1 /*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)conf.c 7.9 (Berkeley) 05/28/91 8 */ 9 10 #include "sys/param.h" 11 #include "sys/systm.h" 12 #include "sys/buf.h" 13 #include "sys/ioctl.h" 14 #include "sys/tty.h" 15 #include "sys/conf.h" 16 17 int rawread __P((dev_t, struct uio *, int)); 18 int rawwrite __P((dev_t, struct uio *, int)); 19 int swstrategy __P((struct buf *)); 20 int ttselect __P((dev_t, int, struct proc *)); 21 22 #define dev_type_open(n) int n __P((dev_t, int, int, struct proc *)) 23 #define dev_type_close(n) int n __P((dev_t, int, int, struct proc *)) 24 #define dev_type_strategy(n) int n __P((struct buf *)) 25 #define dev_type_ioctl(n) \ 26 int n __P((dev_t, int, caddr_t, int, struct proc *)) 27 28 /* bdevsw-specific types */ 29 #define dev_type_dump(n) int n __P((dev_t)) 30 #define dev_type_size(n) int n __P((dev_t)) 31 32 #define dev_decl(n,t) __CONCAT(dev_type_,t)(__CONCAT(n,t)) 33 #define dev_init(c,n,t) \ 34 (c > 0 ? __CONCAT(n,t) : (__CONCAT(dev_type_,t)((*))) enxio) 35 36 /* bdevsw-specific initializations */ 37 #define dev_size_init(c,n) (c > 0 ? __CONCAT(n,size) : 0) 38 39 #define bdev_decl(n) \ 40 dev_decl(n,open); dev_decl(n,close); dev_decl(n,strategy); \ 41 dev_decl(n,ioctl); dev_decl(n,dump); dev_decl(n,size) 42 43 #define bdev_disk_init(c,n) { \ 44 dev_init(c,n,open), (dev_type_close((*))) nullop, \ 45 dev_init(c,n,strategy), dev_init(c,n,ioctl), \ 46 dev_init(c,n,dump), dev_size_init(c,n), 0 } 47 48 #define bdev_tape_init(c,n) { \ 49 dev_init(c,n,open), dev_init(c,n,close), \ 50 dev_init(c,n,strategy), dev_init(c,n,ioctl), \ 51 dev_init(c,n,dump), 0, B_TAPE } 52 53 #define bdev_swap_init() { \ 54 (dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \ 55 swstrategy, (dev_type_ioctl((*))) enodev, \ 56 (dev_type_dump((*))) enodev, 0, 0 } 57 58 #define bdev_notdef() bdev_tape_init(0,no) 59 bdev_decl(no); /* dummy declarations */ 60 61 #include "ct.h" 62 #include "st.h" 63 #include "rd.h" 64 #include "sd.h" 65 #include "cd.h" 66 #include "vn.h" 67 68 bdev_decl(ct); 69 bdev_decl(st); 70 bdev_decl(rd); 71 bdev_decl(sd); 72 bdev_decl(cd); 73 bdev_decl(vn); 74 75 struct bdevsw bdevsw[] = 76 { 77 bdev_tape_init(NCT,ct), /* 0: cs80 cartridge tape */ 78 bdev_notdef(), /* 1 */ 79 bdev_disk_init(NRD,rd), /* 2: hpib disk */ 80 bdev_swap_init(), /* 3: swap pseudo-device */ 81 bdev_disk_init(NSD,sd), /* 4: scsi disk */ 82 bdev_disk_init(NCD,cd), /* 5: concatenated disk driver */ 83 bdev_disk_init(NVN,vn), /* 6: vnode disk driver (swap to files) */ 84 bdev_tape_init(NST,st), /* 7: exabyte tape */ 85 }; 86 87 int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); 88 89 /* cdevsw-specific types */ 90 #define dev_type_read(n) int n __P((dev_t, struct uio *, int)) 91 #define dev_type_write(n) int n __P((dev_t, struct uio *, int)) 92 #define dev_type_stop(n) int n __P((struct tty *, int)) 93 #define dev_type_reset(n) int n __P((int)) 94 #define dev_type_select(n) int n __P((dev_t, int, struct proc *)) 95 #define dev_type_map(n) int n __P(()) 96 97 #define cdev_decl(n) \ 98 dev_decl(n,open); dev_decl(n,close); dev_decl(n,read); \ 99 dev_decl(n,write); dev_decl(n,ioctl); dev_decl(n,stop); \ 100 dev_decl(n,reset); dev_decl(n,select); dev_decl(n,map); \ 101 dev_decl(n,strategy); extern struct tty __CONCAT(n,_tty)[] 102 103 #define dev_tty_init(c,n) (c > 0 ? __CONCAT(n,_tty) : 0) 104 105 /* open, read, write, ioctl, strategy */ 106 #define cdev_disk_init(c,n) { \ 107 dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \ 108 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 109 (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \ 110 dev_init(c,n,strategy) } 111 112 /* open, close, read, write, ioctl, strategy */ 113 #define cdev_tape_init(c,n) { \ 114 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 115 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 116 (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \ 117 dev_init(c,n,strategy) } 118 119 /* open, close, read, write, ioctl, stop, tty */ 120 #define cdev_tty_init(c,n) { \ 121 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 122 dev_init(c,n,write), dev_init(c,n,ioctl), dev_init(c,n,stop), \ 123 (dev_type_reset((*))) nullop, dev_tty_init(c,n), ttselect, \ 124 (dev_type_map((*))) enodev, 0 } 125 126 #define cdev_notdef() { \ 127 (dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \ 128 (dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \ 129 (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \ 130 (dev_type_reset((*))) nullop, 0, seltrue, \ 131 (dev_type_map((*))) enodev, 0 } 132 133 cdev_decl(no); /* dummy declarations */ 134 135 cdev_decl(cn); 136 /* open, close, read, write, ioctl, select -- XXX should be a tty */ 137 #define cdev_cn_init(c,n) { \ 138 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 139 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \ 140 (dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \ 141 (dev_type_map((*))) enodev, 0 } 142 143 cdev_decl(ctty); 144 /* open, read, write, ioctl, select -- XXX should be a tty */ 145 #define cdev_ctty_init(c,n) { \ 146 dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \ 147 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \ 148 (dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \ 149 (dev_type_map((*))) enodev, 0 } 150 151 dev_type_read(mmrw); 152 /* read/write */ 153 #define cdev_mm_init(c,n) { \ 154 (dev_type_open((*))) nullop, (dev_type_close((*))) nullop, mmrw, \ 155 mmrw, (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) nullop, \ 156 (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, 0 } 157 158 /* read, write, strategy */ 159 #define cdev_swap_init(c,n) { \ 160 (dev_type_open((*))) nullop, (dev_type_close((*))) nullop, rawread, \ 161 rawwrite, (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \ 162 (dev_type_reset((*))) nullop, 0, (dev_type_select((*))) enodev, \ 163 (dev_type_map((*))) enodev, dev_init(c,n,strategy) } 164 165 #include "pty.h" 166 #define pts_tty pt_tty 167 #define ptsioctl ptyioctl 168 cdev_decl(pts); 169 #define ptc_tty pt_tty 170 #define ptcioctl ptyioctl 171 cdev_decl(ptc); 172 173 /* open, close, read, write, ioctl, tty, select */ 174 #define cdev_ptc_init(c,n) { \ 175 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 176 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \ 177 (dev_type_reset((*))) nullop, dev_tty_init(c,n), dev_init(c,n,select), \ 178 (dev_type_map((*))) enodev, 0 } 179 180 cdev_decl(log); 181 /* open, close, read, ioctl, select -- XXX should be a generic device */ 182 #define cdev_log_init(c,n) { \ 183 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 184 (dev_type_write((*))) enodev, dev_init(c,n,ioctl), \ 185 (dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \ 186 dev_init(c,n,select), (dev_type_map((*))) enodev, 0 } 187 188 cdev_decl(ct); 189 cdev_decl(st); 190 cdev_decl(sd); 191 cdev_decl(rd); 192 193 /* XXX shouldn't this be optional? */ 194 cdev_decl(grf); 195 /* open, close, ioctl, select, map -- XXX should be a map device */ 196 #define cdev_grf_init(c,n) { \ 197 dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) nullop, \ 198 (dev_type_write((*))) nullop, dev_init(c,n,ioctl), \ 199 (dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \ 200 dev_init(c,n,select), dev_init(c,n,map), 0 } 201 202 #include "ppi.h" 203 cdev_decl(ppi); 204 /* open, close, read, write, ioctl -- XXX should be a generic device */ 205 #define cdev_ppi_init(c,n) { \ 206 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 207 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 208 (dev_type_reset((*))) nullop, 0, (dev_type_select((*))) enodev, \ 209 (dev_type_map((*))) enodev, 0 } 210 211 #include "dca.h" 212 cdev_decl(dca); 213 214 #include "ite.h" 215 cdev_decl(ite); 216 /* open, close, read, write, ioctl, tty -- XXX should be a tty! */ 217 #define cdev_ite_init(c,n) { \ 218 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 219 