skiconsole.c revision 225736 
11553Srgrimes/*-
21553Srgrimes * Copyright (c) 2000 Doug Rabson
31553Srgrimes * All rights reserved.
41553Srgrimes *
51553Srgrimes * Redistribution and use in source and binary forms, with or without
61553Srgrimes * modification, are permitted provided that the following conditions
71553Srgrimes * are met:
81553Srgrimes * 1. Redistributions of source code must retain the above copyright
91553Srgrimes *    notice, this list of conditions and the following disclaimer.
101553Srgrimes * 2. Redistributions in binary form must reproduce the above copyright
111553Srgrimes *    notice, this list of conditions and the following disclaimer in the
121553Srgrimes *    documentation and/or other materials provided with the distribution.
131553Srgrimes *
141553Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
151553Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
161553Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
171553Srgrimes * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
181553Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
191553Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
201553Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
211553Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
221553Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
231553Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
241553Srgrimes * SUCH DAMAGE.
251553Srgrimes */
261553Srgrimes
271553Srgrimes#include <sys/cdefs.h>
281553Srgrimes__FBSDID("$FreeBSD: stable/9/sys/boot/ia64/ski/skiconsole.c 113038 2003-04-03 21:36:33Z obrien $");
291553Srgrimes
301553Srgrimes#include <stand.h>
311553Srgrimes
321553Srgrimes#include "bootstrap.h"
331553Srgrimes#include "libski.h"
341553Srgrimes
351553Srgrimesstatic void
361553Srgrimesski_cons_probe(struct console *cp)
371553Srgrimes{
381553Srgrimes	cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
391553Srgrimes}
401553Srgrimes
411553Srgrimesstatic int
421553Srgrimesski_cons_init(int arg)
431553Srgrimes{
441553Srgrimes	ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
451553Srgrimes	return 0;
461553Srgrimes}
471553Srgrimes
481553Srgrimesvoid
491553Srgrimesski_cons_putchar(int c)
501553Srgrimes{
511553Srgrimes	ssc(c, 0, 0, 0, SSC_PUTCHAR);
521553Srgrimes}
531553Srgrimes
54static int pollchar = -1;
55
56int
57ski_cons_getchar()
58{
59	int c;
60
61	if (pollchar > 0) {
62		c = pollchar;
63		pollchar = -1;
64		return c;
65	}
66
67	do {
68		c = ssc(0, 0, 0, 0, SSC_GETCHAR);
69	} while (c == 0);
70
71	return c;
72}
73
74int
75ski_cons_poll()
76{
77	int c;
78	if (pollchar > 0)
79		return 1;
80	c = ssc(0, 0, 0, 0, SSC_GETCHAR);
81	if (!c)
82		return 0;
83	pollchar = c;
84	return 1;
85}
86
87struct console ski_console = {
88	"ski",
89	"ia64 SKI console",
90	0,
91	ski_cons_probe,
92	ski_cons_init,
93	ski_cons_putchar,
94	ski_cons_getchar,
95	ski_cons_poll
96};
97