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_ */
Cache object: b96a46a8c1a0837fe8ae34226b8ea53c
|