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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswload - Dispatcher namespace load callbacks | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, 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 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/acparser.h> | |
46 | #include <acpi/amlcode.h> | |
47 | #include <acpi/acdispat.h> | |
48 | #include <acpi/acinterp.h> | |
49 | #include <acpi/acnamesp.h> | |
50 | #include <acpi/acevents.h> | |
51 | ||
73459f73 | 52 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
53 | #include <acpi/acdisasm.h> |
54 | #endif | |
55 | ||
56 | #define _COMPONENT ACPI_DISPATCHER | |
4be44fcd | 57 | ACPI_MODULE_NAME("dswload") |
1da177e4 LT |
58 | |
59 | /******************************************************************************* | |
60 | * | |
61 | * FUNCTION: acpi_ds_init_callbacks | |
62 | * | |
63 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
64 | * pass_number - 1, 2, or 3 | |
65 | * | |
66 | * RETURN: Status | |
67 | * | |
68 | * DESCRIPTION: Init walk state callbacks | |
69 | * | |
70 | ******************************************************************************/ | |
1da177e4 | 71 | acpi_status |
4be44fcd | 72 | acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number) |
1da177e4 LT |
73 | { |
74 | ||
75 | switch (pass_number) { | |
76 | case 1: | |
4be44fcd LB |
77 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
78 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
79 | walk_state->descending_callback = acpi_ds_load1_begin_op; |
80 | walk_state->ascending_callback = acpi_ds_load1_end_op; | |
81 | break; | |
82 | ||
83 | case 2: | |
4be44fcd LB |
84 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
85 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
86 | walk_state->descending_callback = acpi_ds_load2_begin_op; |
87 | walk_state->ascending_callback = acpi_ds_load2_end_op; | |
88 | break; | |
89 | ||
90 | case 3: | |
91 | #ifndef ACPI_NO_METHOD_EXECUTION | |
4be44fcd LB |
92 | walk_state->parse_flags |= ACPI_PARSE_EXECUTE | |
93 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
94 | walk_state->descending_callback = acpi_ds_exec_begin_op; |
95 | walk_state->ascending_callback = acpi_ds_exec_end_op; | |
96 | #endif | |
97 | break; | |
98 | ||
99 | default: | |
100 | return (AE_BAD_PARAMETER); | |
101 | } | |
102 | ||
103 | return (AE_OK); | |
104 | } | |
105 | ||
1da177e4 LT |
106 | /******************************************************************************* |
107 | * | |
108 | * FUNCTION: acpi_ds_load1_begin_op | |
109 | * | |
110 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 111 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
112 | * |
113 | * RETURN: Status | |
114 | * | |
115 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
116 | * | |
117 | ******************************************************************************/ | |
118 | ||
119 | acpi_status | |
4be44fcd LB |
120 | acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state, |
121 | union acpi_parse_object ** out_op) | |
1da177e4 | 122 | { |
4be44fcd LB |
123 | union acpi_parse_object *op; |
124 | struct acpi_namespace_node *node; | |
125 | acpi_status status; | |
126 | acpi_object_type object_type; | |
127 | char *path; | |
128 | u32 flags; | |
1da177e4 | 129 | |
4be44fcd | 130 | ACPI_FUNCTION_NAME("ds_load1_begin_op"); |
1da177e4 LT |
131 | |
132 | op = walk_state->op; | |
4be44fcd LB |
133 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
134 | walk_state)); | |
1da177e4 LT |
135 | |
136 | /* We are only interested in opcodes that have an associated name */ | |
137 | ||
138 | if (op) { | |
139 | if (!(walk_state->op_info->flags & AML_NAMED)) { | |
1da177e4 LT |
140 | *out_op = op; |
141 | return (AE_OK); | |
142 | } | |
143 | ||
144 | /* Check if this object has already been installed in the namespace */ | |
145 | ||
146 | if (op->common.node) { | |
147 | *out_op = op; | |
148 | return (AE_OK); | |
149 | } | |
150 | } | |
151 | ||
4be44fcd | 152 | path = acpi_ps_get_next_namestring(&walk_state->parser_state); |
1da177e4 LT |
153 | |
154 | /* Map the raw opcode into an internal object type */ | |
155 | ||
156 | object_type = walk_state->op_info->object_type; | |
157 | ||
4be44fcd LB |
