mptable.c revision 302408 
1/*
2 * Copyright (c) 1996, by Steve Passe
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. The name of the developer may NOT be used to endorse or promote products
11 *    derived from this software without specific prior written permission.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26/*
27 * mptable.c
28 */
29
30#ifndef lint
31static const char rcsid[] =
32  "$FreeBSD: stable/11/usr.sbin/mptable/mptable.c 289767 2015-10-22 21:13:35Z bapt $";
33#endif /* not lint */
34
35/*
36 * this will cause the raw mp table to be dumped to /tmp/mpdump
37 *
38#define RAW_DUMP
39 */
40
41#define MP_SIG			0x5f504d5f	/* _MP_ */
42#define EXTENDED_PROCESSING_READY
43#define OEM_PROCESSING_READY_NOT
44
45#include <sys/param.h>
46#include <sys/mman.h>
47#include <x86/mptable.h>
48#include <err.h>
49#include <fcntl.h>
50#include <paths.h>
51#include <stdint.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55#include <unistd.h>
56
57#define SEP_LINE \
58"\n-------------------------------------------------------------------------------\n"
59
60#define SEP_LINE2 \
61"\n===============================================================================\n"
62
63/* EBDA is @ 40:0e in real-mode terms */
64#define EBDA_POINTER		0x040e		/* location of EBDA pointer */
65
66/* CMOS 'top of mem' is @ 40:13 in real-mode terms */
67#define TOPOFMEM_POINTER	0x0413		/* BIOS: base memory size */
68
69#define DEFAULT_TOPOFMEM	0xa0000
70
71#define BIOS_BASE		0xf0000
72#define BIOS_BASE2		0xe0000
73#define BIOS_SIZE		0x10000
74#define ONE_KBYTE		1024
75
76#define GROPE_AREA1		0x80000
77#define GROPE_AREA2		0x90000
78#define GROPE_SIZE		0x10000
79
80#define MAXPNSTR		132
81
82typedef struct BUSTYPENAME {
83    u_char	type;
84    char	name[ 7 ];
85} busTypeName;
86
87static const busTypeName busTypeTable[] =
88{
89    { CBUS,		"CBUS"   },
90    { CBUSII,		"CBUSII" },
91    { EISA,		"EISA"   },
92    { UNKNOWN_BUSTYPE,	"---"    },
93    { UNKNOWN_BUSTYPE,	"---"    },
94    { ISA,		"ISA"    },
95    { UNKNOWN_BUSTYPE,	"---"    },
96    { UNKNOWN_BUSTYPE,	"---"    },
97    { UNKNOWN_BUSTYPE,	"---"    },
98    { UNKNOWN_BUSTYPE,	"---"    },
99    { UNKNOWN_BUSTYPE,	"---"    },
100    { UNKNOWN_BUSTYPE,	"---"    },
101    { PCI,		"PCI"    },
102    { UNKNOWN_BUSTYPE,	"---"    },
103    { UNKNOWN_BUSTYPE,	"---"    },
104    { UNKNOWN_BUSTYPE,	"---"    },
105    { UNKNOWN_BUSTYPE,	"---"    },
106    { UNKNOWN_BUSTYPE,	"---"    },
107    { UNKNOWN_BUSTYPE,	"---"    }
108};
109
110static const char *whereStrings[] = {
111    "Extended BIOS Data Area",
112    "BIOS top of memory",
113    "Default top of memory",
114    "BIOS",
115    "Extended BIOS",
116    "GROPE AREA #1",
117    "GROPE AREA #2"
118};
119
120static void apic_probe( u_int32_t* paddr, int* where );
121
122static void MPConfigDefault( int featureByte );
123
124static void MPFloatingPointer( u_int32_t paddr, int where, mpfps_t* mpfpsp );
125static void MPConfigTableHeader( u_int32_t pap );
126
127static void seekEntry( u_int32_t addr );
128static void readEntry( void* entry, int size );
129static void *mapEntry( u_int32_t addr, int size );
130
131static void processorEntry( proc_entry_ptr entry );
132static void busEntry( bus_entry_ptr entry );
133static void ioApicEntry( io_apic_entry_ptr entry );
134static void intEntry( int_entry_ptr entry );
135
136static void sasEntry( sas_entry_ptr entry );
137static void bhdEntry( bhd_entry_ptr entry );
138static void cbasmEntry( cbasm_entry_ptr entry );
139
140static void doDmesg( void );
141static void pnstr( char* s, int c );
142
143/* global data */
