xref: /netbsd-src/sys/external/bsd/acpica/dist/common/dmtbdump3.c (revision c7960b37466ae0fd417c32e6acbb4b956ac7a121)
1 /******************************************************************************
2  *
3  * Module Name: dmtbdump3 - Dump ACPI data tables that contain no AML code
4  *
5  *****************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2023, 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 MERCHANTABILITY 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 "acpi.h"
45 #include "accommon.h"
46 #include "acdisasm.h"
47 #include "actables.h"
48 
49 /* This module used for application-level code only */
50 
51 #define _COMPONENT          ACPI_CA_DISASSEMBLER
52         ACPI_MODULE_NAME    ("dmtbdump3")
53 
54 
55 /*******************************************************************************
56  *
57  * FUNCTION:    AcpiDmDumpSlic
58  *
59  * PARAMETERS:  Table               - A SLIC table
60  *
61  * RETURN:      None
62  *
63  * DESCRIPTION: Format the contents of a SLIC
64  *
65  ******************************************************************************/
66 
67 void
68 AcpiDmDumpSlic (
69     ACPI_TABLE_HEADER       *Table)
70 {
71 
72     (void) AcpiDmDumpTable (Table->Length, sizeof (ACPI_TABLE_HEADER),
73         (void *) (Table + sizeof (*Table)),
74         Table->Length - sizeof (*Table), AcpiDmTableInfoSlic);
75 }
76 
77 
78 /*******************************************************************************
79  *
80  * FUNCTION:    AcpiDmDumpSlit
81  *
82  * PARAMETERS:  Table               - An SLIT
83  *
84  * RETURN:      None
85  *
86  * DESCRIPTION: Format the contents of a SLIT
87  *
88  ******************************************************************************/
89 
90 void
91 AcpiDmDumpSlit (
92     ACPI_TABLE_HEADER       *Table)
93 {
94     ACPI_STATUS             Status;
95     UINT32                  Offset;
96     UINT8                   *Row;
97     UINT32                  Localities;
98     UINT32                  i;
99     UINT32                  j;
100 
101 
102     /* Main table */
103 
104     Status = AcpiDmDumpTable (Table->Length, 0, Table, 0, AcpiDmTableInfoSlit);
105     if (ACPI_FAILURE (Status))
106     {
107         return;
108     }
109 
110     /* Display the Locality NxN Matrix */
111 
112     Localities = (UINT32) ACPI_CAST_PTR (ACPI_TABLE_SLIT, Table)->LocalityCount;
113     Offset = ACPI_OFFSET (ACPI_TABLE_SLIT, Entry[0]);
114     Row = (UINT8 *) ACPI_CAST_PTR (ACPI_TABLE_SLIT, Table)->Entry;
115 
116     for (i = 0; i < Localities; i++)
117     {
118         /* Display one row of the matrix */
119 
120         AcpiDmLineHeader2 (Offset, Localities, "Locality", i);
121         for  (j = 0; j < Localities; j++)
122         {
123             /* Check for beyond EOT */
124 
125             if (Offset >= Table->Length)
126             {
127                 AcpiOsPrintf (
128                     "\n**** Not enough room in table for all localities\n");
129                 return;
130             }
131 
132             AcpiOsPrintf ("%2.2X", Row[j]);
133             Offset++;
134 
135             /* Display up to 16 bytes per output row */
136 
137             if ((j+1) < Localities)
138             {
139                 AcpiOsPrintf (" ");
140 
141                 if (j && (((j+1) % 16) == 0))
142                 {
143                     AcpiOsPrintf ("\\\n"); /* With line continuation char */
144                     AcpiDmLineHeader (Offset, 0, NULL);
145                 }
146             }
147         }
148 
149         /* Point to next row */
150 
151         AcpiOsPrintf ("\n");
152         Row += Localities;
153     }
154 }
155 
156 
