1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1996, by Steve Passe
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. The name of the developer may NOT be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28/*
29 * mptable.c
30 */
31
32#ifndef lint
33static const char rcsid[] =
34  "$FreeBSD: stable/11/usr.sbin/mptable/mptable.c 330449 2018-03-05 07:26:05Z eadler $";
35#endif /* not lint */
36
37/*
38 * this will cause the raw mp table to be dumped to /tmp/mpdump
39 *
40#define RAW_DUMP
41 */
42
43#define MP_SIG			0x5f504d5f	/* _MP_ */
44#define EXTENDED_PROCESSING_READY
45#define OEM_PROCESSING_READY_NOT
46
47#include <sys/param.h>
48#include <sys/mman.h>
49#include <x86/mptable.h>
50#include <err.h>
51#include <fcntl.h>
52#include <paths.h>
53#include <stdint.h>
54#include <stdio.h>
55#include <stdlib.h>
56#include <string.h>
57#include <unistd.h>
58
59#define SEP_LINE \
60"\n-------------------------------------------------------------------------------\n"
61
62#define SEP_LINE2 \
63"\n===============================================================================\n"
64
65/* EBDA is @ 40:0e in real-mode terms */
66#define EBDA_POINTER		0x040e		/* location of EBDA pointer */
67
68/* CMOS 'top of mem' is @ 40:13 in real-mode terms */
69#define TOPOFMEM_POINTER	0x0413		/* BIOS: base memory size */
70
71#define DEFAULT_TOPOFMEM	0xa0000
72
73#define BIOS_BASE		0xf0000
74#define BIOS_BASE2		0xe0000
75#define BIOS_SIZE		0x10000
76#define ONE_KBYTE		1024
77
78#define GROPE_AREA1		0x80000
79#define GROPE_AREA2		0x90000
80#define GROPE_SIZE		0x10000
81
82#define MAXPNSTR		132
83
84typedef struct BUSTYPENAME {
85    u_char	type;
86    char	name[ 7 ];
87} busTypeName;
88
89static const busTypeName busTypeTable[] =
90{
91    { CBUS,		"CBUS"   },
92    { CBUSII,		"CBUSII" },
93    { EISA,		"EISA"   },
94    { UNKNOWN_BUSTYPE,	"---"    },
95    { UNKNOWN_BUSTYPE,	"---"    },
96    { ISA,		"ISA"    },
97    { UNKNOWN_BUSTYPE,	"---"    },
98    { UNKNOWN_BUSTYPE,	"---"    },
99    { UNKNOWN_BUSTYPE,	"---"    },
100    { UNKNOWN_BUSTYPE,	"---"    },
101    { UNKNOWN_BUSTYPE,	"---"    },
102    { UNKNOWN_BUSTYPE,	"---"    },
103    { PCI,		"PCI"    },
104    { UNKNOWN_BUSTYPE,	"---"    },
105    { UNKNOWN_BUSTYPE,	"---"    },
106    { UNKNOWN_BUSTYPE,	"---"    },
107    { UNKNOWN_BUSTYPE,	"---"    },
108    { UNKNOWN_BUSTYPE,	"---"    },
109    { UNKNOWN_BUSTYPE,	"---"    }
110};
111
112static const char *whereStrings[] = {
113    "Extended BIOS Data Area",
114    "BIOS top of memory",
115    "Default top of memory",
116    "BIOS",
117    "Extended BIOS",
118    "GROPE AREA #1",
119    "GROPE AREA #2"
120};
121
122static void apic_probe( u_int32_t* paddr, int* where );
123
124static void MPConfigDefault( int featureByte );
125
126static void MPFloatingPointer( u_int32_t paddr, int where, mpfps_t* mpfpsp );
127static void MPConfigTableHeader( u_int32_t pap );
128
129static void seekEntry( u_int32_t addr );
130static void readEntry( void* entry, int size );
131static void *mapEntry( u_int32_t addr, int size );
132
133static void processorEntry( proc_entry_ptr entry );
134static void busEntry( bus_entry_ptr entry );
135static void ioApicEntry( io_apic_entry_ptr entry );
136static void intEntry( int_entry_ptr entry );
137
138static void sasEntry( sas_entry_ptr entry );
139static void bhdEntry( bhd_entry_ptr entry );
140static void cbasmEntry( cbasm_entry_ptr entry );
141
142static void doDmesg( void );
143static void pnstr( char* s, int c );
144
145/* global data */
146static int	pfd;		/* physical /dev/mem fd */
147
148static int	busses[256];
