2 * Copyright (c) 2008 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/diskpc98.h>
33 #include <sys/endian.h>
34 #include <sys/kernel.h>
36 #include <sys/limits.h>
38 #include <sys/malloc.h>
39 #include <sys/mutex.h>
40 #include <sys/queue.h>
42 #include <sys/systm.h>
43 #include <sys/sysctl.h>
44 #include <geom/geom.h>
45 #include <geom/part/g_part.h>
47 #include "g_part_if.h"
49 FEATURE(geom_part_pc98, "GEOM partitioning class for PC-9800 disk partitions");
55 struct g_part_pc98_table {
56 struct g_part_table base;
58 u_char table[SECSIZE];
59 u_char menu[MENUSIZE];
62 struct g_part_pc98_entry {
63 struct g_part_entry base;
64 struct pc98_partition ent;
67 static int g_part_pc98_add(struct g_part_table *, struct g_part_entry *,
68 struct g_part_parms *);
69 static int g_part_pc98_bootcode(struct g_part_table *, struct g_part_parms *);
70 static int g_part_pc98_create(struct g_part_table *, struct g_part_parms *);
71 static int g_part_pc98_destroy(struct g_part_table *, struct g_part_parms *);
72 static void g_part_pc98_dumpconf(struct g_part_table *, struct g_part_entry *,
73 struct sbuf *, const char *);
74 static int g_part_pc98_dumpto(struct g_part_table *, struct g_part_entry *);
75 static int g_part_pc98_modify(struct g_part_table *, struct g_part_entry *,
76 struct g_part_parms *);
77 static const char *g_part_pc98_name(struct g_part_table *, struct g_part_entry *,
79 static int g_part_pc98_probe(struct g_part_table *, struct g_consumer *);
80 static int g_part_pc98_read(struct g_part_table *, struct g_consumer *);
81 static int g_part_pc98_setunset(struct g_part_table *, struct g_part_entry *,
82 const char *, unsigned int);
83 static const char *g_part_pc98_type(struct g_part_table *,
84 struct g_part_entry *, char *, size_t);
85 static int g_part_pc98_write(struct g_part_table *, struct g_consumer *);
86 static int g_part_pc98_resize(struct g_part_table *, struct g_part_entry *,
87 struct g_part_parms *);
89 static kobj_method_t g_part_pc98_methods[] = {
90 KOBJMETHOD(g_part_add, g_part_pc98_add),
91 KOBJMETHOD(g_part_bootcode, g_part_pc98_bootcode),
92 KOBJMETHOD(g_part_create, g_part_pc98_create),
93 KOBJMETHOD(g_part_destroy, g_part_pc98_destroy),
94 KOBJMETHOD(g_part_dumpconf, g_part_pc98_dumpconf),
95 KOBJMETHOD(g_part_dumpto, g_part_pc98_dumpto),
96 KOBJMETHOD(g_part_modify, g_part_pc98_modify),
97 KOBJMETHOD(g_part_resize, g_part_pc98_resize),
98 KOBJMETHOD(g_part_name, g_part_pc98_name),
99 KOBJMETHOD(g_part_probe, g_part_pc98_probe),
100 KOBJMETHOD(g_part_read, g_part_pc98_read),
101 KOBJMETHOD(g_part_setunset, g_part_pc98_setunset),
102 KOBJMETHOD(g_part_type, g_part_pc98_type),
103 KOBJMETHOD(g_part_write, g_part_pc98_write),
107 static struct g_part_scheme g_part_pc98_scheme = {
110 sizeof(struct g_part_pc98_table),
111 .gps_entrysz = sizeof(struct g_part_pc98_entry),
112 .gps_minent = PC98_NPARTS,
113 .gps_maxent = PC98_NPARTS,
114 .gps_bootcodesz = BOOTSIZE,
116 G_PART_SCHEME_DECLARE(g_part_pc98);
119 pc98_parse_type(const char *type, u_char *dp_mid, u_char *dp_sid)
125 if (type[0] == '!') {
126 lt = strtol(type + 1, &endp, 0);
127 if (type[1] == '\0' || *endp != '\0' || lt <= 0 ||
130 /* Make sure the active and bootable flags aren't set. */
131 if (lt & ((PC98_SID_ACTIVE << 8) | PC98_MID_BOOTABLE))
133 *dp_mid = (*dp_mid & PC98_MID_BOOTABLE) | (u_char)lt;
134 *dp_sid = (*dp_sid & PC98_SID_ACTIVE) | (u_char)(lt >> 8);
137 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD);
