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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: uteval - Object evaluation | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
9 | * All rights reserved. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/acnamesp.h> | |
46 | #include <acpi/acinterp.h> | |
47 | ||
1da177e4 | 48 | #define _COMPONENT ACPI_UTILITIES |
4be44fcd | 49 | ACPI_MODULE_NAME("uteval") |
1da177e4 | 50 | |
44f6c012 | 51 | /* Local prototypes */ |
44f6c012 | 52 | static void |
4be44fcd | 53 | acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length); |
44f6c012 RM |
54 | |
55 | static acpi_status | |
4be44fcd LB |
56 | acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc, |
57 | struct acpi_compatible_id *one_cid); | |
1da177e4 LT |
58 | |
59 | /******************************************************************************* | |
60 | * | |
61 | * FUNCTION: acpi_ut_osi_implementation | |
62 | * | |
63 | * PARAMETERS: walk_state - Current walk state | |
64 | * | |
65 | * RETURN: Status | |
66 | * | |
67 | * DESCRIPTION: Implementation of _OSI predefined control method | |
68 | * Supported = _OSI (String) | |
69 | * | |
70 | ******************************************************************************/ | |
71 | ||
4be44fcd | 72 | acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state) |
1da177e4 | 73 | { |
4be44fcd LB |
74 | union acpi_operand_object *string_desc; |
75 | union acpi_operand_object *return_desc; | |
76 | acpi_native_uint i; | |
1da177e4 | 77 | |
4be44fcd | 78 | ACPI_FUNCTION_TRACE("ut_osi_implementation"); |
1da177e4 LT |
79 | |
80 | /* Validate the string input argument */ | |
81 | ||
82 | string_desc = walk_state->arguments[0].object; | |
83 | if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) { | |
4be44fcd | 84 | return_ACPI_STATUS(AE_TYPE); |
1da177e4 LT |
85 | } |
86 | ||
87 | /* Create a return object (Default value = 0) */ | |
88 | ||
4be44fcd | 89 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
1da177e4 | 90 | if (!return_desc) { |
4be44fcd | 91 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
92 | } |
93 | ||
94 | /* Compare input string to table of supported strings */ | |
95 | ||
96 | for (i = 0; i < ACPI_NUM_OSI_STRINGS; i++) { | |
4be44fcd LB |
97 | if (!ACPI_STRCMP(string_desc->string.pointer, |
98 | (char *)acpi_gbl_valid_osi_strings[i])) { | |
1da177e4 LT |
99 | /* This string is supported */ |
100 | ||
101 | return_desc->integer.value = 0xFFFFFFFF; | |
102 | break; | |
103 | } | |
104 | } | |
105 | ||
106 | walk_state->return_desc = return_desc; | |
4be44fcd | 107 | return_ACPI_STATUS(AE_CTRL_TERMINATE); |
1da177e4 LT |
108 | } |
109 | ||
1da177e4 LT |
110 | /******************************************************************************* |
111 | * | |
112 | * FUNCTION: acpi_ut_evaluate_object | |
113 | * | |
114 | * PARAMETERS: prefix_node - Starting node | |
115 | * Path - Path to object from starting node | |
116 | * expected_return_types - Bitmap of allowed return types | |
117 | * return_desc - Where a return value is stored | |
118 | * | |
119 | * RETURN: Status | |
120 | * | |
121 | * DESCRIPTION: Evaluates a namespace object and verifies the type of the | |
122 | * return object. Common code that simplifies accessing objects | |
123 | * that have required return objects of fixed types. | |
124 | * | |
125 | * NOTE: Internal function, no parameter validation | |
126 | * | |
127 | ******************************************************************************/ | |
128 | ||
129 | acpi_status | |
4be44fcd LB |
130 | acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node, |
131 | char *path, | |
132 | u32 expected_return_btypes, | |
133 | union acpi_operand_object **return_desc) | |
1da177e4 | 134 | { |
4be44fcd LB |
135 | struct acpi_parameter_info info; |
136 | acpi_status status; | |
137 | u32 return_btype; | |
1da177e4 | 138 | |
