/*ARGSUSED*/
int
wdogioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
{
int error = 0;
int request;
switch (cmd) {
case SIOWDOGSETMODE:
request = *(int *)data;
switch (request) {
case WDOGM_RESET:
wdog_wr_csr(SHREG_WTCSR_R | WTCSR_WT);
break;
case WDOGM_INTR:
wdog_wr_csr(SHREG_WTCSR_R & ~WTCSR_WT);
break;
default:
error = EINVAL;
break;
}
break;
case SIORESETWDOG:
wdog_wr_cnt(0); /* reset to zero */
break;
case SIOSTARTWDOG:
wdog_wr_csr(WTCSR_WT | WTCSR_CKS_4096);
wdog_wr_cnt(0); /* reset to zero */
wdog_wr_csr(SHREG_WTCSR_R | WTCSR_TME); /* start!!! */
break;
case SIOSTOPWDOG:
wdog_wr_csr(SHREG_WTCSR_R & ~WTCSR_TME); /* stop */
break;
case SIOSETWDOG:
request = *(int *)data;
if (request > 2) {
error = EINVAL;
break;
}
break;
default:
error = EINVAL;
break;
}
return (error);
}
int
wdogintr(void *arg)
{
struct trapframe *frame = arg;
wdog_wr_csr(SHREG_WTCSR_R & ~WTCSR_IOVF); /* clear overflow bit */
wdog_wr_cnt(0); /* reset to zero */
printf("wdog trapped: spc = %x\n", frame->tf_spc);
return (0);
}
int
sh4_clock_intr(void *arg) /* trap frame */
{
#if (NWDOG > 0)
uint32_t i;
i = (uint32_t)SHREG_WTCNT_R;
if (i > maxwdog)
maxwdog = i;
wdog_wr_cnt(0); /* reset to zero */
#endif
/* clear underflow status */
_reg_bclr_2(SH4_TCR0, TCR_UNF);
hardclock(arg);
return (1);
}
