Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: uteval - Object evaluation | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
75a44ce0 | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
1da177e4 LT |
9 | * All rights reserved. |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
1da177e4 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 | 58 | |
b229cf92 BM |
59 | /* |
60 | * Strings supported by the _OSI predefined (internal) method. | |
61 | */ | |
ae00d812 | 62 | static char *acpi_interfaces_supported[] = { |
b229cf92 BM |
63 | /* Operating System Vendor Strings */ |
64 | ||
3c6394c5 BM |
65 | "Windows 2000", /* Windows 2000 */ |
66 | "Windows 2001", /* Windows XP */ | |
67 | "Windows 2001 SP1", /* Windows XP SP1 */ | |
68 | "Windows 2001 SP2", /* Windows XP SP2 */ | |
69 | "Windows 2001.1", /* Windows Server 2003 */ | |
70 | "Windows 2001.1 SP1", /* Windows Server 2003 SP1 - Added 03/2006 */ | |
71 | "Windows 2006", /* Windows Vista - Added 03/2006 */ | |
b229cf92 BM |
72 | |
73 | /* Feature Group Strings */ | |
74 | ||
75 | "Extended Address Space Descriptor" | |
76 | /* | |
77 | * All "optional" feature group strings (features that are implemented | |
78 | * by the host) should be implemented in the host version of | |
79 | * acpi_os_validate_interface and should not be added here. | |
80 | */ | |
81 | }; | |
82 | ||
1da177e4 LT |
83 | /******************************************************************************* |
84 | * | |
85 | * FUNCTION: acpi_ut_osi_implementation | |
86 | * | |
87 | * PARAMETERS: walk_state - Current walk state | |
88 | * | |
89 | * RETURN: Status | |
90 | * | |
b229cf92 | 91 | * DESCRIPTION: Implementation of the _OSI predefined control method |
1da177e4 LT |
92 | * |
93 | ******************************************************************************/ | |
94 | ||
4be44fcd | 95 | acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state) |
1da177e4 | 96 | { |
b229cf92 | 97 | acpi_status status; |
4be44fcd LB |
98 | union acpi_operand_object *string_desc; |
99 | union acpi_operand_object *return_desc; | |
67a119f9 | 100 | u32 i; |
1da177e4 | 101 | |
b229cf92 | 102 | ACPI_FUNCTION_TRACE(ut_osi_implementation); |
1da177e4 LT |
103 | |
104 | /* Validate the string input argument */ | |
105 | ||
106 | string_desc = walk_state->arguments[0].object; | |
107 | if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) { | |
4be44fcd | 108 | return_ACPI_STATUS(AE_TYPE); |
1da177e4 LT |
109 | } |
110 | ||
b229cf92 | 111 | /* Create a return object */ |
1da177e4 | 112 | |
4be44fcd | 113 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
1da177e4 | 114 | if (!return_desc) { |
4be44fcd | 115 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
116 | } |
117 | ||
b229cf92 | 118 | /* Default return value is SUPPORTED */ |
1da177e4 | 119 | |
b229cf92 BM |
120 | return_desc->integer.value = ACPI_UINT32_MAX; |
121 | walk_state->return_desc = return_desc; | |
122 | ||
123 | /* Compare input string to static table of supported interfaces */ | |
52fc0b02 | 124 | |
b229cf92 BM |
125 | for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) { |
126 | if (!ACPI_STRCMP | |
127 | (string_desc->string.pointer, | |
128 | acpi_interfaces_supported[i])) { | |
1da177e4 | 129 | |
b229cf92 BM |
130 | /* The interface is supported */ |
131 | ||
132 | return_ACPI_STATUS(AE_CTRL_TERMINATE); | |
1da177e4 LT |
133 | } |
134 | } | |
135 | ||
b229cf92 BM |
136 | /* |
137 | * Did not match the string in the static table, call the host OSL to | |
138 | * check for a match with one of the optional strings (such as | |
139 | * "Module Device", "3.0 Thermal Model", etc.) | |
140 | */ | |
141 | status = acpi_os_validate_interface(string_desc->string.pointer); | |
