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 - 2021, 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 * Alternatively, you may choose to be licensed under the terms of the
118 * following license:
119 *
120 * Redistribution and use in source and binary forms, with or without
121 * modification, are permitted provided that the following conditions
122 * are met:
123 * 1. Redistributions of source code must retain the above copyright
124 * notice, this list of conditions, and the following disclaimer,
125 * without modification.
126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
127 * substantially similar to the "NO WARRANTY" disclaimer below
128 * ("Disclaimer") and any redistribution must be conditioned upon
129 * including a substantially similar Disclaimer requirement for further
130 * binary redistribution.
131 * 3. Neither the names of the above-listed copyright holders nor the names
132 * of any contributors may be used to endorse or promote products derived
133 * from this software without specific prior written permission.
134 *
135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146 *
147 * Alternatively, you may choose to be licensed under the terms of the
148 * GNU General Public License ("GPL") version 2 as published by the Free
149 * Software Foundation.
150 *
151 *****************************************************************************/
152
153 #include "acpi.h"
154 #include "accommon.h"
155 #include "acnamesp.h"
156
157 #define _COMPONENT ACPI_NAMESPACE
158 ACPI_MODULE_NAME ("nsrepair2")
159
160
161 /*
162 * Information structure and handler for ACPI predefined names that can
163 * be repaired on a per-name basis.
164 */
165 typedef
166 ACPI_STATUS (*ACPI_REPAIR_FUNCTION) (
167 ACPI_EVALUATE_INFO *Info,
168 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
169
170 typedef struct acpi_repair_info
171 {
172 char Name[ACPI_NAMESEG_SIZE];
173 ACPI_REPAIR_FUNCTION RepairFunction;
174
175 } ACPI_REPAIR_INFO;
176
177
178 /* Local prototypes */
179
180 static const ACPI_REPAIR_INFO *
181 AcpiNsMatchComplexRepair (
182 ACPI_NAMESPACE_NODE *Node);
183
184 static ACPI_STATUS
185 AcpiNsRepair_ALR (
186 ACPI_EVALUATE_INFO *Info,
187 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
188
189 static ACPI_STATUS
190 AcpiNsRepair_CID (
191 ACPI_EVALUATE_INFO *Info,
192 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
193
194 static ACPI_STATUS
195 AcpiNsRepair_CST (
196 ACPI_EVALUATE_INFO *Info,
197 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
198
199 static ACPI_STATUS
200 AcpiNsRepair_FDE (
201 ACPI_EVALUATE_INFO *Info,
202 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
203
204 static ACPI_STATUS
205 AcpiNsRepair_HID (
206 ACPI_EVALUATE_INFO *Info,
207 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
208
209 static ACPI_STATUS
210 AcpiNsRepair_PRT (
211 ACPI_EVALUATE_INFO *Info,
212 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
213
214 static ACPI_STATUS
215 AcpiNsRepair_PSS (
216 ACPI_EVALUATE_INFO *Info,
217 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
218
219 static ACPI_STATUS
220 AcpiNsRepair_TSS (
221 ACPI_EVALUATE_INFO *Info,
222 ACPI_OPERAND_OBJECT **ReturnObjectPtr);
223
224 static ACPI_STATUS
225 AcpiNsCheckSortedList (
226 ACPI_EVALUATE_INFO *Info,
227 ACPI_OPERAND_OBJECT *ReturnObject,
228 UINT32 StartIndex,
229 UINT32 ExpectedCount,
230 UINT32 SortIndex,
231 UINT8 SortDirection,
232 char *SortKeyName);
233
234 /* Values for SortDirection above */
235
236 #define ACPI_SORT_ASCENDING 0
237 #define ACPI_SORT_DESCENDING 1
238
239 static void
240 AcpiNsRemoveElement (
241 ACPI_OPERAND_OBJECT *ObjDesc,
242 UINT32 Index);
243
244 static void
245 AcpiNsSortList (
246 ACPI_OPERAND_OBJECT **Elements,
247 UINT32 Count,
248 UINT32 Index,
249 UINT8 SortDirection);
250
251
252 /*
253 * This table contains the names of the predefined methods for which we can
254 * perform more complex repairs.
255 *
256 * As necessary:
257 *
258 * _ALR: Sort the list ascending by AmbientIlluminance
259 * _CID: Strings: uppercase all, remove any leading asterisk
260 * _CST: Sort the list ascending by C state type
261 * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs
262 * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
263 * _HID: Strings: uppercase all, remove any leading asterisk
264 * _PRT: Fix reversed SourceName and SourceIndex
265 * _PSS: Sort the list descending by Power
266 * _TSS: Sort the list descending by Power
267 *
268 * Names that must be packages, but cannot be sorted:
269 *
270 * _BCL: Values are tied to the Package index where they appear, and cannot
271 * be moved or sorted. These index values are used for _BQC and _BCM.
