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95857638 | 1 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
ad5babee BM |
2 | /****************************************************************************** |
3 | * | |
4 | * Module Name: nsrepair2 - Repair for objects returned by specific | |
5 | * predefined methods | |
6 | * | |
800ba7c5 | 7 | * Copyright (C) 2000 - 2020, Intel Corp. |
ad5babee | 8 | * |
95857638 | 9 | *****************************************************************************/ |
ad5babee BM |
10 | |
11 | #include <acpi/acpi.h> | |
12 | #include "accommon.h" | |
13 | #include "acnamesp.h" | |
14 | ||
15 | #define _COMPONENT ACPI_NAMESPACE | |
16 | ACPI_MODULE_NAME("nsrepair2") | |
17 | ||
18 | /* | |
19 | * Information structure and handler for ACPI predefined names that can | |
20 | * be repaired on a per-name basis. | |
21 | */ | |
22 | typedef | |
f5c1e1c5 LZ |
23 | acpi_status (*acpi_repair_function) (struct acpi_evaluate_info * info, |
24 | union acpi_operand_object ** | |
25 | return_object_ptr); | |
ad5babee BM |
26 | |
27 | typedef struct acpi_repair_info { | |
32786755 | 28 | char name[ACPI_NAMESEG_SIZE]; |
ad5babee BM |
29 | acpi_repair_function repair_function; |
30 | ||
31 | } acpi_repair_info; | |
32 | ||
33 | /* Local prototypes */ | |
34 | ||
d5a36100 BM |
35 | static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct |
36 | acpi_namespace_node | |
37 | *node); | |
ad5babee BM |
38 | |
39 | static acpi_status | |
29a241cc | 40 | acpi_ns_repair_ALR(struct acpi_evaluate_info *info, |
ad5babee BM |
41 | union acpi_operand_object **return_object_ptr); |
42 | ||
77b23f71 | 43 | static acpi_status |
29a241cc | 44 | acpi_ns_repair_CID(struct acpi_evaluate_info *info, |
77b23f71 BM |
45 | union acpi_operand_object **return_object_ptr); |
46 | ||
5a9792f3 LZ |
47 | static acpi_status |
48 | acpi_ns_repair_CST(struct acpi_evaluate_info *info, | |
49 | union acpi_operand_object **return_object_ptr); | |
50 | ||
34c39c75 | 51 | static acpi_status |
29a241cc | 52 | acpi_ns_repair_FDE(struct acpi_evaluate_info *info, |
34c39c75 BM |
53 | union acpi_operand_object **return_object_ptr); |
54 | ||
77b23f71 | 55 | static acpi_status |
29a241cc | 56 | acpi_ns_repair_HID(struct acpi_evaluate_info *info, |
77b23f71 BM |
57 | union acpi_operand_object **return_object_ptr); |
58 | ||
aa6329c4 LZ |
59 | static acpi_status |
60 | acpi_ns_repair_PRT(struct acpi_evaluate_info *info, | |
61 | union acpi_operand_object **return_object_ptr); | |
62 | ||
ad5babee | 63 | static acpi_status |
29a241cc | 64 | acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
ad5babee BM |
65 | union acpi_operand_object **return_object_ptr); |
66 | ||
67 | static acpi_status | |
29a241cc | 68 | acpi_ns_repair_TSS(struct acpi_evaluate_info *info, |
ad5babee BM |
69 | union acpi_operand_object **return_object_ptr); |
70 | ||
71 | static acpi_status | |
29a241cc | 72 | acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
ad5babee | 73 | union acpi_operand_object *return_object, |
5a9792f3 | 74 | u32 start_index, |
ad5babee BM |
75 | u32 expected_count, |
76 | u32 sort_index, | |
77 | u8 sort_direction, char *sort_key_name); | |
78 | ||
ad5babee BM |
79 | /* Values for sort_direction above */ |
80 | ||
81 | #define ACPI_SORT_ASCENDING 0 | |
82 | #define ACPI_SORT_DESCENDING 1 | |
83 | ||
5a9792f3 LZ |
84 | static void |
85 | acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index); | |
86 | ||
87 | static void | |
88 | acpi_ns_sort_list(union acpi_operand_object **elements, | |
89 | u32 count, u32 index, u8 sort_direction); | |
90 | ||
ad5babee BM |
91 | /* |
92 | * This table contains the names of the predefined methods for which we can | |
93 | * perform more complex repairs. | |
94 | * | |
34c39c75 BM |
95 | * As necessary: |
96 | * | |
97 | * _ALR: Sort the list ascending by ambient_illuminance | |
77b23f71 | 98 | * _CID: Strings: uppercase all, remove any leading asterisk |
5a9792f3 | 99 | * _CST: Sort the list ascending by C state type |
43420bbb BM |
100 | * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs |
101 | * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs | |
77b23f71 | 102 | * _HID: Strings: uppercase all, remove any leading asterisk |
aa6329c4 | 103 | * _PRT: Fix reversed source_name and source_index |
34c39c75 BM |
104 | * _PSS: Sort the list descending by Power |
105 | * _TSS: Sort the list descending by Power | |
aa9d3606 BM |
106 | * |
107 | * Names that must be packages, but cannot be sorted: | |
108 | * | |
109 | * _BCL: Values are tied to the Package index where they appear, and cannot | |
110 | * be moved or sorted. These index values are used for _BQC and _BCM. | |
