NetBSD/sys/dev/cons.h

130 lines
4.6 KiB
C

/* $NetBSD: cons.h,v 1.29 2022/10/03 19:12:29 riastradh 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. 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
*/
#ifndef _SYS_DEV_CONS_H_
#define _SYS_DEV_CONS_H_
#include <sys/types.h>
struct consdev {
void (*cn_probe) /* probe hardware and fill in consdev info */
(struct consdev *);
void (*cn_init) /* turn on as console */
(struct consdev *);
int (*cn_getc) /* kernel getchar interface */
(dev_t);
void (*cn_putc) /* kernel putchar interface */
(dev_t, int);
void (*cn_pollc) /* turn on and off polling */
(dev_t, int);
void (*cn_bell) /* ring bell */
(dev_t, u_int, u_int, u_int);
void (*cn_halt) /* stop device */
(dev_t);
void (*cn_flush) /* flush output */
(dev_t);
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_NULL 1 /* noop console */
#define CN_NORMAL 2 /* device exists but is nothing special */
#define CN_INTERNAL 3 /* "internal" bit-mapped display */
#define CN_REMOTE 4 /* serial interface with remote bit set */
#ifdef _KERNEL
extern struct consdev constab[];
extern struct consdev *cn_tab;
void cn_set_tab(struct consdev *);
void cninit(void);
int cngetc(void);
int cngetsn(char *, int);
void cnputc(int);
void cnpollc(int);
void cnbell(u_int, u_int, u_int);
void cnflush(void);
void cnhalt(void);
void cnrint(void);
void nullcnprobe(struct consdev *);
void nullcninit(struct consdev *);
void nullcnpollc(dev_t, int);
void nullconsattach(int);
/* console-specific types */
#define dev_type_cnprobe(n) void n(struct consdev *)
#define dev_type_cninit(n) void n(struct consdev *)
#define dev_type_cngetc(n) int n(dev_t)
#define dev_type_cnputc(n) void n(dev_t, int)
#define dev_type_cnpollc(n) void n(dev_t, int)
#define dev_type_cnbell(n) void n(dev_t, u_int, u_int, u_int)
#define dev_type_cnhalt(n) void n(dev_t)
#define dev_type_cnflush(n) void n(dev_t)
#define dev_decl(n,t) __CONCAT(dev_type_,t)(__CONCAT(n,t))
#define dev_init(n,t) __CONCAT(n,t)
#define cons_decl(n) \
dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \
dev_decl(n,cnputc); dev_decl(n,cnpollc); dev_decl(n,cnbell); \
dev_decl(n,cnflush); dev_decl(n,cnhalt);
#define cons_init(n) { \
dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
dev_init(n,cnputc), dev_init(n,cnpollc), NULL, NULL, NULL, \
0, 0 }
#define cons_init_bell(n) { \
dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
dev_init(n,cnputc), dev_init(n,cnpollc), dev_init(n,cnbell) }
#define cons_init_halt(n) { \
dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \
dev_init(n,cnputc), dev_init(n,cnpollc), 0, \
dev_init(n,cnhalt) }
#endif
#endif /* _SYS_DEV_CONS_H_ */