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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 | /* | |
77848130 | 9 | * Copyright (C) 2000 - 2012, 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 | |
57 | acpi_status(*acpi_repair_function) (struct acpi_predefined_data *data, | |
58 | union acpi_operand_object **return_object_ptr); | |
59 | ||
60 | typedef struct acpi_repair_info { | |
61 | char name[ACPI_NAME_SIZE]; | |
62 | acpi_repair_function repair_function; | |
63 | ||
64 | } acpi_repair_info; | |
65 | ||
66 | /* Local prototypes */ | |
67 | ||
68 | static const struct acpi_repair_info *acpi_ns_match_repairable_name(struct | |
69 | acpi_namespace_node | |
70 | *node); | |
71 | ||
72 | static acpi_status | |
73 | acpi_ns_repair_ALR(struct acpi_predefined_data *data, | |
74 | union acpi_operand_object **return_object_ptr); | |
75 | ||
77b23f71 BM |
76 | static acpi_status |
77 | acpi_ns_repair_CID(struct acpi_predefined_data *data, | |
78 | union acpi_operand_object **return_object_ptr); | |
79 | ||
34c39c75 BM |
80 | static acpi_status |
81 | acpi_ns_repair_FDE(struct acpi_predefined_data *data, | |
82 | union acpi_operand_object **return_object_ptr); | |
83 | ||
77b23f71 BM |
84 | static acpi_status |
85 | acpi_ns_repair_HID(struct acpi_predefined_data *data, | |
86 | union acpi_operand_object **return_object_ptr); | |
87 | ||
ad5babee BM |
88 | static acpi_status |
89 | acpi_ns_repair_PSS(struct acpi_predefined_data *data, | |
90 | union acpi_operand_object **return_object_ptr); | |
91 | ||
92 | static acpi_status | |
93 | acpi_ns_repair_TSS(struct acpi_predefined_data *data, | |
94 | union acpi_operand_object **return_object_ptr); | |
95 | ||
96 | static acpi_status | |
97 | acpi_ns_check_sorted_list(struct acpi_predefined_data *data, | |
98 | union acpi_operand_object *return_object, | |
99 | u32 expected_count, | |
100 | u32 sort_index, | |
101 | u8 sort_direction, char *sort_key_name); | |
102 | ||
2147d3f0 | 103 | static void |
ad5babee BM |
104 | acpi_ns_sort_list(union acpi_operand_object **elements, |
105 | u32 count, u32 index, u8 sort_direction); | |
106 | ||
107 | /* Values for sort_direction above */ | |
108 | ||
109 | #define ACPI_SORT_ASCENDING 0 | |
110 | #define ACPI_SORT_DESCENDING 1 | |
111 | ||
112 | /* | |
113 | * This table contains the names of the predefined methods for which we can | |
114 | * perform more complex repairs. | |
115 | * | |
34c39c75 BM |
116 | * As necessary: |
117 | * | |
118 | * _ALR: Sort the list ascending by ambient_illuminance | |
77b23f71 | 119 | * _CID: Strings: uppercase all, remove any leading asterisk |
43420bbb BM |
120 | * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs |
121 | * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs | |
77b23f71 | 122 | * _HID: Strings: uppercase all, remove any leading asterisk |
34c39c75 BM |
123 | * _PSS: Sort the list descending by Power |
124 | * _TSS: Sort the list descending by Power | |
aa9d3606 BM |
125 | * |
126 | * Names that must be packages, but cannot be sorted: | |
127 | * | |
128 | * _BCL: Values are tied to the Package index where they appear, and cannot | |
129 | * be moved or sorted. These index values are used for _BQC and _BCM. | |
130 | * However, we can fix the case where a buffer is returned, by converting | |
131 | * it to a Package of integers. | |
ad5babee BM |
132 | */ |
133 | static const struct acpi_repair_info acpi_ns_repairable_names[] = { | |
134 | {"_ALR", acpi_ns_repair_ALR}, | |
77b23f71 | 135 | {"_CID", acpi_ns_repair_CID}, |
34c39c75 BM |
136 | {"_FDE", acpi_ns_repair_FDE}, |
137 | {"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */ | |
77b23f71 | 138 | {"_HID", acpi_ns_repair_HID}, |
ad5babee BM |
139 | {"_PSS", acpi_ns_repair_PSS}, |
140 | {"_TSS", acpi_ns_repair_TSS}, | |
141 | {{0, 0, 0, 0}, NULL} /* Table terminator */ | |
142 | }; | |
143 | ||
34c39c75 BM |
