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ad5babee BM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: nsrepair2 - Repair for objects returned by specific | |
4 | * predefined methods | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
82a80941 | 9 | * Copyright (C) 2000 - 2015, Intel Corp. |
ad5babee BM |
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 | ||
45 | #include <acpi/acpi.h> | |
46 | #include "accommon.h" | |
47 | #include "acnamesp.h" | |
48 | ||
49 | #define _COMPONENT ACPI_NAMESPACE | |
50 | ACPI_MODULE_NAME("nsrepair2") | |
51 | ||
52 | /* | |
53 | * Information structure and handler for ACPI predefined names that can | |
54 | * be repaired on a per-name basis. | |
55 | */ | |
56 | typedef | |
29a241cc | 57 | acpi_status(*acpi_repair_function) (struct acpi_evaluate_info * info, |
3e8214e5 LZ |
58 | union acpi_operand_object |
59 | **return_object_ptr); | |
ad5babee BM |
60 | |
61 | typedef struct acpi_repair_info { | |
62 | char name[ACPI_NAME_SIZE]; | |
63 | acpi_repair_function repair_function; | |
64 | ||
65 | } acpi_repair_info; | |
66 | ||
67 | /* Local prototypes */ | |
68 | ||
d5a36100 BM |
69 | static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct |
70 | acpi_namespace_node | |
71 | *node); | |
ad5babee BM |
72 | |
73 | static acpi_status | |
29a241cc | 74 | acpi_ns_repair_ALR(struct acpi_evaluate_info *info, |
ad5babee BM |
75 | union acpi_operand_object **return_object_ptr); |
76 | ||
77b23f71 | 77 | static acpi_status |
29a241cc | 78 | acpi_ns_repair_CID(struct acpi_evaluate_info *info, |
77b23f71 BM |
79 | union acpi_operand_object **return_object_ptr); |
80 | ||
5a9792f3 LZ |
81 | static acpi_status |
82 | acpi_ns_repair_CST(struct acpi_evaluate_info *info, | |
83 | union acpi_operand_object **return_object_ptr); | |
84 | ||
34c39c75 | 85 | static acpi_status |
29a241cc | 86 | acpi_ns_repair_FDE(struct acpi_evaluate_info *info, |
34c39c75 BM |
87 | union acpi_operand_object **return_object_ptr); |
88 | ||
77b23f71 | 89 | static acpi_status |
29a241cc | 90 | acpi_ns_repair_HID(struct acpi_evaluate_info *info, |
77b23f71 BM |
91 | union acpi_operand_object **return_object_ptr); |
92 | ||
aa6329c4 LZ |
93 | static acpi_status |
94 | acpi_ns_repair_PRT(struct acpi_evaluate_info *info, | |
95 | union acpi_operand_object **return_object_ptr); | |
96 | ||
ad5babee | 97 | static acpi_status |
29a241cc | 98 | acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
ad5babee BM |
99 | union acpi_operand_object **return_object_ptr); |
100 | ||
101 | static acpi_status | |
29a241cc | 102 | acpi_ns_repair_TSS(struct acpi_evaluate_info *info, |
ad5babee BM |
103 | union acpi_operand_object **return_object_ptr); |
104 | ||
105 | static acpi_status | |
29a241cc | 106 | acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
ad5babee | 107 | union acpi_operand_object *return_object, |
5a9792f3 | 108 | u32 start_index, |
ad5babee BM |
109 | u32 expected_count, |
110 | u32 sort_index, | |
111 | u8 sort_direction, char *sort_key_name); | |
112 | ||
ad5babee BM |
113 | /* Values for sort_direction above */ |
114 | ||
115 | #define ACPI_SORT_ASCENDING 0 | |
116 | #define ACPI_SORT_DESCENDING 1 | |
117 | ||
5a9792f3 LZ |
118 | static void |
119 | acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index); | |
120 | ||
121 | static void | |
122 | acpi_ns_sort_list(union acpi_operand_object **elements, | |
123 | u32 count, u32 index, u8 sort_direction); | |
124 | ||
ad5babee BM |
125 | /* |
126 | * This table contains the names of the predefined methods for which we can | |
127 | * perform more complex repairs. | |
128 | * | |
34c39c75 BM |
129 | * As necessary: |
130 | * | |
131 | * _ALR: Sort the list ascending by ambient_illuminance | |
77b23f71 | 132 | * _CID: Strings: uppercase all, remove any leading asterisk |
5a9792f3 | 133 | * _CST: Sort the list ascending by C state type |
43420bbb BM |
134 | * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs |
135 | * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs | |
77b23f71 | 136 | * _HID: Strings: uppercase all, remove any leading asterisk |
aa6329c4 | 137 | * _PRT: Fix reversed source_name and source_index |
34c39c75 BM |
138 | * _PSS: Sort the list descending by Power |
139 | * _TSS: Sort the list descending by Power | |
aa9d3606 BM |
140 | * |
141 | * Names that must be packages, but cannot be sorted: | |
142 | * | |
143 | * _BCL: Values are tied to the Package index where they appear, and cannot | |
144 | * be moved or sorted. These index values are used for _BQC and _BCM. | |
145 | * However, we can fix the case where a buffer is returned, by converting | |
146 | * it to a Package of integers. | |
