void take_ctlr_irq(
struct bus_ctlr *ctlr)
{
int pic = ctlr->sysdep1;
if (intpri[pic] == 0) {
iunit[pic] = ctlr->unit;
ivect[pic] = ctlr->intr;
intpri[pic] = (int)ctlr->sysdep;
form_pic_mask();
} else {
printf("The device below will clobber IRQ %d.\n", pic);
printf("You have two devices at the same IRQ. This won't work.\n");
printf("Reconfigure your hardware and try again.\n");
while (1);
}
}
void take_dev_irq(
struct bus_device *dev)
{
int pic = (int)dev->sysdep1;
if (intpri[pic] == 0) {
iunit[pic] = dev->unit;
ivect[pic] = dev->intr;
intpri[pic] = (int)dev->sysdep;
form_pic_mask();
} else {
printf("The device below will clobber IRQ %d.\n", pic);
printf("You have two devices at the same IRQ.\n");
printf("This won't work. Reconfigure your hardware and try again.\n");
printf("%s%d: port = %x, spl = %d, pic = %d.\n",
dev->name, dev->unit, dev->address,
dev->sysdep, dev->sysdep1);
while (1);
}
}
void
clkstart(void)
{
unsigned char byte;
unsigned long s;
intpri[0] = SPLHI;
form_pic_mask();
s = sploff(); /* disable interrupts */
/* Since we use only timer 0, we program that.
* 8254 Manual specifically says you do not need to program
* timers you do not use
*/
outb(pitctl_port, pit0_mode);
clknumb = CLKNUM/hz;
byte = clknumb;
outb(pitctr0_port, byte);
byte = clknumb>>8;
outb(pitctr0_port, byte);
splon(s); /* restore interrupt state */
}
