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/*
* Copyright (c) 1997-1998 University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
/*
* Timer support specific to x86/pc programmable interval timer
* This header file contains all parameters
*/
#ifndef _DEV_X86_PIT_PARAM_H_
#define _DEV_X86_PIT_PARAM_H_
#include <oskit/time.h>
#include <oskit/x86/pio.h>
#include <oskit/x86/proc_reg.h>
#include <oskit/x86/pc/pit.h>
/*
* for now, we have a clock with these parameters
*/
#define TIMER_FREQ 100
#define TIMER_VALUE (PIT_HZ / TIMER_FREQ)
/* one clock tick is 10M nanoseconds */
#define NANOPERTICK 10000000
#define TIMESPEC2TICKS(t) ((t)->tv_sec * TIMER_FREQ + \
(((t)->tv_nsec + NANOPERTICK - 1) / NANOPERTICK))
#define TICKS2TIMESPEC(ti, ts) { \
(ts)->tv_sec = (ti)/TIMER_FREQ; \
(ts)->tv_nsec = ((ti) % TIMER_FREQ) * NANOPERTICK; \
}
#endif /* _DEV_X86_PIT_PARAM_H_ */
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