/*	$NetBSD: cons.h,v 1.9 2011/06/03 03:20:39 christos Exp $	*/

/*-
 * Copyright (c) 2000 Eduardo E. Horvath
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * PROM console driver.
 *
 * This is the default fallback console driver if nothing else attaches.
 */

struct pconssoftc {
	device_t of_dev;
	struct tty *of_tty;
	struct callout sc_poll_ch;
	int of_flags;
};
/* flags: */
#define	OFPOLL		1

#define	OFBURSTLEN	128	/* max number of bytes to write in one chunk */

void pcons_cnpollc(dev_t, int);

struct consdev;
struct zs_chanstate;

extern void *zs_conschan;

extern void nullcnprobe(struct consdev *);

extern int  zs_getc(void *arg);
extern void zs_putc(void *arg, int c);

/*
 * PROM I/O nodes and arguments are prepared by consinit().
 * Drivers can examine these when looking for a console device match.
 */
extern int prom_stdin_node;
extern int prom_stdout_node;
extern char prom_stdin_args[];	/* not used on sun4u */
extern char prom_stdout_args[];	/* not used on sun4u */