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biosdisk.c (146010) biosdisk.c (146011)
1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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

--- 11 unchanged lines hidden (view full) ---

20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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

--- 11 unchanged lines hidden (view full) ---

20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/boot/pc98/libpc98/biosdisk.c 146010 2005-05-08 13:30:14Z nyan $");
28__FBSDID("$FreeBSD: head/sys/boot/pc98/libpc98/biosdisk.c 146011 2005-05-08 14:17:28Z nyan $");
29
30/*
31 * BIOS disk device handling.
32 *
33 * Ideas and algorithms from:
34 *
35 * - NetBSD libi386/biosdisk.c
36 * - FreeBSD biosboot/disk.c

--- 39 unchanged lines hidden (view full) ---

76 int od_flags;
77#define BD_MODEINT13 0x0000
78#define BD_MODEEDD1 0x0001
79#define BD_MODEEDD3 0x0002
80#define BD_MODEMASK 0x0003
81#define BD_FLOPPY 0x0004
82#define BD_LABELOK 0x0008
83#define BD_PARTTABOK 0x0010
29
30/*
31 * BIOS disk device handling.
32 *
33 * Ideas and algorithms from:
34 *
35 * - NetBSD libi386/biosdisk.c
36 * - FreeBSD biosboot/disk.c

--- 39 unchanged lines hidden (view full) ---

76 int od_flags;
77#define BD_MODEINT13 0x0000
78#define BD_MODEEDD1 0x0001
79#define BD_MODEEDD3 0x0002
80#define BD_MODEMASK 0x0003
81#define BD_FLOPPY 0x0004
82#define BD_LABELOK 0x0008
83#define BD_PARTTABOK 0x0010
84#ifdef PC98
85#define BD_OPTICAL 0x0020
84#define BD_OPTICAL 0x0020
86#endif
87 struct disklabel od_disklabel;
88 int od_nslices; /* slice count */
89 struct pc98_partition od_slicetab[NDOSPART];
90};
91
92/*
93 * List of BIOS devices, translation from disk unit number to
94 * BIOS unit number.
95 */
96static struct bdinfo
97{
98 int bd_unit; /* BIOS unit number */
99 int bd_flags;
100 int bd_type; /* BIOS 'drive type' (floppy only) */
85 struct disklabel od_disklabel;
86 int od_nslices; /* slice count */
87 struct pc98_partition od_slicetab[NDOSPART];
88};
89
90/*
91 * List of BIOS devices, translation from disk unit number to
92 * BIOS unit number.
93 */
94static struct bdinfo
95{
96 int bd_unit; /* BIOS unit number */
97 int bd_flags;
98 int bd_type; /* BIOS 'drive type' (floppy only) */
101#ifdef PC98
102 int bd_da_unit; /* kernel unit number for da */
99 int bd_da_unit; /* kernel unit number for da */
103#endif
104} bdinfo [MAXBDDEV];
105static int nbdinfo = 0;
106
107static int bd_getgeom(struct open_disk *od);
108static int bd_read(struct open_disk *od, daddr_t dblk, int blks,
109 caddr_t dest);
110static int bd_write(struct open_disk *od, daddr_t dblk, int blks,
111 caddr_t dest);

--- 57 unchanged lines hidden (view full) ---

169}
170
171/*
172 * Quiz the BIOS for disk devices, save a little info about them.
173 */
174static int
175bd_init(void)
176{
100} bdinfo [MAXBDDEV];
101static int nbdinfo = 0;
102
103static int bd_getgeom(struct open_disk *od);
104static int bd_read(struct open_disk *od, daddr_t dblk, int blks,
105 caddr_t dest);
106static int bd_write(struct open_disk *od, daddr_t dblk, int blks,
107 caddr_t dest);

--- 57 unchanged lines hidden (view full) ---

165}
166
167/*
168 * Quiz the BIOS for disk devices, save a little info about them.
169 */
170static int
171bd_init(void)
172{
177#ifdef PC98
178 int base, unit;
179 int da_drive=0, n=-0x10;
180
181 /* sequence 0x90, 0x80, 0xa0 */
182 for (base = 0x90; base <= 0xa0; base += n, n += 0x30) {
183 for (unit = base; (nbdinfo < MAXBDDEV) || ((unit & 0x0f) < 4); unit++) {
184 bdinfo[nbdinfo].bd_unit = unit;
185 bdinfo[nbdinfo].bd_flags = (unit & 0xf0) == 0x90 ? BD_FLOPPY : 0;

--- 19 unchanged lines hidden (view full) ---

205 bdinfo[nbdinfo].bd_da_unit = da_drive++;
206 }
207 /* XXX we need "disk aliases" to make this simpler */
208 printf("BIOS drive %c: is disk%d\n",
209 'A' + nbdinfo, nbdinfo);
210 nbdinfo++;
211 }
212 }
173 int base, unit;
174 int da_drive=0, n=-0x10;
175
176 /* sequence 0x90, 0x80, 0xa0 */
177 for (base = 0x90; base <= 0xa0; base += n, n += 0x30) {
178 for (unit = base; (nbdinfo < MAXBDDEV) || ((unit & 0x0f) < 4); unit++) {
179 bdinfo[nbdinfo].bd_unit = unit;
180 bdinfo[nbdinfo].bd_flags = (unit & 0xf0) == 0x90 ? BD_FLOPPY : 0;

--- 19 unchanged lines hidden (view full) ---

200 bdinfo[nbdinfo].bd_da_unit = da_drive++;
201 }
202 /* XXX we need "disk aliases" to make this simpler */
203 printf("BIOS drive %c: is disk%d\n",
204 'A' + nbdinfo, nbdinfo);
205 nbdinfo++;
206 }
207 }
213#else
214 int base, unit, nfd = 0;
215
216 /* sequence 0, 0x80 */
217 for (base = 0; base <= 0x80; base += 0x80) {
218 for (unit = base; (nbdinfo < MAXBDDEV); unit++) {
219 /* check the BIOS equipment list for number of fixed disks */
220 if((base == 0x80) &&
221 (nfd >= *(unsigned char *)PTOV(BIOS_NUMDRIVES)))
222 break;
223
224 bdinfo[nbdinfo].bd_unit = unit;
225 bdinfo[nbdinfo].bd_flags = (unit < 0x80) ? BD_FLOPPY : 0;
226
227 if (!bd_int13probe(&bdinfo[nbdinfo]))
228 break;
229
230 /* XXX we need "disk aliases" to make this simpler */
231 printf("BIOS drive %c: is disk%d\n",
232 (unit < 0x80) ? ('A' + unit) : ('C' + unit - 0x80), nbdinfo);
233 nbdinfo++;
234 if (base == 0x80)
235 nfd++;
236 }
237 }
238#endif
239 return(0);
240}
241
242/*
243 * Try to detect a device supported by the legacy int13 BIOS
244 */
245static int
246bd_int13probe(struct bdinfo *bd)
247{
208 return(0);
209}
210
211/*
212 * Try to detect a device supported by the legacy int13 BIOS
213 */
214static int
215bd_int13probe(struct bdinfo *bd)
216{
248#ifdef PC98
249 int addr;
250
251 if (bd->bd_flags & BD_FLOPPY) {
252 addr = 0xa155c;
253 } else {
254 if ((bd->bd_unit & 0xf0) == 0x80)
255 addr = 0xa155d;
256 else

--- 7 unchanged lines hidden (view full) ---

264 int media = ((unsigned *)PTOV(0xA1460))[bd->bd_unit & 0x0F] & 0x1F;
265
266 if (media == 7) { /* MO */
267 bd->bd_flags |= BD_MODEINT13 | BD_OPTICAL;
268 return(1);
269 }
270 }
271 return(0);
217 int addr;
218
219 if (bd->bd_flags & BD_FLOPPY) {
220 addr = 0xa155c;
221 } else {
222 if ((bd->bd_unit & 0xf0) == 0x80)
223 addr = 0xa155d;
224 else

