1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1991 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: @(#)cons.h 7.2 (Berkeley) 5/9/91 39 * $FreeBSD: src/sys/sys/cons.h,v 1.24 2000/01/11 14:54:01 yokota Exp $ 40 * $DragonFly: src/sys/sys/cons.h,v 1.4 2003/11/10 06:12:17 dillon Exp $ 41 */ 42 43 #ifndef _MACHINE_CONS_H_ 44 #define _MACHINE_CONS_H_ 45 46 struct consdev; 47 typedef void cn_probe_t (struct consdev *); 48 typedef void cn_init_t (struct consdev *); 49 typedef void cn_term_t (struct consdev *); 50 typedef int cn_getc_t (dev_t); 51 typedef int cn_checkc_t (dev_t); 52 typedef void cn_putc_t (dev_t, int); 53 typedef void cn_dbctl_t (dev_t, int); 54 55 struct consdev { 56 cn_probe_t *cn_probe; 57 /* probe hardware and fill in consdev info */ 58 cn_init_t *cn_init; 59 /* turn on as console */ 60 cn_term_t *cn_term; 61 /* turn off as console */ 62 cn_getc_t *cn_getc; 63 /* kernel getchar interface */ 64 cn_checkc_t *cn_checkc; 65 /* kernel "return char if available" interface */ 66 cn_putc_t *cn_putc; 67 /* kernel putchar interface */ 68 cn_dbctl_t *cn_dbctl; 69 /* debugger control interface */ 70 struct tty *cn_tp; /* tty structure for console device */ 71 dev_t cn_dev; /* major/minor of device */ 72 short cn_pri; /* pecking order; the higher the better */ 73 }; 74 75 /* values for cn_pri - reflect our policy for console selection */ 76 #define CN_DEAD 0 /* device doesn't exist */ 77 #define CN_NORMAL 1 /* device exists but is nothing special */ 78 #define CN_INTERNAL 2 /* "internal" bit-mapped display */ 79 #define CN_REMOTE 3 /* serial interface with remote bit set */ 80 81 #ifdef _KERNEL 82 extern int cons_unavail; 83 extern struct consdev *cn_tab; 84 85 #define CONS_DRIVER(name, probe, init, term, getc, checkc, putc, dbctl) \ 86 static struct consdev name##_consdev = { \ 87 probe, init, term, getc, checkc, putc, dbctl \ 88 }; \ 89 DATA_SET(cons_set, name##_consdev) 90 91 /* Other kernel entry points. */ 92 int cncheckc (void); 93 int cngetc (void); 94 void cninit (void); 95 void cninit_finish (void); 96 void cndbctl (int); 97 void cnputc (int); 98 99 #endif /* _KERNEL */ 100 101 #endif /* !_MACHINE_CONS_H_ */ 102