Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: psxface - Parser external interfaces |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <acpi/acpi.h> |
| 45 | #include <acpi/acparser.h> |
| 46 | #include <acpi/acdispat.h> |
| 47 | #include <acpi/acinterp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #define _COMPONENT ACPI_PARSER |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 50 | ACPI_MODULE_NAME("psxface") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 52 | /* Local Prototypes */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 53 | static void acpi_ps_start_trace(struct acpi_parameter_info *info); |
| 54 | |
| 55 | static void acpi_ps_stop_trace(struct acpi_parameter_info *info); |
| 56 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 57 | static acpi_status acpi_ps_execute_pass(struct acpi_parameter_info *info); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 58 | |
| 59 | static void |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 60 | acpi_ps_update_parameter_list(struct acpi_parameter_info *info, u16 action); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
| 62 | /******************************************************************************* |
| 63 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 64 | * FUNCTION: acpi_debug_trace |
| 65 | * |
| 66 | * PARAMETERS: method_name - Valid ACPI name string |
| 67 | * debug_level - Optional level mask. 0 to use default |
| 68 | * debug_layer - Optional layer mask. 0 to use default |
| 69 | * Flags - bit 1: one shot(1) or persistent(0) |
| 70 | * |
| 71 | * RETURN: Status |
| 72 | * |
| 73 | * DESCRIPTION: External interface to enable debug tracing during control |
| 74 | * method execution |
| 75 | * |
| 76 | ******************************************************************************/ |
| 77 | |
| 78 | acpi_status |
| 79 | acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags) |
| 80 | { |
| 81 | acpi_status status; |
| 82 | |
| 83 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); |
| 84 | if (ACPI_FAILURE(status)) { |
| 85 | return (status); |
| 86 | } |
| 87 | |
| 88 | /* TBDs: Validate name, allow full path or just nameseg */ |
| 89 | |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 90 | acpi_gbl_trace_method_name = *ACPI_CAST_PTR(u32, name); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 91 | acpi_gbl_trace_flags = flags; |
| 92 | |
| 93 | if (debug_level) { |
| 94 | acpi_gbl_trace_dbg_level = debug_level; |
| 95 | } |
| 96 | if (debug_layer) { |
| 97 | acpi_gbl_trace_dbg_layer = debug_layer; |
| 98 | } |
| 99 | |
| 100 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
| 101 | return (AE_OK); |
| 102 | } |
| 103 | |
| 104 | /******************************************************************************* |
| 105 | * |
| 106 | * FUNCTION: acpi_ps_start_trace |
| 107 | * |
| 108 | * PARAMETERS: Info - Method info struct |
| 109 | * |
| 110 | * RETURN: None |
| 111 | * |
| 112 | * DESCRIPTION: Start control method execution trace |
| 113 | * |
| 114 | ******************************************************************************/ |
| 115 | |
| 116 | static void acpi_ps_start_trace(struct acpi_parameter_info *info) |
| 117 | { |
| 118 | acpi_status status; |
| 119 | |
| 120 | ACPI_FUNCTION_ENTRY(); |
| 121 | |
| 122 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); |
| 123 | if (ACPI_FAILURE(status)) { |
| 124 | return; |
| 125 | } |
| 126 | |
| 127 | if ((!acpi_gbl_trace_method_name) || |
| 128 | (acpi_gbl_trace_method_name != info->node->name.integer)) { |
| 129 | goto exit; |
| 130 | } |
| 131 | |
| 132 | acpi_gbl_original_dbg_level = acpi_dbg_level; |
| 133 | acpi_gbl_original_dbg_layer = acpi_dbg_layer; |
| 134 | |
| 135 | acpi_dbg_level = 0x00FFFFFF; |
| 136 | acpi_dbg_layer = ACPI_UINT32_MAX; |
| 137 | |
| 138 | if (acpi_gbl_trace_dbg_level) { |
| 139 | acpi_dbg_level = acpi_gbl_trace_dbg_level; |
| 140 | } |
| 141 | if (acpi_gbl_trace_dbg_layer) { |
| 142 | acpi_dbg_layer = acpi_gbl_trace_dbg_layer; |
| 143 | } |
| 144 | |
| 145 | exit: |
| 146 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
| 147 | } |
| 148 | |
| 149 | /******************************************************************************* |
| 150 | * |
| 151 | * FUNCTION: acpi_ps_stop_trace |
| 152 | * |
| 153 | * PARAMETERS: Info - Method info struct |
| 154 | * |
| 155 | * RETURN: None |
| 156 | * |
| 157 | * DESCRIPTION: Stop control method execution trace |
| 158 | * |
| 159 | ******************************************************************************/ |
| 160 | |
| 161 | static void acpi_ps_stop_trace(struct acpi_parameter_info *info) |
| 162 | { |
| 163 | acpi_status status; |
| 164 | |
| 165 | ACPI_FUNCTION_ENTRY(); |
| 166 | |
| 167 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); |
| 168 | if (ACPI_FAILURE(status)) { |
| 169 | return; |
| 170 | } |
| 171 | |
| 172 | if ((!acpi_gbl_trace_method_name) || |
| 173 | (acpi_gbl_trace_method_name != info->node->name.integer)) { |
| 174 | goto exit; |
| 175 | } |
| 176 | |
| 177 | /* Disable further tracing if type is one-shot */ |
