1/* $NetBSD: conf.h,v 1.162 2024/04/17 18:01:29 riastradh 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/device_if.h> 47#include <sys/queue.h> 48#include <sys/types.h> 49 50struct buf; 51struct knote; 52struct lwp; 53struct tty; 54struct uio; 55struct vnode; 56 57/* 58 * Types for d_flag 59 */ 60#define D_OTHER 0x0000 61#define D_TAPE 0x0001 62#define D_DISK 0x0002 63#define D_TTY 0x0003 64#define D_TYPEMASK 0x00ff 65#define D_MPSAFE 0x0100 66#define D_NEGOFFSAFE 0x0200 67#define D_UNUSED0 0x0400 /* was D_MCLOSE */ 68 69/* 70 * Block device switch table 71 */ 72struct bdevsw { 73 int (*d_open)(dev_t, int, int, struct lwp *); 74 int (*d_cancel)(dev_t, int, int, struct lwp *); 75 int (*d_close)(dev_t, int, int, struct lwp *); 76 void (*d_strategy)(struct buf *); 77 int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *); 78 int (*d_dump)(dev_t, daddr_t, void *, size_t); 79 int (*d_psize)(dev_t); 80 int (*d_discard)(dev_t, off_t, off_t); 81 int (*d_devtounit)(dev_t); 82 struct cfdriver *d_cfdriver; 83 int d_flag; 84}; 85 86/* 87 * Character device switch table 88 */ 89struct cdevsw { 90 int (*d_open)(dev_t, int, int, struct lwp *); 91 int (*d_cancel)(dev_t, int, int, struct lwp *); 92 int (*d_close)(dev_t, int, int, struct lwp *); 93 int (*d_read)(dev_t, struct uio *, int); 94 int (*d_write)(dev_t, struct uio *, int); 95 int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *); 96 void (*d_stop)(struct tty *, int); 97 struct tty * (*d_tty)(dev_t); 98 int (*d_poll)(dev_t, int, struct lwp *); 99 paddr_t (*d_mmap)(dev_t, off_t, int); 100 int (*d_kqfilter)(dev_t, struct knote *); 101 int (*d_discard)(dev_t, off_t, off_t); 102 int (*d_devtounit)(dev_t); 103 struct cfdriver *d_cfdriver; 104 int d_flag; 105}; 106 107#ifdef _KERNEL 108 109#include <sys/mutex.h> 110extern kmutex_t device_lock; 111 112int devsw_attach(const char *, const struct bdevsw *, devmajor_t *, 113 const struct cdevsw *, devmajor_t *); 114void devsw_detach(const struct bdevsw *, const struct cdevsw *); 115const struct bdevsw *bdevsw_lookup(dev_t); 116const struct cdevsw *cdevsw_lookup(dev_t); 117devmajor_t bdevsw_lookup_major(const struct bdevsw *); 118devmajor_t cdevsw_lookup_major(const struct cdevsw *); 119 120typedef int dev_open_t(dev_t, int, int, struct lwp *); 121typedef int dev_cancel_t(dev_t, int, int, struct lwp *); 122typedef int dev_close_t(dev_t, int, int, struct lwp *); 123typedef int dev_read_t(dev_t, struct uio *, int); 124typedef int dev_write_t(dev_t, struct uio *, int); 125typedef int dev_ioctl_t(dev_t, u_long, void *, int, struct lwp *); 126typedef void dev_stop_t(struct tty *, int); 127typedef struct tty *dev_tty_t(dev_t); 128typedef int dev_poll_t(dev_t, int, struct lwp *); 129typedef paddr_t dev_mmap_t(dev_t, off_t, int); 130typedef void dev_strategy_t(struct buf *); 131typedef int dev_dump_t(dev_t, daddr_t, void *, size_t); 132typedef int dev_size_t(dev_t); 133typedef int dev_kqfilter_t(dev_t, struct knote *); 134typedef int dev_discard_t(dev_t, off_t, off_t); 135 