aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/acpi/parser
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/parser')
-rw-r--r--drivers/acpi/parser/Makefile2
-rw-r--r--drivers/acpi/parser/psloop.c775
-rw-r--r--drivers/acpi/parser/psopcode.c28
-rw-r--r--drivers/acpi/parser/psparse.c728
-rw-r--r--drivers/acpi/parser/psutils.c37
5 files changed, 795 insertions, 775 deletions
diff --git a/drivers/acpi/parser/Makefile b/drivers/acpi/parser/Makefile
index bbdd286c660d..db24ee09cf11 100644
--- a/drivers/acpi/parser/Makefile
+++ b/drivers/acpi/parser/Makefile
@@ -2,7 +2,7 @@
2# Makefile for all Linux ACPI interpreter subdirectories 2# Makefile for all Linux ACPI interpreter subdirectories
3# 3#
4 4
5obj-y := psargs.o psparse.o pstree.o pswalk.o \ 5obj-y := psargs.o psparse.o psloop.o pstree.o pswalk.o \
6 psopcode.o psscope.o psutils.o psxface.o 6 psopcode.o psscope.o psutils.o psxface.o
7 7
8EXTRA_CFLAGS += $(ACPI_CFLAGS) 8EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c
new file mode 100644
index 000000000000..decb2e9a049d
--- /dev/null
+++ b/drivers/acpi/parser/psloop.c
@@ -0,0 +1,775 @@
1/******************************************************************************
2 *
3 * Module Name: psloop - Main AML parse loop
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
44
45/*
46 * Parse the AML and build an operation tree as most interpreters,
47 * like Perl, do. Parsing is done by hand rather than with a YACC
48 * generated parser to tightly constrain stack and dynamic memory
49 * usage. At the same time, parsing is kept flexible and the code
50 * fairly compact by parsing based on a list of AML opcode
51 * templates in aml_op_info[]
52 */
53
54#include <acpi/acpi.h>
55#include <acpi/acparser.h>
56#include <acpi/acdispat.h>
57#include <acpi/amlcode.h>
58#include <acpi/acnamesp.h>
59#include <acpi/acinterp.h>
60
61#define _COMPONENT ACPI_PARSER
62 ACPI_MODULE_NAME ("psloop")
63
64static u32 acpi_gbl_depth = 0;
65
66
67/*******************************************************************************
68 *
69 * FUNCTION: acpi_ps_parse_loop
70 *
71 * PARAMETERS: walk_state - Current state
72 *
73 * RETURN: Status
74 *
75 * DESCRIPTION: Parse AML (pointed to by the current parser state) and return
76 * a tree of ops.
77 *
78 ******************************************************************************/
79
80acpi_status
81acpi_ps_parse_loop (
82 struct acpi_walk_state *walk_state)
83{
84 acpi_status status = AE_OK;
85 acpi_status status2;
86 union acpi_parse_object *op = NULL; /* current op */
87 union acpi_parse_object *arg = NULL;
88 union acpi_parse_object *pre_op = NULL;
89 struct acpi_parse_state *parser_state;
90 u8 *aml_op_start = NULL;
91
92
93 ACPI_FUNCTION_TRACE_PTR ("ps_parse_loop", walk_state);
94
95 if (walk_state->descending_callback == NULL) {
96 return_ACPI_STATUS (AE_BAD_PARAMETER);
97 }
98
99 parser_state = &walk_state->parser_state;
100 walk_state->arg_types = 0;
101
102#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
103
104 if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {
105 /* We are restarting a preempted control method */
106
107 if (acpi_ps_has_completed_scope (parser_state)) {
108 /*
109 * We must check if a predicate to an IF or WHILE statement
110 * was just completed
111 */
112 if ((parser_state->scope->parse_scope.op) &&
113 ((parser_state->scope->parse_scope.op->common.aml_opcode == AML_IF_OP) ||
114 (parser_state->scope->parse_scope.op->common.aml_opcode == AML_WHILE_OP)) &&
115 (walk_state->control_state) &&
116 (walk_state->control_state->common.state ==
117 ACPI_CONTROL_PREDICATE_EXECUTING)) {
118 /*
119 * A predicate was just completed, get the value of the
120 * predicate and branch based on that value
121 */
122 walk_state->op = NULL;
123 status = acpi_ds_get_predicate_value (walk_state, ACPI_TO_POINTER (TRUE));
124 if (ACPI_FAILURE (status) &&
125 ((status & AE_CODE_MASK) != AE_CODE_CONTROL)) {
126 if (status == AE_AML_NO_RETURN_VALUE) {
127 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
128 "Invoked method did not return a value, %s\n",
129 acpi_format_exception (status)));
130
131 }
132 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
133 "get_predicate Failed, %s\n",
134 acpi_format_exception (status)));
135 return_ACPI_STATUS (status);
136 }
137
138 status = acpi_ps_next_parse_state (walk_state, op, status);
139 }
140
141 acpi_ps_pop_scope (parser_state, &op,
142 &walk_state->arg_types, &walk_state->arg_count);
143 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op));
144 }
145 else if (walk_state->prev_op) {
146 /* We were in the middle of an op */
147
148 op = walk_state->prev_op;
149 walk_state->arg_types = walk_state->prev_arg_types;
150 }
151 }
152#endif
153
154 /* Iterative parsing loop, while there is more AML to process: */
155
156 while ((parser_state->aml < parser_state->aml_end) || (op)) {
157 aml_op_start = parser_state->aml;
158 if (!op) {
159 /* Get the next opcode from the AML stream */
160
161 walk_state->aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml,
162 parser_state->aml_start);
163 walk_state->opcode = acpi_ps_peek_opcode (parser_state);
164
165 /*
166 * First cut to determine what we have found:
167 * 1) A valid AML opcode
168 * 2) A name string
169 * 3) An unknown/invalid opcode
170 */
171 walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode);
172 switch (walk_state->op_info->class) {
173 case AML_CLASS_ASCII:
174 case AML_CLASS_PREFIX:
175 /*
176 * Starts with a valid prefix or ASCII char, this is a name
177 * string. Convert the bare name string to a namepath.
