dtutils.c revision 281075 
1/******************************************************************************
2 *
3 * Module Name: dtutils.c - Utility routines for the data table compiler
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2015, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions, and the following disclaimer,
16 *    without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 *    substantially similar to the "NO WARRANTY" disclaimer below
19 *    ("Disclaimer") and any redistribution must be conditioned upon
20 *    including a substantially similar Disclaimer requirement for further
21 *    binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 *    of any contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include <contrib/dev/acpica/compiler/aslcompiler.h>
45#include <contrib/dev/acpica/compiler/dtcompiler.h>
46#include <contrib/dev/acpica/include/actables.h>
47
48#define _COMPONENT          DT_COMPILER
49        ACPI_MODULE_NAME    ("dtutils")
50
51/* Local prototypes */
52
53static void
54DtSum (
55    DT_SUBTABLE             *Subtable,
56    void                    *Context,
57    void                    *ReturnValue);
58
59
60/******************************************************************************
61 *
62 * FUNCTION:    DtError
63 *
64 * PARAMETERS:  Level               - Seriousness (Warning/error, etc.)
65 *              MessageId           - Index into global message buffer
66 *              Op                  - Parse node where error happened
67 *              ExtraMessage        - additional error message
68 *
69 * RETURN:      None
70 *
71 * DESCRIPTION: Common error interface for data table compiler
72 *
73 *****************************************************************************/
74
75void
76DtError (
77    UINT8                   Level,
78    UINT16                  MessageId,
79    DT_FIELD                *FieldObject,
80    char                    *ExtraMessage)
81{
82
83    /* Check if user wants to ignore this exception */
84
85    if (AslIsExceptionDisabled (Level, MessageId))
86    {
87        return;
88    }
89
90    if (FieldObject)
91    {
92        AslCommonError (Level, MessageId,
93            FieldObject->Line,
94            FieldObject->Line,
95            FieldObject->ByteOffset,
96            FieldObject->Column,
97            Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
98    }
99    else
100    {
101        AslCommonError (Level, MessageId, 0,
102            0, 0, 0, 0, ExtraMessage);
103    }
104}
105
106
107/******************************************************************************
108 *
109 * FUNCTION:    DtNameError
110 *
111 * PARAMETERS:  Level               - Seriousness (Warning/error, etc.)
112 *              MessageId           - Index into global message buffer
113 *              Op                  - Parse node where error happened
114 *              ExtraMessage        - additional error message
115 *
116 * RETURN:      None
117 *
118 * DESCRIPTION: Error interface for named objects
119 *
120 *****************************************************************************/
121
122void
123DtNameError (
124    UINT8                   Level,
125    UINT16                  MessageId,
126    DT_FIELD                *FieldObject,
127    char                    *ExtraMessage)
128{
129
130    switch (Level)
131    {
132    case ASL_WARNING2:
133    case ASL_WARNING3:
134
135        if (Gbl_WarningLevel < Level)
136        {
137            return;
138        }
139        break;
140
141    default:
142
143        break;
144    }
145
146    if (FieldObject)
147    {
148        AslCommonError (Level, MessageId,
149            FieldObject->Line,
150            FieldObject->Line,
151            FieldObject->ByteOffset,
152            FieldObject->NameColumn,
153            Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
154    }
155    else
156    {
157        AslCommonError (Level, MessageId, 0,
158            0, 0, 0, 0, ExtraMessage);
159    }
160}
161
162
163/*******************************************************************************
164 *
165 * FUNCTION:    DtFatal
166 *
167 * PARAMETERS:  None
168 *
169 * RETURN:      None
170 *
171 * DESCRIPTION: Dump the error log and abort the compiler. Used for serious
172 *              compile or I/O errors
173 *
174 ******************************************************************************/
175
176void
177DtFatal (
178    UINT16                  MessageId,
179    DT_FIELD                *FieldObject,
180    char                    *ExtraMessage)
181{
182
183    DtError (ASL_ERROR, MessageId, FieldObject, ExtraMessage);
184
185/*
186 * TBD: remove this entire function, DtFatal
187 *
188 * We cannot abort the compiler on error, because we may be compiling a
189 * list of files. We must move on to the next file.
