1 /* $OpenBSD: dev_i386.c,v 1.23 2019/05/10 21:20:43 mlarkin Exp $ */
2
3 /*
4 * Copyright (c) 1996-1999 Michael Shalayeff
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. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/queue.h>
31 #include <sys/disklabel.h>
32 #include <dev/cons.h>
33
34 #include "libsa.h"
35 #include "biosdev.h"
36 #include "disk.h"
37
38 #ifdef SOFTRAID
39 #include <dev/biovar.h>
40 #include <dev/softraidvar.h>
41 #include <lib/libsa/softraid.h>
42 #include "softraid_amd64.h"
43 #endif
44
45 extern int debug;
46
47 /* XXX use slot for 'rd' for 'hd' pseudo-device */
48 const char bdevs[][4] = {
49 "wd", "", "fd", "", "sd", "st", "cd", "",
50 "", "", "", "", "", "", "", "", "", "hd", ""
51 };
52 const int nbdevs = nitems(bdevs);
53
54 const char cdevs[][4] = {
55 "cn", "", "", "", "", "", "", "",
56 "com", "", "", "", "pc"
57 };
58 const int ncdevs = nitems(cdevs);
59
60 /* pass dev_t to the open routines */
61 int
devopen(struct open_file * f,const char * fname,char ** file)62 devopen(struct open_file *f, const char *fname, char **file)
63 {
64 struct devsw *dp = devsw;
65 register int i, rc = 1;
66
67 *file = (char *)fname;
68
69 #ifdef DEBUG
70 if (debug)
71 printf("devopen:");
72 #endif
73
74 for (i = 0; i < ndevs && rc != 0; dp++, i++) {
75 #ifdef DEBUG
76 if (debug)
77 printf(" %s: ", dp->dv_name);
78 #endif
79 if ((rc = (*dp->dv_open)(f, file)) == 0) {
80 f->f_dev = dp;
81 return 0;
82 }
83 #ifdef DEBUG
84 else if (debug)
85 printf("%d", rc);
86 #endif
87
88 }
89 #ifdef DEBUG
90 if (debug)
91 putchar('\n');
92 #endif
93
94 if ((f->f_flags & F_NODEV) == 0)
95 f->f_dev = dp;
96
97 return rc;
98 }
99
100 void
devboot(dev_t bootdev,char * p)101 devboot(dev_t bootdev, char *p)
102 {
103 #ifdef SOFTRAID
104 struct sr_boot_volume *bv;
105 struct sr_boot_chunk *bc;
106 struct diskinfo *dip = NULL;
107 #endif
108 int sr_boot_vol = -1;
109 int part_type = FS_UNUSED;
110
111 #ifdef SOFTRAID
112 /*
113 * Determine the partition type for the 'a' partition of the
114 * boot device.
115 */
116 TAILQ_FOREACH(dip, &disklist, list)
117 if (dip->bios_info.bios_number == bootdev &&
118 (dip->bios_info.flags & BDI_BADLABEL) == 0)
119 part_type = dip->disklabel.d_partitions[0].p_fstype;
120
121 /*
122 * See if we booted from a disk that is a member of a bootable
123 * softraid volume.
124 */
125 SLIST_FOREACH(bv, &sr_volumes, sbv_link) {
126 if (bv->sbv_flags & BIOC_SCBOOTABLE)
127 SLIST_FOREACH(bc, &bv->sbv_chunks, sbc_link)
128 if (bc->sbc_disk == bootdev)
129 sr_boot_vol = bv->sbv_unit;
130 if (sr_boot_vol != -1)
131 break;
132 }
133 #endif
134
135 if (sr_boot_vol != -1 && part_type != FS_BSDFFS) {
136 *p++ = 's';
137 *p++ = 'r';
138 *p++ = '0' + sr_boot_vol;
139 } else if (bootdev & 0x100) {
140 *p++ = 'c';
141 *p++ = 'd';
142 *p++ = '0';
143 } else {
144 if (bootdev & 0x80)
145 *p++ = 'h';
146 else
147 *p++ = 'f';
148 *p++ = 'd';
149 *p++ = '0' + (bootdev & 0x7f);
150 }
151 *p++ = 'a';
152 *p = '\0';
153 }
154
155 char ttyname_buf[8];
156
157 char *
ttyname(int fd)158 ttyname(int fd)
159 {
160 snprintf(ttyname_buf, sizeof ttyname_buf, "%s%d",
161 cdevs[major(cn_tab->cn_dev)], minor(cn_tab->cn_dev));
162
163 return ttyname_buf;
164 }
165
166 dev_t
ttydev(char * name)167 ttydev(char *name)
168 {
169 int i, unit = -1;
170 char *no = name + strlen(name) - 1;
171
172 while (no >= name && *no >= '0' && *no <= '9')
173 unit = (unit < 0 ? 0 : (unit * 10)) + *no-- - '0';
174 if (no < name || unit < 0)
175 return NODEV;
176 for (i = 0; i < ncdevs; i++)
177 if (strncmp(name, cdevs[i], no - name + 1) == 0)
178 return makedev(i, unit);
179 return NODEV;
180 }
181
182 int
cnspeed(dev_t dev,int sp)183 cnspeed(dev_t dev, int sp)
184 {
185 if (major(dev) == 8) /* comN */
186 return comspeed(dev, sp);
187
188 /* pc0 and anything else */
189 return 9600;
190 }
191