conf.c revision 1.16
1 /* $NetBSD: conf.c,v 1.16 1998/11/21 20:37:06 scw 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 "raid.h" 52 bdev_decl(raid); 53 #include "vnd.h" 54 bdev_decl(vnd); 55 #include "st.h" 56 bdev_decl(st); 57 #include "cd.h" 58 bdev_decl(cd); 59 #include "md.h" 60 bdev_decl(md); 61 62 struct bdevsw bdevsw[] = 63 { 64 bdev_notdef(), /* 0 */ 65 bdev_notdef(), /* 1 */ 66 bdev_notdef(), /* 2 */ 67 bdev_swap_init(1,sw), /* 3: swap pseudo-device */ 68 bdev_disk_init(NSD,sd), /* 4: SCSI disk */ 69 bdev_disk_init(NCCD,ccd), /* 5: concatenated disk driver */ 70 bdev_disk_init(NVND,vnd), /* 6: vnode disk driver */ 71 bdev_tape_init(NST,st), /* 7: SCSI tape */ 72 bdev_disk_init(NCD,cd), /* 8: SCSI CD-ROM */ 73 bdev_disk_init(NMD,md), /* 9: memory disk - for install tape */ 74 bdev_lkm_dummy(), /* 10 */ 75 bdev_lkm_dummy(), /* 11 */ 76 bdev_lkm_dummy(), /* 12 */ 77 bdev_lkm_dummy(), /* 13 */ 78 bdev_lkm_dummy(), /* 14 */ 79 bdev_lkm_dummy(), /* 15 */ 80 bdev_disk_init(NRAID,raid), /* 16: RAIDframe disk driver */ 81 }; 82 83 int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); 84 85 cdev_decl(cn); 86 cdev_decl(ctty); 87 #define mmread mmrw 88 #define mmwrite mmrw 89 cdev_decl(mm); 90 cdev_decl(sw); 91 92 #include "pty.h" 93 #define ptstty ptytty 94 #define ptsioctl ptyioctl 95 cdev_decl(pts); 96 #define ptctty ptytty 97 #define ptcioctl ptyioctl 98 cdev_decl(ptc); 99 100 cdev_decl(log); 101 cdev_decl(fd); 102 103 #include "zstty.h" 104 cdev_decl(zs); 105 106 cdev_decl(cd); 107 #include "ch.h" 108 cdev_decl(ch); 109 cdev_decl(sd); 110 #include "ss.h" 111 cdev_decl(ss); 112 cdev_decl(st); 113 #include "uk.h" 114 cdev_decl(uk); 115 116 cdev_decl(md); 117 cdev_decl(vnd); 118 cdev_decl(ccd); 119 cdev_decl(raid); 120 121 dev_decl(filedesc,open); 122 123 #include "bpfilter.h" 124 cdev_decl(bpf); 125 126 #include "tun.h" 127 cdev_decl(tun); 128 129 #include "lpt.h" 130 cdev_decl(lpt); 131 /* open, close, write, ioctl */ 132 #define cdev_lpt_init(c,n) { \ 133 dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*)))enodev, \ 134 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*)))enodev, \ 135 0, seltrue, (dev_type_mmap((*))) enodev, 0} 136 137 #include "ipfilter.h" 138 #include "rnd.h" 139 140 #include "scsibus.h" 141 cdev_decl(scsibus); 142 143 struct cdevsw cdevsw[] = 144 { 145 cdev_cn_init(1,cn), /* 0: virtual console */ 146 cdev_ctty_init(1,ctty), /* 1: controlling terminal */ 147 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */ 148 cdev_swap_init(1,sw), /* 3: /dev/drum (swap pseudo-device) */ 149 cdev_tty_init(NPTY,pts), /* 4: pseudo-tty slave */ 150 cdev_ptc_init(NPTY,ptc), /* 5: pseudo-tty master */ 151 cdev_log_init(1,log), /* 6: /dev/klog */ 152 cdev_ipf_init(NIPFILTER,ipl), /* 7: ip-filter device */ 153 cdev_disk_init(NSD,sd), /* 8: SCSI disk */ 154 cdev_notdef(), /* 9 */ 155 cdev_notdef(), /* 10 */ 156 cdev_lpt_init(NLPT,lpt), /* 11: parallel interface */ 157 cdev_tty_init(NZSTTY,zs), /* 12: SCC serial ports */ 158 cdev_notdef(), /* 13 */ 159 cdev_notdef(), /* 14 */ 160 cdev_notdef(), /* 15 */ 161 cdev_notdef(), /* 16 */ 162 cdev_disk_init(NCCD,ccd), /* 17: concatenated disk driver */ 163 cdev_disk_init(NCD,cd), /* 18: SCSI CD-ROM */ 164 cdev_disk_init(NVND,vnd), /* 19: vnode disk */ 165 cdev_tape_init(NST,st), /* 20: SCSI tape */ 166 cdev_fd_init(1,filedesc), /* 21: file descriptor pseudo-dev */ 167 cdev_bpftun_init(NBPFILTER,bpf),/* 22: berkeley packet filter */ 168 cdev_bpftun_init(NTUN,tun), /* 23: network tunnel */ 169 