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73459f73 RM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: psloop - Main AML parse loop | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
25f044e6 | 8 | * Copyright (C) 2000 - 2013, Intel Corp. |
73459f73 RM |
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 | ||
73459f73 | 44 | /* |
4d0b4af9 MK |
45 | * Parse the AML and build an operation tree as most interpreters, (such as |
46 | * Perl) do. Parsing is done by hand rather than with a YACC generated parser | |
47 | * to tightly constrain stack and dynamic memory usage. Parsing is kept | |
48 | * flexible and the code fairly compact by parsing based on a list of AML | |
49 | * opcode templates in aml_op_info[]. | |
73459f73 RM |
50 | */ |
51 | ||
52 | #include <acpi/acpi.h> | |
e2f7a777 LB |
53 | #include "accommon.h" |
54 | #include "acparser.h" | |
55 | #include "acdispat.h" | |
56 | #include "amlcode.h" | |
73459f73 RM |
57 | |
58 | #define _COMPONENT ACPI_PARSER | |
4be44fcd | 59 | ACPI_MODULE_NAME("psloop") |
73459f73 | 60 | |
4d0b4af9 | 61 | /* Local prototypes */ |
4d0b4af9 MK |
62 | static acpi_status |
63 | acpi_ps_get_arguments(struct acpi_walk_state *walk_state, | |
64 | u8 * aml_op_start, union acpi_parse_object *op); | |
65 | ||
7f0c826a | 66 | static void |
9a884ab6 LM |
67 | acpi_ps_link_module_code(union acpi_parse_object *parent_op, |
68 | u8 *aml_start, u32 aml_length, acpi_owner_id owner_id); | |
7f0c826a | 69 | |
4d0b4af9 MK |
70 | /******************************************************************************* |
71 | * | |
72 | * FUNCTION: acpi_ps_get_arguments | |
73 | * | |
74 | * PARAMETERS: walk_state - Current state | |
75 | * aml_op_start - Op start in AML | |
ba494bee | 76 | * op - Current Op |
4d0b4af9 MK |
77 | * |
78 | * RETURN: Status | |
79 | * | |
80 | * DESCRIPTION: Get arguments for passed Op. | |
81 | * | |
82 | ******************************************************************************/ | |
83 | ||
84 | static acpi_status | |
85 | acpi_ps_get_arguments(struct acpi_walk_state *walk_state, | |
86 | u8 * aml_op_start, union acpi_parse_object *op) | |
87 | { | |
88 | acpi_status status = AE_OK; | |
89 | union acpi_parse_object *arg = NULL; | |
7f0c826a | 90 | const struct acpi_opcode_info *op_info; |
4d0b4af9 MK |
91 | |
92 | ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state); | |
93 | ||
94 | switch (op->common.aml_opcode) { | |
95 | case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ | |
96 | case AML_WORD_OP: /* AML_WORDDATA_ARG */ | |
97 | case AML_DWORD_OP: /* AML_DWORDATA_ARG */ | |
98 | case AML_QWORD_OP: /* AML_QWORDATA_ARG */ | |
99 | case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ | |
100 | ||
101 | /* Fill in constant or string argument directly */ | |
102 | ||
103 | acpi_ps_get_next_simple_arg(&(walk_state->parser_state), | |
104 | GET_CURRENT_ARG_TYPE(walk_state-> | |
105 | arg_types), | |
106 | op); | |
107 | break; | |
108 | ||
109 | case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ | |
110 | ||
111 | status = | |
112 | acpi_ps_get_next_namepath(walk_state, | |
113 | &(walk_state->parser_state), op, | |
114 | 1); | |
115 | if (ACPI_FAILURE(status)) { | |
116 | return_ACPI_STATUS(status); | |
117 | } | |
118 | ||
119 | walk_state->arg_types = 0; | |
120 | break; | |
121 | ||
122 | default: | |
123 | /* | |
124 | * Op is not a constant or string, append each argument to the Op | |
125 | */ | |
