1 /******************************************************************************
2 *
3 * Module Name: nsrepair2 - Repair for objects returned by specific
4 * predefined methods
5 *
6 *****************************************************************************/
7
8 /******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************/
116
117 #define __NSREPAIR2_C__
118
119 #include "acpi.h"
120 #include "accommon.h"
121 #include "acnamesp.h"
122
123 #define _COMPONENT ACPI_NAMESPACE
124 ACPI_MODULE_NAME ("nsrepair2")
125
126
127 /*
128 * Information structure and handler for ACPI predefined names that can
129 * be repaired on a per-name basis.
130 */
131 typedef
132 ACPI_STATUS (*ACPI_REPAIR_FUNCTION) (
133 ACPI_PREDEFINED_DATA *Data,
134 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
135
136 typedef struct acpi_repair_info
137 {
138 char Name[ACPI_NAME_SIZE];
139 ACPI_REPAIR_FUNCTION RepairFunction;
140
141 } ACPI_REPAIR_INFO;
142
143
144 /* Local prototypes */
145
146 static const ACPI_REPAIR_INFO *
147 AcpiNsMatchRepairableName (
148 ACPI_NAMESPACE_NODE *Node);
149
150 static ACPI_STATUS
151 AcpiNsRepair_ALR (
152 ACPI_PREDEFINED_DATA *Data,
153 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
154
155 static ACPI_STATUS
156 AcpiNsRepair_PSS (
157 ACPI_PREDEFINED_DATA *Data,
158 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
159
160 static ACPI_STATUS
161 AcpiNsRepair_TSS (
162 ACPI_PREDEFINED_DATA *Data,
163 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
164
165 static ACPI_STATUS
166 AcpiNsCheckSortedList (
167 ACPI_PREDEFINED_DATA *Data,
168 ACPI_OPERAND_OBJECT *ReturnObject,
169 UINT32 ExpectedCount,
170 UINT32 SortIndex,
171 UINT8 SortDirection,
172 char *SortKeyName);
173
174 static ACPI_STATUS
175 AcpiNsRemoveNullElements (
176 ACPI_OPERAND_OBJECT *Package);
177
178 static ACPI_STATUS
179 AcpiNsSortList (
180 ACPI_OPERAND_OBJECT **Elements,
181 UINT32 Count,
182 UINT32 Index,
183 UINT8 SortDirection);
184
185 /* Values for SortDirection above */
186
187 #define ACPI_SORT_ASCENDING 0
188 #define ACPI_SORT_DESCENDING 1
189
190
191 /*
192 * This table contains the names of the predefined methods for which we can
193 * perform more complex repairs.
194 *
195 * _ALR: Sort the list ascending by AmbientIlluminance if necessary
196 * _PSS: Sort the list descending by Power if necessary
197 * _TSS: Sort the list descending by Power if necessary
198 */
199 static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] =
200 {
201 {"_ALR", AcpiNsRepair_ALR},
202 {"_PSS", AcpiNsRepair_PSS},
203 {"_TSS", AcpiNsRepair_TSS},
204 {{0,0,0,0}, NULL} /* Table terminator */
205 };
206
207
208 /******************************************************************************
209 *
210 * FUNCTION: AcpiNsComplexRepairs
211 *
212 * PARAMETERS: Data - Pointer to validation data structure
213 * Node - Namespace node for the method/object
214 * ValidateStatus - Original status of earlier validation
215 * ReturnObjectPtr - Pointer to the object returned from the
216 * evaluation of a method or object
217 *
218 * RETURN: Status. AE_OK if repair was successful. If name is not
219 * matched, ValidateStatus is returned.
220 *
221 * DESCRIPTION: Attempt to repair/convert a return object of a type that was
222 * not expected.
223 *
224 *****************************************************************************/
225
226 ACPI_STATUS
AcpiNsComplexRepairs(ACPI_PREDEFINED_DATA * Data,ACPI_NAMESPACE_NODE * Node,ACPI_STATUS ValidateStatus,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)227 AcpiNsComplexRepairs (
228 ACPI_PREDEFINED_DATA *Data,
229 ACPI_NAMESPACE_NODE *Node,
230 ACPI_STATUS ValidateStatus,
231 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
232 {
233 const ACPI_REPAIR_INFO *Predefined;
234 ACPI_STATUS Status;
235
236
237 /* Check if this name is in the list of repairable names */
238
239 Predefined = AcpiNsMatchRepairableName (Node);
240 if (!Predefined)
241 {
242 return (ValidateStatus);
243 }
244
245 Status = Predefined->RepairFunction (Data, ReturnObjectPtr);
246 return (Status);
247 }
248
249
250 /******************************************************************************
251 *
252 * FUNCTION: AcpiNsMatchRepairableName
253 *
254 * PARAMETERS: Node - Namespace node for the method/object
255 *
256 * RETURN: Pointer to entry in repair table. NULL indicates not found.