--- 7 unchanged lines hidden (view full) ---

232 int media = ((unsigned *)PTOV(0xA1460))[bd->bd_unit & 0x0F] & 0x1F;
233
234 if (media == 7) { /* MO */
235 bd->bd_flags |= BD_MODEINT13 | BD_OPTICAL;
236 return(1);
237 }
238 }
239 return(0);
272#else
273 v86.ctl = V86_FLAGS;
274 v86.addr = 0x13;
275 v86.eax = 0x800;
276 v86.edx = bd->bd_unit;
277 v86int();
278
279 if (!(v86.efl & 0x1) && /* carry clear */
280 ((v86.edx & 0xff) > ((unsigned)bd->bd_unit & 0x7f))) { /* unit # OK */
281 bd->bd_flags |= BD_MODEINT13;
282 bd->bd_type = v86.ebx & 0xff;
283
284 /* Determine if we can use EDD with this device. */
285 v86.eax = 0x4100;
286 v86.edx = bd->bd_unit;
287 v86.ebx = 0x55aa;
288 v86int();
289 if (!(v86.efl & 0x1) && /* carry clear */
290 ((v86.ebx & 0xffff) == 0xaa55) && /* signature */
291 (v86.ecx & 0x1)) { /* packets mode ok */
292 bd->bd_flags |= BD_MODEEDD1;
293 if((v86.eax & 0xff00) > 0x300)
294 bd->bd_flags |= BD_MODEEDD3;
295 }
296 return(1);
297 }
298 return(0);
299#endif
300}
301
302/*
303 * Print information about disks
304 */
305static void
306bd_print(int verbose)
307{
308 int i, j;
309 char line[80];
310 struct i386_devdesc dev;
311 struct open_disk *od;
312 struct pc98_partition *dptr;
313
314 for (i = 0; i < nbdinfo; i++) {
240}
241
242/*
243 * Print information about disks
244 */
245static void
246bd_print(int verbose)
247{
248 int i, j;
249 char line[80];
250 struct i386_devdesc dev;
251 struct open_disk *od;
252 struct pc98_partition *dptr;
253
254 for (i = 0; i < nbdinfo; i++) {
315#ifdef PC98
316 sprintf(line, " disk%d: BIOS drive %c:\n", i, 'A' + i);
255 sprintf(line, " disk%d: BIOS drive %c:\n", i, 'A' + i);
317#else
318 sprintf(line, " disk%d: BIOS drive %c:\n", i,
319 (bdinfo[i].bd_unit < 0x80) ? ('A' + bdinfo[i].bd_unit) : ('C' + bdinfo[i].bd_unit - 0x80));
320#endif
321 pager_output(line);
322
323 /* try to open the whole disk */
324 dev.d_kind.biosdisk.unit = i;
325 dev.d_kind.biosdisk.slice = -1;
326 dev.d_kind.biosdisk.partition = -1;
327
328 if (!bd_opendisk(&od, &dev)) {
329
330 /* Do we have a partition table? */
331 if (od->od_flags & BD_PARTTABOK) {
332 dptr = &od->od_slicetab[0];
333
334 /* Check for a "dedicated" disk */
256 pager_output(line);
257
258 /* try to open the whole disk */
259 dev.d_kind.biosdisk.unit = i;
260 dev.d_kind.biosdisk.slice = -1;
261 dev.d_kind.biosdisk.partition = -1;
262
263 if (!bd_opendisk(&od, &dev)) {
264
265 /* Do we have a partition table? */
266 if (od->od_flags & BD_PARTTABOK) {
267 dptr = &od->od_slicetab[0];
268
269 /* Check for a "dedicated" disk */
335#ifdef PC98
336 for (j = 0; j < od->od_nslices; j++) {
337 switch(dptr[j].dp_mid) {
338 case DOSMID_386BSD:
339 sprintf(line, " disk%ds%d", i, j + 1);
340 bd_printbsdslice(od,
341 dptr[j].dp_scyl * od->od_hds * od->od_sec +
342 dptr[j].dp_shd * od->od_sec + dptr[j].dp_ssect,
343 line, verbose);
344 break;
345 default:
346 break;
347 }
348 }
270 for (j = 0; j < od->od_nslices; j++) {
271 switch(dptr[j].dp_mid) {
272 case DOSMID_386BSD:
273 sprintf(line, " disk%ds%d", i, j + 1);
274 bd_printbsdslice(od,
275 dptr[j].dp_scyl * od->od_hds * od->od_sec +
276 dptr[j].dp_shd * od->od_sec + dptr[j].dp_ssect,
277 line, verbose);
278 break;
279 default:
280 break;
281 }
282 }
349#else
350 if ((dptr[3].dp_typ == DOSPTYP_386BSD) &&
351 (dptr[3].dp_start == 0) &&
352 (dptr[3].dp_size == 50000)) {
353 sprintf(line, " disk%d", i);
354 bd_printbsdslice(od, 0, line, verbose);
355 } else {
356 for (j = 0; j < od->od_nslices; j++) {
357 sprintf(line, " disk%ds%d", i, j + 1);
358 bd_printslice(od, &dptr[j], line, verbose);
359 }
360 }
361#endif
362 }
363 bd_closedisk(od);
364 }
365 }
366}
367
283 }
284 bd_closedisk(od);
285 }
286 }
287}
288
368#ifndef PC98
369/*
289/*
370 * Print information about slices on a disk. For the size calculations we
371 * assume a 512 byte sector.
372 */
373static void
374bd_printslice(struct open_disk *od, struct dos_partition *dp, char *prefix,
375 int verbose)
376{
377 char line[80];
378
379 switch (dp->dp_typ) {
380 case DOSPTYP_386BSD:
381 bd_printbsdslice(od, (daddr_t)dp->dp_start, prefix, verbose);
382 return;
383 case DOSPTYP_LINSWP:
384 if (verbose)
385 sprintf(line, "%s: Linux swap %.6dMB (%d - %d)\n",
386 prefix, dp->dp_size / 2048,
387 dp->dp_start, dp->dp_start + dp->dp_size);
388 else
389 sprintf(line, "%s: Linux swap\n", prefix);
390 break;
391 case DOSPTYP_LINUX:
392 /*
393 * XXX
394 * read the superblock to confirm this is an ext2fs partition?
395 */
396 if (verbose)
397 sprintf(line, "%s: ext2fs %.6dMB (%d - %d)\n", prefix,
398 dp->dp_size / 2048, dp->dp_start,
399 dp->dp_start + dp->dp_size);
400 else
401 sprintf(line, "%s: ext2fs\n", prefix);
402 break;
403 case 0x00: /* unused partition */
404 case DOSPTYP_EXT:
405 return;
406 case 0x01:
407 if (verbose)
408 sprintf(line, "%s: FAT-12 %.6dMB (%d - %d)\n", prefix,
409 dp->dp_size / 2048, dp->dp_start,
410 dp->dp_start + dp->dp_size);
411 else
412 sprintf(line, "%s: FAT-12\n", prefix);
413 break;
414 case 0x04:
415 case 0x06:
416 case 0x0e:
417 if (verbose)
418 sprintf(line, "%s: FAT-16 %.6dMB (%d - %d)\n", prefix,
419 dp->dp_size / 2048, dp->dp_start,
420 dp->dp_start + dp->dp_size);
421 else
422 sprintf(line, "%s: FAT-16\n", prefix);
423 break;
424 case 0x0b:
425 case 0x0c:
426 if (verbose)
427 sprintf(line, "%s: FAT-32 %.6dMB (%d - %d)\n", prefix,
428 dp->dp_size / 2048, dp->dp_start,
429 dp->dp_start + dp->dp_size);
430 else
431 sprintf(line, "%s: FAT-32\n", prefix);
432 break;
433 default:
434 if (verbose)
435 sprintf(line, "%s: Unknown fs: 0x%x %.6dMB (%d - %d)\n",
436 prefix, dp->dp_typ, dp->dp_size / 2048,
437 dp->dp_start, dp->dp_start + dp->dp_size);
438 else
439 sprintf(line, "%s: Unknown fs: 0x%x\n", prefix,
440 dp->dp_typ);
441 }
442 pager_output(line);
443}
444#endif
445
446/*
447 * Print out each valid partition in the disklabel of a FreeBSD slice.
448 * For size calculations, we assume a 512 byte sector size.
449 */
450static void
451bd_printbsdslice(struct open_disk *od, daddr_t offset, char *prefix,
452 int verbose)
453{
454 char line[80];

