1 /******************************************************************************
2 *
3 * Module Name: dtutils.c - Utility routines for the data table compiler
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #include "aslcompiler.h"
153 #include "actables.h"
154
155 #define _COMPONENT DT_COMPILER
156 ACPI_MODULE_NAME ("dtutils")
157
158 /* Local prototypes */
159
160 static void
161 DtSum (
162 DT_SUBTABLE *Subtable,
163 void *Context,
164 void *ReturnValue);
165
166
167 /******************************************************************************
168 *
169 * FUNCTION: DtError
170 *
171 * PARAMETERS: Level - Seriousness (Warning/error, etc.)
172 * MessageId - Index into global message buffer
173 * Op - Parse node where error happened
174 * ExtraMessage - additional error message
175 *
176 * RETURN: None
177 *
178 * DESCRIPTION: Common error interface for data table compiler
179 *
180 *****************************************************************************/
181
182 void
DtError(UINT8 Level,UINT16 MessageId,DT_FIELD * FieldObject,char * ExtraMessage)183 DtError (
184 UINT8 Level,
185 UINT16 MessageId,
186 DT_FIELD *FieldObject,
187 char *ExtraMessage)
188 {
189
190 /* Check if user wants to ignore this exception */
191
192 if (AslIsExceptionIgnored (Level, MessageId))
193 {
194 return;
195 }
196
197 if (FieldObject)
198 {
199 AslCommonError (Level, MessageId,
200 FieldObject->Line,
201 FieldObject->Line,
202 FieldObject->ByteOffset,
203 FieldObject->Column,
204 Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
205 }
206 else
207 {
208 AslCommonError (Level, MessageId, 0,
209 0, 0, 0, 0, ExtraMessage);
210 }
211 }
212
213
214 /******************************************************************************
215 *
216 * FUNCTION: DtNameError
217 *
218 * PARAMETERS: Level - Seriousness (Warning/error, etc.)
219 * MessageId - Index into global message buffer
220 * Op - Parse node where error happened
221 * ExtraMessage - additional error message
222 *
223 * RETURN: None
224 *
225 * DESCRIPTION: Error interface for named objects
226 *
227 *****************************************************************************/
228
229 void
DtNameError(UINT8 Level,UINT16 MessageId,DT_FIELD * FieldObject,char * ExtraMessage)230 DtNameError (
231 UINT8 Level,
232 UINT16 MessageId,
233 DT_FIELD *FieldObject,
234 char *ExtraMessage)
235 {
236
237 switch (Level)
238 {
239 case ASL_WARNING2:
240 case ASL_WARNING3:
241
242 if (Gbl_WarningLevel < Level)
243 {
244 return;
245 }
246 break;
247
248 default:
249
250 break;
251 }
252
253 if (FieldObject)
254 {
255 AslCommonError (Level, MessageId,
256 FieldObject->Line,
257 FieldObject->Line,
258 FieldObject->ByteOffset,
259 FieldObject->NameColumn,
260 Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
261 }
262 else
263 {
264 AslCommonError (Level, MessageId, 0,
265 0, 0, 0, 0, ExtraMessage);
266 }
267 }
268
269
270 /*******************************************************************************
271 *
272 * FUNCTION: DtFatal
273 *
274 * PARAMETERS: None
275 *
276 * RETURN: None
277 *
278 * DESCRIPTION: Dump the error log and abort the compiler. Used for serious
279 * compile or I/O errors
280 *
281 ******************************************************************************/
282
283 void
DtFatal(UINT16 MessageId,DT_FIELD * FieldObject,char * ExtraMessage)284 DtFatal (
285 UINT16 MessageId,
286 DT_FIELD *FieldObject,
287 char *ExtraMessage)
288 {
289
290 DtError (ASL_ERROR, MessageId, FieldObject, ExtraMessage);
291
292 /*
293 * TBD: remove this entire function, DtFatal
294 *
295 * We cannot abort the compiler on error, because we may be compiling a
296 * list of files. We must move on to the next file.
297 */
298 #ifdef __OBSOLETE
299 CmCleanupAndExit ();
300 exit (1);
301 #endif
302 }
303
304
305 /*******************************************************************************
306 *
307 * FUNCTION: DtDoConstant
308 *
309 * PARAMETERS: String - Only hex constants are supported,
310 * regardless of whether the 0x prefix
311 * is used
312 *
313 * RETURN: Converted Integer
314 *
315 * DESCRIPTION: Convert a string to an integer, with overflow/error checking.