111 | * However, we can fix the case where a buffer is returned, by converting | |
112 | * it to a Package of integers. | |
ad5babee BM |
113 | */ |
114 | static const struct acpi_repair_info acpi_ns_repairable_names[] = { | |
115 | {"_ALR", acpi_ns_repair_ALR}, | |
77b23f71 | 116 | {"_CID", acpi_ns_repair_CID}, |
5a9792f3 | 117 | {"_CST", acpi_ns_repair_CST}, |
34c39c75 BM |
118 | {"_FDE", acpi_ns_repair_FDE}, |
119 | {"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */ | |
77b23f71 | 120 | {"_HID", acpi_ns_repair_HID}, |
aa6329c4 | 121 | {"_PRT", acpi_ns_repair_PRT}, |
ad5babee BM |
122 | {"_PSS", acpi_ns_repair_PSS}, |
123 | {"_TSS", acpi_ns_repair_TSS}, | |
124 | {{0, 0, 0, 0}, NULL} /* Table terminator */ | |
125 | }; | |
126 | ||
34c39c75 BM |
127 | #define ACPI_FDE_FIELD_COUNT 5 |
128 | #define ACPI_FDE_BYTE_BUFFER_SIZE 5 | |
231ec06e | 129 | #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * (u32) sizeof (u32)) |
34c39c75 | 130 | |
ad5babee BM |
131 | /****************************************************************************** |
132 | * | |
133 | * FUNCTION: acpi_ns_complex_repairs | |
134 | * | |
29a241cc | 135 | * PARAMETERS: info - Method execution information block |
ba494bee | 136 | * node - Namespace node for the method/object |
ad5babee BM |
137 | * validate_status - Original status of earlier validation |
138 | * return_object_ptr - Pointer to the object returned from the | |
139 | * evaluation of a method or object | |
140 | * | |
141 | * RETURN: Status. AE_OK if repair was successful. If name is not | |
142 | * matched, validate_status is returned. | |
143 | * | |
144 | * DESCRIPTION: Attempt to repair/convert a return object of a type that was | |
145 | * not expected. | |
146 | * | |
147 | *****************************************************************************/ | |
148 | ||
149 | acpi_status | |
29a241cc | 150 | acpi_ns_complex_repairs(struct acpi_evaluate_info *info, |
ad5babee BM |
151 | struct acpi_namespace_node *node, |
152 | acpi_status validate_status, | |
153 | union acpi_operand_object **return_object_ptr) | |
154 | { | |
155 | const struct acpi_repair_info *predefined; | |
156 | acpi_status status; | |
157 | ||
158 | /* Check if this name is in the list of repairable names */ | |
159 | ||
d5a36100 | 160 | predefined = acpi_ns_match_complex_repair(node); |
ad5babee BM |
161 | if (!predefined) { |
162 | return (validate_status); | |
163 | } | |
164 | ||
29a241cc | 165 | status = predefined->repair_function(info, return_object_ptr); |
ad5babee BM |
166 | return (status); |
167 | } | |
168 | ||
169 | /****************************************************************************** | |
170 | * | |
d5a36100 | 171 | * FUNCTION: acpi_ns_match_complex_repair |
ad5babee | 172 | * |
ba494bee | 173 | * PARAMETERS: node - Namespace node for the method/object |
ad5babee BM |
174 | * |
175 | * RETURN: Pointer to entry in repair table. NULL indicates not found. | |
176 | * | |
177 | * DESCRIPTION: Check an object name against the repairable object list. | |
178 | * | |
179 | *****************************************************************************/ | |
180 | ||
d5a36100 BM |
181 | static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct |
182 | acpi_namespace_node | |
183 | *node) | |
ad5babee BM |
184 | { |
185 | const struct acpi_repair_info *this_name; | |
186 | ||
187 | /* Search info table for a repairable predefined method/object name */ | |
188 | ||
189 | this_name = acpi_ns_repairable_names; | |
190 | while (this_name->repair_function) { | |
5599fb69 | 191 | if (ACPI_COMPARE_NAMESEG(node->name.ascii, this_name->name)) { |
ad5babee BM |
192 | return (this_name); |
193 | } | |
1fad8738 | 194 | |
ad5babee BM |
195 | this_name++; |
196 | } | |
197 | ||
198 | return (NULL); /* Not found */ | |
199 | } | |
200 | ||
201 | /****************************************************************************** | |
202 | * | |
203 | * FUNCTION: acpi_ns_repair_ALR | |
204 | * | |
29a241cc | 205 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
206 | * return_object_ptr - Pointer to the object returned from the |
207 | * evaluation of a method or object | |
208 | * | |
209 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
210 | * | |
211 | * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list | |
212 | * ascending by the ambient illuminance values. | |
213 | * | |
214 | *****************************************************************************/ | |
215 | ||
216 | static acpi_status | |
29a241cc | 217 | acpi_ns_repair_ALR(struct acpi_evaluate_info *info, |
ad5babee BM |
218 | union acpi_operand_object **return_object_ptr) |
219 | { | |
220 | union acpi_operand_object *return_object = *return_object_ptr; | |
