Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsopcode - Dispatcher Op Region support and handling of | |
4 | * "control" opcodes | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
75a44ce0 | 9 | * Copyright (C) 2000 - 2008, Intel Corp. |
1da177e4 LT |
10 | * All rights reserved. |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
1da177e4 | 45 | #include <acpi/acpi.h> |
e2f7a777 LB |
46 | #include "accommon.h" |
47 | #include "acparser.h" | |
48 | #include "amlcode.h" | |
49 | #include "acdispat.h" | |
50 | #include "acinterp.h" | |
51 | #include "acnamesp.h" | |
52 | #include "acevents.h" | |
53 | #include "actables.h" | |
1da177e4 LT |
54 | |
55 | #define _COMPONENT ACPI_DISPATCHER | |
4be44fcd | 56 | ACPI_MODULE_NAME("dsopcode") |
1da177e4 | 57 | |
44f6c012 | 58 | /* Local prototypes */ |
44f6c012 | 59 | static acpi_status |
4be44fcd LB |
60 | acpi_ds_execute_arguments(struct acpi_namespace_node *node, |
61 | struct acpi_namespace_node *scope_node, | |
62 | u32 aml_length, u8 * aml_start); | |
44f6c012 RM |
63 | |
64 | static acpi_status | |
4be44fcd LB |
65 | acpi_ds_init_buffer_field(u16 aml_opcode, |
66 | union acpi_operand_object *obj_desc, | |
67 | union acpi_operand_object *buffer_desc, | |
68 | union acpi_operand_object *offset_desc, | |
69 | union acpi_operand_object *length_desc, | |
70 | union acpi_operand_object *result_desc); | |
44f6c012 RM |
71 | |
72 | /******************************************************************************* | |
1da177e4 LT |
73 | * |
74 | * FUNCTION: acpi_ds_execute_arguments | |
75 | * | |
44f6c012 RM |
76 | * PARAMETERS: Node - Object NS node |
77 | * scope_node - Parent NS node | |
1da177e4 LT |
78 | * aml_length - Length of executable AML |
79 | * aml_start - Pointer to the AML | |
80 | * | |
81 | * RETURN: Status. | |
82 | * | |
83 | * DESCRIPTION: Late (deferred) execution of region or field arguments | |
84 | * | |
44f6c012 | 85 | ******************************************************************************/ |
1da177e4 | 86 | |
44f6c012 | 87 | static acpi_status |
4be44fcd LB |
88 | acpi_ds_execute_arguments(struct acpi_namespace_node *node, |
89 | struct acpi_namespace_node *scope_node, | |
90 | u32 aml_length, u8 * aml_start) | |
1da177e4 | 91 | { |
4be44fcd LB |
92 | acpi_status status; |
93 | union acpi_parse_object *op; | |
94 | struct acpi_walk_state *walk_state; | |
1da177e4 | 95 | |
b229cf92 | 96 | ACPI_FUNCTION_TRACE(ds_execute_arguments); |
1da177e4 LT |
97 | |
98 | /* | |
99 | * Allocate a new parser op to be the root of the parsed tree | |
100 | */ | |
4be44fcd | 101 | op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); |
1da177e4 | 102 | if (!op) { |
4be44fcd | 103 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
104 | } |
105 | ||
106 | /* Save the Node for use in acpi_ps_parse_aml */ | |
107 | ||
108 | op->common.node = scope_node; | |
109 | ||
110 | /* Create and initialize a new parser state */ | |
111 | ||
4be44fcd | 112 | walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); |
1da177e4 | 113 | if (!walk_state) { |
88ac00f5 RM |
114 | status = AE_NO_MEMORY; |
115 | goto cleanup; | |
1da177e4 LT |
116 | } |
117 | ||
4be44fcd | 118 | status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, |
ec3153fb | 119 | aml_length, NULL, ACPI_IMODE_LOAD_PASS1); |
4be44fcd LB |
120 | if (ACPI_FAILURE(status)) { |
121 | acpi_ds_delete_walk_state(walk_state); | |
88ac00f5 | 122 | goto cleanup; |
1da177e4 LT |
123 | } |
124 | ||
125 | /* Mark this parse as a deferred opcode */ | |
126 | ||
127 | walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; | |
128 | walk_state->deferred_node = node; | |
129 | ||
130 | /* Pass1: Parse the entire declaration */ | |
131 | ||
4be44fcd LB |
132 | status = acpi_ps_parse_aml(walk_state); |
133 | if (ACPI_FAILURE(status)) { | |
88ac00f5 | 134 | goto cleanup; |
1da177e4 LT |
135 | } |
136 | ||
137 | /* Get and init the Op created above */ | |
138 | ||
139 | op->common.node = node; | |
4be44fcd | 140 | acpi_ps_delete_parse_tree(op); |
1da177e4 LT |
141 | |
142 | /* Evaluate the deferred arguments */ | |
143 | ||
4be44fcd | 144 | op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); |
1da177e4 | 145 | if (!op) { |
4be44fcd | 146 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
147 | } |
148 | ||
149 | op->common.node = scope_node; | |
150 | ||
151 | /* Create and initialize a new parser state */ | |
152 | ||
4be44fcd | 153 | walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); |
1da177e4 | 154 | if (!walk_state) { |
88ac00f5 RM |
155 | status = AE_NO_MEMORY; |
156 | goto cleanup; | |
1da177e4 LT |
157 | } |
158 | ||
159 | /* Execute the opcode and arguments */ | |
160 | ||
4be44fcd | 161 | status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, |
ec3153fb | 162 | aml_length, NULL, ACPI_IMODE_EXECUTE); |
4be44fcd LB |
163 | if (ACPI_FAILURE(status)) { |
164 | acpi_ds_delete_walk_state(walk_state); | |
88ac00f5 | 165 | goto cleanup; |
1da177e4 LT |
166 | } |
167 | ||
168 | /* Mark this execution as a deferred opcode */ | |
169 | ||
170 | walk_state->deferred_node = node; | |
4be44fcd | 171 | status = acpi_ps_parse_aml(walk_state); |
88ac00f5 | 172 | |
4be44fcd LB |
173 | cleanup: |
174 | acpi_ps_delete_parse_tree(op); | |
175 | return_ACPI_STATUS(status); | |
1da177e4 LT |
176 | } |
177 | ||
44f6c012 | 178 | /******************************************************************************* |
1da177e4 LT |
179 | * |
180 | * FUNCTION: acpi_ds_get_buffer_field_arguments | |
181 | * | |
182 | * PARAMETERS: obj_desc - A valid buffer_field object | |
183 | * | |
184 | * RETURN: Status. | |
185 | * | |
186 | * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late | |
187 | * evaluation of these field attributes. | |
188 | * | |
44f6c012 | 189 | ******************************************************************************/ |
1da177e4 LT |
190 | |
191 | acpi_status | |
4be44fcd | 192 | acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc) |
1da177e4 | 193 | { |
4be44fcd LB |
194 | union acpi_operand_object *extra_desc; |
195 | struct acpi_namespace_node *node; | |
196 | acpi_status status; | |
1da177e4 | 197 | |
b229cf92 | 198 | ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc); |
1da177e4 LT |
199 | |
200 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { | |
4be44fcd | 201 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
202 | } |
203 | ||
204 | /* Get the AML pointer (method object) and buffer_field node */ | |
205 | ||
4be44fcd | 206 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