149static int	apics[256];
150
151static int	ncpu;
152static int	nbus;
153static int	napic;
154static int	nintr;
155
156static int	dmesg;
157static int	grope;
158static int	verbose;
159
160static void
161usage( void )
162{
163    fprintf( stderr, "usage: mptable [-dmesg] [-verbose] [-grope] [-help]\n" );
164    exit( 0 );
165}
166
167/*
168 *
169 */
170int
171main( int argc, char *argv[] )
172{
173    u_int32_t	paddr;
174    int		where;
175    mpfps_t	mpfps;
176    int		defaultConfig;
177
178    int		ch;
179
180    /* announce ourselves */
181    puts( SEP_LINE2 );
182
183    printf( "MPTable\n" );
184
185    while ((ch = getopt(argc, argv, "d:g:h:v:")) != -1) {
186	switch(ch) {
187	case 'd':
188	    if ( strcmp( optarg, "mesg") == 0 )
189	        dmesg = 1;
190	    else
191	        dmesg = 0;
192	    break;
193	case 'h':
194	    if ( strcmp( optarg, "elp") == 0 )
195	        usage();
196	    break;
197	case 'g':
198	    if ( strcmp( optarg, "rope") == 0 )
199	        grope = 1;
200	    break;
201	case 'v':
202	    if ( strcmp( optarg, "erbose") == 0 )
203	        verbose = 1;
204	    break;
205	default:
206	    usage();
207	}
208	argc -= optind;
209	argv += optind;
210	optreset = 1;
211	optind = 0;
212    }
213
214    /* open physical memory for access to MP structures */
215    if ( (pfd = open( _PATH_MEM, O_RDONLY )) < 0 )
216        err( 1, "mem open" );
217
218    /* probe for MP structures */
219    apic_probe( &paddr, &where );
220    if ( where <= 0 ) {
221        fprintf( stderr, "\n MP FPS NOT found,\n" );
222        if (!grope)
223            fprintf( stderr, " suggest trying -grope option!!!\n\n" );
224        return 1;
225    }
226
227    if ( verbose )
228        printf( "\n MP FPS found in %s @ physical addr: 0x%08x\n",
229	      whereStrings[ where - 1 ], paddr );
230
231    puts( SEP_LINE );
232
233    /* analyze the MP Floating Pointer Structure */
234    MPFloatingPointer( paddr, where, &mpfps );
235
236    puts( SEP_LINE );
237
238    /* check whether an MP config table exists */
239    if ( (defaultConfig = mpfps->config_type) )
240        MPConfigDefault( defaultConfig );
241    else
242	MPConfigTableHeader( mpfps->pap );
243
244    /* do a dmesg output */
245    if ( dmesg )
246        doDmesg();
247
248    puts( SEP_LINE2 );
249
250    return 0;
251}
252
253
254/*
255 * set PHYSICAL address of MP floating pointer structure
256 */
257#define NEXT(X)		((X) += 4)
258static void
259apic_probe( u_int32_t* paddr, int* where )
260{
261    /*
262     * c rewrite of apic_probe() by Jack F. Vogel
263     */
264
265    int		x;
266    u_short	segment;
267    u_int32_t	target;
268    u_int	buffer[ BIOS_SIZE / sizeof( int ) ];
269
270    if ( verbose )
271        printf( "\n" );
272
273    /* search Extended Bios Data Area, if present */
274    if ( verbose )
275        printf( " looking for EBDA pointer @ 0x%04x, ", EBDA_POINTER );
276    seekEntry( (u_int32_t)EBDA_POINTER );
277    readEntry( &segment, 2 );
278    if ( segment ) {		    /* search EBDA */
279        target = (u_int32_t)segment << 4;
280	if ( verbose )
281	    printf( "found, searching EBDA @ 0x%08x\n", target );
282        seekEntry( target );
283        readEntry( buffer, ONE_KBYTE );
284
285        for ( x = 0; x < ONE_KBYTE / (int)sizeof ( unsigned int ); NEXT(x) ) {
286            if ( buffer[ x ] == MP_SIG ) {
287                *where = 1;
288                *paddr = (x * sizeof( unsigned int )) + target;
289                return;
290            }
291        }
292    }
293    else {
294	if ( verbose )
295	    printf( "NOT found\n" );
296    }
297
298    /* read CMOS for real top of mem */