178 */
179 walk_state->opcode = AML_INT_NAMEPATH_OP;
180 walk_state->arg_types = ARGP_NAMESTRING;
181 break;
182
183 case AML_CLASS_UNKNOWN:
184
185 /* The opcode is unrecognized. Just skip unknown opcodes */
186
187 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
188 "Found unknown opcode %X at AML address %p offset %X, ignoring\n",
189 walk_state->opcode, parser_state->aml, walk_state->aml_offset));
190
191 ACPI_DUMP_BUFFER (parser_state->aml, 128);
192
193 /* Assume one-byte bad opcode */
194
195 parser_state->aml++;
196 continue;
197
198 default:
199
200 /* Found opcode info, this is a normal opcode */
201
202 parser_state->aml += acpi_ps_get_opcode_size (walk_state->opcode);
203 walk_state->arg_types = walk_state->op_info->parse_args;
204 break;
205 }
206
207 /* Create Op structure and append to parent's argument list */
208
209 if (walk_state->op_info->flags & AML_NAMED) {
210 /* Allocate a new pre_op if necessary */
211
212 if (!pre_op) {
213 pre_op = acpi_ps_alloc_op (walk_state->opcode);
214 if (!pre_op) {
215 status = AE_NO_MEMORY;
216 goto close_this_op;
217 }
218 }
219
220 pre_op->common.value.arg = NULL;
221 pre_op->common.aml_opcode = walk_state->opcode;
222
223 /*
224 * Get and append arguments until we find the node that contains
225 * the name (the type ARGP_NAME).
226 */
227 while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) &&
228 (GET_CURRENT_ARG_TYPE (walk_state->arg_types) != ARGP_NAME)) {
229 status = acpi_ps_get_next_arg (walk_state, parser_state,
230 GET_CURRENT_ARG_TYPE (walk_state->arg_types), &arg);
231 if (ACPI_FAILURE (status)) {
232 goto close_this_op;
233 }
234
235 acpi_ps_append_arg (pre_op, arg);
236 INCREMENT_ARG_LIST (walk_state->arg_types);
237 }
238
239 /*
240 * Make sure that we found a NAME and didn't run out of
241 * arguments
242 */
243 if (!GET_CURRENT_ARG_TYPE (walk_state->arg_types)) {
244 status = AE_AML_NO_OPERAND;
245 goto close_this_op;
246 }
247
248 /* We know that this arg is a name, move to next arg */
249
250 INCREMENT_ARG_LIST (walk_state->arg_types);
251
252 /*
253 * Find the object. This will either insert the object into
254 * the namespace or simply look it up
255 */
256 walk_state->op = NULL;
257
258 status = walk_state->descending_callback (walk_state, &op);
259 if (ACPI_FAILURE (status)) {
260 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
261 "During name lookup/catalog, %s\n",
262 acpi_format_exception (status)));
263 goto close_this_op;
264 }
265
266 if (!op) {
267 continue;
268 }
269
270 status = acpi_ps_next_parse_state (walk_state, op, status);
271 if (status == AE_CTRL_PENDING) {
272 status = AE_OK;
273 goto close_this_op;
274 }
275
276 if (ACPI_FAILURE (status)) {
277 goto close_this_op;
278 }
279
280 acpi_ps_append_arg (op, pre_op->common.value.arg);
281 acpi_gbl_depth++;
282
283 if (op->common.aml_opcode == AML_REGION_OP) {
284 /*
285 * Defer final parsing of an operation_region body,
286 * because we don't have enough info in the first pass
287 * to parse it correctly (i.e., there may be method
288 * calls within the term_arg elements of the body.)
289 *
290 * However, we must continue parsing because
291 * the opregion is not a standalone package --
292 * we don't know where the end is at this point.
293 *
294 * (Length is unknown until parse of the body complete)
295 */
296 op->named.data = aml_op_start;
297 op->named.length = 0;
298 }
299 }
300 else {
301 /* Not a named opcode, just allocate Op and append to parent */
302
303 walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode);
304 op = acpi_ps_alloc_op (walk_state->opcode);
305 if (!op) {
306 status = AE_NO_MEMORY;
307 goto close_this_op;
308 }
309
310 if (walk_state->op_info->flags & AML_CREATE) {
311 /*
312 * Backup to beginning of create_xXXfield declaration
313 * body_length is unknown until we parse the body
314 */
315 op->named.data = aml_op_start;
316 op->named.length = 0;
317 }
318
319 acpi_ps_append_arg (acpi_ps_get_parent_scope (parser_state), op);
320
321 if ((walk_state->descending_callback != NULL)) {
322 /*
323 * Find the object. This will either insert the object into
324 * the namespace or simply look it up
325 */
326 walk_state->op = op;
327
328 status = walk_state->descending_callback (walk_state, &op);
329 status = acpi_ps_next_parse_state (walk_state, op, status);
330 if (status == AE_CTRL_PENDING) {
331 status = AE_OK;
332 goto close_this_op;
333 }
334
335 if (ACPI_FAILURE (status)) {
336 goto close_this_op;
337 }
338 }
339 }
340
341 op->common.aml_offset = walk_state->aml_offset;
342
343 if (walk_state->op_info) {
344 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
345 "Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n",
346 (u32) op->common.aml_opcode, walk_state->op_info->name,
347 op, parser_state->aml, op->common.aml_offset));
348 }
349 }
350
351
352 /*
353 * Start arg_count at zero because we don't know if there are
354 * any args yet
355 */
356 walk_state->arg_count = 0;
357
358 /* Are there any arguments that must be processed? */
359
360 if (walk_state->arg_types) {
361 /* Get arguments */
362
363 switch (op->common.aml_opcode) {
364 case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
365 case AML_WORD_OP: /* AML_WORDDATA_ARG */
366 case AML_DWORD_OP: /* AML_DWORDATA_ARG */
367 case AML_QWORD_OP: /* AML_QWORDATA_ARG */
368 case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */
369
370 /* Fill in constant or string argument directly */
371
372 acpi_ps_get_next_simple_arg (parser_state,
373 GET_CURRENT_ARG_TYPE (walk_state->arg_types), op);
374 break;
375
376 case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */
377
378 status = acpi_ps_get_next_namepath (walk_state, parser_state, op, 1);
379 if (ACPI_FAILURE (status)) {
380 goto close_this_op;
381 }
382
383 walk_state->arg_types = 0;
384 break;
385
386 default:
387 /*
388 * Op is not a constant or string, append each argument
389 * to the Op
390 */
391 while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) &&
392 !walk_state->arg_count) {
393 walk_state->aml_offset = (u32)
394 ACPI_PTR_DIFF (parser_state->aml, parser_state->aml_start);
395
396 status = acpi_ps_get_next_arg (walk_state, parser_state,
397 GET_CURRENT_ARG_TYPE (walk_state->arg_types),
398 &arg);
399 if (ACPI_FAILURE (status)) {
400 goto close_this_op;
401 }
402
403 if (arg) {
404 arg->common.aml_offset = walk_state->aml_offset;
405 acpi_ps_append_arg (op, arg);
406 }
407 INCREMENT_ARG_LIST (walk_state->arg_types);
408 }
409
410 /* Special processing for certain opcodes */
411
412 if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS1) &&
413 ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) {
414 /*
415 * We want to skip If/Else/While constructs during Pass1
416 * because we want to actually conditionally execute the
417 * code during Pass2.