ad5babee BM |
147 | */ |
148 | static const struct acpi_repair_info acpi_ns_repairable_names[] = { | |
149 | {"_ALR", acpi_ns_repair_ALR}, | |
77b23f71 | 150 | {"_CID", acpi_ns_repair_CID}, |
5a9792f3 | 151 | {"_CST", acpi_ns_repair_CST}, |
34c39c75 BM |
152 | {"_FDE", acpi_ns_repair_FDE}, |
153 | {"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */ | |
77b23f71 | 154 | {"_HID", acpi_ns_repair_HID}, |
aa6329c4 | 155 | {"_PRT", acpi_ns_repair_PRT}, |
ad5babee BM |
156 | {"_PSS", acpi_ns_repair_PSS}, |
157 | {"_TSS", acpi_ns_repair_TSS}, | |
158 | {{0, 0, 0, 0}, NULL} /* Table terminator */ | |
159 | }; | |
160 | ||
34c39c75 BM |
161 | #define ACPI_FDE_FIELD_COUNT 5 |
162 | #define ACPI_FDE_BYTE_BUFFER_SIZE 5 | |
163 | #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (u32)) | |
164 | ||
ad5babee BM |
165 | /****************************************************************************** |
166 | * | |
167 | * FUNCTION: acpi_ns_complex_repairs | |
168 | * | |
29a241cc | 169 | * PARAMETERS: info - Method execution information block |
ba494bee | 170 | * node - Namespace node for the method/object |
ad5babee BM |
171 | * validate_status - Original status of earlier validation |
172 | * return_object_ptr - Pointer to the object returned from the | |
173 | * evaluation of a method or object | |
174 | * | |
175 | * RETURN: Status. AE_OK if repair was successful. If name is not | |
176 | * matched, validate_status is returned. | |
177 | * | |
178 | * DESCRIPTION: Attempt to repair/convert a return object of a type that was | |
179 | * not expected. | |
180 | * | |
181 | *****************************************************************************/ | |
182 | ||
183 | acpi_status | |
29a241cc | 184 | acpi_ns_complex_repairs(struct acpi_evaluate_info *info, |
ad5babee BM |
185 | struct acpi_namespace_node *node, |
186 | acpi_status validate_status, | |
187 | union acpi_operand_object **return_object_ptr) | |
188 | { | |
189 | const struct acpi_repair_info *predefined; | |
190 | acpi_status status; | |
191 | ||
192 | /* Check if this name is in the list of repairable names */ | |
193 | ||
d5a36100 | 194 | predefined = acpi_ns_match_complex_repair(node); |
ad5babee BM |
195 | if (!predefined) { |
196 | return (validate_status); | |
197 | } | |
198 | ||
29a241cc | 199 | status = predefined->repair_function(info, return_object_ptr); |
ad5babee BM |
200 | return (status); |
201 | } | |
202 | ||
203 | /****************************************************************************** | |
204 | * | |
d5a36100 | 205 | * FUNCTION: acpi_ns_match_complex_repair |
ad5babee | 206 | * |
ba494bee | 207 | * PARAMETERS: node - Namespace node for the method/object |
ad5babee BM |
208 | * |
209 | * RETURN: Pointer to entry in repair table. NULL indicates not found. | |
210 | * | |
211 | * DESCRIPTION: Check an object name against the repairable object list. | |
212 | * | |
213 | *****************************************************************************/ | |
214 | ||
d5a36100 BM |
215 | static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct |
216 | acpi_namespace_node | |
217 | *node) | |
ad5babee BM |
218 | { |
219 | const struct acpi_repair_info *this_name; | |
220 | ||
221 | /* Search info table for a repairable predefined method/object name */ | |
222 | ||
223 | this_name = acpi_ns_repairable_names; | |
224 | while (this_name->repair_function) { | |
225 | if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) { | |
226 | return (this_name); | |
227 | } | |
228 | this_name++; | |
229 | } | |
230 | ||
231 | return (NULL); /* Not found */ | |
232 | } | |
233 | ||
234 | /****************************************************************************** | |
235 | * | |
236 | * FUNCTION: acpi_ns_repair_ALR | |
237 | * | |
29a241cc | 238 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
239 | * return_object_ptr - Pointer to the object returned from the |
240 | * evaluation of a method or object | |
241 | * | |
242 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
243 | * | |
244 | * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list | |
245 | * ascending by the ambient illuminance values. | |
246 | * | |
247 | *****************************************************************************/ | |
248 | ||
249 | static acpi_status | |
29a241cc | 250 | acpi_ns_repair_ALR(struct acpi_evaluate_info *info, |
ad5babee BM |
251 | union acpi_operand_object **return_object_ptr) |
252 | { | |
253 | union acpi_operand_object *return_object = *return_object_ptr; | |
254 | acpi_status status; | |
255 | ||
5a9792f3 | 256 | status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1, |
ad5babee BM |
257 | ACPI_SORT_ASCENDING, |
