| 1 | /* $NetBSD: conf.h,v 1.146 2016/01/17 23:16:46 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1990, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * (c) UNIX System Laboratories, Inc. |
| 7 | * All or some portions of this file are derived from material licensed |
| 8 | * to the University of California by American Telephone and Telegraph |
| 9 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
| 10 | * the permission of UNIX System Laboratories, Inc. |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer. |
| 17 | * 2. Redistributions in binary form must reproduce the above copyright |
| 18 | * notice, this list of conditions and the following disclaimer in the |
| 19 | * documentation and/or other materials provided with the distribution. |
| 20 | * 3. Neither the name of the University nor the names of its contributors |
| 21 | * may be used to endorse or promote products derived from this software |
| 22 | * without specific prior written permission. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 34 | * SUCH DAMAGE. |
| 35 | * |
| 36 | * @(#)conf.h 8.5 (Berkeley) 1/9/95 |
| 37 | */ |
| 38 | |
| 39 | #ifndef _SYS_CONF_H_ |
| 40 | #define _SYS_CONF_H_ |
| 41 | |
| 42 | /* |
| 43 | * Definitions of device driver entry switches |
| 44 | */ |
| 45 | |
| 46 | #include <sys/queue.h> |
| 47 | #include <sys/device_if.h> |
| 48 | |
| 49 | struct buf; |
| 50 | struct knote; |
| 51 | struct lwp; |
| 52 | struct tty; |
| 53 | struct uio; |
| 54 | struct vnode; |
| 55 | |
| 56 | /* |
| 57 | * Types for d_flag |
| 58 | */ |
| 59 | #define D_OTHER 0x0000 |
| 60 | #define D_TAPE 0x0001 |
| 61 | #define D_DISK 0x0002 |
| 62 | #define D_TTY 0x0003 |
| 63 | #define D_TYPEMASK 0x00ff |
| 64 | #define D_MPSAFE 0x0100 |
| 65 | #define D_NEGOFFSAFE 0x0200 |
| 66 | |
| 67 | /* |
| 68 | * Block device switch table |
| 69 | */ |
| 70 | struct bdevsw { |
| 71 | int (*d_open)(dev_t, int, int, struct lwp *); |
| 72 | int (*d_close)(dev_t, int, int, struct lwp *); |
| 73 | void (*d_strategy)(struct buf *); |
| 74 | int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *); |
| 75 | int (*d_dump)(dev_t, daddr_t, void *, size_t); |
| 76 | int (*d_psize)(dev_t); |
| 77 | int (*d_discard)(dev_t, off_t, off_t); |
| 78 | int d_flag; |
| 79 | }; |
| 80 | |
| 81 | /* |
| 82 | * Character device switch table |
| 83 | */ |
| 84 | struct cdevsw { |
| 85 | int (*d_open)(dev_t, int, int, struct lwp *); |
| 86 | int (*d_close)(dev_t, int, int, struct lwp *); |
| 87 | int (*d_read)(dev_t, struct uio *, int); |
| 88 | int (*d_write)(dev_t, struct uio *, int); |
| 89 | int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *); |
| 90 | void (*d_stop)(struct tty *, int); |
| 91 | struct tty * (*d_tty)(dev_t); |
| 92 | int (*d_poll)(dev_t, int, struct lwp *); |
| 93 | paddr_t (*d_mmap)(dev_t, off_t, int); |
| 94 | int (*d_kqfilter)(dev_t, struct knote *); |
| 95 | int (*d_discard)(dev_t, off_t, off_t); |
| 96 | int d_flag; |
| 97 | }; |
| 98 | |
| 99 | #ifdef _KERNEL |
| 100 | |
| 101 | #include <sys/mutex.h> |
| 102 | extern kmutex_t device_lock; |
| 103 | |
| 104 | int devsw_attach(const char *, const struct bdevsw *, devmajor_t *, |
| 105 | const struct cdevsw *, devmajor_t *); |
| 106 | int devsw_detach(const struct bdevsw *, const struct cdevsw *); |
| 107 | const struct bdevsw *bdevsw_lookup(dev_t); |
| 108 | const struct cdevsw *cdevsw_lookup(dev_t); |
| 109 | devmajor_t bdevsw_lookup_major(const struct bdevsw *); |
| 110 | devmajor_t cdevsw_lookup_major(const struct cdevsw *); |
| 111 | |