190 */
191#ifdef __OBSOLETE
192    CmCleanupAndExit ();
193    exit (1);
194#endif
195}
196
197
198/******************************************************************************
199 *
200 * FUNCTION:    DtStrtoul64
201 *
202 * PARAMETERS:  String              - Null terminated string
203 *              ReturnInteger       - Where the converted integer is returned
204 *
205 * RETURN:      Status
206 *
207 * DESCRIPTION: Simple conversion of a string hex integer constant to unsigned
208 *              value. Assumes no leading "0x" for the constant.
209 *
210 * Portability note: The reason this function exists is because a 64-bit
211 * sscanf is not available in all environments.
212 *
213 *****************************************************************************/
214
215ACPI_STATUS
216DtStrtoul64 (
217    char                    *String,
218    UINT64                  *ReturnInteger)
219{
220    char                    *ThisChar = String;
221    UINT32                  ThisDigit;
222    UINT64                  ReturnValue = 0;
223    int                     DigitCount = 0;
224
225
226    /* Skip over any white space in the buffer */
227
228    while ((*ThisChar == ' ') || (*ThisChar == '\t'))
229    {
230        ThisChar++;
231    }
232
233    /* Skip leading zeros */
234
235    while ((*ThisChar) == '0')
236    {
237        ThisChar++;
238    }
239
240    /* Convert character-by-character */
241
242    while (*ThisChar)
243    {
244        if (ACPI_IS_DIGIT (*ThisChar))
245        {
246            /* Convert ASCII 0-9 to Decimal value */
247
248            ThisDigit = ((UINT8) *ThisChar) - '0';
249        }
250        else /* Letter */
251        {
252            ThisDigit = (UINT32) ACPI_TOUPPER (*ThisChar);
253            if (!ACPI_IS_XDIGIT ((char) ThisDigit))
254            {
255                /* Not A-F */
256
257                return (AE_BAD_CHARACTER);
258            }
259
260            /* Convert ASCII Hex char (A-F) to value */
261
262            ThisDigit = (ThisDigit - 'A') + 10;
263        }
264
265        /* Insert the 4-bit hex digit */
266
267        ReturnValue <<= 4;
268        ReturnValue += ThisDigit;
269
270        ThisChar++;
271        DigitCount++;
272        if (DigitCount > 16)
273        {
274            /* Value is too large (> 64 bits/8 bytes/16 hex digits) */
275
276            return (AE_LIMIT);
277        }
278    }
279
280    *ReturnInteger = ReturnValue;
281    return (AE_OK);
282}
283
284
285/******************************************************************************
286 *
287 * FUNCTION:    DtGetFieldValue
288 *
289 * PARAMETERS:  Field               - Current field list pointer
290 *
291 * RETURN:      Field value
292 *
293 * DESCRIPTION: Get field value
294 *
295 *****************************************************************************/
296
297char *
298DtGetFieldValue (
299    DT_FIELD                *Field)
300{
301    if (!Field)
302    {
303        return (NULL);
304    }
305
306    return (Field->Value);
307}
308
309
310/******************************************************************************
311 *
312 * FUNCTION:    DtGetFieldType
313 *
314 * PARAMETERS:  Info                - Data table info
315 *
316 * RETURN:      Field type
317 *
318 * DESCRIPTION: Get field type
319 *
320 *****************************************************************************/
321
322UINT8
323DtGetFieldType (
324    ACPI_DMTABLE_INFO       *Info)
325{
326    UINT8                   Type;
327
328
329    /* DT_FLAG means that this is the start of a block of flag bits */
330    /* TBD - we can make these a separate opcode later */
331
332    if (Info->Flags & DT_FLAG)
333    {
334        return (DT_FIELD_TYPE_FLAGS_INTEGER);
335    }
336
337    /* Type is based upon the opcode for this field in the info table */
338
339    switch (Info->Opcode)
340    {
341    case ACPI_DMT_FLAG0:
342    case ACPI_DMT_FLAG1:
343    case ACPI_DMT_FLAG2:
344    case ACPI_DMT_FLAG3:
345    case ACPI_DMT_FLAG4:
346    case ACPI_DMT_FLAG5:
347    case ACPI_DMT_FLAG6:
348    case ACPI_DMT_FLAG7:
349    case ACPI_DMT_FLAGS0:
350    case ACPI_DMT_FLAGS1:
351    case ACPI_DMT_FLAGS2:
352    case ACPI_DMT_FLAGS4:
