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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 | ||
0766efdf EK |
158 | ACPI_FUNCTION_TRACE(ns_complex_repairs); |
159 | ||
ad5babee BM |
160 | /* Check if this name is in the list of repairable names */ |
161 | ||
d5a36100 | 162 | predefined = acpi_ns_match_complex_repair(node); |
ad5babee | 163 | if (!predefined) { |
0766efdf | 164 | return_ACPI_STATUS(validate_status); |
ad5babee BM |
165 | } |
166 | ||
29a241cc | 167 | status = predefined->repair_function(info, return_object_ptr); |
0766efdf | 168 | return_ACPI_STATUS(status); |
ad5babee BM |
169 | } |
170 | ||
171 | /****************************************************************************** | |
172 | * | |
d5a36100 | 173 | * FUNCTION: acpi_ns_match_complex_repair |
ad5babee | 174 | * |
ba494bee | 175 | * PARAMETERS: node - Namespace node for the method/object |
ad5babee BM |
176 | * |
177 | * RETURN: Pointer to entry in repair table. NULL indicates not found. | |
178 | * | |
179 | * DESCRIPTION: Check an object name against the repairable object list. | |
180 | * | |
181 | *****************************************************************************/ | |
182 | ||
d5a36100 BM |
183 | static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct |
184 | acpi_namespace_node | |
185 | *node) | |
ad5babee BM |
186 | { |
187 | const struct acpi_repair_info *this_name; | |
188 | ||
189 | /* Search info table for a repairable predefined method/object name */ | |
190 | ||
191 | this_name = acpi_ns_repairable_names; | |
192 | while (this_name->repair_function) { | |
5599fb69 | 193 | if (ACPI_COMPARE_NAMESEG(node->name.ascii, this_name->name)) { |
ad5babee BM |
194 | return (this_name); |
195 | } | |
1fad8738 | 196 | |
ad5babee BM |
197 | this_name++; |
198 | } | |
199 | ||
200 | return (NULL); /* Not found */ | |
201 | } | |
202 | ||
203 | /****************************************************************************** | |
204 | * | |
205 | * FUNCTION: acpi_ns_repair_ALR | |
206 | * | |
29a241cc | 207 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
208 | * return_object_ptr - Pointer to the object returned from the |
209 | * evaluation of a method or object | |
210 | * | |
211 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
212 | * | |
213 | * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list | |
214 | * ascending by the ambient illuminance values. | |
215 | * | |
216 | *****************************************************************************/ | |
217 | ||
218 | static acpi_status | |
29a241cc | 219 | acpi_ns_repair_ALR(struct acpi_evaluate_info *info, |
ad5babee BM |
220 | union acpi_operand_object **return_object_ptr) |
221 | { | |
222 | union acpi_operand_object *return_object = *return_object_ptr; | |
223 | acpi_status status; | |
224 | ||
5a9792f3 | 225 | status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1, |
ad5babee BM |
226 | ACPI_SORT_ASCENDING, |
227 | "AmbientIlluminance"); | |
228 | ||
229 | return (status); | |
230 | } | |
231 | ||
34c39c75 BM |
232 | /****************************************************************************** |
233 | * | |
234 | * FUNCTION: acpi_ns_repair_FDE | |
235 | * | |
29a241cc | 236 | * PARAMETERS: info - Method execution information block |
34c39c75 BM |
237 | * return_object_ptr - Pointer to the object returned from the |
238 | * evaluation of a method or object | |
239 | * | |
240 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
241 | * | |
242 | * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return | |
43420bbb BM |
243 | * value is a Buffer of 5 DWORDs. This function repairs a common |
244 | * problem where the return value is a Buffer of BYTEs, not | |
245 | * DWORDs. | |
34c39c75 BM |
246 | * |
247 | *****************************************************************************/ | |
248 | ||
249 | static acpi_status | |
29a241cc | 250 | acpi_ns_repair_FDE(struct acpi_evaluate_info *info, |
