1 | /****************************************************************************** |
2 | * |
3 | * Module Name: nsrepair2 - Repair for objects returned by specific |
4 | * predefined methods |
5 | * |
6 | *****************************************************************************/ |
7 | |
8 | /* |
9 | * Copyright (C) 2000 - 2016, Intel Corp. |
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.h" |
46 | #include "accommon.h" |
47 | #include "acnamesp.h" |
48 | |
49 | #define _COMPONENT ACPI_NAMESPACE |
50 | ACPI_MODULE_NAME ("nsrepair2" ) |
51 | |
52 | |
53 | /* |
54 | * Information structure and handler for ACPI predefined names that can |
55 | * be repaired on a per-name basis. |
56 | */ |
57 | typedef |
58 | ACPI_STATUS (*ACPI_REPAIR_FUNCTION) ( |
59 | ACPI_EVALUATE_INFO *Info, |
60 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
61 | |
62 | typedef struct acpi_repair_info |
63 | { |
64 | char Name[ACPI_NAME_SIZE]; |
65 | ACPI_REPAIR_FUNCTION RepairFunction; |
66 | |
67 | } ACPI_REPAIR_INFO; |
68 | |
69 | |
70 | /* Local prototypes */ |
71 | |
72 | static const ACPI_REPAIR_INFO * |
73 | AcpiNsMatchComplexRepair ( |
74 | ACPI_NAMESPACE_NODE *Node); |
75 | |
76 | static ACPI_STATUS |
77 | AcpiNsRepair_ALR ( |
78 | ACPI_EVALUATE_INFO *Info, |
79 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
80 | |
81 | static ACPI_STATUS |
82 | AcpiNsRepair_CID ( |
83 | ACPI_EVALUATE_INFO *Info, |
84 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
85 | |
86 | static ACPI_STATUS |
87 | AcpiNsRepair_CST ( |
88 | ACPI_EVALUATE_INFO *Info, |
89 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
90 | |
91 | static ACPI_STATUS |
92 | AcpiNsRepair_FDE ( |
93 | ACPI_EVALUATE_INFO *Info, |
94 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
95 | |
96 | static ACPI_STATUS |
97 | AcpiNsRepair_HID ( |
98 | ACPI_EVALUATE_INFO *Info, |
99 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
100 | |
101 | static ACPI_STATUS |
102 | AcpiNsRepair_PRT ( |
103 | ACPI_EVALUATE_INFO *Info, |
104 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
105 | |
106 | static ACPI_STATUS |
107 | AcpiNsRepair_PSS ( |
108 | ACPI_EVALUATE_INFO *Info, |
109 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
110 | |
111 | static ACPI_STATUS |
112 | AcpiNsRepair_TSS ( |
113 | ACPI_EVALUATE_INFO *Info, |
114 | ACPI_OPERAND_OBJECT **ReturnObjectPtr); |
115 | |
116 | static ACPI_STATUS |
117 | AcpiNsCheckSortedList ( |
118 | ACPI_EVALUATE_INFO *Info, |
119 | ACPI_OPERAND_OBJECT *ReturnObject, |
120 | UINT32 StartIndex, |
121 | UINT32 ExpectedCount, |
122 | UINT32 SortIndex, |
123 | UINT8 SortDirection, |
124 | const char *SortKeyName); |
125 | |
126 | /* Values for SortDirection above */ |
127 | |
128 | #define ACPI_SORT_ASCENDING 0 |
129 | #define ACPI_SORT_DESCENDING 1 |
130 | |
131 | static void |
132 | AcpiNsRemoveElement ( |
133 | ACPI_OPERAND_OBJECT *ObjDesc, |
134 | UINT32 Index); |
135 | |
136 | static void |
137 | AcpiNsSortList ( |
138 | ACPI_OPERAND_OBJECT **Elements, |
139 | UINT32 Count, |
140 | UINT32 Index, |
141 | UINT8 SortDirection); |
142 | |
143 | |
144 | /* |
145 | * This table contains the names of the predefined methods for which we can |
146 | * perform more complex repairs. |
147 | * |
148 | * As necessary: |
149 | * |
150 | * _ALR: Sort the list ascending by AmbientIlluminance |
151 | * _CID: Strings: uppercase all, remove any leading asterisk |
152 | * _CST: Sort the list ascending by C state type |
153 | * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs |
154 | * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs |
155 | * _HID: Strings: uppercase all, remove any leading asterisk |
156 | * _PRT: Fix reversed SourceName and SourceIndex |
157 | * _PSS: Sort the list descending by Power |
158 | * _TSS: Sort the list descending by Power |
159 | * |
160 | * Names that must be packages, but cannot be sorted: |
161 | * |
162 | * _BCL: Values are tied to the Package index where they appear, and cannot |
163 | * be moved or sorted. These index values are used for _BQC and _BCM. |
164 | * However, we can fix the case where a buffer is returned, by converting |
165 | * it to a Package of integers. |
166 | */ |
167 | static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] = |
