conf.h revision 36735
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 1.39 1998/02/13 12:46:28 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 tty; 52struct uio; 53struct vnode; 54 55typedef int d_open_t __P((dev_t dev, int oflags, int devtype, struct proc *p)); 56typedef int d_close_t __P((dev_t dev, int fflag, int devtype, struct proc *p)); 57typedef void d_strategy_t __P((struct buf *bp)); 58typedef int d_ioctl_t __P((dev_t dev, u_long cmd, caddr_t data, 59 int fflag, struct proc *p)); 60typedef int d_dump_t __P((dev_t dev)); 61typedef int d_psize_t __P((dev_t dev)); 62 63typedef int d_read_t __P((dev_t dev, struct uio *uio, int ioflag)); 64typedef int d_write_t __P((dev_t dev, struct uio *uio, int ioflag)); 65typedef void d_stop_t __P((struct tty *tp, int rw)); 66typedef int d_reset_t __P((dev_t dev)); 67typedef struct tty *d_devtotty_t __P((dev_t dev)); 68typedef int d_poll_t __P((dev_t dev, int events, struct proc *p)); 69typedef int d_mmap_t __P((dev_t dev, int offset, int nprot)); 70 71typedef int l_open_t __P((dev_t dev, struct tty *tp)); 72typedef int l_close_t __P((struct tty *tp, int flag)); 73typedef int l_read_t __P((struct tty *tp, struct uio *uio, int flag)); 74typedef int l_write_t __P((struct tty *tp, struct uio *uio, int flag)); 75typedef int l_ioctl_t __P((struct tty *tp, u_long cmd, caddr_t data, 76 int flag, struct proc *p)); 77typedef int l_rint_t __P((int c, struct tty *tp)); 78typedef int l_start_t __P((struct tty *tp)); 79typedef int l_modem_t __P((struct tty *tp, int flag)); 80 81/* 82 * Types for d_type. 83 */ 84#define D_TAPE 1 85#define D_DISK 2 86#define D_TTY 3 87 88#define D_TYPEMASK 0xffff 89 90/* 91 * Flags for d_flags. 92 */ 93#define D_NOCLUSTERR 0x10000 /* disables cluter read */ 94#define D_NOCLUSTERW 0x20000 /* disables cluster write */ 95#define D_NOCLUSTERRW (D_NOCLUSTERR | D_NOCLUSTERW) 96 97/* 98 * Block device switch table 99 */ 100struct bdevsw { 101 d_open_t *d_open; 102 d_close_t *d_close; 103 d_strategy_t *d_strategy; 104 d_ioctl_t *d_ioctl; 105 d_dump_t *d_dump; 106 d_psize_t *d_psize; 107 u_int d_flags; 108 char *d_name; /* name of the driver e.g. audio */ 109 struct cdevsw *d_cdev; /* cross pointer to the cdev */ 110 int d_maj; /* the major number we were assigned */ 111 int d_maxio; 112}; 113 114#ifdef KERNEL 115extern struct bdevsw *bdevsw[]; 116#endif 117 118/* 119 * Character device switch table 120 */ 121struct cdevsw { 122 d_open_t *d_open; 123 d_close_t *d_close; 124 d_read_t *d_read; 125 d_write_t *d_write; 126 d_ioctl_t *d_ioctl; 127 d_stop_t *d_stop; 128 d_reset_t *d_reset; /* XXX not used */ 129 d_devtotty_t *d_devtotty; 130 d_poll_t *d_poll; 131 d_mmap_t *d_mmap; 132 d_strategy_t *d_strategy; 133 char *d_name; /* see above */ 134 struct bdevsw *d_bdev; 135 int d_maj; 136}; 137 138#ifdef KERNEL 139extern struct cdevsw *cdevsw[]; 140#endif 141 142/* 143 * Line discipline switch table 144 */ 145struct linesw { 146 l_open_t *l_open; 147 l_close_t *l_close; 148 l_read_t *l_read; 149 l_write_t *l_write; 150 l_ioctl_t *l_ioctl; 151 l_rint_t *l_rint; 152 l_start_t *l_start; 153 l_modem_t *l_modem; 154 u_char l_hotchar; 155}; 156 157#ifdef KERNEL 158extern struct linesw linesw[]; 159extern int nlinesw; 160 161int ldisc_register __P((int , struct linesw *)); 162void ldisc_deregister __P((int)); 163#define LDISC_LOAD -1 /* Loadable line discipline */ 164#endif 165 166/* 167 * Swap device table 168 */ 169struct swdevt { 170 dev_t sw_dev; 171 int sw_flags; 172 int sw_nblks; 173 struct vnode *sw_vp; 174}; 175#define SW_FREED 0x01 176#define SW_SEQUENTIAL 0x02 177#define sw_freed sw_flags /* XXX compat */ 178 179#ifdef KERNEL 180d_open_t noopen; 181d_close_t noclose; 182d_read_t noread; 183d_write_t nowrite; 184d_ioctl_t noioctl; 185d_stop_t nostop; 186d_reset_t noreset; 187d_devtotty_t nodevtotty; 188d_mmap_t nommap; 189 190/* Bogus defines for compatibility. */ 191#define noioc noioctl 192#define nostrat nostrategy 193#define zerosize nopsize 194/* 195 * XXX d_strategy seems to be unused for cdevs that aren't associated with 196 * bdevs and called without checking for it being non-NULL for bdevs. 