418 *
419 * Except for disassembly, where we always want to
420 * walk the If/Else/While packages
421 */
422 switch (op->common.aml_opcode) {
423 case AML_IF_OP:
424 case AML_ELSE_OP:
425 case AML_WHILE_OP:
426
427 /* Skip body of if/else/while in pass 1 */
428
429 parser_state->aml = parser_state->pkg_end;
430 walk_state->arg_count = 0;
431 break;
432
433 default:
434 break;
435 }
436 }
437
438 switch (op->common.aml_opcode) {
439 case AML_METHOD_OP:
440
441 /*
442 * Skip parsing of control method
443 * because we don't have enough info in the first pass
444 * to parse it correctly.
445 *
446 * Save the length and address of the body
447 */
448 op->named.data = parser_state->aml;
449 op->named.length = (u32) (parser_state->pkg_end -
450 parser_state->aml);
451
452 /* Skip body of method */
453
454 parser_state->aml = parser_state->pkg_end;
455 walk_state->arg_count = 0;
456 break;
457
458 case AML_BUFFER_OP:
459 case AML_PACKAGE_OP:
460 case AML_VAR_PACKAGE_OP:
461
462 if ((op->common.parent) &&
463 (op->common.parent->common.aml_opcode == AML_NAME_OP) &&
464 (walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2)) {
465 /*
466 * Skip parsing of Buffers and Packages
467 * because we don't have enough info in the first pass
468 * to parse them correctly.
469 */
470 op->named.data = aml_op_start;
471 op->named.length = (u32) (parser_state->pkg_end -
472 aml_op_start);
473
474 /* Skip body */
475
476 parser_state->aml = parser_state->pkg_end;
477 walk_state->arg_count = 0;
478 }
479 break;
480
481 case AML_WHILE_OP:
482
483 if (walk_state->control_state) {
484 walk_state->control_state->control.package_end =
485 parser_state->pkg_end;
486 }
487 break;
488
489 default:
490
491 /* No action for all other opcodes */
492 break;
493 }
494 break;
495 }
496 }
497
498 /* Check for arguments that need to be processed */
499
500 if (walk_state->arg_count) {
501 /*
502 * There are arguments (complex ones), push Op and
503 * prepare for argument
504 */
505 status = acpi_ps_push_scope (parser_state, op,
506 walk_state->arg_types, walk_state->arg_count);
507 if (ACPI_FAILURE (status)) {
508 goto close_this_op;
509 }
510 op = NULL;
511 continue;
512 }
513
514 /*
515 * All arguments have been processed -- Op is complete,
516 * prepare for next
517 */
518 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
519 if (walk_state->op_info->flags & AML_NAMED) {
520 if (acpi_gbl_depth) {
521 acpi_gbl_depth--;
522 }
523
524 if (op->common.aml_opcode == AML_REGION_OP) {
525 /*
526 * Skip parsing of control method or opregion body,
527 * because we don't have enough info in the first pass
528 * to parse them correctly.
529 *
530 * Completed parsing an op_region declaration, we now
531 * know the length.
532 */
533 op->named.length = (u32) (parser_state->aml - op->named.data);
534 }
535 }
536
537 if (walk_state->op_info->flags & AML_CREATE) {
538 /*
539 * Backup to beginning of create_xXXfield declaration (1 for
540 * Opcode)
541 *
542 * body_length is unknown until we parse the body
543 */
544 op->named.length = (u32) (parser_state->aml - op->named.data);
545 }
546
547 /* This op complete, notify the dispatcher */
548
549 if (walk_state->ascending_callback != NULL) {
550 walk_state->op = op;
551 walk_state->opcode = op->common.aml_opcode;
552
553 status = walk_state->ascending_callback (walk_state);
554 status = acpi_ps_next_parse_state (walk_state, op, status);
555 if (status == AE_CTRL_PENDING) {
556 status = AE_OK;
557 goto close_this_op;
558 }
559 }
560
561
562close_this_op:
563 /*
564 * Finished one argument of the containing scope
565 */
566 parser_state->scope->parse_scope.arg_count--;
567
568 /* Finished with pre_op */
569
570 if (pre_op) {
571 acpi_ps_free_op (pre_op);
572 pre_op = NULL;
573 }
574
575 /* Close this Op (will result in parse subtree deletion) */
576
577 status2 = acpi_ps_complete_this_op (walk_state, op);
578 if (ACPI_FAILURE (status2)) {
579 return_ACPI_STATUS (status2);
580 }
581 op = NULL;
582
583 switch (status) {
584 case AE_OK:
585 break;
586
587
588 case AE_CTRL_TRANSFER:
589
590 /* We are about to transfer to a called method. */
591
592 walk_state->prev_op = op;
593 walk_state->prev_arg_types = walk_state->arg_types;
594 return_ACPI_STATUS (status);
595
596
597 case AE_CTRL_END:
598
599 acpi_ps_pop_scope (parser_state, &op,
600 &walk_state->arg_types, &walk_state->arg_count);
601
602 if (op) {
603 walk_state->op = op;
604 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
605 walk_state->opcode = op->common.aml_opcode;
606
607 status = walk_state->ascending_callback (walk_state);
608 status = acpi_ps_next_parse_state (walk_state, op, status);
609
610 status2 = acpi_ps_complete_this_op (walk_state, op);
611 if (ACPI_FAILURE (status2)) {
612 return_ACPI_STATUS (status2);
613 }
614 op = NULL;
615 }
616 status = AE_OK;
617 break;
618
619
620 case AE_CTRL_BREAK:
621 case AE_CTRL_CONTINUE:
622
623 /* Pop off scopes until we find the While */
624
625 while (!op || (op->common.aml_opcode != AML_WHILE_OP)) {
626 acpi_ps_pop_scope (parser_state, &op,
627 &walk_state->arg_types, &walk_state->arg_count);
628 }
629
630 /* Close this iteration of the While loop */
631
632 walk_state->op = op;
633 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
634 walk_state->opcode = op->common.aml_opcode;
635
636 status = walk_state->ascending_callback (walk_state);
637 status = acpi_ps_next_parse_state (walk_state, op, status);
638
639 status2 = acpi_ps_complete_this_op (walk_state, op);
640 if (ACPI_FAILURE (status2)) {
641 return_ACPI_STATUS (status2);
642 }
643 op = NULL;
644
645 status = AE_OK;
646 break;
647
648
649 case AE_CTRL_TERMINATE:
650
651 status = AE_OK;
652
653 /* Clean up */
654 do {
655 if (op) {
656 status2 = acpi_ps_complete_this_op (walk_state, op);
657 if (ACPI_FAILURE (status2)) {
658 return_ACPI_STATUS (status2);
659 }
660 }
661 acpi_ps_pop_scope (parser_state, &op,
662 &walk_state->arg_types, &walk_state->arg_count);
663
664 } while (op);
665
666 return_ACPI_STATUS (status);
667
668
669 default: /* All other non-AE_OK status */
670
671 do {
672 if (op) {
673 status2 = acpi_ps_complete_this_op (walk_state, op);
674 if (ACPI_FAILURE (status2)) {
675 return_ACPI_STATUS (status2);
676 }
677 }
678 acpi_ps_pop_scope (parser_state, &op,
679 &walk_state->arg_types, &walk_state->arg_count);
680
681 } while (op);
682
683
684 /*
685 * TBD: Cleanup parse ops on error
686 */
687#if 0
688 if (op == NULL) {
689 acpi_ps_pop_scope (parser_state, &op,
690 &walk_state->arg_types, &walk_state->arg_count);
691 }
692#endif
693 walk_state->prev_op = op;
694 walk_state->prev_arg_types = walk_state->arg_types;
695 return_ACPI_STATUS (status);
696 }
697
698 /* This scope complete? */
699
700 if (acpi_ps_has_completed_scope (parser_state)) {
701 acpi_ps_pop_scope (parser_state, &op,
702 &walk_state->arg_types, &walk_state->arg_count);
703 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op));
704 }
705 else {
706 op = NULL;
707 }
708
709 } /* while parser_state->Aml */
710
711
712 /*
713 * Complete the last Op (if not completed), and clear the scope stack.