142 | if (ACPI_SUCCESS(status)) { | |
143 | ||
144 | /* The interface is supported */ | |
145 | ||
146 | return_ACPI_STATUS(AE_CTRL_TERMINATE); | |
147 | } | |
148 | ||
149 | /* The interface is not supported */ | |
150 | ||
151 | return_desc->integer.value = 0; | |
4be44fcd | 152 | return_ACPI_STATUS(AE_CTRL_TERMINATE); |
1da177e4 LT |
153 | } |
154 | ||
ae00d812 LB |
155 | /******************************************************************************* |
156 | * | |
157 | * FUNCTION: acpi_osi_invalidate | |
158 | * | |
159 | * PARAMETERS: interface_string | |
160 | * | |
161 | * RETURN: Status | |
162 | * | |
163 | * DESCRIPTION: invalidate string in pre-defiend _OSI string list | |
164 | * | |
165 | ******************************************************************************/ | |
166 | ||
167 | acpi_status acpi_osi_invalidate(char *interface) | |
168 | { | |
169 | int i; | |
170 | ||
171 | for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) { | |
172 | if (!ACPI_STRCMP(interface, acpi_interfaces_supported[i])) { | |
173 | *acpi_interfaces_supported[i] = '\0'; | |
174 | return AE_OK; | |
175 | } | |
176 | } | |
177 | return AE_NOT_FOUND; | |
178 | } | |
179 | ||
1da177e4 LT |
180 | /******************************************************************************* |
181 | * | |
182 | * FUNCTION: acpi_ut_evaluate_object | |
183 | * | |
184 | * PARAMETERS: prefix_node - Starting node | |
185 | * Path - Path to object from starting node | |
186 | * expected_return_types - Bitmap of allowed return types | |
187 | * return_desc - Where a return value is stored | |
188 | * | |
189 | * RETURN: Status | |
190 | * | |
191 | * DESCRIPTION: Evaluates a namespace object and verifies the type of the | |
192 | * return object. Common code that simplifies accessing objects | |
193 | * that have required return objects of fixed types. | |
194 | * | |
195 | * NOTE: Internal function, no parameter validation | |
196 | * | |
197 | ******************************************************************************/ | |
198 | ||
199 | acpi_status | |
4be44fcd LB |
200 | acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node, |
201 | char *path, | |
202 | u32 expected_return_btypes, | |
203 | union acpi_operand_object **return_desc) | |
1da177e4 | 204 | { |
4119532c | 205 | struct acpi_evaluate_info *info; |
4be44fcd LB |
206 | acpi_status status; |
207 | u32 return_btype; | |
1da177e4 | 208 | |
b229cf92 | 209 | ACPI_FUNCTION_TRACE(ut_evaluate_object); |
1da177e4 | 210 | |
4119532c BM |
211 | /* Allocate the evaluation information block */ |
212 | ||
213 | info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); | |
214 | if (!info) { | |
215 | return_ACPI_STATUS(AE_NO_MEMORY); | |
216 | } | |
217 | ||
218 | info->prefix_node = prefix_node; | |
219 | info->pathname = path; | |
1da177e4 LT |
220 | |
221 | /* Evaluate the object/method */ | |
222 | ||
4119532c | 223 | status = acpi_ns_evaluate(info); |
4be44fcd | 224 | if (ACPI_FAILURE(status)) { |
1da177e4 | 225 | if (status == AE_NOT_FOUND) { |
4be44fcd LB |
226 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
227 | "[%4.4s.%s] was not found\n", | |
228 | acpi_ut_get_node_name(prefix_node), | |
229 | path)); | |
230 | } else { | |
b8e4d893 BM |
231 | ACPI_ERROR_METHOD("Method execution failed", |
232 | prefix_node, path, status); | |
1da177e4 LT |
233 | } |
234 | ||
4119532c | 235 | goto cleanup; |
1da177e4 LT |
236 | } |
237 | ||
238 | /* Did we get a return object? */ | |
239 | ||
4119532c | 240 | if (!info->return_object) { |
1da177e4 | 241 | if (expected_return_btypes) { |
b8e4d893 BM |
242 | ACPI_ERROR_METHOD("No object was returned from", |
243 | prefix_node, path, AE_NOT_EXIST); | |
1da177e4 | 244 | |
