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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 | /* | |
25f044e6 | 9 | * Copyright (C) 2000 - 2013, 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 | |
435 | * 3. A sub-package count of zero means _CST is meaningless | |
436 | * 4. Count must match the number of C state sub-packages | |
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++) { | |
583 | *dest = (char)ACPI_TOUPPER(*source); | |
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; | |
614 | u32 element_count; | |
615 | u32 index; | |
8f9c9127 | 616 | |
aa6329c4 | 617 | /* Each element in the _PRT package is a subpackage */ |
ad5babee | 618 | |
aa6329c4 LZ |
619 | top_object_list = package_object->package.elements; |
620 | element_count = package_object->package.count; | |
ad5babee | 621 | |
aa6329c4 LZ |
622 | for (index = 0; index < element_count; index++) { |
623 | sub_object_list = (*top_object_list)->package.elements; | |
624 | ||
625 | /* | |
626 | * If the BIOS has erroneously reversed the _PRT source_name (index 2) | |
627 | * and the source_index (index 3), fix it. _PRT is important enough to | |
628 | * workaround this BIOS error. This also provides compatibility with | |
629 | * other ACPI implementations. | |
630 | */ | |
631 | obj_desc = sub_object_list[3]; | |
632 | if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { | |
633 | sub_object_list[3] = sub_object_list[2]; | |
634 | sub_object_list[2] = obj_desc; | |
635 | info->return_flags |= ACPI_OBJECT_REPAIRED; | |
636 | ||
637 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, | |
638 | info->node_flags, | |
639 | "PRT[%X]: Fixed reversed SourceName and SourceIndex", | |
640 | index)); | |
641 | } | |
642 | ||
643 | /* Point to the next union acpi_operand_object in the top level package */ | |
644 | ||
645 | top_object_list++; | |
646 | } | |
647 | ||
648 | return (AE_OK); | |
ad5babee BM |
649 | } |
650 | ||
651 | /****************************************************************************** | |
652 | * | |
653 | * FUNCTION: acpi_ns_repair_PSS | |
654 | * | |
29a241cc | 655 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
656 | * return_object_ptr - Pointer to the object returned from the |
657 | * evaluation of a method or object | |
658 | * | |
659 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
660 | * | |
661 | * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list | |
662 | * by the CPU frequencies. Check that the power dissipation values | |
663 | * are all proportional to CPU frequency (i.e., sorting by | |
664 | * frequency should be the same as sorting by power.) | |
665 | * | |
666 | *****************************************************************************/ | |
667 | ||
668 | static acpi_status | |
29a241cc | 669 | acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
ad5babee BM |
670 | union acpi_operand_object **return_object_ptr) |
671 | { | |
672 | union acpi_operand_object *return_object = *return_object_ptr; | |
673 | union acpi_operand_object **outer_elements; | |
674 | u32 outer_element_count; | |
675 | union acpi_operand_object **elements; | |
676 | union acpi_operand_object *obj_desc; | |
677 | u32 previous_value; | |
678 | acpi_status status; | |
679 | u32 i; | |
680 | ||
681 | /* | |
682 | * Entries (sub-packages) in the _PSS Package must be sorted by power | |
683 | * dissipation, in descending order. If it appears that the list is | |
684 | * incorrectly sorted, sort it. We sort by cpu_frequency, since this | |
685 | * should be proportional to the power. | |
686 | */ | |
5a9792f3 | 687 | status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0, |
ad5babee BM |
688 | ACPI_SORT_DESCENDING, |
689 | "CpuFrequency"); | |
690 | if (ACPI_FAILURE(status)) { | |
691 | return (status); | |
692 | } | |
693 | ||
694 | /* | |
695 | * We now know the list is correctly sorted by CPU frequency. Check if | |
696 | * the power dissipation values are proportional. | |
697 | */ | |
698 | previous_value = ACPI_UINT32_MAX; | |
699 | outer_elements = return_object->package.elements; | |
700 | outer_element_count = return_object->package.count; | |
701 | ||
702 | for (i = 0; i < outer_element_count; i++) { | |
703 | elements = (*outer_elements)->package.elements; | |
704 | obj_desc = elements[1]; /* Index1 = power_dissipation */ | |
705 | ||
706 | if ((u32) obj_desc->integer.value > previous_value) { | |
29a241cc BM |
707 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, |
708 | info->node_flags, | |
ad5babee BM |
709 | "SubPackage[%u,%u] - suspicious power dissipation values", |
710 | i - 1, i)); | |
711 | } | |
712 | ||
713 | previous_value = (u32) obj_desc->integer.value; | |
714 | outer_elements++; | |
715 | } | |
716 | ||
717 | return (AE_OK); | |
718 | } | |
719 | ||
aa6329c4 LZ |
720 | /****************************************************************************** |