158 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
159 | "State=%p Op=%p [%s]\n", walk_state, op, | |
160 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
161 | |
162 | switch (walk_state->opcode) { | |
163 | case AML_SCOPE_OP: | |
164 | ||
165 | /* | |
166 | * The target name of the Scope() operator must exist at this point so | |
167 | * that we can actually open the scope to enter new names underneath it. | |
168 | * Allow search-to-root for single namesegs. | |
169 | */ | |
4be44fcd LB |
170 | status = |
171 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
172 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, | |
173 | walk_state, &(node)); | |
73459f73 | 174 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
175 | if (status == AE_NOT_FOUND) { |
176 | /* | |
177 | * Table disassembly: | |
178 | * Target of Scope() not found. Generate an External for it, and | |
179 | * insert the name into the namespace. | |
180 | */ | |
4be44fcd LB |
181 | acpi_dm_add_to_external_list(path); |
182 | status = | |
183 | acpi_ns_lookup(walk_state->scope_info, path, | |
184 | object_type, ACPI_IMODE_LOAD_PASS1, | |
185 | ACPI_NS_SEARCH_PARENT, walk_state, | |
186 | &(node)); | |
1da177e4 LT |
187 | } |
188 | #endif | |
4be44fcd LB |
189 | if (ACPI_FAILURE(status)) { |
190 | ACPI_REPORT_NSERROR(path, status); | |
1da177e4 LT |
191 | return (status); |
192 | } | |
193 | ||
194 | /* | |
195 | * Check to make sure that the target is | |
196 | * one of the opcodes that actually opens a scope | |
197 | */ | |
198 | switch (node->type) { | |
4be44fcd | 199 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
200 | case ACPI_TYPE_DEVICE: |
201 | case ACPI_TYPE_POWER: | |
202 | case ACPI_TYPE_PROCESSOR: | |
203 | case ACPI_TYPE_THERMAL: | |
204 | ||
205 | /* These are acceptable types */ | |
206 | break; | |
207 | ||
208 | case ACPI_TYPE_INTEGER: | |
209 | case ACPI_TYPE_STRING: | |
210 | case ACPI_TYPE_BUFFER: | |
211 | ||
212 | /* | |
213 | * These types we will allow, but we will change the type. This | |
214 | * enables some existing code of the form: | |
215 | * | |
216 | * Name (DEB, 0) | |
217 | * Scope (DEB) { ... } | |
218 | * | |
44f6c012 RM |
219 | * Note: silently change the type here. On the second pass, we will report |
220 | * a warning | |
1da177e4 LT |
221 | */ |
222 | ||
4be44fcd LB |
223 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
224 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
225 | path, | |
226 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
227 | |
228 | node->type = ACPI_TYPE_ANY; | |
229 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
230 | break; | |
231 | ||
232 | default: | |
233 | ||
234 | /* All other types are an error */ | |
235 | ||
4be44fcd | 236 | ACPI_REPORT_ERROR(("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", acpi_ut_get_type_name(node->type), path)); |
1da177e4 LT |
237 | |
238 | return (AE_AML_OPERAND_TYPE); | |
239 | } | |
240 | break; | |
241 | ||
1da177e4 LT |
242 | default: |
243 | ||
244 | /* | |
44f6c012 RM |
245 | * For all other named opcodes, we will enter the name into |
246 | * the namespace. | |
1da177e4 LT |
247 | * |
248 | * Setup the search flags. | |
249 | * Since we are entering a name into the namespace, we do not want to | |
250 | * enable the search-to-root upsearch. | |
251 | * | |
252 | * There are only two conditions where it is acceptable that the name | |
253 | * already exists: | |
254 | * 1) the Scope() operator can reopen a scoping object that was | |
255 | * previously defined (Scope, Method, Device, etc.) | |
256 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
257 | * buffer_field, or Package), the name of the object is already | |
258 | * in the namespace. | |
259 | */ | |
260 | if (walk_state->deferred_node) { | |
261 | /* This name is already in the namespace, get the node */ | |
262 | ||
263 | node = walk_state->deferred_node; | |
264 | status = AE_OK; | |
265 | break; | |
266 | } | |
267 | ||
268 | flags = ACPI_NS_NO_UPSEARCH; | |
269 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
4be44fcd | 270 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
1da177e4 | 271 | flags |= ACPI_NS_ERROR_IF_FOUND; |
4be44fcd LB |
272 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
273 | "[%s] Cannot already exist\n", | |