258 | "AmbientIlluminance"); | |
259 | ||
260 | return (status); | |
261 | } | |
262 | ||
34c39c75 BM |
263 | /****************************************************************************** |
264 | * | |
265 | * FUNCTION: acpi_ns_repair_FDE | |
266 | * | |
29a241cc | 267 | * PARAMETERS: info - Method execution information block |
34c39c75 BM |
268 | * return_object_ptr - Pointer to the object returned from the |
269 | * evaluation of a method or object | |
270 | * | |
271 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
272 | * | |
273 | * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return | |
43420bbb BM |
274 | * value is a Buffer of 5 DWORDs. This function repairs a common |
275 | * problem where the return value is a Buffer of BYTEs, not | |
276 | * DWORDs. | |
34c39c75 BM |
277 | * |
278 | *****************************************************************************/ | |
279 | ||
280 | static acpi_status | |
29a241cc | 281 | acpi_ns_repair_FDE(struct acpi_evaluate_info *info, |
34c39c75 BM |
282 | union acpi_operand_object **return_object_ptr) |
283 | { | |
284 | union acpi_operand_object *return_object = *return_object_ptr; | |
34c39c75 BM |
285 | union acpi_operand_object *buffer_object; |
286 | u8 *byte_buffer; | |
287 | u32 *dword_buffer; | |
34c39c75 BM |
288 | u32 i; |
289 | ||
3a58176e BM |
290 | ACPI_FUNCTION_NAME(ns_repair_FDE); |
291 | ||
34c39c75 BM |
292 | switch (return_object->common.type) { |
293 | case ACPI_TYPE_BUFFER: | |
294 | ||
295 | /* This is the expected type. Length should be (at least) 5 DWORDs */ | |
296 | ||
297 | if (return_object->buffer.length >= ACPI_FDE_DWORD_BUFFER_SIZE) { | |
298 | return (AE_OK); | |
299 | } | |
300 | ||
301 | /* We can only repair if we have exactly 5 BYTEs */ | |
302 | ||
303 | if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) { | |
29a241cc BM |
304 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, |
305 | info->node_flags, | |
34c39c75 BM |
306 | "Incorrect return buffer length %u, expected %u", |
307 | return_object->buffer.length, | |
308 | ACPI_FDE_DWORD_BUFFER_SIZE)); | |
309 | ||
310 | return (AE_AML_OPERAND_TYPE); | |
311 | } | |
312 | ||
313 | /* Create the new (larger) buffer object */ | |
314 | ||
315 | buffer_object = | |
316 | acpi_ut_create_buffer_object(ACPI_FDE_DWORD_BUFFER_SIZE); | |
317 | if (!buffer_object) { | |
318 | return (AE_NO_MEMORY); | |
319 | } | |
320 | ||
321 | /* Expand each byte to a DWORD */ | |
322 | ||
323 | byte_buffer = return_object->buffer.pointer; | |
324 | dword_buffer = | |
325 | ACPI_CAST_PTR(u32, buffer_object->buffer.pointer); | |
326 | ||
327 | for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) { | |
328 | *dword_buffer = (u32) *byte_buffer; | |
329 | dword_buffer++; | |
330 | byte_buffer++; | |
331 | } | |
332 | ||
3a58176e BM |
333 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
334 | "%s Expanded Byte Buffer to expected DWord Buffer\n", | |
29a241cc | 335 | info->full_pathname)); |
34c39c75 BM |
336 | break; |
337 | ||
34c39c75 | 338 | default: |
1d1ea1b7 | 339 | |
34c39c75 BM |
340 | return (AE_AML_OPERAND_TYPE); |
341 | } | |
342 | ||
343 | /* Delete the original return object, return the new buffer object */ | |
344 | ||
345 | acpi_ut_remove_reference(return_object); | |
346 | *return_object_ptr = buffer_object; | |
347 | ||
29a241cc | 348 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
34c39c75 | 349 | return (AE_OK); |
77b23f71 BM |
350 | } |
351 | ||
352 | /****************************************************************************** | |
353 | * | |
354 | * FUNCTION: acpi_ns_repair_CID | |
355 | * | |
29a241cc | 356 | * PARAMETERS: info - Method execution information block |
77b23f71 BM |
357 | * return_object_ptr - Pointer to the object returned from the |
358 | * evaluation of a method or object | |
359 | * | |
360 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
361 | * | |
362 | * DESCRIPTION: Repair for the _CID object. If a string, ensure that all | |
363 | * letters are uppercase and that there is no leading asterisk. | |
364 | * If a Package, ensure same for all string elements. | |
365 | * | |
366 | *****************************************************************************/ | |
367 | ||
368 | static acpi_status | |
29a241cc | 369 | acpi_ns_repair_CID(struct acpi_evaluate_info *info, |
77b23f71 BM |
370 | union acpi_operand_object **return_object_ptr) |
371 | { | |
372 | acpi_status status; | |
373 | union acpi_operand_object *return_object = *return_object_ptr; | |
374 | union acpi_operand_object **element_ptr; | |
375 | union acpi_operand_object *original_element; | |
376 | u16 original_ref_count; | |
377 | u32 i; | |