272 * However, we can fix the case where a buffer is returned, by converting
273 * it to a Package of integers.
274 */
275 static const ACPI_REPAIR_INFO AcpiNsRepairableNames[] =
276 {
277 {"_ALR", AcpiNsRepair_ALR},
278 {"_CID", AcpiNsRepair_CID},
279 {"_CST", AcpiNsRepair_CST},
280 {"_FDE", AcpiNsRepair_FDE},
281 {"_GTM", AcpiNsRepair_FDE}, /* _GTM has same repair as _FDE */
282 {"_HID", AcpiNsRepair_HID},
283 {"_PRT", AcpiNsRepair_PRT},
284 {"_PSS", AcpiNsRepair_PSS},
285 {"_TSS", AcpiNsRepair_TSS},
286 {{0,0,0,0}, NULL} /* Table terminator */
287 };
288
289
290 #define ACPI_FDE_FIELD_COUNT 5
291 #define ACPI_FDE_BYTE_BUFFER_SIZE 5
292 #define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * (UINT32) sizeof (UINT32))
293
294
295 /******************************************************************************
296 *
297 * FUNCTION: AcpiNsComplexRepairs
298 *
299 * PARAMETERS: Info - Method execution information block
300 * Node - Namespace node for the method/object
301 * ValidateStatus - Original status of earlier validation
302 * ReturnObjectPtr - Pointer to the object returned from the
303 * evaluation of a method or object
304 *
305 * RETURN: Status. AE_OK if repair was successful. If name is not
306 * matched, ValidateStatus is returned.
307 *
308 * DESCRIPTION: Attempt to repair/convert a return object of a type that was
309 * not expected.
310 *
311 *****************************************************************************/
312
313 ACPI_STATUS
AcpiNsComplexRepairs(ACPI_EVALUATE_INFO * Info,ACPI_NAMESPACE_NODE * Node,ACPI_STATUS ValidateStatus,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)314 AcpiNsComplexRepairs (
315 ACPI_EVALUATE_INFO *Info,
316 ACPI_NAMESPACE_NODE *Node,
317 ACPI_STATUS ValidateStatus,
318 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
319 {
320 const ACPI_REPAIR_INFO *Predefined;
321 ACPI_STATUS Status;
322
323
324 ACPI_FUNCTION_TRACE (NsComplexRepairs);
325
326 /* Check if this name is in the list of repairable names */
327
328 Predefined = AcpiNsMatchComplexRepair (Node);
329 if (!Predefined)
330 {
331 return_ACPI_STATUS (ValidateStatus);
332 }
333
334 Status = Predefined->RepairFunction (Info, ReturnObjectPtr);
335 return_ACPI_STATUS (Status);
336 }
337
338
339 /******************************************************************************
340 *
341 * FUNCTION: AcpiNsMatchComplexRepair
342 *
343 * PARAMETERS: Node - Namespace node for the method/object
344 *
345 * RETURN: Pointer to entry in repair table. NULL indicates not found.
346 *
347 * DESCRIPTION: Check an object name against the repairable object list.
348 *
349 *****************************************************************************/
350
351 static const ACPI_REPAIR_INFO *
AcpiNsMatchComplexRepair(ACPI_NAMESPACE_NODE * Node)352 AcpiNsMatchComplexRepair (
353 ACPI_NAMESPACE_NODE *Node)
354 {
355 const ACPI_REPAIR_INFO *ThisName;
356
357
358 /* Search info table for a repairable predefined method/object name */
359
360 ThisName = AcpiNsRepairableNames;
361 while (ThisName->RepairFunction)
362 {
363 if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii, ThisName->Name))
364 {
365 return (ThisName);
366 }
367
368 ThisName++;
369 }
370
371 return (NULL); /* Not found */
372 }
373
374
375 /******************************************************************************
376 *
377 * FUNCTION: AcpiNsRepair_ALR
378 *
379 * PARAMETERS: Info - Method execution information block
380 * ReturnObjectPtr - Pointer to the object returned from the
381 * evaluation of a method or object
382 *
383 * RETURN: Status. AE_OK if object is OK or was repaired successfully
384 *
385 * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list
386 * ascending by the ambient illuminance values.