299    seekEntry( (u_int32_t)TOPOFMEM_POINTER );
300    readEntry( &segment, 2 );
301    --segment;						/* less ONE_KBYTE */
302    target = segment * 1024;
303    if ( verbose )
304        printf( " searching CMOS 'top of mem' @ 0x%08x (%dK)\n",
305	        target, segment );
306    seekEntry( target );
307    readEntry( buffer, ONE_KBYTE );
308
309    for ( x = 0; x < ONE_KBYTE / (int)sizeof ( unsigned int ); NEXT(x) ) {
310        if ( buffer[ x ] == MP_SIG ) {
311            *where = 2;
312            *paddr = (x * sizeof( unsigned int )) + target;
313            return;
314        }
315    }
316
317    /* we don't necessarily believe CMOS, check base of the last 1K of 640K */
318    if ( target != (DEFAULT_TOPOFMEM - 1024)) {
319	target = (DEFAULT_TOPOFMEM - 1024);
320	if ( verbose )
321	    printf( " searching default 'top of mem' @ 0x%08x (%dK)\n",
322		    target, (target / 1024) );
323	seekEntry( target );
324	readEntry( buffer, ONE_KBYTE );
325
326	for ( x = 0; x < ONE_KBYTE / (int)sizeof ( unsigned int ); NEXT(x) ) {
327	    if ( buffer[ x ] == MP_SIG ) {
328		*where = 3;
329		*paddr = (x * sizeof( unsigned int )) + target;
330		return;
331	    }
332	}
333    }
334
335    /* search the BIOS */
336    if ( verbose )
337        printf( " searching BIOS @ 0x%08x\n", BIOS_BASE );
338    seekEntry( BIOS_BASE );
339    readEntry( buffer, BIOS_SIZE );
340
341    for ( x = 0; x < BIOS_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
342        if ( buffer[ x ] == MP_SIG ) {
343            *where = 4;
344            *paddr = (x * sizeof( unsigned int )) + BIOS_BASE;
345            return;
346        }
347    }
348
349    /* search the extended BIOS */
350    if ( verbose )
351        printf( " searching extended BIOS @ 0x%08x\n", BIOS_BASE2 );
352    seekEntry( BIOS_BASE2 );
353    readEntry( buffer, BIOS_SIZE );
354
355    for ( x = 0; x < BIOS_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
356        if ( buffer[ x ] == MP_SIG ) {
357            *where = 5;
358            *paddr = (x * sizeof( unsigned int )) + BIOS_BASE2;
359            return;
360        }
361    }
362
363    if ( grope ) {
364	/* search additional memory */
365	target = GROPE_AREA1;
366	if ( verbose )
367	    printf( " groping memory @ 0x%08x\n", target );
368	seekEntry( target );
369	readEntry( buffer, GROPE_SIZE );
370
371	for ( x = 0; x < GROPE_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
372	    if ( buffer[ x ] == MP_SIG ) {
373		*where = 6;
374		*paddr = (x * sizeof( unsigned int )) + GROPE_AREA1;
375		return;
376	    }
377	}
378
379	target = GROPE_AREA2;
380	if ( verbose )
381	    printf( " groping memory @ 0x%08x\n", target );
382	seekEntry( target );
383	readEntry( buffer, GROPE_SIZE );
384
385	for ( x = 0; x < GROPE_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
386	    if ( buffer[ x ] == MP_SIG ) {
387		*where = 7;
388		*paddr = (x * sizeof( unsigned int )) + GROPE_AREA2;
389		return;
390	    }
391	}
392    }
393
394    *where = 0;
395    *paddr = (u_int32_t)0;
396}
397
398
399/*
400 *
401 */
402static void
403MPFloatingPointer( u_int32_t paddr, int where, mpfps_t* mpfpsp )
404{
405    mpfps_t mpfps;
406
407    /* map in mpfps structure*/
408    *mpfpsp = mpfps = mapEntry( paddr, sizeof( *mpfps ) );
409
410    /* show its contents */
411    printf( "MP Floating Pointer Structure:\n\n" );
412
413    printf( "  location:\t\t\t" );
414    switch ( where )
415    {
416    case 1:
417	printf( "EBDA\n" );
418	break;
419    case 2:
420	printf( "BIOS base memory\n" );
421	break;
422    case 3:
423	printf( "DEFAULT base memory (639K)\n" );
