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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsfield - Dispatcher field routines | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
4a90c7e8 | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
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 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/amlcode.h> | |
46 | #include <acpi/acdispat.h> | |
47 | #include <acpi/acinterp.h> | |
48 | #include <acpi/acnamesp.h> | |
49 | #include <acpi/acparser.h> | |
50 | ||
1da177e4 | 51 | #define _COMPONENT ACPI_DISPATCHER |
4be44fcd | 52 | ACPI_MODULE_NAME("dsfield") |
1da177e4 | 53 | |
44f6c012 | 54 | /* Local prototypes */ |
44f6c012 | 55 | static acpi_status |
4be44fcd LB |
56 | acpi_ds_get_field_names(struct acpi_create_field_info *info, |
57 | struct acpi_walk_state *walk_state, | |
58 | union acpi_parse_object *arg); | |
1da177e4 LT |
59 | |
60 | /******************************************************************************* | |
61 | * | |
62 | * FUNCTION: acpi_ds_create_buffer_field | |
63 | * | |
44f6c012 | 64 | * PARAMETERS: Op - Current parse op (create_xXField) |
1da177e4 LT |
65 | * walk_state - Current state |
66 | * | |
67 | * RETURN: Status | |
68 | * | |
69 | * DESCRIPTION: Execute the create_field operators: | |
70 | * create_bit_field_op, | |
71 | * create_byte_field_op, | |
72 | * create_word_field_op, | |
73 | * create_dword_field_op, | |
74 | * create_qword_field_op, | |
44f6c012 | 75 | * create_field_op (all of which define a field in a buffer) |
1da177e4 LT |
76 | * |
77 | ******************************************************************************/ | |
78 | ||
79 | acpi_status | |
4be44fcd LB |
80 | acpi_ds_create_buffer_field(union acpi_parse_object *op, |
81 | struct acpi_walk_state *walk_state) | |
1da177e4 | 82 | { |
4be44fcd LB |
83 | union acpi_parse_object *arg; |
84 | struct acpi_namespace_node *node; | |
85 | acpi_status status; | |
86 | union acpi_operand_object *obj_desc; | |
87 | union acpi_operand_object *second_desc = NULL; | |
88 | u32 flags; | |
1da177e4 | 89 | |
b229cf92 | 90 | ACPI_FUNCTION_TRACE(ds_create_buffer_field); |
1da177e4 LT |
91 | |
92 | /* Get the name_string argument */ | |
93 | ||
94 | if (op->common.aml_opcode == AML_CREATE_FIELD_OP) { | |
4be44fcd LB |
95 | arg = acpi_ps_get_arg(op, 3); |
96 | } else { | |
1da177e4 LT |
97 | /* Create Bit/Byte/Word/Dword field */ |
98 | ||
4be44fcd | 99 | arg = acpi_ps_get_arg(op, 2); |
1da177e4 LT |
100 | } |
101 | ||
102 | if (!arg) { | |
4be44fcd | 103 | return_ACPI_STATUS(AE_AML_NO_OPERAND); |
1da177e4 LT |
104 | } |
105 | ||
106 | if (walk_state->deferred_node) { | |
107 | node = walk_state->deferred_node; | |
108 | status = AE_OK; | |
4be44fcd | 109 | } else { |
1da177e4 LT |
110 | /* |
111 | * During the load phase, we want to enter the name of the field into | |
112 | * the namespace. During the execute phase (when we evaluate the size | |
113 | * operand), we want to lookup the name | |
114 | */ | |
115 | if (walk_state->parse_flags & ACPI_PARSE_EXECUTE) { | |
116 | flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE; | |
4be44fcd | 117 | } else { |
44f6c012 | 118 | flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | |
4be44fcd | 119 | ACPI_NS_ERROR_IF_FOUND; |
1da177e4 LT |
120 | } |
121 | ||
122 | /* | |
123 | * Enter the name_string into the namespace | |
124 | */ | |
4be44fcd LB |
125 | status = |
126 | acpi_ns_lookup(walk_state->scope_info, | |
127 | arg->common.value.string, ACPI_TYPE_ANY, | |
128 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
