1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * %sccs.include.redist.c% 11 * 12 * @(#)conf.c 8.3 (Berkeley) 01/21/94 13 */ 14 15 #include <sys/param.h> 16 #include <sys/systm.h> 17 #include <sys/buf.h> 18 #include <sys/ioctl.h> 19 #include <sys/tty.h> 20 #include <sys/conf.h> 21 22 int rawread __P((dev_t, struct uio *, int)); 23 int rawwrite __P((dev_t, struct uio *, int)); 24 int swstrategy __P((struct buf *)); 25 int ttselect __P((dev_t, int, struct proc *)); 26 27 #define dev_type_open(n) int n __P((dev_t, int, int, struct proc *)) 28 #define dev_type_close(n) int n __P((dev_t, int, int, struct proc *)) 29 #define dev_type_strategy(n) int n __P((struct buf *)) 30 #define dev_type_ioctl(n) \ 31 int n __P((dev_t, int, caddr_t, int, struct proc *)) 32 33 /* bdevsw-specific types */ 34 #define dev_type_dump(n) int n __P((dev_t)) 35 #define dev_type_size(n) int n __P((dev_t)) 36 37 #define dev_decl(n,t) __CONCAT(dev_type_,t)(__CONCAT(n,t)) 38 #define dev_init(c,n,t) \ 39 (c > 0 ? __CONCAT(n,t) : (__CONCAT(dev_type_,t)((*))) enxio) 40 41 /* bdevsw-specific initializations */ 42 #define dev_size_init(c,n) (c > 0 ? __CONCAT(n,size) : 0) 43 44 #define bdev_decl(n) \ 45 dev_decl(n,open); dev_decl(n,close); dev_decl(n,strategy); \ 46 dev_decl(n,ioctl); dev_decl(n,dump); dev_decl(n,size) 47 48 #define bdev_disk_init(c,n) { \ 49 dev_init(c,n,open), (dev_type_close((*))) nullop, \ 50 dev_init(c,n,strategy), dev_init(c,n,ioctl), \ 51 dev_init(c,n,dump), dev_size_init(c,n), 0 } 52 53 #define bdev_tape_init(c,n) { \ 54 dev_init(c,n,open), dev_init(c,n,close), \ 55 dev_init(c,n,strategy), dev_init(c,n,ioctl), \ 56 dev_init(c,n,dump), 0, B_TAPE } 57 58 #define bdev_swap_init() { \ 59 (dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \ 60 swstrategy, (dev_type_ioctl((*))) enodev, \ 61 (dev_type_dump((*))) enodev, 0, 0 } 62 63 #define bdev_notdef() bdev_tape_init(0,no) 64 bdev_decl(no); /* dummy declarations */ 65 66 #include "wd.h" 67 #include "fd.h" 68 #include "wt.h" 69 #include "xd.h" 70 71 bdev_decl(wd); 72 bdev_decl(Fd); 73 bdev_decl(wt); 74 bdev_decl(xd); 75 76 struct bdevsw bdevsw[] = 77 { 78 bdev_disk_init(NWD,wd), /* 0: st506/rll/esdi/ide disk */ 79 bdev_swap_init(), /* 1: swap pseudo-device */ 80 bdev_disk_init(NFD,Fd), /* 2: floppy disk */ 81 bdev_tape_init(NWT,wt), /* 3: QIC-24/60/120/150 cartridge tape */ 82 bdev_disk_init(NXD,xd), /* 4: temp alt st506/rll/esdi/ide disk */ 83 }; 84 85 int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); 86 87 /* cdevsw-specific types */ 88 #define dev_type_read(n) int n __P((dev_t, struct uio *, int)) 89 #define dev_type_write(n) int n __P((dev_t, struct uio *, int)) 90 #define dev_type_stop(n) int n __P((struct tty *, int)) 91 #define dev_type_reset(n) int n __P((int)) 92 #define dev_type_select(n) int n __P((dev_t, int, struct proc *)) 93 #define dev_type_map(n) int n __P(()) 94 95 #define cdev_decl(n) \ 96 dev_decl(n,open); dev_decl(n,close); dev_decl(n,read); \ 97 dev_decl(n,write); dev_decl(n,ioctl); dev_decl(n,stop); \ 98 dev_decl(n,reset); dev_decl(n,select); dev_decl(n,map); \ 99 dev_decl(n,strategy); extern struct tty __CONCAT(n,_tty)[] 100 101 #define dev_tty_init(c,n) (c > 0 ? __CONCAT(n,_tty) : 0) 102 103 /* open, read, write, ioctl, strategy */ 104 #define cdev_disk_init(c,n) { \ 105 dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \ 106 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 107 (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \ 108 dev_init(c,n,strategy) } 109 110 /* open, close, read, write, ioctl, strategy */ 111 #define cdev_tape_init(c,n) { \ 112 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 113 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 114 (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \ 115 dev_init(c,n,strategy) } 116 117 /* open, close, read, write, ioctl, stop, tty */ 118 #define cdev_tty_init(c,n) { \ 119 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 120 dev_init(c,n,write), dev_init(c,n,ioctl), dev_init(c,n,stop), \ 121 (dev_type_reset((*))) nullop, dev_tty_init(c,n), ttselect, \ 122 (dev_type_map((*))) enodev, 0 } 123 124 #define cdev_notdef() { \ 125 (dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \ 126 (dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \ 127 (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \ 128 (dev_type_reset((*))) nullop, 0, seltrue, \ 129 (dev_type_map((*))) enodev, 0 } 130 131 cdev_decl(no); /* dummy declarations */ 132 133 cdev_decl(cn); 134 /* open, close, read, write, ioctl, select -- XXX should be a tty */ 135 #define cdev_cn_init(c,n) { \ 136 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 137 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \ 138 (dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \ 139 (dev_type_map((*))) enodev, 0 } 140 141 cdev_decl(ctty); 142 /* open, read, write, ioctl, select -- XXX should be a tty */ 143 #define cdev_ctty_init(c,n) { \ 144 dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \ 145 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \ 146 (dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \ 147 (dev_type_map((*))) enodev, 0 } 148 149 dev_type_read(mmrw); 150 /* read/write */ 151 #define cdev_mm_init(c,n) { \ 152 (dev_type_open((*))) nullop, (dev_type_close((*))) nullop, mmrw, \ 153 mmrw, (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) nullop, \ 154 (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, 0 } 155 156 /* read, write, strategy */ 157 #define cdev_swap_init(c,n) { \ 158 (dev_type_open((*))) nullop, (dev_type_close((*))) nullop, rawread, \ 159 rawwrite, (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \ 160 (dev_type_reset((*))) nullop, 0, (dev_type_select((*))) enodev, \ 161 (dev_type_map((*))) enodev, dev_init(c,n,strategy) } 162 163 #include "pty.h" 164 #define pts_tty pt_tty 165 #define ptsioctl ptyioctl 166 cdev_decl(pts); 167 #define ptc_tty pt_tty 168 #define ptcioctl ptyioctl 169 cdev_decl(ptc); 170 171 /* open, close, read, write, ioctl, tty, select */ 172 #define cdev_ptc_init(c,n) { \ 173 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 174 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \ 175 (dev_type_reset((*))) nullop, dev_tty_init(c,n), dev_init(c,n,select), \ 176 (dev_type_map((*))) enodev, 0 } 177 178 cdev_decl(log); 179 /* open, close, read, ioctl, select -- XXX should be a generic device */ 180 #define cdev_log_init(c,n) { \ 181 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 182 (dev_type_write((*))) enodev, dev_init(c,n,ioctl), \ 183 (dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \ 184 dev_init(c,n,select), (dev_type_map((*))) enodev, 0 } 185 186 cdev_decl(wd); 187 cdev_decl(Fd); 188 cdev_decl(xd); 189 cdev_decl(wt); 190 191 #include "com.h" 192 193 cdev_decl(com); 194 195 #include "pc.h" 196 197 cdev_decl(pc); 198 199 /* open, close, read, write, ioctl, tty -- XXX should be a tty */ 200 extern struct tty pccons; 201 #define cdev_pc_init(c,n) { \ 202 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 203 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \ 204 (dev_type_reset((*))) nullop, &pccons, ttselect, \ 205 (dev_type_map((*))) enodev, 0 } 206 207 #include "bpfilter.h" 208 cdev_decl(bpf); 209 210 /* open, close, read, write, ioctl, select -- XXX should be generic device */ 211 #define cdev_bpf_init(c,n) { \ 212 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 213 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 214 (dev_type_reset((*))) enodev, 0, dev_init(c,n,select), \ 215 (dev_type_map((*))) enodev, 0 } 216 217 struct cdevsw cdevsw[] = 218 { 219 cdev_cn_init(1,cn), /* 0: virtual console */ 220 cdev_ctty_init(1,ctty), /* 1: controlling terminal */ 221 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */ 222 cdev_disk_init(NWD,wd), /* 3: st506/rll/esdi/ide disk */ 223 cdev_swap_init(1,sw), /* 4: /dev/drum (swap pseudo-device) */ 224 cdev_tty_init(NPTY,pts), /* 5: pseudo-tty slave */ 225 cdev_ptc_init(NPTY,ptc), /* 6: pseudo-tty master */ 226 cdev_log_init(1,log), /* 7: /dev/klog */ 227 cdev_tty_init(NCOM,com), /* 8: serial communications ports */ 228 cdev_disk_init(NFD,Fd), /* 9: floppy disk */ 229 cdev_tape_init(NWT,wt), /* 10: QIC-24/60/120/150 cartridge tape */ 230 cdev_disk_init(NXD,xd), /* 11: temp alt st506/rll/esdi/ide disk */ 231 cdev_pc_init(1,pc), /* 12: real console */ 232 cdev_notdef(), /* 13 */ 233 cdev_bpf_init(NBPFILTER,bpf), /* 14: berkeley packet filter */ 234 }; 235 236 int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); 237 238 int mem_no = 2; /* major device number of memory special file */ 239 240 /* 241 * Swapdev is a fake device implemented 242 * in sw.c used only internally to get to swstrategy. 243 * It cannot be provided to the users, because the 244 * swstrategy routine munches the b_dev and b_blkno entries 245 * before calling the appropriate driver. This would horribly 246 * confuse, e.g. the hashing routines. Instead, /dev/drum is 247 * provided as a character (raw) device. 248 */ 249 dev_t swapdev = makedev(1, 0); 250 251 /* 252 * Routine that identifies /dev/mem and /dev/kmem. 253 * 254 * A minimal stub routine can always return 0. 255 */ 256 iskmemdev(dev) 257 dev_t dev; 258 { 259 260 return (major(dev) == 2 && (minor(dev) == 0 || minor(dev) == 1)); 261 } 262 263 iszerodev(dev) 264 dev_t dev; 265 { 266 return (major(dev) == 2 && minor(dev) == 12); 267 } 268