1 /******************************************************************************
2 *
3 * Module Name: nsrepair2 - Repair for objects returned by specific
4 * predefined methods
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2013, 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 #define __NSREPAIR2_C__
46
47 #include "acpi.h"
48 #include "accommon.h"
49 #include "acnamesp.h"
50
51 #define _COMPONENT ACPI_NAMESPACE
52 ACPI_MODULE_NAME ("nsrepair2")
53
54
55 /*
56 * Information structure and handler for ACPI predefined names that can
57 * be repaired on a per-name basis.
58 */
59 typedef
60 ACPI_STATUS (*ACPI_REPAIR_FUNCTION) (
61 ACPI_EVALUATE_INFO *Info,
62 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
63
64 typedef struct acpi_repair_info
65 {
66 char Name[ACPI_NAME_SIZE];
67 ACPI_REPAIR_FUNCTION RepairFunction;
68
69 } ACPI_REPAIR_INFO;
70
71
72 /* Local prototypes */
73
74 static const ACPI_REPAIR_INFO *
75 AcpiNsMatchComplexRepair (
76 ACPI_NAMESPACE_NODE *Node);
77
78 static ACPI_STATUS
79 AcpiNsRepair_ALR (
80 ACPI_EVALUATE_INFO *Info,
81 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
82
83 static ACPI_STATUS
84 AcpiNsRepair_CID (
85 ACPI_EVALUATE_INFO *Info,
86 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
87
88 static ACPI_STATUS
89 AcpiNsRepair_CST (
90 ACPI_EVALUATE_INFO *Info,
91 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
92
93 static ACPI_STATUS
94 AcpiNsRepair_FDE (
95 ACPI_EVALUATE_INFO *Info,
96 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
97
98 static ACPI_STATUS
99 AcpiNsRepair_HID (
100 ACPI_EVALUATE_INFO *Info,
101 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
102
103 static ACPI_STATUS
104 AcpiNsRepair_PRT (
105 ACPI_EVALUATE_INFO *Info,
106 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
107
108 static ACPI_STATUS
109 AcpiNsRepair_PSS (
110 ACPI_EVALUATE_INFO *Info,
111 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
112
113 static ACPI_STATUS
114 AcpiNsRepair_TSS (
115 ACPI_EVALUATE_INFO *Info,
116 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
117
118 static ACPI_STATUS
119 AcpiNsCheckSortedList (
120 ACPI_EVALUATE_INFO *Info,
121 ACPI_OPERAND_OBJECT *ReturnObject,
122 UINT32 StartIndex,
123 UINT32 ExpectedCount,
124 UINT32 SortIndex,
125 UINT8 SortDirection,
126 char *SortKeyName);
127
128 /* Values for SortDirection above */
129
130 #define ACPI_SORT_ASCENDING 0
131 #define ACPI_SORT_DESCENDING 1
132
133 static void
134 AcpiNsRemoveElement (
135 ACPI_OPERAND_OBJECT *ObjDesc,
136 UINT32 Index);
137
138 static void
139 AcpiNsSortList (
140 ACPI_OPERAND_OBJECT **Elements,
141 UINT32 Count,
142 UINT32 Index,
143 UINT8 SortDirection);
144
145
146 /*
147 * This table contains the names of the predefined methods for which we can
148 * perform more complex repairs.
149 *
150 * As necessary:
151 *
152 * _ALR: Sort the list ascending by AmbientIlluminance
153 * _CID: Strings: uppercase all, remove any leading asterisk
154 * _CST: Sort the list ascending by C state type
155 * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs
156 * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
157 * _HID: Strings: uppercase all, remove any leading asterisk
158 * _PRT: Fix reversed SourceName and SourceIndex
159 * _PSS: Sort the list descending by Power
160 * _TSS: Sort the list descending by Power
161 *
162 * Names that must be packages, but cannot be sorted:
163 *
164 * _BCL: Values are tied to the Package index where they appear, and cannot
165 * be moved or sorted. These index values are used for _BQC and _BCM.