353
354        Type = DT_FIELD_TYPE_FLAG;
355        break;
356
357    case ACPI_DMT_NAME4:
358    case ACPI_DMT_SIG:
359    case ACPI_DMT_NAME6:
360    case ACPI_DMT_NAME8:
361    case ACPI_DMT_STRING:
362
363        Type = DT_FIELD_TYPE_STRING;
364        break;
365
366    case ACPI_DMT_BUFFER:
367    case ACPI_DMT_BUF7:
368    case ACPI_DMT_BUF10:
369    case ACPI_DMT_BUF16:
370    case ACPI_DMT_BUF128:
371    case ACPI_DMT_PCI_PATH:
372
373        Type = DT_FIELD_TYPE_BUFFER;
374        break;
375
376    case ACPI_DMT_GAS:
377    case ACPI_DMT_HESTNTFY:
378
379        Type = DT_FIELD_TYPE_INLINE_SUBTABLE;
380        break;
381
382    case ACPI_DMT_UNICODE:
383
384        Type = DT_FIELD_TYPE_UNICODE;
385        break;
386
387    case ACPI_DMT_UUID:
388
389        Type = DT_FIELD_TYPE_UUID;
390        break;
391
392    case ACPI_DMT_DEVICE_PATH:
393
394        Type = DT_FIELD_TYPE_DEVICE_PATH;
395        break;
396
397    case ACPI_DMT_LABEL:
398
399        Type = DT_FIELD_TYPE_LABEL;
400        break;
401
402    default:
403
404        Type = DT_FIELD_TYPE_INTEGER;
405        break;
406    }
407
408    return (Type);
409}
410
411
412/******************************************************************************
413 *
414 * FUNCTION:    DtGetBufferLength
415 *
416 * PARAMETERS:  Buffer              - List of integers,
417 *                                    for example "10 3A 4F 2E"
418 *
419 * RETURN:      Count of integer
420 *
421 * DESCRIPTION: Get length of bytes needed to store the integers
422 *
423 *****************************************************************************/
424
425UINT32
426DtGetBufferLength (
427    char                    *Buffer)
428{
429    UINT32                  ByteLength = 0;
430
431
432    while (*Buffer)
433    {
434        if (*Buffer == ' ')
435        {
436            ByteLength++;
437
438            while (*Buffer == ' ')
439            {
440                Buffer++;
441            }
442        }
443
444        Buffer++;
445    }
446
447    return (++ByteLength);
448}
449
450
451/******************************************************************************
452 *
453 * FUNCTION:    DtGetFieldLength
454 *
455 * PARAMETERS:  Field               - Current field
456 *              Info                - Data table info
457 *
458 * RETURN:      Field length
459 *
460 * DESCRIPTION: Get length of bytes needed to compile the field
461 *
462 * Note: This function must remain in sync with AcpiDmDumpTable.
463 *
464 *****************************************************************************/
465
466UINT32
467DtGetFieldLength (
468    DT_FIELD                *Field,
469    ACPI_DMTABLE_INFO       *Info)
470{
471    UINT32                  ByteLength = 0;
472    char                    *Value;
473
474
475    /* Length is based upon the opcode for this field in the info table */
476
477    switch (Info->Opcode)
478    {
479    case ACPI_DMT_FLAG0:
480    case ACPI_DMT_FLAG1:
481    case ACPI_DMT_FLAG2:
482    case ACPI_DMT_FLAG3:
483    case ACPI_DMT_FLAG4:
484    case ACPI_DMT_FLAG5:
485    case ACPI_DMT_FLAG6:
486    case ACPI_DMT_FLAG7:
487    case ACPI_DMT_FLAGS0:
488    case ACPI_DMT_FLAGS1:
489    case ACPI_DMT_FLAGS2:
490    case ACPI_DMT_FLAGS4:
491    case ACPI_DMT_LABEL:
492    case ACPI_DMT_EXTRA_TEXT:
493
494        ByteLength = 0;
495        break;
496
497    case ACPI_DMT_UINT8:
498    case ACPI_DMT_CHKSUM:
499    case ACPI_DMT_SPACEID:
500    case ACPI_DMT_ACCWIDTH:
501    case ACPI_DMT_IVRS:
502    case ACPI_DMT_GTDT:
503    case ACPI_DMT_MADT:
504    case ACPI_DMT_PCCT:
505    case ACPI_DMT_PMTT:
506    case ACPI_DMT_SRAT:
507    case ACPI_DMT_ASF:
508    case ACPI_DMT_HESTNTYP:
509    case ACPI_DMT_FADTPM:
510    case ACPI_DMT_EINJACT:
511    case ACPI_DMT_EINJINST:
512    case ACPI_DMT_ERSTACT:
513    case ACPI_DMT_ERSTINST:
514    case ACPI_DMT_DMAR_SCOPE:
515
516        ByteLength = 1;
517        break;
518
519    case ACPI_DMT_UINT16:
520    case ACPI_DMT_DMAR:
521    case ACPI_DMT_HEST:
522    case ACPI_DMT_PCI_PATH:
523
524        ByteLength = 2;
525        break;
526
527    case ACPI_DMT_UINT24:
528
529        ByteLength = 3;
530        break;
531