157 /*******************************************************************************
158  *
159  * FUNCTION:    AcpiDmDumpSrat
160  *
161  * PARAMETERS:  Table               - A SRAT table
162  *
163  * RETURN:      None
164  *
165  * DESCRIPTION: Format the contents of a SRAT
166  *
167  ******************************************************************************/
168 
169 void
170 AcpiDmDumpSrat (
171     ACPI_TABLE_HEADER       *Table)
172 {
173     ACPI_STATUS             Status;
174     UINT32                  Offset = sizeof (ACPI_TABLE_SRAT);
175     ACPI_SUBTABLE_HEADER    *Subtable;
176     ACPI_DMTABLE_INFO       *InfoTable;
177 
178 
179     /* Main table */
180 
181     Status = AcpiDmDumpTable (Table->Length, 0, Table, 0, AcpiDmTableInfoSrat);
182     if (ACPI_FAILURE (Status))
183     {
184         return;
185     }
186 
187     /* Subtables */
188 
189     Subtable = ACPI_ADD_PTR (ACPI_SUBTABLE_HEADER, Table, Offset);
190     while (Offset < Table->Length)
191     {
192         /* Common subtable header */
193 
194         AcpiOsPrintf ("\n");
195         Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
196             Subtable->Length, AcpiDmTableInfoSratHdr);
197         if (ACPI_FAILURE (Status))
198         {
199             return;
200         }
201 
202         switch (Subtable->Type)
203         {
204         case ACPI_SRAT_TYPE_CPU_AFFINITY:
205 
206             InfoTable = AcpiDmTableInfoSrat0;
207             break;
208 
209         case ACPI_SRAT_TYPE_MEMORY_AFFINITY:
210 
211             InfoTable = AcpiDmTableInfoSrat1;
212             break;
213 
214         case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY:
215 
216             InfoTable = AcpiDmTableInfoSrat2;
217             break;
218 
219         case ACPI_SRAT_TYPE_GICC_AFFINITY:
220 
221             InfoTable = AcpiDmTableInfoSrat3;
222             break;
223 
224         case ACPI_SRAT_TYPE_GIC_ITS_AFFINITY:
225 
226             InfoTable = AcpiDmTableInfoSrat4;
227             break;
228 
229         case ACPI_SRAT_TYPE_GENERIC_AFFINITY:
230 
231             InfoTable = AcpiDmTableInfoSrat5;
232             break;
233 
234         case ACPI_SRAT_TYPE_GENERIC_PORT_AFFINITY:
235 
236             InfoTable = AcpiDmTableInfoSrat6;
237             break;
238 
239         case ACPI_SRAT_TYPE_RINTC_AFFINITY:
240 
241             InfoTable = AcpiDmTableInfoSrat7;
242             break;
243 
244         default:
245             AcpiOsPrintf ("\n**** Unknown SRAT subtable type 0x%X\n",
246                 Subtable->Type);
247 
248             /* Attempt to continue */
249 
250             if (!Subtable->Length)
251             {
252                 AcpiOsPrintf ("Invalid zero length subtable\n");
253                 return;
254             }
255             goto NextSubtable;
256         }
257 
258         AcpiOsPrintf ("\n");
259         Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
260             Subtable->Length, InfoTable);
261         if (ACPI_FAILURE (Status))
262         {
263             return;
264         }
265 
266 NextSubtable:
267         /* Point to next subtable */
268 
269         Offset += Subtable->Length;
270         Subtable = ACPI_ADD_PTR (ACPI_SUBTABLE_HEADER, Subtable,
271             Subtable->Length);
272     }
273 }
274 
275 
276 /*******************************************************************************
277  *
278  * FUNCTION:    AcpiDmDumpStao
279  *
280  * PARAMETERS:  Table               - A STAO table
281  *
282  * RETURN:      None
283  *
284  * DESCRIPTION: Format the contents of a STAO. This is a variable-length
285  *              table that contains an open-ended number of ASCII strings
286  *              at the end of the table.