274 | acpi_ut_get_type_name(object_type))); | |
275 | } else { | |
276 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
277 | "[%s] Both Find or Create allowed\n", | |
278 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
279 | } |
280 | ||
281 | /* | |
282 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
283 | * as we go downward in the parse tree. Any necessary subobjects that |
284 | * involve arguments to the opcode must be created as we go back up the | |
285 | * parse tree later. | |
1da177e4 | 286 | */ |
4be44fcd LB |
287 | status = |
288 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
289 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
290 | &(node)); | |
291 | if (ACPI_FAILURE(status)) { | |
292 | ACPI_REPORT_NSERROR(path, status); | |
1da177e4 LT |
293 | return (status); |
294 | } | |
295 | break; | |
296 | } | |
297 | ||
1da177e4 LT |
298 | /* Common exit */ |
299 | ||
300 | if (!op) { | |
301 | /* Create a new op */ | |
302 | ||
4be44fcd | 303 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 LT |
304 | if (!op) { |
305 | return (AE_NO_MEMORY); | |
306 | } | |
307 | } | |
308 | ||
309 | /* Initialize */ | |
310 | ||
311 | op->named.name = node->name.integer; | |
312 | ||
313 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
314 | op->named.path = (u8 *) path; | |
315 | #endif | |
316 | ||
1da177e4 LT |
317 | /* |
318 | * Put the Node in the "op" object that the parser uses, so we | |
319 | * can get it again quickly when this scope is closed | |
320 | */ | |
321 | op->common.node = node; | |
4be44fcd LB |
322 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
323 | op); | |
1da177e4 LT |
324 | |
325 | *out_op = op; | |
326 | return (status); | |
327 | } | |
328 | ||
1da177e4 LT |
329 | /******************************************************************************* |
330 | * | |
331 | * FUNCTION: acpi_ds_load1_end_op | |
332 | * | |
333 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
334 | * |
335 | * RETURN: Status | |
336 | * | |
337 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
338 | * both control methods and everything else. | |
339 | * | |
340 | ******************************************************************************/ | |
341 | ||
4be44fcd | 342 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state * walk_state) |
1da177e4 | 343 | { |
4be44fcd LB |
344 | union acpi_parse_object *op; |
345 | acpi_object_type object_type; | |
346 | acpi_status status = AE_OK; | |
1da177e4 | 347 | |
4be44fcd | 348 | ACPI_FUNCTION_NAME("ds_load1_end_op"); |
1da177e4 LT |
349 | |
350 | op = walk_state->op; | |
4be44fcd LB |
351 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
352 | walk_state)); | |
1da177e4 LT |
353 | |
354 | /* We are only interested in opcodes that have an associated name */ | |
355 | ||
356 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
357 | return (AE_OK); | |
358 | } | |
359 | ||
360 | /* Get the object type to determine if we should pop the scope */ | |
361 | ||
362 | object_type = walk_state->op_info->object_type; | |
363 | ||
364 | #ifndef ACPI_NO_METHOD_EXECUTION | |
365 | if (walk_state->op_info->flags & AML_FIELD) { | |
4be44fcd LB |
366 | if (walk_state->opcode == AML_FIELD_OP || |
367 | walk_state->opcode == AML_BANK_FIELD_OP || | |
368 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
369 | status = acpi_ds_init_field_objects(op, walk_state); | |
1da177e4 LT |
370 | } |
371 | return (status); | |
372 | } | |
373 | ||
1da177e4 | 374 | if (op->common.aml_opcode == AML_REGION_OP) { |
4be44fcd LB |
375 | status = acpi_ex_create_region(op->named.data, op->named.length, |
376 | (acpi_adr_space_type) | |
377 | ((op->common.value.arg)->common. | |
378 | value.integer), walk_state); | |
379 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
380 | return (status); |
381 | } | |
382 | } | |
383 | #endif | |
384 | ||
385 | if (op->common.aml_opcode == AML_NAME_OP) { | |
386 | /* For Name opcode, get the object type from the argument */ | |
387 | ||
388 | if (op->common.value.arg) { | |
4be44fcd LB |
389 | object_type = (acpi_ps_get_opcode_info((op->common. |
390 | value.arg)-> | |
391 | common. | |
392 | aml_opcode))-> | |
393 | object_type; | |
1da177e4 LT |
394 | op->common.node->type = (u8) object_type; |
395 | } | |
396 | } | |
397 | ||
