1 /* $OpenBSD: dev_i386.c,v 1.43 2016/09/11 17:52:47 jsing 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_i386.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 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 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 * 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 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 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