/*
* Initialize the microsecond clock.
*/
void init_usec_clock()
{
#ifdef _SEQUENT_
usclk_init();
#endif
}
VOID usc_init()
{
#if defined(MULTIMAX)
usc_multimax_timer = timer_init();
usc_MD_rollover_val = (usc_time_t) ((1<<usc_MD_timer_size)-1);
#define TIMER_FOUND "multimax"
#endif
#if defined(SYMMETRY) || defined(SYMMETRY_PTX)
unsigned long roll;
usclk_init();
roll = 1 << (usc_MD_timer_size-1);
usc_MD_rollover_val = (usc_time_t) (roll + roll - 1);
#define TIMER_FOUND "symmetry"
#endif
#if defined(TC_2000) || defined(TC_2000_TCMP)
unsigned long roll;
roll = 1 << (usc_MD_timer_size-1);
usc_MD_rollover_val = (usc_time_t) (roll + roll - 1);
#define TIMER_FOUND "tc2000 butterfly"
#endif
#if defined(IPSC860)
esize_t hwtime;
unsigned long ustime;
hwtime.shigh = hwtime.slow = ~0x0;
hwtime.shigh = (hwtime.shigh & 0x7) << (sizeof(long)*8-3);
hwtime.slow = ((hwtime.slow >> 3) & ~(0x7 << (sizeof(long)*8-3)))
| hwtime.shigh;
ustime = (unsigned long)hwtime.slow * 0.8;
usc_MD_rollover_val = (usc_time_t) ustime;
#define TIMER_FOUND "ipsc"
#endif
#if defined(NCUBE)
unsigned long roll;
roll = 1 << (usc_MD_timer_size-1);
usc_MD_rollover_val = (usc_time_t) (roll + roll - 1);
#define TIMER_FOUND "ncube"
#endif
#if defined(FX2800) || defined(FX2800_SWITCH)
struct hrcval temptime;
unsigned long roll;
hrcstamp(&temptime);
roll = 1 << ((sizeof(usc_time_t) * 8) - 1);
usc_MD_rollover_val = (usc_time_t) (roll + roll - 1);
#define TIMER_FOUND "Alliant fx2800"
#endif
#if defined(SUN) || defined(HP) || defined(DEC5000) || \
defined(SUN_SOLARIS) || defined(FREEBSD) || defined(LINUX) || \
defined(I86_SOLARIS) || defined(NETBSD) || \
defined(BALANCE) || \
defined(RS6000) || defined(IBM3090) || \
defined(NEXT) || defined(TITAN) || defined(GP_1000) || \
defined(KSR) || \
defined(MEIKO_CS2) || \
defined(SGI) || defined(FX8) || defined(CRAY)
struct timeval tp;
struct timezone tzp;
unsigned long roll;
#if defined(SUN_SOLARIS) && defined(USE_WIERDGETTIMEOFDAY)
gettimeofday(&tp);
#else
gettimeofday(&tp,&tzp);
#endif
roll = (usc_time_t) ((usc_time_t) 1 << ((sizeof(usc_time_t)*8)-1));
roll = roll + roll - 1;
usc_MD_rollover_val = (usc_time_t) (roll / 1000000);
#define TIMER_FOUND "gettimeofday"
#endif
#ifndef TIMER_FOUND
'Error - no timer defined. Please file a bug report'
#endif
}