398 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
399 | /* | |
400 | * method_op pkg_length name_string method_flags term_list | |
401 | * | |
402 | * Note: We must create the method node/object pair as soon as we | |
403 | * see the method declaration. This allows later pass1 parsing | |
404 | * of invocations of the method (need to know the number of | |
405 | * arguments.) | |
406 | */ | |
4be44fcd LB |
407 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
408 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
409 | walk_state, op, op->named.node)); | |
1da177e4 | 410 | |
4be44fcd LB |
411 | if (!acpi_ns_get_attached_object(op->named.node)) { |
412 | walk_state->operands[0] = (void *)op->named.node; | |
1da177e4 LT |
413 | walk_state->num_operands = 1; |
414 | ||
4be44fcd LB |
415 | status = |
416 | acpi_ds_create_operands(walk_state, | |
417 | op->common.value.arg); | |
418 | if (ACPI_SUCCESS(status)) { | |
419 | status = acpi_ex_create_method(op->named.data, | |
420 | op->named.length, | |
421 | walk_state); | |
1da177e4 LT |
422 | } |
423 | walk_state->operands[0] = NULL; | |
424 | walk_state->num_operands = 0; | |
425 | ||
4be44fcd | 426 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
427 | return (status); |
428 | } | |
429 | } | |
430 | } | |
431 | ||
432 | /* Pop the scope stack */ | |
433 | ||
4be44fcd LB |
434 | if (acpi_ns_opens_scope(object_type)) { |
435 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
436 | "(%s): Popping scope for Op %p\n", | |
437 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 438 | |
4be44fcd | 439 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
440 | } |
441 | ||
442 | return (status); | |
443 | } | |
444 | ||
1da177e4 LT |
445 | /******************************************************************************* |
446 | * | |
447 | * FUNCTION: acpi_ds_load2_begin_op | |
448 | * | |
449 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 450 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
451 | * |
452 | * RETURN: Status | |
453 | * | |
454 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
455 | * | |
456 | ******************************************************************************/ | |
457 | ||
458 | acpi_status | |
4be44fcd LB |
459 | acpi_ds_load2_begin_op(struct acpi_walk_state * walk_state, |
460 | union acpi_parse_object ** out_op) | |
1da177e4 | 461 | { |
4be44fcd LB |
462 | union acpi_parse_object *op; |
463 | struct acpi_namespace_node *node; | |
464 | acpi_status status; | |
465 | acpi_object_type object_type; | |
466 | char *buffer_ptr; | |
1da177e4 | 467 | |
4be44fcd | 468 | ACPI_FUNCTION_TRACE("ds_load2_begin_op"); |
1da177e4 LT |
469 | |
470 | op = walk_state->op; | |
4be44fcd LB |
471 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
472 | walk_state)); | |
1da177e4 LT |
473 | |
474 | if (op) { | |
88ac00f5 | 475 | if ((walk_state->control_state) && |
4be44fcd LB |
476 | (walk_state->control_state->common.state == |
477 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
88ac00f5 RM |
478 | /* We are executing a while loop outside of a method */ |
479 | ||
4be44fcd LB |
480 | status = acpi_ds_exec_begin_op(walk_state, out_op); |
481 | return_ACPI_STATUS(status); | |
88ac00f5 RM |
482 | } |
483 | ||
1da177e4 LT |
484 | /* We only care about Namespace opcodes here */ |
485 | ||
44f6c012 | 486 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
4be44fcd LB |
487 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || |
488 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
aff8c277 | 489 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
44f6c012 | 490 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
4be44fcd | 491 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
aff8c277 | 492 | |
4be44fcd LB |
493 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
494 | "Begin/EXEC: %s (fl %8.8X)\n", | |
495 | walk_state->op_info->name, | |
496 | walk_state->op_info->flags)); | |
88ac00f5 RM |
497 | |
498 | /* Executing a type1 or type2 opcode outside of a method */ | |
499 | ||
4be44fcd LB |
500 | status = |
501 | acpi_ds_exec_begin_op(walk_state, out_op); | |
502 | return_ACPI_STATUS(status); | |
44f6c012 | 503 | } |
aff8c277 | 504 | #endif |
4be44fcd | 505 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
506 | } |
507 | ||