387 *
388 *****************************************************************************/
389
390 static ACPI_STATUS
AcpiNsRepair_ALR(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)391 AcpiNsRepair_ALR (
392 ACPI_EVALUATE_INFO *Info,
393 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
394 {
395 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
396 ACPI_STATUS Status;
397
398
399 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 2, 1,
400 ACPI_SORT_ASCENDING, "AmbientIlluminance");
401
402 return (Status);
403 }
404
405
406 /******************************************************************************
407 *
408 * FUNCTION: AcpiNsRepair_FDE
409 *
410 * PARAMETERS: Info - Method execution information block
411 * ReturnObjectPtr - Pointer to the object returned from the
412 * evaluation of a method or object
413 *
414 * RETURN: Status. AE_OK if object is OK or was repaired successfully
415 *
416 * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return
417 * value is a Buffer of 5 DWORDs. This function repairs a common
418 * problem where the return value is a Buffer of BYTEs, not
419 * DWORDs.
420 *
421 *****************************************************************************/
422
423 static ACPI_STATUS
AcpiNsRepair_FDE(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)424 AcpiNsRepair_FDE (
425 ACPI_EVALUATE_INFO *Info,
426 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
427 {
428 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
429 ACPI_OPERAND_OBJECT *BufferObject;
430 UINT8 *ByteBuffer;
431 UINT32 *DwordBuffer;
432 UINT32 i;
433
434
435 ACPI_FUNCTION_NAME (NsRepair_FDE);
436
437
438 switch (ReturnObject->Common.Type)
439 {
440 case ACPI_TYPE_BUFFER:
441
442 /* This is the expected type. Length should be (at least) 5 DWORDs */
443
444 if (ReturnObject->Buffer.Length >= ACPI_FDE_DWORD_BUFFER_SIZE)
445 {
446 return (AE_OK);
447 }
448
449 /* We can only repair if we have exactly 5 BYTEs */
450
451 if (ReturnObject->Buffer.Length != ACPI_FDE_BYTE_BUFFER_SIZE)
452 {
453 ACPI_WARN_PREDEFINED ((AE_INFO,
454 Info->FullPathname, Info->NodeFlags,
455 "Incorrect return buffer length %u, expected %u",
456 ReturnObject->Buffer.Length, ACPI_FDE_DWORD_BUFFER_SIZE));
457
458 return (AE_AML_OPERAND_TYPE);
459 }
460
461 /* Create the new (larger) buffer object */
462
463 BufferObject = AcpiUtCreateBufferObject (
464 ACPI_FDE_DWORD_BUFFER_SIZE);
465 if (!BufferObject)
466 {
467 return (AE_NO_MEMORY);
468 }
469
470 /* Expand each byte to a DWORD */
471
472 ByteBuffer = ReturnObject->Buffer.Pointer;
473 DwordBuffer = ACPI_CAST_PTR (UINT32,
474 BufferObject->Buffer.Pointer);
475
476 for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++)
477 {
478 *DwordBuffer = (UINT32) *ByteBuffer;
479 DwordBuffer++;
480 ByteBuffer++;
481 }
482
483 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
484 "%s Expanded Byte Buffer to expected DWord Buffer\n",
485 Info->FullPathname));
486 break;
487
488 default:
489
490 return (AE_AML_OPERAND_TYPE);
491 }
492
493 /* Delete the original return object, return the new buffer object */
494
495 AcpiUtRemoveReference (ReturnObject);
496 *ReturnObjectPtr = BufferObject;
497
498 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
499 return (AE_OK);
500 }
501
502
503 /******************************************************************************
504 *
505 * FUNCTION: AcpiNsRepair_CID
506 *
507 * PARAMETERS: Info - Method execution information block
508 * ReturnObjectPtr - Pointer to the object returned from the
509 * evaluation of a method or object
510 *
511 * RETURN: Status. AE_OK if object is OK or was repaired successfully
512 *
513 * DESCRIPTION: Repair for the _CID object. If a string, ensure that all
514 * letters are uppercase and that there is no leading asterisk.
515 * If a Package, ensure same for all string elements.
