int
joy_get_tick()
{
int low, high;
isa_outb(IO_TIMER1 + TIMER_MODE, TIMER_SEL0);
low = isa_inb(IO_TIMER1 + TIMER_CNTR0);
high = isa_inb(IO_TIMER1 + TIMER_CNTR0);
return (high << 8) | low;
}
void
sysbeep(int pitch, int period)
{
static callout_t sysbeep_ch;
static int last_pitch;
static bool again;
int s;
if (!again) {
callout_init(&sysbeep_ch, 0);
again = true;
}
if (beeping)
callout_stop(&sysbeep_ch);
if (pitch == 0 || period == 0) {
sysbeepstop(0);
last_pitch = 0;
return;
}
if (!beeping || last_pitch != pitch) {
s = splhigh(); /* FIXME */
isa_outb(IO_TIMER1 + TIMER_MODE,
TIMER_SEL2 | TIMER_16BIT | TIMER_SQWAVE);
isa_outb(IO_TIMER1 + TIMER_CNTR2, TIMER_DIV(pitch) % 256);
isa_outb(IO_TIMER1 + TIMER_CNTR2, TIMER_DIV(pitch) / 256);
isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) | PIT_SPKR); /* enable counter 2 */
splx(s);
}
last_pitch = pitch;
beeping = 1;
callout_reset(&sysbeep_ch, period, sysbeepstop, NULL);
}
static void
prepivr_establish_irq(struct pic_ops *pic, int irq, int type, int maxlevel)
{
u_int8_t elcr[2];
int icu, bit;
icu = irq / 8;
bit = irq % 8;
elcr[0] = isa_inb(IO_ELCR1);
elcr[1] = isa_inb(IO_ELCR2);
if (type == IST_LEVEL)
elcr[icu] |= 1 << bit;
else
elcr[icu] &= ~(1 << bit);
isa_outb(IO_ELCR1, elcr[0]);
isa_outb(IO_ELCR2, elcr[1]);
}
void
sysbeepstop(void *arg)
{
int s;
/* disable counter 2 */
s = splhigh(); /* FIXME */
isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) & ~PIT_SPKR);
splx(s);
beeping = 0;
}
int
isabr_dti_intr_status(void)
{
int isa_vector;
char vector;
isa_outb(IO_ICU1, 0x0f); /* Poll */
vector = isa_inb(IO_ICU1);
isa_vector = vector & 7;
if (vector > 0 || isa_vector == 2) {
isa_outb(IO_ICU2, 0x0f);
vector = isa_inb(IO_ICU2);
if (vector > 0) {
printf("isabr_dti_intr_status: spurious interrupt\n");
return -1;
}
isa_vector = (vector & 7) | 8;
}
return isa_vector;
}
int
isabr_dti_intr_status()
{
int isa_vector;
char vector;
isa_outb(IO_ICU1, 0x0f); /* Poll */
vector = isa_inb(IO_ICU1);
if (vector < 0) /* XXX: OpenBSD source had a bug, re-look this */
return (-1);
isa_vector = vector & 7;
if (isa_vector == 2) {
isa_outb(IO_ICU2, 0x0f);
vector = isa_inb(IO_ICU2);
if (vector > 0) {
printf("isa: spurious interrupt.\n");
return (-1);
}
isa_vector = (vector & 7) | 8;
}
return (isa_vector);
}