316 *
317 ******************************************************************************/
318
319 UINT64
DtDoConstant(char * String)320 DtDoConstant (
321 char *String)
322 {
323 UINT64 ConvertedInteger;
324
325
326 /*
327 * TBD: The ImplicitStrtoul64 function does not report overflow
328 * conditions. The input string is simply truncated. If it is
329 * desired to report overflow to the table compiler, this should
330 * somehow be added here. Note: integers that are prefixed with 0x
331 * or not are both hex integers.
332 */
333 ConvertedInteger = AcpiUtImplicitStrtoul64 (String);
334 return (ConvertedInteger);
335 }
336
337 /******************************************************************************
338 *
339 * FUNCTION: DtGetFieldValue
340 *
341 * PARAMETERS: Field - Current field list pointer
342 *
343 * RETURN: Field value
344 *
345 * DESCRIPTION: Get field value
346 *
347 *****************************************************************************/
348
349 char *
DtGetFieldValue(DT_FIELD * Field)350 DtGetFieldValue (
351 DT_FIELD *Field)
352 {
353 if (!Field)
354 {
355 return (NULL);
356 }
357
358 return (Field->Value);
359 }
360
361
362 /******************************************************************************
363 *
364 * FUNCTION: DtGetFieldType
365 *
366 * PARAMETERS: Info - Data table info
367 *
368 * RETURN: Field type
369 *
370 * DESCRIPTION: Get field type
371 *
372 *****************************************************************************/
373
374 UINT8
DtGetFieldType(ACPI_DMTABLE_INFO * Info)375 DtGetFieldType (
376 ACPI_DMTABLE_INFO *Info)
377 {
378 UINT8 Type;
379
380
381 /* DT_FLAG means that this is the start of a block of flag bits */
382 /* TBD - we can make these a separate opcode later */
383
384 if (Info->Flags & DT_FLAG)
385 {
386 return (DT_FIELD_TYPE_FLAGS_INTEGER);
387 }
388
389 /* Type is based upon the opcode for this field in the info table */
390
391 switch (Info->Opcode)
392 {
393 case ACPI_DMT_FLAG0:
394 case ACPI_DMT_FLAG1:
395 case ACPI_DMT_FLAG2:
396 case ACPI_DMT_FLAG3:
397 case ACPI_DMT_FLAG4:
398 case ACPI_DMT_FLAG5:
399 case ACPI_DMT_FLAG6:
400 case ACPI_DMT_FLAG7:
401 case ACPI_DMT_FLAGS0:
402 case ACPI_DMT_FLAGS1:
403 case ACPI_DMT_FLAGS2:
404 case ACPI_DMT_FLAGS4:
405 case ACPI_DMT_FLAGS4_0:
406 case ACPI_DMT_FLAGS4_4:
407 case ACPI_DMT_FLAGS4_8:
408 case ACPI_DMT_FLAGS4_12:
409 case ACPI_DMT_FLAGS16_16:
410
411 Type = DT_FIELD_TYPE_FLAG;
412 break;
413
414 case ACPI_DMT_NAME4:
415 case ACPI_DMT_SIG:
416 case ACPI_DMT_NAME6:
417 case ACPI_DMT_NAME8:
418 case ACPI_DMT_STRING:
419
420 Type = DT_FIELD_TYPE_STRING;
421 break;
422
423 case ACPI_DMT_BUFFER:
424 case ACPI_DMT_RAW_BUFFER:
425 case ACPI_DMT_BUF7:
426 case ACPI_DMT_BUF10:
427 case ACPI_DMT_BUF12:
428 case ACPI_DMT_BUF16:
429 case ACPI_DMT_BUF128:
430 case ACPI_DMT_PCI_PATH:
431
432 Type = DT_FIELD_TYPE_BUFFER;
433 break;
434
435 case ACPI_DMT_GAS:
436 case ACPI_DMT_HESTNTFY:
437 case ACPI_DMT_IORTMEM:
438
439 Type = DT_FIELD_TYPE_INLINE_SUBTABLE;
440 break;
441
442 case ACPI_DMT_UNICODE:
443
444 Type = DT_FIELD_TYPE_UNICODE;
445 break;
446
447 case ACPI_DMT_UUID:
448
449 Type = DT_FIELD_TYPE_UUID;
450 break;
451
452 case ACPI_DMT_DEVICE_PATH:
453
454 Type = DT_FIELD_TYPE_DEVICE_PATH;
