conf.c revision 1.8
1 /* $NetBSD: conf.c,v 1.8 1996/11/08 22:00:42 chuck Exp $ */ 2 3 /*- 4 * Copyright (c) 1991 The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)conf.c 7.9 (Berkeley) 5/28/91 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/buf.h> 41 #include <sys/ioctl.h> 42 #include <sys/tty.h> 43 #include <sys/conf.h> 44 #include <sys/vnode.h> 45 46 bdev_decl(sw); 47 #include "sd.h" 48 bdev_decl(sd); 49 #include "ccd.h" 50 bdev_decl(ccd); 51 #include "vnd.h" 52 bdev_decl(vnd); 53 #include "st.h" 54 bdev_decl(st); 55 #include "cd.h" 56 bdev_decl(cd); 57 #include "rd.h" 58 bdev_decl(rd); 59 60 struct bdevsw bdevsw[] = 61 { 62 bdev_notdef(), /* 0 */ 63 bdev_notdef(), /* 1 */ 64 bdev_notdef(), /* 2 */ 65 bdev_swap_init(1,sw), /* 3: swap pseudo-device */ 66 bdev_disk_init(NSD,sd), /* 4: SCSI disk */ 67 bdev_disk_init(NCCD,ccd), /* 5: concatenated disk driver */ 68 bdev_disk_init(NVND,vnd), /* 6: vnode disk driver */ 69 bdev_tape_init(NST,st), /* 7: SCSI tape */ 70 bdev_disk_init(NCD,cd), /* 8: SCSI CD-ROM */ 71 bdev_disk_init(NRD,rd), /* 9: RAM disk - for install tape */ 72 bdev_lkm_dummy(), /* 10 */ 73 bdev_lkm_dummy(), /* 11 */ 74 bdev_lkm_dummy(), /* 12 */ 75 bdev_lkm_dummy(), /* 13 */ 76 bdev_lkm_dummy(), /* 14 */ 77 bdev_lkm_dummy(), /* 15 */ 78 }; 79 80 int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); 81 82 cdev_decl(cn); 83 cdev_decl(ctty); 84 #define mmread mmrw 85 #define mmwrite mmrw 86 cdev_decl(mm); 87 cdev_decl(sw); 88 89 #include "pty.h" 90 #define ptstty ptytty 91 #define ptsioctl ptyioctl 92 cdev_decl(pts); 93 #define ptctty ptytty 94 #define ptcioctl ptyioctl 95 cdev_decl(ptc); 96 97 cdev_decl(log); 98 cdev_decl(fd); 99 100 #include "zstty.h" 101 cdev_decl(zs); 102 103 cdev_decl(cd); 104 #include "ch.h" 105 cdev_decl(ch); 106 cdev_decl(sd); 107 #include "ss.h" 108 cdev_decl(ss); 109 cdev_decl(st); 110 #include "uk.h" 111 cdev_decl(uk); 112 113 cdev_decl(rd); 114 cdev_decl(vnd); 115 cdev_decl(ccd); 116 117 dev_decl(filedesc,open); 118 119 #include "bpfilter.h" 120 cdev_decl(bpf); 121 122 #include "tun.h" 123 cdev_decl(tun); 124 125 struct cdevsw cdevsw[] = 126 { 127 cdev_cn_init(1,cn), /* 0: virtual console */ 128 cdev_ctty_init(1,ctty), /* 1: controlling terminal */ 129 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */ 130 cdev_swap_init(1,sw), /* 3: /dev/drum (swap pseudo-device) */ 131 cdev_tty_init(NPTY,pts), /* 4: pseudo-tty slave */ 132 cdev_ptc_init(NPTY,ptc), /* 5: pseudo-tty master */ 133 cdev_log_init(1,log), /* 6: /dev/klog */ 134 cdev_notdef(), /* 7 */ 135 cdev_disk_init(NSD,sd), /* 8: SCSI disk */ 136 cdev_notdef(), /* 9 */ 137 cdev_notdef(), /* 10 */ 138 cdev_notdef(), /* 11: parallel interface */ 139 cdev_tty_init(NZSTTY,zs), /* 12: SCC serial ports */ 140 cdev_notdef(), /* 13 */ 141 cdev_notdef(), /* 14 */ 142 cdev_notdef(), /* 15 */ 143 cdev_notdef(), /* 16 */ 144 cdev_disk_init(NCCD,ccd), /* 17: concatenated disk driver */ 145 cdev_disk_init(NCD,cd), /* 18: SCSI CD-ROM */ 146 cdev_disk_init(NVND,vnd), /* 19: vnode disk */ 147 cdev_tape_init(NST,st), /* 20: SCSI tape */ 148 cdev_fd_init(1,filedesc), /* 21: file descriptor pseudo-dev */ 149 cdev_bpftun_init(NBPFILTER,bpf),/* 22: berkeley packet filter */ 150 cdev_bpftun_init(NTUN,tun), /* 