34c39c75 BM |
251 | union acpi_operand_object **return_object_ptr) |
252 | { | |
253 | union acpi_operand_object *return_object = *return_object_ptr; | |
34c39c75 BM |
254 | union acpi_operand_object *buffer_object; |
255 | u8 *byte_buffer; | |
256 | u32 *dword_buffer; | |
34c39c75 BM |
257 | u32 i; |
258 | ||
3a58176e BM |
259 | ACPI_FUNCTION_NAME(ns_repair_FDE); |
260 | ||
34c39c75 BM |
261 | switch (return_object->common.type) { |
262 | case ACPI_TYPE_BUFFER: | |
263 | ||
264 | /* This is the expected type. Length should be (at least) 5 DWORDs */ | |
265 | ||
266 | if (return_object->buffer.length >= ACPI_FDE_DWORD_BUFFER_SIZE) { | |
267 | return (AE_OK); | |
268 | } | |
269 | ||
270 | /* We can only repair if we have exactly 5 BYTEs */ | |
271 | ||
272 | if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) { | |
1fad8738 BM |
273 | ACPI_WARN_PREDEFINED((AE_INFO, |
274 | info->full_pathname, | |
29a241cc | 275 | info->node_flags, |
34c39c75 BM |
276 | "Incorrect return buffer length %u, expected %u", |
277 | return_object->buffer.length, | |
278 | ACPI_FDE_DWORD_BUFFER_SIZE)); | |
279 | ||
280 | return (AE_AML_OPERAND_TYPE); | |
281 | } | |
282 | ||
283 | /* Create the new (larger) buffer object */ | |
284 | ||
285 | buffer_object = | |
286 | acpi_ut_create_buffer_object(ACPI_FDE_DWORD_BUFFER_SIZE); | |
287 | if (!buffer_object) { | |
288 | return (AE_NO_MEMORY); | |
289 | } | |
290 | ||
291 | /* Expand each byte to a DWORD */ | |
292 | ||
293 | byte_buffer = return_object->buffer.pointer; | |
1fad8738 BM |
294 | dword_buffer = ACPI_CAST_PTR(u32, |
295 | buffer_object->buffer.pointer); | |
34c39c75 BM |
296 | |
297 | for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) { | |
298 | *dword_buffer = (u32) *byte_buffer; | |
299 | dword_buffer++; | |
300 | byte_buffer++; | |
301 | } | |
302 | ||
3a58176e BM |
303 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
304 | "%s Expanded Byte Buffer to expected DWord Buffer\n", | |
29a241cc | 305 | info->full_pathname)); |
34c39c75 BM |
306 | break; |
307 | ||
34c39c75 | 308 | default: |
1d1ea1b7 | 309 | |
34c39c75 BM |
310 | return (AE_AML_OPERAND_TYPE); |
311 | } | |
312 | ||
313 | /* Delete the original return object, return the new buffer object */ | |
314 | ||
315 | acpi_ut_remove_reference(return_object); | |
316 | *return_object_ptr = buffer_object; | |
317 | ||
29a241cc | 318 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
34c39c75 | 319 | return (AE_OK); |
77b23f71 BM |
320 | } |
321 | ||
322 | /****************************************************************************** | |
323 | * | |
324 | * FUNCTION: acpi_ns_repair_CID | |
325 | * | |
29a241cc | 326 | * PARAMETERS: info - Method execution information block |
77b23f71 BM |
327 | * return_object_ptr - Pointer to the object returned from the |
328 | * evaluation of a method or object | |
329 | * | |
330 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
331 | * | |
332 | * DESCRIPTION: Repair for the _CID object. If a string, ensure that all | |
333 | * letters are uppercase and that there is no leading asterisk. | |
334 | * If a Package, ensure same for all string elements. | |
335 | * | |
336 | *****************************************************************************/ | |
337 | ||
338 | static acpi_status | |
29a241cc | 339 | acpi_ns_repair_CID(struct acpi_evaluate_info *info, |
77b23f71 BM |
340 | union acpi_operand_object **return_object_ptr) |
341 | { | |
342 | acpi_status status; | |
343 | union acpi_operand_object *return_object = *return_object_ptr; | |
344 | union acpi_operand_object **element_ptr; | |
345 | union acpi_operand_object *original_element; | |
346 | u16 original_ref_count; | |
347 | u32 i; | |
348 | ||
0766efdf EK |
349 | ACPI_FUNCTION_TRACE(ns_repair_CID); |
350 | ||
77b23f71 BM |
351 | /* Check for _CID as a simple string */ |
352 | ||
353 | if (return_object->common.type == ACPI_TYPE_STRING) { | |
