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/* $OpenBSD: cons.h,v 1.7 2001/03/01 20:54:33 provos Exp $ */
/* $NetBSD: cons.h,v 1.14 1996/03/14 19:08:35 christos Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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.
*
* from: Utah $Hdr: cons.h 1.6 92/01/21$
*
* @(#)cons.h 8.1 (Berkeley) 6/10/93
*/
struct consdev {
void (*cn_probe) /* probe hardware and fill in consdev info */
__P((struct consdev *));
void (*cn_init) /* turn on as console */
__P((struct consdev *));
int (*cn_getc) /* kernel getchar interface */
__P((dev_t));
void (*cn_putc) /* kernel putchar interface */
__P((dev_t, int));
void (*cn_pollc) /* turn on and off polling */
__P((dev_t, int));
dev_t cn_dev; /* major/minor of device */
int cn_pri; /* pecking order; the higher the better */
};
/* values for cn_pri - reflect our policy for console selection */
#define CN_DEAD 0 /* device doesn't exist */
#define CN_NORMAL 1 /* device exists but is nothing special */
#define CN_INTERNAL 2 /* "internal" bit-mapped display */
#define CN_REMOTE 3 /* serial interface with remote bit set */
/* XXX */
#define CONSMAJOR 0
#ifdef _KERNEL
extern struct consdev constab[];
extern struct consdev *cn_tab;
struct knote;
void cninit __P((void));
int cnset __P((dev_t));
int cnopen __P((dev_t, int, int, struct proc *));
int cnclose __P((dev_t, int, int, struct proc *));
int cnread __P((dev_t, struct uio *, int));
int cnwrite __P((dev_t, struct uio *, int));
int cnioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
int cnselect __P((dev_t, int, struct proc *));
int cnkqfilter __P((dev_t, struct knote *));
int cngetc __P((void));
void cnputc __P((int));
void cnpollc __P((int));
void cnrint __P((void));
void nullcnpollc __P((dev_t, int));
/* console-specific types */
#define dev_type_cnprobe(n) void n __P((struct consdev *))
#define dev_type_cninit(n) void n __P((struct consdev *))
#define dev_type_cngetc(n) int n __P((dev_t))
#define dev_type_cnputc(n) void n __P((dev_t, int))
#define dev_type_cnpollc(n) void n __P((dev_t, int))
#define cons_decl(n) \
dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \
dev_decl(n,cnputc); dev_decl(n,cnpollc)
#define cons_init(n) { \
dev_init(1,n,cnprobe), dev_init(1,n,cninit), dev_init(1,n,cngetc), \
dev_init(1,n,cnputc), dev_init(1,n,cnpollc) }
#endif
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