144static int	pfd;		/* physical /dev/mem fd */
145
146static int	busses[256];
147static int	apics[256];
148
149static int	ncpu;
150static int	nbus;
151static int	napic;
152static int	nintr;
153
154static int	dmesg;
155static int	grope;
156static int	verbose;
157
158static void
159usage( void )
160{
161    fprintf( stderr, "usage: mptable [-dmesg] [-verbose] [-grope] [-help]\n" );
162    exit( 0 );
163}
164
165/*
166 *
167 */
168int
169main( int argc, char *argv[] )
170{
171    u_int32_t	paddr;
172    int		where;
173    mpfps_t	mpfps;
174    int		defaultConfig;
175
176    int		ch;
177
178    /* announce ourselves */
179    puts( SEP_LINE2 );
180
181    printf( "MPTable\n" );
182
183    while ((ch = getopt(argc, argv, "d:g:h:v:")) != -1) {
184	switch(ch) {
185	case 'd':
186	    if ( strcmp( optarg, "mesg") == 0 )
187	        dmesg = 1;
188	    else
189	        dmesg = 0;
190	    break;
191	case 'h':
192	    if ( strcmp( optarg, "elp") == 0 )
193	        usage();
194	    break;
195	case 'g':
196	    if ( strcmp( optarg, "rope") == 0 )
197	        grope = 1;
198	    break;
199	case 'v':
200	    if ( strcmp( optarg, "erbose") == 0 )
201	        verbose = 1;
202	    break;
203	default:
204	    usage();
205	}
206	argc -= optind;
207	argv += optind;
208	optreset = 1;
209	optind = 0;
210    }
211
212    /* open physical memory for access to MP structures */
213    if ( (pfd = open( _PATH_MEM, O_RDONLY )) < 0 )
214        err( 1, "mem open" );
215
216    /* probe for MP structures */
217    apic_probe( &paddr, &where );
218    if ( where <= 0 ) {
219        fprintf( stderr, "\n MP FPS NOT found,\n" );
220        if (!grope)
221            fprintf( stderr, " suggest trying -grope option!!!\n\n" );
222        return 1;
223    }
224
225    if ( verbose )
226        printf( "\n MP FPS found in %s @ physical addr: 0x%08x\n",
227	      whereStrings[ where - 1 ], paddr );
228
229    puts( SEP_LINE );
230
231    /* analyze the MP Floating Pointer Structure */
232    MPFloatingPointer( paddr, where, &mpfps );
233
234    puts( SEP_LINE );
235
236    /* check whether an MP config table exists */
237    if ( (defaultConfig = mpfps->config_type) )
238        MPConfigDefault( defaultConfig );
239    else
240	MPConfigTableHeader( mpfps->pap );
241
242    /* do a dmesg output */
243    if ( dmesg )
244        doDmesg();
245
246    puts( SEP_LINE2 );
247
248    return 0;
249}
250
251
252/*
253 * set PHYSICAL address of MP floating pointer structure
254 */
255#define NEXT(X)		((X) += 4)
256static void
257apic_probe( u_int32_t* paddr, int* where )
258{
259    /*
260     * c rewrite of apic_probe() by Jack F. Vogel
261     */
262
263    int		x;
264    u_short	segment;
265    u_int32_t	target;
266    u_int	buffer[ BIOS_SIZE / sizeof( int ) ];
267
268    if ( verbose )
269        printf( "\n" );
270
271    /* search Extended Bios Data Area, if present */
272    if ( verbose )
273        printf( " looking for EBDA pointer @ 0x%04x, ", EBDA_POINTER );
274    seekEntry( (u_int32_t)EBDA_POINTER );
275    readEntry( &segment, 2 );
276    if ( segment ) {		    /* search EBDA */
277        target = (u_int32_t)segment << 4;
278	if ( verbose )
279	    printf( "found, searching EBDA @ 0x%08x\n", target );
280        seekEntry( target );
281        readEntry( buffer, ONE_KBYTE );
282
283        for ( x = 0; x < ONE_KBYTE / (int)sizeof ( unsigned int ); NEXT(x) ) {
284            if ( buffer[ x ] == MP_SIG ) {
285                *where = 1;
286                *paddr = (x * sizeof( unsigned int )) + target;
287                return;
288            }
289        }
290    }
291    else {
292	if ( verbose )
293	    printf( "NOT found\n" );