29a241cc | 354 | status = acpi_ns_repair_HID(info, return_object_ptr); |
0766efdf | 355 | return_ACPI_STATUS(status); |
77b23f71 BM |
356 | } |
357 | ||
358 | /* Exit if not a Package */ | |
359 | ||
360 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
0766efdf | 361 | return_ACPI_STATUS(AE_OK); |
77b23f71 BM |
362 | } |
363 | ||
364 | /* Examine each element of the _CID package */ | |
365 | ||
366 | element_ptr = return_object->package.elements; | |
367 | for (i = 0; i < return_object->package.count; i++) { | |
368 | original_element = *element_ptr; | |
369 | original_ref_count = original_element->common.reference_count; | |
370 | ||
29a241cc | 371 | status = acpi_ns_repair_HID(info, element_ptr); |
77b23f71 | 372 | if (ACPI_FAILURE(status)) { |
0766efdf | 373 | return_ACPI_STATUS(status); |
77b23f71 BM |
374 | } |
375 | ||
77b23f71 BM |
376 | if (original_element != *element_ptr) { |
377 | ||
ed7f8bc9 | 378 | /* Update reference count of new object */ |
77b23f71 BM |
379 | |
380 | (*element_ptr)->common.reference_count = | |
381 | original_ref_count; | |
77b23f71 BM |
382 | } |
383 | ||
384 | element_ptr++; | |
385 | } | |
386 | ||
0766efdf | 387 | return_ACPI_STATUS(AE_OK); |
77b23f71 BM |
388 | } |
389 | ||
5a9792f3 LZ |
390 | /****************************************************************************** |
391 | * | |
392 | * FUNCTION: acpi_ns_repair_CST | |
393 | * | |
394 | * PARAMETERS: info - Method execution information block | |
395 | * return_object_ptr - Pointer to the object returned from the | |
396 | * evaluation of a method or object | |
397 | * | |
398 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
399 | * | |
400 | * DESCRIPTION: Repair for the _CST object: | |
401 | * 1. Sort the list ascending by C state type | |
402 | * 2. Ensure type cannot be zero | |
0a16d12a BM |
403 | * 3. A subpackage count of zero means _CST is meaningless |
404 | * 4. Count must match the number of C state subpackages | |
5a9792f3 LZ |
405 | * |
406 | *****************************************************************************/ | |
407 | ||
408 | static acpi_status | |
409 | acpi_ns_repair_CST(struct acpi_evaluate_info *info, | |
410 | union acpi_operand_object **return_object_ptr) | |
411 | { | |
412 | union acpi_operand_object *return_object = *return_object_ptr; | |
413 | union acpi_operand_object **outer_elements; | |
414 | u32 outer_element_count; | |
415 | union acpi_operand_object *obj_desc; | |
416 | acpi_status status; | |
417 | u8 removing; | |
418 | u32 i; | |
419 | ||
420 | ACPI_FUNCTION_NAME(ns_repair_CST); | |
421 | ||
422 | /* | |
341e7ba1 | 423 | * Check if the C-state type values are proportional. |
5a9792f3 LZ |
424 | */ |
425 | outer_element_count = return_object->package.count - 1; | |
426 | i = 0; | |
427 | while (i < outer_element_count) { | |
428 | outer_elements = &return_object->package.elements[i + 1]; | |
429 | removing = FALSE; | |
430 | ||
431 | if ((*outer_elements)->package.count == 0) { | |
1fad8738 BM |
432 | ACPI_WARN_PREDEFINED((AE_INFO, |
433 | info->full_pathname, | |
5a9792f3 LZ |
434 | info->node_flags, |
435 | "SubPackage[%u] - removing entry due to zero count", | |
436 | i)); | |
437 | removing = TRUE; | |
438 | goto remove_element; | |
439 | } | |
440 | ||
441 | obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */ | |
442 | if ((u32)obj_desc->integer.value == 0) { | |
1fad8738 BM |
443 | ACPI_WARN_PREDEFINED((AE_INFO, |
444 | info->full_pathname, | |
5a9792f3 LZ |
445 | info->node_flags, |
446 | "SubPackage[%u] - removing entry due to invalid Type(0)", | |
447 | i)); | |
448 | removing = TRUE; | |
449 | } | |
450 | ||
10622bf8 | 451 | remove_element: |
5a9792f3 LZ |
452 | if (removing) { |
453 | acpi_ns_remove_element(return_object, i + 1); | |
454 | outer_element_count--; | |
455 | } else { | |
456 | i++; | |
457 | } | |
458 | } | |
459 | ||
460 | /* Update top-level package count, Type "Integer" checked elsewhere */ | |