129 | &(node)); | |
130 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 131 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
4be44fcd | 132 | return_ACPI_STATUS(status); |
1da177e4 LT |
133 | } |
134 | } | |
135 | ||
44f6c012 RM |
136 | /* We could put the returned object (Node) on the object stack for later, |
137 | * but for now, we will put it in the "op" object that the parser uses, | |
138 | * so we can get it again at the end of this scope | |
1da177e4 LT |
139 | */ |
140 | op->common.node = node; | |
141 | ||
142 | /* | |
44f6c012 RM |
143 | * If there is no object attached to the node, this node was just created |
144 | * and we need to create the field object. Otherwise, this was a lookup | |
145 | * of an existing node and we don't want to create the field object again. | |
1da177e4 | 146 | */ |
4be44fcd | 147 | obj_desc = acpi_ns_get_attached_object(node); |
1da177e4 | 148 | if (obj_desc) { |
4be44fcd | 149 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
150 | } |
151 | ||
152 | /* | |
153 | * The Field definition is not fully parsed at this time. | |
154 | * (We must save the address of the AML for the buffer and index operands) | |
155 | */ | |
156 | ||
157 | /* Create the buffer field object */ | |
158 | ||
4be44fcd | 159 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER_FIELD); |
1da177e4 LT |
160 | if (!obj_desc) { |
161 | status = AE_NO_MEMORY; | |
162 | goto cleanup; | |
163 | } | |
164 | ||
165 | /* | |
166 | * Remember location in AML stream of the field unit | |
167 | * opcode and operands -- since the buffer and index | |
168 | * operands must be evaluated. | |
169 | */ | |
4be44fcd | 170 | second_desc = obj_desc->common.next_object; |
1da177e4 LT |
171 | second_desc->extra.aml_start = op->named.data; |
172 | second_desc->extra.aml_length = op->named.length; | |
173 | obj_desc->buffer_field.node = node; | |
174 | ||
175 | /* Attach constructed field descriptors to parent node */ | |
176 | ||
4be44fcd LB |
177 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_BUFFER_FIELD); |
178 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
179 | goto cleanup; |
180 | } | |
181 | ||
4be44fcd | 182 | cleanup: |
1da177e4 LT |
183 | |
184 | /* Remove local reference to the object */ | |
185 | ||
4be44fcd LB |
186 | acpi_ut_remove_reference(obj_desc); |
187 | return_ACPI_STATUS(status); | |
1da177e4 LT |
188 | } |
189 | ||
1da177e4 LT |
190 | /******************************************************************************* |
191 | * | |
192 | * FUNCTION: acpi_ds_get_field_names | |
193 | * | |
194 | * PARAMETERS: Info - create_field info structure | |
195 | * ` walk_state - Current method state | |
196 | * Arg - First parser arg for the field name list | |
197 | * | |
198 | * RETURN: Status | |
199 | * | |
200 | * DESCRIPTION: Process all named fields in a field declaration. Names are | |
201 | * entered into the namespace. | |
202 | * | |
203 | ******************************************************************************/ | |
204 | ||
44f6c012 | 205 | static acpi_status |
4be44fcd LB |
206 | acpi_ds_get_field_names(struct acpi_create_field_info *info, |
207 | struct acpi_walk_state *walk_state, | |
208 | union acpi_parse_object *arg) | |
1da177e4 | 209 | { |
4be44fcd LB |
210 | acpi_status status; |
211 | acpi_integer position; | |
1da177e4 | 212 | |
b229cf92 | 213 | ACPI_FUNCTION_TRACE_PTR(ds_get_field_names, info); |
1da177e4 LT |
214 | |
215 | /* First field starts at bit zero */ | |
216 | ||
217 | info->field_bit_position = 0; | |
218 | ||
219 | /* Process all elements in the field list (of parse nodes) */ | |