| 112 | #define dev_type_open(n) int n (dev_t, int, int, struct lwp *) |
| 113 | #define dev_type_close(n) int n (dev_t, int, int, struct lwp *) |
| 114 | #define dev_type_read(n) int n (dev_t, struct uio *, int) |
| 115 | #define dev_type_write(n) int n (dev_t, struct uio *, int) |
| 116 | #define dev_type_ioctl(n) \ |
| 117 | int n (dev_t, u_long, void *, int, struct lwp *) |
| 118 | #define dev_type_stop(n) void n (struct tty *, int) |
| 119 | #define dev_type_tty(n) struct tty * n (dev_t) |
| 120 | #define dev_type_poll(n) int n (dev_t, int, struct lwp *) |
| 121 | #define dev_type_mmap(n) paddr_t n (dev_t, off_t, int) |
| 122 | #define dev_type_strategy(n) void n (struct buf *) |
| 123 | #define dev_type_dump(n) int n (dev_t, daddr_t, void *, size_t) |
| 124 | #define dev_type_size(n) int n (dev_t) |
| 125 | #define dev_type_kqfilter(n) int n (dev_t, struct knote *) |
| 126 | #define dev_type_discard(n) int n (dev_t, off_t, off_t) |
| 127 | |
| 128 | #define noopen ((dev_type_open((*)))enodev) |
| 129 | #define noclose ((dev_type_close((*)))enodev) |
| 130 | #define noread ((dev_type_read((*)))enodev) |
| 131 | #define nowrite ((dev_type_write((*)))enodev) |
| 132 | #define noioctl ((dev_type_ioctl((*)))enodev) |
| 133 | #define nostop ((dev_type_stop((*)))enodev) |
| 134 | #define notty NULL |
| 135 | #define nopoll seltrue |
| 136 | #define nommap ((dev_type_mmap((*)))enodev) |
| 137 | #define nodump ((dev_type_dump((*)))enodev) |
| 138 | #define nosize NULL |
| 139 | #define nokqfilter seltrue_kqfilter |
| 140 | #define nodiscard ((dev_type_discard((*)))enodev) |
| 141 | |
| 142 | #define nullopen ((dev_type_open((*)))nullop) |
| 143 | #define nullclose ((dev_type_close((*)))nullop) |
| 144 | #define nullread ((dev_type_read((*)))nullop) |
| 145 | #define nullwrite ((dev_type_write((*)))nullop) |
| 146 | #define nullioctl ((dev_type_ioctl((*)))nullop) |
| 147 | #define nullstop ((dev_type_stop((*)))nullop) |
| 148 | #define nullpoll ((dev_type_poll((*)))nullop) |
| 149 | #define nullmmap ((dev_type_mmap((*)))nullop) |
| 150 | #define nulldump ((dev_type_dump((*)))nullop) |
| 151 | #define nullkqfilter ((dev_type_kqfilter((*)))eopnotsupp) |
| 152 | #define nulldiscard ((dev_type_discard((*)))nullop) |
| 153 | |
| 154 | /* device access wrappers. */ |
| 155 | |
| 156 | dev_type_open(bdev_open); |
| 157 | dev_type_close(bdev_close); |
| 158 | dev_type_strategy(bdev_strategy); |
| 159 | dev_type_ioctl(bdev_ioctl); |
| 160 | dev_type_dump(bdev_dump); |
| 161 | dev_type_size(bdev_size); |
| 162 | dev_type_discard(bdev_discard); |
| 163 | |
| 164 | dev_type_open(cdev_open); |
| 165 | dev_type_close(cdev_close); |
| 166 | dev_type_read(cdev_read); |
| 167 | dev_type_write(cdev_write); |
| 168 | dev_type_ioctl(cdev_ioctl); |
| 169 | dev_type_stop(cdev_stop); |
| 170 | dev_type_tty(cdev_tty); |
| 171 | dev_type_poll(cdev_poll); |
| 172 | dev_type_mmap(cdev_mmap); |
| 173 | dev_type_kqfilter(cdev_kqfilter); |
| 174 | dev_type_discard(cdev_discard); |
| 175 | |
| 176 | int cdev_type(dev_t); |
| 177 | int bdev_type(dev_t); |
| 178 | |
| 179 | /* symbolic sleep message strings */ |
| 180 | extern const char devopn[], devio[], devwait[], devin[], devout[]; |
| 181 | extern const char devioc[], devcls[]; |
| 182 | |
| 183 | #endif /* _KERNEL */ |
| 184 | |
| 185 | /* |
| 186 | * Line discipline switch table |
| 187 | */ |
| 188 | struct linesw { |
| 189 | const char *l_name; /* Linesw name */ |
| 190 | |
| 191 | LIST_ENTRY(linesw) l_list; |
| 192 | u_int l_refcnt; /* locked by ttyldisc_list_slock */ |