461 | ||
462 | obj_desc = return_object->package.elements[0]; | |
463 | obj_desc->integer.value = outer_element_count; | |
341e7ba1 LZ |
464 | |
465 | /* | |
466 | * Entries (subpackages) in the _CST Package must be sorted by the | |
467 | * C-state type, in ascending order. | |
468 | */ | |
469 | status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1, | |
470 | ACPI_SORT_ASCENDING, "C-State Type"); | |
471 | if (ACPI_FAILURE(status)) { | |
472 | return (status); | |
473 | } | |
474 | ||
5a9792f3 LZ |
475 | return (AE_OK); |
476 | } | |
477 | ||
77b23f71 BM |
478 | /****************************************************************************** |
479 | * | |
480 | * FUNCTION: acpi_ns_repair_HID | |
481 | * | |
29a241cc | 482 | * PARAMETERS: info - Method execution information block |
77b23f71 BM |
483 | * return_object_ptr - Pointer to the object returned from the |
484 | * evaluation of a method or object | |
485 | * | |
486 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
487 | * | |
488 | * DESCRIPTION: Repair for the _HID object. If a string, ensure that all | |
489 | * letters are uppercase and that there is no leading asterisk. | |
490 | * | |
491 | *****************************************************************************/ | |
492 | ||
493 | static acpi_status | |
29a241cc | 494 | acpi_ns_repair_HID(struct acpi_evaluate_info *info, |
77b23f71 BM |
495 | union acpi_operand_object **return_object_ptr) |
496 | { | |
497 | union acpi_operand_object *return_object = *return_object_ptr; | |
fe0af090 | 498 | union acpi_operand_object *new_string; |
32cf1a12 | 499 | char *source; |
fe0af090 | 500 | char *dest; |
77b23f71 BM |
501 | |
502 | ACPI_FUNCTION_NAME(ns_repair_HID); | |
503 | ||
504 | /* We only care about string _HID objects (not integers) */ | |
505 | ||
506 | if (return_object->common.type != ACPI_TYPE_STRING) { | |
0766efdf | 507 | return_ACPI_STATUS(AE_OK); |
77b23f71 BM |
508 | } |
509 | ||
510 | if (return_object->string.length == 0) { | |
1fad8738 BM |
511 | ACPI_WARN_PREDEFINED((AE_INFO, |
512 | info->full_pathname, info->node_flags, | |
77b23f71 BM |
513 | "Invalid zero-length _HID or _CID string")); |
514 | ||
515 | /* Return AE_OK anyway, let driver handle it */ | |
516 | ||
29a241cc | 517 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
0766efdf | 518 | return_ACPI_STATUS(AE_OK); |
77b23f71 BM |
519 | } |
520 | ||
fe0af090 AB |
521 | /* It is simplest to always create a new string object */ |
522 | ||
523 | new_string = acpi_ut_create_string_object(return_object->string.length); | |
524 | if (!new_string) { | |
525 | return_ACPI_STATUS(AE_NO_MEMORY); | |
526 | } | |
527 | ||
77b23f71 BM |
528 | /* |
529 | * Remove a leading asterisk if present. For some unknown reason, there | |
530 | * are many machines in the field that contains IDs like this. | |
531 | * | |
532 | * Examples: "*PNP0C03", "*ACPI0003" | |
533 | */ | |
534 | source = return_object->string.pointer; | |
535 | if (*source == '*') { | |
536 | source++; | |
fe0af090 | 537 | new_string->string.length--; |
77b23f71 BM |
538 | |
539 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, | |
540 | "%s: Removed invalid leading asterisk\n", | |
29a241cc | 541 | info->full_pathname)); |
77b23f71 BM |
542 | } |
543 | ||
544 | /* | |
7fce7a4b | 545 | * Copy and uppercase the string. From the ACPI 5.0 specification: |
77b23f71 BM |
546 | * |
547 | * A valid PNP ID must be of the form "AAA####" where A is an uppercase | |
548 | * letter and # is a hex digit. A valid ACPI ID must be of the form | |
7fce7a4b BM |
549 | * "NNNN####" where N is an uppercase letter or decimal digit, and |
550 | * # is a hex digit. | |
77b23f71 | 551 | */ |
fe0af090 | 552 | for (dest = new_string->string.pointer; *source; dest++, source++) { |
4fa4616e | 553 | *dest = (char)toupper((int)*source); |
77b23f71 BM |
554 | } |
555 | ||
fe0af090 AB |
556 | acpi_ut_remove_reference(return_object); |
