Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: nsutils - Utilities for accessing ACPI namespace, accessing |
| 4 | * parents and siblings and Scope manipulation |
| 5 | * |
| 6 | *****************************************************************************/ |
| 7 | |
| 8 | /* |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 9 | * Copyright (C) 2000 - 2006, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * All rights reserved. |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions, and the following disclaimer, |
| 17 | * without modification. |
| 18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 19 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 20 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 21 | * including a substantially similar Disclaimer requirement for further |
| 22 | * binary redistribution. |
| 23 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 24 | * of any contributors may be used to endorse or promote products derived |
| 25 | * from this software without specific prior written permission. |
| 26 | * |
| 27 | * Alternatively, this software may be distributed under the terms of the |
| 28 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 29 | * Software Foundation. |
| 30 | * |
| 31 | * NO WARRANTY |
| 32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 42 | * POSSIBILITY OF SUCH DAMAGES. |
| 43 | */ |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <acpi/acpi.h> |
| 46 | #include <acpi/acnamesp.h> |
| 47 | #include <acpi/amlcode.h> |
| 48 | #include <acpi/actables.h> |
| 49 | |
| 50 | #define _COMPONENT ACPI_NAMESPACE |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 51 | ACPI_MODULE_NAME("nsutils") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 53 | /* Local prototypes */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 54 | static u8 acpi_ns_valid_path_separator(char sep); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 55 | |
| 56 | #ifdef ACPI_OBSOLETE_FUNCTIONS |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 57 | acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node *node_to_search); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 58 | #endif |
| 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | /******************************************************************************* |
| 61 | * |
| 62 | * FUNCTION: acpi_ns_report_error |
| 63 | * |
| 64 | * PARAMETERS: module_name - Caller's module name (for error output) |
| 65 | * line_number - Caller's line number (for error output) |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 66 | * internal_name - Name or path of the namespace node |
| 67 | * lookup_status - Exception code from NS lookup |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | * |
| 69 | * RETURN: None |
| 70 | * |
| 71 | * DESCRIPTION: Print warning message with full pathname |
| 72 | * |
| 73 | ******************************************************************************/ |
| 74 | |
| 75 | void |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | acpi_ns_report_error(char *module_name, |
| 77 | u32 line_number, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 78 | char *internal_name, acpi_status lookup_status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 80 | acpi_status status; |
| 81 | char *name = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 83 | acpi_ut_report_error(module_name, line_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
| 85 | if (lookup_status == AE_BAD_CHARACTER) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame^] | 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | /* There is a non-ascii character in the name */ |
| 88 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 89 | acpi_os_printf("[0x%4.4X] (NON-ASCII)", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 90 | *(ACPI_CAST_PTR(u32, internal_name))); |
| 91 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | /* Convert path to external format */ |
| 93 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 94 | status = acpi_ns_externalize_name(ACPI_UINT32_MAX, |
| 95 | internal_name, NULL, &name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
| 97 | /* Print target name */ |
| 98 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 99 | if (ACPI_SUCCESS(status)) { |
| 100 | acpi_os_printf("[%s]", name); |
| 101 | } else { |
| 102 | acpi_os_printf("[COULD NOT EXTERNALIZE NAME]"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | if (name) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 106 | ACPI_MEM_FREE(name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
| 108 | } |
| 109 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 110 | acpi_os_printf(" Namespace lookup failure, %s\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 111 | acpi_format_exception(lookup_status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | } |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | /******************************************************************************* |
| 115 | * |
| 116 | * FUNCTION: acpi_ns_report_method_error |
| 117 | * |
| 118 | * PARAMETERS: module_name - Caller's module name (for error output) |
| 119 | * line_number - Caller's line number (for error output) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | * Message - Error message to use on failure |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 121 | * prefix_node - Prefix relative to the path |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 122 | * Path - Path to the node (optional) |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 123 | * method_status - Execution status |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | * |
| 125 | * RETURN: None |
| 126 | * |
| 127 | * DESCRIPTION: Print warning message with full pathname |
| 128 | * |
| 129 | ******************************************************************************/ |
| 130 | |
| 131 | void |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 132 | acpi_ns_report_method_error(char *module_name, |
| 133 | u32 line_number, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 134 | char *message, |
| 135 | struct acpi_namespace_node *prefix_node, |
| 136 | char *path, acpi_status method_status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 138 | acpi_status status; |
| 139 | struct acpi_namespace_node *node = prefix_node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 141 | acpi_ut_report_error(module_name, line_number); |
| 142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | if (path) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 144 | status = acpi_ns_get_node_by_path(path, prefix_node, |
| 145 | ACPI_NS_NO_UPSEARCH, &node); |
| 146 | if (ACPI_FAILURE(status)) { |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 147 | acpi_os_printf("[Could not get node by pathname]"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
| 149 | } |
| 150 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 151 | acpi_ns_print_node_pathname(node, message); |
| 152 | acpi_os_printf(", %s\n", acpi_format_exception(method_status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | } |
| 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | /******************************************************************************* |
| 156 | * |
| 157 | * FUNCTION: acpi_ns_print_node_pathname |
| 158 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 159 | * PARAMETERS: Node - Object |
| 160 | * Message - Prefix message |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | * |
| 162 | * DESCRIPTION: Print an object's full namespace pathname |
| 163 | * Manages allocation/freeing of a pathname buffer |
| 164 | * |
| 165 | ******************************************************************************/ |
| 166 | |
| 167 | void |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 168 | acpi_ns_print_node_pathname(struct acpi_namespace_node *node, char *message) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 170 | struct acpi_buffer buffer; |
| 171 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
| 173 | if (!node) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 174 | acpi_os_printf("[NULL NAME]"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | return; |
| 176 | } |
| 177 | |
| 178 | /* Convert handle to full pathname and print it (with supplied message) */ |
| 179 | |
| 180 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; |
| 181 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 182 | status = acpi_ns_handle_to_pathname(node, &buffer); |
| 183 | if (ACPI_SUCCESS(status)) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 184 | if (message) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 185 | acpi_os_printf("%s ", message); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
| 187 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 188 | acpi_os_printf("[%s] (Node %p)", (char *)buffer.pointer, node); |
| 189 | ACPI_MEM_FREE(buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } |
| 191 | } |
| 192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | /******************************************************************************* |
| 194 | * |
| 195 | * FUNCTION: acpi_ns_valid_root_prefix |
| 196 | * |
| 197 | * PARAMETERS: Prefix - Character to be checked |
| 198 | * |
| 199 | * RETURN: TRUE if a valid prefix |
| 200 | * |
| 201 | * DESCRIPTION: Check if a character is a valid ACPI Root prefix |
| 202 | * |
| 203 | ******************************************************************************/ |
| 204 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 205 | u8 acpi_ns_valid_root_prefix(char prefix) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | { |
| 207 | |
| 208 | return ((u8) (prefix == '\\')); |
| 209 | } |
| 210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | /******************************************************************************* |
| 212 | * |
| 213 | * FUNCTION: acpi_ns_valid_path_separator |
| 214 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 215 | * PARAMETERS: Sep - Character to be checked |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | * |
| 217 | * RETURN: TRUE if a valid path separator |
| 218 | * |
| 219 | * DESCRIPTION: Check if a character is a valid ACPI path separator |
| 220 | * |
| 221 | ******************************************************************************/ |
| 222 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 223 | static u8 acpi_ns_valid_path_separator(char sep) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | { |
| 225 | |
| 226 | return ((u8) (sep == '.')); |
| 227 | } |
| 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | /******************************************************************************* |
| 230 | * |
| 231 | * FUNCTION: acpi_ns_get_type |
| 232 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 233 | * PARAMETERS: Node - Parent Node to be examined |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | * |
| 235 | * RETURN: Type field from Node whose handle is passed |
| 236 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 237 | * DESCRIPTION: Return the type of a Namespace node |
| 238 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | ******************************************************************************/ |