294    }
295
296    /* read CMOS for real top of mem */
297    seekEntry( (u_int32_t)TOPOFMEM_POINTER );
298    readEntry( &segment, 2 );
299    --segment;						/* less ONE_KBYTE */
300    target = segment * 1024;
301    if ( verbose )
302        printf( " searching CMOS 'top of mem' @ 0x%08x (%dK)\n",
303	        target, segment );
304    seekEntry( target );
305    readEntry( buffer, ONE_KBYTE );
306
307    for ( x = 0; x < ONE_KBYTE / (int)sizeof ( unsigned int ); NEXT(x) ) {
308        if ( buffer[ x ] == MP_SIG ) {
309            *where = 2;
310            *paddr = (x * sizeof( unsigned int )) + target;
311            return;
312        }
313    }
314
315    /* we don't necessarily believe CMOS, check base of the last 1K of 640K */
316    if ( target != (DEFAULT_TOPOFMEM - 1024)) {
317	target = (DEFAULT_TOPOFMEM - 1024);
318	if ( verbose )
319	    printf( " searching default 'top of mem' @ 0x%08x (%dK)\n",
320		    target, (target / 1024) );
321	seekEntry( target );
322	readEntry( buffer, ONE_KBYTE );
323
324	for ( x = 0; x < ONE_KBYTE / (int)sizeof ( unsigned int ); NEXT(x) ) {
325	    if ( buffer[ x ] == MP_SIG ) {
326		*where = 3;
327		*paddr = (x * sizeof( unsigned int )) + target;
328		return;
329	    }
330	}
331    }
332
333    /* search the BIOS */
334    if ( verbose )
335        printf( " searching BIOS @ 0x%08x\n", BIOS_BASE );
336    seekEntry( BIOS_BASE );
337    readEntry( buffer, BIOS_SIZE );
338
339    for ( x = 0; x < BIOS_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
340        if ( buffer[ x ] == MP_SIG ) {
341            *where = 4;
342            *paddr = (x * sizeof( unsigned int )) + BIOS_BASE;
343            return;
344        }
345    }
346
347    /* search the extended BIOS */
348    if ( verbose )
349        printf( " searching extended BIOS @ 0x%08x\n", BIOS_BASE2 );
350    seekEntry( BIOS_BASE2 );
351    readEntry( buffer, BIOS_SIZE );
352
353    for ( x = 0; x < BIOS_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
354        if ( buffer[ x ] == MP_SIG ) {
355            *where = 5;
356            *paddr = (x * sizeof( unsigned int )) + BIOS_BASE2;
357            return;
358        }
359    }
360
361    if ( grope ) {
362	/* search additional memory */
363	target = GROPE_AREA1;
364	if ( verbose )
365	    printf( " groping memory @ 0x%08x\n", target );
366	seekEntry( target );
367	readEntry( buffer, GROPE_SIZE );
368
369	for ( x = 0; x < GROPE_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
370	    if ( buffer[ x ] == MP_SIG ) {
371		*where = 6;
372		*paddr = (x * sizeof( unsigned int )) + GROPE_AREA1;
373		return;
374	    }
375	}
376
377	target = GROPE_AREA2;
378	if ( verbose )
379	    printf( " groping memory @ 0x%08x\n", target );
380	seekEntry( target );
381	readEntry( buffer, GROPE_SIZE );
382
383	for ( x = 0; x < GROPE_SIZE / (int)sizeof( unsigned int ); NEXT(x) ) {
384	    if ( buffer[ x ] == MP_SIG ) {
385		*where = 7;
386		*paddr = (x * sizeof( unsigned int )) + GROPE_AREA2;
387		return;
388	    }
389	}
390    }
391
392    *where = 0;
393    *paddr = (u_int32_t)0;
394}
395
396
397/*
398 *
399 */
400static void
401MPFloatingPointer( u_int32_t paddr, int where, mpfps_t* mpfpsp )
402{
403    mpfps_t mpfps;
404
405    /* map in mpfps structure*/
406    *mpfpsp = mpfps = mapEntry( paddr, sizeof( *mpfps ) );
407
408    /* show its contents */
409    printf( "MP Floating Pointer Structure:\n\n" );
410
411    printf( "  location:\t\t\t" );
412    switch ( where )
413    {
414    case 1:
415	printf( "EBDA\n" );
416	break;
417    case 2:
418	printf( "BIOS base memory\n" );
419	break;
420    case 3:
421	printf( "DEFAULT base memory (639K)\n" );
422	break;
423    case 4:
424	printf( "BIOS\n" );
425	break;
426    case 5:
427	printf( "Extended BIOS\n" );
428	break;
429
430    case 0:
431	printf( "NOT found!\n" );
432	exit( 1 );
433    default:
434	printf( "BOGUS!\n" );
435	exit( 1 );
436    }
437    printf( "  physical address:\t\t0x%08x\n", paddr );
438
439    printf( "  signature:\t\t\t'" );
440    pnstr( mpfps->signature, 4 );
441    printf( "'\n" );
442
443    printf( "  length:\t\t\t%d bytes\n", mpfps->length * 16 );
444    printf( "  version:\t\t\t1.%1d\n", mpfps->spec_rev );
445    printf( "  checksum:\t\t\t0x%02x\n", mpfps->checksum );
446
447    /* bits 0:6 are RESERVED */
448    if ( mpfps->mpfb2 & 0x7f ) {
449        printf( " warning, MP feature byte 2: 0x%02x\n", mpfps->mpfb2 );
450    }
451
452    /* bit 7 is IMCRP */
453    printf( "  mode:\t\t\t\t%s\n", (mpfps->mpfb2 & MPFB2_IMCR_PRESENT) ?
454            "PIC" : "Virtual Wire" );
455
456    /* MP feature bytes 3-5 are expected to be ZERO */
457    if ( mpfps->mpfb3 )
458        printf( " warning, MP feature byte 3 NONZERO!\n" );
459    if ( mpfps->mpfb4 )
460        printf( " warning, MP feature byte 4 NONZERO!\n" );
461    if ( mpfps->mpfb5 )
462        printf( " warning, MP feature byte 5 NONZERO!\n" );
463}
464
465
466/*
467 *
468 */
469static void
470MPConfigDefault( int featureByte )
471{
472    printf( "  MP default config type: %d\n\n", featureByte );
473    switch ( featureByte ) {
474    case 1:
475	printf( "   bus: ISA, APIC: 82489DX\n" );
476	break;
477    case 2:
478	printf( "   bus: EISA, APIC: 82489DX\n" );
479	break;
480    case 3:
481	printf( "   bus: EISA, APIC: 82489DX\n" );
482	break;
483    case 4:
484	printf( "   bus: MCA, APIC: 82489DX\n" );
485	break;
486    case 5:
487	printf( "   bus: ISA+PCI, APIC: Integrated\n" );
488	break;
489    case 6:
490	printf( "   bus: EISA+PCI, APIC: Integrated\n" );
491	break;
492    case 7:
493	printf( "   bus: MCA+PCI, APIC: Integrated\n" );
494	break;
495    default:
496	printf( "   future type\n" );
497	break;
498    }
499
500    switch ( featureByte ) {
501    case 1:
502    case 2:
503    case 3:
504    case 4:
505	nbus = 1;
506	break;
507    case 5:
508    case 6:
509    case 7:
510	nbus = 2;
511	break;
512    default:
513	printf( "   future type\n" );
514	break;
515    }
516
517    ncpu = 2;
518    napic = 1;
519    nintr = 16;
520}
521
522
523/*
524 *
525 */
526static void
527MPConfigTableHeader( u_int32_t pap )
528{
529    mpcth_t	cth;
530    int		x;
531    int		totalSize;
532    int		c;
533    int		oldtype, entrytype;
534    u_int8_t	*entry;
535
536    if ( pap == 0 ) {
537	printf( "MP Configuration Table Header MISSING!\n" );
538        exit( 1 );
539    }
540
541    /* map in cth structure */
542    cth = mapEntry( pap, sizeof( *cth ) );
543
544    printf( "MP Config Table Header:\n\n" );
545
546    printf( "  physical address:\t\t0x%08x\n", pap );
547
548    printf( "  signature:\t\t\t'" );
549    pnstr( cth->signature, 4 );
550    printf( "'\n" );
551
552    printf( "  base table length:\t\t%d\n", cth->base_table_length );
553
554    printf( "  version:\t\t\t1.%1d\n", cth->spec_rev );
555    printf( "  checksum:\t\t\t0x%02x\n", cth->checksum );
556
557    printf( "  OEM ID:\t\t\t'" );
558    pnstr( cth->oem_id, 8 );
559    printf( "'\n" );
560
561    printf( "  Product ID:\t\t\t'" );
562    pnstr( cth->product_id, 12 );
563    printf( "'\n" );
564
565    printf( "  OEM table pointer:\t\t0x%08x\n", cth->oem_table_pointer );
566    printf( "  OEM table size:\t\t%d\n", cth->oem_table_size );
567
568    printf( "  entry count:\t\t\t%d\n", cth->entry_count );