| 178 | |
| 179 | if (acpi_gbl_trace_flags & 1) { |
| 180 | acpi_gbl_trace_method_name = 0; |
| 181 | acpi_gbl_trace_dbg_level = 0; |
| 182 | acpi_gbl_trace_dbg_layer = 0; |
| 183 | } |
| 184 | |
| 185 | acpi_dbg_level = acpi_gbl_original_dbg_level; |
| 186 | acpi_dbg_layer = acpi_gbl_original_dbg_layer; |
| 187 | |
| 188 | exit: |
| 189 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
| 190 | } |
| 191 | |
| 192 | /******************************************************************************* |
| 193 | * |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 194 | * FUNCTION: acpi_ps_execute_method |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 196 | * PARAMETERS: Info - Method info block, contains: |
| 197 | * Node - Method Node to execute |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 198 | * obj_desc - Method object |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 199 | * Parameters - List of parameters to pass to the method, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | * terminated by NULL. Params itself may be |
| 201 | * NULL if no parameters are being passed. |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 202 | * return_object - Where to put method's return value (if |
| 203 | * any). If NULL, no value is returned. |
| 204 | * parameter_type - Type of Parameter list |
| 205 | * return_object - Where to put method's return value (if |
| 206 | * any). If NULL, no value is returned. |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 207 | * pass_number - Parse or execute pass |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | * |
| 209 | * RETURN: Status |
| 210 | * |
| 211 | * DESCRIPTION: Execute a control method |
| 212 | * |
| 213 | ******************************************************************************/ |
| 214 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 215 | acpi_status acpi_ps_execute_method(struct acpi_parameter_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 217 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 219 | ACPI_FUNCTION_TRACE("ps_execute_method"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 221 | /* Validate the Info and method Node */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
| 223 | if (!info || !info->node) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 224 | return_ACPI_STATUS(AE_NULL_ENTRY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | /* Init for new method, wait on concurrency semaphore */ |
| 228 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 229 | status = |
| 230 | acpi_ds_begin_method_execution(info->node, info->obj_desc, NULL); |
| 231 | if (ACPI_FAILURE(status)) { |
| 232 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
| 234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | /* |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 236 | * The caller "owns" the parameters, so give each one an extra |
| 237 | * reference |
| 238 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 239 | acpi_ps_update_parameter_list(info, REF_INCREMENT); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 240 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 241 | /* Begin tracing if requested */ |
| 242 | |
| 243 | acpi_ps_start_trace(info); |
| 244 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 245 | /* |
| 246 | * 1) Perform the first pass parse of the method to enter any |
| 247 | * named objects that it creates into the namespace |
| 248 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 249 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
| 250 | "**** Begin Method Parse **** Entry=%p obj=%p\n", |
| 251 | info->node, info->obj_desc)); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 252 | |
| 253 | info->pass_number = 1; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 254 | status = acpi_ps_execute_pass(info); |
| 255 | if (ACPI_FAILURE(status)) { |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 256 | goto cleanup; |
| 257 | } |
| 258 | |
| 259 | /* |
| 260 | * 2) Execute the method. Performs second pass parse simultaneously |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 262 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
| 263 | "**** Begin Method Execution **** Entry=%p obj=%p\n", |
| 264 | info->node, info->obj_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 266 | info->pass_number = 3; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 267 | status = acpi_ps_execute_pass(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 269 | cleanup: |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 270 | /* End optional tracing */ |
| 271 | |
| 272 | acpi_ps_stop_trace(info); |
| 273 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 274 | /* Take away the extra reference that we gave the parameters above */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 276 | acpi_ps_update_parameter_list(info, REF_DECREMENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 278 | /* Exit now if error above */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 280 | if (ACPI_FAILURE(status)) { |