168 | { |
169 | {"_ALR" , AcpiNsRepair_ALR}, |
170 | {"_CID" , AcpiNsRepair_CID}, |
171 | {"_CST" , AcpiNsRepair_CST}, |
172 | {"_FDE" , AcpiNsRepair_FDE}, |
173 | {"_GTM" , AcpiNsRepair_FDE}, /* _GTM has same repair as _FDE */ |
174 | {"_HID" , AcpiNsRepair_HID}, |
175 | {"_PRT" , AcpiNsRepair_PRT}, |
176 | {"_PSS" , AcpiNsRepair_PSS}, |
177 | {"_TSS" , AcpiNsRepair_TSS}, |
178 | {{0,0,0,0}, NULL} /* Table terminator */ |
179 | }; |
180 | |
181 | |
182 | #define ACPI_FDE_FIELD_COUNT 5 |
183 | #define ACPI_FDE_BYTE_BUFFER_SIZE 5 |
184 | #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (UINT32)) |
185 | |
186 | |
187 | /****************************************************************************** |
188 | * |
189 | * FUNCTION: AcpiNsComplexRepairs |
190 | * |
191 | * PARAMETERS: Info - Method execution information block |
192 | * Node - Namespace node for the method/object |
193 | * ValidateStatus - Original status of earlier validation |
194 | * ReturnObjectPtr - Pointer to the object returned from the |
195 | * evaluation of a method or object |
196 | * |
197 | * RETURN: Status. AE_OK if repair was successful. If name is not |
198 | * matched, ValidateStatus is returned. |
199 | * |
200 | * DESCRIPTION: Attempt to repair/convert a return object of a type that was |
201 | * not expected. |
202 | * |
203 | *****************************************************************************/ |
204 | |
205 | ACPI_STATUS |
206 | AcpiNsComplexRepairs ( |
207 | ACPI_EVALUATE_INFO *Info, |
208 | ACPI_NAMESPACE_NODE *Node, |
209 | ACPI_STATUS ValidateStatus, |
210 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
211 | { |
212 | const ACPI_REPAIR_INFO *Predefined; |
213 | ACPI_STATUS Status; |
214 | |
215 | |
216 | /* Check if this name is in the list of repairable names */ |
217 | |
218 | Predefined = AcpiNsMatchComplexRepair (Node); |
219 | if (!Predefined) |
220 | { |
221 | return (ValidateStatus); |
222 | } |
223 | |
224 | Status = Predefined->RepairFunction (Info, ReturnObjectPtr); |
225 | return (Status); |
226 | } |
227 | |
228 | |
229 | /****************************************************************************** |
230 | * |
231 | * FUNCTION: AcpiNsMatchComplexRepair |
232 | * |
233 | * PARAMETERS: Node - Namespace node for the method/object |
234 | * |
235 | * RETURN: Pointer to entry in repair table. NULL indicates not found. |
236 | * |
237 | * DESCRIPTION: Check an object name against the repairable object list. |
238 | * |
239 | *****************************************************************************/ |
240 | |
241 | static const ACPI_REPAIR_INFO * |
242 | AcpiNsMatchComplexRepair ( |
243 | ACPI_NAMESPACE_NODE *Node) |
244 | { |
245 | const ACPI_REPAIR_INFO *ThisName; |
246 | |
247 | |
248 | /* Search info table for a repairable predefined method/object name */ |
249 | |
250 | ThisName = AcpiNsRepairableNames; |
251 | while (ThisName->RepairFunction) |
252 | { |
253 | if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name)) |
254 | { |
255 | return (ThisName); |
256 | } |
257 | |
258 | ThisName++; |
259 | } |
260 | |
261 | return (NULL); /* Not found */ |
262 | } |
263 | |
264 | |
265 | /****************************************************************************** |
266 | * |
267 | * FUNCTION: AcpiNsRepair_ALR |
268 | * |
269 | * PARAMETERS: Info - Method execution information block |
270 | * ReturnObjectPtr - Pointer to the object returned from the |
271 | * evaluation of a method or object |
272 | * |
273 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
274 | * |
275 | * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list |
276 | * ascending by the ambient illuminance values. |
277 | * |
278 | *****************************************************************************/ |
279 | |
280 | static ACPI_STATUS |
281 | AcpiNsRepair_ALR ( |
282 | ACPI_EVALUATE_INFO *Info, |
283 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
284 | { |
285 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
286 | ACPI_STATUS Status; |
287 | |
288 | |
289 | Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 2, 1, |
290 | ACPI_SORT_ASCENDING, "AmbientIlluminance" ); |
291 | |
292 | return (Status); |
293 | } |
294 | |
295 | |