--- 120 unchanged lines hidden (view full) ---

575 * Following calculations attempt to determine the correct value
576 * for d->od_boff by looking for the slice and partition specified,
577 * or searching for reasonable defaults.
578 */
579
580 /*
581 * Find the slice in the DOS slice table.
582 */
290 * Print out each valid partition in the disklabel of a FreeBSD slice.
291 * For size calculations, we assume a 512 byte sector size.
292 */
293static void
294bd_printbsdslice(struct open_disk *od, daddr_t offset, char *prefix,
295 int verbose)
296{
297 char line[80];

--- 120 unchanged lines hidden (view full) ---

418 * Following calculations attempt to determine the correct value
419 * for d->od_boff by looking for the slice and partition specified,
420 * or searching for reasonable defaults.
421 */
422
423 /*
424 * Find the slice in the DOS slice table.
425 */
583#ifdef PC98
584 if (od->od_flags & BD_FLOPPY) {
585 sector = 0;
586 goto unsliced;
587 }
426 if (od->od_flags & BD_FLOPPY) {
427 sector = 0;
428 goto unsliced;
429 }
588#endif
589 if (bd_read(od, 0, 1, buf)) {
590 DEBUG("error reading MBR");
591 error = EIO;
592 goto out;
593 }
594
595 /*
596 * Check the slice table magic.
597 */
598 if (((u_char)buf[0x1fe] != 0x55) || ((u_char)buf[0x1ff] != 0xaa)) {
599 /* If a slice number was explicitly supplied, this is an error */
600 if (dev->d_kind.biosdisk.slice > 0) {
601 DEBUG("no slice table/MBR (no magic)");
602 error = ENOENT;
603 goto out;
604 }
605 sector = 0;
606 goto unsliced; /* may be a floppy */
607 }
430 if (bd_read(od, 0, 1, buf)) {
431 DEBUG("error reading MBR");
432 error = EIO;
433 goto out;
434 }
435
436 /*
437 * Check the slice table magic.
438 */
439 if (((u_char)buf[0x1fe] != 0x55) || ((u_char)buf[0x1ff] != 0xaa)) {
440 /* If a slice number was explicitly supplied, this is an error */
441 if (dev->d_kind.biosdisk.slice > 0) {
442 DEBUG("no slice table/MBR (no magic)");
443 error = ENOENT;
444 goto out;
445 }
446 sector = 0;
447 goto unsliced; /* may be a floppy */
448 }
608#ifdef PC98
609 if (bd_read(od, 1, 1, buf)) {
610 DEBUG("error reading MBR");
611 error = EIO;
612 goto out;
613 }
449 if (bd_read(od, 1, 1, buf)) {
450 DEBUG("error reading MBR");
451 error = EIO;
452 goto out;
453 }
614#endif
615
616 /*
617 * copy the partition table, then pick up any extended partitions.
618 */
619 bcopy(buf + DOSPARTOFF, &od->od_slicetab,
620 sizeof(struct pc98_partition) * NDOSPART);
454
455 /*
456 * copy the partition table, then pick up any extended partitions.
457 */
458 bcopy(buf + DOSPARTOFF, &od->od_slicetab,
459 sizeof(struct pc98_partition) * NDOSPART);
621#ifdef PC98
622 od->od_nslices = NDOSPART; /* extended slices start here */
460 od->od_nslices = NDOSPART; /* extended slices start here */
623#else
624 od->od_nslices = 4; /* extended slices start here */
625 for (i = 0; i < NDOSPART; i++)
626 bd_checkextended(od, i);
627#endif
628 od->od_flags |= BD_PARTTABOK;
629 dptr = &od->od_slicetab[0];
630
631 /* Is this a request for the whole disk? */
632 if (dev->d_kind.biosdisk.slice == -1) {
633 sector = 0;
634 goto unsliced;
635 }

--- 5 unchanged lines hidden (view full) ---

641 slice = dev->d_kind.biosdisk.slice - 1;
642 if (slice >= od->od_nslices) {
643 DEBUG("slice %d not found", slice);
644 error = ENOENT;
645 goto out;
646 }
647 }
648
461 od->od_flags |= BD_PARTTABOK;
462 dptr = &od->od_slicetab[0];
463
464 /* Is this a request for the whole disk? */
465 if (dev->d_kind.biosdisk.slice == -1) {
466 sector = 0;
467 goto unsliced;
468 }

--- 5 unchanged lines hidden (view full) ---

474 slice = dev->d_kind.biosdisk.slice - 1;
475 if (slice >= od->od_nslices) {
476 DEBUG("slice %d not found", slice);
477 error = ENOENT;
478 goto out;
479 }
480 }
481
649#ifndef PC98
650 /*
651 * Check for the historically bogus MBR found on true dedicated disks
652 */
653 if ((dptr[3].dp_typ == DOSPTYP_386BSD) &&
654 (dptr[3].dp_start == 0) &&
655 (dptr[3].dp_size == 50000)) {
656 sector = 0;
657 goto unsliced;
658 }
659#endif
660
661 /* Try to auto-detect the best slice; this should always give a slice number */
662 if (dev->d_kind.biosdisk.slice == 0) {
663 slice = bd_bestslice(od);
664 if (slice == -1) {
665 error = ENOENT;
666 goto out;
667 }
668 dev->d_kind.biosdisk.slice = slice;
669 }
670
671 dptr = &od->od_slicetab[0];
672 /*
673 * Accept the supplied slice number unequivocally (we may be looking
674 * at a DOS partition).
675 */
676 dptr += (dev->d_kind.biosdisk.slice - 1); /* we number 1-4, offsets are 0-3 */
482 /* Try to auto-detect the best slice; this should always give a slice number */
483 if (dev->d_kind.biosdisk.slice == 0) {
484 slice = bd_bestslice(od);
485 if (slice == -1) {
486 error = ENOENT;
487 goto out;
488 }
489 dev->d_kind.biosdisk.slice = slice;
490 }
491
492 dptr = &od->od_slicetab[0];
493 /*
494 * Accept the supplied slice number unequivocally (we may be looking
495 * at a DOS partition).
496 */
497 dptr += (dev->d_kind.biosdisk.slice - 1); /* we number 1-4, offsets are 0-3 */
677#ifdef PC98
678 sector = dptr->dp_scyl * od->od_hds * od->od_sec +
679 dptr->dp_shd * od->od_sec + dptr->dp_ssect;
680 {
681 int end = dptr->dp_ecyl * od->od_hds * od->od_sec +
682 dptr->dp_ehd * od->od_sec + dptr->dp_esect;
683 DEBUG("slice entry %d at %d, %d sectors",
684 dev->d_kind.biosdisk.slice - 1, sector, end-sector);
685 }
498 sector = dptr->dp_scyl * od->od_hds * od->od_sec +
499 dptr->dp_shd * od->od_sec + dptr->dp_ssect;
500 {
501 int end = dptr->dp_ecyl * od->od_hds * od->od_sec +
502 dptr->dp_ehd * od->od_sec + dptr->dp_esect;
503 DEBUG("slice entry %d at %d, %d sectors",
504 dev->d_kind.biosdisk.slice - 1, sector, end-sector);
505 }
686#else
687 sector = dptr->dp_start;
688 DEBUG("slice entry %d at %d, %d sectors", dev->d_kind.biosdisk.slice - 1, sector, dptr->dp_size);
689#endif
690
691 /*
692 * If we are looking at a BSD slice, and the partition is < 0, assume the 'a' partition
693 */
506
507 /*
508 * If we are looking at a BSD slice, and the partition is < 0, assume the 'a' partition
509 */
694#ifdef PC98
695 if ((dptr->dp_mid == DOSMID_386BSD) && (dev->d_kind.biosdisk.partition < 0))
510 if ((dptr->dp_mid == DOSMID_386BSD) && (dev->d_kind.biosdisk.partition < 0))
696#else
697 if ((dptr->dp_typ == DOSPTYP_386BSD) && (dev->d_kind.biosdisk.partition < 0))
698#endif
699 dev->d_kind.biosdisk.partition = 0;
700
701 unsliced:
702 /*
703 * Now we have the slice offset, look for the partition in the disklabel if we have
704 * a partition to start with.
705 *
706 * XXX we might want to check the label checksum.