557 | *return_object_ptr = new_string; | |
0766efdf | 558 | return_ACPI_STATUS(AE_OK); |
34c39c75 BM |
559 | } |
560 | ||
ad5babee BM |
561 | /****************************************************************************** |
562 | * | |
aa6329c4 | 563 | * FUNCTION: acpi_ns_repair_PRT |
ad5babee | 564 | * |
29a241cc | 565 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
566 | * return_object_ptr - Pointer to the object returned from the |
567 | * evaluation of a method or object | |
568 | * | |
569 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
570 | * | |
aa6329c4 LZ |
571 | * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed |
572 | * source_name and source_index field, a common BIOS bug. | |
ad5babee BM |
573 | * |
574 | *****************************************************************************/ | |
575 | ||
576 | static acpi_status | |
aa6329c4 | 577 | acpi_ns_repair_PRT(struct acpi_evaluate_info *info, |
ad5babee BM |
578 | union acpi_operand_object **return_object_ptr) |
579 | { | |
aa6329c4 LZ |
580 | union acpi_operand_object *package_object = *return_object_ptr; |
581 | union acpi_operand_object **top_object_list; | |
582 | union acpi_operand_object **sub_object_list; | |
583 | union acpi_operand_object *obj_desc; | |
1c3c2a54 | 584 | union acpi_operand_object *sub_package; |
aa6329c4 LZ |
585 | u32 element_count; |
586 | u32 index; | |
8f9c9127 | 587 | |
aa6329c4 | 588 | /* Each element in the _PRT package is a subpackage */ |
ad5babee | 589 | |
aa6329c4 LZ |
590 | top_object_list = package_object->package.elements; |
591 | element_count = package_object->package.count; | |
ad5babee | 592 | |
69e6bb68 BM |
593 | /* Examine each subpackage */ |
594 | ||
595 | for (index = 0; index < element_count; index++, top_object_list++) { | |
1c3c2a54 BM |
596 | sub_package = *top_object_list; |
597 | sub_object_list = sub_package->package.elements; | |
598 | ||
69e6bb68 BM |
599 | /* Check for minimum required element count */ |
600 | ||
601 | if (sub_package->package.count < 4) { | |
602 | continue; | |
1c3c2a54 | 603 | } |
aa6329c4 LZ |
604 | |
605 | /* | |
606 | * If the BIOS has erroneously reversed the _PRT source_name (index 2) | |
607 | * and the source_index (index 3), fix it. _PRT is important enough to | |
608 | * workaround this BIOS error. This also provides compatibility with | |
609 | * other ACPI implementations. | |
610 | */ | |
611 | obj_desc = sub_object_list[3]; | |
612 | if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { | |
613 | sub_object_list[3] = sub_object_list[2]; | |
614 | sub_object_list[2] = obj_desc; | |
615 | info->return_flags |= ACPI_OBJECT_REPAIRED; | |
616 | ||
69e6bb68 BM |
617 | ACPI_WARN_PREDEFINED((AE_INFO, |
618 | info->full_pathname, | |
aa6329c4 LZ |
619 | info->node_flags, |
620 | "PRT[%X]: Fixed reversed SourceName and SourceIndex", | |
621 | index)); | |
622 | } | |
aa6329c4 LZ |
623 | } |
624 | ||
625 | return (AE_OK); | |
ad5babee BM |
626 | } |
627 | ||
628 | /****************************************************************************** | |
629 | * | |
630 | * FUNCTION: acpi_ns_repair_PSS | |
631 | * | |
29a241cc | 632 | * PARAMETERS: info - Method execution information block |
ad5babee BM |
633 | * return_object_ptr - Pointer to the object returned from the |
634 | * evaluation of a method or object | |
635 | * | |
636 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
637 | * | |
638 | * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list | |
639 | * by the CPU frequencies. Check that the power dissipation values | |
640 | * are all proportional to CPU frequency (i.e., sorting by | |
641 | * frequency should be the same as sorting by power.) | |
642 | * | |
643 | *****************************************************************************/ | |
644 | ||
645 | static acpi_status | |
29a241cc | 646 | acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
ad5babee BM |
647 | union acpi_operand_object **return_object_ptr) |