257 *
258 * DESCRIPTION: Check an object name against the repairable object list.
259 *
260 *****************************************************************************/
261
262 static const ACPI_REPAIR_INFO *
AcpiNsMatchRepairableName(ACPI_NAMESPACE_NODE * Node)263 AcpiNsMatchRepairableName (
264 ACPI_NAMESPACE_NODE *Node)
265 {
266 const ACPI_REPAIR_INFO *ThisName;
267
268
269 /* Search info table for a repairable predefined method/object name */
270
271 ThisName = AcpiNsRepairableNames;
272 while (ThisName->RepairFunction)
273 {
274 if (ACPI_COMPARE_NAME (Node->Name.Ascii, ThisName->Name))
275 {
276 return (ThisName);
277 }
278 ThisName++;
279 }
280
281 return (NULL); /* Not found */
282 }
283
284
285 /******************************************************************************
286 *
287 * FUNCTION: AcpiNsRepair_ALR
288 *
289 * PARAMETERS: Data - Pointer to validation data structure
290 * ReturnObjectPtr - Pointer to the object returned from the
291 * evaluation of a method or object
292 *
293 * RETURN: Status. AE_OK if object is OK or was repaired successfully
294 *
295 * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list
296 * ascending by the ambient illuminance values.
297 *
298 *****************************************************************************/
299
300 static ACPI_STATUS
AcpiNsRepair_ALR(ACPI_PREDEFINED_DATA * Data,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)301 AcpiNsRepair_ALR (
302 ACPI_PREDEFINED_DATA *Data,
303 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
304 {
305 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
306 ACPI_STATUS Status;
307
308
309 Status = AcpiNsCheckSortedList (Data, ReturnObject, 2, 1,
310 ACPI_SORT_ASCENDING, "AmbientIlluminance");
311
312 return (Status);
313 }
314
315
316 /******************************************************************************
317 *
318 * FUNCTION: AcpiNsRepair_TSS
319 *
320 * PARAMETERS: Data - Pointer to validation data structure
321 * ReturnObjectPtr - Pointer to the object returned from the
322 * evaluation of a method or object
323 *
324 * RETURN: Status. AE_OK if object is OK or was repaired successfully
325 *
326 * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
327 * descending by the power dissipation values.
328 *
329 *****************************************************************************/
330
331 static ACPI_STATUS
AcpiNsRepair_TSS(ACPI_PREDEFINED_DATA * Data,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)332 AcpiNsRepair_TSS (
333 ACPI_PREDEFINED_DATA *Data,
334 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
335 {
336 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
337 ACPI_STATUS Status;
338
339
340 Status = AcpiNsCheckSortedList (Data, ReturnObject, 5, 1,
341 ACPI_SORT_DESCENDING, "PowerDissipation");
342
343 return (Status);
344 }
345
346
347 /******************************************************************************
348 *
349 * FUNCTION: AcpiNsRepair_PSS
350 *
351 * PARAMETERS: Data - Pointer to validation data structure
352 * ReturnObjectPtr - Pointer to the object returned from the
353 * evaluation of a method or object
354 *
355 * RETURN: Status. AE_OK if object is OK or was repaired successfully
356 *
357 * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list
358 * by the CPU frequencies. Check that the power dissipation values
359 * are all proportional to CPU frequency (i.e., sorting by
360 * frequency should be the same as sorting by power.)
361 *
362 *****************************************************************************/
363
364 static ACPI_STATUS
AcpiNsRepair_PSS(ACPI_PREDEFINED_DATA * Data,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)365 AcpiNsRepair_PSS (
366 ACPI_PREDEFINED_DATA *Data,
367 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
368 {
369 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
370 ACPI_OPERAND_OBJECT **OuterElements;
371 UINT32 OuterElementCount;
372 ACPI_OPERAND_OBJECT **Elements;
373 ACPI_OPERAND_OBJECT *ObjDesc;
374 UINT32 PreviousValue;
375 ACPI_STATUS Status;
376 UINT32 i;
377
378
379 /*
380 * Entries (sub-packages) in the _PSS Package must be sorted by power
381 * dissipation, in descending order. If it appears that the list is
382 * incorrectly sorted, sort it. We sort by CpuFrequency, since this
383 * should be proportional to the power.
384 */
385 Status =AcpiNsCheckSortedList (Data, ReturnObject, 6, 0,
386 ACPI_SORT_DESCENDING, "CpuFrequency");
387 if (ACPI_FAILURE (Status))
388 {
389 return (Status);
390 }
391
392 /*
393 * We now know the list is correctly sorted by CPU frequency. Check if
394 * the power dissipation values are proportional.