287  *
288  ******************************************************************************/
289 
290 void
291 AcpiDmDumpStao (
292     ACPI_TABLE_HEADER       *Table)
293 {
294     ACPI_STATUS             Status;
295     char                    *Namepath;
296     UINT32                  Length = Table->Length;
297     UINT32                  StringLength;
298     UINT32                  Offset = sizeof (ACPI_TABLE_STAO);
299 
300 
301     /* Main table */
302 
303     Status = AcpiDmDumpTable (Length, 0, Table, 0, AcpiDmTableInfoStao);
304     if (ACPI_FAILURE (Status))
305     {
306         return;
307     }
308 
309     /* The rest of the table consists of Namepath strings */
310 
311     while (Offset < Table->Length)
312     {
313         Namepath = ACPI_ADD_PTR (char, Table, Offset);
314         StringLength = strlen (Namepath) + 1;
315 
316         AcpiDmLineHeader (Offset, StringLength, "Namepath");
317         AcpiOsPrintf ("\"%s\"\n", Namepath);
318 
319         /* Point to next namepath */
320 
321         Offset += StringLength;
322     }
323 }
324 
325 
326 /*******************************************************************************
327  *
328  * FUNCTION:    AcpiDmDumpSvkl
329  *
330  * PARAMETERS:  Table               - A SVKL table
331  *
332  * RETURN:      None
333  *
334  * DESCRIPTION: Format the contents of a SVKL. This is a variable-length
335  *              table that contains an open-ended number of key subtables at
336  *              the end of the header.
337  *
338  * NOTES: SVKL is essentially a flat table, with a small main table and
339  *          a variable number of a single type of subtable.
340  *
341  ******************************************************************************/
342 
343 void
344 AcpiDmDumpSvkl (
345     ACPI_TABLE_HEADER       *Table)
346 {
347     ACPI_STATUS             Status;
348     UINT32                  Length = Table->Length;
349     UINT32                  Offset = sizeof (ACPI_TABLE_SVKL);
350     ACPI_SVKL_KEY           *Subtable;
351 
352 
353     /* Main table */
354 
355     Status = AcpiDmDumpTable (Length, 0, Table, 0, AcpiDmTableInfoSvkl);
356     if (ACPI_FAILURE (Status))
357     {
358         return;
359     }
360 
361     /* The rest of the table consists of subtables (single type) */
362 
363     Subtable = ACPI_ADD_PTR (ACPI_SVKL_KEY, Table, Offset);
364     while (Offset < Table->Length)
365     {
366         /* Dump the subtable */
367 
368         AcpiOsPrintf ("\n");
369         Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
370             sizeof (ACPI_SVKL_KEY), AcpiDmTableInfoSvkl0);
371         if (ACPI_FAILURE (Status))
372         {
373             return;
374         }
375 
376         /* Point to next subtable */
377 
378         Offset += sizeof (ACPI_SVKL_KEY);
379         Subtable = ACPI_ADD_PTR (ACPI_SVKL_KEY, Subtable,
380             sizeof (ACPI_SVKL_KEY));
381     }
382 }
383 
384 
385 /*******************************************************************************
386  *
387  * FUNCTION:    AcpiDmDumpTcpa
388  *
389  * PARAMETERS:  Table               - A TCPA table
390  *
391  * RETURN:      None
392  *
393  * DESCRIPTION: Format the contents of a TCPA.
394  *
395  * NOTE:        There are two versions of the table with the same signature:
396  *              the client version and the server version. The common
397  *              PlatformClass field is used to differentiate the two types of
398  *              tables.