648 | { | |
649 | union acpi_operand_object *return_object = *return_object_ptr; | |
650 | union acpi_operand_object **outer_elements; | |
651 | u32 outer_element_count; | |
652 | union acpi_operand_object **elements; | |
653 | union acpi_operand_object *obj_desc; | |
654 | u32 previous_value; | |
655 | acpi_status status; | |
656 | u32 i; | |
657 | ||
658 | /* | |
0a16d12a | 659 | * Entries (subpackages) in the _PSS Package must be sorted by power |
ad5babee BM |
660 | * dissipation, in descending order. If it appears that the list is |
661 | * incorrectly sorted, sort it. We sort by cpu_frequency, since this | |
662 | * should be proportional to the power. | |
663 | */ | |
5a9792f3 | 664 | status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0, |
ad5babee BM |
665 | ACPI_SORT_DESCENDING, |
666 | "CpuFrequency"); | |
667 | if (ACPI_FAILURE(status)) { | |
668 | return (status); | |
669 | } | |
670 | ||
671 | /* | |
672 | * We now know the list is correctly sorted by CPU frequency. Check if | |
673 | * the power dissipation values are proportional. | |
674 | */ | |
675 | previous_value = ACPI_UINT32_MAX; | |
676 | outer_elements = return_object->package.elements; | |
677 | outer_element_count = return_object->package.count; | |
678 | ||
679 | for (i = 0; i < outer_element_count; i++) { | |
680 | elements = (*outer_elements)->package.elements; | |
681 | obj_desc = elements[1]; /* Index1 = power_dissipation */ | |
682 | ||
5431b654 | 683 | if ((u32)obj_desc->integer.value > previous_value) { |
1fad8738 BM |
684 | ACPI_WARN_PREDEFINED((AE_INFO, |
685 | info->full_pathname, | |
29a241cc | 686 | info->node_flags, |
ad5babee BM |
687 | "SubPackage[%u,%u] - suspicious power dissipation values", |
688 | i - 1, i)); | |
689 | } | |
690 | ||
691 | previous_value = (u32) obj_desc->integer.value; | |
692 | outer_elements++; | |
693 | } | |
694 | ||
695 | return (AE_OK); | |
696 | } | |
697 | ||
aa6329c4 LZ |
698 | /****************************************************************************** |
699 | * | |
700 | * FUNCTION: acpi_ns_repair_TSS | |
701 | * | |
702 | * PARAMETERS: info - Method execution information block | |
703 | * return_object_ptr - Pointer to the object returned from the | |
704 | * evaluation of a method or object | |
705 | * | |
706 | * RETURN: Status. AE_OK if object is OK or was repaired successfully | |
707 | * | |
708 | * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list | |
709 | * descending by the power dissipation values. | |
710 | * | |
711 | *****************************************************************************/ | |
712 | ||
713 | static acpi_status | |
714 | acpi_ns_repair_TSS(struct acpi_evaluate_info *info, | |
715 | union acpi_operand_object **return_object_ptr) | |
716 | { | |
717 | union acpi_operand_object *return_object = *return_object_ptr; | |
718 | acpi_status status; | |
719 | struct acpi_namespace_node *node; | |
720 | ||
721 | /* | |
722 | * We can only sort the _TSS return package if there is no _PSS in the | |
723 | * same scope. This is because if _PSS is present, the ACPI specification | |
724 | * dictates that the _TSS Power Dissipation field is to be ignored, and | |
725 | * therefore some BIOSs leave garbage values in the _TSS Power field(s). | |
726 | * In this case, it is best to just return the _TSS package as-is. | |
727 | * (May, 2011) | |
728 | */ | |
729 | status = acpi_ns_get_node(info->node, "^_PSS", | |
730 | ACPI_NS_NO_UPSEARCH, &node); | |
731 | if (ACPI_SUCCESS(status)) { | |
732 | return (AE_OK); | |
733 | } | |
734 | ||
5a9792f3 | 735 | status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1, |
aa6329c4 LZ |
736 | ACPI_SORT_DESCENDING, |
737 | "PowerDissipation"); | |
738 | ||
739 | return (status); | |
740 | } | |
741 | ||
ad5babee BM |
742 | /****************************************************************************** |
743 | * | |
744 | * FUNCTION: acpi_ns_check_sorted_list | |
