141474Smckusick /* 241474Smckusick * Copyright (c) 1988 University of Utah. 3*63146Sbostic * Copyright (c) 1990, 1993 4*63146Sbostic * The Regents of the University of California. All rights reserved. 541474Smckusick * 641474Smckusick * This code is derived from software contributed to Berkeley by 741474Smckusick * the Systems Programming Group of the University of Utah Computer 841474Smckusick * Science Department. 941474Smckusick * 1041474Smckusick * %sccs.include.redist.c% 1141474Smckusick * 1253923Shibler * from: Utah $Hdr: cons.h 1.6 92/01/21$ 1341474Smckusick * 14*63146Sbostic * @(#)cons.h 8.1 (Berkeley) 06/10/93 1541474Smckusick */ 1641474Smckusick 1741474Smckusick struct consdev { 1841474Smckusick int (*cn_probe)(); /* probe hardware and fill in consdev info */ 1941474Smckusick int (*cn_init)(); /* turn on as console */ 2041474Smckusick int (*cn_getc)(); /* kernel getchar interface */ 2141474Smckusick int (*cn_putc)(); /* kernel putchar interface */ 2241474Smckusick struct tty *cn_tp; /* tty structure for console device */ 2341474Smckusick dev_t cn_dev; /* major/minor of device */ 2441474Smckusick short cn_pri; /* pecking order; the higher the better */ 2541474Smckusick }; 2641474Smckusick 2741474Smckusick /* values for cn_pri - reflect our policy for console selection */ 2841474Smckusick #define CN_DEAD 0 /* device doesn't exist */ 2941474Smckusick #define CN_NORMAL 1 /* device exists but is nothing special */ 3041474Smckusick #define CN_INTERNAL 2 /* "internal" bit-mapped display */ 3141474Smckusick #define CN_REMOTE 3 /* serial interface with remote bit set */ 3241474Smckusick 3341474Smckusick /* XXX */ 3441474Smckusick #define CONSMAJOR 0 3542365Smckusick 3642365Smckusick #ifdef KERNEL 3742365Smckusick extern struct consdev constab[]; 3842365Smckusick extern struct consdev *cn_tab; 3942365Smckusick extern struct tty *cn_tty; 4042365Smckusick #endif 41