532    case ACPI_DMT_UINT32:
533    case ACPI_DMT_NAME4:
534    case ACPI_DMT_SLIC:
535    case ACPI_DMT_SIG:
536    case ACPI_DMT_LPIT:
537
538        ByteLength = 4;
539        break;
540
541    case ACPI_DMT_UINT40:
542
543        ByteLength = 5;
544        break;
545
546    case ACPI_DMT_UINT48:
547    case ACPI_DMT_NAME6:
548
549        ByteLength = 6;
550        break;
551
552    case ACPI_DMT_UINT56:
553    case ACPI_DMT_BUF7:
554
555        ByteLength = 7;
556        break;
557
558    case ACPI_DMT_UINT64:
559    case ACPI_DMT_NAME8:
560
561        ByteLength = 8;
562        break;
563
564    case ACPI_DMT_STRING:
565
566        Value = DtGetFieldValue (Field);
567        if (Value)
568        {
569            ByteLength = ACPI_STRLEN (Value) + 1;
570        }
571        else
572        {   /* At this point, this is a fatal error */
573
574            sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
575            DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
576            return (0);
577        }
578        break;
579
580    case ACPI_DMT_GAS:
581
582        ByteLength = sizeof (ACPI_GENERIC_ADDRESS);
583        break;
584
585    case ACPI_DMT_HESTNTFY:
586
587        ByteLength = sizeof (ACPI_HEST_NOTIFY);
588        break;
589
590    case ACPI_DMT_BUFFER:
591
592        Value = DtGetFieldValue (Field);
593        if (Value)
594        {
595            ByteLength = DtGetBufferLength (Value);
596        }
597        else
598        {   /* At this point, this is a fatal error */
599
600            sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
601            DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
602            return (0);
603        }
604        break;
605
606    case ACPI_DMT_BUF10:
607
608        ByteLength = 10;
609        break;
610
611    case ACPI_DMT_BUF16:
612    case ACPI_DMT_UUID:
613
614        ByteLength = 16;
615        break;
616
617    case ACPI_DMT_BUF128:
618
619        ByteLength = 128;
620        break;
621
622    case ACPI_DMT_UNICODE:
623
624        Value = DtGetFieldValue (Field);
625
626        /* TBD: error if Value is NULL? (as below?) */
627
628        ByteLength = (ACPI_STRLEN (Value) + 1) * sizeof(UINT16);
629        break;
630
631    default:
632
633        DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid table opcode");
634        return (0);
635    }
636
637    return (ByteLength);
638}
639
640
641/******************************************************************************
642 *
643 * FUNCTION:    DtSum
644 *
645 * PARAMETERS:  DT_WALK_CALLBACK:
646 *              Subtable            - Subtable
647 *              Context             - Unused
648 *              ReturnValue         - Store the checksum of subtable
649 *
650 * RETURN:      Status
651 *
652 * DESCRIPTION: Get the checksum of subtable
653 *
654 *****************************************************************************/
655
656static void
657DtSum (
658    DT_SUBTABLE             *Subtable,
659    void                    *Context,
660    void                    *ReturnValue)
661{
662    UINT8                   Checksum;
663    UINT8                   *Sum = ReturnValue;
664
665
666    Checksum = AcpiTbChecksum (Subtable->Buffer, Subtable->Length);
667    *Sum = (UINT8) (*Sum + Checksum);
668}
669
670
671/******************************************************************************
672 *
673 * FUNCTION:    DtSetTableChecksum
674 *
675 * PARAMETERS:  ChecksumPointer     - Where to return the checksum
676 *
677 * RETURN:      None
678 *
679 * DESCRIPTION: Set checksum of the whole data table into the checksum field
680 *
681 *****************************************************************************/
682
683void
684DtSetTableChecksum (
685    UINT8                   *ChecksumPointer)
686{
687    UINT8                   Checksum = 0;
688    UINT8                   OldSum;
689
690
691    DtWalkTableTree (Gbl_RootTable, DtSum, NULL, &Checksum);
692
693    OldSum = *ChecksumPointer;
694    Checksum = (UINT8) (Checksum - OldSum);
695
696    /* Compute the final checksum */
697
698    Checksum = (UINT8) (0 - Checksum);
699    *ChecksumPointer = Checksum;
700}
701
702