138 if (!strcasecmp(type, alias)) {
139 *dp_mid = (*dp_mid & PC98_MID_BOOTABLE) | PC98_MID_386BSD;
140 *dp_sid = (*dp_sid & PC98_SID_ACTIVE) | PC98_SID_386BSD;
147 pc98_set_slicename(const char *label, u_char *dp_name)
152 if (len > sizeof(((struct pc98_partition *)NULL)->dp_name))
154 bzero(dp_name, sizeof(((struct pc98_partition *)NULL)->dp_name));
155 strncpy(dp_name, label, len);
161 pc98_set_chs(struct g_part_table *table, uint32_t lba, u_short *cylp,
162 u_char *hdp, u_char *secp)
164 uint32_t cyl, hd, sec;
166 sec = lba % table->gpt_sectors + 1;
167 lba /= table->gpt_sectors;
168 hd = lba % table->gpt_heads;
169 lba /= table->gpt_heads;
172 *cylp = htole16(cyl);
178 g_part_pc98_add(struct g_part_table *basetable, struct g_part_entry *baseentry,
179 struct g_part_parms *gpp)
181 struct g_part_pc98_entry *entry;
182 struct g_part_pc98_table *table;
183 uint32_t cyl, start, size;
186 cyl = basetable->gpt_heads * basetable->gpt_sectors;
188 entry = (struct g_part_pc98_entry *)baseentry;
189 table = (struct g_part_pc98_table *)basetable;
191 start = gpp->gpp_start;
192 size = gpp->gpp_size;
196 size = size - cyl + (start % cyl);
197 start = start - (start % cyl) + cyl;
200 size = size - (size % cyl);
204 if (baseentry->gpe_deleted)
205 bzero(&entry->ent, sizeof(entry->ent));
207 entry->ent.dp_mid = entry->ent.dp_sid = 0;
209 KASSERT(baseentry->gpe_start <= start, (__func__));
210 KASSERT(baseentry->gpe_end >= start + size - 1, (__func__));
211 baseentry->gpe_start = start;
212 baseentry->gpe_end = start + size - 1;
213 pc98_set_chs(basetable, baseentry->gpe_start, &entry->ent.dp_scyl,
214 &entry->ent.dp_shd, &entry->ent.dp_ssect);
215 pc98_set_chs(basetable, baseentry->gpe_end, &entry->ent.dp_ecyl,
216 &entry->ent.dp_ehd, &entry->ent.dp_esect);
218 error = pc98_parse_type(gpp->gpp_type, &entry->ent.dp_mid,
223 if (gpp->gpp_parms & G_PART_PARM_LABEL)
224 return (pc98_set_slicename(gpp->gpp_label, entry->ent.dp_name));
230 g_part_pc98_bootcode(struct g_part_table *basetable, struct g_part_parms *gpp)
232 struct g_part_pc98_table *table;
233 const u_char *codeptr;
235 if (gpp->gpp_codesize != BOOTSIZE)
238 table = (struct g_part_pc98_table *)basetable;
239 codeptr = gpp->gpp_codeptr;
240 bcopy(codeptr, table->boot, SECSIZE);
241 bcopy(codeptr + SECSIZE*2, table->menu, MENUSIZE);
247 g_part_pc98_create(struct g_part_table *basetable, struct g_part_parms *gpp)
249 struct g_provider *pp;
250 struct g_part_pc98_table *table;
252 pp = gpp->gpp_provider;
253 if (pp->sectorsize < SECSIZE || pp->mediasize < BOOTSIZE)
255 if (pp->sectorsize > SECSIZE)
258 basetable->gpt_first = basetable->gpt_heads * basetable->gpt_sectors;
259 basetable->gpt_last = MIN(pp->mediasize / SECSIZE, UINT32_MAX) - 1;
261 table = (struct g_part_pc98_table *)basetable;
262 le16enc(table->boot + PC98_MAGICOFS, PC98_MAGIC);
267 g_part_pc98_destroy(struct g_part_table *basetable, struct g_part_parms *gpp)
270 /* Wipe the first two sectors to clear the partitioning. */
271 basetable->gpt_smhead |= 3;
276 g_part_pc98_dumpconf(struct g_part_table *table,
277 struct g_part_entry *baseentry, struct sbuf *sb, const char *indent)
279 struct g_part_pc98_entry *entry;
280 char name[sizeof(entry->ent.dp_name) + 1];
283 entry = (struct g_part_pc98_entry *)baseentry;
285 /* confxml: scheme information */
289 type = entry->ent.dp_mid + (entry->ent.dp_sid << 8);
290 strncpy(name, entry->ent.dp_name, sizeof(name) - 1);
291 name[sizeof(name) - 1] = '\0';