--- 43 unchanged lines hidden (view full) ---

750 if (error) {
751 free(od);
752 } else {
753 *odp = od; /* return the open disk */
754 }
755 return(error);
756}
757
511 dev->d_kind.biosdisk.partition = 0;
512
513 unsliced:
514 /*
515 * Now we have the slice offset, look for the partition in the disklabel if we have
516 * a partition to start with.
517 *
518 * XXX we might want to check the label checksum.

--- 43 unchanged lines hidden (view full) ---

562 if (error) {
563 free(od);
564 } else {
565 *odp = od; /* return the open disk */
566 }
567 return(error);
568}
569
758#ifndef PC98
759static void
760bd_checkextended(struct open_disk *od, int slicenum)
761{
762 char buf[BIOSDISK_SECSIZE];
763 struct dos_partition *dp;
764 u_int base;
765 int i, start, end;
766
767 dp = &od->od_slicetab[slicenum];
768 start = od->od_nslices;
769
770 if (dp->dp_size == 0)
771 goto done;
772 if (dp->dp_typ != DOSPTYP_EXT)
773 goto done;
774 if (bd_read(od, (daddr_t)dp->dp_start, 1, buf))
775 goto done;
776 if (((u_char)buf[0x1fe] != 0x55) || ((u_char)buf[0x1ff] != 0xaa)) {
777 DEBUG("no magic in extended table");
778 goto done;
779 }
780 base = dp->dp_start;
781 dp = (struct dos_partition *)(&buf[DOSPARTOFF]);
782 for (i = 0; i < NDOSPART; i++, dp++) {
783 if (dp->dp_size == 0)
784 continue;
785 if (od->od_nslices == NDOSPART)
786 goto done;
787 dp->dp_start += base;
788 bcopy(dp, &od->od_slicetab[od->od_nslices], sizeof(*dp));
789 od->od_nslices++;
790 }
791 end = od->od_nslices;
792
793 /*
794 * now, recursively check the slices we just added
795 */
796 for (i = start; i < end; i++)
797 bd_checkextended(od, i);
798done:
799 return;
800}
801#endif
802
803/*
804 * Search for a slice with the following preferences:
805 *
806 * 1: Active FreeBSD slice
807 * 2: Non-active FreeBSD slice
808 * 3: Active Linux slice
809 * 4: non-active Linux slice
810 * 5: Active FAT/FAT32 slice

--- 18 unchanged lines hidden (view full) ---

829 int pref, preflevel;
830 int i, prefslice;
831
832 prefslice = 0;
833 preflevel = PREF_NONE;
834
835 dp = &od->od_slicetab[0];
836 for (i = 0; i < od->od_nslices; i++, dp++) {
570/*
571 * Search for a slice with the following preferences:
572 *
573 * 1: Active FreeBSD slice
574 * 2: Non-active FreeBSD slice
575 * 3: Active Linux slice
576 * 4: non-active Linux slice
577 * 5: Active FAT/FAT32 slice

--- 18 unchanged lines hidden (view full) ---

596 int pref, preflevel;
597 int i, prefslice;
598
599 prefslice = 0;
600 preflevel = PREF_NONE;
601
602 dp = &od->od_slicetab[0];
603 for (i = 0; i < od->od_nslices; i++, dp++) {
837
838#ifdef PC98
839 switch(dp->dp_mid & 0x7f) {
840 case DOSMID_386BSD & 0x7f: /* FreeBSD */
841 if ((dp->dp_mid & 0x80) &&
842 (preflevel > PREF_FBSD_ACT)) {
843 pref = i;
844 preflevel = PREF_FBSD_ACT;
845 } else if (preflevel > PREF_FBSD) {
846 pref = i;

--- 12 unchanged lines hidden (view full) ---

859 pref = i;
860 preflevel = PREF_DOS_ACT;
861 } else if (preflevel > PREF_DOS) {
862 pref = i;
863 preflevel = PREF_DOS;
864 }
865 break;
866 }
604 switch(dp->dp_mid & 0x7f) {
605 case DOSMID_386BSD & 0x7f: /* FreeBSD */
606 if ((dp->dp_mid & 0x80) &&
607 (preflevel > PREF_FBSD_ACT)) {
608 pref = i;
609 preflevel = PREF_FBSD_ACT;
610 } else if (preflevel > PREF_FBSD) {
611 pref = i;

--- 12 unchanged lines hidden (view full) ---

624 pref = i;
625 preflevel = PREF_DOS_ACT;
626 } else if (preflevel > PREF_DOS) {
627 pref = i;
628 preflevel = PREF_DOS;
629 }
630 break;
631 }
867#else
868 switch (dp->dp_typ) {
869 case DOSPTYP_386BSD: /* FreeBSD */
870 pref = dp->dp_flag & 0x80 ? PREF_FBSD_ACT : PREF_FBSD;
871 break;
872
873 case DOSPTYP_LINUX:
874 pref = dp->dp_flag & 0x80 ? PREF_LINUX_ACT : PREF_LINUX;
875 break;
876
877 case 0x01: /* DOS/Windows */
878 case 0x04:
879 case 0x06:
880 case 0x0b:
881 case 0x0c:
882 case 0x0e:
883 pref = dp->dp_flag & 0x80 ? PREF_DOS_ACT : PREF_DOS;
884 break;
885
886 default:
887 pref = PREF_NONE;
888 }
889 if (pref < preflevel) {
890 preflevel = pref;
891 prefslice = i + 1;
892 }
893#endif
894 }
895 return (prefslice);
896}
897
898static int
899bd_close(struct open_file *f)
900{
901 struct open_disk *od = (struct open_disk *)(((struct i386_devdesc *)(f->f_devdata))->d_kind.biosdisk.data);

--- 109 unchanged lines hidden (view full) ---

1011 if (blks < 0)
1012 return (-1);
1013
1014 bpc = (od->od_sec * od->od_hds); /* blocks per cylinder */
1015 resid = blks;
1016 p = dest;
1017
1018 /* Decide whether we have to bounce */
632 }
633 return (prefslice);
634}
635
636static int
637bd_close(struct open_file *f)
638{
639 struct open_disk *od = (struct open_disk *)(((struct i386_devdesc *)(f->f_devdata))->d_kind.biosdisk.data);