166 * However, we can fix the case where a buffer is returned, by converting
167 * it to a Package of integers.
168 */
169 static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] =
170 {
171 {"_ALR", AcpiNsRepair_ALR},
172 {"_CID", AcpiNsRepair_CID},
173 {"_CST", AcpiNsRepair_CST},
174 {"_FDE", AcpiNsRepair_FDE},
175 {"_GTM", AcpiNsRepair_FDE}, /* _GTM has same repair as _FDE */
176 {"_HID", AcpiNsRepair_HID},
177 {"_PRT", AcpiNsRepair_PRT},
178 {"_PSS", AcpiNsRepair_PSS},
179 {"_TSS", AcpiNsRepair_TSS},
180 {{0,0,0,0}, NULL} /* Table terminator */
181 };
182
183
184 #define ACPI_FDE_FIELD_COUNT 5
185 #define ACPI_FDE_BYTE_BUFFER_SIZE 5
186 #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (UINT32))
187
188
189 /******************************************************************************
190 *
191 * FUNCTION: AcpiNsComplexRepairs
192 *
193 * PARAMETERS: Info - Method execution information block
194 * Node - Namespace node for the method/object
195 * ValidateStatus - Original status of earlier validation
196 * ReturnObjectPtr - Pointer to the object returned from the
197 * evaluation of a method or object
198 *
199 * RETURN: Status. AE_OK if repair was successful. If name is not
200 * matched, ValidateStatus is returned.
201 *
202 * DESCRIPTION: Attempt to repair/convert a return object of a type that was
203 * not expected.
204 *
205 *****************************************************************************/
206
207 ACPI_STATUS
208 AcpiNsComplexRepairs (
209 ACPI_EVALUATE_INFO *Info,
210 ACPI_NAMESPACE_NODE *Node,
211 ACPI_STATUS ValidateStatus,
212 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
213 {
214 const ACPI_REPAIR_INFO *Predefined;
215 ACPI_STATUS Status;
216
217
218 /* Check if this name is in the list of repairable names */
219
220 Predefined = AcpiNsMatchComplexRepair (Node);
221 if (!Predefined)
222 {
223 return (ValidateStatus);
224 }
225
226 Status = Predefined->RepairFunction (Info, ReturnObjectPtr);
227 return (Status);
228 }
229
230
231 /******************************************************************************
232 *
233 * FUNCTION: AcpiNsMatchComplexRepair
234 *
235 * PARAMETERS: Node - Namespace node for the method/object
236 *
237 * RETURN: Pointer to entry in repair table. NULL indicates not found.
238 *
239 * DESCRIPTION: Check an object name against the repairable object list.
240 *
241 *****************************************************************************/
242
243 static const ACPI_REPAIR_INFO *
244 AcpiNsMatchComplexRepair (
245 ACPI_NAMESPACE_NODE *Node)
246 {
247 const ACPI_REPAIR_INFO *ThisName;
248
249
250 /* Search info table for a repairable predefined method/object name */
251
252 ThisName = AcpiNsRepairableNames;
253 while (ThisName->RepairFunction)
254 {
255 if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name))
256 {
257 return (ThisName);
258 }
259 ThisName++;
260 }
261
262 return (NULL); /* Not found */
263 }
264
265
266 /******************************************************************************
267 *
268 * FUNCTION: AcpiNsRepair_ALR
269 *
270 * PARAMETERS: Info - Method execution information block
271 * ReturnObjectPtr - Pointer to the object returned from the
272 * evaluation of a method or object
273 *
274 * RETURN: Status. AE_OK if object is OK or was repaired successfully
275 *
276 * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list
277 * ascending by the ambient illuminance values.