569
570    printf( "  local APIC address:\t\t0x%08x\n", cth->apic_address );
571
572    printf( "  extended table length:\t%d\n", cth->extended_table_length );
573    printf( "  extended table checksum:\t%d\n", cth->extended_table_checksum );
574
575    totalSize = cth->base_table_length - sizeof( struct MPCTH );
576
577    puts( SEP_LINE );
578
579    printf( "MP Config Base Table Entries:\n\n" );
580
581    /* initialize tables */
582    for (x = 0; x < (int)nitems(busses); x++)
583	busses[x] = 0xff;
584
585    for (x = 0; x < (int)nitems(apics); x++)
586	apics[x] = 0xff;
587
588    ncpu = 0;
589    nbus = 0;
590    napic = 0;
591    nintr = 0;
592
593    oldtype = -1;
594    entry = mapEntry(pap + sizeof(*cth), cth->base_table_length);
595    for (c = cth->entry_count; c; c--) {
596	entrytype = *entry;
597	if (entrytype != oldtype)
598	    printf("--\n");
599	if (entrytype < oldtype)
600	    printf("MPTABLE OUT OF ORDER!\n");
601	switch (entrytype) {
602	case MPCT_ENTRY_PROCESSOR:
603	    if (oldtype != MPCT_ENTRY_PROCESSOR)
604		printf( "Processors:\tAPIC ID\tVersion\tState"
605			"\t\tFamily\tModel\tStep\tFlags\n" );
606	    processorEntry((proc_entry_ptr)entry);
607	    entry += sizeof(struct PROCENTRY);
608	    break;
609
610	case MPCT_ENTRY_BUS:
611	    if (oldtype != MPCT_ENTRY_BUS)
612		printf( "Bus:\t\tBus ID\tType\n" );
613	    busEntry((bus_entry_ptr)entry);
614	    entry += sizeof(struct BUSENTRY);
615	    break;
616
617	case MPCT_ENTRY_IOAPIC:
618	    if (oldtype != MPCT_ENTRY_IOAPIC)
619		printf( "I/O APICs:\tAPIC ID\tVersion\tState\t\tAddress\n" );
620	    ioApicEntry((io_apic_entry_ptr)entry);
621	    entry += sizeof(struct IOAPICENTRY);
622	    break;
623
624	case MPCT_ENTRY_INT:
625	    if (oldtype != MPCT_ENTRY_INT)
626		printf( "I/O Ints:\tType\tPolarity    Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
627	    intEntry((int_entry_ptr)entry);
628	    entry += sizeof(struct INTENTRY);
629	    break;
630
631	case MPCT_ENTRY_LOCAL_INT:
632	    if (oldtype != MPCT_ENTRY_LOCAL_INT)
633		printf( "Local Ints:\tType\tPolarity    Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
634	    intEntry((int_entry_ptr)entry);
635	    entry += sizeof(struct INTENTRY);
636	    break;
637
638	default:
639	    printf("MPTABLE HOSED! record type = %d\n", entrytype);
640	    exit(1);
641	}
642	oldtype = entrytype;
643    }
644
645
646#if defined( EXTENDED_PROCESSING_READY )
647    /* process any extended data */
648    if ( cth->extended_table_length ) {
649	ext_entry_ptr ext_entry, end;
650
651	puts( SEP_LINE );
652
653        printf( "MP Config Extended Table Entries:\n\n" );
654
655	ext_entry = mapEntry(pap + cth->base_table_length,
656	    cth->extended_table_length);
657	end = (ext_entry_ptr)((char *)ext_entry + cth->extended_table_length);
658	while (ext_entry < end) {
659	    switch (ext_entry->type) {
660            case MPCT_EXTENTRY_SAS:
661		sasEntry((sas_entry_ptr)ext_entry);
662		break;
663            case MPCT_EXTENTRY_BHD:
664		bhdEntry((bhd_entry_ptr)ext_entry);
665		break;
666            case MPCT_EXTENTRY_CBASM:
667		cbasmEntry((cbasm_entry_ptr)ext_entry);
668		break;
669            default:
670                printf( "Extended Table HOSED!\n" );
671                exit( 1 );
672            }
673
674	    ext_entry = (ext_entry_ptr)((char *)ext_entry + ext_entry->length);
675        }
676    }
677#endif  /* EXTENDED_PROCESSING_READY */
678
679    /* process any OEM data */
680    if ( cth->oem_table_pointer && (cth->oem_table_size > 0) ) {
681#if defined( OEM_PROCESSING_READY )
682# error your on your own here!