--- 109 unchanged lines hidden (view full) ---

749 if (blks < 0)
750 return (-1);
751
752 bpc = (od->od_sec * od->od_hds); /* blocks per cylinder */
753 resid = blks;
754 p = dest;
755
756 /* Decide whether we have to bounce */
1019#ifdef PC98
1020 if (
1021#else
1022 if ((od->od_unit < 0x80) &&
1023#endif
1024 ((VTOP(dest) >> 16) != (VTOP(dest + blks * BIOSDISK_SECSIZE) >> 16))) {
757 if (((VTOP(dest) >> 16) != (VTOP(dest + blks * BIOSDISK_SECSIZE) >> 16))) {
1025
1026 /*
1027 * There is a 64k physical boundary somewhere in the destination buffer, so we have
1028 * to arrange a suitable bounce buffer. Allocate a buffer twice as large as we
1029 * need to. Use the bottom half unless there is a break there, in which case we
1030 * use the top half.
1031 */
758
759 /*
760 * There is a 64k physical boundary somewhere in the destination buffer, so we have
761 * to arrange a suitable bounce buffer. Allocate a buffer twice as large as we
762 * need to. Use the bottom half unless there is a break there, in which case we
763 * use the top half.
764 */
1032#ifdef PC98
1033 x = min(od->od_sec, (unsigned)blks);
765 x = min(od->od_sec, (unsigned)blks);
1034#else
1035 x = min(FLOPPY_BOUNCEBUF, (unsigned)blks);
1036#endif
1037 bbuf = malloc(x * 2 * BIOSDISK_SECSIZE);
1038 if (((u_int32_t)VTOP(bbuf) & 0xffff0000) == ((u_int32_t)VTOP(bbuf + x * BIOSDISK_SECSIZE) & 0xffff0000)) {
1039 breg = bbuf;
1040 } else {
1041 breg = bbuf + x * BIOSDISK_SECSIZE;
1042 }
1043 maxfer = x; /* limit transfers to bounce region size */
1044 } else {

--- 12 unchanged lines hidden (view full) ---

1057 x = min(od->od_sec - sec, resid);
1058 if (maxfer > 0)
1059 x = min(x, maxfer); /* fit bounce buffer */
1060
1061 /* where do we transfer to? */
1062 xp = bbuf == NULL ? p : breg;
1063
1064 /* correct sector number for 1-based BIOS numbering */
766 bbuf = malloc(x * 2 * BIOSDISK_SECSIZE);
767 if (((u_int32_t)VTOP(bbuf) & 0xffff0000) == ((u_int32_t)VTOP(bbuf + x * BIOSDISK_SECSIZE) & 0xffff0000)) {
768 breg = bbuf;
769 } else {
770 breg = bbuf + x * BIOSDISK_SECSIZE;
771 }
772 maxfer = x; /* limit transfers to bounce region size */
773 } else {

--- 12 unchanged lines hidden (view full) ---

786 x = min(od->od_sec - sec, resid);
787 if (maxfer > 0)
788 x = min(x, maxfer); /* fit bounce buffer */
789
790 /* where do we transfer to? */
791 xp = bbuf == NULL ? p : breg;
792
793 /* correct sector number for 1-based BIOS numbering */
1065#ifdef PC98
1066 if ((od->od_unit & 0xf0) == 0x30 || (od->od_unit & 0xf0) == 0x90)
1067 sec++;
794 if ((od->od_unit & 0xf0) == 0x30 || (od->od_unit & 0xf0) == 0x90)
795 sec++;
1068#else
1069 sec++;
1070#endif
1071
1072 /* Loop retrying the operation a couple of times. The BIOS may also retry. */
1073 for (retry = 0; retry < 3; retry++) {
1074 /* if retrying, reset the drive */
1075 if (retry > 0) {
796
797 /* Loop retrying the operation a couple of times. The BIOS may also retry. */
798 for (retry = 0; retry < 3; retry++) {
799 /* if retrying, reset the drive */
800 if (retry > 0) {
1076#ifdef PC98
1077 v86.ctl = V86_FLAGS;
1078 v86.addr = 0x1b;
1079 v86.eax = 0x0300 | od->od_unit;
801 v86.ctl = V86_FLAGS;
802 v86.addr = 0x1b;
803 v86.eax = 0x0300 | od->od_unit;
1080#else
1081 v86.ctl = V86_FLAGS;
1082 v86.addr = 0x13;
1083 v86.eax = 0;
1084 v86.edx = od->od_unit;
1085#endif
1086 v86int();
1087 }
1088
804 v86int();
805 }
806
1089#ifdef PC98
1090 v86.ctl = V86_FLAGS;
1091 v86.addr = 0x1b;
1092 if (od->od_flags & BD_FLOPPY) {
1093 v86.eax = 0xd600 | od->od_unit;
1094 v86.ecx = 0x0200 | (cyl & 0xff);
1095 }
1096 else {
1097 v86.eax = 0x0600 | od->od_unit;

--- 8 unchanged lines hidden (view full) ---

1106 }
1107 v86.ebx = x * BIOSDISK_SECSIZE;
1108 v86.es = VTOPSEG(xp);
1109 v86.ebp = VTOPOFF(xp);
1110 v86int();
1111 result = (v86.efl & 0x1);
1112 if (result == 0)
1113 break;
807 v86.ctl = V86_FLAGS;
808 v86.addr = 0x1b;
809 if (od->od_flags & BD_FLOPPY) {
810 v86.eax = 0xd600 | od->od_unit;
811 v86.ecx = 0x0200 | (cyl & 0xff);
812 }
813 else {
814 v86.eax = 0x0600 | od->od_unit;

--- 8 unchanged lines hidden (view full) ---

823 }
824 v86.ebx = x * BIOSDISK_SECSIZE;
825 v86.es = VTOPSEG(xp);
826 v86.ebp = VTOPOFF(xp);
827 v86int();
828 result = (v86.efl & 0x1);
829 if (result == 0)
830 break;
1114#else
1115 if(cyl > 1023) {
1116 /* use EDD if the disk supports it, otherwise, return error */
1117 if(od->od_flags & BD_MODEEDD1) {
1118 static unsigned short packet[8];
1119
1120 packet[0] = 0x10;
1121 packet[1] = x;
1122 packet[2] = VTOPOFF(xp);
1123 packet[3] = VTOPSEG(xp);
1124 packet[4] = dblk & 0xffff;
1125 packet[5] = dblk >> 16;
1126 packet[6] = 0;
1127 packet[7] = 0;
1128 v86.ctl = V86_FLAGS;
1129 v86.addr = 0x13;
1130 v86.eax = 0x4200;
1131 v86.edx = od->od_unit;
1132 v86.ds = VTOPSEG(packet);
1133 v86.esi = VTOPOFF(packet);
1134 v86int();
1135 result = (v86.efl & 0x1);
1136 if(result == 0)
1137 break;
1138 } else {
1139 result = 1;
1140 break;
1141 }
1142 } else {
1143 /* Use normal CHS addressing */
1144 v86.ctl = V86_FLAGS;
1145 v86.addr = 0x13;
1146 v86.eax = 0x200 | x;
1147 v86.ecx = ((cyl & 0xff) << 8) | ((cyl & 0x300) >> 2) | sec;
1148 v86.edx = (hd << 8) | od->od_unit;
1149 v86.es = VTOPSEG(xp);
1150 v86.ebx = VTOPOFF(xp);
1151 v86int();
1152 result = (v86.efl & 0x1);
1153 if (result == 0)
1154 break;
1155 }
1156#endif
1157 }
1158
831 }
832
1159#ifdef PC98
1160 DEBUG("%d sectors from %d/%d/%d to %p (0x%x) %s", x, cyl, hd, od->od_flags & BD_FLOPPY ? sec - 1 : sec, p, VTOP(p), result ? "failed" : "ok");
1161 /* BUG here, cannot use v86 in printf because putchar uses it too */
1162 DEBUG("ax = 0x%04x cx = 0x%04x dx = 0x%04x status 0x%x",
1163 od->od_flags & BD_FLOPPY ? 0xd600 | od->od_unit : 0x0600 | od->od_unit,
1164 od->od_flags & BD_FLOPPY ? 0x0200 | cyl : cyl, (hd << 8) | sec,
1165 (v86.eax >> 8) & 0xff);
833 DEBUG("%d sectors from %d/%d/%d to %p (0x%x) %s", x, cyl, hd, od->od_flags & BD_FLOPPY ? sec - 1 : sec, p, VTOP(p), result ? "failed" : "ok");
834 /* BUG here, cannot use v86 in printf because putchar uses it too */
835 DEBUG("ax = 0x%04x cx = 0x%04x dx = 0x%04x status 0x%x",
836 od->od_flags & BD_FLOPPY ? 0xd600 | od->od_unit : 0x0600 | od->od_unit,
837 od->od_flags & BD_FLOPPY ? 0x0200 | cyl : cyl, (hd << 8) | sec,
838 (v86.eax >> 8) & 0xff);
1166#else
1167 DEBUG("%d sectors from %d/%d/%d to %p (0x%x) %s", x, cyl, hd, sec - 1, p, VTOP(p), result ? "failed" : "ok");
1168 /* BUG here, cannot use v86 in printf because putchar uses it too */
1169 DEBUG("ax = 0x%04x cx = 0x%04x dx = 0x%04x status 0x%x",
1170 0x200 | x, ((cyl & 0xff) << 8) | ((cyl & 0x300) >> 2) | sec, (hd << 8) | od->od_unit, (v86.eax >> 8) & 0xff);
1171#endif
1172 if (result) {
1173 if (bbuf != NULL)
1174 free(bbuf);
1175 return(-1);
1176 }
1177 if (bbuf != NULL)
1178 bcopy(breg, p, x * BIOSDISK_SECSIZE);
1179 p += (x * BIOSDISK_SECSIZE);

