Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
9ad19ac4 | 3 | * Module Name: dswload - Dispatcher first pass namespace load callbacks |
1da177e4 LT |
4 | * |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
82a80941 | 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
1da177e4 LT |
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 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acparser.h" | |
47 | #include "amlcode.h" | |
48 | #include "acdispat.h" | |
49 | #include "acinterp.h" | |
50 | #include "acnamesp.h" | |
1da177e4 | 51 | |
73459f73 | 52 | #ifdef ACPI_ASL_COMPILER |
56324c10 | 53 | #include "acdisasm.h" |
1da177e4 LT |
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) { | |
22b5afce BM |
76 | case 0: |
77 | ||
78 | /* Parse only - caller will setup callbacks */ | |
79 | ||
80 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | | |
81 | ACPI_PARSE_DELETE_TREE | ACPI_PARSE_DISASSEMBLE; | |
82 | walk_state->descending_callback = NULL; | |
83 | walk_state->ascending_callback = NULL; | |
84 | break; | |
85 | ||
1da177e4 | 86 | case 1: |
1d1ea1b7 | 87 | |
22b5afce BM |
88 | /* Load pass 1 */ |
89 | ||
4be44fcd LB |
90 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
91 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
92 | walk_state->descending_callback = acpi_ds_load1_begin_op; |
93 | walk_state->ascending_callback = acpi_ds_load1_end_op; | |
94 | break; | |
95 | ||
96 | case 2: | |
1d1ea1b7 | 97 | |
22b5afce BM |
98 | /* Load pass 2 */ |
99 | ||
4be44fcd LB |
100 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
101 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
102 | walk_state->descending_callback = acpi_ds_load2_begin_op; |
103 | walk_state->ascending_callback = acpi_ds_load2_end_op; | |
104 | break; | |
105 | ||
106 | case 3: | |
1d1ea1b7 | 107 | |
22b5afce BM |
108 | /* Execution pass */ |
109 | ||
1da177e4 | 110 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd LB |
111 | walk_state->parse_flags |= ACPI_PARSE_EXECUTE | |
112 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
113 | walk_state->descending_callback = acpi_ds_exec_begin_op; |
114 | walk_state->ascending_callback = acpi_ds_exec_end_op; | |
115 | #endif | |
116 | break; | |
117 | ||
118 | default: | |
1d1ea1b7 | 119 | |
1da177e4 LT |
120 | return (AE_BAD_PARAMETER); |
121 | } | |
122 | ||
123 | return (AE_OK); | |
124 | } | |
125 | ||
1da177e4 LT |
126 | /******************************************************************************* |
127 | * | |
128 | * FUNCTION: acpi_ds_load1_begin_op | |
129 | * | |
130 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 131 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
132 | * |
133 | * RETURN: Status | |
134 | * | |
135 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
136 | * | |
137 | ******************************************************************************/ | |
138 | ||
139 | acpi_status | |
4be44fcd LB |
140 | acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state, |
141 | union acpi_parse_object ** out_op) | |
1da177e4 | 142 | { |
4be44fcd LB |
143 | union acpi_parse_object *op; |
144 | struct acpi_namespace_node *node; | |
145 | acpi_status status; | |
146 | acpi_object_type object_type; | |
147 | char *path; | |
148 | u32 flags; | |
1da177e4 | 149 | |
b229cf92 | 150 | ACPI_FUNCTION_TRACE(ds_load1_begin_op); |
1da177e4 LT |
151 | |
152 | op = walk_state->op; | |
4be44fcd LB |
153 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
154 | walk_state)); | |
1da177e4 LT |
155 | |
156 | /* We are only interested in opcodes that have an associated name */ | |
157 | ||
158 | if (op) { | |
159 | if (!(walk_state->op_info->flags & AML_NAMED)) { | |