455 break;
456
457 case ACPI_DMT_LABEL:
458
459 Type = DT_FIELD_TYPE_LABEL;
460 break;
461
462 default:
463
464 Type = DT_FIELD_TYPE_INTEGER;
465 break;
466 }
467
468 return (Type);
469 }
470
471
472 /******************************************************************************
473 *
474 * FUNCTION: DtGetBufferLength
475 *
476 * PARAMETERS: Buffer - List of integers,
477 * for example "10 3A 4F 2E"
478 *
479 * RETURN: Count of integer
480 *
481 * DESCRIPTION: Get length of bytes needed to store the integers
482 *
483 *****************************************************************************/
484
485 UINT32
DtGetBufferLength(char * Buffer)486 DtGetBufferLength (
487 char *Buffer)
488 {
489 UINT32 ByteLength = 0;
490
491
492 while (*Buffer)
493 {
494 if (*Buffer == ' ')
495 {
496 ByteLength++;
497
498 while (*Buffer == ' ')
499 {
500 Buffer++;
501 }
502 }
503
504 Buffer++;
505 }
506
507 return (++ByteLength);
508 }
509
510
511 /******************************************************************************
512 *
513 * FUNCTION: DtGetFieldLength
514 *
515 * PARAMETERS: Field - Current field
516 * Info - Data table info
517 *
518 * RETURN: Field length
519 *
520 * DESCRIPTION: Get length of bytes needed to compile the field
521 *
522 * Note: This function must remain in sync with AcpiDmDumpTable.
523 *
524 *****************************************************************************/
525
526 UINT32
DtGetFieldLength(DT_FIELD * Field,ACPI_DMTABLE_INFO * Info)527 DtGetFieldLength (
528 DT_FIELD *Field,
529 ACPI_DMTABLE_INFO *Info)
530 {
531 UINT32 ByteLength = 0;
532 char *Value;
533
534
535 /* Length is based upon the opcode for this field in the info table */
536
537 switch (Info->Opcode)
538 {
539 case ACPI_DMT_FLAG0:
540 case ACPI_DMT_FLAG1:
541 case ACPI_DMT_FLAG2:
542 case ACPI_DMT_FLAG3:
543 case ACPI_DMT_FLAG4:
544 case ACPI_DMT_FLAG5:
545 case ACPI_DMT_FLAG6:
546 case ACPI_DMT_FLAG7:
547 case ACPI_DMT_FLAGS0:
548 case ACPI_DMT_FLAGS1:
549 case ACPI_DMT_FLAGS2:
550 case ACPI_DMT_FLAGS4:
551 case ACPI_DMT_FLAGS4_0:
552 case ACPI_DMT_FLAGS4_4:
553 case ACPI_DMT_FLAGS4_8:
554 case ACPI_DMT_FLAGS4_12:
555 case ACPI_DMT_FLAGS16_16:
556 case ACPI_DMT_LABEL:
557 case ACPI_DMT_EXTRA_TEXT:
558
559 ByteLength = 0;
560 break;
561
562 case ACPI_DMT_UINT8:
563 case ACPI_DMT_CHKSUM:
564 case ACPI_DMT_SPACEID:
565 case ACPI_DMT_ACCWIDTH:
566 case ACPI_DMT_IVRS:
567 case ACPI_DMT_GTDT:
568 case ACPI_DMT_MADT:
569 case ACPI_DMT_PCCT:
570 case ACPI_DMT_PMTT:
571 case ACPI_DMT_PPTT:
572 case ACPI_DMT_SDEV:
573 case ACPI_DMT_SRAT:
574 case ACPI_DMT_ASF:
575 case ACPI_DMT_HESTNTYP:
576 case ACPI_DMT_FADTPM:
577 case ACPI_DMT_EINJACT:
578 case ACPI_DMT_EINJINST:
579 case ACPI_DMT_ERSTACT:
580 case ACPI_DMT_ERSTINST:
581 case ACPI_DMT_DMAR_SCOPE:
582
583 ByteLength = 1;
584 break;
585
586 case ACPI_DMT_UINT16:
587 case ACPI_DMT_DMAR:
588 case ACPI_DMT_HEST:
589 case ACPI_DMT_HMAT:
590 case ACPI_DMT_NFIT:
591 case ACPI_DMT_PCI_PATH:
592
593 ByteLength = 2;
594 break;
595
596 case ACPI_DMT_UINT24:
597
598 ByteLength = 3;
599 break;
600
601 case ACPI_DMT_UINT32:
602 case ACPI_DMT_NAME4:
603 case ACPI_DMT_SIG:
604 case ACPI_DMT_LPIT:
605 case ACPI_DMT_TPM2:
606
607 ByteLength = 4;
608 break;
609
610 case ACPI_DMT_UINT40:
611
612 ByteLength = 5;
613 break;
614
615 case ACPI_DMT_UINT48:
616 case ACPI_DMT_NAME6:
617
618 ByteLength = 6;
619 break;
620
621 case ACPI_DMT_UINT56:
622 case ACPI_DMT_BUF7:
623
624 ByteLength = 7;
625 break;
626
627 case ACPI_DMT_UINT64:
628 case ACPI_DMT_NAME8:
629
630 ByteLength = 8;
631 break;
632
633 case ACPI_DMT_STRING:
634
635 Value = DtGetFieldValue (Field);
636 if (Value)
637 {
638 ByteLength = strlen (Value) + 1;
639 }
640 else
641 { /* At this point, this is a fatal error */
642
643 sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
644 DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
645 return (0);
646 }
647 break;
648
649 case ACPI_DMT_GAS:
650
651 ByteLength = sizeof (ACPI_GENERIC_ADDRESS);
652 break;
653
654 case ACPI_DMT_HESTNTFY:
655
656 ByteLength = sizeof (ACPI_HEST_NOTIFY);
657 break;
658
659 case ACPI_DMT_IORTMEM:
660
661 ByteLength = sizeof (ACPI_IORT_MEMORY_ACCESS);
662 break;
663
664 case ACPI_DMT_BUFFER:
665 case ACPI_DMT_RAW_BUFFER:
666
667 Value = DtGetFieldValue (Field);
668 if (Value)
669 {
670 ByteLength = DtGetBufferLength (Value);
671 }
672 else
673 { /* At this point, this is a fatal error */
674
675 sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
676 DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
677 return (0);
678 }
679 break;
680
681 case ACPI_DMT_BUF10:
682
683 ByteLength = 10;
684 break;
685
686 case ACPI_DMT_BUF12:
687
688 ByteLength = 12;
689 break;
690
691 case ACPI_DMT_BUF16:
692 case ACPI_DMT_UUID:
693
694 ByteLength = 16;
695 break;
696
697 case ACPI_DMT_BUF128:
698
699 ByteLength = 128;
700 break;
701
702 case ACPI_DMT_UNICODE:
703
704 Value = DtGetFieldValue (Field);
705
706 /* TBD: error if Value is NULL? (as below?) */
707
708 ByteLength = (strlen (Value) + 1) * sizeof(UINT16);
709 break;
710
711 default:
712
713 DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid table opcode");
714 return (0);
715 }
716
717 return (ByteLength);
718 }
719
720
721 /******************************************************************************
722 *
723 * FUNCTION: DtSum
724 *
725 * PARAMETERS: DT_WALK_CALLBACK:
726 * Subtable - Subtable
727 * Context - Unused
728 * ReturnValue - Store the checksum of subtable
729 *
730 * RETURN: Status
731 *
732 * DESCRIPTION: Get the checksum of subtable
733 *
734 *****************************************************************************/
735
736 static void
DtSum(DT_SUBTABLE * Subtable,void * Context,void * ReturnValue)737 DtSum (
738 DT_SUBTABLE *Subtable,
739 void *Context,
740 void *ReturnValue)
741 {
742 UINT8 Checksum;
743 UINT8 *Sum = ReturnValue;
744
745
746 Checksum = AcpiTbChecksum (Subtable->Buffer, Subtable->Length);
747 *Sum = (UINT8) (*Sum + Checksum);
748 }
749
750
751 /******************************************************************************
752 *
753 * FUNCTION: DtSetTableChecksum
754 *
755 * PARAMETERS: ChecksumPointer - Where to return the checksum
756 *
757 * RETURN: None
758 *
759 * DESCRIPTION: Set checksum of the whole data table into the checksum field
760 *
761 *****************************************************************************/
762
763 void
DtSetTableChecksum(UINT8 * ChecksumPointer)764 DtSetTableChecksum (
765 UINT8 *ChecksumPointer)
766 {