296 | /****************************************************************************** |
297 | * |
298 | * FUNCTION: AcpiNsRepair_FDE |
299 | * |
300 | * PARAMETERS: Info - Method execution information block |
301 | * ReturnObjectPtr - Pointer to the object returned from the |
302 | * evaluation of a method or object |
303 | * |
304 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
305 | * |
306 | * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return |
307 | * value is a Buffer of 5 DWORDs. This function repairs a common |
308 | * problem where the return value is a Buffer of BYTEs, not |
309 | * DWORDs. |
310 | * |
311 | *****************************************************************************/ |
312 | |
313 | static ACPI_STATUS |
314 | AcpiNsRepair_FDE ( |
315 | ACPI_EVALUATE_INFO *Info, |
316 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
317 | { |
318 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
319 | ACPI_OPERAND_OBJECT *BufferObject; |
320 | UINT8 *ByteBuffer; |
321 | UINT32 *DwordBuffer; |
322 | UINT32 i; |
323 | |
324 | |
325 | ACPI_FUNCTION_NAME (NsRepair_FDE); |
326 | |
327 | |
328 | switch (ReturnObject->Common.Type) |
329 | { |
330 | case ACPI_TYPE_BUFFER: |
331 | |
332 | /* This is the expected type. Length should be (at least) 5 DWORDs */ |
333 | |
334 | if (ReturnObject->Buffer.Length >= ACPI_FDE_DWORD_BUFFER_SIZE) |
335 | { |
336 | return (AE_OK); |
337 | } |
338 | |
339 | /* We can only repair if we have exactly 5 BYTEs */ |
340 | |
341 | if (ReturnObject->Buffer.Length != ACPI_FDE_BYTE_BUFFER_SIZE) |
342 | { |
343 | ACPI_WARN_PREDEFINED ((AE_INFO, |
344 | Info->FullPathname, Info->NodeFlags, |
345 | "Incorrect return buffer length %u, expected %u" , |
346 | ReturnObject->Buffer.Length, ACPI_FDE_DWORD_BUFFER_SIZE)); |
347 | |
348 | return (AE_AML_OPERAND_TYPE); |
349 | } |
350 | |
351 | /* Create the new (larger) buffer object */ |
352 | |
353 | BufferObject = AcpiUtCreateBufferObject ( |
354 | ACPI_FDE_DWORD_BUFFER_SIZE); |
355 | if (!BufferObject) |
356 | { |
357 | return (AE_NO_MEMORY); |
358 | } |
359 | |
360 | /* Expand each byte to a DWORD */ |
361 | |
362 | ByteBuffer = ReturnObject->Buffer.Pointer; |
363 | DwordBuffer = ACPI_CAST_PTR (UINT32, |
364 | BufferObject->Buffer.Pointer); |
365 | |
366 | for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) |
367 | { |
368 | *DwordBuffer = (UINT32) *ByteBuffer; |
369 | DwordBuffer++; |
370 | ByteBuffer++; |
371 | } |
372 | |
373 | ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
374 | "%s Expanded Byte Buffer to expected DWord Buffer\n" , |
375 | Info->FullPathname)); |
376 | break; |
377 | |
378 | default: |
379 | |
380 | return (AE_AML_OPERAND_TYPE); |
381 | } |
382 | |
383 | /* Delete the original return object, return the new buffer object */ |
384 | |
385 | AcpiUtRemoveReference (ReturnObject); |
386 | *ReturnObjectPtr = BufferObject; |
387 | |
388 | Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; |
389 | return (AE_OK); |
390 | } |
391 | |
392 | |
393 | /****************************************************************************** |
394 | * |
395 | * FUNCTION: AcpiNsRepair_CID |
396 | * |
397 | * PARAMETERS: Info - Method execution information block |
398 | * ReturnObjectPtr - Pointer to the object returned from the |
399 | * evaluation of a method or object |
400 | * |
401 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
402 | * |
403 | * DESCRIPTION: Repair for the _CID object. If a string, ensure that all |
404 | * letters are uppercase and that there is no leading asterisk. |
405 | * If a Package, ensure same for all string elements. |
406 | * |
407 | *****************************************************************************/ |
408 | |
409 | static ACPI_STATUS |
410 | AcpiNsRepair_CID ( |
411 | ACPI_EVALUATE_INFO *Info, |
412 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
413 | { |
414 | ACPI_STATUS Status; |
415 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
416 | ACPI_OPERAND_OBJECT **ElementPtr; |
417 | ACPI_OPERAND_OBJECT *OriginalElement; |
418 | UINT16 OriginalRefCount; |
419 | UINT32 i; |
420 | |
421 | |
422 | /* Check for _CID as a simple string */ |
423 | |
424 | if (ReturnObject->Common.Type == ACPI_TYPE_STRING) |
425 | { |