4be44fcd | 139 | ACPI_FUNCTION_TRACE("ut_evaluate_object"); |
1da177e4 LT |
140 | |
141 | info.node = prefix_node; | |
142 | info.parameters = NULL; | |
143 | info.parameter_type = ACPI_PARAM_ARGS; | |
144 | ||
145 | /* Evaluate the object/method */ | |
146 | ||
4be44fcd LB |
147 | status = acpi_ns_evaluate_relative(path, &info); |
148 | if (ACPI_FAILURE(status)) { | |
1da177e4 | 149 | if (status == AE_NOT_FOUND) { |
4be44fcd LB |
150 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
151 | "[%4.4s.%s] was not found\n", | |
152 | acpi_ut_get_node_name(prefix_node), | |
153 | path)); | |
154 | } else { | |
155 | ACPI_REPORT_METHOD_ERROR("Method execution failed", | |
156 | prefix_node, path, status); | |
1da177e4 LT |
157 | } |
158 | ||
4be44fcd | 159 | return_ACPI_STATUS(status); |
1da177e4 LT |
160 | } |
161 | ||
162 | /* Did we get a return object? */ | |
163 | ||
164 | if (!info.return_object) { | |
165 | if (expected_return_btypes) { | |
4be44fcd LB |
166 | ACPI_REPORT_METHOD_ERROR("No object was returned from", |
167 | prefix_node, path, | |
168 | AE_NOT_EXIST); | |
1da177e4 | 169 | |
4be44fcd | 170 | return_ACPI_STATUS(AE_NOT_EXIST); |
1da177e4 LT |
171 | } |
172 | ||
4be44fcd | 173 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
174 | } |
175 | ||
176 | /* Map the return object type to the bitmapped type */ | |
177 | ||
4be44fcd | 178 | switch (ACPI_GET_OBJECT_TYPE(info.return_object)) { |
1da177e4 LT |
179 | case ACPI_TYPE_INTEGER: |
180 | return_btype = ACPI_BTYPE_INTEGER; | |
181 | break; | |
182 | ||
183 | case ACPI_TYPE_BUFFER: | |
184 | return_btype = ACPI_BTYPE_BUFFER; | |
185 | break; | |
186 | ||
187 | case ACPI_TYPE_STRING: | |
188 | return_btype = ACPI_BTYPE_STRING; | |
189 | break; | |
190 | ||
191 | case ACPI_TYPE_PACKAGE: | |
192 | return_btype = ACPI_BTYPE_PACKAGE; | |
193 | break; | |
194 | ||
195 | default: | |
196 | return_btype = 0; | |
197 | break; | |
198 | } | |
199 | ||
4be44fcd | 200 | if ((acpi_gbl_enable_interpreter_slack) && (!expected_return_btypes)) { |
1da177e4 LT |
201 | /* |
202 | * We received a return object, but one was not expected. This can | |
203 | * happen frequently if the "implicit return" feature is enabled. | |
204 | * Just delete the return object and return AE_OK. | |
205 | */ | |
4be44fcd LB |
206 | acpi_ut_remove_reference(info.return_object); |
207 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
208 | } |
209 | ||
210 | /* Is the return object one of the expected types? */ | |
211 | ||
212 | if (!(expected_return_btypes & return_btype)) { | |
4be44fcd LB |
213 | ACPI_REPORT_METHOD_ERROR("Return object type is incorrect", |
214 | prefix_node, path, AE_TYPE); | |
1da177e4 | 215 | |
4be44fcd LB |
216 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
217 | "Type returned from %s was incorrect: %s, expected Btypes: %X\n", | |
218 | path, | |
219 | acpi_ut_get_object_type_name(info. | |
220 | return_object), | |
221 | expected_return_btypes)); | |
1da177e4 LT |
222 | |
223 | /* On error exit, we must delete the return object */ | |
224 | ||
4be44fcd LB |
225 | acpi_ut_remove_reference(info.return_object); |
226 | return_ACPI_STATUS(AE_TYPE); | |
1da177e4 LT |
227 | } |
228 | ||
229 | /* Object type is OK, return it */ | |
230 | ||
231 | *return_desc = info.return_object; | |
4be44fcd | 232 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
233 | } |
234 | ||
1da177e4 LT |
235 | /******************************************************************************* |
236 | * | |
237 | * FUNCTION: acpi_ut_evaluate_numeric_object | |
238 | * | |
44f6c012 | 239 | * PARAMETERS: object_name - Object name to be evaluated |
1da177e4 | 240 | * device_node - Node for the device |
44f6c012 | 241 | * Address - Where the value is returned |
1da177e4 LT |
242 | * |
243 | * RETURN: Status | |
244 | * | |
245 | * DESCRIPTION: Evaluates a numeric namespace object for a selected device | |
246 | * and stores result in *Address. | |
247 | * | |