144 | #define ACPI_FDE_FIELD_COUNT 5 |
145 | #define ACPI_FDE_BYTE_BUFFER_SIZE 5 | |
146 | #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (u32)) | |
147 | ||
ad5babee BM |
148 | /****************************************************************************** |
149 | * | |
150 | * FUNCTION: acpi_ns_complex_repairs | |
151 | * | |
152 | * PARAMETERS: Data - Pointer to validation data structure | |
153 | * Node - Namespace node for the method/object | |
154 | * validate_status - Original status of earlier validation | |
155 | * return_object_ptr - Pointer to the object returned from the | |
156 | * evaluation of a method or object | |
157 | * | |
158 | * RETURN: Status. AE_OK if repair was successful. If name is not | |
159 | * matched, validate_status is returned. | |
160 | * | |
161 | * DESCRIPTION: Attempt to repair/convert a return object of a type that was | |
162 | * not expected. | |
163 | * | |
164 | *****************************************************************************/ | |
165 | ||
166 | acpi_status | |
167 | acpi_ns_complex_repairs(struct acpi_predefined_data *data, | |
168 | struct acpi_namespace_node *node, | |
169 | acpi_status validate_status, | |
170 | union acpi_operand_object **return_object_ptr) | |
171 | { | |
172 | const struct acpi_repair_info *predefined; | |
173 | acpi_status status; | |
174 | ||
175 | /* Check if this name is in the list of repairable names */ | |
176 | ||
177 | predefined = acpi_ns_match_repairable_name(node); | |
178 | if (!predefined) { | |
179 | return (validate_status); | |
180 | } | |
181 | ||
182 | status = predefined->repair_function(data, return_object_ptr); | |
183 | return (status); | |
184 | } | |
185 | ||
186 | /****************************************************************************** | |
187 | * | |
188 | * FUNCTION: acpi_ns_match_repairable_name | |
189 | * | |
190 | * PARAMETERS: Node - Namespace node for the method/object | |
191 | * | |
192 | * RETURN: Pointer to entry in repair table. NULL indicates not found. | |
193 | * | |
194 | * DESCRIPTION: Check an object name against the repairable object list. | |
195 | * | |
196 | *****************************************************************************/ | |
197 | ||
198 | static const struct acpi_repair_info *acpi_ns_match_repairable_name(struct | |
199 | acpi_namespace_node | |
200 | *node) | |
201 | { | |
202 | const struct acpi_repair_info *this_name; | |
203 | ||
204 | /* Search info table for a repairable predefined method/object name */ | |
205 | ||
206 | this_name = acpi_ns_repairable_names; | |
207 | while (this_name->repair_function) { | |
208 | if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) { | |
209 | return (this_name); | |
210 | } | |
211 | this_name++; | |
212 | } | |
213 | ||
214 | return (NULL); /* Not found */ | |
215 | } | |
216 | ||
217 | /****************************************************************************** | |
218 | * | |
219 | * FUNCTION: acpi_ns_repair_ALR | |
220 | * | |
221 | * PARAMETERS: Data - Pointer to validation data structure | |
222 | * return_object_ptr - Pointer to the object returned from the | |
223 | * evaluation of a method or object | |
224 | * | |
225 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
226 | * | |
227 | * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list | |
228 | * ascending by the ambient illuminance values. | |
229 | * | |
230 | *****************************************************************************/ | |
231 | ||
232 | static acpi_status | |
233 | acpi_ns_repair_ALR(struct acpi_predefined_data *data, | |
234 | union acpi_operand_object **return_object_ptr) | |
235 | { | |
236 | union acpi_operand_object *return_object = *return_object_ptr; | |
237 | acpi_status status; | |
238 | ||
239 | status = acpi_ns_check_sorted_list(data, return_object, 2, 1, | |
240 | ACPI_SORT_ASCENDING, | |
241 | "AmbientIlluminance"); | |
242 | ||