745 | * | |
29a241cc | 746 | * PARAMETERS: info - Method execution information block |
ad5babee | 747 | * return_object - Pointer to the top-level returned object |
0a16d12a BM |
748 | * start_index - Index of the first subpackage |
749 | * expected_count - Minimum length of each subpackage | |
750 | * sort_index - Subpackage entry to sort on | |
ad5babee BM |
751 | * sort_direction - Ascending or descending |
752 | * sort_key_name - Name of the sort_index field | |
753 | * | |
754 | * RETURN: Status. AE_OK if the list is valid and is sorted correctly or | |
755 | * has been repaired by sorting the list. | |
756 | * | |
757 | * DESCRIPTION: Check if the package list is valid and sorted correctly by the | |
758 | * sort_index. If not, then sort the list. | |
759 | * | |
760 | *****************************************************************************/ | |
761 | ||
762 | static acpi_status | |
29a241cc | 763 | acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
ad5babee | 764 | union acpi_operand_object *return_object, |
5a9792f3 | 765 | u32 start_index, |
ad5babee BM |
766 | u32 expected_count, |
767 | u32 sort_index, | |
768 | u8 sort_direction, char *sort_key_name) | |
769 | { | |
770 | u32 outer_element_count; | |
771 | union acpi_operand_object **outer_elements; | |
772 | union acpi_operand_object **elements; | |
773 | union acpi_operand_object *obj_desc; | |
774 | u32 i; | |
775 | u32 previous_value; | |
ad5babee | 776 | |
3a58176e BM |
777 | ACPI_FUNCTION_NAME(ns_check_sorted_list); |
778 | ||
ad5babee BM |
779 | /* The top-level object must be a package */ |
780 | ||
781 | if (return_object->common.type != ACPI_TYPE_PACKAGE) { | |
782 | return (AE_AML_OPERAND_TYPE); | |
783 | } | |
784 | ||
785 | /* | |
0a16d12a | 786 | * NOTE: assumes list of subpackages contains no NULL elements. |
d4085a3f BM |
787 | * Any NULL elements should have been removed by earlier call |
788 | * to acpi_ns_remove_null_elements. | |
ad5babee | 789 | */ |
ad5babee | 790 | outer_element_count = return_object->package.count; |
5a9792f3 | 791 | if (!outer_element_count || start_index >= outer_element_count) { |
ad5babee BM |
792 | return (AE_AML_PACKAGE_LIMIT); |
793 | } | |
794 | ||
5a9792f3 LZ |
795 | outer_elements = &return_object->package.elements[start_index]; |
796 | outer_element_count -= start_index; | |
797 | ||
ad5babee BM |
798 | previous_value = 0; |
799 | if (sort_direction == ACPI_SORT_DESCENDING) { | |
800 | previous_value = ACPI_UINT32_MAX; | |
801 | } | |
802 | ||
803 | /* Examine each subpackage */ | |
804 | ||
805 | for (i = 0; i < outer_element_count; i++) { | |
806 | ||
807 | /* Each element of the top-level package must also be a package */ | |
808 | ||
809 | if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) { | |
810 | return (AE_AML_OPERAND_TYPE); | |
811 | } | |
812 | ||
0a16d12a | 813 | /* Each subpackage must have the minimum length */ |
ad5babee BM |
814 | |
815 | if ((*outer_elements)->package.count < expected_count) { | |
816 | return (AE_AML_PACKAGE_LIMIT); | |
817 | } | |
818 | ||
819 | elements = (*outer_elements)->package.elements; | |
820 | obj_desc = elements[sort_index]; | |
821 | ||
822 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { | |
823 | return (AE_AML_OPERAND_TYPE); | |
824 | } | |
825 | ||
826 | /* | |
827 | * The list must be sorted in the specified order. If we detect a | |
2147d3f0 | 828 | * discrepancy, sort the entire list. |
ad5babee BM |
829 | */ |
830 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
831 | (obj_desc->integer.value < previous_value)) || | |
832 | ((sort_direction == ACPI_SORT_DESCENDING) && | |
833 | (obj_desc->integer.value > previous_value))) { | |
5a9792f3 LZ |
834 | acpi_ns_sort_list(&return_object->package. |
835 | elements[start_index], | |
2147d3f0 BM |
836 | outer_element_count, sort_index, |
837 | sort_direction); | |
ad5babee | 838 | |
29a241cc | 839 | info->return_flags |= ACPI_OBJECT_REPAIRED; |