136#define dev_type_open(n) dev_open_t n 137#define dev_type_cancel(n) dev_cancel_t n 138#define dev_type_close(n) dev_close_t n 139#define dev_type_read(n) dev_read_t n 140#define dev_type_write(n) dev_write_t n 141#define dev_type_ioctl(n) dev_ioctl_t n 142#define dev_type_stop(n) dev_stop_t n 143#define dev_type_tty(n) dev_tty_t n 144#define dev_type_poll(n) dev_poll_t n 145#define dev_type_mmap(n) dev_mmap_t n 146#define dev_type_strategy(n) dev_strategy_t n 147#define dev_type_dump(n) dev_dump_t n 148#define dev_type_size(n) dev_size_t n 149#define dev_type_kqfilter(n) dev_kqfilter_t n 150#define dev_type_discard(n) dev_discard_t n 151 152int devenodev(dev_t, ...); 153int deveopnotsupp(dev_t, ...); 154int devnullop(dev_t, ...); 155int ttyenodev(struct tty *, ...); 156void ttyvenodev(struct tty *, ...); 157void ttyvnullop(struct tty *, ...); 158 159#define noopen ((dev_open_t *)devenodev) 160#define noclose ((dev_close_t *)devenodev) 161#define noread ((dev_read_t *)devenodev) 162#define nowrite ((dev_write_t *)devenodev) 163#define noioctl ((dev_ioctl_t *)devenodev) 164#define nostop ((dev_stop_t *)ttyvenodev) 165#define notty NULL 166#define nopoll seltrue 167paddr_t nommap(dev_t, off_t, int); 168#define nodump ((dev_dump_t *)devenodev) 169#define nosize NULL 170#define nokqfilter seltrue_kqfilter 171#define nodiscard ((dev_discard_t *)devenodev) 172 173#define nullopen ((dev_open_t *)devnullop) 174#define nullclose ((dev_close_t *)devnullop) 175#define nullread ((dev_read_t *)devnullop) 176#define nullwrite ((dev_write_t *)devnullop) 177#define nullioctl ((dev_ioctl_t *)devnullop) 178#define nullstop ((dev_stop_t *)ttyvnullop) 179#define nullpoll ((dev_poll_t *)devnullop) 180#define nulldump ((dev_dump_t *)devnullop) 181#define nullkqfilter ((dev_kqfilter_t *)deveopnotsupp) 182#define nulldiscard ((dev_discard_t *)devnullop) 183 184/* device access wrappers. */ 185 186dev_type_open(bdev_open); 187dev_type_cancel(bdev_cancel); 188dev_type_close(bdev_close); 189dev_type_strategy(bdev_strategy); 190dev_type_ioctl(bdev_ioctl); 191dev_type_dump(bdev_dump); 192dev_type_size(bdev_size); 193dev_type_discard(bdev_discard); 194 195void bdev_detached(dev_t); 196 197dev_type_open(cdev_open); 198dev_type_cancel(cdev_cancel); 199dev_type_close(cdev_close); 200dev_type_read(cdev_read); 201dev_type_write(cdev_write); 202dev_type_ioctl(cdev_ioctl); 203dev_type_stop(cdev_stop); 204dev_type_tty(cdev_tty); 205dev_type_poll(cdev_poll); 206dev_type_mmap(cdev_mmap); 207dev_type_kqfilter(cdev_kqfilter); 208dev_type_discard(cdev_discard); 209 210void cdev_detached(dev_t); 211 212int cdev_type(dev_t); 213int cdev_flags(dev_t); 214int bdev_type(dev_t); 215int bdev_flags(dev_t); 216 217/* symbolic sleep message strings */ 218extern const char devopn[], devio[], devwait[], devin[], devout[]; 219extern const char devioc[], devcls[]; 220 221#endif /* _KERNEL */ 222 223/* 224 * Line discipline switch table 225 */ 226struct linesw { 227 const char *l_name; /* Linesw name */ 228 229 