248 | * NOTE: Internal function, no parameter validation | |
249 | * | |
250 | ******************************************************************************/ | |
251 | ||
252 | acpi_status | |
4be44fcd LB |
253 | acpi_ut_evaluate_numeric_object(char *object_name, |
254 | struct acpi_namespace_node *device_node, | |
255 | acpi_integer * address) | |
1da177e4 | 256 | { |
4be44fcd LB |
257 | union acpi_operand_object *obj_desc; |
258 | acpi_status status; | |
1da177e4 | 259 | |
4be44fcd | 260 | ACPI_FUNCTION_TRACE("ut_evaluate_numeric_object"); |
1da177e4 | 261 | |
4be44fcd LB |
262 | status = acpi_ut_evaluate_object(device_node, object_name, |
263 | ACPI_BTYPE_INTEGER, &obj_desc); | |
264 | if (ACPI_FAILURE(status)) { | |
265 | return_ACPI_STATUS(status); | |
1da177e4 LT |
266 | } |
267 | ||
268 | /* Get the returned Integer */ | |
269 | ||
270 | *address = obj_desc->integer.value; | |
271 | ||
272 | /* On exit, we must delete the return object */ | |
273 | ||
4be44fcd LB |
274 | acpi_ut_remove_reference(obj_desc); |
275 | return_ACPI_STATUS(status); | |
1da177e4 LT |
276 | } |
277 | ||
1da177e4 LT |
278 | /******************************************************************************* |
279 | * | |
280 | * FUNCTION: acpi_ut_copy_id_string | |
281 | * | |
282 | * PARAMETERS: Destination - Where to copy the string | |
283 | * Source - Source string | |
284 | * max_length - Length of the destination buffer | |
285 | * | |
286 | * RETURN: None | |
287 | * | |
288 | * DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods. | |
289 | * Performs removal of a leading asterisk if present -- workaround | |
290 | * for a known issue on a bunch of machines. | |
291 | * | |
292 | ******************************************************************************/ | |
293 | ||
294 | static void | |
4be44fcd | 295 | acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length) |
1da177e4 LT |
296 | { |
297 | ||
1da177e4 LT |
298 | /* |
299 | * Workaround for ID strings that have a leading asterisk. This construct | |
300 | * is not allowed by the ACPI specification (ID strings must be | |
301 | * alphanumeric), but enough existing machines have this embedded in their | |
302 | * ID strings that the following code is useful. | |
303 | */ | |
304 | if (*source == '*') { | |
305 | source++; | |
306 | } | |
307 | ||
308 | /* Do the actual copy */ | |
309 | ||
4be44fcd | 310 | ACPI_STRNCPY(destination, source, max_length); |
1da177e4 LT |
311 | } |
312 | ||
1da177e4 LT |
313 | /******************************************************************************* |
314 | * | |
315 | * FUNCTION: acpi_ut_execute_HID | |
316 | * | |
317 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 318 | * Hid - Where the HID is returned |
1da177e4 LT |
319 | * |
320 | * RETURN: Status | |
321 | * | |
322 | * DESCRIPTION: Executes the _HID control method that returns the hardware | |
323 | * ID of the device. | |
324 | * | |
325 | * NOTE: Internal function, no parameter validation | |
326 | * | |
327 | ******************************************************************************/ | |
328 | ||
329 | acpi_status | |
4be44fcd LB |
330 | acpi_ut_execute_HID(struct acpi_namespace_node *device_node, |
331 | struct acpi_device_id *hid) | |
1da177e4 | 332 | { |
4be44fcd LB |
333 | union acpi_operand_object *obj_desc; |
334 | acpi_status status; | |
1da177e4 | 335 | |
4be44fcd | 336 | ACPI_FUNCTION_TRACE("ut_execute_HID"); |
1da177e4 | 337 | |
4be44fcd LB |
338 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__HID, |
339 | ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, | |
340 | &obj_desc); | |
341 | if (ACPI_FAILURE(status)) { | |
342 | return_ACPI_STATUS(status); | |
1da177e4 LT |
343 | } |
344 | ||
4be44fcd | 345 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
1da177e4 LT |
346 | /* Convert the Numeric HID to string */ |
347 | ||
4be44fcd LB |
348 | acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value, |