714 * It is easily possible to end an AML "package" with an unbounded number
715 * of open scopes (such as when several ASL blocks are closed with
716 * sequential closing braces). We want to terminate each one cleanly.
717 */
718 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", op));
719 do {
720 if (op) {
721 if (walk_state->ascending_callback != NULL) {
722 walk_state->op = op;
723 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
724 walk_state->opcode = op->common.aml_opcode;
725
726 status = walk_state->ascending_callback (walk_state);
727 status = acpi_ps_next_parse_state (walk_state, op, status);
728 if (status == AE_CTRL_PENDING) {
729 status = AE_OK;
730 goto close_this_op;
731 }
732
733 if (status == AE_CTRL_TERMINATE) {
734 status = AE_OK;
735
736 /* Clean up */
737 do {
738 if (op) {
739 status2 = acpi_ps_complete_this_op (walk_state, op);
740 if (ACPI_FAILURE (status2)) {
741 return_ACPI_STATUS (status2);
742 }
743 }
744
745 acpi_ps_pop_scope (parser_state, &op,
746 &walk_state->arg_types, &walk_state->arg_count);
747
748 } while (op);
749
750 return_ACPI_STATUS (status);
751 }
752
753 else if (ACPI_FAILURE (status)) {
754 /* First error is most important */
755
756 (void) acpi_ps_complete_this_op (walk_state, op);
757 return_ACPI_STATUS (status);
758 }
759 }
760
761 status2 = acpi_ps_complete_this_op (walk_state, op);
762 if (ACPI_FAILURE (status2)) {
763 return_ACPI_STATUS (status2);
764 }
765 }
766
767 acpi_ps_pop_scope (parser_state, &op, &walk_state->arg_types,
768 &walk_state->arg_count);
769
770 } while (op);
771
772 return_ACPI_STATUS (status);
773}
774
775
diff --git a/drivers/acpi/parser/psopcode.c b/drivers/acpi/parser/psopcode.c
index 95ef5e8947a8..6f7594a516d2 100644
--- a/drivers/acpi/parser/psopcode.c
+++ b/drivers/acpi/parser/psopcode.c
@@ -428,33 +428,23 @@ acpi_ps_get_opcode_info (
428 /* 428 /*
429 * Detect normal 8-bit opcode or extended 16-bit opcode 429 * Detect normal 8-bit opcode or extended 16-bit opcode
430 */ 430 */
431 switch ((u8) (opcode >> 8)) { 431 if (!(opcode & 0xFF00)) {
432 case 0:
433
434 /* Simple (8-bit) opcode: 0-255, can't index beyond table */ 432 /* Simple (8-bit) opcode: 0-255, can't index beyond table */
435 433
436 return (&acpi_gbl_aml_op_info [acpi_gbl_short_op_index [(u8) opcode]]); 434 return (&acpi_gbl_aml_op_info [acpi_gbl_short_op_index [(u8) opcode]]);
435 }
437 436
438 case AML_EXTOP: 437 if (((opcode & 0xFF00) == AML_EXTENDED_OPCODE) &&
439 438 (((u8) opcode) <= MAX_EXTENDED_OPCODE)) {
440 /* Extended (16-bit, prefix+opcode) opcode */ 439 /* Valid extended (16-bit) opcode */
441
442 if (((u8) opcode) <= MAX_EXTENDED_OPCODE) {
443 return (&acpi_gbl_aml_op_info [acpi_gbl_long_op_index [(u8) opcode]]);
444 }
445
446 /* Else fall through to error case below */
447 /*lint -fallthrough */
448
449 default:
450 440
451 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 441 return (&acpi_gbl_aml_op_info [acpi_gbl_long_op_index [(u8) opcode]]);
452 "Unknown AML opcode [%4.4X]\n", opcode));
453 break;
454 } 442 }
455 443
444 /* Unknown AML opcode */
456 445
457 /* Default is "unknown opcode" */ 446 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
447 "Unknown AML opcode [%4.4X]\n", opcode));
458 448
459 return (&acpi_gbl_aml_op_info [_UNK]); 449 return (&acpi_gbl_aml_op_info [_UNK]);
460} 450}
diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c
index bdbe0d99486f..16b84a3d0436 100644
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/parser/psparse.c
@@ -62,26 +62,6 @@
62 ACPI_MODULE_NAME ("psparse") 62 ACPI_MODULE_NAME ("psparse")
63 63
64 64
65static u32 acpi_gbl_depth = 0;
66
67/* Local prototypes */
68
69static acpi_status
70acpi_ps_complete_this_op (
71 struct acpi_walk_state *walk_state,
72 union acpi_parse_object *op);
73
74static acpi_status
75acpi_ps_next_parse_state (
76 struct acpi_walk_state *walk_state,
77 union acpi_parse_object *op,
78 acpi_status callback_status);
79
80static acpi_status
81acpi_ps_parse_loop (
82 struct acpi_walk_state *walk_state);
83
84
85/******************************************************************************* 65/*******************************************************************************
86 * 66 *
87 * FUNCTION: acpi_ps_get_opcode_size 67 * FUNCTION: acpi_ps_get_opcode_size
@@ -134,8 +114,8 @@ acpi_ps_peek_opcode (
134 aml = parser_state->aml; 114 aml = parser_state->aml;
135 opcode = (u16) ACPI_GET8 (aml); 115 opcode = (u16) ACPI_GET8 (aml);
136 116
137 if (opcode == AML_EXTOP) { 117 if (opcode == AML_EXTENDED_OP_PREFIX) {
138 /* Extended opcode */ 118 /* Extended opcode, get the second opcode byte */
139 119
140 aml++; 120 aml++;
141 opcode = (u16) ((opcode << 8) | ACPI_GET8 (aml)); 121 opcode = (u16) ((opcode << 8) | ACPI_GET8 (aml));
@@ -158,7 +138,7 @@ acpi_ps_peek_opcode (
158 * 138 *
159 ******************************************************************************/ 139 ******************************************************************************/
160 140
161static acpi_status 141acpi_status
162acpi_ps_complete_this_op ( 142acpi_ps_complete_this_op (
163 struct acpi_walk_state *walk_state, 143 struct acpi_walk_state *walk_state,
164 union acpi_parse_object *op) 144 union acpi_parse_object *op)
@@ -331,7 +311,7 @@ allocate_error:
331 * 311 *
332 ******************************************************************************/ 312 ******************************************************************************/