1da177e4 LT |
207 | node = obj_desc->buffer_field.node; |
208 | ||
4be44fcd LB |
209 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname |
210 | (ACPI_TYPE_BUFFER_FIELD, node, NULL)); | |
b229cf92 | 211 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", |
4be44fcd | 212 | acpi_ut_get_node_name(node))); |
1da177e4 LT |
213 | |
214 | /* Execute the AML code for the term_arg arguments */ | |
215 | ||
4be44fcd LB |
216 | status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node), |
217 | extra_desc->extra.aml_length, | |
218 | extra_desc->extra.aml_start); | |
219 | return_ACPI_STATUS(status); | |
1da177e4 LT |
220 | } |
221 | ||
ef805d95 LM |
222 | /******************************************************************************* |
223 | * | |
224 | * FUNCTION: acpi_ds_get_bank_field_arguments | |
225 | * | |
226 | * PARAMETERS: obj_desc - A valid bank_field object | |
227 | * | |
228 | * RETURN: Status. | |
229 | * | |
230 | * DESCRIPTION: Get bank_field bank_value. This implements the late | |
231 | * evaluation of these field attributes. | |
232 | * | |
233 | ******************************************************************************/ | |
234 | ||
235 | acpi_status | |
236 | acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc) | |
237 | { | |
238 | union acpi_operand_object *extra_desc; | |
239 | struct acpi_namespace_node *node; | |
240 | acpi_status status; | |
241 | ||
242 | ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc); | |
243 | ||
244 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { | |
245 | return_ACPI_STATUS(AE_OK); | |
246 | } | |
247 | ||
248 | /* Get the AML pointer (method object) and bank_field node */ | |
249 | ||
250 | extra_desc = acpi_ns_get_secondary_object(obj_desc); | |
251 | node = obj_desc->bank_field.node; | |
252 | ||
253 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname | |
254 | (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL)); | |
255 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", | |
256 | acpi_ut_get_node_name(node))); | |
257 | ||
258 | /* Execute the AML code for the term_arg arguments */ | |
259 | ||
260 | status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node), | |
261 | extra_desc->extra.aml_length, | |
262 | extra_desc->extra.aml_start); | |
263 | return_ACPI_STATUS(status); | |
264 | } | |
265 | ||
44f6c012 | 266 | /******************************************************************************* |
1da177e4 LT |
267 | * |
268 | * FUNCTION: acpi_ds_get_buffer_arguments | |
269 | * | |
270 | * PARAMETERS: obj_desc - A valid Buffer object | |
271 | * | |
272 | * RETURN: Status. | |
273 | * | |
274 | * DESCRIPTION: Get Buffer length and initializer byte list. This implements | |
275 | * the late evaluation of these attributes. | |
276 | * | |
44f6c012 | 277 | ******************************************************************************/ |
1da177e4 | 278 | |
4be44fcd | 279 | acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc) |
1da177e4 | 280 | { |
4be44fcd LB |
281 | struct acpi_namespace_node *node; |
282 | acpi_status status; | |
1da177e4 | 283 | |
b229cf92 | 284 | ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc); |
1da177e4 LT |
285 | |
286 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { | |
4be44fcd | 287 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
288 | } |
289 | ||
290 | /* Get the Buffer node */ | |
291 | ||
292 | node = obj_desc->buffer.node; | |
293 | if (!node) { | |
b8e4d893 BM |
294 | ACPI_ERROR((AE_INFO, |
295 | "No pointer back to NS node in buffer obj %p", | |
296 | obj_desc)); | |
4be44fcd | 297 | return_ACPI_STATUS(AE_AML_INTERNAL); |
1da177e4 LT |
298 | } |
299 | ||
4be44fcd | 300 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n")); |
1da177e4 LT |
301 | |
302 | /* Execute the AML code for the term_arg arguments */ | |
303 | ||
4be44fcd LB |
304 | status = acpi_ds_execute_arguments(node, node, |
305 | obj_desc->buffer.aml_length, | |
306 | obj_desc->buffer.aml_start); | |
307 | return_ACPI_STATUS(status); | |
1da177e4 LT |
308 | } |
309 | ||
44f6c012 | 310 | /******************************************************************************* |
1da177e4 LT |
311 | * |
312 | * FUNCTION: acpi_ds_get_package_arguments | |
313 | * | |
314 | * PARAMETERS: obj_desc - A valid Package object | |
315 | * | |
316 | * RETURN: Status. | |
317 | * | |
318 | * DESCRIPTION: Get Package length and initializer byte list. This implements | |
319 | * the late evaluation of these attributes. | |
320 | * | |
44f6c012 | 321 | ******************************************************************************/ |
1da177e4 | 322 | |
4be44fcd | 323 | acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc) |
1da177e4 | 324 | { |
4be44fcd LB |
325 | struct acpi_namespace_node *node; |
326 | acpi_status status; | |
1da177e4 | 327 | |
b229cf92 | 328 | ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc); |
1da177e4 LT |
329 | |
330 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { | |
4be44fcd | 331 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
332 | } |
333 | ||
334 | /* Get the Package node */ | |
335 | ||
336 | node = obj_desc->package.node; | |
337 | if (!node) { | |
b8e4d893 BM |
338 | ACPI_ERROR((AE_INFO, |
339 | "No pointer back to NS node in package %p", | |
340 | obj_desc)); | |
4be44fcd | 341 | return_ACPI_STATUS(AE_AML_INTERNAL); |
1da177e4 LT |
342 | } |
343 | ||
4be44fcd | 344 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Arg Init\n")); |
1da177e4 LT |
345 | |
346 | /* Execute the AML code for the term_arg arguments */ | |
347 | ||
4be44fcd LB |
348 | status = acpi_ds_execute_arguments(node, node, |
349 | obj_desc->package.aml_length, | |
350 | obj_desc->package.aml_start); | |
351 | return_ACPI_STATUS(status); | |
1da177e4 LT |
352 | } |
353 | ||
1da177e4 LT |
354 | /***************************************************************************** |
355 | * | |
356 | * FUNCTION: acpi_ds_get_region_arguments | |
357 | * | |
358 | * PARAMETERS: obj_desc - A valid region object | |
359 | * | |
360 | * RETURN: Status. | |
361 | * | |
362 | * DESCRIPTION: Get region address and length. This implements the late | |
363 | * evaluation of these region attributes. | |
364 | * | |
365 | ****************************************************************************/ | |
366 | ||
4be44fcd | 367 | acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) |
1da177e4 | 368 | { |
4be44fcd LB |
369 | struct acpi_namespace_node *node; |
370 | acpi_status status; | |