349 | hid->value); | |
350 | } else { | |
1da177e4 LT |
351 | /* Copy the String HID from the returned object */ |
352 | ||
4be44fcd LB |
353 | acpi_ut_copy_id_string(hid->value, obj_desc->string.pointer, |
354 | sizeof(hid->value)); | |
1da177e4 LT |
355 | } |
356 | ||
357 | /* On exit, we must delete the return object */ | |
358 | ||
4be44fcd LB |
359 | acpi_ut_remove_reference(obj_desc); |
360 | return_ACPI_STATUS(status); | |
1da177e4 LT |
361 | } |
362 | ||
1da177e4 LT |
363 | /******************************************************************************* |
364 | * | |
365 | * FUNCTION: acpi_ut_translate_one_cid | |
366 | * | |
367 | * PARAMETERS: obj_desc - _CID object, must be integer or string | |
368 | * one_cid - Where the CID string is returned | |
369 | * | |
370 | * RETURN: Status | |
371 | * | |
372 | * DESCRIPTION: Return a numeric or string _CID value as a string. | |
373 | * (Compatible ID) | |
374 | * | |
375 | * NOTE: Assumes a maximum _CID string length of | |
376 | * ACPI_MAX_CID_LENGTH. | |
377 | * | |
378 | ******************************************************************************/ | |
379 | ||
380 | static acpi_status | |
4be44fcd LB |
381 | acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc, |
382 | struct acpi_compatible_id *one_cid) | |
1da177e4 LT |
383 | { |
384 | ||
4be44fcd | 385 | switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { |
1da177e4 LT |
386 | case ACPI_TYPE_INTEGER: |
387 | ||
388 | /* Convert the Numeric CID to string */ | |
389 | ||
4be44fcd LB |
390 | acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value, |
391 | one_cid->value); | |
1da177e4 LT |
392 | return (AE_OK); |
393 | ||
394 | case ACPI_TYPE_STRING: | |
395 | ||
396 | if (obj_desc->string.length > ACPI_MAX_CID_LENGTH) { | |
397 | return (AE_AML_STRING_LIMIT); | |
398 | } | |
399 | ||
400 | /* Copy the String CID from the returned object */ | |
401 | ||
4be44fcd LB |
402 | acpi_ut_copy_id_string(one_cid->value, obj_desc->string.pointer, |
403 | ACPI_MAX_CID_LENGTH); | |
1da177e4 LT |
404 | return (AE_OK); |
405 | ||
406 | default: | |
407 | ||
408 | return (AE_TYPE); | |
409 | } | |
410 | } | |
411 | ||
1da177e4 LT |
412 | /******************************************************************************* |
413 | * | |
414 | * FUNCTION: acpi_ut_execute_CID | |
415 | * | |
416 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 417 | * return_cid_list - Where the CID list is returned |
1da177e4 LT |
418 | * |
419 | * RETURN: Status | |
420 | * | |
421 | * DESCRIPTION: Executes the _CID control method that returns one or more | |
422 | * compatible hardware IDs for the device. | |
423 | * | |
424 | * NOTE: Internal function, no parameter validation | |
425 | * | |
426 | ******************************************************************************/ | |
427 | ||
428 | acpi_status | |
4be44fcd LB |
429 | acpi_ut_execute_CID(struct acpi_namespace_node * device_node, |
430 | struct acpi_compatible_id_list ** return_cid_list) | |
1da177e4 | 431 | { |
4be44fcd LB |
432 | union acpi_operand_object *obj_desc; |
433 | acpi_status status; | |
434 | u32 count; | |
435 | u32 size; | |
1da177e4 | 436 | struct acpi_compatible_id_list *cid_list; |
4be44fcd | 437 | acpi_native_uint i; |
1da177e4 | 438 | |
4be44fcd | 439 | ACPI_FUNCTION_TRACE("ut_execute_CID"); |
1da177e4 LT |
440 | |
441 | /* Evaluate the _CID method for this device */ | |
442 | ||
4be44fcd LB |
443 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__CID, |
444 | ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | |
445 | | ACPI_BTYPE_PACKAGE, &obj_desc); | |
446 | if (ACPI_FAILURE(status)) { | |
447 | return_ACPI_STATUS(status); | |
1da177e4 LT |
448 | } |
449 | ||
450 | /* Get the number of _CIDs returned */ | |
451 | ||
452 | count = 1; | |
4be44fcd | 453 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) { |
1da177e4 LT |
