| 1 | /* $NetBSD: cons.h,v 1.27 2011/02/08 20:20:26 rmind 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. Neither the name of the University nor the names of its contributors |
| 21 | * may be used to endorse or promote products derived from this software |
| 22 | * without specific prior written permission. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 34 | * SUCH DAMAGE. |
| 35 | * |
| 36 | * from: Utah $Hdr: cons.h 1.6 92/01/21$ |
| 37 | * |
| 38 | * @(#)cons.h 8.1 (Berkeley) 6/10/93 |
| 39 | */ |
| 40 | |
| 41 | #ifndef _SYS_DEV_CONS_H_ |
| 42 | #define _SYS_DEV_CONS_H_ |
| 43 | |
| 44 | struct consdev { |
| 45 | void (*cn_probe) /* probe hardware and fill in consdev info */ |
| 46 | (struct consdev *); |
| 47 | void (*cn_init) /* turn on as console */ |
| 48 | (struct consdev *); |
| 49 | int (*cn_getc) /* kernel getchar interface */ |
| 50 | (dev_t); |
| 51 | void (*cn_putc) /* kernel putchar interface */ |
| 52 | (dev_t, int); |
| 53 | void (*cn_pollc) /* turn on and off polling */ |
| 54 | (dev_t, int); |
| 55 | void (*cn_bell) /* ring bell */ |
| 56 | (dev_t, u_int, u_int, u_int); |
| 57 | void (*cn_halt) /* stop device */ |
| 58 | (dev_t); |
| 59 | void (*cn_flush) /* flush output */ |
| 60 | (dev_t); |
| 61 | dev_t cn_dev; /* major/minor of device */ |
| 62 | int cn_pri; /* pecking order; the higher the better */ |
| 63 | }; |
| 64 | |
| 65 | /* values for cn_pri - reflect our policy for console selection */ |
| 66 | #define CN_DEAD 0 /* device doesn't exist */ |
| 67 | #define CN_NULL 1 /* noop console */ |
| 68 | #define CN_NORMAL 2 /* device exists but is nothing special */ |
| 69 | #define CN_INTERNAL 3 /* "internal" bit-mapped display */ |
| 70 | #define CN_REMOTE 4 /* serial interface with remote bit set */ |
| 71 | |
| 72 | #ifdef _KERNEL |
| 73 | |
| 74 | extern struct consdev constab[]; |
| 75 | extern struct consdev *cn_tab; |
| 76 | |
| 77 | void cninit(void); |
| 78 | int cngetc(void); |
| 79 | int cngetsn(char *, int); |
| 80 | void cnputc(int); |
| 81 | void cnpollc(int); |
| 82 | void cnbell(u_int, u_int, u_int); |
| 83 | void cnflush(void); |
| 84 | void cnhalt(void); |
| 85 | void cnrint(void); |
| 86 | void nullcnprobe(struct consdev *); |
| 87 | void nullcninit(struct consdev *); |
| 88 | void nullcnpollc(dev_t, int); |
| 89 | void nullconsattach(int); |
| 90 | |
| 91 | /* console-specific types */ |
| 92 | #define dev_type_cnprobe(n) void n(struct consdev *) |
| 93 | #define dev_type_cninit(n) void n(struct consdev *) |
| 94 | #define dev_type_cngetc(n) int n(dev_t) |
| 95 | #define dev_type_cnputc(n) void n(dev_t, int) |
| 96 | #define dev_type_cnpollc(n) void n(dev_t, int) |
| 97 | #define dev_type_cnbell(n) void n(dev_t, u_int, u_int, u_int) |
| 98 | #define dev_type_cnhalt(n) void n(dev_t) |
| 99 | #define dev_type_cnflush(n) void n(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), NULL, NULL, NULL, \ |
| 112 | 0, 0 } |
| 113 | |
| 114 | #define cons_init_bell(n) { \ |
| 115 | dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \ |
| 116 | dev_init(n,cnputc), dev_init(n,cnpollc), dev_init(n,cnbell) } |
| 117 | |
| 118 | #define cons_init_halt(n) { \ |
| 119 | dev_init(n,cnprobe), dev_init(n,cninit), dev_init(n,cngetc), \ |
| 120 | dev_init(n,cnputc), dev_init(n,cnpollc), 0, \ |
| 121 | dev_init(n,cnhalt) } |
| 122 | |
| 123 | #endif |
| 124 | |
| 125 | #endif /* _SYS_DEV_CONS_H_ */ |
| 126 | |