44f6c012 RM |
508 | /* Get the name we are going to enter or lookup in the namespace */ |
509 | ||
1da177e4 LT |
510 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
511 | /* For Namepath op, get the path string */ | |
512 | ||
513 | buffer_ptr = op->common.value.string; | |
514 | if (!buffer_ptr) { | |
515 | /* No name, just exit */ | |
516 | ||
4be44fcd | 517 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 518 | } |
4be44fcd | 519 | } else { |
1da177e4 LT |
520 | /* Get name from the op */ |
521 | ||
4be44fcd | 522 | buffer_ptr = (char *)&op->named.name; |
1da177e4 | 523 | } |
4be44fcd | 524 | } else { |
1da177e4 LT |
525 | /* Get the namestring from the raw AML */ |
526 | ||
4be44fcd LB |
527 | buffer_ptr = |
528 | acpi_ps_get_next_namestring(&walk_state->parser_state); | |
1da177e4 LT |
529 | } |
530 | ||
531 | /* Map the opcode into an internal object type */ | |
532 | ||
533 | object_type = walk_state->op_info->object_type; | |
534 | ||
4be44fcd LB |
535 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
536 | "State=%p Op=%p Type=%X\n", walk_state, op, | |
537 | object_type)); | |
1da177e4 LT |
538 | |
539 | switch (walk_state->opcode) { | |
540 | case AML_FIELD_OP: | |
541 | case AML_BANK_FIELD_OP: | |
542 | case AML_INDEX_FIELD_OP: | |
543 | ||
544 | node = NULL; | |
545 | status = AE_OK; | |
546 | break; | |
547 | ||
548 | case AML_INT_NAMEPATH_OP: | |
549 | ||
550 | /* | |
44f6c012 RM |
551 | * The name_path is an object reference to an existing object. |
552 | * Don't enter the name into the namespace, but look it up | |
553 | * for use later. | |
1da177e4 | 554 | */ |
4be44fcd LB |
555 | status = |
556 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
557 | object_type, ACPI_IMODE_EXECUTE, | |
558 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
1da177e4 LT |
559 | break; |
560 | ||
561 | case AML_SCOPE_OP: | |
562 | ||
563 | /* | |
44f6c012 RM |
564 | * The Path is an object reference to an existing object. |
565 | * Don't enter the name into the namespace, but look it up | |
566 | * for use later. | |
1da177e4 | 567 | */ |
4be44fcd LB |
568 | status = |
569 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
570 | object_type, ACPI_IMODE_EXECUTE, | |
571 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
572 | if (ACPI_FAILURE(status)) { | |
73459f73 | 573 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
574 | if (status == AE_NOT_FOUND) { |
575 | status = AE_OK; | |
4be44fcd LB |
576 | } else { |
577 | ACPI_REPORT_NSERROR(buffer_ptr, status); | |
1da177e4 LT |
578 | } |
579 | #else | |
4be44fcd | 580 | ACPI_REPORT_NSERROR(buffer_ptr, status); |
1da177e4 | 581 | #endif |
4be44fcd | 582 | return_ACPI_STATUS(status); |
1da177e4 LT |
583 | } |
584 | /* | |
585 | * We must check to make sure that the target is | |
586 | * one of the opcodes that actually opens a scope | |
587 | */ | |
588 | switch (node->type) { | |
4be44fcd | 589 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
590 | case ACPI_TYPE_DEVICE: |
591 | case ACPI_TYPE_POWER: | |
592 | case ACPI_TYPE_PROCESSOR: | |
593 | case ACPI_TYPE_THERMAL: | |
594 | ||
595 | /* These are acceptable types */ | |
596 | break; | |
597 | ||
598 | case ACPI_TYPE_INTEGER: | |
599 | case ACPI_TYPE_STRING: | |
600 | case ACPI_TYPE_BUFFER: | |
601 | ||
602 | /* | |
603 | * These types we will allow, but we will change the type. This | |
604 | * enables some existing code of the form: | |
605 | * | |
606 | * Name (DEB, 0) | |
607 | * Scope (DEB) { ... } | |
608 | */ | |
609 | ||
4be44fcd | 610 | ACPI_REPORT_WARNING(("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", buffer_ptr, acpi_ut_get_type_name(node->type))); |
1da177e4 LT |
611 | |
612 | node->type = ACPI_TYPE_ANY; | |
613 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
614 | break; | |
615 | ||
616 | default: | |
617 | ||
618 | /* All other types are an error */ | |
619 | ||
4be44fcd | 620 | ACPI_REPORT_ERROR(("Invalid type (%s) for target of Scope operator [%4.4s]\n", acpi_ut_get_type_name(node->type), buffer_ptr)); |
1da177e4 LT |
621 | |
622 | return (AE_AML_OPERAND_TYPE); | |
623 | } | |
624 | break; | |
625 | ||
626 | default: | |
627 | ||
628 | /* All other opcodes */ | |
629 | ||
630 | if (op && op->common.node) { | |
631 | /* This op/node was previously entered into the namespace */ | |