220 | ||
221 | while (arg) { | |
222 | /* | |
223 | * Three types of field elements are handled: | |
224 | * 1) Offset - specifies a bit offset | |
225 | * 2) access_as - changes the access mode | |
226 | * 3) Name - Enters a new named field into the namespace | |
227 | */ | |
228 | switch (arg->common.aml_opcode) { | |
229 | case AML_INT_RESERVEDFIELD_OP: | |
230 | ||
231 | position = (acpi_integer) info->field_bit_position | |
4be44fcd | 232 | + (acpi_integer) arg->common.value.size; |
1da177e4 LT |
233 | |
234 | if (position > ACPI_UINT32_MAX) { | |
b8e4d893 BM |
235 | ACPI_ERROR((AE_INFO, |
236 | "Bit offset within field too large (> 0xFFFFFFFF)")); | |
4be44fcd | 237 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
238 | } |
239 | ||
240 | info->field_bit_position = (u32) position; | |
241 | break; | |
242 | ||
1da177e4 LT |
243 | case AML_INT_ACCESSFIELD_OP: |
244 | ||
245 | /* | |
246 | * Get a new access_type and access_attribute -- to be used for all | |
44f6c012 RM |
247 | * field units that follow, until field end or another access_as |
248 | * keyword. | |
1da177e4 | 249 | * |
44f6c012 RM |
250 | * In field_flags, preserve the flag bits other than the |
251 | * ACCESS_TYPE bits | |
1da177e4 | 252 | */ |
44f6c012 | 253 | info->field_flags = (u8) |
4be44fcd LB |
254 | ((info-> |
255 | field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) | | |
256 | ((u8) ((u32) arg->common.value.integer >> 8))); | |
1da177e4 LT |
257 | |
258 | info->attribute = (u8) (arg->common.value.integer); | |
259 | break; | |
260 | ||
1da177e4 LT |
261 | case AML_INT_NAMEDFIELD_OP: |
262 | ||
263 | /* Lookup the name */ | |
264 | ||
4be44fcd LB |
265 | status = acpi_ns_lookup(walk_state->scope_info, |
266 | (char *)&arg->named.name, | |
267 | info->field_type, | |
268 | ACPI_IMODE_EXECUTE, | |
269 | ACPI_NS_DONT_OPEN_SCOPE, | |
270 | walk_state, &info->field_node); | |
271 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
272 | ACPI_ERROR_NAMESPACE((char *)&arg->named.name, |
273 | status); | |
1da177e4 | 274 | if (status != AE_ALREADY_EXISTS) { |
4be44fcd | 275 | return_ACPI_STATUS(status); |
1da177e4 LT |
276 | } |
277 | ||
278 | /* Already exists, ignore error */ | |
4be44fcd | 279 | } else { |
1da177e4 LT |
280 | arg->common.node = info->field_node; |
281 | info->field_bit_length = arg->common.value.size; | |
282 | ||
283 | /* Create and initialize an object for the new Field Node */ | |
284 | ||
4be44fcd LB |
285 | status = acpi_ex_prep_field_value(info); |
286 | if (ACPI_FAILURE(status)) { | |
287 | return_ACPI_STATUS(status); | |
1da177e4 LT |
288 | } |
289 | } | |
290 | ||
291 | /* Keep track of bit position for the next field */ | |
292 | ||
293 | position = (acpi_integer) info->field_bit_position | |
4be44fcd | 294 | + (acpi_integer) arg->common.value.size; |
1da177e4 LT |
295 | |
296 | if (position > ACPI_UINT32_MAX) { | |
b8e4d893 BM |
297 | ACPI_ERROR((AE_INFO, |
298 | "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)", | |
299 | ACPI_CAST_PTR(char, | |
300 | &info->field_node-> | |
301 | name))); | |
4be44fcd | 302 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
303 | } |
304 | ||
305 | info->field_bit_position += info->field_bit_length; | |
306 | break; | |
307 | ||
1da177e4 LT |
308 | default: |
309 | ||
b8e4d893 BM |
310 | ACPI_ERROR((AE_INFO, |
311 | "Invalid opcode in field list: %X", | |
312 | arg->common.aml_opcode)); | |
4be44fcd | 313 | return_ACPI_STATUS(AE_AML_BAD_OPCODE); |
1da177e4 LT |
314 | } |
315 | ||
316 | arg = arg->common.next; | |
317 | } | |
318 | ||