LIST_ENTRY(linesw) l_list; 230 u_int l_refcnt; /* locked by ttyldisc_list_slock */ 231 int l_no; /* legacy discipline number (for TIOCGETD) */ 232 233 int (*l_open) (dev_t, struct tty *); 234 int (*l_close) (struct tty *, int); 235 int (*l_read) (struct tty *, struct uio *, int); 236 int (*l_write) (struct tty *, struct uio *, int); 237 int (*l_ioctl) (struct tty *, u_long, void *, int, 238 struct lwp *); 239 int (*l_rint) (int, struct tty *); 240 int (*l_start) (struct tty *); 241 int (*l_modem) (struct tty *, int); 242 int (*l_poll) (struct tty *, int, struct lwp *); 243}; 244 245#ifdef _KERNEL 246void ttyldisc_init(void); 247int ttyldisc_attach(struct linesw *); 248int ttyldisc_detach(struct linesw *); 249struct linesw *ttyldisc_lookup(const char *); 250struct linesw *ttyldisc_lookup_bynum(int); 251struct linesw *ttyldisc_default(void); 252void ttyldisc_release(struct linesw *); 253 254/* For those defining their own line disciplines: */ 255#define ttynodisc ((int (*)(dev_t, struct tty *))devenodev) 256#define ttyerrclose ((int (*)(struct tty *, int))ttyenodev) 257#define ttyerrio ((int (*)(struct tty *, struct uio *, int))ttyenodev) 258#define ttyerrstart ((int (*)(struct tty *))ttyenodev) 259 260int ttyerrpoll (struct tty *, int, struct lwp *); 261int ttynullioctl(struct tty *, u_long, void *, int, struct lwp *); 262 263int iskmemdev(dev_t); 264int seltrue_kqfilter(dev_t, struct knote *); 265#endif 266 267#ifdef _KERNEL 268 269#define DEV_MEM 0 /* minor device 0 is physical memory */ 270#define DEV_KMEM 1 /* minor device 1 is kernel memory */ 271#define DEV_NULL 2 /* minor device 2 is EOF/rathole */ 272#ifdef COMPAT_16 273#define _DEV_ZERO_oARM 3 /* reserved: old ARM /dev/zero minor */ 274#endif 275#define DEV_FULL 11 /* minor device 11 is '\0'/ENOSPC */ 276#define DEV_ZERO 12 /* minor device 12 is '\0'/rathole */ 277 278enum devnode_class { 279 DEVNODE_DONTBOTHER, 280 DEVNODE_SINGLE, 281 DEVNODE_VECTOR, 282}; 283#define DEVNODE_FLAG_LINKZERO 0x01 /* create name -> name0 link */ 284#define DEVNODE_FLAG_ISMINOR0 0x02 /* vector[0] specifies minor */ 285#ifdef notyet 286#define DEVNODE_FLAG_ISMINOR1 0x04 /* vector[1] specifies starting minor */ 287#endif 288 289struct devsw_conv { 290 const char *d_name; 291 devmajor_t d_bmajor; 292 devmajor_t d_cmajor; 293 294 /* information about /dev nodes related to the device */ 295 enum devnode_class d_class; 296 int d_flags; 297 int d_vectdim[2]; 298}; 299 300void devsw_init(void); 301const char *devsw_blk2name(devmajor_t); 302const char *cdevsw_getname(devmajor_t); 303const char *bdevsw_getname(devmajor_t); 304devmajor_t devsw_name2blk(const char *, char *, size_t); 305devmajor_t devsw_name2chr(const char *, char *, size_t); 306dev_t devsw_chr2blk(dev_t); 307dev_t devsw_blk2chr(dev_t); 308int dev_minor_unit(dev_t); 309 310void mm_init(void); 311#endif /* _KERNEL */ 312 313#ifdef _KERNEL 314void setroot(device_t, int); 315void rootconf(void); 316void swapconf(void); 317#endif /* _KERNEL */ 318 319#endif /* !_SYS_CONF_H_ */ 320