378 | ||
379 | /* Check for _CID as a simple string */ | |
380 | ||
381 | if (return_object->common.type == ACPI_TYPE_STRING) { | |
29a241cc | 382 | status = acpi_ns_repair_HID(info, return_object_ptr); |
77b23f71 BM |
383 | return (status); |
384 | } | |
385 | ||
386 | /* Exit if not a Package */ | |
387 | ||
388 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
389 | return (AE_OK); | |
390 | } | |
391 | ||
392 | /* Examine each element of the _CID package */ | |
393 | ||
394 | element_ptr = return_object->package.elements; | |
395 | for (i = 0; i < return_object->package.count; i++) { | |
396 | original_element = *element_ptr; | |
397 | original_ref_count = original_element->common.reference_count; | |
398 | ||
29a241cc | 399 | status = acpi_ns_repair_HID(info, element_ptr); |
77b23f71 BM |
400 | if (ACPI_FAILURE(status)) { |
401 | return (status); | |
402 | } | |
403 | ||
404 | /* Take care with reference counts */ | |
405 | ||
406 | if (original_element != *element_ptr) { | |
407 | ||
408 | /* Element was replaced */ | |
409 | ||
410 | (*element_ptr)->common.reference_count = | |
411 | original_ref_count; | |
412 | ||
413 | acpi_ut_remove_reference(original_element); | |
414 | } | |
415 | ||
416 | element_ptr++; | |
417 | } | |
418 | ||
419 | return (AE_OK); | |
420 | } | |
421 | ||
5a9792f3 LZ |
422 | /****************************************************************************** |
423 | * | |
424 | * FUNCTION: acpi_ns_repair_CST | |
425 | * | |
426 | * PARAMETERS: info - Method execution information block | |
427 | * return_object_ptr - Pointer to the object returned from the | |
428 | * evaluation of a method or object | |
429 | * | |
430 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
431 | * | |
432 | * DESCRIPTION: Repair for the _CST object: | |
433 | * 1. Sort the list ascending by C state type | |
434 | * 2. Ensure type cannot be zero | |
0a16d12a BM |
435 | * 3. A subpackage count of zero means _CST is meaningless |
436 | * 4. Count must match the number of C state subpackages | |
5a9792f3 LZ |
437 | * |
438 | *****************************************************************************/ | |
439 | ||
440 | static acpi_status | |
441 | acpi_ns_repair_CST(struct acpi_evaluate_info *info, | |
442 | union acpi_operand_object **return_object_ptr) | |
443 | { | |
444 | union acpi_operand_object *return_object = *return_object_ptr; | |
445 | union acpi_operand_object **outer_elements; | |
446 | u32 outer_element_count; | |
447 | union acpi_operand_object *obj_desc; | |
448 | acpi_status status; | |
449 | u8 removing; | |
450 | u32 i; | |
451 | ||
452 | ACPI_FUNCTION_NAME(ns_repair_CST); | |
453 | ||
454 | /* | |
341e7ba1 | 455 | * Check if the C-state type values are proportional. |
5a9792f3 LZ |
456 | */ |
457 | outer_element_count = return_object->package.count - 1; | |
458 | i = 0; | |
459 | while (i < outer_element_count) { | |
460 | outer_elements = &return_object->package.elements[i + 1]; | |
461 | removing = FALSE; | |
462 | ||
463 | if ((*outer_elements)->package.count == 0) { | |
464 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, | |
465 | info->node_flags, | |
466 | "SubPackage[%u] - removing entry due to zero count", | |
467 | i)); | |
468 | removing = TRUE; | |
469 | goto remove_element; | |
470 | } | |
471 | ||
472 | obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */ | |
473 | if ((u32)obj_desc->integer.value == 0) { | |
474 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, | |
475 | info->node_flags, | |
476 | "SubPackage[%u] - removing entry due to invalid Type(0)", | |
477 | i)); | |
478 | removing = TRUE; | |
479 | } | |
480 | ||
10622bf8 | 481 | remove_element: |
5a9792f3 LZ |
482 | if (removing) { |
483 | acpi_ns_remove_element(return_object, i + 1); | |
484 | outer_element_count--; | |
485 | } else { | |
486 | i++; | |
487 | } | |
488 | } | |
489 | ||
490 | /* Update top-level package count, Type "Integer" checked elsewhere */ | |
491 | ||
492 | obj_desc = return_object->package.elements[0]; | |
493 | obj_desc->integer.value = outer_element_count; | |
341e7ba1 LZ |
494 | |
495 | /* | |
496 | * Entries (subpackages) in the _CST Package must be sorted by the | |
497 | * C-state type, in ascending order. | |
498 | */ | |
499 | status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1, | |
500 | ACPI_SORT_ASCENDING, "C-State Type"); | |
501 | if (ACPI_FAILURE(status)) { | |
502 | return (status); | |
503 | } | |
504 | ||
5a9792f3 LZ |
505 | return (AE_OK); |
506 | } | |
507 | ||
77b23f71 BM |
508 | /****************************************************************************** |
509 | * | |
510 | * FUNCTION: acpi_ns_repair_HID | |