454 | count = obj_desc->package.count; |
455 | } | |
456 | ||
457 | /* Allocate a worst-case buffer for the _CIDs */ | |
458 | ||
4be44fcd LB |
459 | size = (((count - 1) * sizeof(struct acpi_compatible_id)) + |
460 | sizeof(struct acpi_compatible_id_list)); | |
1da177e4 | 461 | |
4be44fcd | 462 | cid_list = ACPI_MEM_CALLOCATE((acpi_size) size); |
1da177e4 | 463 | if (!cid_list) { |
4be44fcd | 464 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
465 | } |
466 | ||
467 | /* Init CID list */ | |
468 | ||
469 | cid_list->count = count; | |
470 | cid_list->size = size; | |
471 | ||
472 | /* | |
44f6c012 RM |
473 | * A _CID can return either a single compatible ID or a package of |
474 | * compatible IDs. Each compatible ID can be one of the following: | |
475 | * 1) Integer (32 bit compressed EISA ID) or | |
476 | * 2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss") | |
1da177e4 LT |
477 | */ |
478 | ||
479 | /* The _CID object can be either a single CID or a package (list) of CIDs */ | |
480 | ||
4be44fcd | 481 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) { |
1da177e4 LT |
482 | /* Translate each package element */ |
483 | ||
484 | for (i = 0; i < count; i++) { | |
4be44fcd LB |
485 | status = |
486 | acpi_ut_translate_one_cid(obj_desc->package. | |
487 | elements[i], | |
488 | &cid_list->id[i]); | |
489 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
490 | break; |
491 | } | |
492 | } | |
4be44fcd | 493 | } else { |
1da177e4 LT |
494 | /* Only one CID, translate to a string */ |
495 | ||
4be44fcd | 496 | status = acpi_ut_translate_one_cid(obj_desc, cid_list->id); |
1da177e4 LT |
497 | } |
498 | ||
499 | /* Cleanup on error */ | |
500 | ||
4be44fcd LB |
501 | if (ACPI_FAILURE(status)) { |
502 | ACPI_MEM_FREE(cid_list); | |
503 | } else { | |
1da177e4 LT |
504 | *return_cid_list = cid_list; |
505 | } | |
506 | ||
507 | /* On exit, we must delete the _CID return object */ | |
508 | ||
4be44fcd LB |
509 | acpi_ut_remove_reference(obj_desc); |
510 | return_ACPI_STATUS(status); | |
1da177e4 LT |
511 | } |
512 | ||
1da177e4 LT |
513 | /******************************************************************************* |
514 | * | |
515 | * FUNCTION: acpi_ut_execute_UID | |
516 | * | |
517 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 518 | * Uid - Where the UID is returned |
1da177e4 LT |
519 | * |
520 | * RETURN: Status | |
521 | * | |
522 | * DESCRIPTION: Executes the _UID control method that returns the hardware | |
523 | * ID of the device. | |
524 | * | |
525 | * NOTE: Internal function, no parameter validation | |
526 | * | |
527 | ******************************************************************************/ | |
528 | ||
529 | acpi_status | |
4be44fcd LB |
530 | acpi_ut_execute_UID(struct acpi_namespace_node *device_node, |
531 | struct acpi_device_id *uid) | |
1da177e4 | 532 | { |
4be44fcd LB |
533 | union acpi_operand_object *obj_desc; |
534 | acpi_status status; | |
1da177e4 | 535 | |
4be44fcd | 536 | ACPI_FUNCTION_TRACE("ut_execute_UID"); |
1da177e4 | 537 | |
4be44fcd LB |
538 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__UID, |
539 | ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, | |
540 | &obj_desc); | |
541 | if (ACPI_FAILURE(status)) { | |
542 | return_ACPI_STATUS(status); | |
1da177e4 LT |
543 | } |
544 | ||
4be44fcd | 545 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
1da177e4 LT |
546 | /* Convert the Numeric UID to string */ |
547 | ||
4be44fcd LB |
548 | acpi_ex_unsigned_integer_to_string(obj_desc->integer.value, |
549 | uid->value); | |
550 | } else { | |
1da177e4 LT |
551 | /* Copy the String UID from the returned object */ |
552 | ||
4be44fcd LB |
553 | acpi_ut_copy_id_string(uid->value, obj_desc->string.pointer, |
554 | sizeof(uid->value)); | |
1da177e4 LT |
555 | } |
556 | ||
557 | /* On exit, we must delete the return object */ | |
558 | ||
4be44fcd LB |
559 | acpi_ut_remove_reference(obj_desc); |