4119532c | 245 | status = AE_NOT_EXIST; |
1da177e4 LT |
246 | } |
247 | ||
4119532c | 248 | goto cleanup; |
1da177e4 LT |
249 | } |
250 | ||
251 | /* Map the return object type to the bitmapped type */ | |
252 | ||
4119532c | 253 | switch (ACPI_GET_OBJECT_TYPE(info->return_object)) { |
1da177e4 LT |
254 | case ACPI_TYPE_INTEGER: |
255 | return_btype = ACPI_BTYPE_INTEGER; | |
256 | break; | |
257 | ||
258 | case ACPI_TYPE_BUFFER: | |
259 | return_btype = ACPI_BTYPE_BUFFER; | |
260 | break; | |
261 | ||
262 | case ACPI_TYPE_STRING: | |
263 | return_btype = ACPI_BTYPE_STRING; | |
264 | break; | |
265 | ||
266 | case ACPI_TYPE_PACKAGE: | |
267 | return_btype = ACPI_BTYPE_PACKAGE; | |
268 | break; | |
269 | ||
270 | default: | |
271 | return_btype = 0; | |
272 | break; | |
273 | } | |
274 | ||
4be44fcd | 275 | if ((acpi_gbl_enable_interpreter_slack) && (!expected_return_btypes)) { |
1da177e4 LT |
276 | /* |
277 | * We received a return object, but one was not expected. This can | |
278 | * happen frequently if the "implicit return" feature is enabled. | |
279 | * Just delete the return object and return AE_OK. | |
280 | */ | |
4119532c BM |
281 | acpi_ut_remove_reference(info->return_object); |
282 | goto cleanup; | |
1da177e4 LT |
283 | } |
284 | ||
285 | /* Is the return object one of the expected types? */ | |
286 | ||
287 | if (!(expected_return_btypes & return_btype)) { | |
b8e4d893 BM |
288 | ACPI_ERROR_METHOD("Return object type is incorrect", |
289 | prefix_node, path, AE_TYPE); | |
290 | ||
291 | ACPI_ERROR((AE_INFO, | |
292 | "Type returned from %s was incorrect: %s, expected Btypes: %X", | |
293 | path, | |
4119532c | 294 | acpi_ut_get_object_type_name(info->return_object), |
b8e4d893 | 295 | expected_return_btypes)); |
1da177e4 LT |
296 | |
297 | /* On error exit, we must delete the return object */ | |
298 | ||
4119532c BM |
299 | acpi_ut_remove_reference(info->return_object); |
300 | status = AE_TYPE; | |
301 | goto cleanup; | |
1da177e4 LT |
302 | } |
303 | ||
304 | /* Object type is OK, return it */ | |
305 | ||
4119532c BM |
306 | *return_desc = info->return_object; |
307 | ||
308 | cleanup: | |
309 | ACPI_FREE(info); | |
310 | return_ACPI_STATUS(status); | |
1da177e4 LT |
311 | } |
312 | ||
1da177e4 LT |
313 | /******************************************************************************* |
314 | * | |
315 | * FUNCTION: acpi_ut_evaluate_numeric_object | |
316 | * | |
44f6c012 | 317 | * PARAMETERS: object_name - Object name to be evaluated |
1da177e4 | 318 | * device_node - Node for the device |
44f6c012 | 319 | * Address - Where the value is returned |
1da177e4 LT |
320 | * |
321 | * RETURN: Status | |
322 | * | |
323 | * DESCRIPTION: Evaluates a numeric namespace object for a selected device | |
324 | * and stores result in *Address. | |
325 | * | |
326 | * NOTE: Internal function, no parameter validation | |
327 | * | |
328 | ******************************************************************************/ | |
329 | ||
330 | acpi_status | |
4be44fcd LB |
331 | acpi_ut_evaluate_numeric_object(char *object_name, |
332 | struct acpi_namespace_node *device_node, | |
333 | acpi_integer * address) | |
1da177e4 | 334 | { |
4be44fcd LB |
335 | union acpi_operand_object *obj_desc; |
336 | acpi_status status; | |
1da177e4 | 337 | |
b229cf92 | 338 | ACPI_FUNCTION_TRACE(ut_evaluate_numeric_object); |
1da177e4 | 339 | |
4be44fcd LB |
340 | status = acpi_ut_evaluate_object(device_node, object_name, |
341 | ACPI_BTYPE_INTEGER, &obj_desc); | |
342 | if (ACPI_FAILURE(status)) { | |
343 | return_ACPI_STATUS(status); | |
1da177e4 LT |
344 | } |
345 | ||
346 | /* Get the returned Integer */ | |
347 | ||
348 | *address = obj_desc->integer.value; | |
349 | ||
350 | /* On exit, we must delete the return object */ | |