516 *
517 *****************************************************************************/
518
519 static ACPI_STATUS
AcpiNsRepair_CID(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)520 AcpiNsRepair_CID (
521 ACPI_EVALUATE_INFO *Info,
522 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
523 {
524 ACPI_STATUS Status;
525 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
526 ACPI_OPERAND_OBJECT **ElementPtr;
527 ACPI_OPERAND_OBJECT *OriginalElement;
528 UINT16 OriginalRefCount;
529 UINT32 i;
530
531 ACPI_FUNCTION_TRACE (NsRepair_CID);
532
533 /* Check for _CID as a simple string */
534
535 if (ReturnObject->Common.Type == ACPI_TYPE_STRING)
536 {
537 Status = AcpiNsRepair_HID (Info, ReturnObjectPtr);
538 return_ACPI_STATUS (Status);
539 }
540
541 /* Exit if not a Package */
542
543 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE)
544 {
545 return_ACPI_STATUS (AE_OK);
546 }
547
548 /* Examine each element of the _CID package */
549
550 ElementPtr = ReturnObject->Package.Elements;
551 for (i = 0; i < ReturnObject->Package.Count; i++)
552 {
553 OriginalElement = *ElementPtr;
554 OriginalRefCount = OriginalElement->Common.ReferenceCount;
555
556 Status = AcpiNsRepair_HID (Info, ElementPtr);
557 if (ACPI_FAILURE (Status))
558 {
559 return_ACPI_STATUS (Status);
560 }
561
562 if (OriginalElement != *ElementPtr)
563 {
564 /* Update reference count of new object */
565
566 (*ElementPtr)->Common.ReferenceCount =
567 OriginalRefCount;
568
569 /*
570 * The OriginalElement holds a reference from the package object
571 * that represents _HID. Since a new element was created by _HID,
572 * remove the reference from the _CID package.
573 */
574 AcpiUtRemoveReference (OriginalElement);
575 }
576
577 ElementPtr++;
578 }
579
580 return_ACPI_STATUS (AE_OK);
581 }
582
583
584 /******************************************************************************
585 *
586 * FUNCTION: AcpiNsRepair_CST
587 *
588 * PARAMETERS: Info - Method execution information block
589 * ReturnObjectPtr - Pointer to the object returned from the
590 * evaluation of a method or object
591 *
592 * RETURN: Status. AE_OK if object is OK or was repaired successfully
593 *
594 * DESCRIPTION: Repair for the _CST object:
595 * 1. Sort the list ascending by C state type
596 * 2. Ensure type cannot be zero
597 * 3. A subpackage count of zero means _CST is meaningless
598 * 4. Count must match the number of C state subpackages
599 *
600 *****************************************************************************/
601
602 static ACPI_STATUS
AcpiNsRepair_CST(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)603 AcpiNsRepair_CST (
604 ACPI_EVALUATE_INFO *Info,
605 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
606 {
607 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
608 ACPI_OPERAND_OBJECT **OuterElements;
609 UINT32 OuterElementCount;
610 ACPI_OPERAND_OBJECT *ObjDesc;
611 ACPI_STATUS Status;
612 BOOLEAN Removing;
613 UINT32 i;
614
615
616 ACPI_FUNCTION_NAME (NsRepair_CST);
617
618
619 /*
620 * Check if the C-state type values are proportional.
621 */
622 OuterElementCount = ReturnObject->Package.Count - 1;
623 i = 0;
624 while (i < OuterElementCount)
625 {
626 OuterElements = &ReturnObject->Package.Elements[i + 1];
627 Removing = FALSE;
628
629 if ((*OuterElements)->Package.Count == 0)
630 {
631 ACPI_WARN_PREDEFINED ((AE_INFO,
632 Info->FullPathname, Info->NodeFlags,
633 "SubPackage[%u] - removing entry due to zero count", i));
634 Removing = TRUE;
635 goto RemoveElement;
636 }
637
638 ObjDesc = (*OuterElements)->Package.Elements[1]; /* Index1 = Type */
639 if ((UINT32) ObjDesc->Integer.Value == 0)
640 {
641 ACPI_WARN_PREDEFINED ((AE_INFO,
642 Info->FullPathname, Info->NodeFlags,
643 "SubPackage[%u] - removing entry due to invalid Type(0)", i));
644 Removing = TRUE;
645 }
646
647 RemoveElement:
648 if (Removing)
649 {
650 AcpiNsRemoveElement (ReturnObject, i + 1);
651 OuterElementCount--;
652 }
653 else
654 {
655 i++;
656 }
657 }
658
659 /* Update top-level package count, Type "Integer" checked elsewhere */
660
661 ObjDesc = ReturnObject->Package.Elements[0];
662 ObjDesc->Integer.Value = OuterElementCount;
663
664 /*
665 * Entries (subpackages) in the _CST Package must be sorted by the
666 * C-state type, in ascending order.
