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114 lines
4.2 KiB
C
114 lines
4.2 KiB
C
/* $OpenBSD: cons.h,v 1.20 2024/05/13 01:15:50 jsg Exp $ */
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/* $NetBSD: cons.h,v 1.14 1996/03/14 19:08:35 christos Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: cons.h 1.6 92/01/21$
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*
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* @(#)cons.h 8.1 (Berkeley) 6/10/93
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*/
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struct consdev {
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/* probe hardware and fill in consdev info */
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void (*cn_probe)(struct consdev *);
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/* turn on as console */
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void (*cn_init)(struct consdev *);
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/* kernel getchar interface */
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int (*cn_getc)(dev_t);
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/* kernel putchar interface */
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void (*cn_putc)(dev_t, int);
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/* turn on and off polling */
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void (*cn_pollc)(dev_t, int);
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/* ring bell */
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void (*cn_bell)(dev_t, u_int, u_int, u_int);
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dev_t cn_dev; /* major/minor of device */
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u_int cn_pri; /* picking order; the higher the better */
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};
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/* Values for cn_pri - policy for console selection. */
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#define CN_DEAD 0 /* Device does not exist. */
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#define CN_LOWPRI 1 /* Device exists and is low priority. */
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#define CN_MIDPRI 2 /* Device exists and is medium priority. */
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#define CN_HIGHPRI 3 /* Device exists and is high priority. */
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#define CN_FORCED 4 /* Use this device. */
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/* XXX */
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#define CONSMAJOR 0
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#ifdef _KERNEL
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extern struct consdev constab[];
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extern struct consdev *cn_tab;
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extern struct tty *constty;
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extern struct vnode *cn_devvp;
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struct knote;
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void cninit(void);
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int cnopen(dev_t, int, int, struct proc *);
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int cnclose(dev_t, int, int, struct proc *);
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int cnread(dev_t, struct uio *, int);
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int cnwrite(dev_t, struct uio *, int);
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int cnioctl(dev_t, u_long, caddr_t, int, struct proc *);
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int cnkqfilter(dev_t, struct knote *);
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int cngetc(void);
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void cnputc(int);
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void cnpollc(int);
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void cnbell(u_int, u_int, u_int);
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void nullcnpollc(dev_t, int);
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/* console-specific types */
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#define dev_type_cnprobe(n) void n(struct consdev *)
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#define dev_type_cninit(n) void n(struct consdev *)
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#define dev_type_cngetc(n) int n(dev_t)
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#define dev_type_cnputc(n) void n(dev_t, int)
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#define dev_type_cnpollc(n) void n(dev_t, int)
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#define dev_type_cnbell(n) void n(dev_t, u_int, u_int, u_int)
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#define cons_decl(n) \
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dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \
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dev_decl(n,cnputc); dev_decl(n,cnpollc); dev_decl(n,cnbell);
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#define cons_init(n) { \
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dev_init(1,n,cnprobe), dev_init(1,n,cninit), dev_init(1,n,cngetc), \
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dev_init(1,n,cnputc), dev_init(1,n,cnpollc), NULL, \
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NODEV, CN_DEAD }
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#define cons_init_bell(n) { \
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dev_init(1,n,cnprobe), dev_init(1,n,cninit), dev_init(1,n,cngetc), \
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dev_init(1,n,cnputc), dev_init(1,n,cnpollc), dev_init(1,n,cnbell), \
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NODEV, CN_DEAD }
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#endif
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