| 281 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | /* |
| 285 | * If the method has returned an object, signal this to the caller with |
| 286 | * a control exception code |
| 287 | */ |
| 288 | if (info->return_object) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 289 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
| 290 | "Method returned obj_desc=%p\n", |
| 291 | info->return_object)); |
| 292 | ACPI_DUMP_STACK_ENTRY(info->return_object); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
| 294 | status = AE_CTRL_RETURN_VALUE; |
| 295 | } |
| 296 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 297 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | } |
| 299 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 300 | /******************************************************************************* |
| 301 | * |
| 302 | * FUNCTION: acpi_ps_update_parameter_list |
| 303 | * |
| 304 | * PARAMETERS: Info - See struct acpi_parameter_info |
| 305 | * (Used: parameter_type and Parameters) |
| 306 | * Action - Add or Remove reference |
| 307 | * |
| 308 | * RETURN: Status |
| 309 | * |
| 310 | * DESCRIPTION: Update reference count on all method parameter objects |
| 311 | * |
| 312 | ******************************************************************************/ |
| 313 | |
| 314 | static void |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 315 | acpi_ps_update_parameter_list(struct acpi_parameter_info *info, u16 action) |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 316 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 317 | acpi_native_uint i; |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 318 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 319 | if ((info->parameter_type == ACPI_PARAM_ARGS) && (info->parameters)) { |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 320 | /* Update reference count for each parameter */ |
| 321 | |
| 322 | for (i = 0; info->parameters[i]; i++) { |
| 323 | /* Ignore errors, just do them all */ |
| 324 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 325 | (void)acpi_ut_update_object_reference(info-> |
| 326 | parameters[i], |
| 327 | action); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 328 | } |
| 329 | } |
| 330 | } |
| 331 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 332 | /******************************************************************************* |
| 333 | * |
| 334 | * FUNCTION: acpi_ps_execute_pass |
| 335 | * |
| 336 | * PARAMETERS: Info - See struct acpi_parameter_info |
| 337 | * (Used: pass_number, Node, and obj_desc) |
| 338 | * |
| 339 | * RETURN: Status |
| 340 | * |
| 341 | * DESCRIPTION: Single AML pass: Parse or Execute a control method |
| 342 | * |
| 343 | ******************************************************************************/ |
| 344 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 345 | static acpi_status acpi_ps_execute_pass(struct acpi_parameter_info *info) |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 346 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 347 | acpi_status status; |
| 348 | union acpi_parse_object *op; |
| 349 | struct acpi_walk_state *walk_state; |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 350 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 351 | ACPI_FUNCTION_TRACE("ps_execute_pass"); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 352 | |
| 353 | /* Create and init a Root Node */ |
| 354 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 355 | op = acpi_ps_create_scope_op(); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 356 | if (!op) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 357 | return_ACPI_STATUS(AE_NO_MEMORY); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | /* Create and initialize a new walk state */ |
| 361 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 362 | walk_state = |
| 363 | acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL, |
| 364 | NULL, NULL); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 365 | if (!walk_state) { |
| 366 | status = AE_NO_MEMORY; |
| 367 | goto cleanup; |
| 368 | } |
| 369 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 370 | status = acpi_ds_init_aml_walk(walk_state, op, info->node, |
| 371 | info->obj_desc->method.aml_start, |
| 372 | info->obj_desc->method.aml_length, |
| 373 | info->pass_number == 1 ? NULL : info, |
| 374 | info->pass_number); |
| 375 | if (ACPI_FAILURE(status)) { |
| 376 | acpi_ds_delete_walk_state(walk_state); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 377 | goto cleanup; |
| 378 | } |
| 379 | |
| 380 | /* Parse the AML */ |
| 381 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 382 | status = acpi_ps_parse_aml(walk_state); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 383 | |
| 384 | /* Walk state was deleted by parse_aml */ |
| 385 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 386 | cleanup: |
| 387 | acpi_ps_delete_parse_tree(op); |
| 388 | return_ACPI_STATUS(status); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 389 | } |