| 240 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 241 | acpi_object_type acpi_ns_get_type(struct acpi_namespace_node * node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 243 | ACPI_FUNCTION_TRACE("ns_get_type"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
| 245 | if (!node) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 246 | ACPI_WARNING((AE_INFO, "Null Node parameter")); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 247 | return_UINT32(ACPI_TYPE_ANY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
| 249 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 250 | return_UINT32((acpi_object_type) node->type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | } |
| 252 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | /******************************************************************************* |
| 254 | * |
| 255 | * FUNCTION: acpi_ns_local |
| 256 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 257 | * PARAMETERS: Type - A namespace object type |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | * |
| 259 | * RETURN: LOCAL if names must be found locally in objects of the |
| 260 | * passed type, 0 if enclosing scopes should be searched |
| 261 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 262 | * DESCRIPTION: Returns scope rule for the given object type. |
| 263 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | ******************************************************************************/ |
| 265 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 266 | u32 acpi_ns_local(acpi_object_type type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 268 | ACPI_FUNCTION_TRACE("ns_local"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 270 | if (!acpi_ut_valid_object_type(type)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame^] | 271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | /* Type code out of range */ |
| 273 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 274 | ACPI_WARNING((AE_INFO, "Invalid Object Type %X", type)); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 275 | return_UINT32(ACPI_NS_NORMAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | } |
| 277 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 278 | return_UINT32((u32) acpi_gbl_ns_properties[type] & ACPI_NS_LOCAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
| 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | /******************************************************************************* |
| 282 | * |
| 283 | * FUNCTION: acpi_ns_get_internal_name_length |
| 284 | * |
| 285 | * PARAMETERS: Info - Info struct initialized with the |
| 286 | * external name pointer. |
| 287 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 288 | * RETURN: None |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | * |
| 290 | * DESCRIPTION: Calculate the length of the internal (AML) namestring |
| 291 | * corresponding to the external (ASL) namestring. |
| 292 | * |
| 293 | ******************************************************************************/ |
| 294 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 295 | void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 297 | char *next_external_char; |
| 298 | u32 i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 300 | ACPI_FUNCTION_ENTRY(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
| 302 | next_external_char = info->external_name; |
| 303 | info->num_carats = 0; |
| 304 | info->num_segments = 0; |
| 305 | info->fully_qualified = FALSE; |
| 306 | |
| 307 | /* |
| 308 | * For the internal name, the required length is 4 bytes per segment, plus |
| 309 | * 1 each for root_prefix, multi_name_prefix_op, segment count, trailing null |
| 310 | * (which is not really needed, but no there's harm in putting it there) |
| 311 | * |
| 312 | * strlen() + 1 covers the first name_seg, which has no path separator |
| 313 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 314 | if (acpi_ns_valid_root_prefix(next_external_char[0])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | info->fully_qualified = TRUE; |
| 316 | next_external_char++; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 317 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | /* |
| 319 | * Handle Carat prefixes |
| 320 | */ |
| 321 | while (*next_external_char == '^') { |
| 322 | info->num_carats++; |
| 323 | next_external_char++; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | /* |
| 328 | * Determine the number of ACPI name "segments" by counting the number of |
| 329 | * path separators within the string. Start with one segment since the |
| 330 | * segment count is [(# separators) + 1], and zero separators is ok. |
| 331 | */ |
| 332 | if (*next_external_char) { |
| 333 | info->num_segments = 1; |
| 334 | for (i = 0; next_external_char[i]; i++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 335 | if (acpi_ns_valid_path_separator(next_external_char[i])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | info->num_segments++; |
| 337 | } |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | info->length = (ACPI_NAME_SIZE * info->num_segments) + |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 342 | 4 + info->num_carats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
| 344 | info->next_external_char = next_external_char; |
| 345 | } |
| 346 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | /******************************************************************************* |
| 348 | * |
| 349 | * FUNCTION: acpi_ns_build_internal_name |