1da177e4 | 160 | *out_op = op; |
28f55ebc | 161 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
162 | } |
163 | ||
164 | /* Check if this object has already been installed in the namespace */ | |
165 | ||
166 | if (op->common.node) { | |
167 | *out_op = op; | |
28f55ebc | 168 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
169 | } |
170 | } | |
171 | ||
4be44fcd | 172 | path = acpi_ps_get_next_namestring(&walk_state->parser_state); |
1da177e4 LT |
173 | |
174 | /* Map the raw opcode into an internal object type */ | |
175 | ||
176 | object_type = walk_state->op_info->object_type; | |
177 | ||
4be44fcd LB |
178 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
179 | "State=%p Op=%p [%s]\n", walk_state, op, | |
180 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
181 | |
182 | switch (walk_state->opcode) { | |
183 | case AML_SCOPE_OP: | |
1da177e4 LT |
184 | /* |
185 | * The target name of the Scope() operator must exist at this point so | |
186 | * that we can actually open the scope to enter new names underneath it. | |
187 | * Allow search-to-root for single namesegs. | |
188 | */ | |
4be44fcd LB |
189 | status = |
190 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
191 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, | |
192 | walk_state, &(node)); | |
73459f73 | 193 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
194 | if (status == AE_NOT_FOUND) { |
195 | /* | |
196 | * Table disassembly: | |
967440e3 | 197 | * Target of Scope() not found. Generate an External for it, and |
1da177e4 LT |
198 | * insert the name into the namespace. |
199 | */ | |
5af2b635 BM |
200 | acpi_dm_add_op_to_external_list(op, path, |
201 | ACPI_TYPE_DEVICE, 0, 0); | |
4be44fcd LB |
202 | status = |
203 | acpi_ns_lookup(walk_state->scope_info, path, | |
204 | object_type, ACPI_IMODE_LOAD_PASS1, | |
205 | ACPI_NS_SEARCH_PARENT, walk_state, | |
958dd242 | 206 | &node); |
1da177e4 LT |
207 | } |
208 | #endif | |
4be44fcd | 209 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 210 | ACPI_ERROR_NAMESPACE(path, status); |
28f55ebc | 211 | return_ACPI_STATUS(status); |
1da177e4 LT |
212 | } |
213 | ||
214 | /* | |
215 | * Check to make sure that the target is | |
216 | * one of the opcodes that actually opens a scope | |
217 | */ | |
218 | switch (node->type) { | |
15f0c0d1 | 219 | case ACPI_TYPE_ANY: |
4be44fcd | 220 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
221 | case ACPI_TYPE_DEVICE: |
222 | case ACPI_TYPE_POWER: | |
223 | case ACPI_TYPE_PROCESSOR: | |
224 | case ACPI_TYPE_THERMAL: | |
225 | ||
226 | /* These are acceptable types */ | |
227 | break; | |
228 | ||
229 | case ACPI_TYPE_INTEGER: | |
230 | case ACPI_TYPE_STRING: | |
231 | case ACPI_TYPE_BUFFER: | |
1da177e4 | 232 | /* |
f2cb1251 BM |
233 | * These types we will allow, but we will change the type. |
234 | * This enables some existing code of the form: | |
1da177e4 LT |
235 | * |
236 | * Name (DEB, 0) | |
237 | * Scope (DEB) { ... } | |
238 | * | |
f2cb1251 BM |
239 | * Note: silently change the type here. On the second pass, |
240 | * we will report a warning | |
1da177e4 | 241 | */ |
4be44fcd | 242 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
f2cb1251 BM |
243 | "Type override - [%4.4s] had invalid type (%s) " |
244 | "for Scope operator, changed to type ANY\n", | |
245 | acpi_ut_get_node_name(node), | |
4be44fcd | 246 | acpi_ut_get_type_name(node->type))); |
1da177e4 LT |
247 | |
248 | node->type = ACPI_TYPE_ANY; | |
249 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
250 | break; | |
251 | ||
28f538b5 | 252 | case ACPI_TYPE_METHOD: |
28f538b5 BM |
253 | /* |
254 | * Allow scope change to root during execution of module-level | |