351 | ||
4be44fcd LB |
352 | acpi_ut_remove_reference(obj_desc); |
353 | return_ACPI_STATUS(status); | |
1da177e4 LT |
354 | } |
355 | ||
1da177e4 LT |
356 | /******************************************************************************* |
357 | * | |
358 | * FUNCTION: acpi_ut_copy_id_string | |
359 | * | |
360 | * PARAMETERS: Destination - Where to copy the string | |
361 | * Source - Source string | |
362 | * max_length - Length of the destination buffer | |
363 | * | |
364 | * RETURN: None | |
365 | * | |
366 | * DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods. | |
367 | * Performs removal of a leading asterisk if present -- workaround | |
368 | * for a known issue on a bunch of machines. | |
369 | * | |
370 | ******************************************************************************/ | |
371 | ||
372 | static void | |
4be44fcd | 373 | acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length) |
1da177e4 LT |
374 | { |
375 | ||
1da177e4 LT |
376 | /* |
377 | * Workaround for ID strings that have a leading asterisk. This construct | |
378 | * is not allowed by the ACPI specification (ID strings must be | |
379 | * alphanumeric), but enough existing machines have this embedded in their | |
380 | * ID strings that the following code is useful. | |
381 | */ | |
382 | if (*source == '*') { | |
383 | source++; | |
384 | } | |
385 | ||
386 | /* Do the actual copy */ | |
387 | ||
4be44fcd | 388 | ACPI_STRNCPY(destination, source, max_length); |
1da177e4 LT |
389 | } |
390 | ||
1da177e4 LT |
391 | /******************************************************************************* |
392 | * | |
393 | * FUNCTION: acpi_ut_execute_HID | |
394 | * | |
395 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 396 | * Hid - Where the HID is returned |
1da177e4 LT |
397 | * |
398 | * RETURN: Status | |
399 | * | |
400 | * DESCRIPTION: Executes the _HID control method that returns the hardware | |
401 | * ID of the device. | |
402 | * | |
403 | * NOTE: Internal function, no parameter validation | |
404 | * | |
405 | ******************************************************************************/ | |
406 | ||
407 | acpi_status | |
4be44fcd | 408 | acpi_ut_execute_HID(struct acpi_namespace_node *device_node, |
8c8eb78f | 409 | struct acpica_device_id *hid) |
1da177e4 | 410 | { |
4be44fcd LB |
411 | union acpi_operand_object *obj_desc; |
412 | acpi_status status; | |
1da177e4 | 413 | |
b229cf92 | 414 | ACPI_FUNCTION_TRACE(ut_execute_HID); |
1da177e4 | 415 | |
4be44fcd LB |
416 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__HID, |
417 | ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, | |
418 | &obj_desc); | |
419 | if (ACPI_FAILURE(status)) { | |
420 | return_ACPI_STATUS(status); | |
1da177e4 LT |
421 | } |
422 | ||
4be44fcd | 423 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
52fc0b02 | 424 | |
1da177e4 LT |
425 | /* Convert the Numeric HID to string */ |
426 | ||
4be44fcd LB |
427 | acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value, |
428 | hid->value); | |
429 | } else { | |
1da177e4 LT |
430 | /* Copy the String HID from the returned object */ |
431 | ||
4be44fcd LB |
432 | acpi_ut_copy_id_string(hid->value, obj_desc->string.pointer, |
433 | sizeof(hid->value)); | |
1da177e4 LT |
434 | } |
435 | ||
436 | /* On exit, we must delete the return object */ | |
437 | ||
4be44fcd LB |
438 | acpi_ut_remove_reference(obj_desc); |
439 | return_ACPI_STATUS(status); | |
1da177e4 LT |
440 | } |
441 | ||
1da177e4 LT |
442 | /******************************************************************************* |
443 | * | |
444 | * FUNCTION: acpi_ut_translate_one_cid | |
445 | * | |
446 | * PARAMETERS: obj_desc - _CID object, must be integer or string | |