426 | Status = AcpiNsRepair_HID (Info, ReturnObjectPtr); |
427 | return (Status); |
428 | } |
429 | |
430 | /* Exit if not a Package */ |
431 | |
432 | if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) |
433 | { |
434 | return (AE_OK); |
435 | } |
436 | |
437 | /* Examine each element of the _CID package */ |
438 | |
439 | ElementPtr = ReturnObject->Package.Elements; |
440 | for (i = 0; i < ReturnObject->Package.Count; i++) |
441 | { |
442 | OriginalElement = *ElementPtr; |
443 | OriginalRefCount = OriginalElement->Common.ReferenceCount; |
444 | |
445 | Status = AcpiNsRepair_HID (Info, ElementPtr); |
446 | if (ACPI_FAILURE (Status)) |
447 | { |
448 | return (Status); |
449 | } |
450 | |
451 | /* Take care with reference counts */ |
452 | |
453 | if (OriginalElement != *ElementPtr) |
454 | { |
455 | /* Element was replaced */ |
456 | |
457 | (*ElementPtr)->Common.ReferenceCount = |
458 | OriginalRefCount; |
459 | |
460 | AcpiUtRemoveReference (OriginalElement); |
461 | } |
462 | |
463 | ElementPtr++; |
464 | } |
465 | |
466 | return (AE_OK); |
467 | } |
468 | |
469 | |
470 | /****************************************************************************** |
471 | * |
472 | * FUNCTION: AcpiNsRepair_CST |
473 | * |
474 | * PARAMETERS: Info - Method execution information block |
475 | * ReturnObjectPtr - Pointer to the object returned from the |
476 | * evaluation of a method or object |
477 | * |
478 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
479 | * |
480 | * DESCRIPTION: Repair for the _CST object: |
481 | * 1. Sort the list ascending by C state type |
482 | * 2. Ensure type cannot be zero |
483 | * 3. A subpackage count of zero means _CST is meaningless |
484 | * 4. Count must match the number of C state subpackages |
485 | * |
486 | *****************************************************************************/ |
487 | |
488 | static ACPI_STATUS |
489 | AcpiNsRepair_CST ( |
490 | ACPI_EVALUATE_INFO *Info, |
491 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
492 | { |
493 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
494 | ACPI_OPERAND_OBJECT **OuterElements; |
495 | UINT32 OuterElementCount; |
496 | ACPI_OPERAND_OBJECT *ObjDesc; |
497 | ACPI_STATUS Status; |
498 | BOOLEAN Removing; |
499 | UINT32 i; |
500 | |
501 | |
502 | ACPI_FUNCTION_NAME (NsRepair_CST); |
503 | |
504 | |
505 | /* |
506 | * Check if the C-state type values are proportional. |
507 | */ |
508 | OuterElementCount = ReturnObject->Package.Count - 1; |
509 | i = 0; |
510 | while (i < OuterElementCount) |
511 | { |
512 | OuterElements = &ReturnObject->Package.Elements[i + 1]; |
513 | Removing = FALSE; |
514 | |
515 | if ((*OuterElements)->Package.Count == 0) |
516 | { |
517 | ACPI_WARN_PREDEFINED ((AE_INFO, |
518 | Info->FullPathname, Info->NodeFlags, |
519 | "SubPackage[%u] - removing entry due to zero count" , i)); |
520 | Removing = TRUE; |
521 | goto RemoveElement; |
522 | } |
523 | |
524 | ObjDesc = (*OuterElements)->Package.Elements[1]; /* Index1 = Type */ |
525 | if ((UINT32) ObjDesc->Integer.Value == 0) |
526 | { |
527 | ACPI_WARN_PREDEFINED ((AE_INFO, |
528 | Info->FullPathname, Info->NodeFlags, |
529 | "SubPackage[%u] - removing entry due to invalid Type(0)" , i)); |
530 | Removing = TRUE; |
531 | } |
532 | |
533 | RemoveElement: |
534 | if (Removing) |
535 | { |
536 | AcpiNsRemoveElement (ReturnObject, i + 1); |
537 | OuterElementCount--; |
538 | } |
539 | else |
540 | { |
541 | i++; |
542 | } |
543 | } |
544 | |
545 | /* Update top-level package count, Type "Integer" checked elsewhere */ |
546 | |
547 | ObjDesc = ReturnObject->Package.Elements[0]; |
548 | ObjDesc->Integer.Value = OuterElementCount; |
549 | |
550 | /* |
551 | * Entries (subpackages) in the _CST Package must be sorted by the |
552 | * C-state type, in ascending order. |
553 | */ |
554 | Status = AcpiNsCheckSortedList (Info, ReturnObject, 1, 4, 1, |
555 | ACPI_SORT_ASCENDING, "C-State Type" ); |
556 | if (ACPI_FAILURE (Status)) |
557 | { |
558 | return (Status); |
559 | } |
560 | |
561 | return (AE_OK); |
562 | } |
563 | |
564 | |
565 | /****************************************************************************** |
566 | * |
567 | * FUNCTION: AcpiNsRepair_HID |
568 | * |
569 | * PARAMETERS: Info - Method execution information block |