278 *
279 *****************************************************************************/
280
281 static ACPI_STATUS
282 AcpiNsRepair_ALR (
283 ACPI_EVALUATE_INFO *Info,
284 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
285 {
286 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
287 ACPI_STATUS Status;
288
289
290 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 2, 1,
291 ACPI_SORT_ASCENDING, "AmbientIlluminance");
292
293 return (Status);
294 }
295
296
297 /******************************************************************************
298 *
299 * FUNCTION: AcpiNsRepair_FDE
300 *
301 * PARAMETERS: Info - Method execution information block
302 * ReturnObjectPtr - Pointer to the object returned from the
303 * evaluation of a method or object
304 *
305 * RETURN: Status. AE_OK if object is OK or was repaired successfully
306 *
307 * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return
308 * value is a Buffer of 5 DWORDs. This function repairs a common
309 * problem where the return value is a Buffer of BYTEs, not
310 * DWORDs.
311 *
312 *****************************************************************************/
313
314 static ACPI_STATUS
315 AcpiNsRepair_FDE (
316 ACPI_EVALUATE_INFO *Info,
317 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
318 {
319 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
320 ACPI_OPERAND_OBJECT *BufferObject;
321 UINT8 *ByteBuffer;
322 UINT32 *DwordBuffer;
323 UINT32 i;
324
325
326 ACPI_FUNCTION_NAME (NsRepair_FDE);
327
328
329 switch (ReturnObject->Common.Type)
330 {
331 case ACPI_TYPE_BUFFER:
332
333 /* This is the expected type. Length should be (at least) 5 DWORDs */
334
335 if (ReturnObject->Buffer.Length >= ACPI_FDE_DWORD_BUFFER_SIZE)
336 {
337 return (AE_OK);
338 }
339
340 /* We can only repair if we have exactly 5 BYTEs */
341
342 if (ReturnObject->Buffer.Length != ACPI_FDE_BYTE_BUFFER_SIZE)
343 {
344 ACPI_WARN_PREDEFINED ((AE_INFO, 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 (ACPI_FDE_DWORD_BUFFER_SIZE);
354 if (!BufferObject)
355 {
356 return (AE_NO_MEMORY);
357 }
358
359 /* Expand each byte to a DWORD */
360
361 ByteBuffer = ReturnObject->Buffer.Pointer;
362 DwordBuffer = ACPI_CAST_PTR (UINT32, BufferObject->Buffer.Pointer);
363
364 for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++)
365 {
366 *DwordBuffer = (UINT32) *ByteBuffer;
367 DwordBuffer++;
368 ByteBuffer++;
369 }
370
371 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
372 "%s Expanded Byte Buffer to expected DWord Buffer\n",
373 Info->FullPathname));
374 break;
375
376 default:
377
378 return (AE_AML_OPERAND_TYPE);
379 }
380
381 /* Delete the original return object, return the new buffer object */
382
383 AcpiUtRemoveReference (ReturnObject);
384 *ReturnObjectPtr = BufferObject;
385
386 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
387 return (AE_OK);
388 }
389
390
391 /******************************************************************************
392 *
393 * FUNCTION: AcpiNsRepair_CID
394 *
395 * PARAMETERS: Info - Method execution information block
396 * ReturnObjectPtr - Pointer to the object returned from the
397 * evaluation of a method or object
398 *
399 * RETURN: Status. AE_OK if object is OK or was repaired successfully
400 *
401 * DESCRIPTION: Repair for the _CID object. If a string, ensure that all
402 * letters are uppercase and that there is no leading asterisk.
403 * If a Package, ensure same for all string elements.