511 | * | |
29a241cc | 512 | * PARAMETERS: info - Method execution information block |
77b23f71 BM |
513 | * return_object_ptr - Pointer to the object returned from the |
514 | * evaluation of a method or object | |
515 | * | |
516 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
517 | * | |
518 | * DESCRIPTION: Repair for the _HID object. If a string, ensure that all | |
519 | * letters are uppercase and that there is no leading asterisk. | |
520 | * | |
521 | *****************************************************************************/ | |
522 | ||
523 | static acpi_status | |
29a241cc | 524 | acpi_ns_repair_HID(struct acpi_evaluate_info *info, |
77b23f71 BM |
525 | union acpi_operand_object **return_object_ptr) |
526 | { | |
527 | union acpi_operand_object *return_object = *return_object_ptr; | |
528 | union acpi_operand_object *new_string; | |
529 | char *source; | |
530 | char *dest; | |
531 | ||
532 | ACPI_FUNCTION_NAME(ns_repair_HID); | |
533 | ||
534 | /* We only care about string _HID objects (not integers) */ | |
535 | ||
536 | if (return_object->common.type != ACPI_TYPE_STRING) { | |
537 | return (AE_OK); | |
538 | } | |
539 | ||
540 | if (return_object->string.length == 0) { | |
29a241cc BM |
541 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, |
542 | info->node_flags, | |
77b23f71 BM |
543 | "Invalid zero-length _HID or _CID string")); |
544 | ||
545 | /* Return AE_OK anyway, let driver handle it */ | |
546 | ||
29a241cc | 547 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
77b23f71 BM |
548 | return (AE_OK); |
549 | } | |
550 | ||
551 | /* It is simplest to always create a new string object */ | |
552 | ||
553 | new_string = acpi_ut_create_string_object(return_object->string.length); | |
554 | if (!new_string) { | |
555 | return (AE_NO_MEMORY); | |
556 | } | |
557 | ||
558 | /* | |
559 | * Remove a leading asterisk if present. For some unknown reason, there | |
560 | * are many machines in the field that contains IDs like this. | |
561 | * | |
562 | * Examples: "*PNP0C03", "*ACPI0003" | |
563 | */ | |
564 | source = return_object->string.pointer; | |
565 | if (*source == '*') { | |
566 | source++; | |
567 | new_string->string.length--; | |
568 | ||
569 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, | |
570 | "%s: Removed invalid leading asterisk\n", | |
29a241cc | 571 | info->full_pathname)); |
77b23f71 BM |
572 | } |
573 | ||
574 | /* | |
7fce7a4b | 575 | * Copy and uppercase the string. From the ACPI 5.0 specification: |
77b23f71 BM |
576 | * |
577 | * A valid PNP ID must be of the form "AAA####" where A is an uppercase | |
578 | * letter and # is a hex digit. A valid ACPI ID must be of the form | |
7fce7a4b BM |
579 | * "NNNN####" where N is an uppercase letter or decimal digit, and |
580 | * # is a hex digit. | |
77b23f71 BM |
581 | */ |
582 | for (dest = new_string->string.pointer; *source; dest++, source++) { | |
4fa4616e | 583 | *dest = (char)toupper((int)*source); |
77b23f71 BM |
584 | } |
585 | ||
586 | acpi_ut_remove_reference(return_object); | |
587 | *return_object_ptr = new_string; | |
588 | return (AE_OK); | |
34c39c75 BM |
589 | } |
590 | ||
ad5babee BM |
591 | /****************************************************************************** |
592 | * | |
aa6329c4 | 593 | * FUNCTION: acpi_ns_repair_PRT |
ad5babee | 594 | * |
29a241cc | 595 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
596 | * return_object_ptr - Pointer to the object returned from the |
597 | * evaluation of a method or object | |
598 | * | |
599 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
600 | * | |
aa6329c4 LZ |
601 | * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed |
602 | * source_name and source_index field, a common BIOS bug. | |
ad5babee BM |
603 | * |
604 | *****************************************************************************/ | |
605 | ||
606 | static acpi_status | |
aa6329c4 | 607 | acpi_ns_repair_PRT(struct acpi_evaluate_info *info, |
ad5babee BM |
608 | union acpi_operand_object **return_object_ptr) |
609 | { | |
aa6329c4 LZ |
610 | union acpi_operand_object *package_object = *return_object_ptr; |
611 | union acpi_operand_object **top_object_list; | |
612 | union acpi_operand_object **sub_object_list; | |
613 | union acpi_operand_object *obj_desc; | |
1c3c2a54 | 614 | union acpi_operand_object *sub_package; |
aa6329c4 LZ |
615 | u32 element_count; |
616 | u32 index; | |
8f9c9127 | 617 | |
aa6329c4 | 618 | /* Each element in the _PRT package is a subpackage */ |
ad5babee | 619 | |
aa6329c4 LZ |
620 | top_object_list = package_object->package.elements; |
621 | element_count = package_object->package.count; | |
ad5babee | 622 | |