632 | ||
633 | node = op->common.node; | |
634 | ||
4be44fcd LB |
635 | if (acpi_ns_opens_scope(object_type)) { |
636 | status = | |
637 | acpi_ds_scope_stack_push(node, object_type, | |
638 | walk_state); | |
639 | if (ACPI_FAILURE(status)) { | |
640 | return_ACPI_STATUS(status); | |
1da177e4 LT |
641 | } |
642 | ||
643 | } | |
4be44fcd | 644 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
645 | } |
646 | ||
647 | /* | |
648 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
649 | * as we go downward in the parse tree. Any necessary subobjects that |
650 | * involve arguments to the opcode must be created as we go back up the | |
651 | * parse tree later. | |
1da177e4 LT |
652 | * |
653 | * Note: Name may already exist if we are executing a deferred opcode. | |
654 | */ | |
655 | if (walk_state->deferred_node) { | |
656 | /* This name is already in the namespace, get the node */ | |
657 | ||
658 | node = walk_state->deferred_node; | |
659 | status = AE_OK; | |
660 | break; | |
661 | } | |
662 | ||
88ac00f5 RM |
663 | /* Add new entry into namespace */ |
664 | ||
4be44fcd LB |
665 | status = |
666 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
667 | object_type, ACPI_IMODE_LOAD_PASS2, | |
668 | ACPI_NS_NO_UPSEARCH, walk_state, &(node)); | |
1da177e4 LT |
669 | break; |
670 | } | |
671 | ||
4be44fcd LB |
672 | if (ACPI_FAILURE(status)) { |
673 | ACPI_REPORT_NSERROR(buffer_ptr, status); | |
674 | return_ACPI_STATUS(status); | |
1da177e4 LT |
675 | } |
676 | ||
1da177e4 LT |
677 | if (!op) { |
678 | /* Create a new op */ | |
679 | ||
4be44fcd | 680 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 681 | if (!op) { |
4be44fcd | 682 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
683 | } |
684 | ||
685 | /* Initialize the new op */ | |
686 | ||
687 | if (node) { | |
688 | op->named.name = node->name.integer; | |
689 | } | |
88ac00f5 | 690 | *out_op = op; |
1da177e4 LT |
691 | } |
692 | ||
693 | /* | |
694 | * Put the Node in the "op" object that the parser uses, so we | |
695 | * can get it again quickly when this scope is closed | |
696 | */ | |
697 | op->common.node = node; | |
698 | ||
4be44fcd | 699 | return_ACPI_STATUS(status); |
1da177e4 LT |
700 | } |
701 | ||
1da177e4 LT |
702 | /******************************************************************************* |
703 | * | |
704 | * FUNCTION: acpi_ds_load2_end_op | |
705 | * | |
706 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
707 | * |
708 | * RETURN: Status | |
709 | * | |
710 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
711 | * both control methods and everything else. | |
712 | * | |
713 | ******************************************************************************/ | |
714 | ||
4be44fcd | 715 | acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 716 | { |
4be44fcd LB |
717 | union acpi_parse_object *op; |
718 | acpi_status status = AE_OK; | |
719 | acpi_object_type object_type; | |
720 | struct acpi_namespace_node *node; | |
721 | union acpi_parse_object *arg; | |
722 | struct acpi_namespace_node *new_node; | |
1da177e4 | 723 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd | 724 | u32 i; |
1da177e4 LT |
725 | #endif |
726 | ||
4be44fcd | 727 | ACPI_FUNCTION_TRACE("ds_load2_end_op"); |
1da177e4 LT |
728 | |
729 | op = walk_state->op; | |
4be44fcd LB |
730 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", |
731 | walk_state->op_info->name, op, walk_state)); | |
1da177e4 | 732 | |
88ac00f5 | 733 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
734 | |
735 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 | 736 | #ifndef ACPI_NO_METHOD_EXECUTION |
aff8c277 | 737 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
88ac00f5 RM |
738 | /* No namespace object. Executable opcode? */ |
739 | ||
740 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
4be44fcd LB |
741 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
742 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
743 | "End/EXEC: %s (fl %8.8X)\n", | |
744 | walk_state->op_info->name, | |
745 | walk_state->op_info->flags)); | |
88ac00f5 RM |
746 | |
747 | /* Executing a type1 or type2 opcode outside of a method */ | |
748 | ||
4be44fcd LB |
749 | status = acpi_ds_exec_end_op(walk_state); |
750 | return_ACPI_STATUS(status); | |