424	break;
425    case 4:
426	printf( "BIOS\n" );
427	break;
428    case 5:
429	printf( "Extended BIOS\n" );
430	break;
431
432    case 0:
433	printf( "NOT found!\n" );
434	exit( 1 );
435    default:
436	printf( "BOGUS!\n" );
437	exit( 1 );
438    }
439    printf( "  physical address:\t\t0x%08x\n", paddr );
440
441    printf( "  signature:\t\t\t'" );
442    pnstr( mpfps->signature, 4 );
443    printf( "'\n" );
444
445    printf( "  length:\t\t\t%d bytes\n", mpfps->length * 16 );
446    printf( "  version:\t\t\t1.%1d\n", mpfps->spec_rev );
447    printf( "  checksum:\t\t\t0x%02x\n", mpfps->checksum );
448
449    /* bits 0:6 are RESERVED */
450    if ( mpfps->mpfb2 & 0x7f ) {
451        printf( " warning, MP feature byte 2: 0x%02x\n", mpfps->mpfb2 );
452    }
453
454    /* bit 7 is IMCRP */
455    printf( "  mode:\t\t\t\t%s\n", (mpfps->mpfb2 & MPFB2_IMCR_PRESENT) ?
456            "PIC" : "Virtual Wire" );
457
458    /* MP feature bytes 3-5 are expected to be ZERO */
459    if ( mpfps->mpfb3 )
460        printf( " warning, MP feature byte 3 NONZERO!\n" );
461    if ( mpfps->mpfb4 )
462        printf( " warning, MP feature byte 4 NONZERO!\n" );
463    if ( mpfps->mpfb5 )
464        printf( " warning, MP feature byte 5 NONZERO!\n" );
465}
466
467
468/*
469 *
470 */
471static void
472MPConfigDefault( int featureByte )
473{
474    printf( "  MP default config type: %d\n\n", featureByte );
475    switch ( featureByte ) {
476    case 1:
477	printf( "   bus: ISA, APIC: 82489DX\n" );
478	break;
479    case 2:
480	printf( "   bus: EISA, APIC: 82489DX\n" );
481	break;
482    case 3:
483	printf( "   bus: EISA, APIC: 82489DX\n" );
484	break;
485    case 4:
486	printf( "   bus: MCA, APIC: 82489DX\n" );
487	break;
488    case 5:
489	printf( "   bus: ISA+PCI, APIC: Integrated\n" );
490	break;
491    case 6:
492	printf( "   bus: EISA+PCI, APIC: Integrated\n" );
493	break;
494    case 7:
495	printf( "   bus: MCA+PCI, APIC: Integrated\n" );
496	break;
497    default:
498	printf( "   future type\n" );
499	break;
500    }
501
502    switch ( featureByte ) {
503    case 1:
504    case 2:
505    case 3:
506    case 4:
507	nbus = 1;
508	break;
509    case 5:
510    case 6:
511    case 7:
512	nbus = 2;
513	break;
514    default:
515	printf( "   future type\n" );
516	break;
517    }
518
519    ncpu = 2;
520    napic = 1;
521    nintr = 16;
522}
523
524
525/*
526 *
527 */
528static void
529MPConfigTableHeader( u_int32_t pap )
530{
531    mpcth_t	cth;
532    int		x;
533    int		totalSize;
534    int		c;
535    int		oldtype, entrytype;
536    u_int8_t	*entry;
537
538    if ( pap == 0 ) {
539	printf( "MP Configuration Table Header MISSING!\n" );
540        exit( 1 );
541    }
542
543    /* map in cth structure */
544    cth = mapEntry( pap, sizeof( *cth ) );
545
546    printf( "MP Config Table Header:\n\n" );
547
548    printf( "  physical address:\t\t0x%08x\n", pap );
549
550    printf( "  signature:\t\t\t'" );
551    pnstr( cth->signature, 4 );
552    printf( "'\n" );
553
554    printf( "  base table length:\t\t%d\n", cth->base_table_length );
555
556    printf( "  version:\t\t\t1.%1d\n", cth->spec_rev );
557    printf( "  checksum:\t\t\t0x%02x\n", cth->checksum );
558
559    printf( "  OEM ID:\t\t\t'" );
560    pnstr( cth->oem_id, 8 );
561    printf( "'\n" );
562
563    printf( "  Product ID:\t\t\t'" );
564    pnstr( cth->product_id, 12 );
565    printf( "'\n" );
566
567    printf( "  OEM table pointer:\t\t0x%08x\n", cth->oem_table_pointer );
568    printf( "  OEM table size:\t\t%d\n", cth->oem_table_size );
569
570    printf( "  entry count:\t\t\t%d\n", cth->entry_count );