255 | * code. Root is typed METHOD during this time. | |
256 | */ | |
257 | if ((node == acpi_gbl_root_node) && | |
258 | (walk_state-> | |
259 | parse_flags & ACPI_PARSE_MODULE_LEVEL)) { | |
260 | break; | |
261 | } | |
262 | ||
263 | /*lint -fallthrough */ | |
264 | ||
1da177e4 LT |
265 | default: |
266 | ||
267 | /* All other types are an error */ | |
268 | ||
b8e4d893 | 269 | ACPI_ERROR((AE_INFO, |
f2cb1251 BM |
270 | "Invalid type (%s) for target of " |
271 | "Scope operator [%4.4s] (Cannot override)", | |
272 | acpi_ut_get_type_name(node->type), | |
273 | acpi_ut_get_node_name(node))); | |
1da177e4 | 274 | |
28f55ebc | 275 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
1da177e4 LT |
276 | } |
277 | break; | |
278 | ||
1da177e4 | 279 | default: |
1da177e4 | 280 | /* |
44f6c012 RM |
281 | * For all other named opcodes, we will enter the name into |
282 | * the namespace. | |
1da177e4 LT |
283 | * |
284 | * Setup the search flags. | |
285 | * Since we are entering a name into the namespace, we do not want to | |
286 | * enable the search-to-root upsearch. | |
287 | * | |
288 | * There are only two conditions where it is acceptable that the name | |
289 | * already exists: | |
290 | * 1) the Scope() operator can reopen a scoping object that was | |
291 | * previously defined (Scope, Method, Device, etc.) | |
292 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
293 | * buffer_field, or Package), the name of the object is already | |
294 | * in the namespace. | |
295 | */ | |
296 | if (walk_state->deferred_node) { | |
52fc0b02 | 297 | |
1da177e4 LT |
298 | /* This name is already in the namespace, get the node */ |
299 | ||
300 | node = walk_state->deferred_node; | |
301 | status = AE_OK; | |
302 | break; | |
303 | } | |
304 | ||
28f55ebc BM |
305 | /* |
306 | * If we are executing a method, do not create any namespace objects | |
307 | * during the load phase, only during execution. | |
308 | */ | |
309 | if (walk_state->method_node) { | |
310 | node = NULL; | |
311 | status = AE_OK; | |
312 | break; | |
313 | } | |
314 | ||
1da177e4 LT |
315 | flags = ACPI_NS_NO_UPSEARCH; |
316 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
4be44fcd | 317 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
1da177e4 | 318 | flags |= ACPI_NS_ERROR_IF_FOUND; |
4be44fcd LB |
319 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
320 | "[%s] Cannot already exist\n", | |
321 | acpi_ut_get_type_name(object_type))); | |
322 | } else { | |
323 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
324 | "[%s] Both Find or Create allowed\n", | |
325 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
326 | } |
327 | ||
328 | /* | |
967440e3 BM |
329 | * Enter the named type into the internal namespace. We enter the name |
330 | * as we go downward in the parse tree. Any necessary subobjects that | |
44f6c012 RM |
331 | * involve arguments to the opcode must be created as we go back up the |
332 | * parse tree later. | |
1da177e4 | 333 | */ |
4be44fcd LB |
334 | status = |
335 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
336 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
958dd242 | 337 | &node); |
4be44fcd | 338 | if (ACPI_FAILURE(status)) { |
958dd242 BM |
339 | if (status == AE_ALREADY_EXISTS) { |
340 | ||
341 | /* The name already exists in this scope */ | |
342 | ||
343 | if (node->flags & ANOBJ_IS_EXTERNAL) { | |
344 | /* | |
345 | * Allow one create on an object or segment that was | |
346 | * previously declared External | |
347 | */ | |
348 | node->flags &= ~ANOBJ_IS_EXTERNAL; | |
349 | node->type = (u8) object_type; | |
350 | ||
351 | /* Just retyped a node, probably will need to open a scope */ | |
352 | ||