197 */ 198#define nostrategy ((d_strategy_t *)NULL) 199 200d_dump_t nodump; 201 202/* 203 * nopsize is little used, so not worth having dummy functions for. 204 */ 205#define nopsize ((d_psize_t *)NULL) 206 207d_open_t nullopen; 208d_close_t nullclose; 209#define nullstop nostop /* one void return is as good as another */ 210#define nullreset noreset /* one unused function is as good as another */ 211 212d_open_t nxopen; 213d_close_t nxclose; 214d_read_t nxread; 215d_write_t nxwrite; 216d_ioctl_t nxioctl; 217#define nxstop nostop /* one void return is as good as another */ 218#define nxreset noreset /* one unused function is as good as another */ 219#define nxdevtotty nodevtotty /* one NULL return is as good as another */ 220#define nxmmap nommap /* one -1 return is as good as another */ 221#define nxstrategy nostrategy /* one NULL value is as good as another */ 222d_dump_t nxdump; 223#define nxpsize nopsize /* one NULL value is as good as another */ 224 225d_read_t rawread; 226d_write_t rawwrite; 227 228l_read_t l_noread; 229l_write_t l_nowrite; 230 231/* 232 * XXX This is ugly. 233 */ 234#ifdef _SYS_MODULE_H_ 235 236struct cdevsw_module_data { 237 modeventhand_t chainevh; /* next event handler in chain */ 238 void* chainarg; /* arg for next event handler */ 239 dev_t dev; /* device major to use */ 240 struct cdevsw* cdevsw; /* device functions */ 241}; 242 243struct bdevsw_module_data { 244 modeventhand_t chainevh; /* next event handler in chain */ 245 void* chainarg; /* arg for next event handler */ 246 int bdev; /* device major to use */ 247 int cdev; /* device major to use */ 248 struct bdevsw* bdevsw; /* device functions */ 249}; 250 251#define CDEV_MODULE(name, major, devsw, evh, arg) \ 252static struct cdevsw_module_data name##_cdevsw_mod = { \ 253 evh, arg, makedev(major, 0), &devsw \ 254}; \ 255 \ 256static moduledata_t name##_mod = { \ 257 #name, \ 258 cdevsw_module_handler, \ 259 &name##_cdevsw_mod \ 260}; \ 261DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+major) 262 263#define BDEV_MODULE(name, bdev, cdev, devsw, evh, arg) \ 264static struct bdevsw_module_data name##_bdevsw_mod = { \ 265 evh, arg, makedev(bdev, 0), makedev(cdev, 0), &devsw \ 266}; \ 267 \ 268static moduledata_t name##_mod = { \ 269 #name, \ 270 bdevsw_module_handler, \ 271 &name##_bdevsw_mod \ 272}; \ 273DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+cdev) 274 275int cdevsw_module_handler __P((module_t mod, modeventtype_t what, void* arg)); 276int bdevsw_module_handler __P((module_t mod, modeventtype_t what, void* arg)); 277 278#endif /* _SYS_MODULE_H_ */ 279 280int bdevsw_add __P((dev_t *descrip,struct bdevsw *new,struct bdevsw **old)); 281int cdevsw_add __P((dev_t *descrip,struct cdevsw *new,struct cdevsw **old)); 282void bdevsw_add_generic __P((int bdev, int cdev, struct bdevsw *bdevsw)); 283dev_t chrtoblk __P((dev_t dev)); 284int iskmemdev __P((dev_t dev)); 285int iszerodev __P((dev_t dev)); 286void setconf __P((void)); 287#endif /* KERNEL */ 288 289#include <machine/conf.h> 290 291#endif /* !_SYS_CONF_H_ */ 292