571
572    printf( "  local APIC address:\t\t0x%08x\n", cth->apic_address );
573
574    printf( "  extended table length:\t%d\n", cth->extended_table_length );
575    printf( "  extended table checksum:\t%d\n", cth->extended_table_checksum );
576
577    totalSize = cth->base_table_length - sizeof( struct MPCTH );
578
579    puts( SEP_LINE );
580
581    printf( "MP Config Base Table Entries:\n\n" );
582
583    /* initialize tables */
584    for (x = 0; x < (int)nitems(busses); x++)
585	busses[x] = 0xff;
586
587    for (x = 0; x < (int)nitems(apics); x++)
588	apics[x] = 0xff;
589
590    ncpu = 0;
591    nbus = 0;
592    napic = 0;
593    nintr = 0;
594
595    oldtype = -1;
596    entry = mapEntry(pap + sizeof(*cth), cth->base_table_length);
597    for (c = cth->entry_count; c; c--) {
598	entrytype = *entry;
599	if (entrytype != oldtype)
600	    printf("--\n");
601	if (entrytype < oldtype)
602	    printf("MPTABLE OUT OF ORDER!\n");
603	switch (entrytype) {
604	case MPCT_ENTRY_PROCESSOR:
605	    if (oldtype != MPCT_ENTRY_PROCESSOR)
606		printf( "Processors:\tAPIC ID\tVersion\tState"
607			"\t\tFamily\tModel\tStep\tFlags\n" );
608	    processorEntry((proc_entry_ptr)entry);
609	    entry += sizeof(struct PROCENTRY);
610	    break;
611
612	case MPCT_ENTRY_BUS:
613	    if (oldtype != MPCT_ENTRY_BUS)
614		printf( "Bus:\t\tBus ID\tType\n" );
615	    busEntry((bus_entry_ptr)entry);
616	    entry += sizeof(struct BUSENTRY);
617	    break;
618
619	case MPCT_ENTRY_IOAPIC:
620	    if (oldtype != MPCT_ENTRY_IOAPIC)
621		printf( "I/O APICs:\tAPIC ID\tVersion\tState\t\tAddress\n" );
622	    ioApicEntry((io_apic_entry_ptr)entry);
623	    entry += sizeof(struct IOAPICENTRY);
624	    break;
625
626	case MPCT_ENTRY_INT:
627	    if (oldtype != MPCT_ENTRY_INT)
628		printf( "I/O Ints:\tType\tPolarity    Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
629	    intEntry((int_entry_ptr)entry);
630	    entry += sizeof(struct INTENTRY);
631	    break;
632
633	case MPCT_ENTRY_LOCAL_INT:
634	    if (oldtype != MPCT_ENTRY_LOCAL_INT)
635		printf( "Local Ints:\tType\tPolarity    Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
636	    intEntry((int_entry_ptr)entry);
637	    entry += sizeof(struct INTENTRY);
638	    break;
639
640	default:
641	    printf("MPTABLE HOSED! record type = %d\n", entrytype);
642	    exit(1);
643	}
644	oldtype = entrytype;
645    }
646
647
648#if defined( EXTENDED_PROCESSING_READY )
649    /* process any extended data */
650    if ( cth->extended_table_length ) {
651	ext_entry_ptr ext_entry, end;
652
653	puts( SEP_LINE );
654
655        printf( "MP Config Extended Table Entries:\n\n" );
656
657	ext_entry = mapEntry(pap + cth->base_table_length,
658	    cth->extended_table_length);
659	end = (ext_entry_ptr)((char *)ext_entry + cth->extended_table_length);
660	while (ext_entry < end) {
661	    switch (ext_entry->type) {
662            case MPCT_EXTENTRY_SAS:
663		sasEntry((sas_entry_ptr)ext_entry);
664		break;
665            case MPCT_EXTENTRY_BHD:
666		bhdEntry((bhd_entry_ptr)ext_entry);
667		break;
668            case MPCT_EXTENTRY_CBASM:
669		cbasmEntry((cbasm_entry_ptr)ext_entry);
670		break;
671            default:
672                printf( "Extended Table HOSED!\n" );
673                exit( 1 );
674            }
675
676	    ext_entry = (ext_entry_ptr)((char *)ext_entry + ext_entry->length);
677        }
678    }
679#endif  /* EXTENDED_PROCESSING_READY */
680
681    /* process any OEM data */
682    if ( cth->oem_table_pointer && (cth->oem_table_size > 0) ) {
683#if defined( OEM_PROCESSING_READY )
684# error your on your own here!
