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: releng/10.3/sys/pc98/include/ppireg.h 146211 2005-05-14 09:10:02Z nyan $ 26 */ 27 28#ifndef _MACHINE_PPIREG_H_ 29#define _MACHINE_PPIREG_H_ 30 31#ifdef _KERNEL 32 33#define IO_PPI 0x35 /* Programmable Peripheral Interface */ 34 35/* 36 * PPI speaker control values 37 */ 38 39#define PIT_ENABLETMR1 0x08 /* Enable timer/counter 1 */ 40 41#define PIT_SPKR (PIT_ENABLETMR1) 42 43#define ppi_spkr_on() outb(IO_PPI, inb(IO_PPI) & ~PIT_SPKR) 44#define ppi_spkr_off() outb(IO_PPI, inb(IO_PPI) | PIT_SPKR) 45 46#endif /* _KERNEL */ 47 48#endif /* _MACHINE_PPIREG_H_ */ 49