371 | union acpi_operand_object *extra_desc; | |
1da177e4 | 372 | |
b229cf92 | 373 | ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc); |
1da177e4 LT |
374 | |
375 | if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { | |
4be44fcd | 376 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
377 | } |
378 | ||
4be44fcd | 379 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
1da177e4 | 380 | if (!extra_desc) { |
4be44fcd | 381 | return_ACPI_STATUS(AE_NOT_EXIST); |
1da177e4 LT |
382 | } |
383 | ||
384 | /* Get the Region node */ | |
385 | ||
386 | node = obj_desc->region.node; | |
387 | ||
4be44fcd LB |
388 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname |
389 | (ACPI_TYPE_REGION, node, NULL)); | |
1da177e4 | 390 | |
b229cf92 | 391 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", |
4be44fcd LB |
392 | acpi_ut_get_node_name(node), |
393 | extra_desc->extra.aml_start)); | |
1da177e4 LT |
394 | |
395 | /* Execute the argument AML */ | |
396 | ||
4be44fcd LB |
397 | status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node), |
398 | extra_desc->extra.aml_length, | |
399 | extra_desc->extra.aml_start); | |
400 | return_ACPI_STATUS(status); | |
1da177e4 LT |
401 | } |
402 | ||
44f6c012 | 403 | /******************************************************************************* |
1da177e4 LT |
404 | * |
405 | * FUNCTION: acpi_ds_initialize_region | |
406 | * | |
44f6c012 | 407 | * PARAMETERS: obj_handle - Region namespace node |
1da177e4 LT |
408 | * |
409 | * RETURN: Status | |
410 | * | |
411 | * DESCRIPTION: Front end to ev_initialize_region | |
412 | * | |
44f6c012 | 413 | ******************************************************************************/ |
1da177e4 | 414 | |
4be44fcd | 415 | acpi_status acpi_ds_initialize_region(acpi_handle obj_handle) |
1da177e4 | 416 | { |
4be44fcd LB |
417 | union acpi_operand_object *obj_desc; |
418 | acpi_status status; | |
1da177e4 | 419 | |
4be44fcd | 420 | obj_desc = acpi_ns_get_attached_object(obj_handle); |
1da177e4 LT |
421 | |
422 | /* Namespace is NOT locked */ | |
423 | ||
4be44fcd | 424 | status = acpi_ev_initialize_region(obj_desc, FALSE); |
1da177e4 LT |
425 | return (status); |
426 | } | |
427 | ||
44f6c012 | 428 | /******************************************************************************* |
1da177e4 LT |
429 | * |
430 | * FUNCTION: acpi_ds_init_buffer_field | |
431 | * | |
432 | * PARAMETERS: aml_opcode - create_xxx_field | |
433 | * obj_desc - buffer_field object | |
434 | * buffer_desc - Host Buffer | |
435 | * offset_desc - Offset into buffer | |
44f6c012 RM |
436 | * length_desc - Length of field (CREATE_FIELD_OP only) |
437 | * result_desc - Where to store the result | |
1da177e4 LT |
438 | * |
439 | * RETURN: Status | |
440 | * | |
441 | * DESCRIPTION: Perform actual initialization of a buffer field | |
442 | * | |
44f6c012 | 443 | ******************************************************************************/ |
1da177e4 | 444 | |
44f6c012 | 445 | static acpi_status |
4be44fcd LB |
446 | acpi_ds_init_buffer_field(u16 aml_opcode, |
447 | union acpi_operand_object *obj_desc, | |
448 | union acpi_operand_object *buffer_desc, | |
449 | union acpi_operand_object *offset_desc, | |
450 | union acpi_operand_object *length_desc, | |
451 | union acpi_operand_object *result_desc) | |
1da177e4 | 452 | { |
4be44fcd LB |
453 | u32 offset; |
454 | u32 bit_offset; | |
455 | u32 bit_count; | |
456 | u8 field_flags; | |
457 | acpi_status status; | |
1da177e4 | 458 | |
b229cf92 | 459 | ACPI_FUNCTION_TRACE_PTR(ds_init_buffer_field, obj_desc); |
1da177e4 LT |
460 | |
461 | /* Host object must be a Buffer */ | |
462 | ||
3371c19c | 463 | if (buffer_desc->common.type != ACPI_TYPE_BUFFER) { |
b8e4d893 BM |
464 | ACPI_ERROR((AE_INFO, |
465 | "Target of Create Field is not a Buffer object - %s", | |
466 | acpi_ut_get_object_type_name(buffer_desc))); | |
1da177e4 LT |
467 | |
468 | status = AE_AML_OPERAND_TYPE; | |
469 | goto cleanup; | |
470 | } | |
471 | ||
472 | /* | |
473 | * The last parameter to all of these opcodes (result_desc) started | |
474 | * out as a name_string, and should therefore now be a NS node | |
475 | * after resolution in acpi_ex_resolve_operands(). | |
476 | */ | |
4be44fcd | 477 | if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) { |
b8e4d893 BM |
478 | ACPI_ERROR((AE_INFO, |
479 | "(%s) destination not a NS Node [%s]", | |
480 | acpi_ps_get_opcode_name(aml_opcode), | |
481 | acpi_ut_get_descriptor_name(result_desc))); | |
1da177e4 LT |
482 | |
483 | status = AE_AML_OPERAND_TYPE; | |
484 | goto cleanup; | |
485 | } | |
486 | ||
487 | offset = (u32) offset_desc->integer.value; | |
488 | ||
489 | /* | |
490 | * Setup the Bit offsets and counts, according to the opcode | |
491 | */ | |
492 | switch (aml_opcode) { | |
493 | case AML_CREATE_FIELD_OP: | |
494 | ||
495 | /* Offset is in bits, count is in bits */ | |
496 | ||
44f6c012 | 497 | field_flags = AML_FIELD_ACCESS_BYTE; |
1da177e4 | 498 | bit_offset = offset; |
4be44fcd | 499 | bit_count = (u32) length_desc->integer.value; |
44f6c012 RM |
500 | |
501 | /* Must have a valid (>0) bit count */ | |
502 | ||
503 | if (bit_count == 0) { | |
b8e4d893 | 504 | ACPI_ERROR((AE_INFO, |
b229cf92 | 505 | "Attempt to CreateField of length zero")); |
44f6c012 RM |
506 | status = AE_AML_OPERAND_VALUE; |
507 | goto cleanup; | |
508 | } | |
1da177e4 LT |
509 | break; |
510 | ||
511 | case AML_CREATE_BIT_FIELD_OP: | |
512 | ||
513 | /* Offset is in bits, Field is one bit */ | |
514 | ||
515 | bit_offset = offset; | |
4be44fcd | 516 | bit_count = 1; |
1da177e4 LT |
517 | field_flags = AML_FIELD_ACCESS_BYTE; |
518 | break; | |
519 | ||
520 | case AML_CREATE_BYTE_FIELD_OP: | |
521 | ||
522 | /* Offset is in bytes, field is one byte */ | |
523 | ||
524 | bit_offset = 8 * offset; | |
4be44fcd | 525 | bit_count = 8; |
1da177e4 LT |
526 | field_flags = AML_FIELD_ACCESS_BYTE; |
527 | break; | |
528 | ||
529 | case AML_CREATE_WORD_FIELD_OP: | |
530 | ||
531 | /* Offset is in bytes, field is one word */ | |
532 | ||
533 | bit_offset = 8 * offset; | |
4be44fcd | 534 | bit_count = 16; |
1da177e4 LT |
535 | field_flags = AML_FIELD_ACCESS_WORD; |
536 | break; | |
537 | ||
538 | case AML_CREATE_DWORD_FIELD_OP: | |
539 | ||
540 | /* Offset is in bytes, field is one dword */ | |
541 | ||
542 | bit_offset = 8 * offset; | |
4be44fcd | 543 | bit_count = 32; |
1da177e4 LT |
544 | field_flags = AML_FIELD_ACCESS_DWORD; |
545 | break; | |
546 | ||
547 | case AML_CREATE_QWORD_FIELD_OP: | |
548 | ||