685        /* map in oem table structure */
686	oemdata = mapEntry( cth->oem_table_pointer, cth->oem_table_size);
687
688        /** process it */
689#else
690        printf( "\nyou need to modify the source to handle OEM data!\n\n" );
691#endif  /* OEM_PROCESSING_READY */
692    }
693
694    fflush( stdout );
695
696#if defined( RAW_DUMP )
697{
698    int		ofd;
699    void	*dumpbuf;
700
701    ofd = open( "/tmp/mpdump", O_CREAT | O_RDWR, 0666 );
702
703    dumpbuf = mapEntry( paddr, 1024 );
704    write( ofd, dumpbuf, 1024 );
705    close( ofd );
706}
707#endif /* RAW_DUMP */
708}
709
710
711/*
712 *
713 */
714static void
715seekEntry( u_int32_t addr )
716{
717    if ( lseek( pfd, (off_t)addr, SEEK_SET ) < 0 )
718        err( 1, "%s seek", _PATH_MEM );
719}
720
721
722/*
723 *
724 */
725static void
726readEntry( void* entry, int size )
727{
728    if ( read( pfd, entry, size ) != size )
729        err( 1, "readEntry" );
730}
731
732static void *
733mapEntry( u_int32_t addr, int size )
734{
735    void	*p;
736
737    p = mmap( NULL, size, PROT_READ, MAP_SHARED, pfd, addr );
738    if (p == MAP_FAILED)
739	err( 1, "mapEntry" );
740    return (p);
741}
742
743static void
744processorEntry( proc_entry_ptr entry )
745{
746
747    /* count it */
748    ++ncpu;
749
750    printf( "\t\t%2d", entry->apic_id );
751    printf( "\t 0x%2x", entry->apic_version );
752
753    printf( "\t %s, %s",
754            (entry->cpu_flags & PROCENTRY_FLAG_BP) ? "BSP" : "AP",
755            (entry->cpu_flags & PROCENTRY_FLAG_EN) ? "usable" : "unusable" );
756
757    printf( "\t %d\t %d\t %d",
758            (entry->cpu_signature >> 8) & 0x0f,
759            (entry->cpu_signature >> 4) & 0x0f,
760            entry->cpu_signature & 0x0f );
761
762    printf( "\t 0x%04x\n", entry->feature_flags );
763}
764
765
766/*
767 *
768 */
769static int
770lookupBusType( char* name )
771{
772    int x;
773
774    for ( x = 0; x < MAX_BUSTYPE; ++x )
775	if ( strcmp( busTypeTable[ x ].name, name ) == 0 )
776	    return busTypeTable[ x ].type;
777
778    return UNKNOWN_BUSTYPE;
779}
780
781
782static void
783busEntry( bus_entry_ptr entry )
784{
785    int		x;
786    char	name[ 8 ];
787    char	c;
788
789    /* count it */
790    ++nbus;
791
792    printf( "\t\t%2d", entry->bus_id );
793    printf( "\t " ); pnstr( entry->bus_type, 6 ); printf( "\n" );
794
795    for ( x = 0; x < 6; ++x ) {
796	if ( (c = entry->bus_type[ x ]) == ' ' )
797	    break;
798	name[ x ] = c;
799    }
800    name[ x ] = '\0';
801    busses[ entry->bus_id ] = lookupBusType( name );
802}
803
804
805static void
806ioApicEntry( io_apic_entry_ptr entry )
807{
808
809    /* count it */
810    ++napic;
811
812    printf( "\t\t%2d", entry->apic_id );
813    printf( "\t 0x%02x", entry->apic_version );
814    printf( "\t %s",
815            (entry->apic_flags & IOAPICENTRY_FLAG_EN) ? "usable" : "unusable" );
816    printf( "\t\t 0x%x\n", entry->apic_address );