| 193 | int l_no; /* legacy discipline number (for TIOCGETD) */ |
| 194 | |
| 195 | int (*l_open) (dev_t, struct tty *); |
| 196 | int (*l_close) (struct tty *, int); |
| 197 | int (*l_read) (struct tty *, struct uio *, int); |
| 198 | int (*l_write) (struct tty *, struct uio *, int); |
| 199 | int (*l_ioctl) (struct tty *, u_long, void *, int, |
| 200 | struct lwp *); |
| 201 | int (*l_rint) (int, struct tty *); |
| 202 | int (*l_start) (struct tty *); |
| 203 | int (*l_modem) (struct tty *, int); |
| 204 | int (*l_poll) (struct tty *, int, struct lwp *); |
| 205 | }; |
| 206 | |
| 207 | #ifdef _KERNEL |
| 208 | void ttyldisc_init(void); |
| 209 | int ttyldisc_attach(struct linesw *); |
| 210 | int ttyldisc_detach(struct linesw *); |
| 211 | struct linesw *ttyldisc_lookup(const char *); |
| 212 | struct linesw *ttyldisc_lookup_bynum(int); |
| 213 | struct linesw *ttyldisc_default(void); |
| 214 | void ttyldisc_release(struct linesw *); |
| 215 | |
| 216 | /* For those defining their own line disciplines: */ |
| 217 | #define ttynodisc ((int (*)(dev_t, struct tty *))enodev) |
| 218 | #define ttyerrclose ((int (*)(struct tty *, int))enodev) |
| 219 | #define ttyerrio ((int (*)(struct tty *, struct uio *, int))enodev) |
| 220 | #define ttyerrinput ((int (*)(int, struct tty *))enodev) |
| 221 | #define ttyerrstart ((int (*)(struct tty *))enodev) |
| 222 | |
| 223 | int ttyerrpoll (struct tty *, int, struct lwp *); |
| 224 | int ttynullioctl(struct tty *, u_long, void *, int, struct lwp *); |
| 225 | |
| 226 | int iskmemdev(dev_t); |
| 227 | int seltrue_kqfilter(dev_t, struct knote *); |
| 228 | #endif |
| 229 | |
| 230 | #ifdef _KERNEL |
| 231 | |
| 232 | #define DEV_MEM 0 /* minor device 0 is physical memory */ |
| 233 | #define DEV_KMEM 1 /* minor device 1 is kernel memory */ |
| 234 | #define DEV_NULL 2 /* minor device 2 is EOF/rathole */ |
| 235 | #ifdef COMPAT_16 |
| 236 | #define _DEV_ZERO_oARM 3 /* reserved: old ARM /dev/zero minor */ |
| 237 | #endif |
| 238 | #define DEV_FULL 11 /* minor device 11 is '\0'/ENOSPC */ |
| 239 | #define DEV_ZERO 12 /* minor device 12 is '\0'/rathole */ |
| 240 | |
| 241 | enum devnode_class { |
| 242 | DEVNODE_DONTBOTHER, |
| 243 | DEVNODE_SINGLE, |
| 244 | DEVNODE_VECTOR, |
| 245 | }; |
| 246 | #define DEVNODE_FLAG_LINKZERO 0x01 /* create name -> name0 link */ |
| 247 | #define DEVNODE_FLAG_ISMINOR0 0x02 /* vector[0] specifies minor */ |
| 248 | #ifdef notyet |
| 249 | #define DEVNODE_FLAG_ISMINOR1 0x04 /* vector[1] specifies starting minor */ |
| 250 | #endif |
| 251 | |
| 252 | struct devsw_conv { |
| 253 | const char *d_name; |
| 254 | devmajor_t d_bmajor; |
| 255 | devmajor_t d_cmajor; |
| 256 | |
| 257 | /* information about /dev nodes related to the device */ |
| 258 | enum devnode_class d_class; |
| 259 | int d_flags; |
| 260 | int d_vectdim[2]; |
| 261 | }; |
| 262 | |
| 263 | void devsw_init(void); |
| 264 | const char *devsw_blk2name(devmajor_t); |
| 265 | const char *cdevsw_getname(devmajor_t); |
| 266 | const char *bdevsw_getname(devmajor_t); |
| 267 | devmajor_t devsw_name2blk(const char *, char *, size_t); |
| 268 | devmajor_t devsw_name2chr(const char *, char *, size_t); |
| 269 | dev_t devsw_chr2blk(dev_t); |
| 270 | dev_t devsw_blk2chr(dev_t); |
| 271 | |
| 272 | void mm_init(void); |
| 273 | #endif /* _KERNEL */ |
| 274 | |
| 275 | #ifdef _KERNEL |
| 276 | void setroot(device_t, int); |
| 277 | void rootconf(void); |
| 278 | void swapconf(void); |
| 279 | #endif /* _KERNEL */ |
| 280 | |
| 281 | #endif /* !_SYS_CONF_H_ */ |
| 282 | |