| 350 | * |
| 351 | * PARAMETERS: Info - Info struct fully initialized |
| 352 | * |
| 353 | * RETURN: Status |
| 354 | * |
| 355 | * DESCRIPTION: Construct the internal (AML) namestring |
| 356 | * corresponding to the external (ASL) namestring. |
| 357 | * |
| 358 | ******************************************************************************/ |
| 359 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 360 | acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 362 | u32 num_segments = info->num_segments; |
| 363 | char *internal_name = info->internal_name; |
| 364 | char *external_name = info->next_external_char; |
| 365 | char *result = NULL; |
| 366 | acpi_native_uint i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 368 | ACPI_FUNCTION_TRACE("ns_build_internal_name"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
| 370 | /* Setup the correct prefixes, counts, and pointers */ |
| 371 | |
| 372 | if (info->fully_qualified) { |
| 373 | internal_name[0] = '\\'; |
| 374 | |
| 375 | if (num_segments <= 1) { |
| 376 | result = &internal_name[1]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 377 | } else if (num_segments == 2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | internal_name[1] = AML_DUAL_NAME_PREFIX; |
| 379 | result = &internal_name[2]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 380 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | internal_name[1] = AML_MULTI_NAME_PREFIX_OP; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 382 | internal_name[2] = (char)num_segments; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | result = &internal_name[3]; |
| 384 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 385 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | /* |
| 387 | * Not fully qualified. |
| 388 | * Handle Carats first, then append the name segments |
| 389 | */ |
| 390 | i = 0; |
| 391 | if (info->num_carats) { |
| 392 | for (i = 0; i < info->num_carats; i++) { |
| 393 | internal_name[i] = '^'; |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | if (num_segments <= 1) { |
| 398 | result = &internal_name[i]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 399 | } else if (num_segments == 2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | internal_name[i] = AML_DUAL_NAME_PREFIX; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 401 | result = &internal_name[(acpi_native_uint) (i + 1)]; |
| 402 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | internal_name[i] = AML_MULTI_NAME_PREFIX_OP; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 404 | internal_name[(acpi_native_uint) (i + 1)] = |
| 405 | (char)num_segments; |
| 406 | result = &internal_name[(acpi_native_uint) (i + 2)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | } |
| 408 | } |
| 409 | |
| 410 | /* Build the name (minus path separators) */ |
| 411 | |
| 412 | for (; num_segments; num_segments--) { |
| 413 | for (i = 0; i < ACPI_NAME_SIZE; i++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 414 | if (acpi_ns_valid_path_separator(*external_name) || |
| 415 | (*external_name == 0)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame^] | 416 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | /* Pad the segment with underscore(s) if segment is short */ |
| 418 | |
| 419 | result[i] = '_'; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 420 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | /* Convert the character to uppercase and save it */ |
| 422 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 423 | result[i] = |
| 424 | (char)ACPI_TOUPPER((int)*external_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | external_name++; |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | /* Now we must have a path separator, or the pathname is bad */ |
| 430 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 431 | if (!acpi_ns_valid_path_separator(*external_name) && |
| 432 | (*external_name != 0)) { |
| 433 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | } |
| 435 | |
| 436 | /* Move on the next segment */ |
| 437 | |
| 438 | external_name++; |
| 439 | result += ACPI_NAME_SIZE; |
| 440 | } |
| 441 | |
| 442 | /* Terminate the string */ |
| 443 | |
| 444 | *result = 0; |
| 445 | |
| 446 | if (info->fully_qualified) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 447 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 448 | "Returning [%p] (abs) \"\\%s\"\n", |
| 449 | internal_name, internal_name)); |
| 450 | } else { |
| 451 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n", |
| 452 | internal_name, internal_name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | } |
| 454 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 455 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | } |
| 457 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | /******************************************************************************* |
| 459 | * |
| 460 | * FUNCTION: acpi_ns_internalize_name |
| 461 | * |
| 462 | * PARAMETERS: *external_name - External representation of name |
| 463 | * **Converted Name - Where to return the resulting |
| 464 | * internal represention of the name |
| 465 | * |
| 466 | * RETURN: Status |
| 467 | * |
| 468 | * DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0") |
| 469 | * to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) |
| 470 | * |
| 471 | *******************************************************************************/ |
| 472 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 473 | acpi_status acpi_ns_internalize_name(char *external_name, char **converted_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 475 | char *internal_name; |