333 313
334static acpi_status 314acpi_status
335acpi_ps_next_parse_state ( 315acpi_ps_next_parse_state (
336 struct acpi_walk_state *walk_state, 316 struct acpi_walk_state *walk_state,
337 union acpi_parse_object *op, 317 union acpi_parse_object *op,
@@ -441,706 +421,6 @@ acpi_ps_next_parse_state (
441 421
442/******************************************************************************* 422/*******************************************************************************
443 * 423 *
444 * FUNCTION: acpi_ps_parse_loop
445 *
446 * PARAMETERS: walk_state - Current state
447 *
448 * RETURN: Status
449 *
450 * DESCRIPTION: Parse AML (pointed to by the current parser state) and return
451 * a tree of ops.
452 *
453 ******************************************************************************/
454
455static acpi_status
456acpi_ps_parse_loop (
457 struct acpi_walk_state *walk_state)
458{
459 acpi_status status = AE_OK;
460 acpi_status status2;
461 union acpi_parse_object *op = NULL; /* current op */
462 union acpi_parse_object *arg = NULL;
463 union acpi_parse_object *pre_op = NULL;
464 struct acpi_parse_state *parser_state;
465 u8 *aml_op_start = NULL;
466
467
468 ACPI_FUNCTION_TRACE_PTR ("ps_parse_loop", walk_state);
469
470 if (walk_state->descending_callback == NULL) {
471 return_ACPI_STATUS (AE_BAD_PARAMETER);
472 }
473
474 parser_state = &walk_state->parser_state;
475 walk_state->arg_types = 0;
476
477#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
478
479 if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {
480 /* We are restarting a preempted control method */
481
482 if (acpi_ps_has_completed_scope (parser_state)) {
483 /*
484 * We must check if a predicate to an IF or WHILE statement
485 * was just completed
486 */
487 if ((parser_state->scope->parse_scope.op) &&
488 ((parser_state->scope->parse_scope.op->common.aml_opcode == AML_IF_OP) ||
489 (parser_state->scope->parse_scope.op->common.aml_opcode == AML_WHILE_OP)) &&
490 (walk_state->control_state) &&
491 (walk_state->control_state->common.state ==
492 ACPI_CONTROL_PREDICATE_EXECUTING)) {
493 /*
494 * A predicate was just completed, get the value of the
495 * predicate and branch based on that value
496 */
497 walk_state->op = NULL;
498 status = acpi_ds_get_predicate_value (walk_state, ACPI_TO_POINTER (TRUE));
499 if (ACPI_FAILURE (status) &&
500 ((status & AE_CODE_MASK) != AE_CODE_CONTROL)) {
501 if (status == AE_AML_NO_RETURN_VALUE) {
502 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
503 "Invoked method did not return a value, %s\n",
504 acpi_format_exception (status)));
505
506 }
507 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
508 "get_predicate Failed, %s\n",
509 acpi_format_exception (status)));
510 return_ACPI_STATUS (status);
511 }
512
513 status = acpi_ps_next_parse_state (walk_state, op, status);
514 }
515
516 acpi_ps_pop_scope (parser_state, &op,
517 &walk_state->arg_types, &walk_state->arg_count);
518 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op));
519 }
520 else if (walk_state->prev_op) {
521 /* We were in the middle of an op */
522
523 op = walk_state->prev_op;
524 walk_state->arg_types = walk_state->prev_arg_types;
525 }
526 }
527#endif
528
529 /* Iterative parsing loop, while there is more AML to process: */
530
531 while ((parser_state->aml < parser_state->aml_end) || (op)) {
532 aml_op_start = parser_state->aml;
533 if (!op) {
534 /* Get the next opcode from the AML stream */
535
536 walk_state->aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml,
537 parser_state->aml_start);
538 walk_state->opcode = acpi_ps_peek_opcode (parser_state);
539
540 /*
541 * First cut to determine what we have found:
542 * 1) A valid AML opcode
543 * 2) A name string
544 * 3) An unknown/invalid opcode
545 */
546 walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode);
547 switch (walk_state->op_info->class) {
548 case AML_CLASS_ASCII:
549 case AML_CLASS_PREFIX:
550 /*
551 * Starts with a valid prefix or ASCII char, this is a name
552 * string. Convert the bare name string to a namepath.
553 */
554 walk_state->opcode = AML_INT_NAMEPATH_OP;
555 walk_state->arg_types = ARGP_NAMESTRING;
556 break;
557
558 case AML_CLASS_UNKNOWN:
559
560 /* The opcode is unrecognized. Just skip unknown opcodes */
561
562 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
563 "Found unknown opcode %X at AML address %p offset %X, ignoring\n",
564 walk_state->opcode, parser_state->aml, walk_state->aml_offset));
565
566 ACPI_DUMP_BUFFER (parser_state->aml, 128);
567
568 /* Assume one-byte bad opcode */
569
570 parser_state->aml++;
571 continue;
572
573 default:
574
575 /* Found opcode info, this is a normal opcode */
576
577 parser_state->aml += acpi_ps_get_opcode_size (walk_state->opcode);
578 walk_state->arg_types = walk_state->op_info->parse_args;
579 break;
580 }
581
582 /* Create Op structure and append to parent's argument list */
583
584 if (walk_state->op_info->flags & AML_NAMED) {
585 /* Allocate a new pre_op if necessary */
586
587 if (!pre_op) {
588 pre_op = acpi_ps_alloc_op (walk_state->opcode);
589 if (!pre_op) {
590 status = AE_NO_MEMORY;
591 goto close_this_op;
592 }
593 }
594
595 pre_op->common.value.arg = NULL;
596 pre_op->common.aml_opcode = walk_state->opcode;
597
598 /*
599 * Get and append arguments until we find the node that contains
600 * the name (the type ARGP_NAME).