399  *
400  ******************************************************************************/
401 
402 void
403 AcpiDmDumpTcpa (
404     ACPI_TABLE_HEADER       *Table)
405 {
406     UINT32                  Offset = sizeof (ACPI_TABLE_TCPA_HDR);
407     ACPI_TABLE_TCPA_HDR     *CommonHeader = ACPI_CAST_PTR (
408                                 ACPI_TABLE_TCPA_HDR, Table);
409     ACPI_TABLE_TCPA_HDR     *Subtable = ACPI_ADD_PTR (
410                                 ACPI_TABLE_TCPA_HDR, Table, Offset);
411     ACPI_STATUS             Status;
412 
413 
414     /* Main table */
415 
416     Status = AcpiDmDumpTable (Table->Length, 0, Table,
417         0, AcpiDmTableInfoTcpaHdr);
418     if (ACPI_FAILURE (Status))
419     {
420         return;
421     }
422 
423     /*
424      * Examine the PlatformClass field to determine the table type.
425      * Either a client or server table. Only one.
426      */
427     switch (CommonHeader->PlatformClass)
428     {
429     case ACPI_TCPA_CLIENT_TABLE:
430 
431         Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
432             Table->Length - Offset, AcpiDmTableInfoTcpaClient);
433         break;
434 
435     case ACPI_TCPA_SERVER_TABLE:
436 
437         Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
438             Table->Length - Offset, AcpiDmTableInfoTcpaServer);
439         break;
440 
441     default:
442 
443         AcpiOsPrintf ("\n**** Unknown TCPA Platform Class 0x%X\n",
444             CommonHeader->PlatformClass);
445         Status = AE_ERROR;
446         break;
447     }
448 
449     if (ACPI_FAILURE (Status))
450     {
451         AcpiOsPrintf ("\n**** Cannot disassemble TCPA table\n");
452     }
453 }
454 
455 
456 /*******************************************************************************
457  *
458  * FUNCTION:    AcpiDmDumpTpm2
459  *
460  * PARAMETERS:  Table               - A TPM2 table
461  *
462  * RETURN:      None
463  *
464  * DESCRIPTION: Format the contents of a TPM2.
465  *
466  ******************************************************************************/
467 
468 static void
469 AcpiDmDumpTpm2Rev3 (
470     ACPI_TABLE_HEADER       *Table)
471 {
472     UINT32                  Offset = sizeof (ACPI_TABLE_TPM23);
473     ACPI_TABLE_TPM23        *CommonHeader = ACPI_CAST_PTR (ACPI_TABLE_TPM23, Table);
474     ACPI_TPM23_TRAILER      *Subtable = ACPI_ADD_PTR (ACPI_TPM23_TRAILER, Table, Offset);
475     ACPI_STATUS             Status;
476 
477 
478     /* Main table */
479 
480     Status = AcpiDmDumpTable (Table->Length, 0, Table, 0, AcpiDmTableInfoTpm23);
481     if (ACPI_FAILURE (Status))
482     {
483         return;
484     }
485 
486     /* Optional subtable if start method is ACPI start method */
487 
488     switch (CommonHeader->StartMethod)
489     {
490     case ACPI_TPM23_ACPI_START_METHOD:
491 
492         (void) AcpiDmDumpTable (Table->Length, Offset, Subtable,
493             Table->Length - Offset, AcpiDmTableInfoTpm23a);
494         break;
495 
496     default:
497         break;
498     }
499 }
500 
501 
502 /*******************************************************************************
503  *
504  * FUNCTION:    AcpiDmDumpTpm2
505  *
506  * PARAMETERS:  Table               - A TPM2 table
507  *
508  * RETURN:      None
509  *
510  * DESCRIPTION: Format the contents of a TPM2.