23: network tunnel */ 151 cdev_lkm_init(NLKM,lkm), /* 24: loadable module driver */ 152 cdev_lkm_dummy(), /* 25 */ 153 cdev_lkm_dummy(), /* 26 */ 154 cdev_lkm_dummy(), /* 27 */ 155 cdev_lkm_dummy(), /* 28 */ 156 cdev_lkm_dummy(), /* 29 */ 157 cdev_lkm_dummy(), /* 30 */ 158 cdev_ch_init(NCH,ch), /* 31: SCSI autochanger */ 159 cdev_disk_init(NRD,rd), /* 32: ram disk driver */ 160 cdev_scanner_init(NSS,ss), /* 33: SCSI scanner */ 161 cdev_uk_init(NUK,uk), /* 34: SCSI unknown */ 162 163 }; 164 165 int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); 166 167 int mem_no = 2; /* major device number of memory special file */ 168 169 /* 170 * Swapdev is a fake device implemented 171 * in sw.c used only internally to get to swstrategy. 172 * It cannot be provided to the users, because the 173 * swstrategy routine munches the b_dev and b_blkno entries 174 * before calling the appropriate driver. This would horribly 175 * confuse, e.g. the hashing routines. Instead, /dev/drum is 176 * provided as a character (raw) device. 177 */ 178 dev_t swapdev = makedev(3, 0); 179 180 /* 181 * Returns true if dev is /dev/mem or /dev/kmem. 182 */ 183 iskmemdev(dev) 184 dev_t dev; 185 { 186 187 return (major(dev) == mem_no && minor(dev) < 2); 188 } 189 190 /* 191 * Returns true if dev is /dev/zero. 192 */ 193 iszerodev(dev) 194 dev_t dev; 195 { 196 197 return (major(dev) == mem_no && minor(dev) == 12); 198 } 199 200 static int chrtoblktbl[] = { 201 /* XXXX This needs to be dynamic for LKMs. */ 202 /*VCHR*/ /*VBLK*/ 203 /* 0 */ NODEV, 204 /* 1 */ NODEV, 205 /* 2 */ NODEV, 206 /* 3 */ 3, /* sw */ 207 /* 4 */ NODEV, 208 /* 5 */ NODEV, 209 /* 6 */ NODEV, 210 /* 7 */ NODEV, 211 /* 8 */ 4, /* sd */ 212 /* 9 */ NODEV, 213 /* 10 */ NODEV, 214 /* 11 */ NODEV, 215 /* 12 */ NODEV, 216 /* 13 */ NODEV, 217 /* 14 */ NODEV, 218 /* 15 */ NODEV, 219 /* 16 */ NODEV, 220 /* 17 */ 5, /* ccd */ 221 /* 18 */ 8, /* cd */ 222 /* 19 */ 6, /* vnd */ 223 /* 20 */ 7, /* st */ 224 /* 21 */ NODEV, 225 /* 22 */ NODEV, 226 /* 23 */ NODEV, 227 /* 24 */ NODEV, 228 /* 25 */ NODEV, 229 /* 26 */ NODEV, 230 /* 27 */ NODEV, 231 /* 28 */ NODEV, 232 /* 29 */ NODEV, 233 /* 30 */ NODEV, 234 /* 31 */ NODEV, 235 /* 32 */ 9, /* rd */ 236 }; 237 238 /* 239 * Convert a character device number to a block device number. 240 */ 241 chrtoblk(dev) 242 dev_t dev; 243 { 244 int blkmaj; 245 246 if (major(dev) >= nchrdev 247 || major(dev) >= (sizeof(chrtoblktbl) / sizeof(chrtoblktbl[0]))) 248 return (NODEV); 249 blkmaj = chrtoblktbl[major(dev)]; 250 if (blkmaj == NODEV) 251 return (NODEV); 252 return (makedev(blkmaj, minor(dev))); 253 } 254 255 /* 256 * This entire table could be autoconfig()ed but that would mean that 257 * the kernel's idea of the console would be out of sync with that of 258 * the standalone boot. I think it best that they both use the same 259 * known algorithm unless we see a pressing need otherwise. 260 */ 261 #include <dev/cons.h> 262 263 #define zsc_pcccngetc zscngetc 264 #define zsc_pcccnputc zscnputc 265 #define zsc_pcccnpollc nullcnpollc 266 #include "zsc_pcc.h" 267 cons_decl(zsc_pcc); 268 269 struct consdev constab[] = { 270 #if NZSC_PCC > 0 271 cons_init(zsc_pcc), 272 #endif 273 { 0 }, 274 }; 275
Indexes created Mon Sep 29 21:09:56 GMT 2025