1/*-
2 * Copyright (C) 2005 TAKAHASHI Yoshihiro. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28#ifndef _MACHINE_PPIREG_H_
29#define _MACHINE_PPIREG_H_
30
31#ifdef _KERNEL
32
33#define	IO_PPI		0x61	/* Programmable Peripheral Interface */
34
35/*
36 * PPI speaker control values
37 */
38
39#define	PIT_ENABLETMR2	0x01	/* Enable timer/counter 2 */
40#define	PIT_SPKRDATA	0x02	/* Direct to speaker */
41
42#define	PIT_SPKR	(PIT_ENABLETMR2 | PIT_SPKRDATA)
43
44#define	ppi_spkr_on()	outb(IO_PPI, inb(IO_PPI) | PIT_SPKR)
45#define	ppi_spkr_off()	outb(IO_PPI, inb(IO_PPI) & ~PIT_SPKR)
46
47#endif /* _KERNEL */
48
49#endif /* _MACHINE_PPIREG_H_ */
50