560 | return_ACPI_STATUS(status); | |
1da177e4 LT |
561 | } |
562 | ||
1da177e4 LT |
563 | /******************************************************************************* |
564 | * | |
565 | * FUNCTION: acpi_ut_execute_STA | |
566 | * | |
567 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 568 | * Flags - Where the status flags are returned |
1da177e4 LT |
569 | * |
570 | * RETURN: Status | |
571 | * | |
572 | * DESCRIPTION: Executes _STA for selected device and stores results in | |
573 | * *Flags. | |
574 | * | |
575 | * NOTE: Internal function, no parameter validation | |
576 | * | |
577 | ******************************************************************************/ | |
578 | ||
579 | acpi_status | |
4be44fcd | 580 | acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags) |
1da177e4 | 581 | { |
4be44fcd LB |
582 | union acpi_operand_object *obj_desc; |
583 | acpi_status status; | |
1da177e4 | 584 | |
4be44fcd | 585 | ACPI_FUNCTION_TRACE("ut_execute_STA"); |
1da177e4 | 586 | |
4be44fcd LB |
587 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__STA, |
588 | ACPI_BTYPE_INTEGER, &obj_desc); | |
589 | if (ACPI_FAILURE(status)) { | |
1da177e4 | 590 | if (AE_NOT_FOUND == status) { |
4be44fcd LB |
591 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
592 | "_STA on %4.4s was not found, assuming device is present\n", | |
593 | acpi_ut_get_node_name(device_node))); | |
1da177e4 LT |
594 | |
595 | *flags = 0x0F; | |
596 | status = AE_OK; | |
597 | } | |
598 | ||
4be44fcd | 599 | return_ACPI_STATUS(status); |
1da177e4 LT |
600 | } |
601 | ||
602 | /* Extract the status flags */ | |
603 | ||
604 | *flags = (u32) obj_desc->integer.value; | |
605 | ||
606 | /* On exit, we must delete the return object */ | |
607 | ||
4be44fcd LB |
608 | acpi_ut_remove_reference(obj_desc); |
609 | return_ACPI_STATUS(status); | |
1da177e4 LT |
610 | } |
611 | ||
1da177e4 LT |
612 | /******************************************************************************* |
613 | * | |
614 | * FUNCTION: acpi_ut_execute_Sxds | |
615 | * | |
616 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 617 | * Flags - Where the status flags are returned |
1da177e4 LT |
618 | * |
619 | * RETURN: Status | |
620 | * | |
621 | * DESCRIPTION: Executes _STA for selected device and stores results in | |
622 | * *Flags. | |
623 | * | |
624 | * NOTE: Internal function, no parameter validation | |
625 | * | |
626 | ******************************************************************************/ | |
627 | ||
628 | acpi_status | |
4be44fcd | 629 | acpi_ut_execute_sxds(struct acpi_namespace_node *device_node, u8 * highest) |
1da177e4 | 630 | { |
4be44fcd LB |
631 | union acpi_operand_object *obj_desc; |
632 | acpi_status status; | |
633 | u32 i; | |
1da177e4 | 634 | |
4be44fcd | 635 | ACPI_FUNCTION_TRACE("ut_execute_Sxds"); |
1da177e4 LT |
636 | |
637 | for (i = 0; i < 4; i++) { | |
638 | highest[i] = 0xFF; | |
4be44fcd LB |
639 | status = acpi_ut_evaluate_object(device_node, |
640 | (char *) | |
641 | acpi_gbl_highest_dstate_names | |
642 | [i], ACPI_BTYPE_INTEGER, | |
643 | &obj_desc); | |
644 | if (ACPI_FAILURE(status)) { | |
1da177e4 | 645 | if (status != AE_NOT_FOUND) { |
4be44fcd LB |
646 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
647 | "%s on Device %4.4s, %s\n", | |
648 | (char *) | |
649 | acpi_gbl_highest_dstate_names | |
650 | [i], | |
651 | acpi_ut_get_node_name | |
652 | (device_node), | |
653 | acpi_format_exception | |
654 | (status))); | |
655 | ||
656 | return_ACPI_STATUS(status); | |
1da177e4 | 657 | } |
4be44fcd | 658 | } else { |
1da177e4 LT |
659 | /* Extract the Dstate value */ |
660 | ||
661 | highest[i] = (u8) obj_desc->integer.value; | |
662 | ||
663 | /* Delete the return object */ | |
664 | ||
4be44fcd | 665 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
666 | } |
667 | } | |
668 | ||
4be44fcd | 669 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 670 | } |