ad5babee | 840 | |
3a58176e BM |
841 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
842 | "%s: Repaired unsorted list - now sorted by %s\n", | |
29a241cc | 843 | info->full_pathname, sort_key_name)); |
ad5babee BM |
844 | return (AE_OK); |
845 | } | |
846 | ||
847 | previous_value = (u32) obj_desc->integer.value; | |
848 | outer_elements++; | |
849 | } | |
850 | ||
851 | return (AE_OK); | |
852 | } | |
853 | ||
ad5babee BM |
854 | /****************************************************************************** |
855 | * | |
856 | * FUNCTION: acpi_ns_sort_list | |
857 | * | |
ba494bee BM |
858 | * PARAMETERS: elements - Package object element list |
859 | * count - Element count for above | |
860 | * index - Sort by which package element | |
ad5babee BM |
861 | * sort_direction - Ascending or Descending sort |
862 | * | |
2147d3f0 | 863 | * RETURN: None |
ad5babee BM |
864 | * |
865 | * DESCRIPTION: Sort the objects that are in a package element list. | |
866 | * | |
2147d3f0 BM |
867 | * NOTE: Assumes that all NULL elements have been removed from the package, |
868 | * and that all elements have been verified to be of type Integer. | |
ad5babee BM |
869 | * |
870 | *****************************************************************************/ | |
871 | ||
2147d3f0 | 872 | static void |
ad5babee BM |
873 | acpi_ns_sort_list(union acpi_operand_object **elements, |
874 | u32 count, u32 index, u8 sort_direction) | |
875 | { | |
876 | union acpi_operand_object *obj_desc1; | |
877 | union acpi_operand_object *obj_desc2; | |
878 | union acpi_operand_object *temp_obj; | |
879 | u32 i; | |
880 | u32 j; | |
881 | ||
882 | /* Simple bubble sort */ | |
883 | ||
884 | for (i = 1; i < count; i++) { | |
885 | for (j = (count - 1); j >= i; j--) { | |
886 | obj_desc1 = elements[j - 1]->package.elements[index]; | |
887 | obj_desc2 = elements[j]->package.elements[index]; | |
888 | ||
889 | if (((sort_direction == ACPI_SORT_ASCENDING) && | |
890 | (obj_desc1->integer.value > | |
891 | obj_desc2->integer.value)) | |
892 | || ((sort_direction == ACPI_SORT_DESCENDING) | |
893 | && (obj_desc1->integer.value < | |
894 | obj_desc2->integer.value))) { | |
895 | temp_obj = elements[j - 1]; | |
896 | elements[j - 1] = elements[j]; | |
897 | elements[j] = temp_obj; | |
898 | } | |
899 | } | |
900 | } | |
ad5babee | 901 | } |
5a9792f3 LZ |
902 | |
903 | /****************************************************************************** | |
904 | * | |
905 | * FUNCTION: acpi_ns_remove_element | |
906 | * | |
907 | * PARAMETERS: obj_desc - Package object element list | |
908 | * index - Index of element to remove | |
909 | * | |
910 | * RETURN: None | |
911 | * | |
912 | * DESCRIPTION: Remove the requested element of a package and delete it. | |
913 | * | |
914 | *****************************************************************************/ | |
915 | ||
916 | static void | |
917 | acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index) | |
918 | { | |
919 | union acpi_operand_object **source; | |
920 | union acpi_operand_object **dest; | |
921 | u32 count; | |
922 | u32 new_count; | |
923 | u32 i; | |
924 | ||
925 | ACPI_FUNCTION_NAME(ns_remove_element); | |
926 | ||
927 | count = obj_desc->package.count; | |
928 | new_count = count - 1; | |
929 | ||
930 | source = obj_desc->package.elements; | |
931 | dest = source; | |
932 | ||
933 | /* Examine all elements of the package object, remove matched index */ | |
934 | ||
935 | for (i = 0; i < count; i++) { | |
936 | if (i == index) { | |
937 | acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */ | |
938 | acpi_ut_remove_reference(*source); | |
939 | } else { | |
940 | *dest = *source; | |
941 | dest++; | |
942 | } | |
1fad8738 | 943 | |
5a9792f3 LZ |
944 | source++; |
945 | } | |
946 | ||
947 | /* NULL terminate list and update the package count */ | |
948 | ||
949 | *dest = NULL; | |
950 | obj_desc->package.count = new_count; | |
951 | } |