549 | /* Offset is in bytes, field is one qword */ | |
550 | ||
551 | bit_offset = 8 * offset; | |
4be44fcd | 552 | bit_count = 64; |
1da177e4 LT |
553 | field_flags = AML_FIELD_ACCESS_QWORD; |
554 | break; | |
555 | ||
556 | default: | |
557 | ||
b8e4d893 BM |
558 | ACPI_ERROR((AE_INFO, |
559 | "Unknown field creation opcode %02x", aml_opcode)); | |
1da177e4 LT |
560 | status = AE_AML_BAD_OPCODE; |
561 | goto cleanup; | |
562 | } | |
563 | ||
564 | /* Entire field must fit within the current length of the buffer */ | |
565 | ||
4be44fcd | 566 | if ((bit_offset + bit_count) > (8 * (u32) buffer_desc->buffer.length)) { |
b8e4d893 BM |
567 | ACPI_ERROR((AE_INFO, |
568 | "Field [%4.4s] at %d exceeds Buffer [%4.4s] size %d (bits)", | |
569 | acpi_ut_get_node_name(result_desc), | |
570 | bit_offset + bit_count, | |
571 | acpi_ut_get_node_name(buffer_desc->buffer.node), | |
572 | 8 * (u32) buffer_desc->buffer.length)); | |
1da177e4 LT |
573 | status = AE_AML_BUFFER_LIMIT; |
574 | goto cleanup; | |
575 | } | |
576 | ||
577 | /* | |
578 | * Initialize areas of the field object that are common to all fields | |
44f6c012 RM |
579 | * For field_flags, use LOCK_RULE = 0 (NO_LOCK), |
580 | * UPDATE_RULE = 0 (UPDATE_PRESERVE) | |
1da177e4 | 581 | */ |
4be44fcd LB |
582 | status = acpi_ex_prep_common_field_object(obj_desc, field_flags, 0, |
583 | bit_offset, bit_count); | |
584 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
585 | goto cleanup; |
586 | } | |
587 | ||
588 | obj_desc->buffer_field.buffer_obj = buffer_desc; | |
589 | ||
590 | /* Reference count for buffer_desc inherits obj_desc count */ | |
591 | ||
44f6c012 | 592 | buffer_desc->common.reference_count = (u16) |
4be44fcd LB |
593 | (buffer_desc->common.reference_count + |
594 | obj_desc->common.reference_count); | |
1da177e4 | 595 | |
4be44fcd | 596 | cleanup: |
1da177e4 LT |
597 | |
598 | /* Always delete the operands */ | |
599 | ||
4be44fcd LB |
600 | acpi_ut_remove_reference(offset_desc); |
601 | acpi_ut_remove_reference(buffer_desc); | |
1da177e4 LT |
602 | |
603 | if (aml_opcode == AML_CREATE_FIELD_OP) { | |
4be44fcd | 604 | acpi_ut_remove_reference(length_desc); |
1da177e4 LT |
605 | } |
606 | ||
607 | /* On failure, delete the result descriptor */ | |
608 | ||
4be44fcd LB |
609 | if (ACPI_FAILURE(status)) { |
610 | acpi_ut_remove_reference(result_desc); /* Result descriptor */ | |
611 | } else { | |
1da177e4 LT |
612 | /* Now the address and length are valid for this buffer_field */ |
613 | ||
614 | obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID; | |
615 | } | |
616 | ||
4be44fcd | 617 | return_ACPI_STATUS(status); |
1da177e4 LT |
618 | } |
619 | ||
44f6c012 | 620 | /******************************************************************************* |
1da177e4 LT |
621 | * |
622 | * FUNCTION: acpi_ds_eval_buffer_field_operands | |
623 | * | |
624 | * PARAMETERS: walk_state - Current walk | |
625 | * Op - A valid buffer_field Op object | |
626 | * | |
627 | * RETURN: Status | |
628 | * | |
629 | * DESCRIPTION: Get buffer_field Buffer and Index | |
630 | * Called from acpi_ds_exec_end_op during buffer_field parse tree walk | |
631 | * | |
44f6c012 | 632 | ******************************************************************************/ |
1da177e4 LT |
633 | |
634 | acpi_status | |
4be44fcd LB |
635 | acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state, |
636 | union acpi_parse_object *op) | |
1da177e4 | 637 | { |
4be44fcd LB |
638 | acpi_status status; |
639 | union acpi_operand_object *obj_desc; | |
640 | struct acpi_namespace_node *node; | |
641 | union acpi_parse_object *next_op; | |
1da177e4 | 642 | |
b229cf92 | 643 | ACPI_FUNCTION_TRACE_PTR(ds_eval_buffer_field_operands, op); |
1da177e4 LT |
644 | |
645 | /* | |
646 | * This is where we evaluate the address and length fields of the | |
647 | * create_xxx_field declaration | |
648 | */ | |
4be44fcd | 649 | node = op->common.node; |
1da177e4 LT |
650 | |
651 | /* next_op points to the op that holds the Buffer */ | |
652 | ||
653 | next_op = op->common.value.arg; | |
654 | ||
655 | /* Evaluate/create the address and length operands */ | |
656 | ||
4be44fcd LB |
657 | status = acpi_ds_create_operands(walk_state, next_op); |
658 | if (ACPI_FAILURE(status)) { | |
659 | return_ACPI_STATUS(status); | |
1da177e4 LT |
660 | } |
661 | ||
4be44fcd | 662 | obj_desc = acpi_ns_get_attached_object(node); |
1da177e4 | 663 | if (!obj_desc) { |
4be44fcd | 664 | return_ACPI_STATUS(AE_NOT_EXIST); |
1da177e4 LT |
665 | } |
666 | ||
667 | /* Resolve the operands */ | |
668 | ||
4be44fcd LB |
669 | status = acpi_ex_resolve_operands(op->common.aml_opcode, |
670 | ACPI_WALK_OPERANDS, walk_state); | |
4be44fcd | 671 | if (ACPI_FAILURE(status)) { |
b8e4d893 BM |
672 | ACPI_ERROR((AE_INFO, "(%s) bad operand(s) (%X)", |
673 | acpi_ps_get_opcode_name(op->common.aml_opcode), | |
674 | status)); | |
1da177e4 | 675 | |
4be44fcd | 676 | return_ACPI_STATUS(status); |
1da177e4 LT |
677 | } |
678 | ||
679 | /* Initialize the Buffer Field */ | |
680 | ||
681 | if (op->common.aml_opcode == AML_CREATE_FIELD_OP) { | |
52fc0b02 | 682 | |
1da177e4 LT |
683 | /* NOTE: Slightly different operands for this opcode */ |
684 | ||
4be44fcd LB |
685 | status = |
686 | acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc, | |
687 | walk_state->operands[0], | |
688 | walk_state->operands[1], | |
689 | walk_state->operands[2], | |
690 | walk_state->operands[3]); | |
691 | } else { | |
1da177e4 LT |
692 | /* All other, create_xxx_field opcodes */ |
693 | ||
4be44fcd LB |
694 | status = |
695 | acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc, | |
696 | walk_state->operands[0], | |
697 | walk_state->operands[1], NULL, | |
698 | walk_state->operands[2]); | |
1da177e4 LT |
699 | } |
700 | ||
4be44fcd | 701 | return_ACPI_STATUS(status); |
1da177e4 LT |
702 | } |
703 | ||
44f6c012 | 704 | /******************************************************************************* |
1da177e4 LT |
705 | * |
706 | * FUNCTION: acpi_ds_eval_region_operands | |
707 | * | |
708 | * PARAMETERS: walk_state - Current walk | |
709 | * Op - A valid region Op object | |
710 | * | |
711 | * RETURN: Status | |
712 | * | |
713 | * DESCRIPTION: Get region address and length | |
714 | * Called from acpi_ds_exec_end_op during op_region parse tree walk | |
715 | * | |
44f6c012 | 716 | ******************************************************************************/ |
1da177e4 LT |
717 | |
718 | acpi_status | |
4be44fcd LB |
719 | acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state, |