221 | acpi_status status; | |
222 | ||
5a9792f3 | 223 | status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1, |
ad5babee BM |
224 | ACPI_SORT_ASCENDING, |
225 | "AmbientIlluminance"); | |
226 | ||
227 | return (status); | |
228 | } | |
229 | ||
34c39c75 BM |
230 | /****************************************************************************** |
231 | * | |
232 | * FUNCTION: acpi_ns_repair_FDE | |
233 | * | |
29a241cc | 234 | * PARAMETERS: info - Method execution information block |
34c39c75 BM |
235 | * return_object_ptr - Pointer to the object returned from the |
236 | * evaluation of a method or object | |
237 | * | |
238 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
239 | * | |
240 | * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return | |
43420bbb BM |
241 | * value is a Buffer of 5 DWORDs. This function repairs a common |
242 | * problem where the return value is a Buffer of BYTEs, not | |
243 | * DWORDs. | |
34c39c75 BM |
244 | * |
245 | *****************************************************************************/ | |
246 | ||
247 | static acpi_status | |
29a241cc | 248 | acpi_ns_repair_FDE(struct acpi_evaluate_info *info, |
34c39c75 BM |
249 | union acpi_operand_object **return_object_ptr) |
250 | { | |
251 | union acpi_operand_object *return_object = *return_object_ptr; | |
34c39c75 BM |
252 | union acpi_operand_object *buffer_object; |
253 | u8 *byte_buffer; | |
254 | u32 *dword_buffer; | |
34c39c75 BM |
255 | u32 i; |
256 | ||
3a58176e BM |
257 | ACPI_FUNCTION_NAME(ns_repair_FDE); |
258 | ||
34c39c75 BM |
259 | switch (return_object->common.type) { |
260 | case ACPI_TYPE_BUFFER: | |
261 | ||
262 | /* This is the expected type. Length should be (at least) 5 DWORDs */ | |
263 | ||
264 | if (return_object->buffer.length >= ACPI_FDE_DWORD_BUFFER_SIZE) { | |
265 | return (AE_OK); | |
266 | } | |
267 | ||
268 | /* We can only repair if we have exactly 5 BYTEs */ | |
269 | ||
270 | if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) { | |
1fad8738 BM |
271 | ACPI_WARN_PREDEFINED((AE_INFO, |
272 | info->full_pathname, | |
29a241cc | 273 | info->node_flags, |
34c39c75 BM |
274 | "Incorrect return buffer length %u, expected %u", |
275 | return_object->buffer.length, | |
276 | ACPI_FDE_DWORD_BUFFER_SIZE)); | |
277 | ||
278 | return (AE_AML_OPERAND_TYPE); | |
279 | } | |
280 | ||
281 | /* Create the new (larger) buffer object */ | |
282 | ||
283 | buffer_object = | |
284 | acpi_ut_create_buffer_object(ACPI_FDE_DWORD_BUFFER_SIZE); | |
285 | if (!buffer_object) { | |
286 | return (AE_NO_MEMORY); | |
287 | } | |
288 | ||
289 | /* Expand each byte to a DWORD */ | |
290 | ||
291 | byte_buffer = return_object->buffer.pointer; | |
1fad8738 BM |
292 | dword_buffer = ACPI_CAST_PTR(u32, |
293 | buffer_object->buffer.pointer); | |
34c39c75 BM |
294 | |
295 | for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) { | |
296 | *dword_buffer = (u32) *byte_buffer; | |
297 | dword_buffer++; | |
298 | byte_buffer++; | |
299 | } | |
300 | ||
3a58176e BM |
301 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
302 | "%s Expanded Byte Buffer to expected DWord Buffer\n", | |
29a241cc | 303 | info->full_pathname)); |
34c39c75 BM |
304 | break; |
305 | ||
34c39c75 | 306 | default: |
1d1ea1b7 | 307 | |
34c39c75 BM |
308 | return (AE_AML_OPERAND_TYPE); |
309 | } | |
310 | ||
311 | /* Delete the original return object, return the new buffer object */ | |
312 | ||
313 | acpi_ut_remove_reference(return_object); | |
314 | *return_object_ptr = buffer_object; | |
315 | ||
29a241cc | 316 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
34c39c75 | 317 | return (AE_OK); |
77b23f71 BM |
318 | } |
319 | ||
320 | /****************************************************************************** | |
321 | * | |
322 | * FUNCTION: acpi_ns_repair_CID | |
323 | * | |
29a241cc | 324 | * PARAMETERS: info - Method execution information block |
77b23f71 BM |
325 | * return_object_ptr - Pointer to the object returned from the |
326 | * evaluation of a method or object | |
327 | * | |
328 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
329 | * | |
330 | * DESCRIPTION: Repair for the _CID object. If a string, ensure that all | |
331 | * letters are uppercase and that there is no leading asterisk. | |
332 | * If a Package, ensure same for all string elements. | |
333 | * | |
334 | *****************************************************************************/ | |
335 | ||
336 | static acpi_status | |
29a241cc | 337 | acpi_ns_repair_CID(struct acpi_evaluate_info *info, |
77b23f71 BM |
338 | union acpi_operand_object **return_object_ptr) |
339 | { | |
340 | acpi_status status; | |
341 | union acpi_operand_object *return_object = *return_object_ptr; | |