395 */
396 PreviousValue = ACPI_UINT32_MAX;
397 OuterElements = ReturnObject->Package.Elements;
398 OuterElementCount = ReturnObject->Package.Count;
399
400 for (i = 0; i < OuterElementCount; i++)
401 {
402 Elements = (*OuterElements)->Package.Elements;
403 ObjDesc = Elements[1]; /* Index1 = PowerDissipation */
404
405 if ((UINT32) ObjDesc->Integer.Value > PreviousValue)
406 {
407 ACPI_WARN_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
408 "SubPackage[%u,%u] - suspicious power dissipation values",
409 i-1, i));
410 }
411
412 PreviousValue = (UINT32) ObjDesc->Integer.Value;
413 OuterElements++;
414 }
415
416 return (AE_OK);
417 }
418
419
420 /******************************************************************************
421 *
422 * FUNCTION: AcpiNsCheckSortedList
423 *
424 * PARAMETERS: Data - Pointer to validation data structure
425 * ReturnObject - Pointer to the top-level returned object
426 * ExpectedCount - Minimum length of each sub-package
427 * SortIndex - Sub-package entry to sort on
428 * SortDirection - Ascending or descending
429 * SortKeyName - Name of the SortIndex field
430 *
431 * RETURN: Status. AE_OK if the list is valid and is sorted correctly or
432 * has been repaired by sorting the list.
433 *
434 * DESCRIPTION: Check if the package list is valid and sorted correctly by the
435 * SortIndex. If not, then sort the list.
436 *
437 *****************************************************************************/
438
439 static ACPI_STATUS
AcpiNsCheckSortedList(ACPI_PREDEFINED_DATA * Data,ACPI_OPERAND_OBJECT * ReturnObject,UINT32 ExpectedCount,UINT32 SortIndex,UINT8 SortDirection,char * SortKeyName)440 AcpiNsCheckSortedList (
441 ACPI_PREDEFINED_DATA *Data,
442 ACPI_OPERAND_OBJECT *ReturnObject,
443 UINT32 ExpectedCount,
444 UINT32 SortIndex,
445 UINT8 SortDirection,
446 char *SortKeyName)
447 {
448 UINT32 OuterElementCount;
449 ACPI_OPERAND_OBJECT **OuterElements;
450 ACPI_OPERAND_OBJECT **Elements;
451 ACPI_OPERAND_OBJECT *ObjDesc;
452 UINT32 i;
453 UINT32 PreviousValue;
454 ACPI_STATUS Status;
455
456
457 /* The top-level object must be a package */
458
459 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE)
460 {
461 return (AE_AML_OPERAND_TYPE);
462 }
463
464 /*
465 * Detect any NULL package elements and remove them from the
466 * package.
467 *
468 * TBD: We may want to do this for all predefined names that
469 * return a variable-length package of packages.
470 */
471 Status = AcpiNsRemoveNullElements (ReturnObject);
472 if (Status == AE_NULL_ENTRY)
473 {
474 ACPI_INFO_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
475 "NULL elements removed from package"));
476
477 /* Exit if package is now zero length */
478
479 if (!ReturnObject->Package.Count)
480 {
481 return (AE_NULL_ENTRY);
482 }
483 }
484
485 OuterElements = ReturnObject->Package.Elements;
486 OuterElementCount = ReturnObject->Package.Count;
487 if (!OuterElementCount)
488 {
489 return (AE_AML_PACKAGE_LIMIT);
490 }
491
492 PreviousValue = 0;
493 if (SortDirection == ACPI_SORT_DESCENDING)
494 {
495 PreviousValue = ACPI_UINT32_MAX;
496 }
497
498 /* Examine each subpackage */
499
500 for (i = 0; i < OuterElementCount; i++)
501 {
502 /* Each element of the top-level package must also be a package */
503
504 if ((*OuterElements)->Common.Type != ACPI_TYPE_PACKAGE)
505 {
506 return (AE_AML_OPERAND_TYPE);
507 }
508
509 /* Each sub-package must have the minimum length */
510
511 if ((*OuterElements)->Package.Count < ExpectedCount)
512 {
513 return (AE_AML_PACKAGE_LIMIT);
514 }
515
516 Elements = (*OuterElements)->Package.Elements;
517 ObjDesc = Elements[SortIndex];
518
519 if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
520 {
521 return (AE_AML_OPERAND_TYPE);
522 }
523
524 /*
525 * The list must be sorted in the specified order. If we detect a
526 * discrepancy, issue a warning and sort the entire list
527 */
528 if (((SortDirection == ACPI_SORT_ASCENDING) &&
529 (ObjDesc->Integer.Value < PreviousValue)) ||
530 ((SortDirection == ACPI_SORT_DESCENDING) &&
531 (ObjDesc->Integer.Value > PreviousValue)))
532 {
533 Status = AcpiNsSortList (ReturnObject->Package.Elements,
534 OuterElementCount, SortIndex, SortDirection);
535 if (ACPI_FAILURE (Status))
536 {
537 return (Status);
538 }
539
540 Data->Flags |= ACPI_OBJECT_REPAIRED;
541
542 ACPI_INFO_PREDEFINED ((AE_INFO, Data->Pathname, Data->NodeFlags,
543 "Repaired unsorted list - now sorted by %s", SortKeyName));
544 return (AE_OK);
545 }
546
547 PreviousValue = (UINT32) ObjDesc->Integer.Value;
548 OuterElements++;
549 }
550
551 return (AE_OK);
552 }
553
554
555 /******************************************************************************
556 *
557 * FUNCTION: AcpiNsRemoveNullElements
558 *
559 * PARAMETERS: ObjDesc - A Package object
560 *
561 * RETURN: Status. AE_NULL_ENTRY means that one or more elements were
562 * removed.
