}

		/* Count of successful INIs */

		info->num_INI++;
	}

	if (acpi_gbl_init_handler) {
		/* External initialization handler is present, call it */

		status =
		    acpi_gbl_init_handler(pinfo.node, ACPI_INIT_DEVICE_INI);
	}

	return_ACPI_STATUS(status);
}
Commit	Line	Data
1da177e4 LT	1	/******************************************************************************
	2	*
	3	* Module Name: nsinit - namespace initialization
	4	*
	5	*****************************************************************************/
	6
	7	/*
	8	* Copyright (C) 2000 - 2005, R. Byron Moore
	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/acnamesp.h>
	46	#include <acpi/acdispat.h>
	47	#include <acpi/acinterp.h>
	48
	49	#define _COMPONENT ACPI_NAMESPACE
4be44fcd	50	ACPI_MODULE_NAME("nsinit")
1da177e4	51
44f6c012	52	/* Local prototypes */
44f6c012	53	static acpi_status
4be44fcd LB	54	acpi_ns_init_one_object(acpi_handle obj_handle,
4be44fcd LB	55	u32 level, void context, void *return_value);
44f6c012 RM	56
44f6c012 RM	57	static acpi_status
4be44fcd LB	58	acpi_ns_init_one_device(acpi_handle obj_handle,
4be44fcd LB	59	u32 nesting_level, void context, void *return_value);
1da177e4 LT	60
	61	/*******************************************************************************
	62	*
	63	* FUNCTION: acpi_ns_initialize_objects
	64	*
	65	* PARAMETERS: None
	66	*
	67	* RETURN: Status
	68	*
	69	* DESCRIPTION: Walk the entire namespace and perform any necessary
	70	* initialization on the objects found therein
	71	*
	72	******************************************************************************/
	73
4be44fcd	74	acpi_status acpi_ns_initialize_objects(void)
1da177e4	75	{
4be44fcd LB	76	acpi_status status;
4be44fcd LB	77	struct acpi_init_walk_info info;
1da177e4	78
4be44fcd	79	ACPI_FUNCTION_TRACE("ns_initialize_objects");
1da177e4	80
4be44fcd LB	81	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
	82	"** Starting initialization of namespace objects **\n"));
	83	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
	84	"Completing Region/Field/Buffer/Package initialization:"));
1da177e4 LT	85
	86	/* Set all init info to zero */
	87
4be44fcd	88	ACPI_MEMSET(&info, 0, sizeof(struct acpi_init_walk_info));
1da177e4 LT	89
	90	/* Walk entire namespace from the supplied root */
	91
4be44fcd LB	92	status = acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
	93	ACPI_UINT32_MAX, acpi_ns_init_one_object,
	94	&info, NULL);
	95	if (ACPI_FAILURE(status)) {
	96	ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "walk_namespace failed! %s\n",
	97	acpi_format_exception(status)));
1da177e4 LT	98	}
1da177e4 LT	99
4be44fcd LB	100	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
	101	"\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n",
	102	info.op_region_init, info.op_region_count,
	103	info.field_init, info.field_count,
	104	info.buffer_init, info.buffer_count,
	105	info.package_init, info.package_count,
	106	info.object_count));
1da177e4	107
4be44fcd LB	108	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
	109	"%hd Control Methods found\n", info.method_count));
	110	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
	111	"%hd Op Regions found\n", info.op_region_count));
1da177e4	112
4be44fcd	113	return_ACPI_STATUS(AE_OK);
1da177e4 LT	114	}
1da177e4 LT	115
1da177e4 LT	116	/*******************************************************************************
	117	*
	118	* FUNCTION: acpi_ns_initialize_devices
	119	*
	120	* PARAMETERS: None
	121	*
	122	* RETURN: acpi_status
	123	*
	124	* DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
	125	* This means running _INI on all present devices.
	126	*
	127	* Note: We install PCI config space handler on region access,
	128	* not here.
	129	*
	130	******************************************************************************/
	131
4be44fcd	132	acpi_status acpi_ns_initialize_devices(void)
1da177e4	133	{
4be44fcd LB	134	acpi_status status;
4be44fcd LB	135	struct acpi_device_walk_info info;
1da177e4	136
4be44fcd	137	ACPI_FUNCTION_TRACE("ns_initialize_devices");
1da177e4 LT	138
	139	/* Init counters */
	140
	141	info.device_count = 0;
	142	info.num_STA = 0;
	143	info.num_INI = 0;
	144
4be44fcd LB	145	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
4be44fcd LB	146	"Executing all Device _STA and_INI methods:"));
1da177e4	147
4be44fcd LB	148	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
