diff options
Diffstat (limited to 'sys/amd64/include/ppireg.h')
-rw-r--r-- | sys/amd64/include/ppireg.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys/amd64/include/ppireg.h b/sys/amd64/include/ppireg.h new file mode 100644 index 0000000..5774757 --- /dev/null +++ b/sys/amd64/include/ppireg.h @@ -0,0 +1,49 @@ +/*- + * Copyright (C) 2005 TAKAHASHI Yoshihiro. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _MACHINE_PPIREG_H_ +#define _MACHINE_PPIREG_H_ + +#ifdef _KERNEL + +#define IO_PPI 0x61 /* Programmable Peripheral Interface */ + +/* + * PPI speaker control values + */ + +#define PIT_ENABLETMR2 0x01 /* Enable timer/counter 2 */ +#define PIT_SPKRDATA 0x02 /* Direct to speaker */ + +#define PIT_SPKR (PIT_ENABLETMR2 | PIT_SPKRDATA) + +#define ppi_spkr_on() outb(IO_PPI, inb(IO_PPI) | PIT_SPKR) +#define ppi_spkr_off() outb(IO_PPI, inb(IO_PPI) & ~PIT_SPKR) + +#endif /* _KERNEL */ + +#endif /* _MACHINE_PPIREG_H_ */ |