703/******************************************************************************
704 *
705 * FUNCTION:    DtSetTableLength
706 *
707 * PARAMETERS:  None
708 *
709 * RETURN:      None
710 *
711 * DESCRIPTION: Walk the subtables and set all the length fields
712 *
713 *****************************************************************************/
714
715void
716DtSetTableLength (
717    void)
718{
719    DT_SUBTABLE             *ParentTable;
720    DT_SUBTABLE             *ChildTable;
721
722
723    ParentTable = Gbl_RootTable;
724    ChildTable = NULL;
725
726    if (!ParentTable)
727    {
728        return;
729    }
730
731    DtSetSubtableLength (ParentTable);
732
733    while (1)
734    {
735        ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
736        if (ChildTable)
737        {
738            if (ChildTable->LengthField)
739            {
740                DtSetSubtableLength (ChildTable);
741            }
742
743            if (ChildTable->Child)
744            {
745                ParentTable = ChildTable;
746                ChildTable = NULL;
747            }
748            else
749            {
750                ParentTable->TotalLength += ChildTable->TotalLength;
751                if (ParentTable->LengthField)
752                {
753                    DtSetSubtableLength (ParentTable);
754                }
755            }
756        }
757        else
758        {
759            ChildTable = ParentTable;
760
761            if (ChildTable == Gbl_RootTable)
762            {
763                break;
764            }
765
766            ParentTable = DtGetParentSubtable (ParentTable);
767
768            ParentTable->TotalLength += ChildTable->TotalLength;
769            if (ParentTable->LengthField)
770            {
771                DtSetSubtableLength (ParentTable);
772            }
773        }
774    }
775}
776
777
778/******************************************************************************
779 *
780 * FUNCTION:    DtWalkTableTree
781 *
782 * PARAMETERS:  StartTable          - Subtable in the tree where walking begins
783 *              UserFunction        - Called during the walk
784 *              Context             - Passed to user function
785 *              ReturnValue         - The return value of UserFunction
786 *
787 * RETURN:      None
788 *
789 * DESCRIPTION: Performs a depth-first walk of the subtable tree
790 *
791 *****************************************************************************/
792
793void
794DtWalkTableTree (
795    DT_SUBTABLE             *StartTable,
796    DT_WALK_CALLBACK        UserFunction,
797    void                    *Context,
798    void                    *ReturnValue)
799{
800    DT_SUBTABLE             *ParentTable;
801    DT_SUBTABLE             *ChildTable;
802
803
804    ParentTable = StartTable;
805    ChildTable = NULL;
806
807    if (!ParentTable)
808    {
809        return;
810    }
811
812    UserFunction (ParentTable, Context, ReturnValue);
813
814    while (1)
815    {
816        ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
817        if (ChildTable)
818        {
819            UserFunction (ChildTable, Context, ReturnValue);
820
821            if (ChildTable->Child)
822            {
823                ParentTable = ChildTable;
824                ChildTable = NULL;
825            }
826        }
827        else
828        {
829            ChildTable = ParentTable;
830            if (ChildTable == Gbl_RootTable)
831            {
832                break;
833            }
834
835            ParentTable = DtGetParentSubtable (ParentTable);
836
837            if (ChildTable->Peer == StartTable)
838            {
839                break;
840            }
841        }
842    }
843}
844
845
846/*******************************************************************************
847 *
848 * FUNCTION:    UtSubtableCacheCalloc
849 *
850 * PARAMETERS:  None
851 *
852 * RETURN:      Pointer to the buffer. Aborts on allocation failure
853 *
854 * DESCRIPTION: Allocate a subtable object buffer. Bypass the local
855 *              dynamic memory manager for performance reasons (This has a
856 *              major impact on the speed of the compiler.)