	149	if (ACPI_FAILURE(status)) {
	150	return_ACPI_STATUS(status);
1da177e4 LT	151	}
	152
	153	/* Walk namespace for all objects */
	154
4be44fcd LB	155	status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
	156	ACPI_UINT32_MAX, TRUE,
	157	acpi_ns_init_one_device, &info, NULL);
1da177e4	158
4be44fcd	159	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
1da177e4	160
4be44fcd LB	161	if (ACPI_FAILURE(status)) {
	162	ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "walk_namespace failed! %s\n",
	163	acpi_format_exception(status)));
1da177e4 LT	164	}
1da177e4 LT	165
4be44fcd LB	166	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
	167	"\n%hd Devices found containing: %hd _STA, %hd _INI methods\n",
	168	info.device_count, info.num_STA, info.num_INI));
1da177e4	169
4be44fcd	170	return_ACPI_STATUS(status);
1da177e4 LT	171	}
1da177e4 LT	172
1da177e4 LT	173	/*******************************************************************************
	174	*
	175	* FUNCTION: acpi_ns_init_one_object
	176	*
	177	* PARAMETERS: obj_handle - Node
	178	* Level - Current nesting level
	179	* Context - Points to a init info struct
	180	* return_value - Not used
	181	*
	182	* RETURN: Status
	183	*
	184	* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
	185	* within the namespace.
	186	*
	187	* Currently, the only objects that require initialization are:
	188	* 1) Methods
	189	* 2) Op Regions
	190	*
	191	******************************************************************************/
	192
44f6c012	193	static acpi_status
4be44fcd LB	194	acpi_ns_init_one_object(acpi_handle obj_handle,
4be44fcd LB	195	u32 level, void context, void *return_value)
1da177e4	196	{
4be44fcd LB	197	acpi_object_type type;
	198	acpi_status status;
	199	struct acpi_init_walk_info *info =
	200	(struct acpi_init_walk_info *)context;
	201	struct acpi_namespace_node *node =
	202	(struct acpi_namespace_node *)obj_handle;
	203	union acpi_operand_object *obj_desc;
1da177e4	204
4be44fcd	205	ACPI_FUNCTION_NAME("ns_init_one_object");
1da177e4 LT	206
	207	info->object_count++;
	208
	209	/* And even then, we are only interested in a few object types */
	210
4be44fcd LB	211	type = acpi_ns_get_type(obj_handle);
4be44fcd LB	212	obj_desc = acpi_ns_get_attached_object(node);
1da177e4 LT	213	if (!obj_desc) {
	214	return (AE_OK);
	215	}
	216
	217	/* Increment counters for object types we are looking for */
	218
	219	switch (type) {
	220	case ACPI_TYPE_REGION:
	221	info->op_region_count++;
	222	break;
	223
	224	case ACPI_TYPE_BUFFER_FIELD:
	225	info->field_count++;
	226	break;
	227
	228	case ACPI_TYPE_BUFFER:
	229	info->buffer_count++;
	230	break;
	231
	232	case ACPI_TYPE_PACKAGE:
	233	info->package_count++;
	234	break;
	235
	236	default:
	237
	238	/* No init required, just exit now */
	239	return (AE_OK);
	240	}
	241
	242	/*
	243	* If the object is already initialized, nothing else to do
	244	*/
	245	if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
	246	return (AE_OK);
	247	}
	248
	249	/*
	250	* Must lock the interpreter before executing AML code
	251	*/
4be44fcd LB	252	status = acpi_ex_enter_interpreter();
4be44fcd LB	253	if (ACPI_FAILURE(status)) {
1da177e4 LT	254	return (status);
	255	}
	256
	257	/*
	258	* Each of these types can contain executable AML code within the
	259	* declaration.
	260	*/
	261	switch (type) {
	262	case ACPI_TYPE_REGION:
	263
	264	info->op_region_init++;
4be44fcd	265	status = acpi_ds_get_region_arguments(obj_desc);
1da177e4 LT	266	break;
	267
	268	case ACPI_TYPE_BUFFER_FIELD:
	269
	270	info->field_init++;
4be44fcd	271	status = acpi_ds_get_buffer_field_arguments(obj_desc);
1da177e4 LT	272	break;
	273
	274	case ACPI_TYPE_BUFFER:
	275
	276	info->buffer_init++;
4be44fcd	277	status = acpi_ds_get_buffer_arguments(obj_desc);
1da177e4 LT	278	break;
	279
	280	case ACPI_TYPE_PACKAGE:
	281
	282	info->package_init++;
4be44fcd	283	status = acpi_ds_get_package_arguments(obj_desc);
1da177e4 LT	284	break;
	285
	286	default:
	287	/* No other types can get here */
	288	break;
	289	}
	290
4be44fcd LB	291	if (ACPI_FAILURE(status)) {
	292	ACPI_DEBUG_PRINT_RAW((ACPI_DB_ERROR, "\n"));
	293	ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
	294	"Could not execute arguments for [%4.4s] (%s), %s\n",
	295	acpi_ut_get_node_name(node),
	296	acpi_ut_get_type_name(type),
	297	acpi_format_exception(status)));
1da177e4 LT	298	}
	299
	300	/*
