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/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)conf.h 8.5 (Berkeley) 1/9/95
* $Id: conf.h,v 1.49 1999/01/21 16:15:53 peter Exp $
*/
#ifndef _SYS_CONF_H_
#define _SYS_CONF_H_
/*
* Definitions of device driver entry switches
*/
struct buf;
struct proc;
struct specinfo;
struct tty;
struct uio;
struct vnode;
typedef int d_open_t __P((dev_t dev, int oflags, int devtype, struct proc *p));
typedef int d_close_t __P((dev_t dev, int fflag, int devtype, struct proc *p));
typedef void d_strategy_t __P((struct buf *bp));
typedef int d_parms_t __P((dev_t dev, struct specinfo *sinfo, int ctl));
typedef int d_ioctl_t __P((dev_t dev, u_long cmd, caddr_t data,
int fflag, struct proc *p));
typedef int d_dump_t __P((dev_t dev));
typedef int d_psize_t __P((dev_t dev));
typedef int d_read_t __P((dev_t dev, struct uio *uio, int ioflag));
typedef int d_write_t __P((dev_t dev, struct uio *uio, int ioflag));
typedef void d_stop_t __P((struct tty *tp, int rw));
typedef int d_reset_t __P((dev_t dev));
typedef struct tty *d_devtotty_t __P((dev_t dev));
typedef int d_poll_t __P((dev_t dev, int events, struct proc *p));
typedef int d_mmap_t __P((dev_t dev, vm_offset_t offset, int nprot));
typedef int l_open_t __P((dev_t dev, struct tty *tp));
typedef int l_close_t __P((struct tty *tp, int flag));
typedef int l_read_t __P((struct tty *tp, struct uio *uio, int flag));
typedef int l_write_t __P((struct tty *tp, struct uio *uio, int flag));
typedef int l_ioctl_t __P((struct tty *tp, u_long cmd, caddr_t data,
int flag, struct proc *p));
typedef int l_rint_t __P((int c, struct tty *tp));
typedef int l_start_t __P((struct tty *tp));
typedef int l_modem_t __P((struct tty *tp, int flag));
/*
* Types for d_type.
*/
#define D_TAPE 1
#define D_DISK 2
#define D_TTY 3
#define D_TYPEMASK 0xffff
/*
* Flags for d_flags.
*/
#define D_NOCLUSTERR 0x10000 /* disables cluter read */
#define D_NOCLUSTERW 0x20000 /* disables cluster write */
#define D_NOCLUSTERRW (D_NOCLUSTERR | D_NOCLUSTERW)
#define D_CANFREE 0x40000 /* can free blocks */
/*
* Control type for d_parms() call.
*/
#define DPARM_GET 0 /* ask device to load parms in */
/*
* Character device switch table
*/
struct cdevsw {
d_open_t *d_open;
d_close_t *d_close;
d_read_t *d_read;
d_write_t *d_write;
d_ioctl_t *d_ioctl;
d_stop_t *d_stop;
d_reset_t *d_reset; /* XXX not used */
d_devtotty_t *d_devtotty;
d_poll_t *d_poll;
d_mmap_t *d_mmap;
d_strategy_t *d_strategy;
char *d_name; /* base device name, e.g. 'vn' */
d_parms_t *d_parms; /* populate/override specinfo */
int d_maj;
d_dump_t *d_dump;
d_psize_t *d_psize;
u_int d_flags;
int d_maxio;
int d_bmaj;
};
#ifdef KERNEL
extern struct cdevsw *bdevsw[];
extern struct cdevsw *cdevsw[];
#endif
/*
* Line discipline switch table
*/
struct linesw {
l_open_t *l_open;
l_close_t *l_close;
l_read_t *l_read;
l_write_t *l_write;
l_ioctl_t *l_ioctl;
l_rint_t *l_rint;
l_start_t *l_start;
l_modem_t *l_modem;
u_char l_hotchar;
};
#ifdef KERNEL
extern struct linesw linesw[];
extern int nlinesw;
int ldisc_register __P((int , struct linesw *));
void ldisc_deregister __P((int));
#define LDISC_LOAD -1 /* Loadable line discipline */
#endif
/*
* Swap device table
*/
struct swdevt {
dev_t sw_dev;
int sw_flags;
int sw_nblks;
struct vnode *sw_vp;
};
#define SW_FREED 0x01
#define SW_SEQUENTIAL 0x02
#define sw_freed sw_flags /* XXX compat */
#ifdef KERNEL
d_open_t noopen;
d_close_t noclose;
d_read_t noread;
d_write_t nowrite;
d_ioctl_t noioctl;
d_stop_t nostop;
d_reset_t noreset;
d_devtotty_t nodevtotty;
d_mmap_t nommap;
/* Bogus defines for compatibility. */
#define noioc noioctl
#define nostrat nostrategy
#define zerosize nopsize
/*
* XXX d_strategy seems to be unused for cdevs that aren't associated with
* bdevs and called without checking for it being non-NULL for bdevs.
*/
#define nostrategy ((d_strategy_t *)NULL)
d_dump_t nodump;
/*
* nopsize is little used, so not worth having dummy functions for.
*/
#define nopsize ((d_psize_t *)NULL)
d_open_t nullopen;
d_close_t nullclose;
#define nullstop nostop /* one void return is as good as another */
#define nullreset noreset /* one unused function is as good as another */
l_read_t l_noread;
l_write_t l_nowrite;
struct module;
struct cdevsw_module_data {
int (*chainevh)(struct module *, int, void *); /* next handler */
void *chainarg; /* arg for next event handler */
dev_t dev; /* device major to use */
struct cdevsw *cdevsw; /* device functions */
};
struct bdevsw_module_data {
int (*chainevh)(struct module *, int, void *); /* next handler */
void *chainarg; /* arg for next event handler */
int bdev; /* device major to use */
int cdev; /* device major to use */
struct cdevsw *cdevsw; /* device functions */
};
#define CDEV_MODULE(name, major, devsw, evh, arg) \
static struct cdevsw_module_data name##_cdevsw_mod = { \
evh, arg, major == NODEV ? NODEV : makedev(major, 0), &devsw \
}; \
\
static moduledata_t name##_mod = { \
#name, \
cdevsw_module_handler, \
&name##_cdevsw_mod \
}; \
DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+major)
#define BDEV_MODULE(name, bdev, cdev, devsw, evh, arg) \
static struct bdevsw_module_data name##_bdevsw_mod = { \
evh, arg, bdev == NODEV ? NODEV : makedev(bdev, 0), \
cdev == NODEV ? NODEV : makedev(cdev, 0), &devsw \
}; \
\
static moduledata_t name##_mod = { \
#name, \
bdevsw_module_handler, \
&name##_bdevsw_mod \
}; \
DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+cdev)
int cdevsw_module_handler __P((struct module *mod, int what, void *arg));
int bdevsw_module_handler __P((struct module *mod, int what, void *arg));
int cdevsw_add __P((dev_t *descrip,struct cdevsw *new,struct cdevsw **old));
void cdevsw_add_generic __P((int bdev, int cdev, struct cdevsw *cdevsw));
dev_t chrtoblk __P((dev_t dev));
int iskmemdev __P((dev_t dev));
int iszerodev __P((dev_t dev));
void setconf __P((void));
#endif /* KERNEL */
#endif /* !_SYS_CONF_H_ */
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