342 | union acpi_operand_object **element_ptr; | |
343 | union acpi_operand_object *original_element; | |
344 | u16 original_ref_count; | |
345 | u32 i; | |
346 | ||
347 | /* Check for _CID as a simple string */ | |
348 | ||
349 | if (return_object->common.type == ACPI_TYPE_STRING) { | |
29a241cc | 350 | status = acpi_ns_repair_HID(info, return_object_ptr); |
77b23f71 BM |
351 | return (status); |
352 | } | |
353 | ||
354 | /* Exit if not a Package */ | |
355 | ||
356 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
357 | return (AE_OK); | |
358 | } | |
359 | ||
360 | /* Examine each element of the _CID package */ | |
361 | ||
362 | element_ptr = return_object->package.elements; | |
363 | for (i = 0; i < return_object->package.count; i++) { | |
364 | original_element = *element_ptr; | |
365 | original_ref_count = original_element->common.reference_count; | |
366 | ||
29a241cc | 367 | status = acpi_ns_repair_HID(info, element_ptr); |
77b23f71 BM |
368 | if (ACPI_FAILURE(status)) { |
369 | return (status); | |
370 | } | |
371 | ||
77b23f71 BM |
372 | if (original_element != *element_ptr) { |
373 | ||
ed7f8bc9 | 374 | /* Update reference count of new object */ |
77b23f71 BM |
375 | |
376 | (*element_ptr)->common.reference_count = | |
377 | original_ref_count; | |
77b23f71 BM |
378 | } |
379 | ||
380 | element_ptr++; | |
381 | } | |
382 | ||
383 | return (AE_OK); | |
384 | } | |
385 | ||
5a9792f3 LZ |
386 | /****************************************************************************** |
387 | * | |
388 | * FUNCTION: acpi_ns_repair_CST | |
389 | * | |
390 | * PARAMETERS: info - Method execution information block | |
391 | * return_object_ptr - Pointer to the object returned from the | |
392 | * evaluation of a method or object | |
393 | * | |
394 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
395 | * | |
396 | * DESCRIPTION: Repair for the _CST object: | |
397 | * 1. Sort the list ascending by C state type | |
398 | * 2. Ensure type cannot be zero | |
0a16d12a BM |
399 | * 3. A subpackage count of zero means _CST is meaningless |
400 | * 4. Count must match the number of C state subpackages | |
5a9792f3 LZ |
401 | * |
402 | *****************************************************************************/ | |
403 | ||
404 | static acpi_status | |
405 | acpi_ns_repair_CST(struct acpi_evaluate_info *info, | |
406 | union acpi_operand_object **return_object_ptr) | |
407 | { | |
408 | union acpi_operand_object *return_object = *return_object_ptr; | |
409 | union acpi_operand_object **outer_elements; | |
410 | u32 outer_element_count; | |
411 | union acpi_operand_object *obj_desc; | |
412 | acpi_status status; | |
413 | u8 removing; | |
414 | u32 i; | |
415 | ||
416 | ACPI_FUNCTION_NAME(ns_repair_CST); | |
417 | ||
418 | /* | |
341e7ba1 | 419 | * Check if the C-state type values are proportional. |
5a9792f3 LZ |
420 | */ |
421 | outer_element_count = return_object->package.count - 1; | |
422 | i = 0; | |
423 | while (i < outer_element_count) { | |
424 | outer_elements = &return_object->package.elements[i + 1]; | |
425 | removing = FALSE; | |
426 | ||
427 | if ((*outer_elements)->package.count == 0) { | |
1fad8738 BM |
428 | ACPI_WARN_PREDEFINED((AE_INFO, |
429 | info->full_pathname, | |
5a9792f3 LZ |
430 | info->node_flags, |
431 | "SubPackage[%u] - removing entry due to zero count", | |
432 | i)); | |
433 | removing = TRUE; | |
434 | goto remove_element; | |
435 | } | |
436 | ||
437 | obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */ | |
438 | if ((u32)obj_desc->integer.value == 0) { | |
1fad8738 BM |
439 | ACPI_WARN_PREDEFINED((AE_INFO, |
440 | info->full_pathname, | |
5a9792f3 LZ |
441 | info->node_flags, |
442 | "SubPackage[%u] - removing entry due to invalid Type(0)", | |
443 | i)); | |
444 | removing = TRUE; | |
445 | } | |
446 | ||
10622bf8 | 447 | remove_element: |
5a9792f3 LZ |
448 | if (removing) { |
449 | acpi_ns_remove_element(return_object, i + 1); | |
450 | outer_element_count--; | |
451 | } else { | |
452 | i++; | |
453 | } | |
454 | } | |
455 | ||
456 | /* Update top-level package count, Type "Integer" checked elsewhere */ | |
457 | ||
458 | obj_desc = return_object->package.elements[0]; | |
459 | obj_desc->integer.value = outer_element_count; | |
341e7ba1 LZ |
460 | |
461 | /* | |
462 | * Entries (subpackages) in the _CST Package must be sorted by the | |
463 | * C-state type, in ascending order. | |
464 | */ | |
465 | status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1, | |
466 | ACPI_SORT_ASCENDING, "C-State Type"); | |
467 | if (ACPI_FAILURE(status)) { | |
468 | return (status); | |
469 | } | |
470 | ||
5a9792f3 LZ |
471 | return (AE_OK); |
472 | } | |
473 | ||
77b23f71 BM |