--- 18 unchanged lines hidden (view full) ---

1198 if (blks < 0)
1199 return (-1);
1200
1201 bpc = (od->od_sec * od->od_hds); /* blocks per cylinder */
1202 resid = blks;
1203 p = dest;
1204
1205 /* Decide whether we have to bounce */
839 if (result) {
840 if (bbuf != NULL)
841 free(bbuf);
842 return(-1);
843 }
844 if (bbuf != NULL)
845 bcopy(breg, p, x * BIOSDISK_SECSIZE);
846 p += (x * BIOSDISK_SECSIZE);

--- 18 unchanged lines hidden (view full) ---

865 if (blks < 0)
866 return (-1);
867
868 bpc = (od->od_sec * od->od_hds); /* blocks per cylinder */
869 resid = blks;
870 p = dest;
871
872 /* Decide whether we have to bounce */
1206#ifdef PC98
1207 if (
1208#else
1209 if ((od->od_unit < 0x80) &&
1210#endif
1211 ((VTOP(dest) >> 16) != (VTOP(dest + blks * BIOSDISK_SECSIZE) >> 16))) {
873 if (((VTOP(dest) >> 16) != (VTOP(dest + blks * BIOSDISK_SECSIZE) >> 16))) {
1212
1213 /*
1214 * There is a 64k physical boundary somewhere in the destination buffer, so we have
1215 * to arrange a suitable bounce buffer. Allocate a buffer twice as large as we
1216 * need to. Use the bottom half unless there is a break there, in which case we
1217 * use the top half.
1218 */
1219
874
875 /*
876 * There is a 64k physical boundary somewhere in the destination buffer, so we have
877 * to arrange a suitable bounce buffer. Allocate a buffer twice as large as we
878 * need to. Use the bottom half unless there is a break there, in which case we
879 * use the top half.
880 */
881
1220#ifdef PC98
1221 x = min(od->od_sec, (unsigned)blks);
882 x = min(od->od_sec, (unsigned)blks);
1222#else
1223 x = min(FLOPPY_BOUNCEBUF, (unsigned)blks);
1224#endif
1225 bbuf = malloc(x * 2 * BIOSDISK_SECSIZE);
1226 if (((u_int32_t)VTOP(bbuf) & 0xffff0000) == ((u_int32_t)VTOP(bbuf + x * BIOSDISK_SECSIZE) & 0xffff0000)) {
1227 breg = bbuf;
1228 } else {
1229 breg = bbuf + x * BIOSDISK_SECSIZE;
1230 }
1231 maxfer = x; /* limit transfers to bounce region size */
1232 } else {

--- 12 unchanged lines hidden (view full) ---

1245 x = min(od->od_sec - sec, resid);
1246 if (maxfer > 0)
1247 x = min(x, maxfer); /* fit bounce buffer */
1248
1249 /* where do we transfer to? */
1250 xp = bbuf == NULL ? p : breg;
1251
1252 /* correct sector number for 1-based BIOS numbering */
883 bbuf = malloc(x * 2 * BIOSDISK_SECSIZE);
884 if (((u_int32_t)VTOP(bbuf) & 0xffff0000) == ((u_int32_t)VTOP(bbuf + x * BIOSDISK_SECSIZE) & 0xffff0000)) {
885 breg = bbuf;
886 } else {
887 breg = bbuf + x * BIOSDISK_SECSIZE;
888 }
889 maxfer = x; /* limit transfers to bounce region size */
890 } else {