404 *
405 *****************************************************************************/
406
407 static ACPI_STATUS
408 AcpiNsRepair_CID (
409 ACPI_EVALUATE_INFO *Info,
410 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
411 {
412 ACPI_STATUS Status;
413 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
414 ACPI_OPERAND_OBJECT **ElementPtr;
415 ACPI_OPERAND_OBJECT *OriginalElement;
416 UINT16 OriginalRefCount;
417 UINT32 i;
418
419
420 /* Check for _CID as a simple string */
421
422 if (ReturnObject->Common.Type == ACPI_TYPE_STRING)
423 {
424 Status = AcpiNsRepair_HID (Info, ReturnObjectPtr);
425 return (Status);
426 }
427
428 /* Exit if not a Package */
429
430 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE)
431 {
432 return (AE_OK);
433 }
434
435 /* Examine each element of the _CID package */
436
437 ElementPtr = ReturnObject->Package.Elements;
438 for (i = 0; i < ReturnObject->Package.Count; i++)
439 {
440 OriginalElement = *ElementPtr;
441 OriginalRefCount = OriginalElement->Common.ReferenceCount;
442
443 Status = AcpiNsRepair_HID (Info, ElementPtr);
444 if (ACPI_FAILURE (Status))
445 {
446 return (Status);
447 }
448
449 /* Take care with reference counts */
450
451 if (OriginalElement != *ElementPtr)
452 {
453 /* Element was replaced */
454
455 (*ElementPtr)->Common.ReferenceCount =
456 OriginalRefCount;
457
458 AcpiUtRemoveReference (OriginalElement);
459 }
460
461 ElementPtr++;
462 }
463
464 return (AE_OK);
465 }
466
467
468 /******************************************************************************
469 *
470 * FUNCTION: AcpiNsRepair_CST
471 *
472 * PARAMETERS: Info - Method execution information block
473 * ReturnObjectPtr - Pointer to the object returned from the
474 * evaluation of a method or object
475 *
476 * RETURN: Status. AE_OK if object is OK or was repaired successfully
477 *
478 * DESCRIPTION: Repair for the _CST object:
479 * 1. Sort the list ascending by C state type
480 * 2. Ensure type cannot be zero
481 * 3. A sub-package count of zero means _CST is meaningless
482 * 4. Count must match the number of C state sub-packages
483 *
484 *****************************************************************************/
485
486 static ACPI_STATUS
487 AcpiNsRepair_CST (
488 ACPI_EVALUATE_INFO *Info,
489 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
490 {
491 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
492 ACPI_OPERAND_OBJECT **OuterElements;
493 UINT32 OuterElementCount;
494 ACPI_OPERAND_OBJECT *ObjDesc;
495 ACPI_STATUS Status;
496 BOOLEAN Removing;
497 UINT32 i;
498
499
500 ACPI_FUNCTION_NAME (NsRepair_CST);
501
502
503 /*
504 * Check if the C-state type values are proportional.
505 */
506 OuterElementCount = ReturnObject->Package.Count - 1;
507 i = 0;
508 while (i < OuterElementCount)
509 {
510 OuterElements = &ReturnObject->Package.Elements[i + 1];
511 Removing = FALSE;
512
513 if ((*OuterElements)->Package.Count == 0)
514 {
515 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
516 "SubPackage[%u] - removing entry due to zero count", i));
517 Removing = TRUE;
518 goto RemoveElement;
519 }
520
521 ObjDesc = (*OuterElements)->Package.Elements[1]; /* Index1 = Type */
522 if ((UINT32) ObjDesc->Integer.Value == 0)
523 {
524 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
525 "SubPackage[%u] - removing entry due to invalid Type(0)", i));
526 Removing = TRUE;
527 }
528
529 RemoveElement:
530 if (Removing)
531 {
532 AcpiNsRemoveElement (ReturnObject, i + 1);
533 OuterElementCount--;
534 }
535 else
536 {
537 i++;
538 }
539 }
540
541 /* Update top-level package count, Type "Integer" checked elsewhere */
542
543 ObjDesc = ReturnObject->Package.Elements[0];
544 ObjDesc->Integer.Value = OuterElementCount;
545
546 /*
547 * Entries (subpackages) in the _CST Package must be sorted by the
548 * C-state type, in ascending order.
549 */
550 Status = AcpiNsCheckSortedList (Info, ReturnObject, 1, 4, 1,
551 ACPI_SORT_ASCENDING, "C-State Type");
552 if (ACPI_FAILURE (Status))
553 {
554 return (Status);
555 }
556
557 return (AE_OK);
558 }
559
560
561 /******************************************************************************
562 *
563 * FUNCTION: AcpiNsRepair_HID
564 *
565 * PARAMETERS: Info - Method execution information block
566 * ReturnObjectPtr - 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 *
571 * DESCRIPTION: Repair for the _HID object. If a string, ensure that all
572 * letters are uppercase and that there is no leading asterisk.
