/*
* cpu_initclocks:
*
* Initialize the clock and get them going.
*/
void
cpu_initclocks(void)
{
u_int oldirqstate;
#if 0
if (hz < 50 || COUNTS_PER_SEC % hz) {
printf("Cannot get %d Hz clock; using 100 Hz\n", hz);
hz = 100;
}
#endif
/*
* We only have one timer available; stathz and profhz are
* always left as 0 (the upper-layer clock code deals with
* this situation).
*/
if (stathz != 0)
printf("Cannot get %d Hz statclock\n", stathz);
stathz = 0;
if (profhz != 0)
printf("Cannot get %d Hz profclock\n", profhz);
profhz = 0;
/* Report the clock frequency. */
aprint_normal("clock: hz=%d stathz=%d profhz=%d\n", hz, stathz, profhz);
oldirqstate = disable_interrupts(I32_bit);
/* Hook up the clock interrupt handler. */
clock_ih = becc_intr_establish(ICU_TIMERA, IPL_CLOCK,
clockhandler, NULL);
if (clock_ih == NULL)
panic("cpu_initclocks: unable to register timer interrupt");
/* Set up the new clock parameters. */
/* Stop timer, clear interrupt */
BECC_CSR_WRITE(BECC_TSCRA, TSCRx_TIF);
counts_per_hz = COUNTS_PER_SEC / hz;
/* Set the timer preload value. */
BECC_CSR_WRITE(BECC_TPRA, counts_per_hz - 1);
/* ...and start it in motion. */
BECC_CSR_WRITE(BECC_TSCRA, TSCRx_TE | TSCRx_CM);
#ifdef __HAVE_FAST_SOFTINTS
/* register soft interrupt handler as well */
becc_intr_establish(ICU_SOFT, IPL_SOFTCLOCK, becc_softint, NULL);
#endif
restore_interrupts(oldirqstate);
tc_init(&becc_timecounter);
}
void *
becc_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
int (*func)(void *), void *arg)
{
return (becc_intr_establish(ih, ipl, func, arg));
}
