isabeep.c revision 1.9 
1/*	$NetBSD: isabeep.c,v 1.9 2007/10/17 19:56:50 garbled Exp $	*/
2
3/*
4 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22 *  School of Computer Science
23 *  Carnegie Mellon University
24 *  Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30#include <sys/cdefs.h>
31__KERNEL_RCSID(0, "$NetBSD: isabeep.c,v 1.9 2007/10/17 19:56:50 garbled Exp $");
32
33#include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
34
35#include <sys/types.h>
36#include <sys/param.h>
37#include <sys/time.h>
38#include <sys/systm.h>
39#include <sys/errno.h>
40#include <sys/device.h>
41#include <uvm/uvm_extern.h>
42
43#include <dev/isa/isavar.h>
44
45#include "pcppi.h"
46#if NPCPPI > 0
47#include <dev/isa/pcppivar.h>
48
49int isabeepmatch(struct device *, struct cfdata *, void *);
50void isabeepattach(struct device *, struct device *, void *);
51
52CFATTACH_DECL(isabeep, sizeof(struct device),
53    isabeepmatch, isabeepattach, NULL, NULL);
54
55static int ppi_attached;
56static pcppi_tag_t ppicookie;
57
58int
59isabeepmatch(struct device *parent, struct cfdata *match, void *aux)
60{
61	return (!ppi_attached);
62}
63
64void
65isabeepattach(struct device *parent, struct device *self, void *aux)
66{
67	aprint_normal("\n");
68
69	ppicookie = ((struct pcppi_attach_args *)aux)->pa_cookie;
70	ppi_attached = 1;
71}
72#endif
73
74void
75isabeep(int pitch, int period)
76{
77#if NPCPPI > 0
78	if (ppi_attached)
79		pcppi_bell(ppicookie, pitch, period, 0);
80#endif
81}
82