570 | * ReturnObjectPtr - Pointer to the object returned from the |
571 | * evaluation of a method or object |
572 | * |
573 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
574 | * |
575 | * DESCRIPTION: Repair for the _HID object. If a string, ensure that all |
576 | * letters are uppercase and that there is no leading asterisk. |
577 | * |
578 | *****************************************************************************/ |
579 | |
580 | static ACPI_STATUS |
581 | AcpiNsRepair_HID ( |
582 | ACPI_EVALUATE_INFO *Info, |
583 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
584 | { |
585 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
586 | ACPI_OPERAND_OBJECT *NewString; |
587 | char *Source; |
588 | char *Dest; |
589 | |
590 | |
591 | ACPI_FUNCTION_NAME (NsRepair_HID); |
592 | |
593 | |
594 | /* We only care about string _HID objects (not integers) */ |
595 | |
596 | if (ReturnObject->Common.Type != ACPI_TYPE_STRING) |
597 | { |
598 | return (AE_OK); |
599 | } |
600 | |
601 | if (ReturnObject->String.Length == 0) |
602 | { |
603 | ACPI_WARN_PREDEFINED ((AE_INFO, |
604 | Info->FullPathname, Info->NodeFlags, |
605 | "Invalid zero-length _HID or _CID string" )); |
606 | |
607 | /* Return AE_OK anyway, let driver handle it */ |
608 | |
609 | Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; |
610 | return (AE_OK); |
611 | } |
612 | |
613 | /* It is simplest to always create a new string object */ |
614 | |
615 | NewString = AcpiUtCreateStringObject (ReturnObject->String.Length); |
616 | if (!NewString) |
617 | { |
618 | return (AE_NO_MEMORY); |
619 | } |
620 | |
621 | /* |
622 | * Remove a leading asterisk if present. For some unknown reason, there |
623 | * are many machines in the field that contains IDs like this. |
624 | * |
625 | * Examples: "*PNP0C03", "*ACPI0003" |
626 | */ |
627 | Source = ReturnObject->String.Pointer; |
628 | if (*Source == '*') |
629 | { |
630 | Source++; |
631 | NewString->String.Length--; |
632 | |
633 | ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
634 | "%s: Removed invalid leading asterisk\n" , Info->FullPathname)); |
635 | } |
636 | |
637 | /* |
638 | * Copy and uppercase the string. From the ACPI 5.0 specification: |
639 | * |
640 | * A valid PNP ID must be of the form "AAA####" where A is an uppercase |
641 | * letter and # is a hex digit. A valid ACPI ID must be of the form |
642 | * "NNNN####" where N is an uppercase letter or decimal digit, and |
643 | * # is a hex digit. |
644 | */ |
645 | for (Dest = NewString->String.Pointer; *Source; Dest++, Source++) |
646 | { |
647 | *Dest = (char) toupper ((int) *Source); |
648 | } |
649 | |
650 | AcpiUtRemoveReference (ReturnObject); |
651 | *ReturnObjectPtr = NewString; |
652 | return (AE_OK); |
653 | } |
654 | |
655 | |
656 | /****************************************************************************** |
657 | * |
658 | * FUNCTION: AcpiNsRepair_PRT |
659 | * |
660 | * PARAMETERS: Info - Method execution information block |
661 | * ReturnObjectPtr - Pointer to the object returned from the |
662 | * evaluation of a method or object |
663 | * |
664 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
665 | * |
666 | * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed |
667 | * SourceName and SourceIndex field, a common BIOS bug. |
668 | * |
669 | *****************************************************************************/ |
670 | |
671 | static ACPI_STATUS |
672 | AcpiNsRepair_PRT ( |
673 | ACPI_EVALUATE_INFO *Info, |
674 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
675 | { |
676 | ACPI_OPERAND_OBJECT *PackageObject = *ReturnObjectPtr; |
677 | ACPI_OPERAND_OBJECT **TopObjectList; |
678 | ACPI_OPERAND_OBJECT **SubObjectList; |
679 | ACPI_OPERAND_OBJECT *ObjDesc; |
680 | ACPI_OPERAND_OBJECT *SubPackage; |
681 | UINT32 ElementCount; |
682 | UINT32 Index; |
683 | |
684 | |
685 | /* Each element in the _PRT package is a subpackage */ |
686 | |
687 | TopObjectList = PackageObject->Package.Elements; |
688 | ElementCount = PackageObject->Package.Count; |
689 | |
690 | /* Examine each subpackage */ |
691 | |
692 | for (Index = 0; Index < ElementCount; Index++, TopObjectList++) |
693 | { |
694 | SubPackage = *TopObjectList; |