474 | /****************************************************************************** |
475 | * | |
476 | * FUNCTION: acpi_ns_repair_HID | |
477 | * | |
29a241cc | 478 | * PARAMETERS: info - Method execution information block |
77b23f71 BM |
479 | * return_object_ptr - Pointer to the object returned from the |
480 | * evaluation of a method or object | |
481 | * | |
482 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
483 | * | |
484 | * DESCRIPTION: Repair for the _HID object. If a string, ensure that all | |
485 | * letters are uppercase and that there is no leading asterisk. | |
486 | * | |
487 | *****************************************************************************/ | |
488 | ||
489 | static acpi_status | |
29a241cc | 490 | acpi_ns_repair_HID(struct acpi_evaluate_info *info, |
77b23f71 BM |
491 | union acpi_operand_object **return_object_ptr) |
492 | { | |
493 | union acpi_operand_object *return_object = *return_object_ptr; | |
494 | union acpi_operand_object *new_string; | |
495 | char *source; | |
496 | char *dest; | |
497 | ||
498 | ACPI_FUNCTION_NAME(ns_repair_HID); | |
499 | ||
500 | /* We only care about string _HID objects (not integers) */ | |
501 | ||
502 | if (return_object->common.type != ACPI_TYPE_STRING) { | |
503 | return (AE_OK); | |
504 | } | |
505 | ||
506 | if (return_object->string.length == 0) { | |
1fad8738 BM |
507 | ACPI_WARN_PREDEFINED((AE_INFO, |
508 | info->full_pathname, info->node_flags, | |
77b23f71 BM |
509 | "Invalid zero-length _HID or _CID string")); |
510 | ||
511 | /* Return AE_OK anyway, let driver handle it */ | |
512 | ||
29a241cc | 513 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
77b23f71 BM |
514 | return (AE_OK); |
515 | } | |
516 | ||
517 | /* It is simplest to always create a new string object */ | |
518 | ||
519 | new_string = acpi_ut_create_string_object(return_object->string.length); | |
520 | if (!new_string) { | |
521 | return (AE_NO_MEMORY); | |
522 | } | |
523 | ||
524 | /* | |
525 | * Remove a leading asterisk if present. For some unknown reason, there | |
526 | * are many machines in the field that contains IDs like this. | |
527 | * | |
528 | * Examples: "*PNP0C03", "*ACPI0003" | |
529 | */ | |
530 | source = return_object->string.pointer; | |
531 | if (*source == '*') { | |
532 | source++; | |
533 | new_string->string.length--; | |
534 | ||
535 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, | |
536 | "%s: Removed invalid leading asterisk\n", | |
29a241cc | 537 | info->full_pathname)); |
77b23f71 BM |
538 | } |
539 | ||
540 | /* | |
7fce7a4b | 541 | * Copy and uppercase the string. From the ACPI 5.0 specification: |
77b23f71 BM |
542 | * |
543 | * A valid PNP ID must be of the form "AAA####" where A is an uppercase | |
544 | * letter and # is a hex digit. A valid ACPI ID must be of the form | |
7fce7a4b BM |
545 | * "NNNN####" where N is an uppercase letter or decimal digit, and |
546 | * # is a hex digit. | |
77b23f71 BM |
547 | */ |
548 | for (dest = new_string->string.pointer; *source; dest++, source++) { | |
4fa4616e | 549 | *dest = (char)toupper((int)*source); |
77b23f71 BM |
550 | } |
551 | ||
552 | acpi_ut_remove_reference(return_object); | |
553 | *return_object_ptr = new_string; | |
554 | return (AE_OK); | |
34c39c75 BM |
555 | } |
556 | ||
ad5babee BM |
557 | /****************************************************************************** |
558 | * | |
aa6329c4 | 559 | * FUNCTION: acpi_ns_repair_PRT |
ad5babee | 560 | * |
29a241cc | 561 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
562 | * return_object_ptr - Pointer to the object returned from the |
563 | * evaluation of a method or object | |
564 | * | |
565 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
566 | * | |
aa6329c4 LZ |
567 | * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed |
568 | * source_name and source_index field, a common BIOS bug. | |
ad5babee BM |
569 | * |
570 | *****************************************************************************/ | |
571 | ||
572 | static acpi_status | |
aa6329c4 | 573 | acpi_ns_repair_PRT(struct acpi_evaluate_info *info, |
ad5babee BM |
574 | union acpi_operand_object **return_object_ptr) |
575 | { | |
aa6329c4 LZ |
576 | union acpi_operand_object *package_object = *return_object_ptr; |
577 | union acpi_operand_object **top_object_list; | |
578 | union acpi_operand_object **sub_object_list; | |
579 | union acpi_operand_object *obj_desc; | |
1c3c2a54 | 580 | union acpi_operand_object *sub_package; |
aa6329c4 LZ |
581 | u32 element_count; |
582 | u32 index; | |
8f9c9127 | 583 | |
aa6329c4 | 584 | /* Each element in the _PRT package is a subpackage */ |
ad5babee | 585 | |
aa6329c4 LZ |
586 | top_object_list = package_object->package.elements; |