720 | union acpi_parse_object *op) | |
1da177e4 | 721 | { |
4be44fcd LB |
722 | acpi_status status; |
723 | union acpi_operand_object *obj_desc; | |
724 | union acpi_operand_object *operand_desc; | |
725 | struct acpi_namespace_node *node; | |
726 | union acpi_parse_object *next_op; | |
1da177e4 | 727 | |
b229cf92 | 728 | ACPI_FUNCTION_TRACE_PTR(ds_eval_region_operands, op); |
1da177e4 LT |
729 | |
730 | /* | |
44f6c012 RM |
731 | * This is where we evaluate the address and length fields of the |
732 | * op_region declaration | |
1da177e4 | 733 | */ |
4be44fcd | 734 | node = op->common.node; |
1da177e4 LT |
735 | |
736 | /* next_op points to the op that holds the space_iD */ | |
737 | ||
738 | next_op = op->common.value.arg; | |
739 | ||
740 | /* next_op points to address op */ | |
741 | ||
742 | next_op = next_op->common.next; | |
743 | ||
744 | /* Evaluate/create the address and length operands */ | |
745 | ||
4be44fcd LB |
746 | status = acpi_ds_create_operands(walk_state, next_op); |
747 | if (ACPI_FAILURE(status)) { | |
748 | return_ACPI_STATUS(status); | |
1da177e4 LT |
749 | } |
750 | ||
751 | /* Resolve the length and address operands to numbers */ | |
752 | ||
4be44fcd LB |
753 | status = acpi_ex_resolve_operands(op->common.aml_opcode, |
754 | ACPI_WALK_OPERANDS, walk_state); | |
755 | if (ACPI_FAILURE(status)) { | |
756 | return_ACPI_STATUS(status); | |
1da177e4 LT |
757 | } |
758 | ||
4be44fcd | 759 | obj_desc = acpi_ns_get_attached_object(node); |
1da177e4 | 760 | if (!obj_desc) { |
4be44fcd | 761 | return_ACPI_STATUS(AE_NOT_EXIST); |
1da177e4 LT |
762 | } |
763 | ||
764 | /* | |
765 | * Get the length operand and save it | |
766 | * (at Top of stack) | |
767 | */ | |
768 | operand_desc = walk_state->operands[walk_state->num_operands - 1]; | |
769 | ||
770 | obj_desc->region.length = (u32) operand_desc->integer.value; | |
4be44fcd | 771 | acpi_ut_remove_reference(operand_desc); |
1da177e4 LT |
772 | |
773 | /* | |
774 | * Get the address and save it | |
775 | * (at top of stack - 1) | |
776 | */ | |
777 | operand_desc = walk_state->operands[walk_state->num_operands - 2]; | |
778 | ||
44f6c012 | 779 | obj_desc->region.address = (acpi_physical_address) |
4be44fcd LB |
780 | operand_desc->integer.value; |
781 | acpi_ut_remove_reference(operand_desc); | |
1da177e4 | 782 | |
b229cf92 | 783 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n", |
4be44fcd | 784 | obj_desc, |
b7f9f042 | 785 | ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address), |
4be44fcd | 786 | obj_desc->region.length)); |
1da177e4 LT |
787 | |
788 | /* Now the address and length are valid for this opregion */ | |
789 | ||
790 | obj_desc->region.flags |= AOPOBJ_DATA_VALID; | |
791 | ||
4be44fcd | 792 | return_ACPI_STATUS(status); |
1da177e4 LT |
793 | } |
794 | ||
941f48bb LM |
795 | /******************************************************************************* |
796 | * | |
797 | * FUNCTION: acpi_ds_eval_table_region_operands | |
798 | * | |
799 | * PARAMETERS: walk_state - Current walk | |
800 | * Op - A valid region Op object | |
801 | * | |
802 | * RETURN: Status | |
803 | * | |
804 | * DESCRIPTION: Get region address and length | |
805 | * Called from acpi_ds_exec_end_op during data_table_region parse tree walk | |
806 | * | |
807 | ******************************************************************************/ | |
808 | ||
809 | acpi_status | |
810 | acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state, | |
811 | union acpi_parse_object *op) | |
812 | { | |
813 | acpi_status status; | |
814 | union acpi_operand_object *obj_desc; | |
815 | union acpi_operand_object **operand; | |
816 | struct acpi_namespace_node *node; | |
817 | union acpi_parse_object *next_op; | |
67a119f9 | 818 | u32 table_index; |
941f48bb LM |
819 | struct acpi_table_header *table; |
820 | ||
821 | ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op); | |
822 | ||
823 | /* | |
824 | * This is where we evaluate the signature_string and oem_iDString | |
825 | * and oem_table_iDString of the data_table_region declaration | |
826 | */ | |
827 | node = op->common.node; | |
828 | ||
829 | /* next_op points to signature_string op */ | |
830 | ||
831 | next_op = op->common.value.arg; | |
832 | ||
833 | /* | |
834 | * Evaluate/create the signature_string and oem_iDString | |
835 | * and oem_table_iDString operands | |
836 | */ | |
837 | status = acpi_ds_create_operands(walk_state, next_op); | |
838 | if (ACPI_FAILURE(status)) { | |
839 | return_ACPI_STATUS(status); | |
840 | } | |
841 | ||
842 | /* | |
843 | * Resolve the signature_string and oem_iDString | |
844 | * and oem_table_iDString operands | |
845 | */ | |
846 | status = acpi_ex_resolve_operands(op->common.aml_opcode, | |
847 | ACPI_WALK_OPERANDS, walk_state); | |
848 | if (ACPI_FAILURE(status)) { | |
849 | return_ACPI_STATUS(status); | |
850 | } | |
851 | ||
941f48bb LM |
852 | operand = &walk_state->operands[0]; |
853 | ||
854 | /* Find the ACPI table */ | |
855 | ||
856 | status = acpi_tb_find_table(operand[0]->string.pointer, | |
857 | operand[1]->string.pointer, | |
858 | operand[2]->string.pointer, &table_index); | |
859 | if (ACPI_FAILURE(status)) { | |
860 | return_ACPI_STATUS(status); | |
861 | } | |
862 | ||
863 | acpi_ut_remove_reference(operand[0]); | |
864 | acpi_ut_remove_reference(operand[1]); | |
865 | acpi_ut_remove_reference(operand[2]); | |
866 | ||
867 | status = acpi_get_table_by_index(table_index, &table); | |
868 | if (ACPI_FAILURE(status)) { | |
869 | return_ACPI_STATUS(status); | |
870 | } | |
871 | ||
872 | obj_desc = acpi_ns_get_attached_object(node); | |
873 | if (!obj_desc) { | |
874 | return_ACPI_STATUS(AE_NOT_EXIST); | |
875 | } | |
876 | ||
877 | obj_desc->region.address = | |
878 | (acpi_physical_address) ACPI_TO_INTEGER(table); | |
879 | obj_desc->region.length = table->length; | |
880 | ||
881 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n", | |
882 | obj_desc, | |
883 | ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address), | |
884 | obj_desc->region.length)); | |
885 | ||
886 | /* Now the address and length are valid for this opregion */ | |
887 | ||
888 | obj_desc->region.flags |= AOPOBJ_DATA_VALID; | |
889 | ||
890 | return_ACPI_STATUS(status); | |
891 | } | |
892 | ||
44f6c012 | 893 | /******************************************************************************* |
1da177e4 LT |
894 | * |
895 | * FUNCTION: acpi_ds_eval_data_object_operands | |
896 | * | |
897 | * PARAMETERS: walk_state - Current walk | |
898 | * Op - A valid data_object Op object | |