695 | SubObjectList = SubPackage->Package.Elements; |
696 | |
697 | /* Check for minimum required element count */ |
698 | |
699 | if (SubPackage->Package.Count < 4) |
700 | { |
701 | continue; |
702 | } |
703 | |
704 | /* |
705 | * If the BIOS has erroneously reversed the _PRT SourceName (index 2) |
706 | * and the SourceIndex (index 3), fix it. _PRT is important enough to |
707 | * workaround this BIOS error. This also provides compatibility with |
708 | * other ACPI implementations. |
709 | */ |
710 | ObjDesc = SubObjectList[3]; |
711 | if (!ObjDesc || (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)) |
712 | { |
713 | SubObjectList[3] = SubObjectList[2]; |
714 | SubObjectList[2] = ObjDesc; |
715 | Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; |
716 | |
717 | ACPI_WARN_PREDEFINED ((AE_INFO, |
718 | Info->FullPathname, Info->NodeFlags, |
719 | "PRT[%X]: Fixed reversed SourceName and SourceIndex" , |
720 | Index)); |
721 | } |
722 | } |
723 | |
724 | return (AE_OK); |
725 | } |
726 | |
727 | |
728 | /****************************************************************************** |
729 | * |
730 | * FUNCTION: AcpiNsRepair_PSS |
731 | * |
732 | * PARAMETERS: Info - Method execution information block |
733 | * ReturnObjectPtr - Pointer to the object returned from the |
734 | * evaluation of a method or object |
735 | * |
736 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
737 | * |
738 | * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list |
739 | * by the CPU frequencies. Check that the power dissipation values |
740 | * are all proportional to CPU frequency (i.e., sorting by |
741 | * frequency should be the same as sorting by power.) |
742 | * |
743 | *****************************************************************************/ |
744 | |
745 | static ACPI_STATUS |
746 | AcpiNsRepair_PSS ( |
747 | ACPI_EVALUATE_INFO *Info, |
748 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
749 | { |
750 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
751 | ACPI_OPERAND_OBJECT **OuterElements; |
752 | UINT32 OuterElementCount; |
753 | ACPI_OPERAND_OBJECT **Elements; |
754 | ACPI_OPERAND_OBJECT *ObjDesc; |
755 | UINT32 PreviousValue; |
756 | ACPI_STATUS Status; |
757 | UINT32 i; |
758 | |
759 | |
760 | /* |
761 | * Entries (subpackages) in the _PSS Package must be sorted by power |
762 | * dissipation, in descending order. If it appears that the list is |
763 | * incorrectly sorted, sort it. We sort by CpuFrequency, since this |
764 | * should be proportional to the power. |
765 | */ |
766 | Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 6, 0, |
767 | ACPI_SORT_DESCENDING, "CpuFrequency" ); |
768 | if (ACPI_FAILURE (Status)) |
769 | { |
770 | return (Status); |
771 | } |
772 | |
773 | /* |
774 | * We now know the list is correctly sorted by CPU frequency. Check if |
775 | * the power dissipation values are proportional. |
776 | */ |
777 | PreviousValue = ACPI_UINT32_MAX; |
778 | OuterElements = ReturnObject->Package.Elements; |
779 | OuterElementCount = ReturnObject->Package.Count; |
780 | |
781 | for (i = 0; i < OuterElementCount; i++) |
782 | { |
783 | Elements = (*OuterElements)->Package.Elements; |
784 | ObjDesc = Elements[1]; /* Index1 = PowerDissipation */ |
785 | |
786 | if ((UINT32) ObjDesc->Integer.Value > PreviousValue) |
787 | { |
788 | ACPI_WARN_PREDEFINED ((AE_INFO, |
789 | Info->FullPathname, Info->NodeFlags, |
790 | "SubPackage[%u,%u] - suspicious power dissipation values" , |
791 | i-1, i)); |
792 | } |
793 | |
794 | PreviousValue = (UINT32) ObjDesc->Integer.Value; |
795 | OuterElements++; |
796 | } |
797 | |
798 | return (AE_OK); |
799 | } |
800 | |
801 | |
802 | /****************************************************************************** |
803 | * |
804 | * FUNCTION: AcpiNsRepair_TSS |
805 | * |
806 | * PARAMETERS: Info - Method execution information block |
807 | * ReturnObjectPtr - Pointer to the object returned from the |
808 | * evaluation of a method or object |
809 | * |
810 | * RETURN: Status. AE_OK if object is OK or was repaired successfully |
811 | * |
812 | * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list |
813 | * descending by the power dissipation values. |
814 | * |
815 | *****************************************************************************/ |