69e6bb68 BM |
623 | /* Examine each subpackage */ |
624 | ||
625 | for (index = 0; index < element_count; index++, top_object_list++) { | |
1c3c2a54 BM |
626 | sub_package = *top_object_list; |
627 | sub_object_list = sub_package->package.elements; | |
628 | ||
69e6bb68 BM |
629 | /* Check for minimum required element count */ |
630 | ||
631 | if (sub_package->package.count < 4) { | |
632 | continue; | |
1c3c2a54 | 633 | } |
aa6329c4 LZ |
634 | |
635 | /* | |
636 | * If the BIOS has erroneously reversed the _PRT source_name (index 2) | |
637 | * and the source_index (index 3), fix it. _PRT is important enough to | |
638 | * workaround this BIOS error. This also provides compatibility with | |
639 | * other ACPI implementations. | |
640 | */ | |
641 | obj_desc = sub_object_list[3]; | |
642 | if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { | |
643 | sub_object_list[3] = sub_object_list[2]; | |
644 | sub_object_list[2] = obj_desc; | |
645 | info->return_flags |= ACPI_OBJECT_REPAIRED; | |
646 | ||
69e6bb68 BM |
647 | ACPI_WARN_PREDEFINED((AE_INFO, |
648 | info->full_pathname, | |
aa6329c4 LZ |
649 | info->node_flags, |
650 | "PRT[%X]: Fixed reversed SourceName and SourceIndex", | |
651 | index)); | |
652 | } | |
aa6329c4 LZ |
653 | } |
654 | ||
655 | return (AE_OK); | |
ad5babee BM |
656 | } |
657 | ||
658 | /****************************************************************************** | |
659 | * | |
660 | * FUNCTION: acpi_ns_repair_PSS | |
661 | * | |
29a241cc | 662 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
663 | * return_object_ptr - Pointer to the object returned from the |
664 | * evaluation of a method or object | |
665 | * | |
666 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
667 | * | |
668 | * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list | |
669 | * by the CPU frequencies. Check that the power dissipation values | |
670 | * are all proportional to CPU frequency (i.e., sorting by | |
671 | * frequency should be the same as sorting by power.) | |
672 | * | |
673 | *****************************************************************************/ | |
674 | ||
675 | static acpi_status | |
29a241cc | 676 | acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
ad5babee BM |
677 | union acpi_operand_object **return_object_ptr) |
678 | { | |
679 | union acpi_operand_object *return_object = *return_object_ptr; | |
680 | union acpi_operand_object **outer_elements; | |
681 | u32 outer_element_count; | |
682 | union acpi_operand_object **elements; | |
683 | union acpi_operand_object *obj_desc; | |
684 | u32 previous_value; | |
685 | acpi_status status; | |
686 | u32 i; | |
687 | ||
688 | /* | |
0a16d12a | 689 | * Entries (subpackages) in the _PSS Package must be sorted by power |
ad5babee BM |
690 | * dissipation, in descending order. If it appears that the list is |
691 | * incorrectly sorted, sort it. We sort by cpu_frequency, since this | |
692 | * should be proportional to the power. | |
693 | */ | |
5a9792f3 | 694 | status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0, |
ad5babee BM |
695 | ACPI_SORT_DESCENDING, |
696 | "CpuFrequency"); | |
697 | if (ACPI_FAILURE(status)) { | |
698 | return (status); | |
699 | } | |
700 | ||
701 | /* | |
702 | * We now know the list is correctly sorted by CPU frequency. Check if | |
703 | * the power dissipation values are proportional. | |
704 | */ | |
705 | previous_value = ACPI_UINT32_MAX; | |
706 | outer_elements = return_object->package.elements; | |
707 | outer_element_count = return_object->package.count; | |
708 | ||
709 | for (i = 0; i < outer_element_count; i++) { | |
710 | elements = (*outer_elements)->package.elements; | |
711 | obj_desc = elements[1]; /* Index1 = power_dissipation */ | |
712 | ||
713 | if ((u32) obj_desc->integer.value > previous_value) { | |
29a241cc BM |
714 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, |
715 | info->node_flags, | |
ad5babee BM |
716 | "SubPackage[%u,%u] - suspicious power dissipation values", |
717 | i - 1, i)); | |
718 | } | |
719 | ||
720 | previous_value = (u32) obj_desc->integer.value; | |
721 | outer_elements++; | |
722 | } | |
723 | ||
724 | return (AE_OK); | |
725 | } | |
726 | ||
aa6329c4 LZ |
727 | /****************************************************************************** |
728 | * | |
729 | * FUNCTION: acpi_ns_repair_TSS | |
730 | * | |
731 | * PARAMETERS: info - Method execution information block | |
732 | * return_object_ptr - Pointer to the object returned from the | |
733 | * evaluation of a method or object | |
734 | * | |
735 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
736 | * | |
737 | * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list | |