587 | element_count = package_object->package.count; | |
ad5babee | 588 | |
69e6bb68 BM |
589 | /* Examine each subpackage */ |
590 | ||
591 | for (index = 0; index < element_count; index++, top_object_list++) { | |
1c3c2a54 BM |
592 | sub_package = *top_object_list; |
593 | sub_object_list = sub_package->package.elements; | |
594 | ||
69e6bb68 BM |
595 | /* Check for minimum required element count */ |
596 | ||
597 | if (sub_package->package.count < 4) { | |
598 | continue; | |
1c3c2a54 | 599 | } |
aa6329c4 LZ |
600 | |
601 | /* | |
602 | * If the BIOS has erroneously reversed the _PRT source_name (index 2) | |
603 | * and the source_index (index 3), fix it. _PRT is important enough to | |
604 | * workaround this BIOS error. This also provides compatibility with | |
605 | * other ACPI implementations. | |
606 | */ | |
607 | obj_desc = sub_object_list[3]; | |
608 | if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { | |
609 | sub_object_list[3] = sub_object_list[2]; | |
610 | sub_object_list[2] = obj_desc; | |
611 | info->return_flags |= ACPI_OBJECT_REPAIRED; | |
612 | ||
69e6bb68 BM |
613 | ACPI_WARN_PREDEFINED((AE_INFO, |
614 | info->full_pathname, | |
aa6329c4 LZ |
615 | info->node_flags, |
616 | "PRT[%X]: Fixed reversed SourceName and SourceIndex", | |
617 | index)); | |
618 | } | |
aa6329c4 LZ |
619 | } |
620 | ||
621 | return (AE_OK); | |
ad5babee BM |
622 | } |
623 | ||
624 | /****************************************************************************** | |
625 | * | |
626 | * FUNCTION: acpi_ns_repair_PSS | |
627 | * | |
29a241cc | 628 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
629 | * return_object_ptr - Pointer to the object returned from the |
630 | * evaluation of a method or object | |
631 | * | |
632 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
633 | * | |
634 | * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list | |
635 | * by the CPU frequencies. Check that the power dissipation values | |
636 | * are all proportional to CPU frequency (i.e., sorting by | |
637 | * frequency should be the same as sorting by power.) | |
638 | * | |
639 | *****************************************************************************/ | |
640 | ||
641 | static acpi_status | |
29a241cc | 642 | acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
ad5babee BM |
643 | union acpi_operand_object **return_object_ptr) |
644 | { | |
645 | union acpi_operand_object *return_object = *return_object_ptr; | |
646 | union acpi_operand_object **outer_elements; | |
647 | u32 outer_element_count; | |
648 | union acpi_operand_object **elements; | |
649 | union acpi_operand_object *obj_desc; | |
650 | u32 previous_value; | |
651 | acpi_status status; | |
652 | u32 i; | |
653 | ||
654 | /* | |
0a16d12a | 655 | * Entries (subpackages) in the _PSS Package must be sorted by power |
ad5babee BM |
656 | * dissipation, in descending order. If it appears that the list is |
657 | * incorrectly sorted, sort it. We sort by cpu_frequency, since this | |
658 | * should be proportional to the power. | |
659 | */ | |
5a9792f3 | 660 | status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0, |
ad5babee BM |
661 | ACPI_SORT_DESCENDING, |
662 | "CpuFrequency"); | |
663 | if (ACPI_FAILURE(status)) { | |
664 | return (status); | |
665 | } | |
666 | ||
667 | /* | |
668 | * We now know the list is correctly sorted by CPU frequency. Check if | |
669 | * the power dissipation values are proportional. | |
670 | */ | |
671 | previous_value = ACPI_UINT32_MAX; | |
672 | outer_elements = return_object->package.elements; | |
673 | outer_element_count = return_object->package.count; | |
674 | ||
675 | for (i = 0; i < outer_element_count; i++) { | |
676 | elements = (*outer_elements)->package.elements; | |
677 | obj_desc = elements[1]; /* Index1 = power_dissipation */ | |
678 | ||
5431b654 | 679 | if ((u32)obj_desc->integer.value > previous_value) { |
1fad8738 BM |
680 | ACPI_WARN_PREDEFINED((AE_INFO, |
681 | info->full_pathname, | |
29a241cc | 682 | info->node_flags, |
ad5babee BM |
683 | "SubPackage[%u,%u] - suspicious power dissipation values", |
684 | i - 1, i)); | |
685 | } | |
686 | ||
687 | previous_value = (u32) obj_desc->integer.value; | |
688 | outer_elements++; | |
689 | } | |
690 | ||
691 | return (AE_OK); | |
692 | } | |
693 | ||
aa6329c4 LZ |
694 | /****************************************************************************** |
695 | * | |
696 | * FUNCTION: acpi_ns_repair_TSS | |
697 | * | |
698 | * PARAMETERS: info - Method execution information block | |
699 | * return_object_ptr - Pointer to the object returned from the | |
700 | * evaluation of a method or object | |
701 | * | |
702 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
703 | * | |