817
818    apics[ entry->apic_id ] = entry->apic_id;
819}
820
821
822static const char *intTypes[] = {
823    "INT", "NMI", "SMI", "ExtINT"
824};
825
826static const char *polarityMode[] = {
827    "conforms", "active-hi", "reserved", "active-lo"
828};
829static const char *triggerMode[] = {
830    "conforms", "edge", "reserved", "level"
831};
832
833static void
834intEntry( int_entry_ptr entry )
835{
836
837    /* count it */
838    if ( entry->type == MPCT_ENTRY_INT )
839	++nintr;
840
841    printf( "\t\t%s", intTypes[ entry->int_type ] );
842
843    printf( "\t%9s", polarityMode[ entry->int_flags & INTENTRY_FLAGS_POLARITY ] );
844    printf( "%12s", triggerMode[ (entry->int_flags & INTENTRY_FLAGS_TRIGGER) >> 2 ] );
845
846    printf( "\t %5d", entry->src_bus_id );
847    if ( busses[ entry->src_bus_id ] == PCI )
848	printf( "\t%2d:%c",
849	        (entry->src_bus_irq >> 2) & 0x1f,
850	        (entry->src_bus_irq & 0x03) + 'A' );
851    else
852	printf( "\t %3d", entry->src_bus_irq );
853    printf( "\t %6d", entry->dst_apic_id );
854    printf( "\t %3d\n", entry->dst_apic_int );
855}
856
857
858static void
859sasEntry( sas_entry_ptr entry )
860{
861
862    printf( "--\nSystem Address Space\n");
863    printf( " bus ID: %d", entry->bus_id );
864    printf( " address type: " );
865    switch ( entry->address_type ) {
866    case SASENTRY_TYPE_IO:
867	printf( "I/O address\n" );
868	break;
869    case SASENTRY_TYPE_MEMORY:
870	printf( "memory address\n" );
871	break;
872    case SASENTRY_TYPE_PREFETCH:
873	printf( "prefetch address\n" );
874	break;
875    default:
876	printf( "UNKNOWN type\n" );
877	break;
878    }
879
880    printf( " address base: 0x%jx\n", (uintmax_t)entry->address_base );
881    printf( " address range: 0x%jx\n", (uintmax_t)entry->address_length );
882}
883
884
885static void
886bhdEntry( bhd_entry_ptr entry )
887{
888
889    printf( "--\nBus Hierarchy\n" );
890    printf( " bus ID: %d", entry->bus_id );
891    printf( " bus info: 0x%02x", entry->bus_info );
892    printf( " parent bus ID: %d\n", entry->parent_bus );
893}
894
895
896static void
897cbasmEntry( cbasm_entry_ptr entry )
898{
899
900    printf( "--\nCompatibility Bus Address\n" );
901    printf( " bus ID: %d", entry->bus_id );
902    printf( " address modifier: %s\n",
903	(entry->address_mod & CBASMENTRY_ADDRESS_MOD_SUBTRACT) ?
904	"subtract" : "add" );
905    printf( " predefined range: 0x%08x\n", entry->predefined_range );
906}
907
908
909/*
910 * do a dmesg output
911 */
912static void
913doDmesg( void )
914{
915    puts( SEP_LINE );
916
917    printf( "dmesg output:\n\n" );
918    fflush( stdout );
919    system( "dmesg" );
920}
921
922
923/*
924 *
925 */
926static void
927pnstr( char* s, int c )
928{
929    char string[ MAXPNSTR + 1 ];
930
931    if ( c > MAXPNSTR )
932        c = MAXPNSTR;
933    strncpy( string, s, c );
934    string[ c ] = '\0';
935    printf( "%s", string );
936}
937