511  *
512  ******************************************************************************/
513 
514 void
515 AcpiDmDumpTpm2 (
516     ACPI_TABLE_HEADER       *Table)
517 {
518     UINT32                  Offset = sizeof (ACPI_TABLE_TPM2);
519     ACPI_TABLE_TPM2         *CommonHeader = ACPI_CAST_PTR (ACPI_TABLE_TPM2, Table);
520     ACPI_TPM2_TRAILER       *Subtable = ACPI_ADD_PTR (ACPI_TPM2_TRAILER, Table, Offset);
521     ACPI_TPM2_ARM_SMC       *ArmSubtable;
522     ACPI_STATUS             Status;
523 
524 
525     if (Table->Revision == 3)
526     {
527         AcpiDmDumpTpm2Rev3(Table);
528         return;
529     }
530 
531     /* Main table */
532 
533     Status = AcpiDmDumpTable (Table->Length, 0, Table, 0, AcpiDmTableInfoTpm2);
534 
535     if (ACPI_FAILURE (Status))
536     {
537         return;
538     }
539 
540     AcpiOsPrintf ("\n");
541     Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
542         Table->Length - Offset, AcpiDmTableInfoTpm2a);
543     if (ACPI_FAILURE (Status))
544     {
545         return;
546     }
547 
548     switch (CommonHeader->StartMethod)
549     {
550     case ACPI_TPM2_COMMAND_BUFFER_WITH_ARM_SMC:
551 
552         ArmSubtable = ACPI_ADD_PTR (ACPI_TPM2_ARM_SMC, Subtable,
553             sizeof (ACPI_TPM2_TRAILER));
554         Offset += sizeof (ACPI_TPM2_TRAILER);
555 
556         AcpiOsPrintf ("\n");
557         (void) AcpiDmDumpTable (Table->Length, Offset, ArmSubtable,
558             Table->Length - Offset, AcpiDmTableInfoTpm211);
559         break;
560 
561     default:
562         break;
563     }
564 }
565 
566 
567 /*******************************************************************************
568  *
569  * FUNCTION:    AcpiDmDumpViot
570  *
571  * PARAMETERS:  Table               - A VIOT table
572  *
573  * RETURN:      None
574  *
575  * DESCRIPTION: Format the contents of a VIOT
576  *
577  ******************************************************************************/
578 
579 void
580 AcpiDmDumpViot (
581     ACPI_TABLE_HEADER       *Table)
582 {
583     ACPI_STATUS             Status;
584     ACPI_TABLE_VIOT         *Viot;
585     ACPI_VIOT_HEADER        *ViotHeader;
586     UINT16                  Length;
587     UINT32                  Offset;
588     ACPI_DMTABLE_INFO       *InfoTable;
589 
590     /* Main table */
591 
592     Status = AcpiDmDumpTable (Table->Length, 0, Table, 0, AcpiDmTableInfoViot);
593     if (ACPI_FAILURE (Status))
594     {
595         return;
596     }
597 
598     Viot = ACPI_CAST_PTR (ACPI_TABLE_VIOT, Table);
599 
600     Offset = Viot->NodeOffset;
601     while (Offset < Table->Length)
602     {
603         /* Common subtable header */
604         ViotHeader = ACPI_ADD_PTR (ACPI_VIOT_HEADER, Table, Offset);
605         AcpiOsPrintf ("\n");
606 
607         Length = sizeof (ACPI_VIOT_HEADER);
608         Status = AcpiDmDumpTable (Table->Length, Offset, ViotHeader, Length,
609             AcpiDmTableInfoViotHeader);
610         if (ACPI_FAILURE (Status))
611         {
612             return;
613         }
614 
615         Length = ViotHeader->Length;
616         switch (ViotHeader->Type)
617         {
618         case ACPI_VIOT_NODE_PCI_RANGE:
619 
620             InfoTable = AcpiDmTableInfoViot1;
621             break;
622 
623         case ACPI_VIOT_NODE_MMIO:
624 
625             InfoTable = AcpiDmTableInfoViot2;
626             break;
627 
628         case ACPI_VIOT_NODE_VIRTIO_IOMMU_PCI:
629 
630             InfoTable = AcpiDmTableInfoViot3;
631             break;
632 
633         case ACPI_VIOT_NODE_VIRTIO_IOMMU_MMIO:
634 