573 *
574 *****************************************************************************/
575
576 static ACPI_STATUS
577 AcpiNsRepair_HID (
578 ACPI_EVALUATE_INFO *Info,
579 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
580 {
581 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
582 ACPI_OPERAND_OBJECT *NewString;
583 char *Source;
584 char *Dest;
585
586
587 ACPI_FUNCTION_NAME (NsRepair_HID);
588
589
590 /* We only care about string _HID objects (not integers) */
591
592 if (ReturnObject->Common.Type != ACPI_TYPE_STRING)
593 {
594 return (AE_OK);
595 }
596
597 if (ReturnObject->String.Length == 0)
598 {
599 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
600 "Invalid zero-length _HID or _CID string"));
601
602 /* Return AE_OK anyway, let driver handle it */
603
604 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
605 return (AE_OK);
606 }
607
608 /* It is simplest to always create a new string object */
609
610 NewString = AcpiUtCreateStringObject (ReturnObject->String.Length);
611 if (!NewString)
612 {
613 return (AE_NO_MEMORY);
614 }
615
616 /*
617 * Remove a leading asterisk if present. For some unknown reason, there
618 * are many machines in the field that contains IDs like this.
619 *
620 * Examples: "*PNP0C03", "*ACPI0003"
621 */
622 Source = ReturnObject->String.Pointer;
623 if (*Source == '*')
624 {
625 Source++;
626 NewString->String.Length--;
627
628 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
629 "%s: Removed invalid leading asterisk\n", Info->FullPathname));
630 }
631
632 /*
633 * Copy and uppercase the string. From the ACPI 5.0 specification:
634 *
635 * A valid PNP ID must be of the form "AAA####" where A is an uppercase
636 * letter and # is a hex digit. A valid ACPI ID must be of the form
637 * "NNNN####" where N is an uppercase letter or decimal digit, and
638 * # is a hex digit.
639 */
640 for (Dest = NewString->String.Pointer; *Source; Dest++, Source++)
641 {
642 *Dest = (char) ACPI_TOUPPER (*Source);
643 }
644
645 AcpiUtRemoveReference (ReturnObject);
646 *ReturnObjectPtr = NewString;
647 return (AE_OK);
648 }
649
650
651 /******************************************************************************
652 *
653 * FUNCTION: AcpiNsRepair_PRT
654 *
655 * PARAMETERS: Info - Method execution information block
656 * ReturnObjectPtr - Pointer to the object returned from the
657 * evaluation of a method or object
658 *
659 * RETURN: Status. AE_OK if object is OK or was repaired successfully
660 *
661 * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed
662 * SourceName and SourceIndex field, a common BIOS bug.
663 *
664 *****************************************************************************/
665
666 static ACPI_STATUS
667 AcpiNsRepair_PRT (
668 ACPI_EVALUATE_INFO *Info,
669 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
670 {
671 ACPI_OPERAND_OBJECT *PackageObject = *ReturnObjectPtr;
672 ACPI_OPERAND_OBJECT **TopObjectList;
673 ACPI_OPERAND_OBJECT **SubObjectList;
674 ACPI_OPERAND_OBJECT *ObjDesc;
675 UINT32 ElementCount;
676 UINT32 Index;
677
678
679 /* Each element in the _PRT package is a subpackage */
680
681 TopObjectList = PackageObject->Package.Elements;
682 ElementCount = PackageObject->Package.Count;
683
684 for (Index = 0; Index < ElementCount; Index++)
685 {
686 SubObjectList = (*TopObjectList)->Package.Elements;
687
688 /*
689 * If the BIOS has erroneously reversed the _PRT SourceName (index 2)
690 * and the SourceIndex (index 3), fix it. _PRT is important enough to
691 * workaround this BIOS error. This also provides compatibility with
692 * other ACPI implementations.