721 | * | |
722 | * FUNCTION: acpi_ns_repair_TSS | |
723 | * | |
724 | * PARAMETERS: info - Method execution information block | |
725 | * return_object_ptr - Pointer to the object returned from the | |
726 | * evaluation of a method or object | |
727 | * | |
728 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
729 | * | |
730 | * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list | |
731 | * descending by the power dissipation values. | |
732 | * | |
733 | *****************************************************************************/ | |
734 | ||
735 | static acpi_status | |
736 | acpi_ns_repair_TSS(struct acpi_evaluate_info *info, | |
737 | union acpi_operand_object **return_object_ptr) | |
738 | { | |
739 | union acpi_operand_object *return_object = *return_object_ptr; | |
740 | acpi_status status; | |
741 | struct acpi_namespace_node *node; | |
742 | ||
743 | /* | |
744 | * We can only sort the _TSS return package if there is no _PSS in the | |
745 | * same scope. This is because if _PSS is present, the ACPI specification | |
746 | * dictates that the _TSS Power Dissipation field is to be ignored, and | |
747 | * therefore some BIOSs leave garbage values in the _TSS Power field(s). | |
748 | * In this case, it is best to just return the _TSS package as-is. | |
749 | * (May, 2011) | |
750 | */ | |
751 | status = acpi_ns_get_node(info->node, "^_PSS", | |
752 | ACPI_NS_NO_UPSEARCH, &node); | |
753 | if (ACPI_SUCCESS(status)) { | |
754 | return (AE_OK); | |
755 | } | |
756 | ||
5a9792f3 | 757 | status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1, |
aa6329c4 LZ |
758 | ACPI_SORT_DESCENDING, |
759 | "PowerDissipation"); | |
760 | ||
761 | return (status); | |
762 | } | |
763 | ||
ad5babee BM |
764 | /****************************************************************************** |
765 | * | |
766 | * FUNCTION: acpi_ns_check_sorted_list | |
767 | * | |
29a241cc | 768 | * PARAMETERS: info - Method execution information block |
ad5babee | 769 | * return_object - Pointer to the top-level returned object |
5a9792f3 | 770 | * start_index - Index of the first sub-package |
ad5babee BM |
771 | * expected_count - Minimum length of each sub-package |
772 | * sort_index - Sub-package entry to sort on | |
773 | * sort_direction - Ascending or descending | |
774 | * sort_key_name - Name of the sort_index field | |
775 | * | |
776 | * RETURN: Status. AE_OK if the list is valid and is sorted correctly or | |
777 | * has been repaired by sorting the list. | |
778 | * | |
779 | * DESCRIPTION: Check if the package list is valid and sorted correctly by the | |
780 | * sort_index. If not, then sort the list. | |
781 | * | |
782 | *****************************************************************************/ | |
783 | ||
784 | static acpi_status | |
29a241cc | 785 | acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
ad5babee | 786 | union acpi_operand_object *return_object, |
5a9792f3 | 787 | u32 start_index, |
ad5babee BM |
788 | u32 expected_count, |
789 | u32 sort_index, | |
790 | u8 sort_direction, char *sort_key_name) | |
791 | { | |
792 | u32 outer_element_count; | |
793 | union acpi_operand_object **outer_elements; | |
794 | union acpi_operand_object **elements; | |
795 | union acpi_operand_object *obj_desc; | |
796 | u32 i; | |
797 | u32 previous_value; | |
ad5babee | 798 | |
3a58176e BM |
799 | ACPI_FUNCTION_NAME(ns_check_sorted_list); |
800 | ||
ad5babee BM |
801 | /* The top-level object must be a package */ |
802 | ||
803 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
804 | return (AE_AML_OPERAND_TYPE); | |
805 | } | |
806 | ||
807 | /* | |
d4085a3f BM |
808 | * NOTE: assumes list of sub-packages contains no NULL elements. |
809 | * Any NULL elements should have been removed by earlier call | |
810 | * to acpi_ns_remove_null_elements. | |
ad5babee | 811 | */ |
ad5babee | 812 | outer_element_count = return_object->package.count; |
5a9792f3 | 813 | if (!outer_element_count || start_index >= outer_element_count) { |
ad5babee BM |
814 | return (AE_AML_PACKAGE_LIMIT); |
815 | } | |
816 | ||
5a9792f3 LZ |
817 | outer_elements = &return_object->package.elements[start_index]; |
818 | outer_element_count -= start_index; | |
819 | ||
ad5babee BM |
820 | previous_value = 0; |
821 | if (sort_direction == ACPI_SORT_DESCENDING) { | |
822 | previous_value = ACPI_UINT32_MAX; | |
823 | } | |
824 | ||
825 | /* Examine each subpackage */ | |
826 | ||
827 | for (i = 0; i < outer_element_count; i++) { | |
828 | ||
829 | /* Each element of the top-level package must also be a package */ | |
830 | ||
831 | if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) { | |
832 | return (AE_AML_OPERAND_TYPE); | |
833 | } | |
834 | ||
835 | /* Each sub-package must have the minimum length */ | |
836 | ||
837 | if ((*outer_elements)->package.count < expected_count) { | |