126 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) | |
127 | && !walk_state->arg_count) { | |
128 | walk_state->aml_offset = | |
129 | (u32) ACPI_PTR_DIFF(walk_state->parser_state.aml, | |
130 | walk_state->parser_state. | |
131 | aml_start); | |
132 | ||
133 | status = | |
134 | acpi_ps_get_next_arg(walk_state, | |
135 | &(walk_state->parser_state), | |
136 | GET_CURRENT_ARG_TYPE | |
137 | (walk_state->arg_types), &arg); | |
138 | if (ACPI_FAILURE(status)) { | |
139 | return_ACPI_STATUS(status); | |
140 | } | |
141 | ||
142 | if (arg) { | |
143 | arg->common.aml_offset = walk_state->aml_offset; | |
144 | acpi_ps_append_arg(op, arg); | |
145 | } | |
146 | ||
147 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
148 | } | |
149 | ||
7f0c826a LM |
150 | /* |
151 | * Handle executable code at "module-level". This refers to | |
152 | * executable opcodes that appear outside of any control method. | |
153 | */ | |
154 | if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) && | |
4d0b4af9 MK |
155 | ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) { |
156 | /* | |
157 | * We want to skip If/Else/While constructs during Pass1 because we | |
158 | * want to actually conditionally execute the code during Pass2. | |
159 | * | |
160 | * Except for disassembly, where we always want to walk the | |
161 | * If/Else/While packages | |
162 | */ | |
163 | switch (op->common.aml_opcode) { | |
164 | case AML_IF_OP: | |
165 | case AML_ELSE_OP: | |
166 | case AML_WHILE_OP: | |
7f0c826a LM |
167 | /* |
168 | * Currently supported module-level opcodes are: | |
169 | * IF/ELSE/WHILE. These appear to be the most common, | |
170 | * and easiest to support since they open an AML | |
171 | * package. | |
172 | */ | |
173 | if (walk_state->pass_number == | |
174 | ACPI_IMODE_LOAD_PASS1) { | |
9a884ab6 LM |
175 | acpi_ps_link_module_code(op->common. |
176 | parent, | |
177 | aml_op_start, | |
178 | (u32) | |
179 | (walk_state-> | |
7f0c826a LM |
180 | parser_state. |
181 | pkg_end - | |
9a884ab6 | 182 | aml_op_start), |
7f0c826a LM |
183 | walk_state-> |
184 | owner_id); | |
185 | } | |
186 | ||
4d0b4af9 MK |
187 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
188 | "Pass1: Skipping an If/Else/While body\n")); | |
189 | ||
190 | /* Skip body of if/else/while in pass 1 */ | |
191 | ||
192 | walk_state->parser_state.aml = | |
193 | walk_state->parser_state.pkg_end; | |
194 | walk_state->arg_count = 0; | |
195 | break; | |
196 | ||
197 | default: | |
7f0c826a LM |
198 | /* |
199 | * Check for an unsupported executable opcode at module | |
200 | * level. We must be in PASS1, the parent must be a SCOPE, | |
201 | * The opcode class must be EXECUTE, and the opcode must | |
202 | * not be an argument to another opcode. | |
203 | */ | |
204 | if ((walk_state->pass_number == | |
205 | ACPI_IMODE_LOAD_PASS1) | |
206 | && (op->common.parent->common.aml_opcode == | |
207 | AML_SCOPE_OP)) { | |
208 | op_info = | |
209 | acpi_ps_get_opcode_info(op->common. | |
210 | aml_opcode); | |
211 | if ((op_info->class == | |
212 | AML_CLASS_EXECUTE) && (!arg)) { | |
213 | ACPI_WARNING((AE_INFO, | |
00eb3255 BM |
214 | "Unsupported module-level executable opcode " |
215 | "0x%.2X at table offset 0x%.4X", | |
216 | op->common. | |
217 | aml_opcode, | |
218 | (u32) | |
219 | (ACPI_PTR_DIFF | |
220 | (aml_op_start, | |
221 | walk_state-> | |
222 | parser_state. | |
223 | aml_start) + | |
224 | sizeof(struct | |
225 | acpi_table_header)))); | |
7f0c826a LM |
226 | } |