667 */
668 Status = AcpiNsCheckSortedList (Info, ReturnObject, 1, 4, 1,
669 ACPI_SORT_ASCENDING, "C-State Type");
670 if (ACPI_FAILURE (Status))
671 {
672 return (Status);
673 }
674
675 return (AE_OK);
676 }
677
678
679 /******************************************************************************
680 *
681 * FUNCTION: AcpiNsRepair_HID
682 *
683 * PARAMETERS: Info - Method execution information block
684 * ReturnObjectPtr - Pointer to the object returned from the
685 * evaluation of a method or object
686 *
687 * RETURN: Status. AE_OK if object is OK or was repaired successfully
688 *
689 * DESCRIPTION: Repair for the _HID object. If a string, ensure that all
690 * letters are uppercase and that there is no leading asterisk.
691 *
692 *****************************************************************************/
693
694 static ACPI_STATUS
AcpiNsRepair_HID(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)695 AcpiNsRepair_HID (
696 ACPI_EVALUATE_INFO *Info,
697 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
698 {
699 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
700 ACPI_OPERAND_OBJECT *NewString;
701 char *Source;
702 char *Dest;
703
704
705 ACPI_FUNCTION_NAME (NsRepair_HID);
706
707
708 /* We only care about string _HID objects (not integers) */
709
710 if (ReturnObject->Common.Type != ACPI_TYPE_STRING)
711 {
712 return_ACPI_STATUS (AE_OK);
713 }
714
715 if (ReturnObject->String.Length == 0)
716 {
717 ACPI_WARN_PREDEFINED ((AE_INFO,
718 Info->FullPathname, Info->NodeFlags,
719 "Invalid zero-length _HID or _CID string"));
720
721 /* Return AE_OK anyway, let driver handle it */
722
723 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
724 return_ACPI_STATUS (AE_OK);
725 }
726
727 /* It is simplest to always create a new string object */
728
729 NewString = AcpiUtCreateStringObject (ReturnObject->String.Length);
730 if (!NewString)
731 {
732 return_ACPI_STATUS (AE_NO_MEMORY);
733 }
734
735 /*
736 * Remove a leading asterisk if present. For some unknown reason, there
737 * are many machines in the field that contains IDs like this.
738 *
739 * Examples: "*PNP0C03", "*ACPI0003"
740 */
741 Source = ReturnObject->String.Pointer;
742 if (*Source == '*')
743 {
744 Source++;
745 NewString->String.Length--;
746
747 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
748 "%s: Removed invalid leading asterisk\n", Info->FullPathname));
749 }
750
751 /*
752 * Copy and uppercase the string. From the ACPI 5.0 specification:
753 *
754 * A valid PNP ID must be of the form "AAA####" where A is an uppercase
755 * letter and # is a hex digit. A valid ACPI ID must be of the form
756 * "NNNN####" where N is an uppercase letter or decimal digit, and
757 * # is a hex digit.
758 */
759 for (Dest = NewString->String.Pointer; *Source; Dest++, Source++)
760 {
761 *Dest = (char) toupper ((int) *Source);
762 }
763
764 AcpiUtRemoveReference (ReturnObject);
765 *ReturnObjectPtr = NewString;
766 return_ACPI_STATUS (AE_OK);
767 }
768
769
770 /******************************************************************************
771 *
772 * FUNCTION: AcpiNsRepair_PRT
773 *
774 * PARAMETERS: Info - Method execution information block
775 * ReturnObjectPtr - Pointer to the object returned from the
776 * evaluation of a method or object
777 *
778 * RETURN: Status. AE_OK if object is OK or was repaired successfully
779 *
780 * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed
781 * SourceName and SourceIndex field, a common BIOS bug.
782 *
783 *****************************************************************************/
784
785 static ACPI_STATUS
AcpiNsRepair_PRT(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)786 AcpiNsRepair_PRT (
787 ACPI_EVALUATE_INFO *Info,
788 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
789 {
790 ACPI_OPERAND_OBJECT *PackageObject = *ReturnObjectPtr;
791 ACPI_OPERAND_OBJECT **TopObjectList;
792 ACPI_OPERAND_OBJECT **SubObjectList;
793 ACPI_OPERAND_OBJECT *ObjDesc;
794 ACPI_OPERAND_OBJECT *SubPackage;
795 UINT32 ElementCount;
796 UINT32 Index;
797
798
799 /* Each element in the _PRT package is a subpackage */
800
801 TopObjectList = PackageObject->Package.Elements;
802 ElementCount = PackageObject->Package.Count;
803
804 /* Examine each subpackage */
805
806 for (Index = 0; Index < ElementCount; Index++, TopObjectList++)
807 {
808 SubPackage = *TopObjectList;
809 SubObjectList = SubPackage->Package.Elements;
810
811 /* Check for minimum required element count */
812
813 if (SubPackage->Package.Count < 4)
814 {
815 continue;
816 }
817
818 /*
819 * If the BIOS has erroneously reversed the _PRT SourceName (index 2)
820 * and the SourceIndex (index 3), fix it. _PRT is important enough to
821 * workaround this BIOS error. This also provides compatibility with
822 * other ACPI implementations.