4be44fcd | 319 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
320 | } |
321 | ||
1da177e4 LT |
322 | /******************************************************************************* |
323 | * | |
324 | * FUNCTION: acpi_ds_create_field | |
325 | * | |
326 | * PARAMETERS: Op - Op containing the Field definition and args | |
327 | * region_node - Object for the containing Operation Region | |
328 | * ` walk_state - Current method state | |
329 | * | |
330 | * RETURN: Status | |
331 | * | |
332 | * DESCRIPTION: Create a new field in the specified operation region | |
333 | * | |
334 | ******************************************************************************/ | |
335 | ||
336 | acpi_status | |
4be44fcd LB |
337 | acpi_ds_create_field(union acpi_parse_object *op, |
338 | struct acpi_namespace_node *region_node, | |
339 | struct acpi_walk_state *walk_state) | |
1da177e4 | 340 | { |
4be44fcd LB |
341 | acpi_status status; |
342 | union acpi_parse_object *arg; | |
343 | struct acpi_create_field_info info; | |
1da177e4 | 344 | |
b229cf92 | 345 | ACPI_FUNCTION_TRACE_PTR(ds_create_field, op); |
1da177e4 LT |
346 | |
347 | /* First arg is the name of the parent op_region (must already exist) */ | |
348 | ||
349 | arg = op->common.value.arg; | |
350 | if (!region_node) { | |
4be44fcd LB |
351 | status = |
352 | acpi_ns_lookup(walk_state->scope_info, | |
353 | arg->common.value.name, ACPI_TYPE_REGION, | |
354 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, | |
355 | walk_state, ®ion_node); | |
356 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 357 | ACPI_ERROR_NAMESPACE(arg->common.value.name, status); |
4be44fcd | 358 | return_ACPI_STATUS(status); |
1da177e4 LT |
359 | } |
360 | } | |
361 | ||
362 | /* Second arg is the field flags */ | |
363 | ||
364 | arg = arg->common.next; | |
365 | info.field_flags = (u8) arg->common.value.integer; | |
366 | info.attribute = 0; | |
367 | ||
368 | /* Each remaining arg is a Named Field */ | |
369 | ||
370 | info.field_type = ACPI_TYPE_LOCAL_REGION_FIELD; | |
371 | info.region_node = region_node; | |
372 | ||
4be44fcd | 373 | status = acpi_ds_get_field_names(&info, walk_state, arg->common.next); |
1da177e4 | 374 | |
4be44fcd | 375 | return_ACPI_STATUS(status); |
1da177e4 LT |
376 | } |
377 | ||
1da177e4 LT |
378 | /******************************************************************************* |
379 | * | |
380 | * FUNCTION: acpi_ds_init_field_objects | |
381 | * | |
382 | * PARAMETERS: Op - Op containing the Field definition and args | |
383 | * ` walk_state - Current method state | |
384 | * | |
385 | * RETURN: Status | |
386 | * | |
387 | * DESCRIPTION: For each "Field Unit" name in the argument list that is | |
388 | * part of the field declaration, enter the name into the | |
389 | * namespace. | |
390 | * | |
391 | ******************************************************************************/ | |
392 | ||
393 | acpi_status | |
4be44fcd LB |
394 | acpi_ds_init_field_objects(union acpi_parse_object *op, |
395 | struct acpi_walk_state *walk_state) | |
1da177e4 | 396 | { |
4be44fcd LB |
397 | acpi_status status; |
398 | union acpi_parse_object *arg = NULL; | |
399 | struct acpi_namespace_node *node; | |
400 | u8 type = 0; | |
1da177e4 | 401 | |
b229cf92 | 402 | ACPI_FUNCTION_TRACE_PTR(ds_init_field_objects, op); |
1da177e4 LT |
403 | |
404 | switch (walk_state->opcode) { | |
405 | case AML_FIELD_OP: | |
4be44fcd | 406 | arg = acpi_ps_get_arg(op, 2); |
1da177e4 LT |
407 | type = ACPI_TYPE_LOCAL_REGION_FIELD; |
408 | break; | |
409 | ||
410 | case AML_BANK_FIELD_OP: | |