243 | return (status); | |
244 | } | |
245 | ||
34c39c75 BM |
246 | /****************************************************************************** |
247 | * | |
248 | * FUNCTION: acpi_ns_repair_FDE | |
249 | * | |
250 | * PARAMETERS: Data - Pointer to validation data structure | |
251 | * return_object_ptr - Pointer to the object returned from the | |
252 | * evaluation of a method or object | |
253 | * | |
254 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
255 | * | |
256 | * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return | |
43420bbb BM |
257 | * value is a Buffer of 5 DWORDs. This function repairs a common |
258 | * problem where the return value is a Buffer of BYTEs, not | |
259 | * DWORDs. | |
34c39c75 BM |
260 | * |
261 | *****************************************************************************/ | |
262 | ||
263 | static acpi_status | |
264 | acpi_ns_repair_FDE(struct acpi_predefined_data *data, | |
265 | union acpi_operand_object **return_object_ptr) | |
266 | { | |
267 | union acpi_operand_object *return_object = *return_object_ptr; | |
34c39c75 BM |
268 | union acpi_operand_object *buffer_object; |
269 | u8 *byte_buffer; | |
270 | u32 *dword_buffer; | |
34c39c75 BM |
271 | u32 i; |
272 | ||
3a58176e BM |
273 | ACPI_FUNCTION_NAME(ns_repair_FDE); |
274 | ||
34c39c75 BM |
275 | switch (return_object->common.type) { |
276 | case ACPI_TYPE_BUFFER: | |
277 | ||
278 | /* This is the expected type. Length should be (at least) 5 DWORDs */ | |
279 | ||
280 | if (return_object->buffer.length >= ACPI_FDE_DWORD_BUFFER_SIZE) { | |
281 | return (AE_OK); | |
282 | } | |
283 | ||
284 | /* We can only repair if we have exactly 5 BYTEs */ | |
285 | ||
286 | if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) { | |
287 | ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, | |
288 | data->node_flags, | |
289 | "Incorrect return buffer length %u, expected %u", | |
290 | return_object->buffer.length, | |
291 | ACPI_FDE_DWORD_BUFFER_SIZE)); | |
292 | ||
293 | return (AE_AML_OPERAND_TYPE); | |
294 | } | |
295 | ||
296 | /* Create the new (larger) buffer object */ | |
297 | ||
298 | buffer_object = | |
299 | acpi_ut_create_buffer_object(ACPI_FDE_DWORD_BUFFER_SIZE); | |
300 | if (!buffer_object) { | |
301 | return (AE_NO_MEMORY); | |
302 | } | |
303 | ||
304 | /* Expand each byte to a DWORD */ | |
305 | ||
306 | byte_buffer = return_object->buffer.pointer; | |
307 | dword_buffer = | |
308 | ACPI_CAST_PTR(u32, buffer_object->buffer.pointer); | |
309 | ||
310 | for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) { | |
311 | *dword_buffer = (u32) *byte_buffer; | |
312 | dword_buffer++; | |
313 | byte_buffer++; | |
314 | } | |
315 | ||
3a58176e BM |
316 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
317 | "%s Expanded Byte Buffer to expected DWord Buffer\n", | |
318 | data->pathname)); | |
34c39c75 BM |
319 | break; |
320 | ||
34c39c75 BM |
321 | default: |
322 | return (AE_AML_OPERAND_TYPE); | |
323 | } | |
324 | ||
325 | /* Delete the original return object, return the new buffer object */ | |
326 | ||
327 | acpi_ut_remove_reference(return_object); | |
328 | *return_object_ptr = buffer_object; | |
329 | ||
330 | data->flags |= ACPI_OBJECT_REPAIRED; | |
331 | return (AE_OK); | |
77b23f71 BM |
332 | } |
333 | ||
334 | /****************************************************************************** | |
335 | * | |
336 | * FUNCTION: acpi_ns_repair_CID | |
337 | * | |
338 | * PARAMETERS: Data - Pointer to validation data structure | |
339 | * return_object_ptr - Pointer to the object returned from the | |
340 | * evaluation of a method or object | |
341 | * | |
342 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
343 | * | |
344 | * DESCRIPTION: Repair for the _CID object. If a string, ensure that all | |
345 | * letters are uppercase and that there is no leading asterisk. | |