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 220 (dev_type_reset((*))) nullop, dev_tty_init(c,n), ttselect, \ 221 (dev_type_map((*))) enodev, 0 } 222 223 /* XXX shouldn't this be optional? */ 224 cdev_decl(hil); 225 /* open, close, read, ioctl, select, map -- XXX should be a map device */ 226 #define cdev_hil_init(c,n) { \ 227 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 228 (dev_type_write((*))) nullop, dev_init(c,n,ioctl), \ 229 (dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \ 230 dev_init(c,n,select), dev_init(c,n,map), 0 } 231 232 #include "dcm.h" 233 cdev_decl(dcm); 234 235 cdev_decl(cd); 236 237 #include "clock.h" 238 cdev_decl(clock); 239 /* open, close, ioctl, map -- XXX should be a map device */ 240 #define cdev_clock_init(c,n) { \ 241 dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) nullop, \ 242 (dev_type_write((*))) nullop, dev_init(c,n,ioctl), \ 243 (dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \ 244 (dev_type_select((*))) nullop, dev_init(c,n,map), 0 } 245 246 cdev_decl(vn); 247 /* open, read, write, ioctl -- XXX should be a disk */ 248 #define cdev_vn_init(c,n) { \ 249 dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \ 250 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 251 (dev_type_reset((*))) nullop, 0, seltrue, (dev_type_map((*))) enodev, \ 252 0 } 253 254 dev_type_open(fdopen); 255 /* open */ 256 #define cdev_fd_init(c,n) { \ 257 dev_init(c,n,open), (dev_type_close((*))) enodev, \ 258 (dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \ 259 (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \ 260 (dev_type_reset((*))) enodev, 0, (dev_type_select((*))) enodev, \ 261 (dev_type_map((*))) enodev, 0 } 262 263 #include "bpfilter.h" 264 cdev_decl(bpf); 265 /* open, close, read, write, ioctl, select -- XXX should be generic device */ 266 #define cdev_bpf_init(c,n) { \ 267 dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \ 268 dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \ 269 (dev_type_reset((*))) enodev, 0, dev_init(c,n,select), \ 270 (dev_type_map((*))) enodev, 0 } 271 272 struct cdevsw cdevsw[] = 273 { 274 cdev_cn_init(1,cn), /* 0: virtual console */ 275 cdev_ctty_init(1,ctty), /* 1: controlling terminal */ 276 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */ 277 cdev_swap_init(1,sw), /* 3: /dev/drum (swap pseudo-device) */ 278 cdev_tty_init(NPTY,pts), /* 4: pseudo-tty slave */ 279 cdev_ptc_init(NPTY,ptc), /* 5: pseudo-tty master */ 280 cdev_log_init(1,log), /* 6: /dev/klog */ 281 cdev_tape_init(NCT,ct), /* 7: cs80 cartridge tape */ 282 cdev_disk_init(NSD,sd), /* 8: scsi disk */ 283 cdev_disk_init(NSD,rd), /* 9: hpib disk */ 284 cdev_grf_init(1,grf), /* 10: frame buffer */ 285 cdev_ppi_init(NPPI,ppi), /* 11: printer/plotter interface */ 286 cdev_tty_init(NDCA,dca), /* 12: built-in single-port serial */ 287 cdev_ite_init(NITE,ite), /* 13: console terminal emulator */ 288 cdev_hil_init(1,hil), /* 14: human interface loop */ 289 cdev_tty_init(NDCM,dcm), /* 15: 4-port serial */ 290 cdev_notdef(), /* 16 */ 291 cdev_disk_init(NCD,cd), /* 17: concatenated disk */ 292 cdev_clock_init(NCLOCK,clock), /* 18: mapped clock */ 293 cdev_vn_init(NVN,vn), /* 19: vnode disk */ 294 cdev_tape_init(NST,st), /* 20: exabyte tape */ 295 cdev_fd_init(1,fd), /* 21: file descriptor pseudo-dev */ 296 cdev_bpf_init(NBPFILTER,bpf), /* 22: berkeley packet filter */ 297 }; 298 299 int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); 300 301 int mem_no = 2; /* major device number of memory special file */ 302 303 /* 304 * Swapdev is a fake device implemented 305 * in sw.c used only internally to get to swstrategy. 306 * It cannot be provided to the users, because the 307 * swstrategy routine munches the b_dev and b_blkno entries 308 * before calling the appropriate driver. This would horribly 309 * confuse, e.g. the hashing routines. Instead, /dev/drum is 310 * provided as a character (raw) device. 311 */ 312 dev_t swapdev = makedev(3, 0); 313