899 | * obj_desc - data_object | |
900 | * | |
901 | * RETURN: Status | |
902 | * | |
903 | * DESCRIPTION: Get the operands and complete the following data object types: | |
904 | * Buffer, Package. | |
905 | * | |
44f6c012 | 906 | ******************************************************************************/ |
1da177e4 LT |
907 | |
908 | acpi_status | |
4be44fcd LB |
909 | acpi_ds_eval_data_object_operands(struct acpi_walk_state *walk_state, |
910 | union acpi_parse_object *op, | |
911 | union acpi_operand_object *obj_desc) | |
1da177e4 | 912 | { |
4be44fcd LB |
913 | acpi_status status; |
914 | union acpi_operand_object *arg_desc; | |
915 | u32 length; | |
1da177e4 | 916 | |
b229cf92 | 917 | ACPI_FUNCTION_TRACE(ds_eval_data_object_operands); |
1da177e4 LT |
918 | |
919 | /* The first operand (for all of these data objects) is the length */ | |
920 | ||
773069d4 BM |
921 | /* |
922 | * Set proper index into operand stack for acpi_ds_obj_stack_push | |
923 | * invoked inside acpi_ds_create_operand. | |
924 | */ | |
925 | walk_state->operand_index = walk_state->num_operands; | |
926 | ||
4be44fcd LB |
927 | status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1); |
928 | if (ACPI_FAILURE(status)) { | |
929 | return_ACPI_STATUS(status); | |
1da177e4 LT |
930 | } |
931 | ||
4be44fcd LB |
932 | status = acpi_ex_resolve_operands(walk_state->opcode, |
933 | &(walk_state-> | |
934 | operands[walk_state->num_operands - | |
935 | 1]), walk_state); | |
936 | if (ACPI_FAILURE(status)) { | |
937 | return_ACPI_STATUS(status); | |
1da177e4 LT |
938 | } |
939 | ||
940 | /* Extract length operand */ | |
941 | ||
4be44fcd | 942 | arg_desc = walk_state->operands[walk_state->num_operands - 1]; |
1da177e4 LT |
943 | length = (u32) arg_desc->integer.value; |
944 | ||
945 | /* Cleanup for length operand */ | |
946 | ||
4be44fcd LB |
947 | status = acpi_ds_obj_stack_pop(1, walk_state); |
948 | if (ACPI_FAILURE(status)) { | |
949 | return_ACPI_STATUS(status); | |
1da177e4 LT |
950 | } |
951 | ||
4be44fcd | 952 | acpi_ut_remove_reference(arg_desc); |
1da177e4 LT |
953 | |
954 | /* | |
955 | * Create the actual data object | |
956 | */ | |
957 | switch (op->common.aml_opcode) { | |
958 | case AML_BUFFER_OP: | |
959 | ||
4be44fcd LB |
960 | status = |
961 | acpi_ds_build_internal_buffer_obj(walk_state, op, length, | |
962 | &obj_desc); | |
1da177e4 LT |
963 | break; |
964 | ||
965 | case AML_PACKAGE_OP: | |
966 | case AML_VAR_PACKAGE_OP: | |
967 | ||
4be44fcd LB |
968 | status = |
969 | acpi_ds_build_internal_package_obj(walk_state, op, length, | |
970 | &obj_desc); | |
1da177e4 LT |
971 | break; |
972 | ||
973 | default: | |
4be44fcd | 974 | return_ACPI_STATUS(AE_AML_BAD_OPCODE); |
1da177e4 LT |
975 | } |
976 | ||
4be44fcd | 977 | if (ACPI_SUCCESS(status)) { |
1da177e4 | 978 | /* |
44f6c012 | 979 | * Return the object in the walk_state, unless the parent is a package - |
1da177e4 LT |
980 | * in this case, the return object will be stored in the parse tree |
981 | * for the package. | |
982 | */ | |
983 | if ((!op->common.parent) || | |
4be44fcd LB |
984 | ((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) && |
985 | (op->common.parent->common.aml_opcode != | |
986 | AML_VAR_PACKAGE_OP) | |
fd350943 | 987 | && (op->common.parent->common.aml_opcode != AML_NAME_OP))) { |
1da177e4 LT |
988 | walk_state->result_obj = obj_desc; |
989 | } | |
990 | } | |
991 | ||
4be44fcd | 992 | return_ACPI_STATUS(status); |
1da177e4 LT |
993 | } |
994 | ||
ef805d95 LM |
995 | /******************************************************************************* |
996 | * | |
997 | * FUNCTION: acpi_ds_eval_bank_field_operands | |
998 | * | |
999 | * PARAMETERS: walk_state - Current walk | |
1000 | * Op - A valid bank_field Op object | |
1001 | * | |
1002 | * RETURN: Status | |
1003 | * | |
1004 | * DESCRIPTION: Get bank_field bank_value | |
1005 | * Called from acpi_ds_exec_end_op during bank_field parse tree walk | |
1006 | * | |
1007 | ******************************************************************************/ | |
1008 | ||
1009 | acpi_status | |
1010 | acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state, | |
1011 | union acpi_parse_object *op) | |
1012 | { | |
1013 | acpi_status status; | |
1014 | union acpi_operand_object *obj_desc; | |
1015 | union acpi_operand_object *operand_desc; | |
1016 | struct acpi_namespace_node *node; | |
1017 | union acpi_parse_object *next_op; | |
1018 | union acpi_parse_object *arg; | |
1019 | ||
1020 | ACPI_FUNCTION_TRACE_PTR(ds_eval_bank_field_operands, op); | |
1021 | ||
1022 | /* | |
1023 | * This is where we evaluate the bank_value field of the | |
1024 | * bank_field declaration | |
1025 | */ | |
1026 | ||
1027 | /* next_op points to the op that holds the Region */ | |
1028 | ||
1029 | next_op = op->common.value.arg; | |
1030 | ||
1031 | /* next_op points to the op that holds the Bank Register */ | |
1032 | ||
1033 | next_op = next_op->common.next; | |
1034 | ||
1035 | /* next_op points to the op that holds the Bank Value */ | |
1036 | ||
1037 | next_op = next_op->common.next; | |
1038 | ||
1039 | /* | |
1040 | * Set proper index into operand stack for acpi_ds_obj_stack_push | |
1041 | * invoked inside acpi_ds_create_operand. | |
1042 | * | |
1043 | * We use walk_state->Operands[0] to store the evaluated bank_value | |
1044 | */ | |
1045 | walk_state->operand_index = 0; | |
1046 | ||
1047 | status = acpi_ds_create_operand(walk_state, next_op, 0); | |
1048 | if (ACPI_FAILURE(status)) { | |
1049 | return_ACPI_STATUS(status); | |
1050 | } | |
1051 | ||
1052 | status = acpi_ex_resolve_to_value(&walk_state->operands[0], walk_state); | |
1053 | if (ACPI_FAILURE(status)) { | |
1054 | return_ACPI_STATUS(status); | |
1055 | } | |
1056 | ||
71d993e1 BM |
1057 | ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, |
1058 | acpi_ps_get_opcode_name(op->common.aml_opcode), 1); | |
ef805d95 LM |
1059 | /* |
1060 | * Get the bank_value operand and save it | |
1061 | * (at Top of stack) | |
1062 | */ | |
1063 | operand_desc = walk_state->operands[0]; | |
1064 | ||
1065 | /* Arg points to the start Bank Field */ | |
1066 | ||
1067 | arg = acpi_ps_get_arg(op, 4); | |
1068 | while (arg) { | |
1069 | ||
1070 | /* Ignore OFFSET and ACCESSAS terms here */ | |
1071 | ||
1072 | if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) { | |
1073 | node = arg->common.node; | |
1074 | ||
1075 | obj_desc = acpi_ns_get_attached_object(node); | |
1076 | if (!obj_desc) { | |
1077 | return_ACPI_STATUS(AE_NOT_EXIST); | |
