1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: Utah Hdr: cons.h 1.1 90/07/09 39 * from: @(#)cons.h 7.3 (Berkeley) 11/2/90 40 * $Id: cons.h,v 1.4 1993/08/01 19:24:42 mycroft Exp $ 41 */ 42 43 struct consdev { 44 int (*cn_probe)(); /* probe hardware and fill in consdev info */ 45 int (*cn_init)(); /* turn on as console */ 46 int (*cn_getc)(); /* kernel getchar interface */ 47 int (*cn_putc)(); /* kernel putchar interface */ 48 dev_t cn_dev; /* major/minor of device */ 49 short cn_pri; /* pecking order; the higher the better */ 50 }; 51 52 /* values for cn_pri - reflect our policy for console selection */ 53 #define CN_DEAD 0 /* device doesn't exist */ 54 #define CN_NORMAL 1 /* device exists but is nothing special */ 55 #define CN_INTERNAL 2 /* "internal" bit-mapped display */ 56 #define CN_REMOTE 3 /* serial interface with remote bit set */ 57 58 /* XXX */ 59 #define CONSMAJOR 0 60 61 #ifdef KERNEL 62 extern struct consdev constab[]; 63 extern struct consdev *cn_tab; 64 #endif 65