823 */
824 ObjDesc = SubObjectList[3];
825 if (!ObjDesc || (ObjDesc->Common.Type != ACPI_TYPE_INTEGER))
826 {
827 SubObjectList[3] = SubObjectList[2];
828 SubObjectList[2] = ObjDesc;
829 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
830
831 ACPI_WARN_PREDEFINED ((AE_INFO,
832 Info->FullPathname, Info->NodeFlags,
833 "PRT[%X]: Fixed reversed SourceName and SourceIndex",
834 Index));
835 }
836 }
837
838 return (AE_OK);
839 }
840
841
842 /******************************************************************************
843 *
844 * FUNCTION: AcpiNsRepair_PSS
845 *
846 * PARAMETERS: Info - Method execution information block
847 * ReturnObjectPtr - Pointer to the object returned from the
848 * evaluation of a method or object
849 *
850 * RETURN: Status. AE_OK if object is OK or was repaired successfully
851 *
852 * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list
853 * by the CPU frequencies. Check that the power dissipation values
854 * are all proportional to CPU frequency (i.e., sorting by
855 * frequency should be the same as sorting by power.)
856 *
857 *****************************************************************************/
858
859 static ACPI_STATUS
AcpiNsRepair_PSS(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)860 AcpiNsRepair_PSS (
861 ACPI_EVALUATE_INFO *Info,
862 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
863 {
864 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
865 ACPI_OPERAND_OBJECT **OuterElements;
866 UINT32 OuterElementCount;
867 ACPI_OPERAND_OBJECT **Elements;
868 ACPI_OPERAND_OBJECT *ObjDesc;
869 UINT32 PreviousValue;
870 ACPI_STATUS Status;
871 UINT32 i;
872
873
874 /*
875 * Entries (subpackages) in the _PSS Package must be sorted by power
876 * dissipation, in descending order. If it appears that the list is
877 * incorrectly sorted, sort it. We sort by CpuFrequency, since this
878 * should be proportional to the power.
879 */
880 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 6, 0,
881 ACPI_SORT_DESCENDING, "CpuFrequency");
882 if (ACPI_FAILURE (Status))
883 {
884 return (Status);
885 }
886
887 /*
888 * We now know the list is correctly sorted by CPU frequency. Check if
889 * the power dissipation values are proportional.
890 */
891 PreviousValue = ACPI_UINT32_MAX;
892 OuterElements = ReturnObject->Package.Elements;
893 OuterElementCount = ReturnObject->Package.Count;
894
895 for (i = 0; i < OuterElementCount; i++)
896 {
897 Elements = (*OuterElements)->Package.Elements;
898 ObjDesc = Elements[1]; /* Index1 = PowerDissipation */
899
900 if ((UINT32) ObjDesc->Integer.Value > PreviousValue)
901 {
902 ACPI_WARN_PREDEFINED ((AE_INFO,
903 Info->FullPathname, Info->NodeFlags,
904 "SubPackage[%u,%u] - suspicious power dissipation values",
905 i-1, i));
906 }
907
908 PreviousValue = (UINT32) ObjDesc->Integer.Value;
909 OuterElements++;
910 }
911
912 return (AE_OK);
913 }
914
915
916 /******************************************************************************
917 *
918 * FUNCTION: AcpiNsRepair_TSS
919 *
920 * PARAMETERS: Info - Method execution information block
921 * ReturnObjectPtr - Pointer to the object returned from the
922 * evaluation of a method or object
923 *
924 * RETURN: Status. AE_OK if object is OK or was repaired successfully
925 *
926 * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
927 * descending by the power dissipation values.
928 *
929 *****************************************************************************/
930
931 static ACPI_STATUS
AcpiNsRepair_TSS(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT ** ReturnObjectPtr)932 AcpiNsRepair_TSS (
933 ACPI_EVALUATE_INFO *Info,
934 ACPI_OPERAND_OBJECT **ReturnObjectPtr)
935 {
936 ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
937 ACPI_STATUS Status;
938 ACPI_NAMESPACE_NODE *Node;
939
940
941 /*
942 * We can only sort the _TSS return package if there is no _PSS in the
943 * same scope. This is because if _PSS is present, the ACPI specification
944 * dictates that the _TSS Power Dissipation field is to be ignored, and
945 * therefore some BIOSs leave garbage values in the _TSS Power field(s).
946 * In this case, it is best to just return the _TSS package as-is.