447 | * one_cid - Where the CID string is returned | |
448 | * | |
449 | * RETURN: Status | |
450 | * | |
451 | * DESCRIPTION: Return a numeric or string _CID value as a string. | |
452 | * (Compatible ID) | |
453 | * | |
454 | * NOTE: Assumes a maximum _CID string length of | |
455 | * ACPI_MAX_CID_LENGTH. | |
456 | * | |
457 | ******************************************************************************/ | |
458 | ||
459 | static acpi_status | |
4be44fcd LB |
460 | acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc, |
461 | struct acpi_compatible_id *one_cid) | |
1da177e4 LT |
462 | { |
463 | ||
4be44fcd | 464 | switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { |
1da177e4 LT |
465 | case ACPI_TYPE_INTEGER: |
466 | ||
467 | /* Convert the Numeric CID to string */ | |
468 | ||
4be44fcd LB |
469 | acpi_ex_eisa_id_to_string((u32) obj_desc->integer.value, |
470 | one_cid->value); | |
1da177e4 LT |
471 | return (AE_OK); |
472 | ||
473 | case ACPI_TYPE_STRING: | |
474 | ||
475 | if (obj_desc->string.length > ACPI_MAX_CID_LENGTH) { | |
476 | return (AE_AML_STRING_LIMIT); | |
477 | } | |
478 | ||
479 | /* Copy the String CID from the returned object */ | |
480 | ||
4be44fcd LB |
481 | acpi_ut_copy_id_string(one_cid->value, obj_desc->string.pointer, |
482 | ACPI_MAX_CID_LENGTH); | |
1da177e4 LT |
483 | return (AE_OK); |
484 | ||
485 | default: | |
486 | ||
487 | return (AE_TYPE); | |
488 | } | |
489 | } | |
490 | ||
1da177e4 LT |
491 | /******************************************************************************* |
492 | * | |
493 | * FUNCTION: acpi_ut_execute_CID | |
494 | * | |
495 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 496 | * return_cid_list - Where the CID list is returned |
1da177e4 LT |
497 | * |
498 | * RETURN: Status | |
499 | * | |
500 | * DESCRIPTION: Executes the _CID control method that returns one or more | |
501 | * compatible hardware IDs for the device. | |
502 | * | |
503 | * NOTE: Internal function, no parameter validation | |
504 | * | |
505 | ******************************************************************************/ | |
506 | ||
507 | acpi_status | |
4be44fcd LB |
508 | acpi_ut_execute_CID(struct acpi_namespace_node * device_node, |
509 | struct acpi_compatible_id_list ** return_cid_list) | |
1da177e4 | 510 | { |
4be44fcd LB |
511 | union acpi_operand_object *obj_desc; |
512 | acpi_status status; | |
513 | u32 count; | |
514 | u32 size; | |
1da177e4 | 515 | struct acpi_compatible_id_list *cid_list; |
67a119f9 | 516 | u32 i; |
1da177e4 | 517 | |
b229cf92 | 518 | ACPI_FUNCTION_TRACE(ut_execute_CID); |
1da177e4 LT |
519 | |
520 | /* Evaluate the _CID method for this device */ | |
521 | ||
4be44fcd LB |
522 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__CID, |
523 | ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | |
524 | | ACPI_BTYPE_PACKAGE, &obj_desc); | |
525 | if (ACPI_FAILURE(status)) { | |
526 | return_ACPI_STATUS(status); | |
1da177e4 LT |
527 | } |
528 | ||
529 | /* Get the number of _CIDs returned */ | |
530 | ||
531 | count = 1; | |
4be44fcd | 532 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) { |
1da177e4 LT |
533 | count = obj_desc->package.count; |
534 | } | |
535 | ||
536 | /* Allocate a worst-case buffer for the _CIDs */ | |
537 | ||
4be44fcd LB |
538 | size = (((count - 1) * sizeof(struct acpi_compatible_id)) + |
539 | sizeof(struct acpi_compatible_id_list)); | |
1da177e4 | 540 | |
8313524a | 541 | cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size); |
1da177e4 | 542 | if (!cid_list) { |
4be44fcd | 543 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
544 | } |
545 | ||
546 | /* Init CID list */ | |
547 | ||
548 | cid_list->count = count; | |
549 | cid_list->size = size; | |