	301	* Print a dot for each object unless we are going to print the entire
	302	* pathname
	303	*/
	304	if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
4be44fcd	305	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
1da177e4 LT	306	}
	307
	308	/*
	309	* We ignore errors from above, and always return OK, since we don't want
	310	* to abort the walk on any single error.
	311	*/
4be44fcd	312	acpi_ex_exit_interpreter();
1da177e4 LT	313	return (AE_OK);
	314	}
	315
1da177e4 LT	316	/*******************************************************************************
	317	*
	318	* FUNCTION: acpi_ns_init_one_device
	319	*
	320	* PARAMETERS: acpi_walk_callback
	321	*
	322	* RETURN: acpi_status
	323	*
	324	* DESCRIPTION: This is called once per device soon after ACPI is enabled
	325	* to initialize each device. It determines if the device is
	326	* present, and if so, calls _INI.
	327	*
	328	******************************************************************************/
	329
44f6c012	330	static acpi_status
4be44fcd LB	331	acpi_ns_init_one_device(acpi_handle obj_handle,
4be44fcd LB	332	u32 nesting_level, void context, void *return_value)
1da177e4	333	{
4be44fcd LB	334	struct acpi_device_walk_info *info =
	335	(struct acpi_device_walk_info *)context;
	336	struct acpi_parameter_info pinfo;
	337	u32 flags;
	338	acpi_status status;
1da177e4	339
4be44fcd	340	ACPI_FUNCTION_TRACE("ns_init_one_device");
1da177e4 LT	341
	342	pinfo.parameters = NULL;
	343	pinfo.parameter_type = ACPI_PARAM_ARGS;
	344
4be44fcd	345	pinfo.node = acpi_ns_map_handle_to_node(obj_handle);
1da177e4	346	if (!pinfo.node) {
4be44fcd	347	return_ACPI_STATUS(AE_BAD_PARAMETER);
1da177e4 LT	348	}
	349
	350	/*
	351	* We will run _STA/_INI on Devices, Processors and thermal_zones only
	352	*/
4be44fcd LB	353	if ((pinfo.node->type != ACPI_TYPE_DEVICE) &&
	354	(pinfo.node->type != ACPI_TYPE_PROCESSOR) &&
	355	(pinfo.node->type != ACPI_TYPE_THERMAL)) {
	356	return_ACPI_STATUS(AE_OK);
1da177e4 LT	357	}
	358
	359	if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
4be44fcd LB	360	(!(acpi_dbg_level & ACPI_LV_INFO))) {
4be44fcd LB	361	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
1da177e4 LT	362	}
	363
	364	info->device_count++;
	365
	366	/*
	367	* Run _STA to determine if we can run _INI on the device.
	368	*/
4be44fcd LB	369	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
	370	pinfo.node,
	371	METHOD_NAME__STA));
	372	status = acpi_ut_execute_STA(pinfo.node, &flags);
1da177e4	373
4be44fcd	374	if (ACPI_FAILURE(status)) {
1da177e4 LT	375	if (pinfo.node->type == ACPI_TYPE_DEVICE) {
	376	/* Ignore error and move on to next device */
	377
4be44fcd	378	return_ACPI_STATUS(AE_OK);
1da177e4 LT	379	}
	380
	381	/* _STA is not required for Processor or thermal_zone objects */
4be44fcd	382	} else {
1da177e4 LT	383	info->num_STA++;
	384
	385	if (!(flags & 0x01)) {
	386	/* Don't look at children of a not present device */
	387
	388	return_ACPI_STATUS(AE_CTRL_DEPTH);
	389	}
	390	}
	391
	392	/*
	393	* The device is present. Run _INI.
	394	*/
4be44fcd LB	395	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD,
	396	pinfo.node,
	397	METHOD_NAME__INI));
	398	status = acpi_ns_evaluate_relative(METHOD_NAME__INI, &pinfo);
	399	if (ACPI_FAILURE(status)) {
1da177e4 LT	400	/* No _INI (AE_NOT_FOUND) means device requires no initialization */
	401
	402	if (status != AE_NOT_FOUND) {
	403	/* Ignore error and move on to next device */
	404
	405	#ifdef ACPI_DEBUG_OUTPUT
4be44fcd LB	406	char *scope_name =
4be44fcd LB	407	acpi_ns_get_external_pathname(pinfo.node);
1da177e4	408
4be44fcd LB	409	ACPI_DEBUG_PRINT((ACPI_DB_WARN, "%s._INI failed: %s\n",
	410	scope_name,
	411	acpi_format_exception(status)));
1da177e4	412
4be44fcd	413	ACPI_MEM_FREE(scope_name);
1da177e4 LT	414	#endif
	415	}
	416
	417	status = AE_OK;
4be44fcd	418	} else {
1da177e4 LT	419	/* Delete any return object (especially if implicit_return is enabled) */
	420
	421	if (pinfo.return_object) {
4be44fcd	422	acpi_ut_remove_reference(pinfo.return_object);
1da177e4 LT	423	}
	424
	425	/* Count of successful INIs */
	426
	427	info->num_INI++;
	428	}
	429
	430	if (acpi_gbl_init_handler) {
	431	/* External initialization handler is present, call it */
	432
4be44fcd LB	433	status =
4be44fcd LB	434	acpi_gbl_init_handler(pinfo.node, ACPI_INIT_DEVICE_INI);
1da177e4 LT	435	}
1da177e4 LT	436
4be44fcd	437	return_ACPI_STATUS(status);
1da177e4	438	}