704 | * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list | |
705 | * descending by the power dissipation values. | |
706 | * | |
707 | *****************************************************************************/ | |
708 | ||
709 | static acpi_status | |
710 | acpi_ns_repair_TSS(struct acpi_evaluate_info *info, | |
711 | union acpi_operand_object **return_object_ptr) | |
712 | { | |
713 | union acpi_operand_object *return_object = *return_object_ptr; | |
714 | acpi_status status; | |
715 | struct acpi_namespace_node *node; | |
716 | ||
717 | /* | |
718 | * We can only sort the _TSS return package if there is no _PSS in the | |
719 | * same scope. This is because if _PSS is present, the ACPI specification | |
720 | * dictates that the _TSS Power Dissipation field is to be ignored, and | |
721 | * therefore some BIOSs leave garbage values in the _TSS Power field(s). | |
722 | * In this case, it is best to just return the _TSS package as-is. | |
723 | * (May, 2011) | |
724 | */ | |
725 | status = acpi_ns_get_node(info->node, "^_PSS", | |
726 | ACPI_NS_NO_UPSEARCH, &node); | |
727 | if (ACPI_SUCCESS(status)) { | |
728 | return (AE_OK); | |
729 | } | |
730 | ||
5a9792f3 | 731 | status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1, |
aa6329c4 LZ |
732 | ACPI_SORT_DESCENDING, |
733 | "PowerDissipation"); | |
734 | ||
735 | return (status); | |
736 | } | |
737 | ||
ad5babee BM |
738 | /****************************************************************************** |
739 | * | |
740 | * FUNCTION: acpi_ns_check_sorted_list | |
741 | * | |
29a241cc | 742 | * PARAMETERS: info - Method execution information block |
ad5babee | 743 | * return_object - Pointer to the top-level returned object |
0a16d12a BM |
744 | * start_index - Index of the first subpackage |
745 | * expected_count - Minimum length of each subpackage | |
746 | * sort_index - Subpackage entry to sort on | |
ad5babee BM |
747 | * sort_direction - Ascending or descending |
748 | * sort_key_name - Name of the sort_index field | |
749 | * | |
750 | * RETURN: Status. AE_OK if the list is valid and is sorted correctly or | |
751 | * has been repaired by sorting the list. | |
752 | * | |
753 | * DESCRIPTION: Check if the package list is valid and sorted correctly by the | |
754 | * sort_index. If not, then sort the list. | |
755 | * | |
756 | *****************************************************************************/ | |
757 | ||
758 | static acpi_status | |
29a241cc | 759 | acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
ad5babee | 760 | union acpi_operand_object *return_object, |
5a9792f3 | 761 | u32 start_index, |
ad5babee BM |
762 | u32 expected_count, |
763 | u32 sort_index, | |
764 | u8 sort_direction, char *sort_key_name) | |
765 | { | |
766 | u32 outer_element_count; | |
767 | union acpi_operand_object **outer_elements; | |
768 | union acpi_operand_object **elements; | |
769 | union acpi_operand_object *obj_desc; | |
770 | u32 i; | |
771 | u32 previous_value; | |
ad5babee | 772 | |
3a58176e BM |
773 | ACPI_FUNCTION_NAME(ns_check_sorted_list); |
774 | ||
ad5babee BM |
775 | /* The top-level object must be a package */ |
776 | ||
777 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
778 | return (AE_AML_OPERAND_TYPE); | |
779 | } | |
780 | ||
781 | /* | |
0a16d12a | 782 | * NOTE: assumes list of subpackages contains no NULL elements. |
d4085a3f BM |
783 | * Any NULL elements should have been removed by earlier call |
784 | * to acpi_ns_remove_null_elements. | |
ad5babee | 785 | */ |
ad5babee | 786 | outer_element_count = return_object->package.count; |
5a9792f3 | 787 | if (!outer_element_count || start_index >= outer_element_count) { |
ad5babee BM |
788 | return (AE_AML_PACKAGE_LIMIT); |
789 | } | |
790 | ||
5a9792f3 LZ |
791 | outer_elements = &return_object->package.elements[start_index]; |
792 | outer_element_count -= start_index; | |
793 | ||
ad5babee BM |
794 | previous_value = 0; |
795 | if (sort_direction == ACPI_SORT_DESCENDING) { | |
796 | previous_value = ACPI_UINT32_MAX; | |
797 | } | |
798 | ||
799 | /* Examine each subpackage */ | |
800 | ||
801 | for (i = 0; i < outer_element_count; i++) { | |
802 | ||
803 | /* Each element of the top-level package must also be a package */ | |
804 | ||
805 | if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) { | |
806 | return (AE_AML_OPERAND_TYPE); | |
807 | } | |
808 | ||
0a16d12a | 809 | /* Each subpackage must have the minimum length */ |
ad5babee BM |
810 | |
811 | if ((*outer_elements)->package.count < expected_count) { | |
812 | return (AE_AML_PACKAGE_LIMIT); | |
813 | } | |
814 | ||
815 | elements = (*outer_elements)->package.elements; | |
816 | obj_desc = elements[sort_index]; | |
817 | ||