227 | } | |
4d0b4af9 MK |
228 | break; |
229 | } | |
230 | } | |
7f0c826a LM |
231 | |
232 | /* Special processing for certain opcodes */ | |
4d0b4af9 MK |
233 | |
234 | switch (op->common.aml_opcode) { | |
235 | case AML_METHOD_OP: | |
236 | /* | |
237 | * Skip parsing of control method because we don't have enough | |
238 | * info in the first pass to parse it correctly. | |
239 | * | |
240 | * Save the length and address of the body | |
241 | */ | |
242 | op->named.data = walk_state->parser_state.aml; | |
243 | op->named.length = (u32) | |
244 | (walk_state->parser_state.pkg_end - | |
245 | walk_state->parser_state.aml); | |
246 | ||
247 | /* Skip body of method */ | |
248 | ||
249 | walk_state->parser_state.aml = | |
250 | walk_state->parser_state.pkg_end; | |
251 | walk_state->arg_count = 0; | |
252 | break; | |
253 | ||
254 | case AML_BUFFER_OP: | |
255 | case AML_PACKAGE_OP: | |
256 | case AML_VAR_PACKAGE_OP: | |
257 | ||
258 | if ((op->common.parent) && | |
259 | (op->common.parent->common.aml_opcode == | |
260 | AML_NAME_OP) | |
261 | && (walk_state->pass_number <= | |
262 | ACPI_IMODE_LOAD_PASS2)) { | |
263 | /* | |
264 | * Skip parsing of Buffers and Packages because we don't have | |
265 | * enough info in the first pass to parse them correctly. | |
266 | */ | |
267 | op->named.data = aml_op_start; | |
268 | op->named.length = (u32) | |
269 | (walk_state->parser_state.pkg_end - | |
270 | aml_op_start); | |
271 | ||
272 | /* Skip body */ | |
273 | ||
274 | walk_state->parser_state.aml = | |
275 | walk_state->parser_state.pkg_end; | |
276 | walk_state->arg_count = 0; | |
277 | } | |
278 | break; | |
279 | ||
280 | case AML_WHILE_OP: | |
281 | ||
282 | if (walk_state->control_state) { | |
283 | walk_state->control_state->control.package_end = | |
284 | walk_state->parser_state.pkg_end; | |
285 | } | |
286 | break; | |
287 | ||
288 | default: | |
289 | ||
290 | /* No action for all other opcodes */ | |
1d1ea1b7 | 291 | |
4d0b4af9 MK |
292 | break; |
293 | } | |
294 | ||
295 | break; | |
296 | } | |
297 | ||
298 | return_ACPI_STATUS(AE_OK); | |
299 | } | |
300 | ||
7f0c826a LM |
301 | /******************************************************************************* |
302 | * | |
303 | * FUNCTION: acpi_ps_link_module_code | |
304 | * | |
9a884ab6 LM |
305 | * PARAMETERS: parent_op - Parent parser op |
306 | * aml_start - Pointer to the AML | |
7f0c826a LM |
307 | * aml_length - Length of executable AML |
308 | * owner_id - owner_id of module level code | |
309 | * | |
310 | * RETURN: None. | |
311 | * | |
312 | * DESCRIPTION: Wrap the module-level code with a method object and link the | |
313 | * object to the global list. Note, the mutex field of the method | |
314 | * object is used to link multiple module-level code objects. | |
315 | * | |
316 | ******************************************************************************/ | |
317 | ||
318 | static void | |
9a884ab6 LM |
319 | acpi_ps_link_module_code(union acpi_parse_object *parent_op, |
320 | u8 *aml_start, u32 aml_length, acpi_owner_id owner_id) | |
7f0c826a LM |
321 | { |
322 | union acpi_operand_object *prev; | |
323 | union acpi_operand_object *next; | |
324 | union acpi_operand_object *method_obj; | |
9a884ab6 | 325 | struct acpi_namespace_node *parent_node; |
7f0c826a LM |
326 | |
327 | /* Get the tail of the list */ | |
328 | ||
329 | prev = next = acpi_gbl_module_code_list; | |
330 | while (next) { | |
331 | prev = next; | |
332 | next = next->method.mutex; | |