88ac00f5 | 751 | } |
aff8c277 | 752 | #endif |
88ac00f5 | 753 | #endif |
4be44fcd | 754 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
755 | } |
756 | ||
757 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
4be44fcd LB |
758 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
759 | "Ending scope Op=%p State=%p\n", op, | |
760 | walk_state)); | |
1da177e4 LT |
761 | } |
762 | ||
1da177e4 LT |
763 | object_type = walk_state->op_info->object_type; |
764 | ||
765 | /* | |
766 | * Get the Node/name from the earlier lookup | |
767 | * (It was saved in the *op structure) | |
768 | */ | |
769 | node = op->common.node; | |
770 | ||
771 | /* | |
772 | * Put the Node on the object stack (Contains the ACPI Name of | |
773 | * this object) | |
774 | */ | |
4be44fcd | 775 | walk_state->operands[0] = (void *)node; |
1da177e4 LT |
776 | walk_state->num_operands = 1; |
777 | ||
778 | /* Pop the scope stack */ | |
779 | ||
4be44fcd LB |
780 | if (acpi_ns_opens_scope(object_type) && |
781 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
782 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
783 | "(%s) Popping scope for Op %p\n", | |
784 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 785 | |
4be44fcd LB |
786 | status = acpi_ds_scope_stack_pop(walk_state); |
787 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
788 | goto cleanup; |
789 | } | |
790 | } | |
791 | ||
792 | /* | |
793 | * Named operations are as follows: | |
794 | * | |
795 | * AML_ALIAS | |
796 | * AML_BANKFIELD | |
797 | * AML_CREATEBITFIELD | |
798 | * AML_CREATEBYTEFIELD | |
799 | * AML_CREATEDWORDFIELD | |
800 | * AML_CREATEFIELD | |
801 | * AML_CREATEQWORDFIELD | |
802 | * AML_CREATEWORDFIELD | |
803 | * AML_DATA_REGION | |
804 | * AML_DEVICE | |
805 | * AML_EVENT | |
806 | * AML_FIELD | |
807 | * AML_INDEXFIELD | |
808 | * AML_METHOD | |
809 | * AML_METHODCALL | |
810 | * AML_MUTEX | |
811 | * AML_NAME | |
812 | * AML_NAMEDFIELD | |
813 | * AML_OPREGION | |
814 | * AML_POWERRES | |
815 | * AML_PROCESSOR | |
816 | * AML_SCOPE | |
817 | * AML_THERMALZONE | |
818 | */ | |
819 | ||
4be44fcd LB |
820 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
821 | "Create-Load [%s] State=%p Op=%p named_obj=%p\n", | |
822 | acpi_ps_get_opcode_name(op->common.aml_opcode), | |
823 | walk_state, op, node)); | |
1da177e4 LT |
824 | |
825 | /* Decode the opcode */ | |
826 | ||
827 | arg = op->common.value.arg; | |
828 | ||
829 | switch (walk_state->op_info->type) { | |
830 | #ifndef ACPI_NO_METHOD_EXECUTION | |
831 | ||
832 | case AML_TYPE_CREATE_FIELD: | |
833 | ||
834 | /* | |
835 | * Create the field object, but the field buffer and index must | |
836 | * be evaluated later during the execution phase | |
837 | */ | |
4be44fcd | 838 | status = acpi_ds_create_buffer_field(op, walk_state); |
1da177e4 LT |
839 | break; |
840 | ||
4be44fcd | 841 | case AML_TYPE_NAMED_FIELD: |
1da177e4 LT |
842 | |
843 | switch (op->common.aml_opcode) { | |
844 | case AML_INDEX_FIELD_OP: | |
845 | ||
4be44fcd LB |
846 | status = |
847 | acpi_ds_create_index_field(op, | |
848 | (acpi_handle) arg-> | |
849 | common.node, walk_state); | |
1da177e4 LT |
850 | break; |
851 | ||
852 | case AML_BANK_FIELD_OP: | |
853 | ||
4be44fcd LB |
854 | status = |
855 | acpi_ds_create_bank_field(op, arg->common.node, | |
856 | walk_state); | |
1da177e4 LT |
857 | break; |
858 | ||
859 | case AML_FIELD_OP: | |
860 | ||
4be44fcd LB |
861 | status = |
862 | acpi_ds_create_field(op, arg->common.node, | |
863 | walk_state); | |
1da177e4 LT |
864 | break; |
865 | ||
866 | default: | |
867 | /* All NAMED_FIELD opcodes must be handled above */ | |
868 | break; | |
869 | } | |
870 | break; | |
871 | ||
4be44fcd | 872 | case AML_TYPE_NAMED_SIMPLE: |
1da177e4 | 873 | |
4be44fcd LB |
874 | status = acpi_ds_create_operands(walk_state, arg); |
875 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
876 | goto cleanup; |
877 | } | |
878 | ||
879 | switch (op->common.aml_opcode) { | |
880 | case AML_PROCESSOR_OP: | |
881 | ||
4be44fcd | 882 | status = acpi_ex_create_processor(walk_state); |
1da177e4 LT |
883 | break; |
884 | ||
885 | case AML_POWER_RES_OP: | |
886 | ||
4be44fcd | 887 | status = acpi_ex_create_power_resource(walk_state); |
1da177e4 LT |
888 | break; |
889 | ||
890 | case AML_MUTEX_OP: | |
891 | ||