550 | ||
551 | /* | |
44f6c012 RM |
552 | * A _CID can return either a single compatible ID or a package of |
553 | * compatible IDs. Each compatible ID can be one of the following: | |
554 | * 1) Integer (32 bit compressed EISA ID) or | |
555 | * 2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss") | |
1da177e4 LT |
556 | */ |
557 | ||
558 | /* The _CID object can be either a single CID or a package (list) of CIDs */ | |
559 | ||
4be44fcd | 560 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) { |
52fc0b02 | 561 | |
1da177e4 LT |
562 | /* Translate each package element */ |
563 | ||
564 | for (i = 0; i < count; i++) { | |
4be44fcd LB |
565 | status = |
566 | acpi_ut_translate_one_cid(obj_desc->package. | |
567 | elements[i], | |
568 | &cid_list->id[i]); | |
569 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
570 | break; |
571 | } | |
572 | } | |
4be44fcd | 573 | } else { |
1da177e4 LT |
574 | /* Only one CID, translate to a string */ |
575 | ||
4be44fcd | 576 | status = acpi_ut_translate_one_cid(obj_desc, cid_list->id); |
1da177e4 LT |
577 | } |
578 | ||
579 | /* Cleanup on error */ | |
580 | ||
4be44fcd | 581 | if (ACPI_FAILURE(status)) { |
8313524a | 582 | ACPI_FREE(cid_list); |
4be44fcd | 583 | } else { |
1da177e4 LT |
584 | *return_cid_list = cid_list; |
585 | } | |
586 | ||
587 | /* On exit, we must delete the _CID return object */ | |
588 | ||
4be44fcd LB |
589 | acpi_ut_remove_reference(obj_desc); |
590 | return_ACPI_STATUS(status); | |
1da177e4 LT |
591 | } |
592 | ||
1da177e4 LT |
593 | /******************************************************************************* |
594 | * | |
595 | * FUNCTION: acpi_ut_execute_UID | |
596 | * | |
597 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 598 | * Uid - Where the UID is returned |
1da177e4 LT |
599 | * |
600 | * RETURN: Status | |
601 | * | |
602 | * DESCRIPTION: Executes the _UID control method that returns the hardware | |
603 | * ID of the device. | |
604 | * | |
605 | * NOTE: Internal function, no parameter validation | |
606 | * | |
607 | ******************************************************************************/ | |
608 | ||
609 | acpi_status | |
4be44fcd | 610 | acpi_ut_execute_UID(struct acpi_namespace_node *device_node, |
8c8eb78f | 611 | struct acpica_device_id *uid) |
1da177e4 | 612 | { |
4be44fcd LB |
613 | union acpi_operand_object *obj_desc; |
614 | acpi_status status; | |
1da177e4 | 615 | |
b229cf92 | 616 | ACPI_FUNCTION_TRACE(ut_execute_UID); |
1da177e4 | 617 | |
4be44fcd LB |
618 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__UID, |
619 | ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, | |
620 | &obj_desc); | |
621 | if (ACPI_FAILURE(status)) { | |
622 | return_ACPI_STATUS(status); | |
1da177e4 LT |
623 | } |
624 | ||
4be44fcd | 625 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
52fc0b02 | 626 | |
1da177e4 LT |
627 | /* Convert the Numeric UID to string */ |
628 | ||
4be44fcd LB |
629 | acpi_ex_unsigned_integer_to_string(obj_desc->integer.value, |
630 | uid->value); | |
631 | } else { | |
1da177e4 LT |
632 | /* Copy the String UID from the returned object */ |
633 | ||
4be44fcd LB |
634 | acpi_ut_copy_id_string(uid->value, obj_desc->string.pointer, |
635 | sizeof(uid->value)); | |
1da177e4 LT |
636 | } |
637 | ||
638 | /* On exit, we must delete the return object */ | |
639 | ||
4be44fcd LB |
640 | acpi_ut_remove_reference(obj_desc); |
641 | return_ACPI_STATUS(status); | |
1da177e4 LT |
642 | } |
643 | ||
1da177e4 LT |
644 | /******************************************************************************* |
645 | * | |
646 | * FUNCTION: acpi_ut_execute_STA | |
647 | * | |
648 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 649 | * Flags - Where the status flags are returned |