346 | * If a Package, ensure same for all string elements. | |
347 | * | |
348 | *****************************************************************************/ | |
349 | ||
350 | static acpi_status | |
351 | acpi_ns_repair_CID(struct acpi_predefined_data *data, | |
352 | union acpi_operand_object **return_object_ptr) | |
353 | { | |
354 | acpi_status status; | |
355 | union acpi_operand_object *return_object = *return_object_ptr; | |
356 | union acpi_operand_object **element_ptr; | |
357 | union acpi_operand_object *original_element; | |
358 | u16 original_ref_count; | |
359 | u32 i; | |
360 | ||
361 | /* Check for _CID as a simple string */ | |
362 | ||
363 | if (return_object->common.type == ACPI_TYPE_STRING) { | |
364 | status = acpi_ns_repair_HID(data, return_object_ptr); | |
365 | return (status); | |
366 | } | |
367 | ||
368 | /* Exit if not a Package */ | |
369 | ||
370 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
371 | return (AE_OK); | |
372 | } | |
373 | ||
374 | /* Examine each element of the _CID package */ | |
375 | ||
376 | element_ptr = return_object->package.elements; | |
377 | for (i = 0; i < return_object->package.count; i++) { | |
378 | original_element = *element_ptr; | |
379 | original_ref_count = original_element->common.reference_count; | |
380 | ||
381 | status = acpi_ns_repair_HID(data, element_ptr); | |
382 | if (ACPI_FAILURE(status)) { | |
383 | return (status); | |
384 | } | |
385 | ||
386 | /* Take care with reference counts */ | |
387 | ||
388 | if (original_element != *element_ptr) { | |
389 | ||
390 | /* Element was replaced */ | |
391 | ||
392 | (*element_ptr)->common.reference_count = | |
393 | original_ref_count; | |
394 | ||
395 | acpi_ut_remove_reference(original_element); | |
396 | } | |
397 | ||
398 | element_ptr++; | |
399 | } | |
400 | ||
401 | return (AE_OK); | |
402 | } | |
403 | ||
404 | /****************************************************************************** | |
405 | * | |
406 | * FUNCTION: acpi_ns_repair_HID | |
407 | * | |
408 | * PARAMETERS: Data - Pointer to validation data structure | |
409 | * return_object_ptr - Pointer to the object returned from the | |
410 | * evaluation of a method or object | |
411 | * | |
412 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
413 | * | |
414 | * DESCRIPTION: Repair for the _HID object. If a string, ensure that all | |
415 | * letters are uppercase and that there is no leading asterisk. | |
416 | * | |
417 | *****************************************************************************/ | |
418 | ||
419 | static acpi_status | |
420 | acpi_ns_repair_HID(struct acpi_predefined_data *data, | |
421 | union acpi_operand_object **return_object_ptr) | |
422 | { | |
423 | union acpi_operand_object *return_object = *return_object_ptr; | |
424 | union acpi_operand_object *new_string; | |
425 | char *source; | |
426 | char *dest; | |
427 | ||
428 | ACPI_FUNCTION_NAME(ns_repair_HID); | |
429 | ||
430 | /* We only care about string _HID objects (not integers) */ | |
431 | ||
432 | if (return_object->common.type != ACPI_TYPE_STRING) { | |
433 | return (AE_OK); | |
434 | } | |
435 | ||
436 | if (return_object->string.length == 0) { | |
437 | ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags, | |
438 | "Invalid zero-length _HID or _CID string")); | |
439 | ||
440 | /* Return AE_OK anyway, let driver handle it */ | |
441 | ||
442 | data->flags |= ACPI_OBJECT_REPAIRED; | |
443 | return (AE_OK); | |
444 | } | |
445 | ||
446 | /* It is simplest to always create a new string object */ | |
447 | ||
448 | new_string = acpi_ut_create_string_object(return_object->string.length); | |
449 | if (!new_string) { | |
450 | return (AE_NO_MEMORY); | |
451 | } | |
452 | ||
453 | /* | |
454 | * Remove a leading asterisk if present. For some unknown reason, there | |
455 | * are many machines in the field that contains IDs like this. | |
456 | * | |
457 | * Examples: "*PNP0C03", "*ACPI0003" | |