838 | return (AE_AML_PACKAGE_LIMIT); | |
839 | } | |
840 | ||
841 | elements = (*outer_elements)->package.elements; | |
842 | obj_desc = elements[sort_index]; | |
843 | ||
844 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { | |
845 | return (AE_AML_OPERAND_TYPE); | |
846 | } | |
847 | ||
848 | /* | |
849 | * The list must be sorted in the specified order. If we detect a | |
2147d3f0 | 850 | * discrepancy, sort the entire list. |
ad5babee BM |
851 | */ |
852 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
853 | (obj_desc->integer.value < previous_value)) || | |
854 | ((sort_direction == ACPI_SORT_DESCENDING) && | |
855 | (obj_desc->integer.value > previous_value))) { | |
5a9792f3 LZ |
856 | acpi_ns_sort_list(&return_object->package. |
857 | elements[start_index], | |
2147d3f0 BM |
858 | outer_element_count, sort_index, |
859 | sort_direction); | |
ad5babee | 860 | |
29a241cc | 861 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
ad5babee | 862 | |
3a58176e BM |
863 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
864 | "%s: Repaired unsorted list - now sorted by %s\n", | |
29a241cc | 865 | info->full_pathname, sort_key_name)); |
ad5babee BM |
866 | return (AE_OK); |
867 | } | |
868 | ||
869 | previous_value = (u32) obj_desc->integer.value; | |
870 | outer_elements++; | |
871 | } | |
872 | ||
873 | return (AE_OK); | |
874 | } | |
875 | ||
ad5babee BM |
876 | /****************************************************************************** |
877 | * | |
878 | * FUNCTION: acpi_ns_sort_list | |
879 | * | |
ba494bee BM |
880 | * PARAMETERS: elements - Package object element list |
881 | * count - Element count for above | |
882 | * index - Sort by which package element | |
ad5babee BM |
883 | * sort_direction - Ascending or Descending sort |
884 | * | |
2147d3f0 | 885 | * RETURN: None |
ad5babee BM |
886 | * |
887 | * DESCRIPTION: Sort the objects that are in a package element list. | |
888 | * | |
2147d3f0 BM |
889 | * NOTE: Assumes that all NULL elements have been removed from the package, |
890 | * and that all elements have been verified to be of type Integer. | |
ad5babee BM |
891 | * |
892 | *****************************************************************************/ | |
893 | ||
2147d3f0 | 894 | static void |
ad5babee BM |
895 | acpi_ns_sort_list(union acpi_operand_object **elements, |
896 | u32 count, u32 index, u8 sort_direction) | |
897 | { | |
898 | union acpi_operand_object *obj_desc1; | |
899 | union acpi_operand_object *obj_desc2; | |
900 | union acpi_operand_object *temp_obj; | |
901 | u32 i; | |
902 | u32 j; | |
903 | ||
904 | /* Simple bubble sort */ | |
905 | ||
906 | for (i = 1; i < count; i++) { | |
907 | for (j = (count - 1); j >= i; j--) { | |
908 | obj_desc1 = elements[j - 1]->package.elements[index]; | |
909 | obj_desc2 = elements[j]->package.elements[index]; | |
910 | ||
911 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
912 | (obj_desc1->integer.value > | |
913 | obj_desc2->integer.value)) | |
914 | || ((sort_direction == ACPI_SORT_DESCENDING) | |
915 | && (obj_desc1->integer.value < | |
916 | obj_desc2->integer.value))) { | |
917 | temp_obj = elements[j - 1]; | |
918 | elements[j - 1] = elements[j]; | |
919 | elements[j] = temp_obj; | |
920 | } | |
921 | } | |
922 | } | |
ad5babee | 923 | } |
5a9792f3 LZ |
924 | |
925 | /****************************************************************************** | |
926 | * | |
927 | * FUNCTION: acpi_ns_remove_element | |
928 | * | |
929 | * PARAMETERS: obj_desc - Package object element list | |
930 | * index - Index of element to remove | |
931 | * | |
932 | * RETURN: None | |
933 | * | |
934 | * DESCRIPTION: Remove the requested element of a package and delete it. | |
935 | * | |
936 | *****************************************************************************/ | |
937 | ||
938 | static void | |
939 | acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index) | |
940 | { | |
941 | union acpi_operand_object **source; | |
942 | union acpi_operand_object **dest; | |
943 | u32 count; | |
944 | u32 new_count; | |
945 | u32 i; | |
946 | ||
947 | ACPI_FUNCTION_NAME(ns_remove_element); | |
948 | ||
949 | count = obj_desc->package.count; | |
950 | new_count = count - 1; | |
951 | ||
952 | source = obj_desc->package.elements; | |
953 | dest = source; | |
954 | ||
955 | /* Examine all elements of the package object, remove matched index */ | |
956 | ||
957 | for (i = 0; i < count; i++) { | |
958 | if (i == index) { | |
959 | acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */ | |
960 | acpi_ut_remove_reference(*source); | |
961 | } else { | |
962 | *dest = *source; | |
963 | dest++; | |
964 | } | |
965 | source++; | |
966 | } | |
967 | ||
968 | /* NULL terminate list and update the package count */ | |
969 | ||
970 | *dest = NULL; | |
971 | obj_desc->package.count = new_count; | |
972 | } |