292 if (indent == NULL) {
293 /* conftxt: libdisk compatibility */
294 sbuf_printf(sb, " xs PC98 xt %u sn %s", type, name);
296 /* confxml: partition entry information */
297 sbuf_printf(sb, "%s<label>%s</label>\n", indent, name);
298 if (entry->ent.dp_mid & PC98_MID_BOOTABLE)
299 sbuf_printf(sb, "%s<attrib>bootable</attrib>\n",
301 if (entry->ent.dp_sid & PC98_SID_ACTIVE)
302 sbuf_printf(sb, "%s<attrib>active</attrib>\n", indent);
303 sbuf_printf(sb, "%s<rawtype>%u</rawtype>\n", indent,
309 g_part_pc98_dumpto(struct g_part_table *table, struct g_part_entry *baseentry)
311 struct g_part_pc98_entry *entry;
313 /* Allow dumping to a FreeBSD partition only. */
314 entry = (struct g_part_pc98_entry *)baseentry;
315 return (((entry->ent.dp_mid & PC98_MID_MASK) == PC98_MID_386BSD &&
316 (entry->ent.dp_sid & PC98_SID_MASK) == PC98_SID_386BSD) ? 1 : 0);
320 g_part_pc98_modify(struct g_part_table *basetable,
321 struct g_part_entry *baseentry, struct g_part_parms *gpp)
323 struct g_part_pc98_entry *entry;
326 entry = (struct g_part_pc98_entry *)baseentry;
328 if (gpp->gpp_parms & G_PART_PARM_TYPE) {
329 error = pc98_parse_type(gpp->gpp_type, &entry->ent.dp_mid,
335 if (gpp->gpp_parms & G_PART_PARM_LABEL)
336 return (pc98_set_slicename(gpp->gpp_label, entry->ent.dp_name));
342 g_part_pc98_resize(struct g_part_table *basetable,
343 struct g_part_entry *baseentry, struct g_part_parms *gpp)
345 struct g_part_pc98_entry *entry;
348 cyl = basetable->gpt_heads * basetable->gpt_sectors;
349 size = gpp->gpp_size;
354 size = size - (size % cyl);
358 entry = (struct g_part_pc98_entry *)baseentry;
359 baseentry->gpe_end = baseentry->gpe_start + size - 1;
360 pc98_set_chs(basetable, baseentry->gpe_end, &entry->ent.dp_ecyl,
361 &entry->ent.dp_ehd, &entry->ent.dp_esect);
367 g_part_pc98_name(struct g_part_table *table, struct g_part_entry *baseentry,
368 char *buf, size_t bufsz)
371 snprintf(buf, bufsz, "s%d", baseentry->gpe_index);
376 g_part_pc98_probe(struct g_part_table *table, struct g_consumer *cp)
378 struct g_provider *pp;
380 int error, index, res, sum;
381 uint16_t magic, ecyl, scyl;
385 /* Sanity-check the provider. */
386 if (pp->sectorsize < SECSIZE || pp->mediasize < BOOTSIZE)
388 if (pp->sectorsize > SECSIZE)
391 /* Check that there's a PC98 partition table. */
392 buf = g_read_data(cp, 0L, 2 * SECSIZE, &error);
396 /* We goto out on mismatch. */
399 magic = le16dec(buf + PC98_MAGICOFS);
400 if (magic != PC98_MAGIC)
404 for (index = SECSIZE; index < 2 * SECSIZE; index++)
407 res = G_PART_PROBE_PRI_LOW;
411 for (index = 0; index < PC98_NPARTS; index++) {
412 p = buf + SECSIZE + index * PC98_PARTSIZE;
413 if (p[0] == 0 || p[1] == 0) /* !dp_mid || !dp_sid */
415 scyl = le16dec(p + 10);
416 ecyl = le16dec(p + 14);
417 if (scyl == 0 || ecyl == 0)
419 if (p[8] == p[12] && /* dp_ssect == dp_esect */
420 p[9] == p[13] && /* dp_shd == dp_ehd */
425 res = G_PART_PROBE_PRI_HIGH;
433 g_part_pc98_read(struct g_part_table *basetable, struct g_consumer *cp)
435 struct pc98_partition ent;
436 struct g_provider *pp;
437 struct g_part_pc98_table *table;
438 struct g_part_pc98_entry *entry;
446 table = (struct g_part_pc98_table *)basetable;
447 msize = MIN(pp->mediasize / SECSIZE, UINT32_MAX);
449 buf = g_read_data(cp, 0L, BOOTSIZE, &error);
453 cyl = basetable->gpt_heads * basetable->gpt_sectors;
455 bcopy(buf, table->boot, sizeof(table->boot));
456 bcopy(buf + SECSIZE, table->table, sizeof(table->table));