458 | */ | |
459 | source = return_object->string.pointer; | |
460 | if (*source == '*') { | |
461 | source++; | |
462 | new_string->string.length--; | |
463 | ||
464 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, | |
465 | "%s: Removed invalid leading asterisk\n", | |
466 | data->pathname)); | |
467 | } | |
468 | ||
469 | /* | |
7fce7a4b | 470 | * Copy and uppercase the string. From the ACPI 5.0 specification: |
77b23f71 BM |
471 | * |
472 | * A valid PNP ID must be of the form "AAA####" where A is an uppercase | |
473 | * letter and # is a hex digit. A valid ACPI ID must be of the form | |
7fce7a4b BM |
474 | * "NNNN####" where N is an uppercase letter or decimal digit, and |
475 | * # is a hex digit. | |
77b23f71 BM |
476 | */ |
477 | for (dest = new_string->string.pointer; *source; dest++, source++) { | |
478 | *dest = (char)ACPI_TOUPPER(*source); | |
479 | } | |
480 | ||
481 | acpi_ut_remove_reference(return_object); | |
482 | *return_object_ptr = new_string; | |
483 | return (AE_OK); | |
34c39c75 BM |
484 | } |
485 | ||
ad5babee BM |
486 | /****************************************************************************** |
487 | * | |
488 | * FUNCTION: acpi_ns_repair_TSS | |
489 | * | |
490 | * PARAMETERS: Data - Pointer to validation data structure | |
491 | * return_object_ptr - Pointer to the object returned from the | |
492 | * evaluation of a method or object | |
493 | * | |
494 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
495 | * | |
496 | * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list | |
497 | * descending by the power dissipation values. | |
498 | * | |
499 | *****************************************************************************/ | |
500 | ||
501 | static acpi_status | |
502 | acpi_ns_repair_TSS(struct acpi_predefined_data *data, | |
503 | union acpi_operand_object **return_object_ptr) | |
504 | { | |
505 | union acpi_operand_object *return_object = *return_object_ptr; | |
506 | acpi_status status; | |
8f9c9127 FY |
507 | struct acpi_namespace_node *node; |
508 | ||
509 | /* | |
510 | * We can only sort the _TSS return package if there is no _PSS in the | |
511 | * same scope. This is because if _PSS is present, the ACPI specification | |
512 | * dictates that the _TSS Power Dissipation field is to be ignored, and | |
513 | * therefore some BIOSs leave garbage values in the _TSS Power field(s). | |
514 | * In this case, it is best to just return the _TSS package as-is. | |
515 | * (May, 2011) | |
516 | */ | |
517 | status = | |
518 | acpi_ns_get_node(data->node, "^_PSS", ACPI_NS_NO_UPSEARCH, &node); | |
519 | if (ACPI_SUCCESS(status)) { | |
520 | return (AE_OK); | |
521 | } | |
ad5babee BM |
522 | |
523 | status = acpi_ns_check_sorted_list(data, return_object, 5, 1, | |
524 | ACPI_SORT_DESCENDING, | |
525 | "PowerDissipation"); | |
526 | ||
527 | return (status); | |
528 | } | |
529 | ||
530 | /****************************************************************************** | |
531 | * | |
532 | * FUNCTION: acpi_ns_repair_PSS | |
533 | * | |
534 | * PARAMETERS: Data - Pointer to validation data structure | |
535 | * return_object_ptr - Pointer to the object returned from the | |
536 | * evaluation of a method or object | |
537 | * | |
538 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
539 | * | |
540 | * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list | |
541 | * by the CPU frequencies. Check that the power dissipation values | |
542 | * are all proportional to CPU frequency (i.e., sorting by | |
543 | * frequency should be the same as sorting by power.) | |
544 | * | |
545 | *****************************************************************************/ | |
546 | ||
547 | static acpi_status | |
548 | acpi_ns_repair_PSS(struct acpi_predefined_data *data, | |
549 | union acpi_operand_object **return_object_ptr) | |
550 | { | |