635             InfoTable = AcpiDmTableInfoViot4;
636             break;
637 
638         default:
639 
640             AcpiOsPrintf ("\n*** Unknown VIOT node type 0x%X\n",
641                 ViotHeader->Type);
642 
643             /* Attempt to continue */
644 
645             if (!Length)
646             {
647                 AcpiOsPrintf ("Invalid zero length VIOT node\n");
648                 return;
649             }
650             goto NextSubtable;
651         }
652 
653         AcpiOsPrintf ("\n");
654         Status = AcpiDmDumpTable (Table->Length, Offset, ViotHeader, Length,
655             InfoTable);
656         if (ACPI_FAILURE (Status))
657         {
658             return;
659         }
660 
661 NextSubtable:
662         Offset += Length;
663     }
664 }
665 
666 
667 /*******************************************************************************
668  *
669  * FUNCTION:    AcpiDmDumpWdat
670  *
671  * PARAMETERS:  Table               - A WDAT table
672  *
673  * RETURN:      None
674  *
675  * DESCRIPTION: Format the contents of a WDAT
676  *
677  ******************************************************************************/
678 
679 void
680 AcpiDmDumpWdat (
681     ACPI_TABLE_HEADER       *Table)
682 {
683     ACPI_STATUS             Status;
684     UINT32                  Offset = sizeof (ACPI_TABLE_WDAT);
685     ACPI_WDAT_ENTRY         *Subtable;
686 
687 
688     /* Main table */
689 
690     Status = AcpiDmDumpTable (Table->Length, 0, Table, 0, AcpiDmTableInfoWdat);
691     if (ACPI_FAILURE (Status))
692     {
693         return;
694     }
695 
696     /* Subtables */
697 
698     Subtable = ACPI_ADD_PTR (ACPI_WDAT_ENTRY, Table, Offset);
699     while (Offset < Table->Length)
700     {
701         /* Common subtable header */
702 
703         AcpiOsPrintf ("\n");
704         Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
705             sizeof (ACPI_WDAT_ENTRY), AcpiDmTableInfoWdat0);
706         if (ACPI_FAILURE (Status))
707         {
708             return;
709         }
710 
711         /* Point to next subtable */
712 
713         Offset += sizeof (ACPI_WDAT_ENTRY);
714         Subtable = ACPI_ADD_PTR (ACPI_WDAT_ENTRY, Subtable,
715             sizeof (ACPI_WDAT_ENTRY));
716     }
717 }
718 
719 
720 /*******************************************************************************
721  *
722  * FUNCTION:    AcpiDmDumpWpbt
723  *
724  * PARAMETERS:  Table               - A WPBT table
725  *
726  * RETURN:      None
727  *
728  * DESCRIPTION: Format the contents of a WPBT. This table type consists
729  *              of an open-ended arguments buffer at the end of the table.
730  *
731  ******************************************************************************/
732 
733 void
734 AcpiDmDumpWpbt (
735     ACPI_TABLE_HEADER       *Table)
736 {
737     ACPI_STATUS             Status;
738     ACPI_TABLE_WPBT         *Subtable;
739     UINT16                  ArgumentsLength;
740 
741 
742     /* Dump the main table */
743 
744     Status = AcpiDmDumpTable (Table->Length, 0, Table, 0, AcpiDmTableInfoWpbt);
745     if (ACPI_FAILURE (Status))
746     {
747         return;
748     }
749 
750     /* Extract the arguments buffer length from the main table */
751 
752     Subtable = ACPI_CAST_PTR (ACPI_TABLE_WPBT, Table);
753     ArgumentsLength = Subtable->ArgumentsLength;
754 
755     /* Dump the arguments buffer if present */
756 
757     if (ArgumentsLength)
758     {
759         (void) AcpiDmDumpTable (Table->Length, 0, Table, ArgumentsLength,
760             AcpiDmTableInfoWpbt0);
761     }
762 }
763