693 */
694 ObjDesc = SubObjectList[3];
695 if (!ObjDesc || (ObjDesc->Common.Type != ACPI_TYPE_INTEGER))
696 {
697 SubObjectList[3] = SubObjectList[2];
698 SubObjectList[2] = ObjDesc;
699 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
700
701 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
702 "PRT[%X]: Fixed reversed SourceName and SourceIndex",
703 Index));
704 }
705
706 /* Point to the next ACPI_OPERAND_OBJECT in the top level package */
707
708 TopObjectList++;
709 }
710
711 return (AE_OK);
712 }
713
714
715 /******************************************************************************
716 *
717 * FUNCTION: AcpiNsRepair_PSS
718 *
719 * PARAMETERS: Info - Method execution information block
720 * ReturnObjectPtr - Pointer to the object returned from the
721 * evaluation of a method or object
722 *
723 * RETURN: Status. AE_OK if object is OK or was repaired successfully
724 *
725 * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list
726 * by the CPU frequencies. Check that the power dissipation values
727 * are all proportional to CPU frequency (i.e., sorting by
728 * frequency should be the same as sorting by power.)
729 *
730 *****************************************************************************/
731
732 static ACPI_STATUS
733 AcpiNsRepair_PSS (
734 ACPI_EVALUATE_INFO *Info,
735 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
736 {
737 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
738 ACPI_OPERAND_OBJECT **OuterElements;
739 UINT32 OuterElementCount;
740 ACPI_OPERAND_OBJECT **Elements;
741 ACPI_OPERAND_OBJECT *ObjDesc;
742 UINT32 PreviousValue;
743 ACPI_STATUS Status;
744 UINT32 i;
745
746
747 /*
748 * Entries (sub-packages) in the _PSS Package must be sorted by power
749 * dissipation, in descending order. If it appears that the list is
750 * incorrectly sorted, sort it. We sort by CpuFrequency, since this
751 * should be proportional to the power.
752 */
753 Status =AcpiNsCheckSortedList (Info, ReturnObject, 0, 6, 0,
754 ACPI_SORT_DESCENDING, "CpuFrequency");
755 if (ACPI_FAILURE (Status))
756 {
757 return (Status);
758 }
759
760 /*
761 * We now know the list is correctly sorted by CPU frequency. Check if
762 * the power dissipation values are proportional.
763 */
764 PreviousValue = ACPI_UINT32_MAX;
765 OuterElements = ReturnObject->Package.Elements;
766 OuterElementCount = ReturnObject->Package.Count;
767
768 for (i = 0; i < OuterElementCount; i++)
769 {
770 Elements = (*OuterElements)->Package.Elements;
771 ObjDesc = Elements[1]; /* Index1 = PowerDissipation */
772
773 if ((UINT32) ObjDesc->Integer.Value > PreviousValue)
774 {
775 ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
776 "SubPackage[%u,%u] - suspicious power dissipation values",
777 i-1, i));
778 }
779
780 PreviousValue = (UINT32) ObjDesc->Integer.Value;
781 OuterElements++;
782 }
783
784 return (AE_OK);
785 }
786
787
788 /******************************************************************************
789 *
790 * FUNCTION: AcpiNsRepair_TSS
791 *
792 * PARAMETERS: Info - Method execution information block
793 * ReturnObjectPtr - Pointer to the object returned from the
794 * evaluation of a method or object
795 *
796 * RETURN: Status. AE_OK if object is OK or was repaired successfully
797 *
798 * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
799 * descending by the power dissipation values.
800 *
801 *****************************************************************************/
802
803 static ACPI_STATUS
804 AcpiNsRepair_TSS (
805 ACPI_EVALUATE_INFO *Info,
806 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
807 {
808 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
809 ACPI_STATUS Status;
810 ACPI_NAMESPACE_NODE *Node;
811
812
813 /*
814 * We can only sort the _TSS return package if there is no _PSS in the
815 * same scope. This is because if _PSS is present, the ACPI specification
816 * dictates that the _TSS Power Dissipation field is to be ignored, and
817 * therefore some BIOSs leave garbage values in the _TSS Power field(s).
818 * In this case, it is best to just return the _TSS package as-is.