333 | } | |
334 | ||
335 | /* | |
336 | * Insert the module level code into the list. Merge it if it is | |
337 | * adjacent to the previous element. | |
338 | */ | |
339 | if (!prev || | |
340 | ((prev->method.aml_start + prev->method.aml_length) != aml_start)) { | |
341 | ||
342 | /* Create, initialize, and link a new temporary method object */ | |
343 | ||
344 | method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); | |
345 | if (!method_obj) { | |
346 | return; | |
347 | } | |
348 | ||
9a884ab6 LM |
349 | if (parent_op->common.node) { |
350 | parent_node = parent_op->common.node; | |
351 | } else { | |
352 | parent_node = acpi_gbl_root_node; | |
353 | } | |
354 | ||
7f0c826a LM |
355 | method_obj->method.aml_start = aml_start; |
356 | method_obj->method.aml_length = aml_length; | |
357 | method_obj->method.owner_id = owner_id; | |
26294842 | 358 | method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL; |
7f0c826a | 359 | |
9a884ab6 LM |
360 | /* |
361 | * Save the parent node in next_object. This is cheating, but we | |
362 | * don't want to expand the method object. | |
363 | */ | |
364 | method_obj->method.next_object = | |
365 | ACPI_CAST_PTR(union acpi_operand_object, parent_node); | |
366 | ||
7f0c826a LM |
367 | if (!prev) { |
368 | acpi_gbl_module_code_list = method_obj; | |
369 | } else { | |
370 | prev->method.mutex = method_obj; | |
371 | } | |
372 | } else { | |
373 | prev->method.aml_length += aml_length; | |
374 | } | |
375 | } | |
376 | ||
73459f73 RM |
377 | /******************************************************************************* |
378 | * | |
379 | * FUNCTION: acpi_ps_parse_loop | |
380 | * | |
381 | * PARAMETERS: walk_state - Current state | |
382 | * | |
383 | * RETURN: Status | |
384 | * | |
385 | * DESCRIPTION: Parse AML (pointed to by the current parser state) and return | |
386 | * a tree of ops. | |
387 | * | |
388 | ******************************************************************************/ | |
389 | ||
4be44fcd | 390 | acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) |
73459f73 | 391 | { |
4be44fcd | 392 | acpi_status status = AE_OK; |
4be44fcd | 393 | union acpi_parse_object *op = NULL; /* current op */ |
4be44fcd LB |
394 | struct acpi_parse_state *parser_state; |
395 | u8 *aml_op_start = NULL; | |
73459f73 | 396 | |
b229cf92 | 397 | ACPI_FUNCTION_TRACE_PTR(ps_parse_loop, walk_state); |
73459f73 RM |
398 | |
399 | if (walk_state->descending_callback == NULL) { | |
4be44fcd | 400 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
73459f73 RM |
401 | } |
402 | ||
403 | parser_state = &walk_state->parser_state; | |
404 | walk_state->arg_types = 0; | |
405 | ||
406 | #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) | |
407 | ||
408 | if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) { | |
52fc0b02 | 409 | |
73459f73 RM |
410 | /* We are restarting a preempted control method */ |
411 | ||
4be44fcd | 412 | if (acpi_ps_has_completed_scope(parser_state)) { |
73459f73 RM |
413 | /* |
414 | * We must check if a predicate to an IF or WHILE statement | |
415 | * was just completed | |
416 | */ | |
417 | if ((parser_state->scope->parse_scope.op) && | |
4be44fcd LB |
418 | ((parser_state->scope->parse_scope.op->common. |
419 | aml_opcode == AML_IF_OP) | |
420 | || (parser_state->scope->parse_scope.op->common. | |
421 | aml_opcode == AML_WHILE_OP)) | |
422 | && (walk_state->control_state) | |
423 | && (walk_state->control_state->common.state == | |
