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- /* $Id:$ */
- /*
- * Copyright (c) 2008 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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