| 476 | struct acpi_namestring_info info; |
| 477 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 479 | ACPI_FUNCTION_TRACE("ns_internalize_name"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 481 | if ((!external_name) || (*external_name == 0) || (!converted_name)) { |
| 482 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | /* Get the length of the new internal name */ |
| 486 | |
| 487 | info.external_name = external_name; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 488 | acpi_ns_get_internal_name_length(&info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | |
| 490 | /* We need a segment to store the internal name */ |
| 491 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 492 | internal_name = ACPI_MEM_CALLOCATE(info.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | if (!internal_name) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 494 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | /* Build the name */ |
| 498 | |
| 499 | info.internal_name = internal_name; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 500 | status = acpi_ns_build_internal_name(&info); |
| 501 | if (ACPI_FAILURE(status)) { |
| 502 | ACPI_MEM_FREE(internal_name); |
| 503 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | *converted_name = internal_name; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 507 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | } |
| 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | /******************************************************************************* |
| 511 | * |
| 512 | * FUNCTION: acpi_ns_externalize_name |
| 513 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 514 | * PARAMETERS: internal_name_length - Lenth of the internal name below |
| 515 | * internal_name - Internal representation of name |
| 516 | * converted_name_length - Where the length is returned |
| 517 | * converted_name - Where the resulting external name |
| 518 | * is returned |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | * |
| 520 | * RETURN: Status |
| 521 | * |
| 522 | * DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30) |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 523 | * to its external (printable) form (e.g. "\_PR_.CPU0") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | * |
| 525 | ******************************************************************************/ |
| 526 | |
| 527 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 528 | acpi_ns_externalize_name(u32 internal_name_length, |
| 529 | char *internal_name, |
| 530 | u32 * converted_name_length, char **converted_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 532 | acpi_native_uint names_index = 0; |
| 533 | acpi_native_uint num_segments = 0; |
| 534 | acpi_native_uint required_length; |
| 535 | acpi_native_uint prefix_length = 0; |
| 536 | acpi_native_uint i = 0; |
| 537 | acpi_native_uint j = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 539 | ACPI_FUNCTION_TRACE("ns_externalize_name"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 541 | if (!internal_name_length || !internal_name || !converted_name) { |
| 542 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | /* |
| 546 | * Check for a prefix (one '\' | one or more '^'). |
| 547 | */ |
| 548 | switch (internal_name[0]) { |
| 549 | case '\\': |
| 550 | prefix_length = 1; |
| 551 | break; |
| 552 | |
| 553 | case '^': |
| 554 | for (i = 0; i < internal_name_length; i++) { |
| 555 | if (internal_name[i] == '^') { |
| 556 | prefix_length = i + 1; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 557 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | break; |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | if (i == internal_name_length) { |
| 563 | prefix_length = i; |
| 564 | } |
| 565 | |
| 566 | break; |
| 567 | |
| 568 | default: |
| 569 | break; |
| 570 | } |
| 571 | |
| 572 | /* |
| 573 | * Check for object names. Note that there could be 0-255 of these |
| 574 | * 4-byte elements. |
| 575 | */ |
| 576 | if (prefix_length < internal_name_length) { |
| 577 | switch (internal_name[prefix_length]) { |
| 578 | case AML_MULTI_NAME_PREFIX_OP: |
| 579 | |
| 580 | /* <count> 4-byte names */ |
| 581 | |
| 582 | names_index = prefix_length + 2; |
| 583 | num_segments = (acpi_native_uint) (u8) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 584 | internal_name[(acpi_native_uint) |
| 585 | (prefix_length + 1)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | break; |
| 587 | |
| 588 | case AML_DUAL_NAME_PREFIX: |
| 589 | |
| 590 | /* Two 4-byte names */ |
| 591 | |
| 592 | names_index = prefix_length + 1; |
| 593 | num_segments = 2; |
| 594 | break; |
| 595 | |
| 596 | case 0: |
| 597 | |
| 598 | /* null_name */ |
| 599 | |
| 600 | names_index = 0; |
| 601 | num_segments = 0; |
| 602 | break; |
| 603 | |
| 604 | default: |
| 605 | |
| 606 | /* one 4-byte name */ |
| 607 | |
| 608 | names_index = prefix_length; |
| 609 | num_segments = 1; |
| 610 | break; |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | /* |
| 615 | * Calculate the length of converted_name, which equals the length |
| 616 | * of the prefix, length of all object names, length of any required |
| 617 | * punctuation ('.') between object names, plus the NULL terminator. |
| 618 | */ |
| 619 | required_length = prefix_length + (4 * num_segments) + |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 620 | ((num_segments > 0) ? (num_segments - 1) : 0) + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
| 622 | /* |
| 623 | * Check to see if we're still in bounds. If not, there's a problem |