424 | ACPI_CONTROL_PREDICATE_EXECUTING)) { | |
73459f73 RM |
425 | /* |
426 | * A predicate was just completed, get the value of the | |
427 | * predicate and branch based on that value | |
428 | */ | |
429 | walk_state->op = NULL; | |
4be44fcd LB |
430 | status = |
431 | acpi_ds_get_predicate_value(walk_state, | |
432 | ACPI_TO_POINTER | |
433 | (TRUE)); | |
434 | if (ACPI_FAILURE(status) | |
435 | && ((status & AE_CODE_MASK) != | |
436 | AE_CODE_CONTROL)) { | |
73459f73 | 437 | if (status == AE_AML_NO_RETURN_VALUE) { |
b8e4d893 BM |
438 | ACPI_EXCEPTION((AE_INFO, status, |
439 | "Invoked method did not return a value")); | |
73459f73 | 440 | } |
4d0b4af9 | 441 | |
b8e4d893 | 442 | ACPI_EXCEPTION((AE_INFO, status, |
b229cf92 | 443 | "GetPredicate Failed")); |
4be44fcd | 444 | return_ACPI_STATUS(status); |
73459f73 RM |
445 | } |
446 | ||
4be44fcd LB |
447 | status = |
448 | acpi_ps_next_parse_state(walk_state, op, | |
449 | status); | |
73459f73 RM |
450 | } |
451 | ||
4be44fcd LB |
452 | acpi_ps_pop_scope(parser_state, &op, |
453 | &walk_state->arg_types, | |
454 | &walk_state->arg_count); | |
455 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, | |
456 | "Popped scope, Op=%p\n", op)); | |
457 | } else if (walk_state->prev_op) { | |
52fc0b02 | 458 | |
73459f73 RM |
459 | /* We were in the middle of an op */ |
460 | ||
4d0b4af9 MK |
461 | op = walk_state->prev_op; |
462 | walk_state->arg_types = walk_state->prev_arg_types; | |
463 | } | |
464 | } | |
465 | #endif | |
73459f73 | 466 | |
4d0b4af9 | 467 | /* Iterative parsing loop, while there is more AML to process: */ |
73459f73 | 468 | |
4d0b4af9 MK |
469 | while ((parser_state->aml < parser_state->aml_end) || (op)) { |
470 | aml_op_start = parser_state->aml; | |
471 | if (!op) { | |
472 | status = | |
473 | acpi_ps_create_op(walk_state, aml_op_start, &op); | |
474 | if (ACPI_FAILURE(status)) { | |
475 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
73459f73 RM |
476 | continue; |
477 | } | |
478 | ||
4d0b4af9 | 479 | if (status == AE_CTRL_PARSE_PENDING) { |
73459f73 | 480 | status = AE_OK; |
73459f73 RM |
481 | } |
482 | ||
4d0b4af9 MK |
483 | status = |
484 | acpi_ps_complete_op(walk_state, &op, | |
485 | status); | |
4be44fcd | 486 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 487 | return_ACPI_STATUS(status); |
73459f73 RM |
488 | } |
489 | ||
4d0b4af9 | 490 | continue; |
73459f73 RM |
491 | } |
492 | ||
493 | op->common.aml_offset = walk_state->aml_offset; | |
494 | ||
495 | if (walk_state->op_info) { | |
4be44fcd | 496 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
b229cf92 | 497 | "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n", |
4be44fcd LB |
498 | (u32) op->common.aml_opcode, |
499 | walk_state->op_info->name, op, | |
500 | parser_state->aml, | |
501 | op->common.aml_offset)); | |
73459f73 RM |
502 | } |
503 | } | |
504 | ||
73459f73 RM |
505 | /* |
506 | * Start arg_count at zero because we don't know if there are | |
507 | * any args yet | |
508 | */ | |
509 | walk_state->arg_count = 0; | |
510 | ||
511 | /* Are there any arguments that must be processed? */ | |
512 | ||
513 | if (walk_state->arg_types) { | |
52fc0b02 | 514 | |
73459f73 RM |
515 | /* Get arguments */ |
516 | ||
4d0b4af9 MK |
517 | status = |
518 | acpi_ps_get_arguments(walk_state, aml_op_start, op); | |
519 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 520 | status = |
4d0b4af9 MK |
521 | acpi_ps_complete_op(walk_state, &op, |