1078 | } | |
1079 | ||
1080 | obj_desc->bank_field.value = | |
1081 | (u32) operand_desc->integer.value; | |
1082 | } | |
1083 | ||
1084 | /* Move to next field in the list */ | |
1085 | ||
1086 | arg = arg->common.next; | |
1087 | } | |
1088 | ||
1089 | acpi_ut_remove_reference(operand_desc); | |
1090 | return_ACPI_STATUS(status); | |
1091 | } | |
1092 | ||
1da177e4 LT |
1093 | /******************************************************************************* |
1094 | * | |
1095 | * FUNCTION: acpi_ds_exec_begin_control_op | |
1096 | * | |
1097 | * PARAMETERS: walk_list - The list that owns the walk stack | |
1098 | * Op - The control Op | |
1099 | * | |
1100 | * RETURN: Status | |
1101 | * | |
1102 | * DESCRIPTION: Handles all control ops encountered during control method | |
1103 | * execution. | |
1104 | * | |
1105 | ******************************************************************************/ | |
1106 | ||
1107 | acpi_status | |
4be44fcd LB |
1108 | acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state, |
1109 | union acpi_parse_object *op) | |
1da177e4 | 1110 | { |
4be44fcd LB |
1111 | acpi_status status = AE_OK; |
1112 | union acpi_generic_state *control_state; | |
1da177e4 | 1113 | |
b229cf92 | 1114 | ACPI_FUNCTION_NAME(ds_exec_begin_control_op); |
1da177e4 | 1115 | |
4be44fcd LB |
1116 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", op, |
1117 | op->common.aml_opcode, walk_state)); | |
1da177e4 LT |
1118 | |
1119 | switch (op->common.aml_opcode) { | |
1da177e4 LT |
1120 | case AML_WHILE_OP: |
1121 | ||
96411a63 BM |
1122 | /* |
1123 | * If this is an additional iteration of a while loop, continue. | |
1124 | * There is no need to allocate a new control state. | |
1125 | */ | |
1126 | if (walk_state->control_state) { | |
1127 | if (walk_state->control_state->control.aml_predicate_start | |
1128 | == (walk_state->parser_state.aml - 1)) { | |
1129 | ||
1130 | /* Reset the state to start-of-loop */ | |
1131 | ||
1132 | walk_state->control_state->common.state = | |
1133 | ACPI_CONTROL_CONDITIONAL_EXECUTING; | |
1134 | break; | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | /*lint -fallthrough */ | |
1139 | ||
1140 | case AML_IF_OP: | |
1141 | ||
1da177e4 LT |
1142 | /* |
1143 | * IF/WHILE: Create a new control state to manage these | |
1144 | * constructs. We need to manage these as a stack, in order | |
1145 | * to handle nesting. | |
1146 | */ | |
4be44fcd | 1147 | control_state = acpi_ut_create_control_state(); |
1da177e4 LT |
1148 | if (!control_state) { |
1149 | status = AE_NO_MEMORY; | |
1150 | break; | |
1151 | } | |
1152 | /* | |
1153 | * Save a pointer to the predicate for multiple executions | |
1154 | * of a loop | |
1155 | */ | |
4be44fcd LB |
1156 | control_state->control.aml_predicate_start = |
1157 | walk_state->parser_state.aml - 1; | |
1158 | control_state->control.package_end = | |
1159 | walk_state->parser_state.pkg_end; | |
1da177e4 LT |
1160 | control_state->control.opcode = op->common.aml_opcode; |
1161 | ||
1da177e4 LT |
1162 | /* Push the control state on this walk's control stack */ |
1163 | ||
4be44fcd LB |
1164 | acpi_ut_push_generic_state(&walk_state->control_state, |
1165 | control_state); | |
1da177e4 LT |
1166 | break; |
1167 | ||
1168 | case AML_ELSE_OP: | |
1169 | ||
1170 | /* Predicate is in the state object */ | |
1171 | /* If predicate is true, the IF was executed, ignore ELSE part */ | |
1172 | ||
1173 | if (walk_state->last_predicate) { | |
1174 | status = AE_CTRL_TRUE; | |
1175 | } | |
1176 | ||
1177 | break; | |
1178 | ||
1179 | case AML_RETURN_OP: | |
1180 | ||
1181 | break; | |
1182 | ||
1183 | default: | |
1184 | break; | |
1185 | } | |
1186 | ||
1187 | return (status); | |
1188 | } | |
1189 | ||
1da177e4 LT |
1190 | /******************************************************************************* |
1191 | * | |
1192 | * FUNCTION: acpi_ds_exec_end_control_op | |
1193 | * | |
1194 | * PARAMETERS: walk_list - The list that owns the walk stack | |
1195 | * Op - The control Op | |
1196 | * | |
1197 | * RETURN: Status | |
1198 | * | |
1199 | * DESCRIPTION: Handles all control ops encountered during control method | |
1200 | * execution. | |
1201 | * | |
1202 | ******************************************************************************/ | |
1203 | ||
1204 | acpi_status | |
4be44fcd LB |
1205 | acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state, |
1206 | union acpi_parse_object * op) | |
1da177e4 | 1207 | { |
4be44fcd LB |
1208 | acpi_status status = AE_OK; |
1209 | union acpi_generic_state *control_state; | |
1da177e4 | 1210 | |
b229cf92 | 1211 | ACPI_FUNCTION_NAME(ds_exec_end_control_op); |
1da177e4 LT |
1212 | |
1213 | switch (op->common.aml_opcode) { | |
1214 | case AML_IF_OP: | |
1215 | ||
4be44fcd | 1216 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op)); |
1da177e4 LT |
1217 | |
1218 | /* | |
1219 | * Save the result of the predicate in case there is an | |
1220 | * ELSE to come | |
1221 | */ | |
1222 | walk_state->last_predicate = | |
4be44fcd | 1223 | (u8) walk_state->control_state->common.value; |
1da177e4 LT |
1224 | |
1225 | /* | |
1226 | * Pop the control state that was created at the start | |
1227 | * of the IF and free it | |
1228 | */ | |
4be44fcd LB |
1229 | control_state = |
1230 | acpi_ut_pop_generic_state(&walk_state->control_state); | |
1231 | acpi_ut_delete_generic_state(control_state); | |
1da177e4 LT |
1232 | break; |
1233 | ||
1da177e4 LT |
1234 | case AML_ELSE_OP: |
1235 | ||
1236 | break; | |
1237 | ||
1da177e4 LT |
1238 | case AML_WHILE_OP: |
1239 | ||
4be44fcd | 1240 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op)); |
1da177e4 | 1241 | |
fc374457 BM |
1242 | control_state = walk_state->control_state; |
1243 | if (control_state->common.value) { | |
1244 | ||
1245 | /* Predicate was true, the body of the loop was just executed */ | |
1246 | ||
1247 | /* | |
1248 | * This loop counter mechanism allows the interpreter to escape | |
1249 | * possibly infinite loops. This can occur in poorly written AML | |
1250 | * when the hardware does not respond within a while loop and the | |
1251 | * loop does not implement a timeout. | |
1252 | */ | |
1253 | control_state->control.loop_count++; | |
1254 | if (control_state->control.loop_count > | |
1255 | ACPI_MAX_LOOP_ITERATIONS) { | |
1256 | status = AE_AML_INFINITE_LOOP; | |
1257 | break; | |
1258 | } | |
1da177e4 | 1259 | |
fc374457 BM |
1260 | /* |
1261 | * Go back and evaluate the predicate and maybe execute the loop | |
1262 | * another time | |