| 624 | * with internal_name (invalid format). |
| 625 | */ |
| 626 | if (required_length > internal_name_length) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 627 | ACPI_ERROR((AE_INFO, "Invalid internal name")); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 628 | return_ACPI_STATUS(AE_BAD_PATHNAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | /* |
| 632 | * Build converted_name |
| 633 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 634 | *converted_name = ACPI_MEM_CALLOCATE(required_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | if (!(*converted_name)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 636 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | j = 0; |
| 640 | |
| 641 | for (i = 0; i < prefix_length; i++) { |
| 642 | (*converted_name)[j++] = internal_name[i]; |
| 643 | } |
| 644 | |
| 645 | if (num_segments > 0) { |
| 646 | for (i = 0; i < num_segments; i++) { |
| 647 | if (i > 0) { |
| 648 | (*converted_name)[j++] = '.'; |
| 649 | } |
| 650 | |
| 651 | (*converted_name)[j++] = internal_name[names_index++]; |
| 652 | (*converted_name)[j++] = internal_name[names_index++]; |
| 653 | (*converted_name)[j++] = internal_name[names_index++]; |
| 654 | (*converted_name)[j++] = internal_name[names_index++]; |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | if (converted_name_length) { |
| 659 | *converted_name_length = (u32) required_length; |
| 660 | } |
| 661 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 662 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | } |
| 664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | /******************************************************************************* |
| 666 | * |
| 667 | * FUNCTION: acpi_ns_map_handle_to_node |
| 668 | * |
| 669 | * PARAMETERS: Handle - Handle to be converted to an Node |
| 670 | * |
| 671 | * RETURN: A Name table entry pointer |
| 672 | * |
| 673 | * DESCRIPTION: Convert a namespace handle to a real Node |
| 674 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 675 | * Note: Real integer handles would allow for more verification |
| 676 | * and keep all pointers within this subsystem - however this introduces |
| 677 | * more (and perhaps unnecessary) overhead. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | * |
| 679 | ******************************************************************************/ |
| 680 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 681 | struct acpi_namespace_node *acpi_ns_map_handle_to_node(acpi_handle handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | { |
| 683 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 684 | ACPI_FUNCTION_ENTRY(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | |
| 686 | /* |
| 687 | * Simple implementation. |
| 688 | */ |
| 689 | if (!handle) { |
| 690 | return (NULL); |
| 691 | } |
| 692 | |
| 693 | if (handle == ACPI_ROOT_OBJECT) { |
| 694 | return (acpi_gbl_root_node); |
| 695 | } |
| 696 | |
| 697 | /* We can at least attempt to verify the handle */ |
| 698 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 699 | if (ACPI_GET_DESCRIPTOR_TYPE(handle) != ACPI_DESC_TYPE_NAMED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | return (NULL); |
| 701 | } |
| 702 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 703 | return ((struct acpi_namespace_node *)handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | } |
| 705 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | /******************************************************************************* |
| 707 | * |
| 708 | * FUNCTION: acpi_ns_convert_entry_to_handle |
| 709 | * |
| 710 | * PARAMETERS: Node - Node to be converted to a Handle |
| 711 | * |
| 712 | * RETURN: A user handle |
| 713 | * |
| 714 | * DESCRIPTION: Convert a real Node to a namespace handle |
| 715 | * |
| 716 | ******************************************************************************/ |
| 717 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 718 | acpi_handle acpi_ns_convert_entry_to_handle(struct acpi_namespace_node *node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | { |
| 720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | /* |
| 722 | * Simple implementation for now; |
| 723 | */ |
| 724 | return ((acpi_handle) node); |
| 725 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 726 | /* Example future implementation --------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | |
| 728 | if (!Node) |
| 729 | { |
| 730 | return (NULL); |
| 731 | } |
| 732 | |
| 733 | if (Node == acpi_gbl_root_node) |
| 734 | { |
| 735 | return (ACPI_ROOT_OBJECT); |
| 736 | } |
| 737 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | return ((acpi_handle) Node); |
| 739 | ------------------------------------------------------*/ |
| 740 | } |
| 741 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | /******************************************************************************* |
| 743 | * |
| 744 | * FUNCTION: acpi_ns_terminate |
| 745 | * |
| 746 | * PARAMETERS: none |
| 747 | * |
| 748 | * RETURN: none |
| 749 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 750 | * DESCRIPTION: free memory allocated for namespace and ACPI table storage. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | * |
| 752 | ******************************************************************************/ |
| 753 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 754 | void acpi_ns_terminate(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 756 | union acpi_operand_object *obj_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 758 | ACPI_FUNCTION_TRACE("ns_terminate"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
