sysbeep_isa.c revision 1.4 
1/*	$NetBSD: sysbeep_isa.c,v 1.4 2002/10/02 15:45:10 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Mark Brinicombe of Causality Limited.
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 NetBSD
21 *	Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/device.h>
42#include <dev/isa/isavar.h>
43
44#include <dev/isa/pcppivar.h>
45
46/* Prototypes */
47int sysbeep_isa_match __P((struct device *parent, struct cfdata *cf, void *aux));
48void sysbeep_isa_attach __P((struct device *parent, struct device *self, void *aux));
49void sysbeep_isa __P((int pitch, int period));
50
51/* device attach structure */
52CFATTACH_DECL(sysbeep_isa, sizeof(struct device),
53    sysbeep_isa_match, sysbeep_isa_attach, NULL, NULL);
54
55static int ppi_attached;
56static pcppi_tag_t ppicookie;
57
58int
59sysbeep_isa_match(parent, match, aux)
60	struct device *parent;
61	struct cfdata *match;
62	void *aux;
63{
64	return (!ppi_attached);
65}
66
67void
68sysbeep_isa_attach(parent, self, aux)
69	struct device *parent, *self;
70	void *aux;
71{
72	printf("\n");
73
74	ppicookie = ((struct pcppi_attach_args *)aux)->pa_cookie;
75	ppi_attached = 1;
76}
77
78void
79sysbeep(pitch, period)
80	int pitch, period;
81{
82	if (ppi_attached)
83		pcppi_bell(ppicookie, pitch, period, 0);
84}
85