551 | union acpi_operand_object *return_object = *return_object_ptr; | |
552 | union acpi_operand_object **outer_elements; | |
553 | u32 outer_element_count; | |
554 | union acpi_operand_object **elements; | |
555 | union acpi_operand_object *obj_desc; | |
556 | u32 previous_value; | |
557 | acpi_status status; | |
558 | u32 i; | |
559 | ||
560 | /* | |
561 | * Entries (sub-packages) in the _PSS Package must be sorted by power | |
562 | * dissipation, in descending order. If it appears that the list is | |
563 | * incorrectly sorted, sort it. We sort by cpu_frequency, since this | |
564 | * should be proportional to the power. | |
565 | */ | |
566 | status = acpi_ns_check_sorted_list(data, return_object, 6, 0, | |
567 | ACPI_SORT_DESCENDING, | |
568 | "CpuFrequency"); | |
569 | if (ACPI_FAILURE(status)) { | |
570 | return (status); | |
571 | } | |
572 | ||
573 | /* | |
574 | * We now know the list is correctly sorted by CPU frequency. Check if | |
575 | * the power dissipation values are proportional. | |
576 | */ | |
577 | previous_value = ACPI_UINT32_MAX; | |
578 | outer_elements = return_object->package.elements; | |
579 | outer_element_count = return_object->package.count; | |
580 | ||
581 | for (i = 0; i < outer_element_count; i++) { | |
582 | elements = (*outer_elements)->package.elements; | |
583 | obj_desc = elements[1]; /* Index1 = power_dissipation */ | |
584 | ||
585 | if ((u32) obj_desc->integer.value > previous_value) { | |
586 | ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, | |
587 | data->node_flags, | |
588 | "SubPackage[%u,%u] - suspicious power dissipation values", | |
589 | i - 1, i)); | |
590 | } | |
591 | ||
592 | previous_value = (u32) obj_desc->integer.value; | |
593 | outer_elements++; | |
594 | } | |
595 | ||
596 | return (AE_OK); | |
597 | } | |
598 | ||
599 | /****************************************************************************** | |
600 | * | |
601 | * FUNCTION: acpi_ns_check_sorted_list | |
602 | * | |
603 | * PARAMETERS: Data - Pointer to validation data structure | |
604 | * return_object - Pointer to the top-level returned object | |
605 | * expected_count - Minimum length of each sub-package | |
606 | * sort_index - Sub-package entry to sort on | |
607 | * sort_direction - Ascending or descending | |
608 | * sort_key_name - Name of the sort_index field | |
609 | * | |
610 | * RETURN: Status. AE_OK if the list is valid and is sorted correctly or | |
611 | * has been repaired by sorting the list. | |
612 | * | |
613 | * DESCRIPTION: Check if the package list is valid and sorted correctly by the | |
614 | * sort_index. If not, then sort the list. | |
615 | * | |
616 | *****************************************************************************/ | |
617 | ||
618 | static acpi_status | |
619 | acpi_ns_check_sorted_list(struct acpi_predefined_data *data, | |
620 | union acpi_operand_object *return_object, | |
621 | u32 expected_count, | |
622 | u32 sort_index, | |
623 | u8 sort_direction, char *sort_key_name) | |
624 | { | |
625 | u32 outer_element_count; | |
626 | union acpi_operand_object **outer_elements; | |
627 | union acpi_operand_object **elements; | |
628 | union acpi_operand_object *obj_desc; | |
629 | u32 i; | |
630 | u32 previous_value; | |
ad5babee | 631 | |
3a58176e BM |
632 | ACPI_FUNCTION_NAME(ns_check_sorted_list); |
633 | ||
ad5babee BM |
634 | /* The top-level object must be a package */ |
635 | ||
636 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
637 | return (AE_AML_OPERAND_TYPE); | |
638 | } | |
639 | ||
640 | /* | |
d4085a3f BM |
641 | * NOTE: assumes list of sub-packages contains no NULL elements. |
642 | * Any NULL elements should have been removed by earlier call | |
643 | * to acpi_ns_remove_null_elements. | |
ad5babee | 644 | */ |
ad5babee BM |
645 | outer_elements = return_object->package.elements; |
646 | outer_element_count = return_object->package.count; | |