1da177e4 LT |
650 | * |
651 | * RETURN: Status | |
652 | * | |
653 | * DESCRIPTION: Executes _STA for selected device and stores results in | |
654 | * *Flags. | |
655 | * | |
656 | * NOTE: Internal function, no parameter validation | |
657 | * | |
658 | ******************************************************************************/ | |
659 | ||
660 | acpi_status | |
4be44fcd | 661 | acpi_ut_execute_STA(struct acpi_namespace_node *device_node, u32 * flags) |
1da177e4 | 662 | { |
4be44fcd LB |
663 | union acpi_operand_object *obj_desc; |
664 | acpi_status status; | |
1da177e4 | 665 | |
b229cf92 | 666 | ACPI_FUNCTION_TRACE(ut_execute_STA); |
1da177e4 | 667 | |
4be44fcd LB |
668 | status = acpi_ut_evaluate_object(device_node, METHOD_NAME__STA, |
669 | ACPI_BTYPE_INTEGER, &obj_desc); | |
670 | if (ACPI_FAILURE(status)) { | |
1da177e4 | 671 | if (AE_NOT_FOUND == status) { |
4be44fcd LB |
672 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
673 | "_STA on %4.4s was not found, assuming device is present\n", | |
674 | acpi_ut_get_node_name(device_node))); | |
1da177e4 | 675 | |
defba1d8 | 676 | *flags = ACPI_UINT32_MAX; |
1da177e4 LT |
677 | status = AE_OK; |
678 | } | |
679 | ||
4be44fcd | 680 | return_ACPI_STATUS(status); |
1da177e4 LT |
681 | } |
682 | ||
683 | /* Extract the status flags */ | |
684 | ||
685 | *flags = (u32) obj_desc->integer.value; | |
686 | ||
687 | /* On exit, we must delete the return object */ | |
688 | ||
4be44fcd LB |
689 | acpi_ut_remove_reference(obj_desc); |
690 | return_ACPI_STATUS(status); | |
1da177e4 LT |
691 | } |
692 | ||
1da177e4 LT |
693 | /******************************************************************************* |
694 | * | |
695 | * FUNCTION: acpi_ut_execute_Sxds | |
696 | * | |
697 | * PARAMETERS: device_node - Node for the device | |
44f6c012 | 698 | * Flags - Where the status flags are returned |
1da177e4 LT |
699 | * |
700 | * RETURN: Status | |
701 | * | |
702 | * DESCRIPTION: Executes _STA for selected device and stores results in | |
703 | * *Flags. | |
704 | * | |
705 | * NOTE: Internal function, no parameter validation | |
706 | * | |
707 | ******************************************************************************/ | |
708 | ||
709 | acpi_status | |
4be44fcd | 710 | acpi_ut_execute_sxds(struct acpi_namespace_node *device_node, u8 * highest) |
1da177e4 | 711 | { |
4be44fcd LB |
712 | union acpi_operand_object *obj_desc; |
713 | acpi_status status; | |
714 | u32 i; | |
1da177e4 | 715 | |
b229cf92 | 716 | ACPI_FUNCTION_TRACE(ut_execute_sxds); |
1da177e4 LT |
717 | |
718 | for (i = 0; i < 4; i++) { | |
719 | highest[i] = 0xFF; | |
4be44fcd | 720 | status = acpi_ut_evaluate_object(device_node, |
defba1d8 BM |
721 | ACPI_CAST_PTR(char, |
722 | acpi_gbl_highest_dstate_names | |
723 | [i]), | |
724 | ACPI_BTYPE_INTEGER, &obj_desc); | |
4be44fcd | 725 | if (ACPI_FAILURE(status)) { |
1da177e4 | 726 | if (status != AE_NOT_FOUND) { |
4be44fcd LB |
727 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
728 | "%s on Device %4.4s, %s\n", | |
defba1d8 BM |
729 | ACPI_CAST_PTR(char, |
730 | acpi_gbl_highest_dstate_names | |
731 | [i]), | |
4be44fcd LB |
732 | acpi_ut_get_node_name |
733 | (device_node), | |
734 | acpi_format_exception | |
735 | (status))); | |
736 | ||
737 | return_ACPI_STATUS(status); | |
1da177e4 | 738 | } |
4be44fcd | 739 | } else { |
1da177e4 LT |
740 | /* Extract the Dstate value */ |
741 | ||
742 | highest[i] = (u8) obj_desc->integer.value; | |
743 | ||
744 | /* Delete the return object */ | |
745 | ||
4be44fcd | 746 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
747 | } |
748 | } | |
749 | ||
4be44fcd | 750 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 751 | } |