--- 12 unchanged lines hidden (view full) ---

903 x = min(od->od_sec - sec, resid);
904 if (maxfer > 0)
905 x = min(x, maxfer); /* fit bounce buffer */
906
907 /* where do we transfer to? */
908 xp = bbuf == NULL ? p : breg;
909
910 /* correct sector number for 1-based BIOS numbering */
1253#ifdef PC98
1254 if ((od->od_unit & 0xf0) == 0x30 || (od->od_unit & 0xf0) == 0x90)
1255 sec++;
911 if ((od->od_unit & 0xf0) == 0x30 || (od->od_unit & 0xf0) == 0x90)
912 sec++;
1256#else
1257 sec++;
1258#endif
1259
913
1260
1261 /* Put your Data In, Put your Data out,
1262 Put your Data In, and shake it all about
1263 */
1264 if (bbuf != NULL)
1265 bcopy(p, breg, x * BIOSDISK_SECSIZE);
1266 p += (x * BIOSDISK_SECSIZE);
1267 dblk += x;
1268 resid -= x;
1269
1270 /* Loop retrying the operation a couple of times. The BIOS may also retry. */
1271 for (retry = 0; retry < 3; retry++) {
1272 /* if retrying, reset the drive */
1273 if (retry > 0) {
914 /* Put your Data In, Put your Data out,
915 Put your Data In, and shake it all about
916 */
917 if (bbuf != NULL)
918 bcopy(p, breg, x * BIOSDISK_SECSIZE);
919 p += (x * BIOSDISK_SECSIZE);
920 dblk += x;
921 resid -= x;
922
923 /* Loop retrying the operation a couple of times. The BIOS may also retry. */
924 for (retry = 0; retry < 3; retry++) {
925 /* if retrying, reset the drive */
926 if (retry > 0) {
1274#ifdef PC98
1275 v86.ctl = V86_FLAGS;
1276 v86.addr = 0x1b;
1277 v86.eax = 0x0300 | od->od_unit;
927 v86.ctl = V86_FLAGS;
928 v86.addr = 0x1b;
929 v86.eax = 0x0300 | od->od_unit;
1278#else
1279 v86.ctl = V86_FLAGS;
1280 v86.addr = 0x13;
1281 v86.eax = 0;
1282 v86.edx = od->od_unit;
1283#endif
1284 v86int();
1285 }
1286
930 v86int();
931 }
932
1287#ifdef PC98
1288 v86.ctl = V86_FLAGS;
1289 v86.addr = 0x1b;
1290 if (od->od_flags & BD_FLOPPY) {
1291 v86.eax = 0xd500 | od->od_unit;
1292 v86.ecx = 0x0200 | (cyl & 0xff);
1293 } else {
1294 v86.eax = 0x0500 | od->od_unit;
1295 v86.ecx = cyl;
1296 }
1297 v86.edx = (hd << 8) | sec;
1298 v86.ebx = x * BIOSDISK_SECSIZE;
1299 v86.es = VTOPSEG(xp);
1300 v86.ebp = VTOPOFF(xp);
1301 v86int();
1302 result = (v86.efl & 0x1);
1303 if (result == 0)
1304 break;
933 v86.ctl = V86_FLAGS;
934 v86.addr = 0x1b;
935 if (od->od_flags & BD_FLOPPY) {
936 v86.eax = 0xd500 | od->od_unit;
937 v86.ecx = 0x0200 | (cyl & 0xff);
938 } else {
939 v86.eax = 0x0500 | od->od_unit;
940 v86.ecx = cyl;
941 }
942 v86.edx = (hd << 8) | sec;
943 v86.ebx = x * BIOSDISK_SECSIZE;
944 v86.es = VTOPSEG(xp);
945 v86.ebp = VTOPOFF(xp);
946 v86int();
947 result = (v86.efl & 0x1);
948 if (result == 0)
949 break;
1305#else
1306 if(cyl > 1023) {
1307 /* use EDD if the disk supports it, otherwise, return error */
1308 if(od->od_flags & BD_MODEEDD1) {
1309 static unsigned short packet[8];
1310
1311 packet[0] = 0x10;
1312 packet[1] = x;
1313 packet[2] = VTOPOFF(xp);
1314 packet[3] = VTOPSEG(xp);
1315 packet[4] = dblk & 0xffff;
1316 packet[5] = dblk >> 16;
1317 packet[6] = 0;
1318 packet[7] = 0;
1319 v86.ctl = V86_FLAGS;
1320 v86.addr = 0x13;
1321 /* Should we Write with verify ?? 0x4302 ? */
1322 v86.eax = 0x4300;
1323 v86.edx = od->od_unit;
1324 v86.ds = VTOPSEG(packet);
1325 v86.esi = VTOPOFF(packet);
1326 v86int();
1327 result = (v86.efl & 0x1);
1328 if(result == 0)
1329 break;
1330 } else {
1331 result = 1;
1332 break;
1333 }
1334 } else {
1335 /* Use normal CHS addressing */
1336 v86.ctl = V86_FLAGS;
1337 v86.addr = 0x13;
1338 v86.eax = 0x300 | x;
1339 v86.ecx = ((cyl & 0xff) << 8) | ((cyl & 0x300) >> 2) | sec;
1340 v86.edx = (hd << 8) | od->od_unit;
1341 v86.es = VTOPSEG(xp);
1342 v86.ebx = VTOPOFF(xp);
1343 v86int();
1344 result = (v86.efl & 0x1);
1345 if (result == 0)
1346 break;
1347 }
1348#endif
1349 }
1350
950 }
951
1351#ifdef PC98
1352 DEBUG("%d sectors from %d/%d/%d to %p (0x%x) %s", x, cyl, hd,
1353 od->od_flags & BD_FLOPPY ? sec - 1 : sec, p, VTOP(p),
1354 result ? "failed" : "ok");
1355 /* BUG here, cannot use v86 in printf because putchar uses it too */
1356 DEBUG("ax = 0x%04x cx = 0x%04x dx = 0x%04x status 0x%x",
1357 od->od_flags & BD_FLOPPY ? 0xd600 | od->od_unit : 0x0600 | od->od_unit,
1358 od->od_flags & BD_FLOPPY ? 0x0200 | cyl : cyl, (hd << 8) | sec,
1359 (v86.eax >> 8) & 0xff);
952 DEBUG("%d sectors from %d/%d/%d to %p (0x%x) %s", x, cyl, hd,
953 od->od_flags & BD_FLOPPY ? sec - 1 : sec, p, VTOP(p),
954 result ? "failed" : "ok");
955 /* BUG here, cannot use v86 in printf because putchar uses it too */
956 DEBUG("ax = 0x%04x cx = 0x%04x dx = 0x%04x status 0x%x",
957 od->od_flags & BD_FLOPPY ? 0xd600 | od->od_unit : 0x0600 | od->od_unit,
958 od->od_flags & BD_FLOPPY ? 0x0200 | cyl : cyl, (hd << 8) | sec,
959 (v86.eax >> 8) & 0xff);
1360#else
1361 DEBUG("%d sectors from %d/%d/%d to %p (0x%x) %s", x, cyl, hd, sec - 1, p, VTOP(p), result ? "failed" : "ok");
1362 /* BUG here, cannot use v86 in printf because putchar uses it too */
1363 DEBUG("ax = 0x%04x cx = 0x%04x dx = 0x%04x status 0x%x",
1364 0x200 | x, ((cyl & 0xff) << 8) | ((cyl & 0x300) >> 2) | sec, (hd << 8) | od->od_unit, (v86.eax >> 8) & 0xff);
1365#endif
960
1366 if (result) {
1367 if (bbuf != NULL)
1368 free(bbuf);
1369 return(-1);
1370 }
1371 }
1372
1373/* hexdump(dest, (blks * BIOSDISK_SECSIZE)); */
1374 if (bbuf != NULL)
1375 free(bbuf);
1376 return(0);
1377}
1378static int
1379bd_getgeom(struct open_disk *od)
1380{
1381
961 if (result) {
962 if (bbuf != NULL)
963 free(bbuf);
964 return(-1);
965 }
966 }
967
968/* hexdump(dest, (blks * BIOSDISK_SECSIZE)); */
969 if (bbuf != NULL)
970 free(bbuf);
971 return(0);
972}
973static int
974bd_getgeom(struct open_disk *od)
975{
976
1382#ifdef PC98
1383 if (od->od_flags & BD_FLOPPY) {
1384 od->od_cyl = 79;
1385 od->od_hds = 2;
1386 od->od_sec = (od->od_unit & 0xf0) == 0x30 ? 18 : 15;
1387 } else if (od->od_flags & BD_OPTICAL) {
1388 od->od_cyl = 0xFFFE;
1389 od->od_hds = 8;
1390 od->od_sec = 32;

--- 4 unchanged lines hidden (view full) ---

1395 v86int();
1396
1397 od->od_cyl = v86.ecx;
1398 od->od_hds = (v86.edx >> 8) & 0xff;
1399 od->od_sec = v86.edx & 0xff;
1400 if (v86.efl & 0x1)
1401 return(1);
1402 }
977 if (od->od_flags & BD_FLOPPY) {
978 od->od_cyl = 79;
979 od->od_hds = 2;
980 od->od_sec = (od->od_unit & 0xf0) == 0x30 ? 18 : 15;
981 } else if (od->od_flags & BD_OPTICAL) {
982 od->od_cyl = 0xFFFE;
983 od->od_hds = 8;
984 od->od_sec = 32;

--- 4 unchanged lines hidden (view full) ---

989 v86int();
990
991 od->od_cyl = v86.ecx;
992 od->od_hds = (v86.edx >> 8) & 0xff;
993 od->od_sec = v86.edx & 0xff;
994 if (v86.efl & 0x1)
995 return(1);
996 }
1403#else
1404 v86.ctl = V86_FLAGS;
1405 v86.addr = 0x13;
1406 v86.eax = 0x800;
1407 v86.edx = od->od_unit;
1408 v86int();
1409
997
1410 if ((v86.efl & 0x1) || /* carry set */
1411 ((v86.edx & 0xff) <= (unsigned)(od->od_unit & 0x7f))) /* unit # bad */
1412 return(1);
1413
1414 /* convert max cyl # -> # of cylinders */
1415 od->od_cyl = ((v86.ecx & 0xc0) << 2) + ((v86.ecx & 0xff00) >> 8) + 1;
1416 /* convert max head # -> # of heads */
1417 od->od_hds = ((v86.edx & 0xff00) >> 8) + 1;
1418 od->od_sec = v86.ecx & 0x3f;
1419#endif
1420
1421 DEBUG("unit 0x%x geometry %d/%d/%d", od->od_unit, od->od_cyl, od->od_hds, od->od_sec);
1422 return(0);
1423}
1424
1425/*
1426 * Return the BIOS geometry of a given "fixed drive" in a format
1427 * suitable for the legacy bootinfo structure. Since the kernel is
1428 * expecting raw int 0x13/0x8 values for N_BIOS_GEOM drives, we