601 */
602 while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) &&
603 (GET_CURRENT_ARG_TYPE (walk_state->arg_types) != ARGP_NAME)) {
604 status = acpi_ps_get_next_arg (walk_state, parser_state,
605 GET_CURRENT_ARG_TYPE (walk_state->arg_types), &arg);
606 if (ACPI_FAILURE (status)) {
607 goto close_this_op;
608 }
609
610 acpi_ps_append_arg (pre_op, arg);
611 INCREMENT_ARG_LIST (walk_state->arg_types);
612 }
613
614 /*
615 * Make sure that we found a NAME and didn't run out of
616 * arguments
617 */
618 if (!GET_CURRENT_ARG_TYPE (walk_state->arg_types)) {
619 status = AE_AML_NO_OPERAND;
620 goto close_this_op;
621 }
622
623 /* We know that this arg is a name, move to next arg */
624
625 INCREMENT_ARG_LIST (walk_state->arg_types);
626
627 /*
628 * Find the object. This will either insert the object into
629 * the namespace or simply look it up
630 */
631 walk_state->op = NULL;
632
633 status = walk_state->descending_callback (walk_state, &op);
634 if (ACPI_FAILURE (status)) {
635 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
636 "During name lookup/catalog, %s\n",
637 acpi_format_exception (status)));
638 goto close_this_op;
639 }
640
641 if (!op) {
642 continue;
643 }
644
645 status = acpi_ps_next_parse_state (walk_state, op, status);
646 if (status == AE_CTRL_PENDING) {
647 status = AE_OK;
648 goto close_this_op;
649 }
650
651 if (ACPI_FAILURE (status)) {
652 goto close_this_op;
653 }
654
655 acpi_ps_append_arg (op, pre_op->common.value.arg);
656 acpi_gbl_depth++;
657
658 if (op->common.aml_opcode == AML_REGION_OP) {
659 /*
660 * Defer final parsing of an operation_region body,
661 * because we don't have enough info in the first pass
662 * to parse it correctly (i.e., there may be method
663 * calls within the term_arg elements of the body.)
664 *
665 * However, we must continue parsing because
666 * the opregion is not a standalone package --
667 * we don't know where the end is at this point.
668 *
669 * (Length is unknown until parse of the body complete)
670 */
671 op->named.data = aml_op_start;
672 op->named.length = 0;
673 }
674 }
675 else {
676 /* Not a named opcode, just allocate Op and append to parent */
677
678 walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode);
679 op = acpi_ps_alloc_op (walk_state->opcode);
680 if (!op) {
681 status = AE_NO_MEMORY;
682 goto close_this_op;
683 }
684
685 if (walk_state->op_info->flags & AML_CREATE) {
686 /*
687 * Backup to beginning of create_xXXfield declaration
688 * body_length is unknown until we parse the body
689 */
690 op->named.data = aml_op_start;
691 op->named.length = 0;
692 }
693
694 acpi_ps_append_arg (acpi_ps_get_parent_scope (parser_state), op);
695
696 if ((walk_state->descending_callback != NULL)) {
697 /*
698 * Find the object. This will either insert the object into
699 * the namespace or simply look it up
700 */
701 walk_state->op = op;
702
703 status = walk_state->descending_callback (walk_state, &op);
704 status = acpi_ps_next_parse_state (walk_state, op, status);
705 if (status == AE_CTRL_PENDING) {
706 status = AE_OK;
707 goto close_this_op;
708 }
709
710 if (ACPI_FAILURE (status)) {
711 goto close_this_op;
712 }
713 }
714 }
715
716 op->common.aml_offset = walk_state->aml_offset;
717
718 if (walk_state->op_info) {
719 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
720 "Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n",
721 (u32) op->common.aml_opcode, walk_state->op_info->name,
722 op, parser_state->aml, op->common.aml_offset));
723 }
724 }
725
726
727 /*
728 * Start arg_count at zero because we don't know if there are
729 * any args yet
730 */
731 walk_state->arg_count = 0;
732
733 /* Are there any arguments that must be processed? */
734
735 if (walk_state->arg_types) {
736 /* Get arguments */
737
738 switch (op->common.aml_opcode) {
739 case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
740 case AML_WORD_OP: /* AML_WORDDATA_ARG */
741 case AML_DWORD_OP: /* AML_DWORDATA_ARG */
742 case AML_QWORD_OP: /* AML_QWORDATA_ARG */
743 case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */
744
745 /* Fill in constant or string argument directly */
746
747 acpi_ps_get_next_simple_arg (parser_state,
748 GET_CURRENT_ARG_TYPE (walk_state->arg_types), op);
749 break;
750
751 case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */
752
753 status = acpi_ps_get_next_namepath (walk_state, parser_state, op, 1);
754 if (ACPI_FAILURE (status)) {
755 goto close_this_op;
756 }
757
758 walk_state->arg_types = 0;
759 break;
760
761 default:
762 /*
763 * Op is not a constant or string, append each argument
764 * to the Op
765 */
766 while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) &&
767 !walk_state->arg_count) {
768 walk_state->aml_offset = (u32)
769 ACPI_PTR_DIFF (parser_state->aml, parser_state->aml_start);
770
771 status = acpi_ps_get_next_arg (walk_state, parser_state,
772 GET_CURRENT_ARG_TYPE (walk_state->arg_types),
773 &arg);
774 if (ACPI_FAILURE (status)) {
775 goto close_this_op;
776 }
777
778 if (arg) {
779 arg->common.aml_offset = walk_state->aml_offset;
780 acpi_ps_append_arg (op, arg);
781 }
782 INCREMENT_ARG_LIST (walk_state->arg_types);
783 }
784
785 /* Special processing for certain opcodes */
786
787 if (walk_state->pass_number <= ACPI_IMODE_LOAD_PASS1) {
788 switch (op->common.aml_opcode) {
789 case AML_IF_OP:
790 case AML_ELSE_OP:
791 case AML_WHILE_OP:
792
793 /* Skip body of if/else/while in pass 1 */
794
795 parser_state->aml = parser_state->pkg_end;
796 walk_state->arg_count = 0;
797 break;
798
799 default:
800 break;
801 }
802 }
803
804 switch (op->common.aml_opcode) {
805 case AML_METHOD_OP:
806
807 /*
808 * Skip parsing of control method
809 * because we don't have enough info in the first pass
810 * to parse it correctly.