4be44fcd | 411 | arg = acpi_ps_get_arg(op, 4); |
1da177e4 LT |
412 | type = ACPI_TYPE_LOCAL_BANK_FIELD; |
413 | break; | |
414 | ||
415 | case AML_INDEX_FIELD_OP: | |
4be44fcd | 416 | arg = acpi_ps_get_arg(op, 3); |
1da177e4 LT |
417 | type = ACPI_TYPE_LOCAL_INDEX_FIELD; |
418 | break; | |
419 | ||
420 | default: | |
4be44fcd | 421 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
1da177e4 LT |
422 | } |
423 | ||
424 | /* | |
425 | * Walk the list of entries in the field_list | |
426 | */ | |
427 | while (arg) { | |
52fc0b02 | 428 | |
1da177e4 LT |
429 | /* Ignore OFFSET and ACCESSAS terms here */ |
430 | ||
431 | if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) { | |
4be44fcd LB |
432 | status = acpi_ns_lookup(walk_state->scope_info, |
433 | (char *)&arg->named.name, | |
434 | type, ACPI_IMODE_LOAD_PASS1, | |
435 | ACPI_NS_NO_UPSEARCH | | |
436 | ACPI_NS_DONT_OPEN_SCOPE | | |
437 | ACPI_NS_ERROR_IF_FOUND, | |
438 | walk_state, &node); | |
439 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
440 | ACPI_ERROR_NAMESPACE((char *)&arg->named.name, |
441 | status); | |
1da177e4 | 442 | if (status != AE_ALREADY_EXISTS) { |
4be44fcd | 443 | return_ACPI_STATUS(status); |
1da177e4 LT |
444 | } |
445 | ||
446 | /* Name already exists, just ignore this error */ | |
447 | ||
448 | status = AE_OK; | |
449 | } | |
450 | ||
451 | arg->common.node = node; | |
452 | } | |
453 | ||
454 | /* Move to next field in the list */ | |
455 | ||
456 | arg = arg->common.next; | |
457 | } | |
458 | ||
4be44fcd | 459 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
460 | } |
461 | ||
1da177e4 LT |
462 | /******************************************************************************* |
463 | * | |
464 | * FUNCTION: acpi_ds_create_bank_field | |
465 | * | |
466 | * PARAMETERS: Op - Op containing the Field definition and args | |
467 | * region_node - Object for the containing Operation Region | |
468 | * ` walk_state - Current method state | |
469 | * | |
470 | * RETURN: Status | |
471 | * | |
472 | * DESCRIPTION: Create a new bank field in the specified operation region | |
473 | * | |
474 | ******************************************************************************/ | |
475 | ||
476 | acpi_status | |
4be44fcd LB |
477 | acpi_ds_create_bank_field(union acpi_parse_object *op, |
478 | struct acpi_namespace_node *region_node, | |
479 | struct acpi_walk_state *walk_state) | |
1da177e4 | 480 | { |
4be44fcd LB |
481 | acpi_status status; |
482 | union acpi_parse_object *arg; | |
483 | struct acpi_create_field_info info; | |
1da177e4 | 484 | |
b229cf92 | 485 | ACPI_FUNCTION_TRACE_PTR(ds_create_bank_field, op); |
1da177e4 LT |
486 | |
487 | /* First arg is the name of the parent op_region (must already exist) */ | |
488 | ||
489 | arg = op->common.value.arg; | |
490 | if (!region_node) { | |
4be44fcd LB |
491 | status = |
492 | acpi_ns_lookup(walk_state->scope_info, | |
493 | arg->common.value.name, ACPI_TYPE_REGION, | |
494 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, | |
495 | walk_state, ®ion_node); | |
496 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 497 | ACPI_ERROR_NAMESPACE(arg->common.value.name, status); |
4be44fcd | 498 | return_ACPI_STATUS(status); |
1da177e4 LT |
499 | } |
500 | } | |
501 | ||
502 | /* Second arg is the Bank Register (Field) (must already exist) */ | |
503 | ||
504 | arg = arg->common.next; | |
4be44fcd LB |
505 | status = |
506 | acpi_ns_lookup(walk_state->scope_info, arg->common.value.string, | |
507 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, | |
508 | ACPI_NS_SEARCH_PARENT, walk_state, | |