818 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { | |
819 | return (AE_AML_OPERAND_TYPE); | |
820 | } | |
821 | ||
822 | /* | |
823 | * The list must be sorted in the specified order. If we detect a | |
2147d3f0 | 824 | * discrepancy, sort the entire list. |
ad5babee BM |
825 | */ |
826 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
827 | (obj_desc->integer.value < previous_value)) || | |
828 | ((sort_direction == ACPI_SORT_DESCENDING) && | |
829 | (obj_desc->integer.value > previous_value))) { | |
5a9792f3 LZ |
830 | acpi_ns_sort_list(&return_object->package. |
831 | elements[start_index], | |
2147d3f0 BM |
832 | outer_element_count, sort_index, |
833 | sort_direction); | |
ad5babee | 834 | |
29a241cc | 835 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
ad5babee | 836 | |
3a58176e BM |
837 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
838 | "%s: Repaired unsorted list - now sorted by %s\n", | |
29a241cc | 839 | info->full_pathname, sort_key_name)); |
ad5babee BM |
840 | return (AE_OK); |
841 | } | |
842 | ||
843 | previous_value = (u32) obj_desc->integer.value; | |
844 | outer_elements++; | |
845 | } | |
846 | ||
847 | return (AE_OK); | |
848 | } | |
849 | ||
ad5babee BM |
850 | /****************************************************************************** |
851 | * | |
852 | * FUNCTION: acpi_ns_sort_list | |
853 | * | |
ba494bee BM |
854 | * PARAMETERS: elements - Package object element list |
855 | * count - Element count for above | |
856 | * index - Sort by which package element | |
ad5babee BM |
857 | * sort_direction - Ascending or Descending sort |
858 | * | |
2147d3f0 | 859 | * RETURN: None |
ad5babee BM |
860 | * |
861 | * DESCRIPTION: Sort the objects that are in a package element list. | |
862 | * | |
2147d3f0 BM |
863 | * NOTE: Assumes that all NULL elements have been removed from the package, |
864 | * and that all elements have been verified to be of type Integer. | |
ad5babee BM |
865 | * |
866 | *****************************************************************************/ | |
867 | ||
2147d3f0 | 868 | static void |
ad5babee BM |
869 | acpi_ns_sort_list(union acpi_operand_object **elements, |
870 | u32 count, u32 index, u8 sort_direction) | |
871 | { | |
872 | union acpi_operand_object *obj_desc1; | |
873 | union acpi_operand_object *obj_desc2; | |
874 | union acpi_operand_object *temp_obj; | |
875 | u32 i; | |
876 | u32 j; | |
877 | ||
878 | /* Simple bubble sort */ | |
879 | ||
880 | for (i = 1; i < count; i++) { | |
881 | for (j = (count - 1); j >= i; j--) { | |
882 | obj_desc1 = elements[j - 1]->package.elements[index]; | |
883 | obj_desc2 = elements[j]->package.elements[index]; | |
884 | ||
885 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
886 | (obj_desc1->integer.value > | |
887 | obj_desc2->integer.value)) | |
888 | || ((sort_direction == ACPI_SORT_DESCENDING) | |
889 | && (obj_desc1->integer.value < | |
890 | obj_desc2->integer.value))) { | |
891 | temp_obj = elements[j - 1]; | |
892 | elements[j - 1] = elements[j]; | |
893 | elements[j] = temp_obj; | |
894 | } | |
895 | } | |
896 | } | |
ad5babee | 897 | } |
5a9792f3 LZ |
898 | |
899 | /****************************************************************************** | |
900 | * | |
901 | * FUNCTION: acpi_ns_remove_element | |
902 | * | |
903 | * PARAMETERS: obj_desc - Package object element list | |
904 | * index - Index of element to remove | |
905 | * | |
906 | * RETURN: None | |
907 | * | |
908 | * DESCRIPTION: Remove the requested element of a package and delete it. | |
909 | * | |
910 | *****************************************************************************/ | |
911 | ||
912 | static void | |
913 | acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index) | |
914 | { | |
915 | union acpi_operand_object **source; | |
916 | union acpi_operand_object **dest; | |
917 | u32 count; | |
918 | u32 new_count; | |
919 | u32 i; | |
920 | ||
921 | ACPI_FUNCTION_NAME(ns_remove_element); | |
922 | ||
923 | count = obj_desc->package.count; | |
924 | new_count = count - 1; | |
925 | ||
926 | source = obj_desc->package.elements; | |
927 | dest = source; | |
928 | ||
929 | /* Examine all elements of the package object, remove matched index */ | |
930 | ||
931 | for (i = 0; i < count; i++) { | |
932 | if (i == index) { | |
933 | acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */ | |
934 | acpi_ut_remove_reference(*source); | |
935 | } else { | |
936 | *dest = *source; | |
937 | dest++; | |
938 | } | |
1fad8738 | 939 | |
5a9792f3 LZ |
940 | source++; |
941 | } | |
942 | ||
943 | /* NULL terminate list and update the package count */ | |
944 | ||
945 | *dest = NULL; | |
946 | obj_desc->package.count = new_count; | |
947 | } |