767 UINT8 Checksum = 0;
768 UINT8 OldSum;
769
770
771 DtWalkTableTree (Gbl_RootTable, DtSum, NULL, &Checksum);
772
773 OldSum = *ChecksumPointer;
774 Checksum = (UINT8) (Checksum - OldSum);
775
776 /* Compute the final checksum */
777
778 Checksum = (UINT8) (0 - Checksum);
779 *ChecksumPointer = Checksum;
780 }
781
782
783 /******************************************************************************
784 *
785 * FUNCTION: DtSetTableLength
786 *
787 * PARAMETERS: None
788 *
789 * RETURN: None
790 *
791 * DESCRIPTION: Walk the subtables and set all the length fields
792 *
793 *****************************************************************************/
794
795 void
DtSetTableLength(void)796 DtSetTableLength (
797 void)
798 {
799 DT_SUBTABLE *ParentTable;
800 DT_SUBTABLE *ChildTable;
801
802
803 ParentTable = Gbl_RootTable;
804 ChildTable = NULL;
805
806 if (!ParentTable)
807 {
808 return;
809 }
810
811 DtSetSubtableLength (ParentTable);
812
813 while (1)
814 {
815 ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
816 if (ChildTable)
817 {
818 if (ChildTable->LengthField)
819 {
820 DtSetSubtableLength (ChildTable);
821 }
822
823 if (ChildTable->Child)
824 {
825 ParentTable = ChildTable;
826 ChildTable = NULL;
827 }
828 else
829 {
830 ParentTable->TotalLength += ChildTable->TotalLength;
831 if (ParentTable->LengthField)
832 {
833 DtSetSubtableLength (ParentTable);
834 }
835 }
836 }
837 else
838 {
839 ChildTable = ParentTable;
840
841 if (ChildTable == Gbl_RootTable)
842 {
843 break;
844 }
845
846 ParentTable = DtGetParentSubtable (ParentTable);
847
848 ParentTable->TotalLength += ChildTable->TotalLength;
849 if (ParentTable->LengthField)
850 {
851 DtSetSubtableLength (ParentTable);
852 }
853 }
854 }
855 }
856
857
858 /******************************************************************************
859 *
860 * FUNCTION: DtWalkTableTree
861 *
862 * PARAMETERS: StartTable - Subtable in the tree where walking begins
863 * UserFunction - Called during the walk
864 * Context - Passed to user function
865 * ReturnValue - The return value of UserFunction
866 *
867 * RETURN: None
868 *
869 * DESCRIPTION: Performs a depth-first walk of the subtable tree
870 *
871 *****************************************************************************/
872
873 void
DtWalkTableTree(DT_SUBTABLE * StartTable,DT_WALK_CALLBACK UserFunction,void * Context,void * ReturnValue)874 DtWalkTableTree (
875 DT_SUBTABLE *StartTable,
876 DT_WALK_CALLBACK UserFunction,
877 void *Context,
878 void *ReturnValue)
879 {
880 DT_SUBTABLE *ParentTable;
881 DT_SUBTABLE *ChildTable;
882
883
884 ParentTable = StartTable;
885 ChildTable = NULL;
886
887 if (!ParentTable)
888 {
889 return;
890 }
891
892 UserFunction (ParentTable, Context, ReturnValue);
893
894 while (1)
895 {
896 ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
897 if (ChildTable)
898 {
899 UserFunction (ChildTable, Context, ReturnValue);
900
901 if (ChildTable->Child)
902 {
903 ParentTable = ChildTable;
904 ChildTable = NULL;
905 }
906 }
907 else
908 {
909 ChildTable = ParentTable;
910 if (ChildTable == Gbl_RootTable)
911 {
912 break;
913 }
914
915 ParentTable = DtGetParentSubtable (ParentTable);
916
917 if (ChildTable->Peer == StartTable)
918 {
919 break;
920 }
921 }
922 }
923 }
924