1/****************************************************************************** 2 * 3 * Module Name: dsinit - Object initialization namespace walk 4 * 5 *****************************************************************************/ 6 7/* 8 * Copyright (C) 2000 - 2007, 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 44#include <acpi/acpi.h> 45#include <acpi/acdispat.h> 46#include <acpi/acnamesp.h> 47#include <acpi/actables.h> 48 49#define _COMPONENT ACPI_DISPATCHER 50ACPI_MODULE_NAME("dsinit") 51 52/* Local prototypes */ 53static acpi_status 54acpi_ds_init_one_object(acpi_handle obj_handle, 55 u32 level, void *context, void **return_value); 56 57/******************************************************************************* 58 * 59 * FUNCTION: acpi_ds_init_one_object 60 * 61 * PARAMETERS: obj_handle - Node for the object 62 * Level - Current nesting level 63 * Context - Points to a init info struct 64 * return_value - Not used 65 * 66 * RETURN: Status 67 * 68 * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object 69 * within the namespace. 70 * 71 * Currently, the only objects that require initialization are: 72 * 1) Methods 73 * 2) Operation Regions 74 * 75 ******************************************************************************/ 76 77static acpi_status 78acpi_ds_init_one_object(acpi_handle obj_handle, 79 u32 level, void *context, void **return_value) 80{ 81 struct acpi_init_walk_info *info = 82 (struct acpi_init_walk_info *)context; 83 struct acpi_namespace_node *node = 84 (struct acpi_namespace_node *)obj_handle; 85 acpi_object_type type; 86 acpi_status status; 87 88 ACPI_FUNCTION_ENTRY(); 89 90 /* 91 * We are only interested in NS nodes owned by the table that 92 * was just loaded 93 */ 94 if (node->owner_id != info->owner_id) { 95 return (AE_OK); 96 } 97 98 info->object_count++; 99 100 /* And even then, we are only interested in a few object types */ 101 102 type = acpi_ns_get_type(obj_handle); 103 104 switch (type) { 105 case ACPI_TYPE_REGION: 106 107 status = acpi_ds_initialize_region(obj_handle); 108 if (ACPI_FAILURE(status)) { 109 ACPI_EXCEPTION((AE_INFO, status, 110 "During Region initialization %p [%4.4s]", 111 obj_handle, 112 acpi_ut_get_node_name(obj_handle))); 113 } 114 115 info->op_region_count++; 116 break; 117 118 case ACPI_TYPE_METHOD: 119 120 info->method_count++; 121 break; 122 123 case ACPI_TYPE_DEVICE: 124 125 info->device_count++; 126 break; 127 128 default: 129 break; 130 } 131 132 /* 133 * We ignore errors from above, and always return OK, since 134 * we don't want to abort the walk on a single error. 135 */ 136 return (AE_OK); 137} 138 139/******************************************************************************* 140 * 141 * FUNCTION: acpi_ds_initialize_objects 142 * 143 * PARAMETERS: table_desc - Descriptor for parent ACPI table 144 * start_node - Root of subtree to be initialized. 145 * 146 * RETURN: Status 147 * 148 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any 149 * necessary initialization on the objects found therein 150 * 151 ******************************************************************************/ 152 153acpi_status 154acpi_ds_initialize_objects(acpi_native_uint table_index, 155 struct acpi_namespace_node * start_node) 156{ 157 acpi_status status; 158 struct acpi_init_walk_info info; 159 struct acpi_table_header *table; 160 acpi_owner_id owner_id; 161 162 ACPI_FUNCTION_TRACE(ds_initialize_objects); 163 164 status = acpi_tb_get_owner_id(table_index, &owner_id); 165 if (ACPI_FAILURE(status)) { 166 return_ACPI_STATUS(status); 167 } 168 169 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, 170 "**** Starting initialization of namespace objects ****\n")); 171 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:")); 172 173 info.method_count = 0; 174 info.op_region_count = 0; 175 info.object_count = 0; 176 info.device_count = 0; 177 info.table_index = table_index; 178 info.owner_id = owner_id; 179 180 /* Walk entire namespace from the supplied root */ 181 182 status = acpi_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX, 183 acpi_ds_init_one_object, &info, NULL); 184 if (ACPI_FAILURE(status)) { 185 ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace")); 186 } 187 188 status = acpi_get_table_by_index(table_index, &table); 189 if (ACPI_FAILURE(status)) { 190 return_ACPI_STATUS(status); 191 } 192 193 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, 194 "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n", 195 table->signature, owner_id, info.object_count, 196 info.device_count, info.method_count, 197 info.op_region_count)); 198 199 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, 200 "%hd Methods, %hd Regions\n", info.method_count, 201 info.op_region_count)); 202 203 return_ACPI_STATUS(AE_OK); 204} 205