811 *
812 * Save the length and address of the body
813 */
814 op->named.data = parser_state->aml;
815 op->named.length = (u32) (parser_state->pkg_end -
816 parser_state->aml);
817
818 /* Skip body of method */
819
820 parser_state->aml = parser_state->pkg_end;
821 walk_state->arg_count = 0;
822 break;
823
824 case AML_BUFFER_OP:
825 case AML_PACKAGE_OP:
826 case AML_VAR_PACKAGE_OP:
827
828 if ((op->common.parent) &&
829 (op->common.parent->common.aml_opcode == AML_NAME_OP) &&
830 (walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2)) {
831 /*
832 * Skip parsing of Buffers and Packages
833 * because we don't have enough info in the first pass
834 * to parse them correctly.
835 */
836 op->named.data = aml_op_start;
837 op->named.length = (u32) (parser_state->pkg_end -
838 aml_op_start);
839
840 /* Skip body */
841
842 parser_state->aml = parser_state->pkg_end;
843 walk_state->arg_count = 0;
844 }
845 break;
846
847 case AML_WHILE_OP:
848
849 if (walk_state->control_state) {
850 walk_state->control_state->control.package_end =
851 parser_state->pkg_end;
852 }
853 break;
854
855 default:
856
857 /* No action for all other opcodes */
858 break;
859 }
860 break;
861 }
862 }
863
864 /* Check for arguments that need to be processed */
865
866 if (walk_state->arg_count) {
867 /*
868 * There are arguments (complex ones), push Op and
869 * prepare for argument
870 */
871 status = acpi_ps_push_scope (parser_state, op,
872 walk_state->arg_types, walk_state->arg_count);
873 if (ACPI_FAILURE (status)) {
874 goto close_this_op;
875 }
876 op = NULL;
877 continue;
878 }
879
880 /*
881 * All arguments have been processed -- Op is complete,
882 * prepare for next
883 */
884 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
885 if (walk_state->op_info->flags & AML_NAMED) {
886 if (acpi_gbl_depth) {
887 acpi_gbl_depth--;
888 }
889
890 if (op->common.aml_opcode == AML_REGION_OP) {
891 /*
892 * Skip parsing of control method or opregion body,
893 * because we don't have enough info in the first pass
894 * to parse them correctly.
895 *
896 * Completed parsing an op_region declaration, we now
897 * know the length.
898 */
899 op->named.length = (u32) (parser_state->aml - op->named.data);
900 }
901 }
902
903 if (walk_state->op_info->flags & AML_CREATE) {
904 /*
905 * Backup to beginning of create_xXXfield declaration (1 for
906 * Opcode)
907 *
908 * body_length is unknown until we parse the body
909 */
910 op->named.length = (u32) (parser_state->aml - op->named.data);
911 }
912
913 /* This op complete, notify the dispatcher */
914
915 if (walk_state->ascending_callback != NULL) {
916 walk_state->op = op;
917 walk_state->opcode = op->common.aml_opcode;
918
919 status = walk_state->ascending_callback (walk_state);
920 status = acpi_ps_next_parse_state (walk_state, op, status);
921 if (status == AE_CTRL_PENDING) {
922 status = AE_OK;
923 goto close_this_op;
924 }
925 }
926
927
928close_this_op:
929 /*
930 * Finished one argument of the containing scope
931 */
932 parser_state->scope->parse_scope.arg_count--;
933
934 /* Finished with pre_op */
935
936 if (pre_op) {
937 acpi_ps_free_op (pre_op);
938 pre_op = NULL;
939 }
940
941 /* Close this Op (will result in parse subtree deletion) */
942
943 status2 = acpi_ps_complete_this_op (walk_state, op);
944 if (ACPI_FAILURE (status2)) {
945 return_ACPI_STATUS (status2);
946 }
947 op = NULL;
948
949 switch (status) {
950 case AE_OK:
951 break;
952
953
954 case AE_CTRL_TRANSFER:
955
956 /* We are about to transfer to a called method. */
957
958 walk_state->prev_op = op;
959 walk_state->prev_arg_types = walk_state->arg_types;
960 return_ACPI_STATUS (status);
961
962
963 case AE_CTRL_END:
964
965 acpi_ps_pop_scope (parser_state, &op,
966 &walk_state->arg_types, &walk_state->arg_count);
967
968 if (op) {
969 walk_state->op = op;
970 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
971 walk_state->opcode = op->common.aml_opcode;
972
973 status = walk_state->ascending_callback (walk_state);
974 status = acpi_ps_next_parse_state (walk_state, op, status);
975
976 status2 = acpi_ps_complete_this_op (walk_state, op);
977 if (ACPI_FAILURE (status2)) {
978 return_ACPI_STATUS (status2);
979 }
980 op = NULL;
981 }
982 status = AE_OK;
983 break;
984
985
986 case AE_CTRL_BREAK:
987 case AE_CTRL_CONTINUE:
988
989 /* Pop off scopes until we find the While */
990
991 while (!op || (op->common.aml_opcode != AML_WHILE_OP)) {
992 acpi_ps_pop_scope (parser_state, &op,
993 &walk_state->arg_types, &walk_state->arg_count);
994 }
995
996 /* Close this iteration of the While loop */
997
998 walk_state->op = op;
999 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
1000 walk_state->opcode = op->common.aml_opcode;
1001
1002 status = walk_state->ascending_callback (walk_state);
1003 status = acpi_ps_next_parse_state (walk_state, op, status);
1004
1005 status2 = acpi_ps_complete_this_op (walk_state, op);
1006 if (ACPI_FAILURE (status2)) {
1007 return_ACPI_STATUS (status2);
1008 }
1009 op = NULL;
1010
1011 status = AE_OK;
1012 break;
1013
1014
1015 case AE_CTRL_TERMINATE:
1016
1017 status = AE_OK;
1018
1019 /* Clean up */
1020 do {
1021 if (op) {
1022 status2 = acpi_ps_complete_this_op (walk_state, op);
1023 if (ACPI_FAILURE (status2)) {
1024 return_ACPI_STATUS (status2);
1025 }
1026 }
1027 acpi_ps_pop_scope (parser_state, &op,
1028 &walk_state->arg_types, &walk_state->arg_count);
1029
1030 } while (op);
1031
1032 return_ACPI_STATUS (status);
1033
1034
1035 default: /* All other non-AE_OK status */
1036
1037 do {
1038 if (op) {
1039 status2 = acpi_ps_complete_this_op (walk_state, op);
1040 if (ACPI_FAILURE (status2)) {
1041 return_ACPI_STATUS (status2);
1042 }
1043 }
1044 acpi_ps_pop_scope (parser_state, &op,
1045 &walk_state->arg_types, &walk_state->arg_count);
1046
1047 } while (op);
1048
1049
1050 /*
1051 * TBD: Cleanup parse ops on error
1052 */
1053#if 0
1054 if (op == NULL) {
1055 acpi_ps_pop_scope (parser_state, &op,
1056 &walk_state->arg_types, &walk_state->arg_count);
1057 }
1058#endif
1059 walk_state->prev_op = op;
1060 walk_state->prev_arg_types = walk_state->arg_types;
1061 return_ACPI_STATUS (status);
1062 }
1063
1064 /* This scope complete? */
1065
1066 if (acpi_ps_has_completed_scope (parser_state)) {
1067 acpi_ps_pop_scope (parser_state, &op,
1068 &walk_state->arg_types, &walk_state->arg_count);
1069 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op));
1070 }
1071 else {
1072 op = NULL;
1073 }
1074
1075 } /* while parser_state->Aml */
1076
1077
1078 /*
1079 * Complete the last Op (if not completed), and clear the scope stack.
