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 1.7 2007/05/07 05:21:42 dillon Exp $ 41 */ 42 43 #ifndef _MACHINE_CONS_H_ 44 #define _MACHINE_CONS_H_ 45 46 #ifndef _SYS_TYPES_H_ 47 #include <sys/types.h> 48 #endif 49 50 struct consdev; 51 52 typedef void cn_probe_t (struct consdev *); 53 typedef void cn_init_t (struct consdev *); 54 typedef void cn_init_fini_t (struct consdev *); 55 typedef void cn_term_t (struct consdev *); 56 typedef int cn_getc_t (void *); 57 typedef int cn_checkc_t (void *); 58 typedef void cn_putc_t (void *, int); 59 typedef void cn_dbctl_t (void *, int); 60 61 struct consdev { 62 cn_probe_t *cn_probe; /* probe hardware */ 63 cn_init_t *cn_init; /* initialize for use */ 64 cn_init_fini_t *cn_init_fini; /* tie in cdev_t */ 65 cn_term_t *cn_term; /* terminate use as console */ 66 cn_getc_t *cn_getc; /* kernel getchar interface */ 67 cn_checkc_t *cn_checkc; /* kernel test char ready */ 68 cn_putc_t *cn_putc; /* kernel putchar interface */ 69 cn_dbctl_t *cn_dbctl; /* debugger control interface */ 70 struct tty *cn_tp; /* tty structure for console device */ 71 cdev_t cn_dev; /* device after cn_init_fini tie-in */ 72 short cn_pri; /* pecking order; the higher the better */ 73 short cn_probegood; /* probe routine must set to non-zero */ 74 void *cn_private; /* private data for get/check/put/dbctl */ 75 void *cn_gdbprivate; /* private data for gdb */ 76 int cn_unit; /* some drivers prefer this */ 77 int cn_flags; /* capabilities of this console */ 78 //char cn_name[SPECNAMELEN + 1]; /* console (device) name */ 79 80 }; 81 82 /* Values for cn_flags. */ 83 #define CN_FLAG_NODEBUG 0x00000001 /* Not supported with debugger. */ 84 #define CN_FLAG_NOAVAIL 0x00000002 /* Temporarily not available. */ 85 86 87 /* values for cn_pri - reflect our policy for console selection */ 88 #define CN_DEAD 0 /* device doesn't exist */ 89 #define CN_NORMAL 1 /* device exists but is nothing special */ 90 #define CN_INTERNAL 2 /* "internal" bit-mapped display */ 91 #define CN_REMOTE 3 /* serial interface with remote bit set */ 92 93 #ifdef _KERNEL 94 extern int cons_unavail; 95 extern struct consdev *cn_tab; /* console device */ 96 extern struct consdev *gdb_tab;/* gdb debugger device */ 97 98 #define CONS_DRIVER(name, probe, init, initfini, term, getc, checkc, putc, dbctl) \ 99 static struct consdev name##_consdev = { \ 100 probe, init, initfini, term, getc, checkc, putc, dbctl \ 101 }; \ 102 DATA_SET(cons_set, name##_consdev) 103 104 /* Other kernel entry points. */ 105 int cncheckc (void); 106 int cngetc (void); 107 void cninit (void); 108 void cninit_finish (void); 109 void cndbctl (int); 110 void cnputc (int); 111 112 #endif /* _KERNEL */ 113 114 #endif /* !_MACHINE_CONS_H_ */ 115