647 | if (!outer_element_count) { | |
648 | return (AE_AML_PACKAGE_LIMIT); | |
649 | } | |
650 | ||
651 | previous_value = 0; | |
652 | if (sort_direction == ACPI_SORT_DESCENDING) { | |
653 | previous_value = ACPI_UINT32_MAX; | |
654 | } | |
655 | ||
656 | /* Examine each subpackage */ | |
657 | ||
658 | for (i = 0; i < outer_element_count; i++) { | |
659 | ||
660 | /* Each element of the top-level package must also be a package */ | |
661 | ||
662 | if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) { | |
663 | return (AE_AML_OPERAND_TYPE); | |
664 | } | |
665 | ||
666 | /* Each sub-package must have the minimum length */ | |
667 | ||
668 | if ((*outer_elements)->package.count < expected_count) { | |
669 | return (AE_AML_PACKAGE_LIMIT); | |
670 | } | |
671 | ||
672 | elements = (*outer_elements)->package.elements; | |
673 | obj_desc = elements[sort_index]; | |
674 | ||
675 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { | |
676 | return (AE_AML_OPERAND_TYPE); | |
677 | } | |
678 | ||
679 | /* | |
680 | * The list must be sorted in the specified order. If we detect a | |
2147d3f0 | 681 | * discrepancy, sort the entire list. |
ad5babee BM |
682 | */ |
683 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
684 | (obj_desc->integer.value < previous_value)) || | |
685 | ((sort_direction == ACPI_SORT_DESCENDING) && | |
686 | (obj_desc->integer.value > previous_value))) { | |
2147d3f0 BM |
687 | acpi_ns_sort_list(return_object->package.elements, |
688 | outer_element_count, sort_index, | |
689 | sort_direction); | |
ad5babee BM |
690 | |
691 | data->flags |= ACPI_OBJECT_REPAIRED; | |
692 | ||
3a58176e BM |
693 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
694 | "%s: Repaired unsorted list - now sorted by %s\n", | |
695 | data->pathname, sort_key_name)); | |
ad5babee BM |
696 | return (AE_OK); |
697 | } | |
698 | ||
699 | previous_value = (u32) obj_desc->integer.value; | |
700 | outer_elements++; | |
701 | } | |
702 | ||
703 | return (AE_OK); | |
704 | } | |
705 | ||
ad5babee BM |
706 | /****************************************************************************** |
707 | * | |
708 | * FUNCTION: acpi_ns_sort_list | |
709 | * | |
710 | * PARAMETERS: Elements - Package object element list | |
711 | * Count - Element count for above | |
712 | * Index - Sort by which package element | |
713 | * sort_direction - Ascending or Descending sort | |
714 | * | |
2147d3f0 | 715 | * RETURN: None |
ad5babee BM |
716 | * |
717 | * DESCRIPTION: Sort the objects that are in a package element list. | |
718 | * | |
2147d3f0 BM |
719 | * NOTE: Assumes that all NULL elements have been removed from the package, |
720 | * and that all elements have been verified to be of type Integer. | |
ad5babee BM |
721 | * |
722 | *****************************************************************************/ | |
723 | ||
2147d3f0 | 724 | static void |
ad5babee BM |
725 | acpi_ns_sort_list(union acpi_operand_object **elements, |
726 | u32 count, u32 index, u8 sort_direction) | |
727 | { | |
728 | union acpi_operand_object *obj_desc1; | |
729 | union acpi_operand_object *obj_desc2; | |
730 | union acpi_operand_object *temp_obj; | |
731 | u32 i; | |
732 | u32 j; | |
733 | ||
734 | /* Simple bubble sort */ | |
735 | ||
736 | for (i = 1; i < count; i++) { | |
737 | for (j = (count - 1); j >= i; j--) { | |
738 | obj_desc1 = elements[j - 1]->package.elements[index]; | |
739 | obj_desc2 = elements[j]->package.elements[index]; | |
740 | ||
741 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
742 | (obj_desc1->integer.value > | |
743 | obj_desc2->integer.value)) | |
744 | || ((sort_direction == ACPI_SORT_DESCENDING) | |
745 | && (obj_desc1->integer.value < | |
746 | obj_desc2->integer.value))) { | |
747 | temp_obj = elements[j - 1]; | |
748 | elements[j - 1] = elements[j]; | |
749 | elements[j] = temp_obj; | |
750 | } | |
751 | } | |
752 | } | |
ad5babee | 753 | } |