1263 | */ | |
1da177e4 | 1264 | status = AE_CTRL_PENDING; |
96411a63 | 1265 | walk_state->aml_last_while = |
fc374457 | 1266 | control_state->control.aml_predicate_start; |
96411a63 | 1267 | break; |
1da177e4 LT |
1268 | } |
1269 | ||
96411a63 BM |
1270 | /* Predicate was false, terminate this while loop */ |
1271 | ||
4be44fcd LB |
1272 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
1273 | "[WHILE_OP] termination! Op=%p\n", op)); | |
1da177e4 LT |
1274 | |
1275 | /* Pop this control state and free it */ | |
1276 | ||
4be44fcd LB |
1277 | control_state = |
1278 | acpi_ut_pop_generic_state(&walk_state->control_state); | |
4be44fcd | 1279 | acpi_ut_delete_generic_state(control_state); |
1da177e4 LT |
1280 | break; |
1281 | ||
1da177e4 LT |
1282 | case AML_RETURN_OP: |
1283 | ||
4be44fcd LB |
1284 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
1285 | "[RETURN_OP] Op=%p Arg=%p\n", op, | |
1286 | op->common.value.arg)); | |
1da177e4 LT |
1287 | |
1288 | /* | |
1289 | * One optional operand -- the return value | |
1290 | * It can be either an immediate operand or a result that | |
1291 | * has been bubbled up the tree | |
1292 | */ | |
1293 | if (op->common.value.arg) { | |
52fc0b02 | 1294 | |
1da177e4 LT |
1295 | /* Since we have a real Return(), delete any implicit return */ |
1296 | ||
4be44fcd | 1297 | acpi_ds_clear_implicit_return(walk_state); |
1da177e4 LT |
1298 | |
1299 | /* Return statement has an immediate operand */ | |
1300 | ||
4be44fcd LB |
1301 | status = |
1302 | acpi_ds_create_operands(walk_state, | |
1303 | op->common.value.arg); | |
1304 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1305 | return (status); |
1306 | } | |
1307 | ||
1308 | /* | |
1309 | * If value being returned is a Reference (such as | |
1310 | * an arg or local), resolve it now because it may | |
1311 | * cease to exist at the end of the method. | |
1312 | */ | |
4be44fcd LB |
1313 | status = |
1314 | acpi_ex_resolve_to_value(&walk_state->operands[0], | |
1315 | walk_state); | |
1316 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1317 | return (status); |
1318 | } | |
1319 | ||
1320 | /* | |
1321 | * Get the return value and save as the last result | |
1322 | * value. This is the only place where walk_state->return_desc | |
1323 | * is set to anything other than zero! | |
1324 | */ | |
1325 | walk_state->return_desc = walk_state->operands[0]; | |
773069d4 | 1326 | } else if (walk_state->result_count) { |
52fc0b02 | 1327 | |
1da177e4 LT |
1328 | /* Since we have a real Return(), delete any implicit return */ |
1329 | ||
4be44fcd | 1330 | acpi_ds_clear_implicit_return(walk_state); |
1da177e4 LT |
1331 | |
1332 | /* | |
1333 | * The return value has come from a previous calculation. | |
1334 | * | |
1335 | * If value being returned is a Reference (such as | |
1336 | * an arg or local), resolve it now because it may | |
1337 | * cease to exist at the end of the method. | |
1338 | * | |
1339 | * Allow references created by the Index operator to return unchanged. | |
1340 | */ | |
4be44fcd LB |
1341 | if ((ACPI_GET_DESCRIPTOR_TYPE |
1342 | (walk_state->results->results.obj_desc[0]) == | |
1343 | ACPI_DESC_TYPE_OPERAND) | |
3371c19c BM |
1344 | && ((walk_state->results->results.obj_desc[0])-> |
1345 | common.type == ACPI_TYPE_LOCAL_REFERENCE) | |
4be44fcd | 1346 | && ((walk_state->results->results.obj_desc[0])-> |
1044f1f6 | 1347 | reference.class != ACPI_REFCLASS_INDEX)) { |
4be44fcd LB |
1348 | status = |
1349 | acpi_ex_resolve_to_value(&walk_state-> | |
1350 | results->results. | |
1351 | obj_desc[0], | |
1352 | walk_state); | |
1353 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1354 | return (status); |
1355 | } | |
1356 | } | |
1357 | ||
4be44fcd LB |
1358 | walk_state->return_desc = |
1359 | walk_state->results->results.obj_desc[0]; | |
1360 | } else { | |
1da177e4 LT |
1361 | /* No return operand */ |
1362 | ||
1363 | if (walk_state->num_operands) { | |
4be44fcd LB |
1364 | acpi_ut_remove_reference(walk_state-> |
1365 | operands[0]); | |
1da177e4 LT |
1366 | } |
1367 | ||
4be44fcd LB |
1368 | walk_state->operands[0] = NULL; |
1369 | walk_state->num_operands = 0; | |
1370 | walk_state->return_desc = NULL; | |
1da177e4 LT |
1371 | } |
1372 | ||
4be44fcd | 1373 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
b229cf92 | 1374 | "Completed RETURN_OP State=%p, RetVal=%p\n", |
4be44fcd | 1375 | walk_state, walk_state->return_desc)); |
1da177e4 LT |
1376 | |
1377 | /* End the control method execution right now */ | |
1378 | ||
1379 | status = AE_CTRL_TERMINATE; | |
1380 | break; | |
1381 | ||
1da177e4 LT |
1382 | case AML_NOOP_OP: |
1383 | ||
1384 | /* Just do nothing! */ | |
1385 | break; | |
1386 | ||
1da177e4 LT |
1387 | case AML_BREAK_POINT_OP: |
1388 | ||
1389 | /* Call up to the OS service layer to handle this */ | |
1390 | ||
4be44fcd LB |
1391 | status = |
1392 | acpi_os_signal(ACPI_SIGNAL_BREAKPOINT, | |
1393 | "Executed AML Breakpoint opcode"); | |
1da177e4 LT |
1394 | |
1395 | /* If and when it returns, all done. */ | |
1396 | ||
1397 | break; | |
1398 | ||
1da177e4 | 1399 | case AML_BREAK_OP: |
4be44fcd | 1400 | case AML_CONTINUE_OP: /* ACPI 2.0 */ |
1da177e4 LT |
1401 | |
1402 | /* Pop and delete control states until we find a while */ | |
1403 | ||
1404 | while (walk_state->control_state && | |
4be44fcd LB |
1405 | (walk_state->control_state->control.opcode != |
1406 | AML_WHILE_OP)) { | |
1407 | control_state = | |
1408 | acpi_ut_pop_generic_state(&walk_state-> | |
1409 | control_state); | |
1410 | acpi_ut_delete_generic_state(control_state); | |
1da177e4 LT |
1411 | } |
1412 | ||
1413 | /* No while found? */ | |
1414 | ||
1415 | if (!walk_state->control_state) { | |
1416 | return (AE_AML_NO_WHILE); | |
1417 | } | |
1418 | ||
1419 | /* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */ | |
1420 | ||
4be44fcd LB |
1421 | walk_state->aml_last_while = |
1422 | walk_state->control_state->control.package_end; | |
1da177e4 LT |
1423 | |
1424 | /* Return status depending on opcode */ | |
1425 | ||
1426 | if (op->common.aml_opcode == AML_BREAK_OP) { | |
1427 | status = AE_CTRL_BREAK; | |
4be44fcd | 1428 | } else { |
1da177e4 LT |
1429 | status = AE_CTRL_CONTINUE; |
1430 | } | |
1431 | break; | |
1432 | ||
1da177e4 LT |
1433 | default: |
1434 | ||
b8e4d893 BM |
1435 | ACPI_ERROR((AE_INFO, "Unknown control opcode=%X Op=%p", |
1436 | op->common.aml_opcode, op)); | |
1da177e4 LT |
1437 | |
1438 | status = AE_AML_BAD_OPCODE; | |
1439 | break; | |
1440 | } | |
1441 | ||
1442 | return (status); | |
1443 | } |