1 /* $NetBSD: conf.h,v 1.144 2012/10/27 17:18:40 chs 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_flag; 78 }; 79 80 /* 81 * Character device switch table 82 */ 83 struct cdevsw { 84 int (*d_open)(dev_t, int, int, struct lwp *); 85 int (*d_close)(dev_t, int, int, struct lwp *); 86 int (*d_read)(dev_t, struct uio *, int); 87 int (*d_write)(dev_t, struct uio *, int); 88 int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *); 89 void (*d_stop)(struct tty *, int); 90 struct tty * (*d_tty)(dev_t); 91 int (*d_poll)(dev_t, int, struct lwp *); 92 paddr_t (*d_mmap)(dev_t, off_t, int); 93 int (*d_kqfilter)(dev_t, struct knote *); 94 int d_flag; 95 }; 96 97 #ifdef _KERNEL 98 99 #include <sys/mutex.h> 100 extern kmutex_t device_lock; 101 102 int devsw_attach(const char *, const struct bdevsw *, devmajor_t *, 103 const struct cdevsw *, devmajor_t *); 104 int devsw_detach(const struct bdevsw *, const struct cdevsw *); 105 const struct bdevsw *bdevsw_lookup(dev_t); 106 const struct cdevsw *cdevsw_lookup(dev_t); 107 devmajor_t bdevsw_lookup_major(const struct bdevsw *); 108 devmajor_t cdevsw_lookup_major(const struct cdevsw *); 109 110 #define dev_type_open(n) int n (dev_t, int, int, struct lwp *) 111 #define dev_type_close(n) int n (dev_t, int, int, struct lwp *) 112 #define dev_type_read(n) int n (dev_t, struct uio *, int) 113 #define dev_type_write(n) int n (dev_t, struct uio *, int) 114 #define dev_type_ioctl(n) \ 115 int n (dev_t, u_long, void *, int, struct lwp *) 116 #define dev_type_stop(n) void n (struct tty *, int) 117 #define dev_type_tty(n) struct tty * n (dev_t) 118 #define dev_type_poll(n) int n (dev_t, int, struct lwp *) 119 #define dev_type_mmap(n) paddr_t n (dev_t, off_t, int) 120 #define dev_type_strategy(n) void n (struct buf *) 121 #define dev_type_dump(n) int n (dev_t, daddr_t, void *, size_t) 122 #define dev_type_size(n) int n (dev_t) 123 #define dev_type_kqfilter(n) int n (dev_t, struct knote *) 124 125 #define noopen ((dev_type_open((*)))enodev) 126 #define noclose ((dev_type_close((*)))enodev) 127 #define noread ((dev_type_read((*)))enodev) 128 #define nowrite ((dev_type_write((*)))enodev) 129 #define noioctl ((dev_type_ioctl((*)))enodev) 130 #define nostop ((dev_type_stop((*)))enodev) 131 #define notty NULL 132 #define nopoll seltrue 133 #define nommap ((dev_type_mmap((*)))enodev) 134 #define nodump ((dev_type_dump((*)))enodev) 135 #define nosize NULL 136 #define nokqfilter seltrue_kqfilter 137 138 #define nullopen ((dev_type_open((*)))nullop) 139 #define nullclose ((dev_type_close((*)))nullop) 140 #define nullread ((dev_type_read((*)))nullop) 141 #define nullwrite ((dev_type_write((*)))nullop) 142 #define nullioctl ((dev_type_ioctl((*)))nullop) 143 #define nullstop ((dev_type_stop((*)))nullop) 144 #define nullpoll ((dev_type_poll((*)))nullop) 145 #define nullmmap ((dev_type_mmap((*)))nullop) 146 #define nulldump ((dev_type_dump((*)))nullop) 147 #define nullkqfilter ((dev_type_kqfilter((*)))eopnotsupp) 148 149 /* device access wrappers. */ 150 151 dev_type_open(bdev_open); 152 dev_type_close(bdev_close); 153 dev_type_strategy(bdev_strategy); 154 dev_type_ioctl(bdev_ioctl); 155 dev_type_dump(bdev_dump); 156 dev_type_size(bdev_size); 157 158 dev_type_open(cdev_open); 159 dev_type_close(cdev_close); 160 dev_type_read(cdev_read); 161 dev_type_write(cdev_write); 162 dev_type_ioctl(cdev_ioctl); 163 dev_type_stop(cdev_stop); 164 dev_type_tty(cdev_tty); 165 dev_type_poll(cdev_poll); 166 