4be44fcd | 892 | status = acpi_ex_create_mutex(walk_state); |
1da177e4 LT |
893 | break; |
894 | ||
895 | case AML_EVENT_OP: | |
896 | ||
4be44fcd | 897 | status = acpi_ex_create_event(walk_state); |
1da177e4 LT |
898 | break; |
899 | ||
900 | case AML_DATA_REGION_OP: | |
901 | ||
4be44fcd | 902 | status = acpi_ex_create_table_region(walk_state); |
1da177e4 LT |
903 | break; |
904 | ||
905 | case AML_ALIAS_OP: | |
906 | ||
4be44fcd | 907 | status = acpi_ex_create_alias(walk_state); |
1da177e4 LT |
908 | break; |
909 | ||
910 | default: | |
911 | /* Unknown opcode */ | |
912 | ||
913 | status = AE_OK; | |
914 | goto cleanup; | |
915 | } | |
916 | ||
917 | /* Delete operands */ | |
918 | ||
919 | for (i = 1; i < walk_state->num_operands; i++) { | |
4be44fcd | 920 | acpi_ut_remove_reference(walk_state->operands[i]); |
1da177e4 LT |
921 | walk_state->operands[i] = NULL; |
922 | } | |
923 | ||
924 | break; | |
4be44fcd | 925 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
926 | |
927 | case AML_TYPE_NAMED_COMPLEX: | |
928 | ||
929 | switch (op->common.aml_opcode) { | |
930 | #ifndef ACPI_NO_METHOD_EXECUTION | |
931 | case AML_REGION_OP: | |
932 | /* | |
44f6c012 RM |
933 | * The op_region is not fully parsed at this time. Only valid |
934 | * argument is the space_id. (We must save the address of the | |
935 | * AML of the address and length operands) | |
1da177e4 LT |
936 | */ |
937 | /* | |
938 | * If we have a valid region, initialize it | |
939 | * Namespace is NOT locked at this point. | |
940 | */ | |
4be44fcd LB |
941 | status = |
942 | acpi_ev_initialize_region | |
943 | (acpi_ns_get_attached_object(node), FALSE); | |
944 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
945 | /* |
946 | * If AE_NOT_EXIST is returned, it is not fatal | |
947 | * because many regions get created before a handler | |
948 | * is installed for said region. | |
949 | */ | |
950 | if (AE_NOT_EXIST == status) { | |
951 | status = AE_OK; | |
952 | } | |
953 | } | |
954 | break; | |
955 | ||
1da177e4 LT |
956 | case AML_NAME_OP: |
957 | ||
4be44fcd | 958 | status = acpi_ds_create_node(walk_state, node, op); |
1da177e4 | 959 | break; |
4be44fcd | 960 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
961 | |
962 | default: | |
963 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
964 | /* Note: Method objects were already created in Pass 1 */ | |
965 | break; | |
966 | } | |
967 | break; | |
968 | ||
1da177e4 LT |
969 | case AML_CLASS_INTERNAL: |
970 | ||
971 | /* case AML_INT_NAMEPATH_OP: */ | |
972 | break; | |
973 | ||
1da177e4 LT |
974 | case AML_CLASS_METHOD_CALL: |
975 | ||
4be44fcd LB |
976 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
977 | "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n", | |
978 | walk_state, op, node)); | |
1da177e4 LT |
979 | |
980 | /* | |
981 | * Lookup the method name and save the Node | |
982 | */ | |
4be44fcd LB |
983 | status = |
984 | acpi_ns_lookup(walk_state->scope_info, | |
985 | arg->common.value.string, ACPI_TYPE_ANY, | |
986 | ACPI_IMODE_LOAD_PASS2, | |
987 | ACPI_NS_SEARCH_PARENT | | |
988 | ACPI_NS_DONT_OPEN_SCOPE, walk_state, | |
989 | &(new_node)); | |
990 | if (ACPI_SUCCESS(status)) { | |
bd6dbdf3 | 991 | |
1da177e4 LT |
992 | /* |
993 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
994 | * We didn't search for a method on purpose, to see if the name |
995 | * would resolve | |
1da177e4 LT |
996 | */ |
997 | if (new_node->type != ACPI_TYPE_METHOD) { | |
998 | status = AE_AML_OPERAND_TYPE; | |
999 | } | |
1000 | ||
44f6c012 RM |
1001 | /* We could put the returned object (Node) on the object stack for |
1002 | * later, but for now, we will put it in the "op" object that the | |
1003 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
1004 | */ |
1005 | op->common.node = new_node; | |
4be44fcd LB |
1006 | } else { |
1007 | ACPI_REPORT_NSERROR(arg->common.value.string, status); | |
1da177e4 LT |
1008 | } |
1009 | break; | |
1010 | ||
1da177e4 LT |
1011 | default: |
1012 | break; | |
1013 | } | |
1014 | ||
4be44fcd | 1015 | cleanup: |
1da177e4 LT |
1016 | |
1017 | /* Remove the Node pushed at the very beginning */ | |
1018 | ||
1019 | walk_state->operands[0] = NULL; | |
1020 | walk_state->num_operands = 0; | |
4be44fcd | 1021 | return_ACPI_STATUS(status); |
1da177e4 | 1022 | } |