816 | |
817 | static ACPI_STATUS |
818 | AcpiNsRepair_TSS ( |
819 | ACPI_EVALUATE_INFO *Info, |
820 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
821 | { |
822 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
823 | ACPI_STATUS Status; |
824 | ACPI_NAMESPACE_NODE *Node; |
825 | |
826 | |
827 | /* |
828 | * We can only sort the _TSS return package if there is no _PSS in the |
829 | * same scope. This is because if _PSS is present, the ACPI specification |
830 | * dictates that the _TSS Power Dissipation field is to be ignored, and |
831 | * therefore some BIOSs leave garbage values in the _TSS Power field(s). |
832 | * In this case, it is best to just return the _TSS package as-is. |
833 | * (May, 2011) |
834 | */ |
835 | Status = AcpiNsGetNode (Info->Node, "^_PSS" , |
836 | ACPI_NS_NO_UPSEARCH, &Node); |
837 | if (ACPI_SUCCESS (Status)) |
838 | { |
839 | return (AE_OK); |
840 | } |
841 | |
842 | Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 5, 1, |
843 | ACPI_SORT_DESCENDING, "PowerDissipation" ); |
844 | |
845 | return (Status); |
846 | } |
847 | |
848 | |
849 | /****************************************************************************** |
850 | * |
851 | * FUNCTION: AcpiNsCheckSortedList |
852 | * |
853 | * PARAMETERS: Info - Method execution information block |
854 | * ReturnObject - Pointer to the top-level returned object |
855 | * StartIndex - Index of the first subpackage |
856 | * ExpectedCount - Minimum length of each subpackage |
857 | * SortIndex - Subpackage entry to sort on |
858 | * SortDirection - Ascending or descending |
859 | * SortKeyName - Name of the SortIndex field |
860 | * |
861 | * RETURN: Status. AE_OK if the list is valid and is sorted correctly or |
862 | * has been repaired by sorting the list. |
863 | * |
864 | * DESCRIPTION: Check if the package list is valid and sorted correctly by the |
865 | * SortIndex. If not, then sort the list. |
866 | * |
867 | *****************************************************************************/ |
868 | |
869 | static ACPI_STATUS |
870 | AcpiNsCheckSortedList ( |
871 | ACPI_EVALUATE_INFO *Info, |
872 | ACPI_OPERAND_OBJECT *ReturnObject, |
873 | UINT32 StartIndex, |
874 | UINT32 ExpectedCount, |
875 | UINT32 SortIndex, |
876 | UINT8 SortDirection, |
877 | const char *SortKeyName) |
878 | { |
879 | UINT32 OuterElementCount; |
880 | ACPI_OPERAND_OBJECT **OuterElements; |
881 | ACPI_OPERAND_OBJECT **Elements; |
882 | ACPI_OPERAND_OBJECT *ObjDesc; |
883 | UINT32 i; |
884 | UINT32 PreviousValue; |
885 | |
886 | |
887 | ACPI_FUNCTION_NAME (NsCheckSortedList); |
888 | |
889 | |
890 | /* The top-level object must be a package */ |
891 | |
892 | if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE) |
893 | { |
894 | return (AE_AML_OPERAND_TYPE); |
895 | } |
896 | |
897 | /* |
898 | * NOTE: assumes list of subpackages contains no NULL elements. |
899 | * Any NULL elements should have been removed by earlier call |
900 | * to AcpiNsRemoveNullElements. |
901 | */ |
902 | OuterElementCount = ReturnObject->Package.Count; |
903 | if (!OuterElementCount || StartIndex >= OuterElementCount) |
904 | { |
905 | return (AE_AML_PACKAGE_LIMIT); |
906 | } |
907 | |
908 | OuterElements = &ReturnObject->Package.Elements[StartIndex]; |
909 | OuterElementCount -= StartIndex; |
910 | |
911 | PreviousValue = 0; |
912 | if (SortDirection == ACPI_SORT_DESCENDING) |
913 | { |
914 | PreviousValue = ACPI_UINT32_MAX; |
915 | } |
916 | |
917 | /* Examine each subpackage */ |
918 | |
919 | for (i = 0; i < OuterElementCount; i++) |
920 | { |
921 | /* Each element of the top-level package must also be a package */ |
922 | |
923 | if ((*OuterElements)->Common.Type != ACPI_TYPE_PACKAGE) |
924 | { |
925 | return (AE_AML_OPERAND_TYPE); |
926 | } |
927 | |
928 | /* Each subpackage must have the minimum length */ |
929 | |
930 | if ((*OuterElements)->Package.Count < ExpectedCount) |
931 | { |
932 | return (AE_AML_PACKAGE_LIMIT); |
933 | } |
934 | |
935 | Elements = (*OuterElements)->Package.Elements; |
936 | ObjDesc = Elements[SortIndex]; |
937 | |
938 | if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER) |
939 | { |
940 | return (AE_AML_OPERAND_TYPE); |
941 | } |
942 | |
943 | /* |