509 | &info.register_node); | |
510 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 511 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
4be44fcd | 512 | return_ACPI_STATUS(status); |
1da177e4 LT |
513 | } |
514 | ||
515 | /* Third arg is the bank_value */ | |
516 | ||
517 | arg = arg->common.next; | |
518 | info.bank_value = (u32) arg->common.value.integer; | |
519 | ||
520 | /* Fourth arg is the field flags */ | |
521 | ||
522 | arg = arg->common.next; | |
523 | info.field_flags = (u8) arg->common.value.integer; | |
524 | ||
525 | /* Each remaining arg is a Named Field */ | |
526 | ||
527 | info.field_type = ACPI_TYPE_LOCAL_BANK_FIELD; | |
528 | info.region_node = region_node; | |
529 | ||
4be44fcd | 530 | status = acpi_ds_get_field_names(&info, walk_state, arg->common.next); |
1da177e4 | 531 | |
4be44fcd | 532 | return_ACPI_STATUS(status); |
1da177e4 LT |
533 | } |
534 | ||
1da177e4 LT |
535 | /******************************************************************************* |
536 | * | |
537 | * FUNCTION: acpi_ds_create_index_field | |
538 | * | |
539 | * PARAMETERS: Op - Op containing the Field definition and args | |
540 | * region_node - Object for the containing Operation Region | |
541 | * ` walk_state - Current method state | |
542 | * | |
543 | * RETURN: Status | |
544 | * | |
545 | * DESCRIPTION: Create a new index field in the specified operation region | |
546 | * | |
547 | ******************************************************************************/ | |
548 | ||
549 | acpi_status | |
4be44fcd LB |
550 | acpi_ds_create_index_field(union acpi_parse_object *op, |
551 | struct acpi_namespace_node *region_node, | |
552 | struct acpi_walk_state *walk_state) | |
1da177e4 | 553 | { |
4be44fcd LB |
554 | acpi_status status; |
555 | union acpi_parse_object *arg; | |
556 | struct acpi_create_field_info info; | |
1da177e4 | 557 | |
b229cf92 | 558 | ACPI_FUNCTION_TRACE_PTR(ds_create_index_field, op); |
1da177e4 LT |
559 | |
560 | /* First arg is the name of the Index register (must already exist) */ | |
561 | ||
562 | arg = op->common.value.arg; | |
4be44fcd LB |
563 | status = |
564 | acpi_ns_lookup(walk_state->scope_info, arg->common.value.string, | |
565 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, | |
566 | ACPI_NS_SEARCH_PARENT, walk_state, | |
567 | &info.register_node); | |
568 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 569 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
4be44fcd | 570 | return_ACPI_STATUS(status); |
1da177e4 LT |
571 | } |
572 | ||
573 | /* Second arg is the data register (must already exist) */ | |
574 | ||
575 | arg = arg->common.next; | |
4be44fcd LB |
576 | status = |
577 | acpi_ns_lookup(walk_state->scope_info, arg->common.value.string, | |
578 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, | |
579 | ACPI_NS_SEARCH_PARENT, walk_state, | |
580 | &info.data_register_node); | |
581 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 582 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
4be44fcd | 583 | return_ACPI_STATUS(status); |
1da177e4 LT |
584 | } |
585 | ||
586 | /* Next arg is the field flags */ | |
587 | ||
588 | arg = arg->common.next; | |
589 | info.field_flags = (u8) arg->common.value.integer; | |
590 | ||
591 | /* Each remaining arg is a Named Field */ | |
592 | ||
593 | info.field_type = ACPI_TYPE_LOCAL_INDEX_FIELD; | |
594 | info.region_node = region_node; | |
595 | ||
4be44fcd | 596 | status = acpi_ds_get_field_names(&info, walk_state, arg->common.next); |
1da177e4 | 597 | |
4be44fcd | 598 | return_ACPI_STATUS(status); |
1da177e4 | 599 | } |