dev_type_mmap(cdev_mmap); 167 dev_type_kqfilter(cdev_kqfilter); 168 169 int cdev_type(dev_t); 170 int bdev_type(dev_t); 171 172 /* symbolic sleep message strings */ 173 extern const char devopn[], devio[], devwait[], devin[], devout[]; 174 extern const char devioc[], devcls[]; 175 176 #endif /* _KERNEL */ 177 178 /* 179 * Line discipline switch table 180 */ 181 struct linesw { 182 const char *l_name; /* Linesw name */ 183 184 LIST_ENTRY(linesw) l_list; 185 u_int l_refcnt; /* locked by ttyldisc_list_slock */ 186 int l_no; /* legacy discipline number (for TIOCGETD) */ 187 188 int (*l_open) (dev_t, struct tty *); 189 int (*l_close) (struct tty *, int); 190 int (*l_read) (struct tty *, struct uio *, int); 191 int (*l_write) (struct tty *, struct uio *, int); 192 int (*l_ioctl) (struct tty *, u_long, void *, int, 193 struct lwp *); 194 int (*l_rint) (int, struct tty *); 195 int (*l_start) (struct tty *); 196 int (*l_modem) (struct tty *, int); 197 int (*l_poll) (struct tty *, int, struct lwp *); 198 }; 199 200 #ifdef _KERNEL 201 void ttyldisc_init(void); 202 int ttyldisc_attach(struct linesw *); 203 int ttyldisc_detach(struct linesw *); 204 struct linesw *ttyldisc_lookup(const char *); 205 struct linesw *ttyldisc_lookup_bynum(int); 206 struct linesw *ttyldisc_default(void); 207 void ttyldisc_release(struct linesw *); 208 209 /* For those defining their own line disciplines: */ 210 #define ttynodisc ((int (*)(dev_t, struct tty *))enodev) 211 #define ttyerrclose ((int (*)(struct tty *, int))enodev) 212 #define ttyerrio ((int (*)(struct tty *, struct uio *, int))enodev) 213 #define ttyerrinput ((int (*)(int, struct tty *))enodev) 214 #define ttyerrstart ((int (*)(struct tty *))enodev) 215 216 int ttyerrpoll (struct tty *, int, struct lwp *); 217 int ttynullioctl(struct tty *, u_long, void *, int, struct lwp *); 218 219 int iskmemdev(dev_t); 220 int seltrue_kqfilter(dev_t, struct knote *); 221 #endif 222 223 #ifdef _KERNEL 224 225 #define DEV_MEM 0 /* minor device 0 is physical memory */ 226 #define DEV_KMEM 1 /* minor device 1 is kernel memory */ 227 #define DEV_NULL 2 /* minor device 2 is EOF/rathole */ 228 #ifdef COMPAT_16 229 #define _DEV_ZERO_oARM 3 /* reserved: old ARM /dev/zero minor */ 230 #endif 231 #define DEV_ZERO 12 /* minor device 12 is '\0'/rathole */ 232 233 enum devnode_class { 234 DEVNODE_DONTBOTHER, 235 DEVNODE_SINGLE, 236 DEVNODE_VECTOR, 237 }; 238 #define DEVNODE_FLAG_LINKZERO 0x01 /* create name -> name0 link */ 239 #define DEVNODE_FLAG_ISMINOR0 0x02 /* vector[0] specifies minor */ 240 #ifdef notyet 241 #define DEVNODE_FLAG_ISMINOR1 0x04 /* vector[1] specifies starting minor */ 242 #endif 243 244 struct devsw_conv { 245 const char *d_name; 246 devmajor_t d_bmajor; 247 devmajor_t d_cmajor; 248 249 /* information about /dev nodes related to the device */ 250 enum devnode_class d_class; 251 int d_flags; 252 int d_vectdim[2]; 253 }; 254 255 void devsw_init(void); 256 const char *devsw_blk2name(devmajor_t); 257 const char *cdevsw_getname(devmajor_t); 258 const char *bdevsw_getname(devmajor_t); 259 devmajor_t devsw_name2blk(const char *, char *, size_t); 260 devmajor_t devsw_name2chr(const char *, char *, size_t); 261 dev_t devsw_chr2blk(dev_t); 262 dev_t devsw_blk2chr(dev_t); 263 264 void mm_init(void); 265 #endif /* _KERNEL */ 266 267 #ifdef _KERNEL 268 void setroot(device_t, int); 269 void rootconf(void); 270 void swapconf(void); 271 #endif /* _KERNEL */ 272 273 #endif /* !_SYS_CONF_H_ */ 274