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/* $Id:$ */
/*
* Copyright (c) 2008-2010 Aaron Turner.
* 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.
* 3. Neither the names of the copyright owners nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``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 THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include "config.h"
#include "defines.h"
#include "common.h"
#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_SYS_EVENT
#include <sys/event.h>
#endif
/* necessary for ioport_sleep() functions */
#ifdef HAVE_SYS_IO_H /* Linux */
#include <sys/io.h>
#elif defined HAVE_ARCHITECTURE_I386_PIO_H /* OS X */
#include <architecture/i386/pio.h>
#endif
float gettimeofday_sleep_value;
int ioport_sleep_value;
void
ioport_sleep_init(void)
{
#ifdef HAVE_IOPERM
ioperm(0x80,1,1);
ioport_sleep_value = inb(0x80);
#else
err(-1, "Platform does not support IO Port for timing");
#endif
}
void
ioport_sleep(const struct timespec nap)
{
#ifdef HAVE_IOPERM
struct timeval nap_for;
u_int32_t usec;
time_t i;
TIMESPEC_TO_TIMEVAL(&nap_for, &nap);
/*
* process the seconds, we do this in a loop so we don't have to
* use slower 64bit integers or worry about integer overflows.
*/
for (i = 0; i < nap_for.tv_sec; i ++) {
usec = SEC_TO_MICROSEC(nap_for.tv_sec);
while (usec > 0) {
usec --;
outb(ioport_sleep_value, 0x80);
}
}
/* process the usec */
usec = nap.tv_nsec / 1000;
usec --; /* fudge factor for all the above */
while (usec > 0) {
usec --;
outb(ioport_sleep_value, 0x80);
}
#else
err(-1, "Platform does not support IO Port for timing");
#endif
}
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