738 | * descending by the power dissipation values. | |
739 | * | |
740 | *****************************************************************************/ | |
741 | ||
742 | static acpi_status | |
743 | acpi_ns_repair_TSS(struct acpi_evaluate_info *info, | |
744 | union acpi_operand_object **return_object_ptr) | |
745 | { | |
746 | union acpi_operand_object *return_object = *return_object_ptr; | |
747 | acpi_status status; | |
748 | struct acpi_namespace_node *node; | |
749 | ||
750 | /* | |
751 | * We can only sort the _TSS return package if there is no _PSS in the | |
752 | * same scope. This is because if _PSS is present, the ACPI specification | |
753 | * dictates that the _TSS Power Dissipation field is to be ignored, and | |
754 | * therefore some BIOSs leave garbage values in the _TSS Power field(s). | |
755 | * In this case, it is best to just return the _TSS package as-is. | |
756 | * (May, 2011) | |
757 | */ | |
758 | status = acpi_ns_get_node(info->node, "^_PSS", | |
759 | ACPI_NS_NO_UPSEARCH, &node); | |
760 | if (ACPI_SUCCESS(status)) { | |
761 | return (AE_OK); | |
762 | } | |
763 | ||
5a9792f3 | 764 | status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1, |
aa6329c4 LZ |
765 | ACPI_SORT_DESCENDING, |
766 | "PowerDissipation"); | |
767 | ||
768 | return (status); | |
769 | } | |
770 | ||
ad5babee BM |
771 | /****************************************************************************** |
772 | * | |
773 | * FUNCTION: acpi_ns_check_sorted_list | |
774 | * | |
29a241cc | 775 | * PARAMETERS: info - Method execution information block |
ad5babee | 776 | * return_object - Pointer to the top-level returned object |
0a16d12a BM |
777 | * start_index - Index of the first subpackage |
778 | * expected_count - Minimum length of each subpackage | |
779 | * sort_index - Subpackage entry to sort on | |
ad5babee BM |
780 | * sort_direction - Ascending or descending |
781 | * sort_key_name - Name of the sort_index field | |
782 | * | |
783 | * RETURN: Status. AE_OK if the list is valid and is sorted correctly or | |
784 | * has been repaired by sorting the list. | |
785 | * | |
786 | * DESCRIPTION: Check if the package list is valid and sorted correctly by the | |
787 | * sort_index. If not, then sort the list. | |
788 | * | |
789 | *****************************************************************************/ | |
790 | ||
791 | static acpi_status | |
29a241cc | 792 | acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
ad5babee | 793 | union acpi_operand_object *return_object, |
5a9792f3 | 794 | u32 start_index, |
ad5babee BM |
795 | u32 expected_count, |
796 | u32 sort_index, | |
797 | u8 sort_direction, char *sort_key_name) | |
798 | { | |
799 | u32 outer_element_count; | |
800 | union acpi_operand_object **outer_elements; | |
801 | union acpi_operand_object **elements; | |
802 | union acpi_operand_object *obj_desc; | |
803 | u32 i; | |
804 | u32 previous_value; | |
ad5babee | 805 | |
3a58176e BM |
806 | ACPI_FUNCTION_NAME(ns_check_sorted_list); |
807 | ||
ad5babee BM |
808 | /* The top-level object must be a package */ |
809 | ||
810 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
811 | return (AE_AML_OPERAND_TYPE); | |
812 | } | |
813 | ||
814 | /* | |
0a16d12a | 815 | * NOTE: assumes list of subpackages contains no NULL elements. |
d4085a3f BM |
816 | * Any NULL elements should have been removed by earlier call |
817 | * to acpi_ns_remove_null_elements. | |
ad5babee | 818 | */ |
ad5babee | 819 | outer_element_count = return_object->package.count; |
5a9792f3 | 820 | if (!outer_element_count || start_index >= outer_element_count) { |
ad5babee BM |
821 | return (AE_AML_PACKAGE_LIMIT); |
822 | } | |
823 | ||
5a9792f3 LZ |
824 | outer_elements = &return_object->package.elements[start_index]; |
825 | outer_element_count -= start_index; | |
826 | ||
ad5babee BM |
827 | previous_value = 0; |
828 | if (sort_direction == ACPI_SORT_DESCENDING) { | |
829 | previous_value = ACPI_UINT32_MAX; | |
830 | } | |
831 | ||
832 | /* Examine each subpackage */ | |
833 | ||
834 | for (i = 0; i < outer_element_count; i++) { | |
835 | ||
836 | /* Each element of the top-level package must also be a package */ | |
837 | ||
838 | if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) { | |
839 | return (AE_AML_OPERAND_TYPE); | |
840 | } | |
841 | ||
0a16d12a | 842 | /* Each subpackage must have the minimum length */ |
ad5babee BM |
843 | |
844 | if ((*outer_elements)->package.count < expected_count) { | |
845 | return (AE_AML_PACKAGE_LIMIT); | |
846 | } | |
847 | ||
848 | elements = (*outer_elements)->package.elements; | |
849 | obj_desc = elements[sort_index]; | |
850 | ||
