void *
jensenio_eisa_intr_establish(void *v, int irq, int type, int level,
int (*fn)(void *), void *arg)
{
void *cookie;
if (irq >= JENSEN_MAX_IRQ || type == IST_NONE)
panic("jensenio_eisa_intr_establish: bogus irq or type");
if (jensenio_intr_deftype[irq] == IST_UNUSABLE) {
printf("jensenio_eisa_intr_establish: IRQ %d not usable\n",
irq);
return (NULL);
}
cookie = alpha_shared_intr_establish(jensenio_eisa_intr, irq,
type, level, fn, arg, "eisa irq");
if (cookie != NULL &&
alpha_shared_intr_firstactive(jensenio_eisa_intr, irq)) {
scb_set(0x800 + SCB_IDXTOVEC(irq), jensenio_iointr, NULL,
level);
jensenio_setlevel(irq,
alpha_shared_intr_get_sharetype(jensenio_eisa_intr,
irq) == IST_LEVEL);
jensenio_enable_intr(irq, 1);
}
return (cookie);
}
void *
jensenio_eisa_intr_establish(void *v, int irq, int type, int level,
int (*fn)(void *), void *arg)
{
void *cookie;
if (irq > 19 || type == IST_NONE)
panic("jensenio_eisa_intr_establish: bogus irq or type");
if (jensenio_intr_deftype[irq] == IST_UNUSABLE) {
printf("jensenio_eisa_intr_establish: IRQ %d not usable\n",
irq);
return (NULL);
}
cookie = alpha_shared_intr_establish(jensenio_eisa_intr, irq,
type, level, fn, arg, "eisa irq");
if (JENSEN_IRQ_IS_EISA(irq) == 0)
return (cookie);
if (cookie != NULL &&
alpha_shared_intr_isactive(jensenio_eisa_intr, irq)) {
jensenio_setlevel(irq,
alpha_shared_intr_get_sharetype(jensenio_eisa_intr,
irq) == IST_LEVEL);
jensenio_enable_intr(irq, 1);
}
return (cookie);
}
void
jensenio_intr_init(struct jensenio_config *jcp)
{
eisa_chipset_tag_t ec = &jcp->jc_ec;
isa_chipset_tag_t ic = &jcp->jc_ic;
char *cp;
int i;
pic_iot = &jcp->jc_eisa_iot;
jensenio_pic_init();
jensenio_eisa_intr = alpha_shared_intr_alloc(JENSEN_MAX_IRQ, 16);
for (i = 0; i < JENSEN_MAX_IRQ; i++) {
alpha_shared_intr_set_dfltsharetype(jensenio_eisa_intr,
i, jensenio_intr_deftype[i]);
/* Don't bother with stray interrupts. */
alpha_shared_intr_set_maxstrays(jensenio_eisa_intr,
i, 0);
cp = alpha_shared_intr_string(jensenio_eisa_intr, i);
sprintf(cp, "irq %d", i);
evcnt_attach_dynamic(alpha_shared_intr_evcnt(
jensenio_eisa_intr, i), EVCNT_TYPE_INTR,
NULL, "eisa", cp);
}
/*
* The cascasde interrupt must be edge triggered and always enabled.
*/
jensenio_setlevel(2, 0);
jensenio_enable_intr(2, 1);
/*
* Initialize the EISA chipset.
*/
ec->ec_v = jcp;
ec->ec_intr_map = jensenio_eisa_intr_map;
ec->ec_intr_string = jensenio_eisa_intr_string;
ec->ec_intr_evcnt = jensenio_eisa_intr_evcnt;
ec->ec_intr_establish = jensenio_eisa_intr_establish;
ec->ec_intr_disestablish = jensenio_eisa_intr_disestablish;
/*
* Initialize the ISA chipset.
*/
ic->ic_v = jcp;
ic->ic_intr_establish = jensenio_eisa_intr_establish;
ic->ic_intr_disestablish = jensenio_eisa_intr_disestablish;
ic->ic_intr_alloc = jensenio_eisa_intr_alloc;
ic->ic_intr_evcnt = jensenio_eisa_intr_evcnt;
}
