conf.h revision 48936
1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)conf.h 8.5 (Berkeley) 1/9/95 39 * $Id: conf.h,v 1.66 1999/07/17 19:58:51 phk Exp $ 40 */ 41 42#ifndef _SYS_CONF_H_ 43#define _SYS_CONF_H_ 44 45/* 46 * Definitions of device driver entry switches 47 */ 48 49struct buf; 50struct proc; 51struct specinfo; 52struct tty; 53struct uio; 54struct vnode; 55 56typedef int d_open_t __P((dev_t dev, int oflags, int devtype, struct proc *p)); 57typedef int d_close_t __P((dev_t dev, int fflag, int devtype, struct proc *p)); 58typedef void d_strategy_t __P((struct buf *bp)); 59typedef int d_parms_t __P((dev_t dev, struct specinfo *sinfo, int ctl)); 60typedef int d_ioctl_t __P((dev_t dev, u_long cmd, caddr_t data, 61 int fflag, struct proc *p)); 62typedef int d_dump_t __P((dev_t dev)); 63typedef int d_psize_t __P((dev_t dev)); 64 65typedef int d_read_t __P((dev_t dev, struct uio *uio, int ioflag)); 66typedef int d_write_t __P((dev_t dev, struct uio *uio, int ioflag)); 67typedef void d_stop_t __P((struct tty *tp, int rw)); 68typedef int d_reset_t __P((dev_t dev)); 69typedef struct tty *d_devtotty_t __P((dev_t dev)); 70typedef int d_poll_t __P((dev_t dev, int events, struct proc *p)); 71typedef int d_mmap_t __P((dev_t dev, vm_offset_t offset, int nprot)); 72 73typedef int l_open_t __P((dev_t dev, struct tty *tp)); 74typedef int l_close_t __P((struct tty *tp, int flag)); 75typedef int l_read_t __P((struct tty *tp, struct uio *uio, int flag)); 76typedef int l_write_t __P((struct tty *tp, struct uio *uio, int flag)); 77typedef int l_ioctl_t __P((struct tty *tp, u_long cmd, caddr_t data, 78 int flag, struct proc *p)); 79typedef int l_rint_t __P((int c, struct tty *tp)); 80typedef int l_start_t __P((struct tty *tp)); 81typedef int l_modem_t __P((struct tty *tp, int flag)); 82 83/* 84 * Types for d_type. 85 */ 86#define D_TAPE 1 87#define D_DISK 2 88#define D_TTY 3 89 90#define D_TYPEMASK 0xffff 91 92/* 93 * Flags for d_flags. 94 */ 95#define D_NOCLUSTERR 0x10000 /* disables cluter read */ 96#define D_NOCLUSTERW 0x20000 /* disables cluster write */ 97#define D_NOCLUSTERRW (D_NOCLUSTERR | D_NOCLUSTERW) 98#define D_CANFREE 0x40000 /* can free blocks */ 99 100/* 101 * Control type for d_parms() call. 102 */ 103#define DPARM_GET 0 /* ask device to load parms in */ 104 105/* 106 * Character device switch table 107 */ 108struct cdevsw { 109 d_open_t *d_open; 110 d_close_t *d_close; 111 d_read_t *d_read; 112 d_write_t *d_write; 113 d_ioctl_t *d_ioctl; 114 d_stop_t *d_stop; 115 d_reset_t *d_bogoreset; /* XXX not used */ 116 d_devtotty_t *d_devtotty; 117 d_poll_t *d_poll; 118 d_mmap_t *d_mmap; 119 d_strategy_t *d_strategy; 120 char *d_name; /* base device name, e.g. 'vn' */ 121 d_parms_t *d_bogoparms; /* XXX not used */ 122 int d_maj; 123 d_dump_t *d_dump; 124 d_psize_t *d_psize; 125 u_int d_flags; 126 int d_maxio; 127 int d_bmaj; 128}; 129 130/* 131 * Line discipline switch table 132 */ 133struct linesw { 134 l_open_t *l_open; 135 l_close_t *l_close; 136 l_read_t *l_read; 137 l_write_t *l_write; 138 l_ioctl_t *l_ioctl; 139 l_rint_t *l_rint; 140 l_start_t *l_start; 141 l_modem_t *l_modem; 142 u_char l_hotchar; 143}; 144 145#ifdef KERNEL 146extern struct linesw linesw[]; 147extern int nlinesw; 148 149int ldisc_register __P((int , struct linesw *)); 150void ldisc_deregister __P((int)); 151#define LDISC_LOAD -1 /* Loadable line discipline */ 152#endif 153 154/* 155 * Swap device table 156 */ 157struct swdevt { 158 udev_t sw_dev; /* For quasibogus swapdev reporting */ 159 int sw_flags; 160 int sw_nblks; 161 struct vnode *sw_vp; 162 dev_t sw_device; 163}; 164#define SW_FREED 0x01 165#define SW_SEQUENTIAL 0x02 166#define sw_freed sw_flags /* XXX compat */ 167 168#ifdef KERNEL 169d_open_t noopen; 170d_close_t noclose; 171d_read_t noread; 172d_write_t nowrite; 173d_ioctl_t noioctl; 174d_stop_t nostop; 175d_reset_t noreset; 176d_devtotty_t nodevtotty; 177d_mmap_t nommap; 178#define nostrategy ((d_strategy_t *)NULL) 179#define noparms ((d_parms_t *)NULL) 180#define nopoll seltrue 181 182d_dump_t nodump; 183 184#define NUMCDEVSW 256 185 186/* 187 * nopsize is little used, so not worth having dummy functions for. 188 */ 189#define nopsize ((d_psize_t *)NULL) 190 191d_open_t nullopen; 192d_close_t nullclose; 193 194l_read_t l_noread; 195l_write_t l_nowrite; 196 197struct module; 198 199struct devsw_module_data { 200 int (*chainevh)(struct module *, int, void *); /* next handler */ 201 void *chainarg; /* arg for next event handler */ 202 struct cdevsw *cdevsw; /* device functions */ 203 /* Do not initialize fields hereafter */ 204}; 205 206#define DEV_MODULE(name, cmaj, bmaj, devsw, evh, arg) \ 207static struct devsw_module_data name##_devsw_mod = { \ 208 evh, arg, &devsw \ 209}; \ 210 \ 211static moduledata_t name##_mod = { \ 212 #name, \ 213 devsw_module_handler, \ 214 &name##_devsw_mod \ 215}; \ 216DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+cmaj*256+bmaj) 217 218 219struct cdevsw *bdevsw __P((dev_t dev)); 220int cdevsw_add __P((struct cdevsw *new)); 221int cdevsw_remove __P((struct cdevsw *old)); 222dev_t chrtoblk __P((dev_t dev)); 223struct cdevsw *devsw __P((dev_t dev)); 224int devsw_module_handler __P((struct module *mod, int what, void *arg)); 225int iskmemdev __P((dev_t dev)); 226int iszerodev __P((dev_t dev)); 227dev_t makebdev __P((int maj, int min)); 228void setconf __P((void)); 229#endif /* KERNEL */ 230 231#endif /* !_SYS_CONF_H_ */ 232