947 * (May, 2011)
948 */
949 Status = AcpiNsGetNode (Info->Node, "^_PSS",
950 ACPI_NS_NO_UPSEARCH, &Node);
951 if (ACPI_SUCCESS (Status))
952 {
953 return (AE_OK);
954 }
955
956 Status = AcpiNsCheckSortedList (Info, ReturnObject, 0, 5, 1,
957 ACPI_SORT_DESCENDING, "PowerDissipation");
958
959 return (Status);
960 }
961
962
963 /******************************************************************************
964 *
965 * FUNCTION: AcpiNsCheckSortedList
966 *
967 * PARAMETERS: Info - Method execution information block
968 * ReturnObject - Pointer to the top-level returned object
969 * StartIndex - Index of the first subpackage
970 * ExpectedCount - Minimum length of each subpackage
971 * SortIndex - Subpackage entry to sort on
972 * SortDirection - Ascending or descending
973 * SortKeyName - Name of the SortIndex field
974 *
975 * RETURN: Status. AE_OK if the list is valid and is sorted correctly or
976 * has been repaired by sorting the list.
977 *
978 * DESCRIPTION: Check if the package list is valid and sorted correctly by the
979 * SortIndex. If not, then sort the list.
980 *
981 *****************************************************************************/
982
983 static ACPI_STATUS
AcpiNsCheckSortedList(ACPI_EVALUATE_INFO * Info,ACPI_OPERAND_OBJECT * ReturnObject,UINT32 StartIndex,UINT32 ExpectedCount,UINT32 SortIndex,UINT8 SortDirection,char * SortKeyName)984 AcpiNsCheckSortedList (
985 ACPI_EVALUATE_INFO *Info,
986 ACPI_OPERAND_OBJECT *ReturnObject,
987 UINT32 StartIndex,
988 UINT32 ExpectedCount,
989 UINT32 SortIndex,
990 UINT8 SortDirection,
991 char *SortKeyName)
992 {
993 UINT32 OuterElementCount;
994 ACPI_OPERAND_OBJECT **OuterElements;
995 ACPI_OPERAND_OBJECT **Elements;
996 ACPI_OPERAND_OBJECT *ObjDesc;
997 UINT32 i;
998 UINT32 PreviousValue;
999
1000
1001 ACPI_FUNCTION_NAME (NsCheckSortedList);
1002
1003
1004 /* The top-level object must be a package */
1005
1006 if (ReturnObject->Common.Type != ACPI_TYPE_PACKAGE)
1007 {
1008 return (AE_AML_OPERAND_TYPE);
1009 }
1010
1011 /*
1012 * NOTE: assumes list of subpackages contains no NULL elements.
1013 * Any NULL elements should have been removed by earlier call
1014 * to AcpiNsRemoveNullElements.
1015 */
1016 OuterElementCount = ReturnObject->Package.Count;
1017 if (!OuterElementCount || StartIndex >= OuterElementCount)
1018 {
1019 return (AE_AML_PACKAGE_LIMIT);
1020 }
1021
1022 OuterElements = &ReturnObject->Package.Elements[StartIndex];
1023 OuterElementCount -= StartIndex;
1024
1025 PreviousValue = 0;
1026 if (SortDirection == ACPI_SORT_DESCENDING)
1027 {
1028 PreviousValue = ACPI_UINT32_MAX;
1029 }
1030
1031 /* Examine each subpackage */
1032
1033 for (i = 0; i < OuterElementCount; i++)
1034 {
1035 /* Each element of the top-level package must also be a package */
1036
1037 if ((*OuterElements)->Common.Type != ACPI_TYPE_PACKAGE)
1038 {
1039 return (AE_AML_OPERAND_TYPE);
1040 }
1041
1042 /* Each subpackage must have the minimum length */
1043
1044 if ((*OuterElements)->Package.Count < ExpectedCount)
1045 {
1046 return (AE_AML_PACKAGE_LIMIT);
1047 }
1048
1049 Elements = (*OuterElements)->Package.Elements;
1050 ObjDesc = Elements[SortIndex];
1051
1052 if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
1053 {
1054 return (AE_AML_OPERAND_TYPE);
1055 }
1056
1057 /*
1058 * The list must be sorted in the specified order. If we detect a
1059 * discrepancy, sort the entire list.