563 *
564 * DESCRIPTION: Remove all NULL package elements and update the package count.
565 *
566 *****************************************************************************/
567
568 static ACPI_STATUS
AcpiNsRemoveNullElements(ACPI_OPERAND_OBJECT * ObjDesc)569 AcpiNsRemoveNullElements (
570 ACPI_OPERAND_OBJECT *ObjDesc)
571 {
572 ACPI_OPERAND_OBJECT **Source;
573 ACPI_OPERAND_OBJECT **Dest;
574 ACPI_STATUS Status = AE_OK;
575 UINT32 Count;
576 UINT32 NewCount;
577 UINT32 i;
578
579
580 Count = ObjDesc->Package.Count;
581 NewCount = Count;
582
583 Source = ObjDesc->Package.Elements;
584 Dest = Source;
585
586 /* Examine all elements of the package object */
587
588 for (i = 0; i < Count; i++)
589 {
590 if (!*Source)
591 {
592 Status = AE_NULL_ENTRY;
593 NewCount--;
594 }
595 else
596 {
597 *Dest = *Source;
598 Dest++;
599 }
600 Source++;
601 }
602
603 if (Status == AE_NULL_ENTRY)
604 {
605 /* NULL terminate list and update the package count */
606
607 *Dest = NULL;
608 ObjDesc->Package.Count = NewCount;
609 }
610
611 return (Status);
612 }
613
614
615 /******************************************************************************
616 *
617 * FUNCTION: AcpiNsSortList
618 *
619 * PARAMETERS: Elements - Package object element list
620 * Count - Element count for above
621 * Index - Sort by which package element
622 * SortDirection - Ascending or Descending sort
623 *
624 * RETURN: Status
625 *
626 * DESCRIPTION: Sort the objects that are in a package element list.
627 *
628 * NOTE: Assumes that all NULL elements have been removed from the package.
629 *
630 *****************************************************************************/
631
632 static ACPI_STATUS
AcpiNsSortList(ACPI_OPERAND_OBJECT ** Elements,UINT32 Count,UINT32 Index,UINT8 SortDirection)633 AcpiNsSortList (
634 ACPI_OPERAND_OBJECT **Elements,
635 UINT32 Count,
636 UINT32 Index,
637 UINT8 SortDirection)
638 {
639 ACPI_OPERAND_OBJECT *ObjDesc1;
640 ACPI_OPERAND_OBJECT *ObjDesc2;
641 ACPI_OPERAND_OBJECT *TempObj;
642 UINT32 i;
643 UINT32 j;
644
645
646 /* Simple bubble sort */
647
648 for (i = 1; i < Count; i++)
649 {
650 for (j = (Count - 1); j >= i; j--)
651 {
652 ObjDesc1 = Elements[j-1]->Package.Elements[Index];
653 ObjDesc2 = Elements[j]->Package.Elements[Index];
654
655 if (((SortDirection == ACPI_SORT_ASCENDING) &&
656 (ObjDesc1->Integer.Value > ObjDesc2->Integer.Value)) ||
657
658 ((SortDirection == ACPI_SORT_DESCENDING) &&
659 (ObjDesc1->Integer.Value < ObjDesc2->Integer.Value)))
660 {
661 TempObj = Elements[j-1];
662 Elements[j-1] = Elements[j];
663 Elements[j] = TempObj;
664 }
665 }
666 }
667
668 return (AE_OK);
669 }
670