cdev_lkm_init(NLKM,lkm), /* 24: loadable module driver */ 170 cdev_lkm_dummy(), /* 25 */ 171 cdev_lkm_dummy(), /* 26 */ 172 cdev_lkm_dummy(), /* 27 */ 173 cdev_lkm_dummy(), /* 28 */ 174 cdev_lkm_dummy(), /* 29 */ 175 cdev_lkm_dummy(), /* 30 */ 176 cdev_ch_init(NCH,ch), /* 31: SCSI autochanger */ 177 cdev_disk_init(NMD,md), /* 32: memory disk driver */ 178 cdev_scanner_init(NSS,ss), /* 33: SCSI scanner */ 179 cdev_uk_init(NUK,uk), /* 34: SCSI unknown */ 180 cdev_rnd_init(NRND,rnd), /* 35: random source pseudo-device */ 181 cdev_scsibus_init(NSCSIBUS,scsibus), /* 36: SCSI bus */ 182 cdev_disk_init(NRAID,raid) /* 37: RAIDframe disk driver */ 183 }; 184 185 int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); 186 187 int mem_no = 2; /* major device number of memory special file */ 188 189 /* 190 * Swapdev is a fake device implemented 191 * in sw.c used only internally to get to swstrategy. 192 * It cannot be provided to the users, because the 193 * swstrategy routine munches the b_dev and b_blkno entries 194 * before calling the appropriate driver. This would horribly 195 * confuse, e.g. the hashing routines. Instead, /dev/drum is 196 * provided as a character (raw) device. 197 */ 198 dev_t swapdev = makedev(3, 0); 199 200 /* 201 * Returns true if dev is /dev/mem or /dev/kmem. 202 */ 203 iskmemdev(dev) 204 dev_t dev; 205 { 206 207 return (major(dev) == mem_no && minor(dev) < 2); 208 } 209 210 /* 211 * Returns true if dev is /dev/zero. 212 */ 213 iszerodev(dev) 214 dev_t dev; 215 { 216 217 return (major(dev) == mem_no && minor(dev) == 12); 218 } 219 220 static int chrtoblktbl[] = { 221 /* XXXX This needs to be dynamic for LKMs. */ 222 /*VCHR*/ /*VBLK*/ 223 /* 0 */ NODEV, 224 /* 1 */ NODEV, 225 /* 2 */ NODEV, 226 /* 3 */ 3, /* sw */ 227 /* 4 */ NODEV, 228 /* 5 */ NODEV, 229 /* 6 */ NODEV, 230 /* 7 */ NODEV, 231 /* 8 */ 4, /* sd */ 232 /* 9 */ NODEV, 233 /* 10 */ NODEV, 234 /* 11 */ NODEV, 235 /* 12 */ NODEV, 236 /* 13 */ NODEV, 237 /* 14 */ NODEV, 238 /* 15 */ NODEV, 239 /* 16 */ NODEV, 240 /* 17 */ 5, /* ccd */ 241 /* 18 */ 8, /* cd */ 242 /* 19 */ 6, /* vnd */ 243 /* 20 */ 7, /* st */ 244 /* 21 */ NODEV, 245 /* 22 */ NODEV, 246 /* 23 */ NODEV, 247 /* 24 */ NODEV, 248 /* 25 */ NODEV, 249 /* 26 */ NODEV, 250 /* 27 */ NODEV, 251 /* 28 */ NODEV, 252 /* 29 */ NODEV, 253 /* 30 */ NODEV, 254 /* 31 */ NODEV, 255 /* 32 */ 9, /* md */ 256 /* 33 */ NODEV, 257 /* 34 */ NODEV, 258 /* 35 */ NODEV, 259 /* 36 */ NODEV, 260 /* 37 */ 16, /* RAIDframe */ 261 }; 262 263 /* 264 * Convert a character device number to a block device number. 265 */ 266 dev_t 267 chrtoblk(dev) 268 dev_t dev; 269 { 270 int blkmaj; 271 272 if (major(dev) >= nchrdev 273 || major(dev) >= (sizeof(chrtoblktbl) / sizeof(chrtoblktbl[0]))) 274 return (NODEV); 275 blkmaj = chrtoblktbl[major(dev)]; 276 if (blkmaj == NODEV) 277 return (NODEV); 278 return (makedev(blkmaj, minor(dev))); 279 } 280 281 /* 282 * This entire table could be autoconfig()ed but that would mean that 283 * the kernel's idea of the console would be out of sync with that of 284 * the standalone boot. I think it best that they both use the same 285 * known algorithm unless we see a pressing need otherwise. 286 */ 287 #include <dev/cons.h> 288 289 #define zsc_pcccngetc zscngetc 290 #define zsc_pcccnputc zscnputc 291 #define zsc_pcccnpollc nullcnpollc 292 #include "zsc_pcc.h" 293 cons_decl(zsc_pcc); 294 295 struct consdev constab[] = { 296 #if NZSC_PCC > 0 297 cons_init(zsc_pcc), 298 #endif 299 { 0 }, 300 }; 301
Indexes created Mon Sep 29 21:09:56 GMT 2025