1060 */
1061 if (((SortDirection == ACPI_SORT_ASCENDING) &&
1062 (ObjDesc->Integer.Value < PreviousValue)) ||
1063 ((SortDirection == ACPI_SORT_DESCENDING) &&
1064 (ObjDesc->Integer.Value > PreviousValue)))
1065 {
1066 AcpiNsSortList (&ReturnObject->Package.Elements[StartIndex],
1067 OuterElementCount, SortIndex, SortDirection);
1068
1069 Info->ReturnFlags |= ACPI_OBJECT_REPAIRED;
1070
1071 ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
1072 "%s: Repaired unsorted list - now sorted by %s\n",
1073 Info->FullPathname, SortKeyName));
1074 return (AE_OK);
1075 }
1076
1077 PreviousValue = (UINT32) ObjDesc->Integer.Value;
1078 OuterElements++;
1079 }
1080
1081 return (AE_OK);
1082 }
1083
1084
1085 /******************************************************************************
1086 *
1087 * FUNCTION: AcpiNsSortList
1088 *
1089 * PARAMETERS: Elements - Package object element list
1090 * Count - Element count for above
1091 * Index - Sort by which package element
1092 * SortDirection - Ascending or Descending sort
1093 *
1094 * RETURN: None
1095 *
1096 * DESCRIPTION: Sort the objects that are in a package element list.
1097 *
1098 * NOTE: Assumes that all NULL elements have been removed from the package,
1099 * and that all elements have been verified to be of type Integer.
1100 *
1101 *****************************************************************************/
1102
1103 static void
AcpiNsSortList(ACPI_OPERAND_OBJECT ** Elements,UINT32 Count,UINT32 Index,UINT8 SortDirection)1104 AcpiNsSortList (
1105 ACPI_OPERAND_OBJECT **Elements,
1106 UINT32 Count,
1107 UINT32 Index,
1108 UINT8 SortDirection)
1109 {
1110 ACPI_OPERAND_OBJECT *ObjDesc1;
1111 ACPI_OPERAND_OBJECT *ObjDesc2;
1112 ACPI_OPERAND_OBJECT *TempObj;
1113 UINT32 i;
1114 UINT32 j;
1115
1116
1117 /* Simple bubble sort */
1118
1119 for (i = 1; i < Count; i++)
1120 {
1121 for (j = (Count - 1); j >= i; j--)
1122 {
1123 ObjDesc1 = Elements[j-1]->Package.Elements[Index];
1124 ObjDesc2 = Elements[j]->Package.Elements[Index];
1125
1126 if (((SortDirection == ACPI_SORT_ASCENDING) &&
1127 (ObjDesc1->Integer.Value > ObjDesc2->Integer.Value)) ||
1128
1129 ((SortDirection == ACPI_SORT_DESCENDING) &&
1130 (ObjDesc1->Integer.Value < ObjDesc2->Integer.Value)))
1131 {
1132 TempObj = Elements[j-1];
1133 Elements[j-1] = Elements[j];
1134 Elements[j] = TempObj;
1135 }
1136 }
1137 }
1138 }
1139
1140
1141 /******************************************************************************
1142 *
1143 * FUNCTION: AcpiNsRemoveElement
1144 *
1145 * PARAMETERS: ObjDesc - Package object element list
1146 * Index - Index of element to remove
1147 *
1148 * RETURN: None
1149 *
1150 * DESCRIPTION: Remove the requested element of a package and delete it.
1151 *
1152 *****************************************************************************/
1153
1154 static void
AcpiNsRemoveElement(ACPI_OPERAND_OBJECT * ObjDesc,UINT32 Index)1155 AcpiNsRemoveElement (
1156 ACPI_OPERAND_OBJECT *ObjDesc,
1157 UINT32 Index)
1158 {
1159 ACPI_OPERAND_OBJECT **Source;
1160 ACPI_OPERAND_OBJECT **Dest;
1161 UINT32 Count;
1162 UINT32 NewCount;
1163 UINT32 i;
1164
1165
1166 ACPI_FUNCTION_NAME (NsRemoveElement);
1167
1168
1169 Count = ObjDesc->Package.Count;
1170 NewCount = Count - 1;
1171
1172 Source = ObjDesc->Package.Elements;
1173 Dest = Source;
1174
1175 /* Examine all elements of the package object, remove matched index */
1176
1177 for (i = 0; i < Count; i++)
1178 {
1179 if (i == Index)
1180 {
1181 AcpiUtRemoveReference (*Source); /* Remove one ref for being in pkg */
1182 AcpiUtRemoveReference (*Source);
1183 }
1184 else
1185 {
1186 *Dest = *Source;
1187 Dest++;
1188 }
1189
1190 Source++;
1191 }
1192
1193 /* NULL terminate list and update the package count */
1194
1195 *Dest = NULL;
1196 ObjDesc->Package.Count = NewCount;
1197 }
1198