851 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { | |
852 | return (AE_AML_OPERAND_TYPE); | |
853 | } | |
854 | ||
855 | /* | |
856 | * The list must be sorted in the specified order. If we detect a | |
2147d3f0 | 857 | * discrepancy, sort the entire list. |
ad5babee BM |
858 | */ |
859 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
860 | (obj_desc->integer.value < previous_value)) || | |
861 | ((sort_direction == ACPI_SORT_DESCENDING) && | |
862 | (obj_desc->integer.value > previous_value))) { | |
5a9792f3 LZ |
863 | acpi_ns_sort_list(&return_object->package. |
864 | elements[start_index], | |
2147d3f0 BM |
865 | outer_element_count, sort_index, |
866 | sort_direction); | |
ad5babee | 867 | |
29a241cc | 868 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
ad5babee | 869 | |
3a58176e BM |
870 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
871 | "%s: Repaired unsorted list - now sorted by %s\n", | |
29a241cc | 872 | info->full_pathname, sort_key_name)); |
ad5babee BM |
873 | return (AE_OK); |
874 | } | |
875 | ||
876 | previous_value = (u32) obj_desc->integer.value; | |
877 | outer_elements++; | |
878 | } | |
879 | ||
880 | return (AE_OK); | |
881 | } | |
882 | ||
ad5babee BM |
883 | /****************************************************************************** |
884 | * | |
885 | * FUNCTION: acpi_ns_sort_list | |
886 | * | |
ba494bee BM |
887 | * PARAMETERS: elements - Package object element list |
888 | * count - Element count for above | |
889 | * index - Sort by which package element | |
ad5babee BM |
890 | * sort_direction - Ascending or Descending sort |
891 | * | |
2147d3f0 | 892 | * RETURN: None |
ad5babee BM |
893 | * |
894 | * DESCRIPTION: Sort the objects that are in a package element list. | |
895 | * | |
2147d3f0 BM |
896 | * NOTE: Assumes that all NULL elements have been removed from the package, |
897 | * and that all elements have been verified to be of type Integer. | |
ad5babee BM |
898 | * |
899 | *****************************************************************************/ | |
900 | ||
2147d3f0 | 901 | static void |
ad5babee BM |
902 | acpi_ns_sort_list(union acpi_operand_object **elements, |
903 | u32 count, u32 index, u8 sort_direction) | |
904 | { | |
905 | union acpi_operand_object *obj_desc1; | |
906 | union acpi_operand_object *obj_desc2; | |
907 | union acpi_operand_object *temp_obj; | |
908 | u32 i; | |
909 | u32 j; | |
910 | ||
911 | /* Simple bubble sort */ | |
912 | ||
913 | for (i = 1; i < count; i++) { | |
914 | for (j = (count - 1); j >= i; j--) { | |
915 | obj_desc1 = elements[j - 1]->package.elements[index]; | |
916 | obj_desc2 = elements[j]->package.elements[index]; | |
917 | ||
918 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
919 | (obj_desc1->integer.value > | |
920 | obj_desc2->integer.value)) | |
921 | || ((sort_direction == ACPI_SORT_DESCENDING) | |
922 | && (obj_desc1->integer.value < | |
923 | obj_desc2->integer.value))) { | |
924 | temp_obj = elements[j - 1]; | |
925 | elements[j - 1] = elements[j]; | |
926 | elements[j] = temp_obj; | |
927 | } | |
928 | } | |
929 | } | |
ad5babee | 930 | } |
5a9792f3 LZ |
931 | |
932 | /****************************************************************************** | |
933 | * | |
934 | * FUNCTION: acpi_ns_remove_element | |
935 | * | |
936 | * PARAMETERS: obj_desc - Package object element list | |
937 | * index - Index of element to remove | |
938 | * | |
939 | * RETURN: None | |
940 | * | |
941 | * DESCRIPTION: Remove the requested element of a package and delete it. | |
942 | * | |
943 | *****************************************************************************/ | |
944 | ||
945 | static void | |
946 | acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index) | |
947 | { | |
948 | union acpi_operand_object **source; | |
949 | union acpi_operand_object **dest; | |
950 | u32 count; | |
951 | u32 new_count; | |
952 | u32 i; | |
953 | ||
954 | ACPI_FUNCTION_NAME(ns_remove_element); | |
955 | ||
956 | count = obj_desc->package.count; | |
957 | new_count = count - 1; | |
958 | ||
959 | source = obj_desc->package.elements; | |
960 | dest = source; | |
961 | ||
962 | /* Examine all elements of the package object, remove matched index */ | |
963 | ||
964 | for (i = 0; i < count; i++) { | |
965 | if (i == index) { | |
966 | acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */ | |
967 | acpi_ut_remove_reference(*source); | |
968 | } else { | |
969 | *dest = *source; | |
970 | dest++; | |
971 | } | |
972 | source++; | |
973 | } | |
974 | ||
975 | /* NULL terminate list and update the package count */ | |
976 | ||
977 | *dest = NULL; | |
978 | obj_desc->package.count = new_count; | |
979 | } |