1 /* $NetBSD: cons.h,v 1.20 2003/03/06 00:38:26 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: cons.h 1.6 92/01/21$ 41 * 42 * @(#)cons.h 8.1 (Berkeley) 6/10/93 43 */ 44 45 #ifndef _SYS_DEV_CONS_H_ 46 #define _SYS_DEV_CONS_H_ 47 48 struct consdev { 49 void (*cn_probe) /* probe hardware and fill in consdev info */ 50 __P((struct consdev *)); 51 void (*cn_init) /* turn on as console */ 52 __P((struct consdev *)); 53 int (*cn_getc) /* kernel getchar interface */ 54 __P((dev_t)); 55 void (*cn_putc) /* kernel putchar interface */ 56 __P((dev_t, int)); 57 void (*cn_pollc) /* turn on and off polling */ 58 __P((dev_t, int)); 59 void (*cn_bell) /* ring bell */ 60 __P((dev_t, u_int, u_int, u_int)); 61 void (*cn_halt) /* stop device */ 62 __P((dev_t)); 63 void (*cn_flush) /* flush output */ 64 __P((dev_t)); 65 dev_t cn_dev; /* major/minor of device */ 66 int cn_pri; /* pecking order; the higher the better */ 67 }; 68 69 /* values for cn_pri - reflect our policy for console selection */ 70 #define CN_DEAD 0 /* device doesn't exist */ 71 #define CN_NORMAL 1 /* device exists but is nothing special */ 72 #define CN_INTERNAL 2 /* "internal" bit-mapped display */ 73 #define CN_REMOTE 3 /* serial interface with remote bit set */ 74 75 #ifdef _KERNEL 76 77 extern struct consdev constab[]; 78 extern struct consdev *cn_tab; 79 80 void cninit __P((void)); 81 int cngetc __P((void)); 82 int cngetsn __P((char *, int)); 83 void cnputc __P((int)); 84 void cnpollc __P((int)); 85 void cnbell __P((u_int, u_int, u_int)); 86 void cnflush __P((void)); 87 void cnhalt __P((void)); 88 void cnrint __P((void)); 89 void nullcnpollc __P((dev_t, int)); 90 91 /* console-specific types */ 92 #define dev_type_cnprobe(n) void n __P((struct consdev *)) 93 #define dev_type_cninit(n) void n __P((struct consdev *)) 94 #define dev_type_cngetc(n) int n __P((dev_t)) 95 #define dev_type_cnputc(n) void n __P((dev_t, int)) 96 #define dev_type_cnpollc(n) void n __P((dev_t, int)) 97 #define dev_type_cnbell(n) void n __P((dev_t, u_int, u_int, u_int)); 98 #define dev_type_cnhalt(n) void n __P((dev_t)) 99 #define dev_type_cnflush(n) void n __P((dev_t)) 100 101 #define dev_decl(n,t) __CONCAT(dev_type_,t)(__CONCAT(n,t)) 102 #define dev_init(n,t) __CONCAT(n,t) 103 104 #define cons_decl(n) \ 105 dev_decl(n,cnprobe); dev_decl(n,cninit); dev_decl(n,cngetc); \ 106 dev_decl(n,cnputc); dev_decl(n,cnpollc); dev_decl(n,cnbell); \ 107 dev_decl(n,cnflush); dev_decl(n,cnhalt); 108 109 #define cons_init(n) { \ 110 dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \ 111 dev_init(n,cnputc), dev_init(n,cnpollc) } 112 113 #define cons_init_bell(n) { \ 114 dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \ 115 dev_init(n,cnputc), dev_init(n,cnpollc), dev_init(n,cnbell) } 116 117 #define cons_init_halt(n) { \ 118 dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \ 119 dev_init(n,cnputc), dev_init(n,cnpollc), 0, \ 120 dev_init(n,cnhalt) } 121 122 #endif 123 124 #endif /* _SYS_DEV_CONS_H_ */ 125