819 * (May, 2011)
820 */
821 Status = AcpiNsGetNode (Info->Node, "^_PSS",
822 ACPI_NS_NO_UPSEARCH, &Node);
823 if (ACPI_SUCCESS (Status))
824 {
825 return (AE_OK);
826 }
827
828 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 5, 1,
829 ACPI_SORT_DESCENDING, "PowerDissipation");
830
831 return (Status);
832 }
833
834
835 /******************************************************************************
836 *
837 * FUNCTION: AcpiNsCheckSortedList
838 *
839 * PARAMETERS: Info - Method execution information block
840 * ReturnObject - Pointer to the top-level returned object
841 * StartIndex - Index of the first sub-package
842 * ExpectedCount - Minimum length of each sub-package
843 * SortIndex - Sub-package entry to sort on
844 * SortDirection - Ascending or descending
845 * SortKeyName - Name of the SortIndex field
846 *
847 * RETURN: Status. AE_OK if the list is valid and is sorted correctly or
848 * has been repaired by sorting the list.
849 *
850 * DESCRIPTION: Check if the package list is valid and sorted correctly by the
851 * SortIndex. If not, then sort the list.
852 *
853 *****************************************************************************/
854
855 static ACPI_STATUS
856 AcpiNsCheckSortedList (
857 ACPI_EVALUATE_INFO *Info,
858 ACPI_OPERAND_OBJECT *ReturnObject,
859 UINT32 StartIndex,
860 UINT32 ExpectedCount,
861 UINT32 SortIndex,
862 UINT8 SortDirection,
863 char *SortKeyName)
864 {
865 UINT32 OuterElementCount;
866 ACPI_OPERAND_OBJECT **OuterElements;
867 ACPI_OPERAND_OBJECT **Elements;
868 ACPI_OPERAND_OBJECT *ObjDesc;
869 UINT32 i;
870 UINT32 PreviousValue;
871
872
873 ACPI_FUNCTION_NAME (NsCheckSortedList);
874
875
876 /* The top-level object must be a package */
877
878 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE)
879 {
880 return (AE_AML_OPERAND_TYPE);
881 }
882
883 /*
884 * NOTE: assumes list of sub-packages contains no NULL elements.
885 * Any NULL elements should have been removed by earlier call
886 * to AcpiNsRemoveNullElements.
887 */
888 OuterElementCount = ReturnObject->Package.Count;
889 if (!OuterElementCount || StartIndex >= OuterElementCount)
890 {
891 return (AE_AML_PACKAGE_LIMIT);
892 }
893
894 OuterElements = &ReturnObject->Package.Elements[StartIndex];
895 OuterElementCount -= StartIndex;
896
897 PreviousValue = 0;
898 if (SortDirection == ACPI_SORT_DESCENDING)
899 {
900 PreviousValue = ACPI_UINT32_MAX;
901 }
902
903 /* Examine each subpackage */
904
905 for (i = 0; i < OuterElementCount; i++)
906 {
907 /* Each element of the top-level package must also be a package */
908
909 if ((*OuterElements)->Common.Type != ACPI_TYPE_PACKAGE)
910 {
911 return (AE_AML_OPERAND_TYPE);
912 }
913
914 /* Each sub-package must have the minimum length */
915
916 if ((*OuterElements)->Package.Count < ExpectedCount)
917 {
918 return (AE_AML_PACKAGE_LIMIT);
919 }
920
921 Elements = (*OuterElements)->Package.Elements;
922 ObjDesc = Elements[SortIndex];
923
924 if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
925 {
926 return (AE_AML_OPERAND_TYPE);
927 }
928
929 /*
930 * The list must be sorted in the specified order. If we detect a
931 * discrepancy, sort the entire list.