--- 5 unchanged lines hidden (view full) ---

1434 * "000000cc cccccccc hhhhhhhh 00ssssss"; and invalid drives are
1435 * indicated by returning the geometry of a "1.2M" PC-format floppy
1436 * disk. And, incidentally, what is returned is not the geometry as
1437 * such but the highest valid cylinder, head, and sector numbers.
1438 */
1439u_int32_t
1440bd_getbigeom(int bunit)
1441{
998 DEBUG("unit 0x%x geometry %d/%d/%d", od->od_unit, od->od_cyl, od->od_hds, od->od_sec);
999 return(0);
1000}
1001
1002/*
1003 * Return the BIOS geometry of a given "fixed drive" in a format
1004 * suitable for the legacy bootinfo structure. Since the kernel is
1005 * expecting raw int 0x13/0x8 values for N_BIOS_GEOM drives, we

--- 5 unchanged lines hidden (view full) ---

1011 * "000000cc cccccccc hhhhhhhh 00ssssss"; and invalid drives are
1012 * indicated by returning the geometry of a "1.2M" PC-format floppy
1013 * disk. And, incidentally, what is returned is not the geometry as
1014 * such but the highest valid cylinder, head, and sector numbers.
1015 */
1016u_int32_t
1017bd_getbigeom(int bunit)
1018{
1442
1443#ifdef PC98
1444 int hds = 0;
1445 int unit = 0x80; /* IDE HDD */
1446 u_int addr = 0xA155d;
1447
1448 while (unit < 0xa7) {
1449 if (*(u_char *)PTOV(addr) & (1 << (unit & 0x0f)))
1450 if (hds++ == bunit)
1451 break;

--- 13 unchanged lines hidden (view full) ---

1465 return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */
1466 v86.ctl = V86_FLAGS;
1467 v86.addr = 0x1b;
1468 v86.eax = 0x8400 | unit;
1469 v86int();
1470 if (v86.efl & 0x1)
1471 return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */
1472 return ((v86.ecx & 0xffff) << 16) | (v86.edx & 0xffff);
1019 int hds = 0;
1020 int unit = 0x80; /* IDE HDD */
1021 u_int addr = 0xA155d;
1022
1023 while (unit < 0xa7) {
1024 if (*(u_char *)PTOV(addr) & (1 << (unit & 0x0f)))
1025 if (hds++ == bunit)
1026 break;

--- 13 unchanged lines hidden (view full) ---

1040 return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */
1041 v86.ctl = V86_FLAGS;
1042 v86.addr = 0x1b;
1043 v86.eax = 0x8400 | unit;
1044 v86int();
1045 if (v86.efl & 0x1)
1046 return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */
1047 return ((v86.ecx & 0xffff) << 16) | (v86.edx & 0xffff);
1473#else
1474 v86.ctl = V86_FLAGS;
1475 v86.addr = 0x13;
1476 v86.eax = 0x800;
1477 v86.edx = 0x80 + bunit;
1478 v86int();
1479 if (v86.efl & 0x1)
1480 return 0x4f010f;
1481 return ((v86.ecx & 0xc0) << 18) | ((v86.ecx & 0xff00) << 8) |
1482 (v86.edx & 0xff00) | (v86.ecx & 0x3f);
1483#endif
1484}
1485
1486/*
1487 * Return a suitable dev_t value for (dev).
1488 *
1489 * In the case where it looks like (dev) is a SCSI disk, we allow the number of
1490 * IDE disks to be specified in $num_ide_disks. There should be a Better Way.
1491 */

--- 9 unchanged lines hidden (view full) ---

1501
1502 biosdev = bd_unit2bios(dev->d_kind.biosdisk.unit);
1503 DEBUG("unit %d BIOS device %d", dev->d_kind.biosdisk.unit, biosdev);
1504 if (biosdev == -1) /* not a BIOS device */
1505 return(-1);
1506 if (bd_opendisk(&od, dev) != 0) /* oops, not a viable device */
1507 return(-1);
1508
1048}
1049
1050/*
1051 * Return a suitable dev_t value for (dev).
1052 *
1053 * In the case where it looks like (dev) is a SCSI disk, we allow the number of
1054 * IDE disks to be specified in $num_ide_disks. There should be a Better Way.
1055 */

--- 9 unchanged lines hidden (view full) ---

1065
1066 biosdev = bd_unit2bios(dev->d_kind.biosdisk.unit);
1067 DEBUG("unit %d BIOS device %d", dev->d_kind.biosdisk.unit, biosdev);
1068 if (biosdev == -1) /* not a BIOS device */
1069 return(-1);
1070 if (bd_opendisk(&od, dev) != 0) /* oops, not a viable device */
1071 return(-1);
1072
1509#ifdef PC98
1510 if ((biosdev & 0xf0) == 0x90 || (biosdev & 0xf0) == 0x30) {
1073 if ((biosdev & 0xf0) == 0x90 || (biosdev & 0xf0) == 0x30) {
1511#else
1512 if (biosdev < 0x80) {
1513#endif
1514 /* floppy (or emulated floppy) or ATAPI device */
1515 if (bdinfo[dev->d_kind.biosdisk.unit].bd_type == DT_ATAPI) {
1516 /* is an ATAPI disk */
1517 major = WFDMAJOR;
1518 } else {
1519 /* is a floppy disk */
1520 major = FDMAJOR;
1521 }

--- 10 unchanged lines hidden (view full) ---

1532 unitofs = i;
1533 }
1534 } else {
1535 /* assume an IDE disk */
1536 major = WDMAJOR;
1537 }
1538 }
1539 /* default root disk unit number */
1074 /* floppy (or emulated floppy) or ATAPI device */
1075 if (bdinfo[dev->d_kind.biosdisk.unit].bd_type == DT_ATAPI) {
1076 /* is an ATAPI disk */
1077 major = WFDMAJOR;
1078 } else {
1079 /* is a floppy disk */
1080 major = FDMAJOR;
1081 }

--- 10 unchanged lines hidden (view full) ---

1092 unitofs = i;
1093 }
1094 } else {
1095 /* assume an IDE disk */
1096 major = WDMAJOR;
1097 }
1098 }
1099 /* default root disk unit number */
1540#ifdef PC98
1541 if ((biosdev & 0xf0) == 0xa0)
1542 unit = bdinfo[dev->d_kind.biosdisk.unit].bd_da_unit;
1543 else
1544 unit = biosdev & 0xf;
1100 if ((biosdev & 0xf0) == 0xa0)
1101 unit = bdinfo[dev->d_kind.biosdisk.unit].bd_da_unit;
1102 else
1103 unit = biosdev & 0xf;
1545#else
1546 unit = (biosdev & 0x7f) - unitofs;
1547#endif
1548
1549 /* XXX a better kludge to set the root disk unit number */
1550 if ((nip = getenv("root_disk_unit")) != NULL) {
1551 i = strtol(nip, &cp, 0);
1552 /* check for parse error */
1553 if ((cp != nip) && (*cp == 0))
1554 unit = i;
1555 }
1556
1557 rootdev = MAKEBOOTDEV(major,
1558 (dev->d_kind.biosdisk.slice + 1) >> 4, /* XXX slices may be wrong here */
1559 (dev->d_kind.biosdisk.slice + 1) & 0xf,
1560 unit,
1561 dev->d_kind.biosdisk.partition);
1562 DEBUG("dev is 0x%x\n", rootdev);
1563 return(rootdev);
1564}
1104
1105 /* XXX a better kludge to set the root disk unit number */
1106 if ((nip = getenv("root_disk_unit")) != NULL) {
1107 i = strtol(nip, &cp, 0);
1108 /* check for parse error */
1109 if ((cp != nip) && (*cp == 0))
1110 unit = i;
1111 }
1112
1113 rootdev = MAKEBOOTDEV(major,
1114 (dev->d_kind.biosdisk.slice + 1) >> 4, /* XXX slices may be wrong here */
1115 (dev->d_kind.biosdisk.slice + 1) & 0xf,
1116 unit,
1117 dev->d_kind.biosdisk.partition);
1118 DEBUG("dev is 0x%x\n", rootdev);
1119 return(rootdev);
1120}