| 760 | /* |
| 761 | * 1) Free the entire namespace -- all nodes and objects |
| 762 | * |
| 763 | * Delete all object descriptors attached to namepsace nodes |
| 764 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 765 | acpi_ns_delete_namespace_subtree(acpi_gbl_root_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | |
| 767 | /* Detach any objects attached to the root */ |
| 768 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 769 | obj_desc = acpi_ns_get_attached_object(acpi_gbl_root_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | if (obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 771 | acpi_ns_detach_object(acpi_gbl_root_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | } |
| 773 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 774 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace freed\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
| 776 | /* |
| 777 | * 2) Now we can delete the ACPI tables |
| 778 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 779 | acpi_tb_delete_all_tables(); |
| 780 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | |
| 782 | return_VOID; |
| 783 | } |
| 784 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | /******************************************************************************* |
| 786 | * |
| 787 | * FUNCTION: acpi_ns_opens_scope |
| 788 | * |
| 789 | * PARAMETERS: Type - A valid namespace type |
| 790 | * |
| 791 | * RETURN: NEWSCOPE if the passed type "opens a name scope" according |
| 792 | * to the ACPI specification, else 0 |
| 793 | * |
| 794 | ******************************************************************************/ |
| 795 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 796 | u32 acpi_ns_opens_scope(acpi_object_type type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 798 | ACPI_FUNCTION_TRACE_STR("ns_opens_scope", acpi_ut_get_type_name(type)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 800 | if (!acpi_ut_valid_object_type(type)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame^] | 801 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | /* type code out of range */ |
| 803 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 804 | ACPI_WARNING((AE_INFO, "Invalid Object Type %X", type)); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 805 | return_UINT32(ACPI_NS_NORMAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | } |
| 807 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 808 | return_UINT32(((u32) acpi_gbl_ns_properties[type]) & ACPI_NS_NEWSCOPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | } |
| 810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | /******************************************************************************* |
| 812 | * |
| 813 | * FUNCTION: acpi_ns_get_node_by_path |
| 814 | * |
| 815 | * PARAMETERS: *Pathname - Name to be found, in external (ASL) format. The |
| 816 | * \ (backslash) and ^ (carat) prefixes, and the |
| 817 | * . (period) to separate segments are supported. |
| 818 | * start_node - Root of subtree to be searched, or NS_ALL for the |
| 819 | * root of the name space. If Name is fully |
| 820 | * qualified (first s8 is '\'), the passed value |
| 821 | * of Scope will not be accessed. |
| 822 | * Flags - Used to indicate whether to perform upsearch or |
| 823 | * not. |
| 824 | * return_node - Where the Node is returned |
| 825 | * |
| 826 | * DESCRIPTION: Look up a name relative to a given scope and return the |
| 827 | * corresponding Node. NOTE: Scope can be null. |
| 828 | * |
| 829 | * MUTEX: Locks namespace |
| 830 | * |
| 831 | ******************************************************************************/ |
| 832 | |
| 833 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 834 | acpi_ns_get_node_by_path(char *pathname, |
| 835 | struct acpi_namespace_node *start_node, |
| 836 | u32 flags, struct acpi_namespace_node **return_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 838 | union acpi_generic_state scope_info; |
| 839 | acpi_status status; |
| 840 | char *internal_path = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 842 | ACPI_FUNCTION_TRACE_PTR("ns_get_node_by_path", pathname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
| 844 | if (pathname) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame^] | 845 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | /* Convert path to internal representation */ |
| 847 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 848 | status = acpi_ns_internalize_name(pathname, &internal_path); |
| 849 | if (ACPI_FAILURE(status)) { |
| 850 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | } |
| 852 | } |
| 853 | |
| 854 | /* Must lock namespace during lookup */ |
| 855 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 856 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); |
| 857 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | goto cleanup; |
| 859 | } |
| 860 | |
| 861 | /* Setup lookup scope (search starting point) */ |
| 862 | |
| 863 | scope_info.scope.node = start_node; |
| 864 | |
| 865 | /* Lookup the name in the namespace */ |
| 866 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 867 | status = acpi_ns_lookup(&scope_info, internal_path, |
| 868 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, |
| 869 | (flags | ACPI_NS_DONT_OPEN_SCOPE), |
| 870 | NULL, return_node); |
| 871 | if (ACPI_FAILURE(status)) { |
| 872 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s, %s\n", |
| 873 | internal_path, |
