sysbeep_isa.c revision 1.11 
1/*	$NetBSD: sysbeep_isa.c,v 1.11 2012/10/27 17:17:38 chs 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: sysbeep_isa.c,v 1.11 2012/10/27 17:17:38 chs Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/device.h>
38#include <dev/isa/isavar.h>
39
40#include <dev/isa/pcppivar.h>
41
42/* Prototypes */
43int sysbeep_isa_match(device_t, cfdata_t, void *);
44void sysbeep_isa_attach(device_t, device_t, void *);
45void sysbeep_isa(int, int);
46
47/* device attach structure */
48CFATTACH_DECL_NEW(sysbeep_isa, 0,
49    sysbeep_isa_match, sysbeep_isa_attach, NULL, NULL);
50
51static int ppi_attached;
52static pcppi_tag_t ppicookie;
53
54int
55sysbeep_isa_match(device_t parent, cfdata_t match, void *aux)
56{
57	return (!ppi_attached);
58}
59
60void
61sysbeep_isa_attach(device_t parent, device_t self, void *aux)
62{
63	aprint_normal("\n");
64
65	ppicookie = ((struct pcppi_attach_args *)aux)->pa_cookie;
66	ppi_attached = 1;
67}
68
69void
70sysbeep(int pitch, int period)
71{
72	if (ppi_attached)
73		pcppi_bell(ppicookie, pitch, period, 0);
74}
75