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