457 bcopy(buf + SECSIZE*2, table->menu, sizeof(table->menu));
459 for (index = PC98_NPARTS - 1; index >= 0; index--) {
460 p = buf + SECSIZE + index * PC98_PARTSIZE;
465 ent.dp_ipl_sct = p[4];
466 ent.dp_ipl_head = p[5];
467 ent.dp_ipl_cyl = le16dec(p + 6);
470 ent.dp_scyl = le16dec(p + 10);
471 ent.dp_esect = p[12];
473 ent.dp_ecyl = le16dec(p + 14);
474 bcopy(p + 16, ent.dp_name, sizeof(ent.dp_name));
478 start = ent.dp_scyl * cyl;
479 end = (ent.dp_ecyl + 1) * cyl - 1;
480 entry = (struct g_part_pc98_entry *)g_part_new_entry(basetable,
481 index + 1, start, end);
485 basetable->gpt_entries = PC98_NPARTS;
486 basetable->gpt_first = cyl;
487 basetable->gpt_last = msize - 1;
494 g_part_pc98_setunset(struct g_part_table *table, struct g_part_entry *baseentry,
495 const char *attrib, unsigned int set)
497 struct g_part_entry *iter;
498 struct g_part_pc98_entry *entry;
499 int changed, mid, sid;
501 if (baseentry == NULL)
505 if (strcasecmp(attrib, "active") == 0)
507 else if (strcasecmp(attrib, "bootable") == 0)
509 if (mid == 0 && sid == 0)
512 LIST_FOREACH(iter, &table->gpt_entry, gpe_entry) {
513 if (iter->gpe_deleted)
515 if (iter != baseentry)
518 entry = (struct g_part_pc98_entry *)iter;
520 if (mid && !(entry->ent.dp_mid & PC98_MID_BOOTABLE)) {
521 entry->ent.dp_mid |= PC98_MID_BOOTABLE;
524 if (sid && !(entry->ent.dp_sid & PC98_SID_ACTIVE)) {
525 entry->ent.dp_sid |= PC98_SID_ACTIVE;
529 if (mid && (entry->ent.dp_mid & PC98_MID_BOOTABLE)) {
530 entry->ent.dp_mid &= ~PC98_MID_BOOTABLE;
533 if (sid && (entry->ent.dp_sid & PC98_SID_ACTIVE)) {
534 entry->ent.dp_sid &= ~PC98_SID_ACTIVE;
538 if (changed && !iter->gpe_created)
539 iter->gpe_modified = 1;
545 g_part_pc98_type(struct g_part_table *basetable, struct g_part_entry *baseentry,
546 char *buf, size_t bufsz)
548 struct g_part_pc98_entry *entry;
551 entry = (struct g_part_pc98_entry *)baseentry;
552 type = (entry->ent.dp_mid & PC98_MID_MASK) |
553 ((entry->ent.dp_sid & PC98_SID_MASK) << 8);
554 if (type == (PC98_MID_386BSD | (PC98_SID_386BSD << 8)))
555 return (g_part_alias_name(G_PART_ALIAS_FREEBSD));
556 snprintf(buf, bufsz, "!%d", type);
561 g_part_pc98_write(struct g_part_table *basetable, struct g_consumer *cp)
563 struct g_part_entry *baseentry;
564 struct g_part_pc98_entry *entry;
565 struct g_part_pc98_table *table;
569 table = (struct g_part_pc98_table *)basetable;
570 baseentry = LIST_FIRST(&basetable->gpt_entry);
571 for (index = 1; index <= basetable->gpt_entries; index++) {
572 p = table->table + (index - 1) * PC98_PARTSIZE;
573 entry = (baseentry != NULL && index == baseentry->gpe_index)
574 ? (struct g_part_pc98_entry *)baseentry : NULL;
575 if (entry != NULL && !baseentry->gpe_deleted) {
576 p[0] = entry->ent.dp_mid;
577 p[1] = entry->ent.dp_sid;
578 p[2] = entry->ent.dp_dum1;
579 p[3] = entry->ent.dp_dum2;
580 p[4] = entry->ent.dp_ipl_sct;
581 p[5] = entry->ent.dp_ipl_head;
582 le16enc(p + 6, entry->ent.dp_ipl_cyl);
583 p[8] = entry->ent.dp_ssect;
584 p[9] = entry->ent.dp_shd;
585 le16enc(p + 10, entry->ent.dp_scyl);
586 p[12] = entry->ent.dp_esect;
587 p[13] = entry->ent.dp_ehd;
588 le16enc(p + 14, entry->ent.dp_ecyl);
589 bcopy(entry->ent.dp_name, p + 16,
590 sizeof(entry->ent.dp_name));
592 bzero(p, PC98_PARTSIZE);
595 baseentry = LIST_NEXT(baseentry, gpe_entry);
598 error = g_write_data(cp, 0, table->boot, SECSIZE);
600 error = g_write_data(cp, SECSIZE, table->table, SECSIZE);
602 error = g_write_data(cp, SECSIZE*2, table->menu, MENUSIZE);