353 | if (acpi_ns_opens_scope(object_type)) { | |
354 | status = | |
355 | acpi_ds_scope_stack_push | |
356 | (node, object_type, | |
357 | walk_state); | |
358 | if (ACPI_FAILURE(status)) { | |
359 | return_ACPI_STATUS | |
360 | (status); | |
361 | } | |
362 | } | |
967440e3 | 363 | |
958dd242 BM |
364 | status = AE_OK; |
365 | } | |
366 | } | |
367 | ||
368 | if (ACPI_FAILURE(status)) { | |
958dd242 BM |
369 | ACPI_ERROR_NAMESPACE(path, status); |
370 | return_ACPI_STATUS(status); | |
371 | } | |
1da177e4 LT |
372 | } |
373 | break; | |
374 | } | |
375 | ||
1da177e4 LT |
376 | /* Common exit */ |
377 | ||
378 | if (!op) { | |
52fc0b02 | 379 | |
1da177e4 LT |
380 | /* Create a new op */ |
381 | ||
4be44fcd | 382 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 383 | if (!op) { |
28f55ebc | 384 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
385 | } |
386 | } | |
387 | ||
28f55ebc | 388 | /* Initialize the op */ |
1da177e4 LT |
389 | |
390 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
c51a4de8 | 391 | op->named.path = ACPI_CAST_PTR(u8, path); |
1da177e4 LT |
392 | #endif |
393 | ||
28f55ebc BM |
394 | if (node) { |
395 | /* | |
396 | * Put the Node in the "op" object that the parser uses, so we | |
397 | * can get it again quickly when this scope is closed | |
398 | */ | |
399 | op->common.node = node; | |
400 | op->named.name = node->name.integer; | |
401 | } | |
402 | ||
4be44fcd LB |
403 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
404 | op); | |
1da177e4 | 405 | *out_op = op; |
28f55ebc | 406 | return_ACPI_STATUS(status); |
1da177e4 LT |
407 | } |
408 | ||
1da177e4 LT |
409 | /******************************************************************************* |
410 | * | |
411 | * FUNCTION: acpi_ds_load1_end_op | |
412 | * | |
413 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
414 | * |
415 | * RETURN: Status | |
416 | * | |
417 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
418 | * both control methods and everything else. | |
419 | * | |
420 | ******************************************************************************/ | |
421 | ||
28f55ebc | 422 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 423 | { |
4be44fcd LB |
424 | union acpi_parse_object *op; |
425 | acpi_object_type object_type; | |
426 | acpi_status status = AE_OK; | |
1da177e4 | 427 | |
b229cf92 | 428 | ACPI_FUNCTION_TRACE(ds_load1_end_op); |
1da177e4 LT |
429 | |
430 | op = walk_state->op; | |
4be44fcd LB |
431 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
432 | walk_state)); | |
1da177e4 LT |
433 | |
434 | /* We are only interested in opcodes that have an associated name */ | |
435 | ||
436 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
28f55ebc | 437 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
438 | } |
439 | ||
440 | /* Get the object type to determine if we should pop the scope */ | |
441 | ||
442 | object_type = walk_state->op_info->object_type; | |
443 | ||
444 | #ifndef ACPI_NO_METHOD_EXECUTION | |
445 | if (walk_state->op_info->flags & AML_FIELD) { | |
28f55ebc BM |
446 | /* |
447 | * If we are executing a method, do not create any namespace objects | |
448 | * during the load phase, only during execution. | |
449 | */ | |
450 | if (!walk_state->method_node) { | |
451 | if (walk_state->opcode == AML_FIELD_OP || | |
452 | walk_state->opcode == AML_BANK_FIELD_OP || | |
453 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
454 | status = | |
455 | acpi_ds_init_field_objects(op, walk_state); | |
456 | } | |
1da177e4 | 457 | } |
28f55ebc | 458 | return_ACPI_STATUS(status); |
1da177e4 LT |
459 | } |
460 | ||
28f55ebc BM |
461 | /* |
462 | * If we are executing a method, do not create any namespace objects | |