932 */
933 if (((SortDirection == ACPI_SORT_ASCENDING) &&
934 (ObjDesc->Integer.Value < PreviousValue)) ||
935 ((SortDirection == ACPI_SORT_DESCENDING) &&
936 (ObjDesc->Integer.Value > PreviousValue)))
937 {
938 AcpiNsSortList (&ReturnObject->Package.Elements[StartIndex],
939 OuterElementCount, SortIndex, SortDirection);
940
941 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
942
943 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
944 "%s: Repaired unsorted list - now sorted by %s\n",
945 Info->FullPathname, SortKeyName));
946 return (AE_OK);
947 }
948
949 PreviousValue = (UINT32) ObjDesc->Integer.Value;
950 OuterElements++;
951 }
952
953 return (AE_OK);
954 }
955
956
957 /******************************************************************************
958 *
959 * FUNCTION: AcpiNsSortList
960 *
961 * PARAMETERS: Elements - Package object element list
962 * Count - Element count for above
963 * Index - Sort by which package element
964 * SortDirection - Ascending or Descending sort
965 *
966 * RETURN: None
967 *
968 * DESCRIPTION: Sort the objects that are in a package element list.
969 *
970 * NOTE: Assumes that all NULL elements have been removed from the package,
971 * and that all elements have been verified to be of type Integer.
972 *
973 *****************************************************************************/
974
975 static void
976 AcpiNsSortList (
977 ACPI_OPERAND_OBJECT **Elements,
978 UINT32 Count,
979 UINT32 Index,
980 UINT8 SortDirection)
981 {
982 ACPI_OPERAND_OBJECT *ObjDesc1;
983 ACPI_OPERAND_OBJECT *ObjDesc2;
984 ACPI_OPERAND_OBJECT *TempObj;
985 UINT32 i;
986 UINT32 j;
987
988
989 /* Simple bubble sort */
990
991 for (i = 1; i < Count; i++)
992 {
993 for (j = (Count - 1); j >= i; j--)
994 {
995 ObjDesc1 = Elements[j-1]->Package.Elements[Index];
996 ObjDesc2 = Elements[j]->Package.Elements[Index];
997
998 if (((SortDirection == ACPI_SORT_ASCENDING) &&
999 (ObjDesc1->Integer.Value > ObjDesc2->Integer.Value)) ||
1000
1001 ((SortDirection == ACPI_SORT_DESCENDING) &&
1002 (ObjDesc1->Integer.Value < ObjDesc2->Integer.Value)))
1003 {
1004 TempObj = Elements[j-1];
1005 Elements[j-1] = Elements[j];
1006 Elements[j] = TempObj;
1007 }
1008 }
1009 }
1010 }
1011
1012
1013 /******************************************************************************
1014 *
1015 * FUNCTION: AcpiNsRemoveElement
1016 *
1017 * PARAMETERS: ObjDesc - Package object element list
1018 * Index - Index of element to remove
1019 *
1020 * RETURN: None
1021 *
1022 * DESCRIPTION: Remove the requested element of a package and delete it.
1023 *
1024 *****************************************************************************/
1025
1026 static void
1027 AcpiNsRemoveElement (
1028 ACPI_OPERAND_OBJECT *ObjDesc,
1029 UINT32 Index)
1030 {
1031 ACPI_OPERAND_OBJECT **Source;
1032 ACPI_OPERAND_OBJECT **Dest;
1033 UINT32 Count;
1034 UINT32 NewCount;
1035 UINT32 i;
1036
1037
1038 ACPI_FUNCTION_NAME (NsRemoveElement);
1039
1040
1041 Count = ObjDesc->Package.Count;
1042 NewCount = Count - 1;
1043
1044 Source = ObjDesc->Package.Elements;
1045 Dest = Source;
1046
1047 /* Examine all elements of the package object, remove matched index */
1048
1049 for (i = 0; i < Count; i++)
1050 {
1051 if (i == Index)
1052 {
1053 AcpiUtRemoveReference (*Source); /* Remove one ref for being in pkg */
1054 AcpiUtRemoveReference (*Source);
1055 }
1056 else
1057 {
1058 *Dest = *Source;
1059 Dest++;
1060 }
1061 Source++;
1062 }
1063
1064 /* NULL terminate list and update the package count */
1065
1066 *Dest = NULL;
1067 ObjDesc->Package.Count = NewCount;
1068 }