522 | status); | |
4be44fcd | 523 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 524 | return_ACPI_STATUS(status); |
73459f73 | 525 | } |
73459f73 | 526 | |
4d0b4af9 | 527 | continue; |
73459f73 RM |
528 | } |
529 | } | |
530 | ||
531 | /* Check for arguments that need to be processed */ | |
532 | ||
533 | if (walk_state->arg_count) { | |
534 | /* | |
535 | * There are arguments (complex ones), push Op and | |
536 | * prepare for argument | |
537 | */ | |
4be44fcd LB |
538 | status = acpi_ps_push_scope(parser_state, op, |
539 | walk_state->arg_types, | |
540 | walk_state->arg_count); | |
541 | if (ACPI_FAILURE(status)) { | |
4d0b4af9 MK |
542 | status = |
543 | acpi_ps_complete_op(walk_state, &op, | |
544 | status); | |
545 | if (ACPI_FAILURE(status)) { | |
546 | return_ACPI_STATUS(status); | |
547 | } | |
548 | ||
549 | continue; | |
73459f73 | 550 | } |
4d0b4af9 | 551 | |
73459f73 RM |
552 | op = NULL; |
553 | continue; | |
554 | } | |
555 | ||
556 | /* | |
557 | * All arguments have been processed -- Op is complete, | |
558 | * prepare for next | |
559 | */ | |
4be44fcd LB |
560 | walk_state->op_info = |
561 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
73459f73 | 562 | if (walk_state->op_info->flags & AML_NAMED) { |
941f48bb LM |
563 | if (op->common.aml_opcode == AML_REGION_OP || |
564 | op->common.aml_opcode == AML_DATA_REGION_OP) { | |
73459f73 RM |
565 | /* |
566 | * Skip parsing of control method or opregion body, | |
567 | * because we don't have enough info in the first pass | |
568 | * to parse them correctly. | |
569 | * | |
570 | * Completed parsing an op_region declaration, we now | |
571 | * know the length. | |
572 | */ | |
4be44fcd LB |
573 | op->named.length = |
574 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
575 | } |
576 | } | |
577 | ||
578 | if (walk_state->op_info->flags & AML_CREATE) { | |
579 | /* | |
ba494bee | 580 | * Backup to beginning of create_XXXfield declaration (1 for |
73459f73 RM |
581 | * Opcode) |
582 | * | |
583 | * body_length is unknown until we parse the body | |
584 | */ | |
4be44fcd LB |
585 | op->named.length = |
586 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
587 | } |
588 | ||
ef805d95 LM |
589 | if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
590 | /* | |
591 | * Backup to beginning of bank_field declaration | |
592 | * | |
593 | * body_length is unknown until we parse the body | |
594 | */ | |
595 | op->named.length = | |
596 | (u32) (parser_state->aml - op->named.data); | |
597 | } | |
598 | ||
73459f73 RM |
599 | /* This op complete, notify the dispatcher */ |
600 | ||
601 | if (walk_state->ascending_callback != NULL) { | |
4be44fcd | 602 | walk_state->op = op; |
73459f73 RM |
603 | walk_state->opcode = op->common.aml_opcode; |
604 | ||
4be44fcd LB |
605 | status = walk_state->ascending_callback(walk_state); |
606 | status = | |
607 | acpi_ps_next_parse_state(walk_state, op, status); | |
73459f73 RM |
608 | if (status == AE_CTRL_PENDING) { |
609 | status = AE_OK; | |
73459f73 RM |
610 | } |
611 | } | |
612 | ||
4d0b4af9 MK |
613 | status = acpi_ps_complete_op(walk_state, &op, status); |
614 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 615 | return_ACPI_STATUS(status); |
73459f73 RM |
616 | } |
617 | ||
4be44fcd | 618 | } /* while parser_state->Aml */ |
73459f73 | 619 | |
4d0b4af9 | 620 | status = acpi_ps_complete_final_op(walk_state, op, status); |
4be44fcd | 621 | return_ACPI_STATUS(status); |
73459f73 | 622 | } |