683        /* map in oem table structure */
684	oemdata = mapEntry( cth->oem_table_pointer, cth->oem_table_size);
685
686        /** process it */
687#else
688        printf( "\nyou need to modify the source to handle OEM data!\n\n" );
689#endif  /* OEM_PROCESSING_READY */
690    }
691
692    fflush( stdout );
693
694#if defined( RAW_DUMP )
695{
696    int		ofd;
697    void	*dumpbuf;
698
699    ofd = open( "/tmp/mpdump", O_CREAT | O_RDWR, 0666 );
700
701    dumpbuf = mapEntry( paddr, 1024 );
702    write( ofd, dumpbuf, 1024 );
703    close( ofd );
704}
705#endif /* RAW_DUMP */
706}
707
708
709/*
710 *
711 */
712static void
713seekEntry( u_int32_t addr )
714{
715    if ( lseek( pfd, (off_t)addr, SEEK_SET ) < 0 )
716        err( 1, "%s seek", _PATH_MEM );
717}
718
719
720/*
721 *
722 */
723static void
724readEntry( void* entry, int size )
725{
726    if ( read( pfd, entry, size ) != size )
727        err( 1, "readEntry" );
728}
729
730static void *
731mapEntry( u_int32_t addr, int size )
732{
733    void	*p;
734
735    p = mmap( NULL, size, PROT_READ, MAP_SHARED, pfd, addr );
736    if (p == MAP_FAILED)
737	err( 1, "mapEntry" );
738    return (p);
739}
740
741static void
742processorEntry( proc_entry_ptr entry )
743{
744
745    /* count it */
746    ++ncpu;
747
748    printf( "\t\t%2d", entry->apic_id );
749    printf( "\t 0x%2x", entry->apic_version );
750
751    printf( "\t %s, %s",
752            (entry->cpu_flags & PROCENTRY_FLAG_BP) ? "BSP" : "AP",
753            (entry->cpu_flags & PROCENTRY_FLAG_EN) ? "usable" : "unusable" );
754
755    printf( "\t %d\t %d\t %d",
756            (entry->cpu_signature >> 8) & 0x0f,
757            (entry->cpu_signature >> 4) & 0x0f,
758            entry->cpu_signature & 0x0f );
759
760    printf( "\t 0x%04x\n", entry->feature_flags );
761}
762
763
764/*
765 *
766 */
767static int
768lookupBusType( char* name )
769{
770    int x;
771
772    for ( x = 0; x < MAX_BUSTYPE; ++x )
773	if ( strcmp( busTypeTable[ x ].name, name ) == 0 )
774	    return busTypeTable[ x ].type;
775
776    return UNKNOWN_BUSTYPE;
777}
778
779
780static void
781busEntry( bus_entry_ptr entry )
782{
783    int		x;
784    char	name[ 8 ];
785    char	c;
786
787    /* count it */
788    ++nbus;
789
790    printf( "\t\t%2d", entry->bus_id );
791    printf( "\t " ); pnstr( entry->bus_type, 6 ); printf( "\n" );
792
793    for ( x = 0; x < 6; ++x ) {
794	if ( (c = entry->bus_type[ x ]) == ' ' )
795	    break;
796	name[ x ] = c;
797    }
798    name[ x ] = '\0';
799    busses[ entry->bus_id ] = lookupBusType( name );
800}
801
802
803static void
804ioApicEntry( io_apic_entry_ptr entry )
805{
806
807    /* count it */
808    ++napic;
809
810    printf( "\t\t%2d", entry->apic_id );
811    printf( "\t 0x%02x", entry->apic_version );
812    printf( "\t %s",
813            (entry->apic_flags & IOAPICENTRY_FLAG_EN) ? "usable" : "unusable" );
814    printf( "\t\t 0x%x\n", entry->apic_address );