857 *
858 ******************************************************************************/
859
860DT_SUBTABLE *
861UtSubtableCacheCalloc (
862    void)
863{
864    ASL_CACHE_INFO          *Cache;
865
866
867    if (Gbl_SubtableCacheNext >= Gbl_SubtableCacheLast)
868    {
869        /* Allocate a new buffer */
870
871        Cache = UtLocalCalloc (sizeof (Cache->Next) +
872            (sizeof (DT_SUBTABLE) * ASL_SUBTABLE_CACHE_SIZE));
873
874        /* Link new cache buffer to head of list */
875
876        Cache->Next = Gbl_SubtableCacheList;
877        Gbl_SubtableCacheList = Cache;
878
879        /* Setup cache management pointers */
880
881        Gbl_SubtableCacheNext = ACPI_CAST_PTR (DT_SUBTABLE, Cache->Buffer);
882        Gbl_SubtableCacheLast = Gbl_SubtableCacheNext + ASL_SUBTABLE_CACHE_SIZE;
883    }
884
885    Gbl_SubtableCount++;
886    return (Gbl_SubtableCacheNext++);
887}
888
889
890/*******************************************************************************
891 *
892 * FUNCTION:    UtFieldCacheCalloc
893 *
894 * PARAMETERS:  None
895 *
896 * RETURN:      Pointer to the buffer. Aborts on allocation failure
897 *
898 * DESCRIPTION: Allocate a field object buffer. Bypass the local
899 *              dynamic memory manager for performance reasons (This has a
900 *              major impact on the speed of the compiler.)
901 *
902 ******************************************************************************/
903
904DT_FIELD *
905UtFieldCacheCalloc (
906    void)
907{
908    ASL_CACHE_INFO          *Cache;
909
910
911    if (Gbl_FieldCacheNext >= Gbl_FieldCacheLast)
912    {
913        /* Allocate a new buffer */
914
915        Cache = UtLocalCalloc (sizeof (Cache->Next) +
916            (sizeof (DT_FIELD) * ASL_FIELD_CACHE_SIZE));
917
918        /* Link new cache buffer to head of list */
919
920        Cache->Next = Gbl_FieldCacheList;
921        Gbl_FieldCacheList = Cache;
922
923        /* Setup cache management pointers */
924
925        Gbl_FieldCacheNext = ACPI_CAST_PTR (DT_FIELD, Cache->Buffer);
926        Gbl_FieldCacheLast = Gbl_FieldCacheNext + ASL_FIELD_CACHE_SIZE;
927    }
928
929    Gbl_FieldCount++;
930    return (Gbl_FieldCacheNext++);
931}
932
933
934/*******************************************************************************
935 *
936 * FUNCTION:    DtDeleteCaches
937 *
938 * PARAMETERS:  None
939 *
940 * RETURN:      None
941 *
942 * DESCRIPTION: Delete all local cache buffer blocks
943 *
944 ******************************************************************************/
945
946void
947DtDeleteCaches (
948    void)
949{
950    UINT32                  BufferCount;
951    ASL_CACHE_INFO          *Next;
952
953
954    /* Field cache */
955
956    BufferCount = 0;
957    while (Gbl_FieldCacheList)
958    {
959        Next = Gbl_FieldCacheList->Next;
960        ACPI_FREE (Gbl_FieldCacheList);
961        Gbl_FieldCacheList = Next;
962        BufferCount++;
963    }
964
965    DbgPrint (ASL_DEBUG_OUTPUT,
966        "%u Fields, Buffer size: %u fields (%u bytes), %u Buffers\n",
967        Gbl_FieldCount, ASL_FIELD_CACHE_SIZE,
968        (sizeof (DT_FIELD) * ASL_FIELD_CACHE_SIZE), BufferCount);
969
970    Gbl_FieldCount = 0;
971    Gbl_FieldCacheNext = NULL;
972    Gbl_FieldCacheLast = NULL;
973
974    /* Subtable cache */
975
976    BufferCount = 0;
977    while (Gbl_SubtableCacheList)
978    {
979        Next = Gbl_SubtableCacheList->Next;
980        ACPI_FREE (Gbl_SubtableCacheList);
981        Gbl_SubtableCacheList = Next;
982        BufferCount++;
983    }
984
985    DbgPrint (ASL_DEBUG_OUTPUT,
986        "%u Subtables, Buffer size: %u subtables (%u bytes), %u Buffers\n",
987        Gbl_SubtableCount, ASL_SUBTABLE_CACHE_SIZE,
988        (sizeof (DT_SUBTABLE) * ASL_SUBTABLE_CACHE_SIZE), BufferCount);
989
990    Gbl_SubtableCount = 0;
991    Gbl_SubtableCacheNext = NULL;
992    Gbl_SubtableCacheLast = NULL;
993}
994