463 | * during the load phase, only during execution. | |
464 | */ | |
465 | if (!walk_state->method_node) { | |
466 | if (op->common.aml_opcode == AML_REGION_OP) { | |
467 | status = | |
468 | acpi_ex_create_region(op->named.data, | |
469 | op->named.length, | |
967440e3 BM |
470 | (acpi_adr_space_type) ((op-> |
471 | common. | |
472 | value. | |
473 | arg)-> | |
474 | common. | |
475 | value. | |
476 | integer), | |
28f55ebc BM |
477 | walk_state); |
478 | if (ACPI_FAILURE(status)) { | |
479 | return_ACPI_STATUS(status); | |
480 | } | |
941f48bb LM |
481 | } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
482 | status = | |
483 | acpi_ex_create_region(op->named.data, | |
484 | op->named.length, | |
82a1b7cb | 485 | ACPI_ADR_SPACE_DATA_TABLE, |
941f48bb LM |
486 | walk_state); |
487 | if (ACPI_FAILURE(status)) { | |
488 | return_ACPI_STATUS(status); | |
489 | } | |
1da177e4 LT |
490 | } |
491 | } | |
492 | #endif | |
493 | ||
494 | if (op->common.aml_opcode == AML_NAME_OP) { | |
52fc0b02 | 495 | |
1da177e4 LT |
496 | /* For Name opcode, get the object type from the argument */ |
497 | ||
498 | if (op->common.value.arg) { | |
4be44fcd LB |
499 | object_type = (acpi_ps_get_opcode_info((op->common. |
500 | value.arg)-> | |
501 | common. | |
502 | aml_opcode))-> | |
503 | object_type; | |
28f55ebc BM |
504 | |
505 | /* Set node type if we have a namespace node */ | |
506 | ||
507 | if (op->common.node) { | |
508 | op->common.node->type = (u8) object_type; | |
509 | } | |
1da177e4 LT |
510 | } |
511 | } | |
512 | ||
defba1d8 BM |
513 | /* |
514 | * If we are executing a method, do not create any namespace objects | |
515 | * during the load phase, only during execution. | |
516 | */ | |
517 | if (!walk_state->method_node) { | |
518 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
519 | /* | |
520 | * method_op pkg_length name_string method_flags term_list | |
521 | * | |
522 | * Note: We must create the method node/object pair as soon as we | |
967440e3 | 523 | * see the method declaration. This allows later pass1 parsing |
defba1d8 BM |
524 | * of invocations of the method (need to know the number of |
525 | * arguments.) | |
526 | */ | |
527 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
b229cf92 | 528 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n", |
defba1d8 | 529 | walk_state, op, op->named.node)); |
1da177e4 | 530 | |
defba1d8 BM |
531 | if (!acpi_ns_get_attached_object(op->named.node)) { |
532 | walk_state->operands[0] = | |
533 | ACPI_CAST_PTR(void, op->named.node); | |
534 | walk_state->num_operands = 1; | |
1da177e4 | 535 | |
defba1d8 BM |
536 | status = |
537 | acpi_ds_create_operands(walk_state, | |
538 | op->common.value. | |
539 | arg); | |
540 | if (ACPI_SUCCESS(status)) { | |
541 | status = | |
542 | acpi_ex_create_method(op->named. | |
543 | data, | |
544 | op->named. | |
545 | length, | |
546 | walk_state); | |
547 | } | |
967440e3 | 548 | |
defba1d8 BM |
549 | walk_state->operands[0] = NULL; |
550 | walk_state->num_operands = 0; | |
1da177e4 | 551 | |
defba1d8 BM |
552 | if (ACPI_FAILURE(status)) { |
553 | return_ACPI_STATUS(status); | |
554 | } | |
1da177e4 LT |
555 | } |
556 | } | |
557 | } | |
558 | ||
defba1d8 | 559 | /* Pop the scope stack (only if loading a table) */ |
1da177e4 | 560 | |
defba1d8 | 561 | if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
4be44fcd LB |
562 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
563 | "(%s): Popping scope for Op %p\n", | |
564 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 565 | |
4be44fcd | 566 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
567 | } |
568 | ||
28f55ebc | 569 | return_ACPI_STATUS(status); |
1da177e4 | 570 | } |