| 874 | acpi_format_exception(status))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | } |
| 876 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 877 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 879 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | if (internal_path) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 881 | ACPI_MEM_FREE(internal_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 883 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | } |
| 885 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | /******************************************************************************* |
| 887 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 888 | * FUNCTION: acpi_ns_get_parent_node |
| 889 | * |
| 890 | * PARAMETERS: Node - Current table entry |
| 891 | * |
| 892 | * RETURN: Parent entry of the given entry |
| 893 | * |
| 894 | * DESCRIPTION: Obtain the parent entry for a given entry in the namespace. |
| 895 | * |
| 896 | ******************************************************************************/ |
| 897 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 898 | struct acpi_namespace_node *acpi_ns_get_parent_node(struct acpi_namespace_node |
| 899 | *node) |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 900 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 901 | ACPI_FUNCTION_ENTRY(); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 902 | |
| 903 | if (!node) { |
| 904 | return (NULL); |
| 905 | } |
| 906 | |
| 907 | /* |
| 908 | * Walk to the end of this peer list. The last entry is marked with a flag |
| 909 | * and the peer pointer is really a pointer back to the parent. This saves |
| 910 | * putting a parent back pointer in each and every named object! |
| 911 | */ |
| 912 | while (!(node->flags & ANOBJ_END_OF_PEER_LIST)) { |
| 913 | node = node->peer; |
| 914 | } |
| 915 | |
| 916 | return (node->peer); |
| 917 | } |
| 918 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 919 | /******************************************************************************* |
| 920 | * |
| 921 | * FUNCTION: acpi_ns_get_next_valid_node |
| 922 | * |
| 923 | * PARAMETERS: Node - Current table entry |
| 924 | * |
| 925 | * RETURN: Next valid Node in the linked node list. NULL if no more valid |
| 926 | * nodes. |
| 927 | * |
| 928 | * DESCRIPTION: Find the next valid node within a name table. |
| 929 | * Useful for implementing NULL-end-of-list loops. |
| 930 | * |
| 931 | ******************************************************************************/ |
| 932 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 933 | struct acpi_namespace_node *acpi_ns_get_next_valid_node(struct |
| 934 | acpi_namespace_node |
| 935 | *node) |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 936 | { |
| 937 | |
| 938 | /* If we are at the end of this peer list, return NULL */ |
| 939 | |
| 940 | if (node->flags & ANOBJ_END_OF_PEER_LIST) { |
| 941 | return NULL; |
| 942 | } |
| 943 | |
| 944 | /* Otherwise just return the next peer */ |
| 945 | |
| 946 | return (node->peer); |
| 947 | } |
| 948 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 949 | #ifdef ACPI_OBSOLETE_FUNCTIONS |
| 950 | /******************************************************************************* |
| 951 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | * FUNCTION: acpi_ns_find_parent_name |
| 953 | * |
| 954 | * PARAMETERS: *child_node - Named Obj whose name is to be found |
| 955 | * |
| 956 | * RETURN: The ACPI name |
| 957 | * |
| 958 | * DESCRIPTION: Search for the given obj in its parent scope and return the |
| 959 | * name segment, or "????" if the parent name can't be found |
| 960 | * (which "should not happen"). |
| 961 | * |
| 962 | ******************************************************************************/ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 963 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 964 | acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node * child_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 966 | struct acpi_namespace_node *parent_node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 968 | ACPI_FUNCTION_TRACE("ns_find_parent_name"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | |
| 970 | if (child_node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame^] | 971 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | /* Valid entry. Get the parent Node */ |
| 973 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 974 | parent_node = acpi_ns_get_parent_node(child_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | if (parent_node) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 976 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 977 | "Parent of %p [%4.4s] is %p [%4.4s]\n", |
| 978 | child_node, |
| 979 | acpi_ut_get_node_name(child_node), |
| 980 | parent_node, |
| 981 | acpi_ut_get_node_name(parent_node))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | |
| 983 | if (parent_node->name.integer) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 984 | return_VALUE((acpi_name) parent_node->name. |
| 985 | integer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | } |
| 987 | } |
| 988 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 989 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 990 | "Unable to find parent of %p (%4.4s)\n", |
| 991 | child_node, |
| 992 | acpi_ut_get_node_name(child_node))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | } |
| 994 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 995 | return_VALUE(ACPI_UNKNOWN_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | } |
| 997 | #endif |