/****************************************************************************** * * Module Name: dsinit - Object initialization namespace walk * *****************************************************************************/ /* * Copyright (C) 2000 - 2012, 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 <acpi/acpi.h> #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_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->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: 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(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")); ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:")); /* Set all init info to zero */ ACPI_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); } ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n", table->signature, owner_id, info.object_count, info.device_count, info.method_count, info.op_region_count)); ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n", info.method_count, info.op_region_count)); return_ACPI_STATUS(AE_OK); }