944 | * The list must be sorted in the specified order. If we detect a |
945 | * discrepancy, sort the entire list. |
946 | */ |
947 | if (((SortDirection == ACPI_SORT_ASCENDING) && |
948 | (ObjDesc->Integer.Value < PreviousValue)) || |
949 | ((SortDirection == ACPI_SORT_DESCENDING) && |
950 | (ObjDesc->Integer.Value > PreviousValue))) |
951 | { |
952 | AcpiNsSortList (&ReturnObject->Package.Elements[StartIndex], |
953 | OuterElementCount, SortIndex, SortDirection); |
954 | |
955 | Info->ReturnFlags |= ACPI_OBJECT_REPAIRED; |
956 | |
957 | ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
958 | "%s: Repaired unsorted list - now sorted by %s\n" , |
959 | Info->FullPathname, SortKeyName)); |
960 | return (AE_OK); |
961 | } |
962 | |
963 | PreviousValue = (UINT32) ObjDesc->Integer.Value; |
964 | OuterElements++; |
965 | } |
966 | |
967 | return (AE_OK); |
968 | } |
969 | |
970 | |
971 | /****************************************************************************** |
972 | * |
973 | * FUNCTION: AcpiNsSortList |
974 | * |
975 | * PARAMETERS: Elements - Package object element list |
976 | * Count - Element count for above |
977 | * Index - Sort by which package element |
978 | * SortDirection - Ascending or Descending sort |
979 | * |
980 | * RETURN: None |
981 | * |
982 | * DESCRIPTION: Sort the objects that are in a package element list. |
983 | * |
984 | * NOTE: Assumes that all NULL elements have been removed from the package, |
985 | * and that all elements have been verified to be of type Integer. |
986 | * |
987 | *****************************************************************************/ |
988 | |
989 | static void |
990 | AcpiNsSortList ( |
991 | ACPI_OPERAND_OBJECT **Elements, |
992 | UINT32 Count, |
993 | UINT32 Index, |
994 | UINT8 SortDirection) |
995 | { |
996 | ACPI_OPERAND_OBJECT *ObjDesc1; |
997 | ACPI_OPERAND_OBJECT *ObjDesc2; |
998 | ACPI_OPERAND_OBJECT *TempObj; |
999 | UINT32 i; |
1000 | UINT32 j; |
1001 | |
1002 | |
1003 | /* Simple bubble sort */ |
1004 | |
1005 | for (i = 1; i < Count; i++) |
1006 | { |
1007 | for (j = (Count - 1); j >= i; j--) |
1008 | { |
1009 | ObjDesc1 = Elements[j-1]->Package.Elements[Index]; |
1010 | ObjDesc2 = Elements[j]->Package.Elements[Index]; |
1011 | |
1012 | if (((SortDirection == ACPI_SORT_ASCENDING) && |
1013 | (ObjDesc1->Integer.Value > ObjDesc2->Integer.Value)) || |
1014 | |
1015 | ((SortDirection == ACPI_SORT_DESCENDING) && |
1016 | (ObjDesc1->Integer.Value < ObjDesc2->Integer.Value))) |
1017 | { |
1018 | TempObj = Elements[j-1]; |
1019 | Elements[j-1] = Elements[j]; |
1020 | Elements[j] = TempObj; |
1021 | } |
1022 | } |
1023 | } |
1024 | } |
1025 | |
1026 | |
1027 | /****************************************************************************** |
1028 | * |
1029 | * FUNCTION: AcpiNsRemoveElement |
1030 | * |
1031 | * PARAMETERS: ObjDesc - Package object element list |
1032 | * Index - Index of element to remove |
1033 | * |
1034 | * RETURN: None |
1035 | * |
1036 | * DESCRIPTION: Remove the requested element of a package and delete it. |
1037 | * |
1038 | *****************************************************************************/ |
1039 | |
1040 | static void |
1041 | AcpiNsRemoveElement ( |
1042 | ACPI_OPERAND_OBJECT *ObjDesc, |
1043 | UINT32 Index) |
1044 | { |
1045 | ACPI_OPERAND_OBJECT **Source; |
1046 | ACPI_OPERAND_OBJECT **Dest; |
1047 | UINT32 Count; |
1048 | UINT32 NewCount; |
1049 | UINT32 i; |
1050 | |
1051 | |
1052 | ACPI_FUNCTION_NAME (NsRemoveElement); |
1053 | |
1054 | |
1055 | Count = ObjDesc->Package.Count; |
1056 | NewCount = Count - 1; |
1057 | |
1058 | Source = ObjDesc->Package.Elements; |
1059 | Dest = Source; |
1060 | |
1061 | /* Examine all elements of the package object, remove matched index */ |
1062 | |
1063 | for (i = 0; i < Count; i++) |
1064 | { |
1065 | if (i == Index) |
1066 | { |
1067 | AcpiUtRemoveReference (*Source); /* Remove one ref for being in pkg */ |
1068 | AcpiUtRemoveReference (*Source); |
1069 | } |
1070 | else |
1071 | { |
1072 | *Dest = *Source; |
1073 | Dest++; |
1074 | } |
1075 | |
1076 | Source++; |
1077 | } |
1078 | |
1079 | /* NULL terminate list and update the package count */ |
1080 | |
1081 | *Dest = NULL; |
1082 | ObjDesc->Package.Count = NewCount; |
1083 | } |
1084 | |