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      1 /*	$NetBSD: cons.h,v 1.9 2011/06/03 03:20:39 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 Eduardo E. Horvath
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 /*
     32  * PROM console driver.
     33  *
     34  * This is the default fallback console driver if nothing else attaches.
     35  */
     36 
     37 struct pconssoftc {
     38 	device_t of_dev;
     39 	struct tty *of_tty;
     40 	struct callout sc_poll_ch;
     41 	int of_flags;
     42 };
     43 /* flags: */
     44 #define	OFPOLL		1
     45 
     46 #define	OFBURSTLEN	128	/* max number of bytes to write in one chunk */
     47 
     48 void pcons_cnpollc(dev_t, int);
     49 
     50 struct consdev;
     51 struct zs_chanstate;
     52 
     53 extern void *zs_conschan;
     54 
     55 extern void nullcnprobe(struct consdev *);
     56 
     57 extern int  zs_getc(void *arg);
     58 extern void zs_putc(void *arg, int c);
     59 
     60 /*
     61  * PROM I/O nodes and arguments are prepared by consinit().
     62  * Drivers can examine these when looking for a console device match.
     63  */
     64 extern int prom_stdin_node;
     65 extern int prom_stdout_node;
     66 extern char prom_stdin_args[];	/* not used on sun4u */
     67 extern char prom_stdout_args[];	/* not used on sun4u */
     68 
     69