1080 * It is easily possible to end an AML "package" with an unbounded number
1081 * of open scopes (such as when several ASL blocks are closed with
1082 * sequential closing braces). We want to terminate each one cleanly.
1083 */
1084 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", op));
1085 do {
1086 if (op) {
1087 if (walk_state->ascending_callback != NULL) {
1088 walk_state->op = op;
1089 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
1090 walk_state->opcode = op->common.aml_opcode;
1091
1092 status = walk_state->ascending_callback (walk_state);
1093 status = acpi_ps_next_parse_state (walk_state, op, status);
1094 if (status == AE_CTRL_PENDING) {
1095 status = AE_OK;
1096 goto close_this_op;
1097 }
1098
1099 if (status == AE_CTRL_TERMINATE) {
1100 status = AE_OK;
1101
1102 /* Clean up */
1103 do {
1104 if (op) {
1105 status2 = acpi_ps_complete_this_op (walk_state, op);
1106 if (ACPI_FAILURE (status2)) {
1107 return_ACPI_STATUS (status2);
1108 }
1109 }
1110
1111 acpi_ps_pop_scope (parser_state, &op,
1112 &walk_state->arg_types, &walk_state->arg_count);
1113
1114 } while (op);
1115
1116 return_ACPI_STATUS (status);
1117 }
1118
1119 else if (ACPI_FAILURE (status)) {
1120 /* First error is most important */
1121
1122 (void) acpi_ps_complete_this_op (walk_state, op);
1123 return_ACPI_STATUS (status);
1124 }
1125 }
1126
1127 status2 = acpi_ps_complete_this_op (walk_state, op);
1128 if (ACPI_FAILURE (status2)) {
1129 return_ACPI_STATUS (status2);
1130 }
1131 }
1132
1133 acpi_ps_pop_scope (parser_state, &op, &walk_state->arg_types,
1134 &walk_state->arg_count);
1135
1136 } while (op);
1137
1138 return_ACPI_STATUS (status);
1139}
1140
1141
1142/*******************************************************************************
1143 *
1144 * FUNCTION: acpi_ps_parse_aml 424 * FUNCTION: acpi_ps_parse_aml
1145 * 425 *
1146 * PARAMETERS: walk_state - Current state 426 * PARAMETERS: walk_state - Current state
diff --git a/drivers/acpi/parser/psutils.c b/drivers/acpi/parser/psutils.c
index a10f88715d43..19a27020eeef 100644
--- a/drivers/acpi/parser/psutils.c
+++ b/drivers/acpi/parser/psutils.c
@@ -154,12 +154,14 @@ acpi_ps_alloc_op (
154 if (flags == ACPI_PARSEOP_GENERIC) { 154 if (flags == ACPI_PARSEOP_GENERIC) {
155 /* The generic op (default) is by far the most common (16 to 1) */ 155 /* The generic op (default) is by far the most common (16 to 1) */
156 156
157 op = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_PSNODE); 157 op = acpi_os_acquire_object (acpi_gbl_ps_node_cache);
158 memset(op, 0, sizeof(struct acpi_parse_obj_common));
158 } 159 }
159 else { 160 else {
160 /* Extended parseop */ 161 /* Extended parseop */
161 162
162 op = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_PSNODE_EXT); 163 op = acpi_os_acquire_object (acpi_gbl_ps_node_ext_cache);
164 memset(op, 0, sizeof(struct acpi_parse_obj_named));
163 } 165 }
164 166
165 /* Initialize the Op */ 167 /* Initialize the Op */
@@ -198,41 +200,14 @@ acpi_ps_free_op (
198 } 200 }
199 201
200 if (op->common.flags & ACPI_PARSEOP_GENERIC) { 202 if (op->common.flags & ACPI_PARSEOP_GENERIC) {
201 acpi_ut_release_to_cache (ACPI_MEM_LIST_PSNODE, op); 203 acpi_os_release_object (acpi_gbl_ps_node_cache, op);
202 } 204 }
203 else { 205 else {
204 acpi_ut_release_to_cache (ACPI_MEM_LIST_PSNODE_EXT, op); 206 acpi_os_release_object (acpi_gbl_ps_node_ext_cache, op);
205 } 207 }
206} 208}
207 209
208 210
209#ifdef ACPI_ENABLE_OBJECT_CACHE
210/*******************************************************************************
211 *
212 * FUNCTION: acpi_ps_delete_parse_cache
213 *
214 * PARAMETERS: None
215 *
216 * RETURN: None
217 *
218 * DESCRIPTION: Free all objects that are on the parse cache list.
219 *
220 ******************************************************************************/
221
222void
223acpi_ps_delete_parse_cache (
224 void)
225{
226 ACPI_FUNCTION_TRACE ("ps_delete_parse_cache");
227
228
229 acpi_ut_delete_generic_cache (ACPI_MEM_LIST_PSNODE);
230 acpi_ut_delete_generic_cache (ACPI_MEM_LIST_PSNODE_EXT);
231 return_VOID;
232}
233#endif
234
235
236/******************************************************************************* 211/*******************************************************************************
237 * 212 *
238 * FUNCTION: Utility functions 213 * FUNCTION: Utility functions
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-12 12:46:52 -0500