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BSD 4.3reno
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990 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 is only permitted until one year after the first shipment
* of 4.4BSD by the Regents. Otherwise, redistribution and use in source and
* binary forms are permitted provided that: (1) source distributions retain
* this entire copyright notice and comment, and (2) distributions including
* binaries display the following acknowledgement: This product includes
* software developed by the University of California, Berkeley and its
* contributors'' in the documentation or other materials provided with the
* distribution and in all advertising materials mentioning features or use
* of this software. 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 AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* from: Utah $Hdr: cons.h 1.4 88/12/03$
*
* @(#)cons.h 7.2 (Berkeley) 5/25/90
*/
struct consdev {
int (*cn_probe)(); /* probe hardware and fill in consdev info */
int (*cn_init)(); /* turn on as console */
int (*cn_getc)(); /* kernel getchar interface */
int (*cn_putc)(); /* kernel putchar interface */
struct tty *cn_tp; /* tty structure for console device */
dev_t cn_dev; /* major/minor of device */
short 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;
extern struct tty *cn_tty;
#endif
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