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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 | /****************************************************************************** * * Module Name: psxface - Parser external interfaces * *****************************************************************************/ /* * Copyright (C) 2000 - 2008, 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 <acpi/acparser.h> #include <acpi/acdispat.h> #include <acpi/acinterp.h> #define _COMPONENT ACPI_PARSER ACPI_MODULE_NAME("psxface") /* Local Prototypes */ static void acpi_ps_start_trace(struct acpi_evaluate_info *info); static void acpi_ps_stop_trace(struct acpi_evaluate_info *info); static void acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action); /******************************************************************************* * * FUNCTION: acpi_debug_trace * * PARAMETERS: method_name - Valid ACPI name string * debug_level - Optional level mask. 0 to use default * debug_layer - Optional layer mask. 0 to use default * Flags - bit 1: one shot(1) or persistent(0) * * RETURN: Status * * DESCRIPTION: External interface to enable debug tracing during control * method execution * ******************************************************************************/ acpi_status acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags) { acpi_status status; status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { return (status); } /* TBDs: Validate name, allow full path or just nameseg */ acpi_gbl_trace_method_name = *ACPI_CAST_PTR(u32, name); acpi_gbl_trace_flags = flags; if (debug_level) { acpi_gbl_trace_dbg_level = debug_level; } if (debug_layer) { acpi_gbl_trace_dbg_layer = debug_layer; } (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return (AE_OK); } /******************************************************************************* * * FUNCTION: acpi_ps_start_trace * * PARAMETERS: Info - Method info struct * * RETURN: None * * DESCRIPTION: Start control method execution trace * ******************************************************************************/ static void acpi_ps_start_trace(struct acpi_evaluate_info *info) { acpi_status status; ACPI_FUNCTION_ENTRY(); status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { return; } if ((!acpi_gbl_trace_method_name) || (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) { goto exit; } acpi_gbl_original_dbg_level = acpi_dbg_level; acpi_gbl_original_dbg_layer = acpi_dbg_layer; acpi_dbg_level = 0x00FFFFFF; acpi_dbg_layer = ACPI_UINT32_MAX; if (acpi_gbl_trace_dbg_level) { acpi_dbg_level = acpi_gbl_trace_dbg_level; } if (acpi_gbl_trace_dbg_layer) { acpi_dbg_layer = acpi_gbl_trace_dbg_layer; } exit: (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); } /******************************************************************************* * * FUNCTION: acpi_ps_stop_trace * * PARAMETERS: Info - Method info struct * * RETURN: None * * DESCRIPTION: Stop control method execution trace * ******************************************************************************/ static void acpi_ps_stop_trace(struct acpi_evaluate_info *info) { acpi_status status; ACPI_FUNCTION_ENTRY(); status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { return; } if ((!acpi_gbl_trace_method_name) || (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) { goto exit; } /* Disable further tracing if type is one-shot */ if (acpi_gbl_trace_flags & 1) { acpi_gbl_trace_method_name = 0; acpi_gbl_trace_dbg_level = 0; acpi_gbl_trace_dbg_layer = 0; } acpi_dbg_level = acpi_gbl_original_dbg_level; acpi_dbg_layer = acpi_gbl_original_dbg_layer; exit: (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); } /******************************************************************************* * * FUNCTION: acpi_ps_execute_method * * PARAMETERS: Info - Method info block, contains: * Node - Method Node to execute * obj_desc - Method object * Parameters - List of parameters to pass to the method, * terminated by NULL. Params itself may be * NULL if no parameters are being passed. * return_object - Where to put method's return value (if * any). If NULL, no value is returned. * parameter_type - Type of Parameter list * return_object - Where to put method's return value (if * any). If NULL, no value is returned. * pass_number - Parse or execute pass * * RETURN: Status * * DESCRIPTION: Execute a control method * ******************************************************************************/ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info) { acpi_status status; union acpi_parse_object *op; struct acpi_walk_state *walk_state; ACPI_FUNCTION_TRACE(ps_execute_method); /* Validate the Info and method Node */ if (!info || !info->resolved_node) { return_ACPI_STATUS(AE_NULL_ENTRY); } /* Init for new method, wait on concurrency semaphore */ status = acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc, NULL); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* * The caller "owns" the parameters, so give each one an extra reference */ acpi_ps_update_parameter_list(info, REF_INCREMENT); /* Begin tracing if requested */ acpi_ps_start_trace(info); /* * Execute the method. Performs parse simultaneously */ ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n", info->resolved_node->name.ascii, info->resolved_node, info->obj_desc)); /* Create and init a Root Node */ op = acpi_ps_create_scope_op(); if (!op) { status = AE_NO_MEMORY; goto cleanup; } /* Create and initialize a new walk state */ info->pass_number = ACPI_IMODE_EXECUTE; walk_state = acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL, NULL, NULL); if (!walk_state) { status = AE_NO_MEMORY; goto cleanup; } status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node, info->obj_desc->method.aml_start, info->obj_desc->method.aml_length, info, info->pass_number); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } /* Parse the AML */ status = acpi_ps_parse_aml(walk_state); /* walk_state was deleted by parse_aml */ cleanup: acpi_ps_delete_parse_tree(op); /* End optional tracing */ acpi_ps_stop_trace(info); /* Take away the extra reference that we gave the parameters above */ acpi_ps_update_parameter_list(info, REF_DECREMENT); /* Exit now if error above */ if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* * If the method has returned an object, signal this to the caller with * a control exception code */ if (info->return_object) { ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n", info->return_object)); ACPI_DUMP_STACK_ENTRY(info->return_object); status = AE_CTRL_RETURN_VALUE; } return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ps_update_parameter_list * * PARAMETERS: Info - See struct acpi_evaluate_info * (Used: parameter_type and Parameters) * Action - Add or Remove reference * * RETURN: Status * * DESCRIPTION: Update reference count on all method parameter objects * ******************************************************************************/ static void acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action) { acpi_native_uint i; if ((info->parameter_type == ACPI_PARAM_ARGS) && (info->parameters)) { /* Update reference count for each parameter */ for (i = 0; info->parameters[i]; i++) { /* Ignore errors, just do them all */ (void)acpi_ut_update_object_reference(info-> parameters[i], action); } } } |