815
816    apics[ entry->apic_id ] = entry->apic_id;
817}
818
819
820static const char *intTypes[] = {
821    "INT", "NMI", "SMI", "ExtINT"
822};
823
824static const char *polarityMode[] = {
825    "conforms", "active-hi", "reserved", "active-lo"
826};
827static const char *triggerMode[] = {
828    "conforms", "edge", "reserved", "level"
829};
830
831static void
832intEntry( int_entry_ptr entry )
833{
834
835    /* count it */
836    if ( entry->type == MPCT_ENTRY_INT )
837	++nintr;
838
839    printf( "\t\t%s", intTypes[ entry->int_type ] );
840
841    printf( "\t%9s", polarityMode[ entry->int_flags & INTENTRY_FLAGS_POLARITY ] );
842    printf( "%12s", triggerMode[ (entry->int_flags & INTENTRY_FLAGS_TRIGGER) >> 2 ] );
843
844    printf( "\t %5d", entry->src_bus_id );
845    if ( busses[ entry->src_bus_id ] == PCI )
846	printf( "\t%2d:%c",
847	        (entry->src_bus_irq >> 2) & 0x1f,
848	        (entry->src_bus_irq & 0x03) + 'A' );
849    else
850	printf( "\t %3d", entry->src_bus_irq );
851    printf( "\t %6d", entry->dst_apic_id );
852    printf( "\t %3d\n", entry->dst_apic_int );
853}
854
855
856static void
857sasEntry( sas_entry_ptr entry )
858{
859
860    printf( "--\nSystem Address Space\n");
861    printf( " bus ID: %d", entry->bus_id );
862    printf( " address type: " );
863    switch ( entry->address_type ) {
864    case SASENTRY_TYPE_IO:
865	printf( "I/O address\n" );
866	break;
867    case SASENTRY_TYPE_MEMORY:
868	printf( "memory address\n" );
869	break;
870    case SASENTRY_TYPE_PREFETCH:
871	printf( "prefetch address\n" );
872	break;
873    default:
874	printf( "UNKNOWN type\n" );
875	break;
876    }
877
878    printf( " address base: 0x%jx\n", (uintmax_t)entry->address_base );
879    printf( " address range: 0x%jx\n", (uintmax_t)entry->address_length );
880}
881
882
883static void
884bhdEntry( bhd_entry_ptr entry )
885{
886
887    printf( "--\nBus Hierarchy\n" );
888    printf( " bus ID: %d", entry->bus_id );
889    printf( " bus info: 0x%02x", entry->bus_info );
890    printf( " parent bus ID: %d\n", entry->parent_bus );
891}
892
893
894static void
895cbasmEntry( cbasm_entry_ptr entry )
896{
897
898    printf( "--\nCompatibility Bus Address\n" );
899    printf( " bus ID: %d", entry->bus_id );
900    printf( " address modifier: %s\n",
901	(entry->address_mod & CBASMENTRY_ADDRESS_MOD_SUBTRACT) ?
902	"subtract" : "add" );
903    printf( " predefined range: 0x%08x\n", entry->predefined_range );
904}
905
906
907/*
908 * do a dmesg output
909 */
910static void
911doDmesg( void )
912{
913    puts( SEP_LINE );
914
915    printf( "dmesg output:\n\n" );
916    fflush( stdout );
917    system( "dmesg" );
918}
919
920
921/*
922 *
923 */
924static void
925pnstr( char* s, int c )
926{
927    char string[ MAXPNSTR + 1 ];
928
929    if ( c > MAXPNSTR )
930        c = MAXPNSTR;
931    strncpy( string, s, c );
932    string[ c ] = '\0';
933    printf( "%s", string );
934}
935