int
apic_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
pci_chipset_tag_t pc = pa->pa_pc;
struct elroy_softc *sc = pc->_cookie;
pcitag_t tag = pa->pa_tag;
hppa_hpa_t hpa = cpu_gethpa(0);
pcireg_t reg;
reg = pci_conf_read(pc, tag, PCI_INTERRUPT_REG);
printf(" pin=%d line=%d ", PCI_INTERRUPT_PIN(reg), PCI_INTERRUPT_LINE(reg));
apic_write(sc->sc_regs, APIC_ENT0(PCI_INTERRUPT_PIN(reg)),
PCI_INTERRUPT_LINE(reg));
apic_write(sc->sc_regs, APIC_ENT1(PCI_INTERRUPT_PIN(reg)),
((hpa & 0x0ff00000) >> 4) | ((hpa & 0x000ff000) << 12));
*ihp = PCI_INTERRUPT_LINE(reg) + 1;
return (*ihp == 0);
}
void *
apic_intr_establish(void *v, pci_intr_handle_t ih,
int pri, int (*handler)(void *), void *arg, const char *name)
{
struct elroy_softc *sc = v;
volatile struct elroy_regs *r = sc->sc_regs;
hppa_hpa_t hpa = cpu_gethpa(0);
struct evcount *cnt;
struct apic_iv *aiv, *biv;
void *iv;
int irq = APIC_INT_IRQ(ih);
int line = APIC_INT_LINE(ih);
u_int32_t ent0;
/* no mapping or bogus */
if (irq <= 0 || irq > 63)
return (NULL);
aiv = malloc(sizeof(struct apic_iv), M_DEVBUF, M_NOWAIT);
if (aiv == NULL) {
free(cnt, M_DEVBUF, 0);
return NULL;
}
aiv->sc = sc;
aiv->ih = ih;
aiv->handler = handler;
aiv->arg = arg;
aiv->next = NULL;
aiv->cnt = NULL;
if (apic_intr_list[irq]) {
cnt = malloc(sizeof(struct evcount), M_DEVBUF, M_NOWAIT);
if (!cnt) {
free(aiv, M_DEVBUF, 0);
return (NULL);
}
evcount_attach(cnt, name, NULL);
biv = apic_intr_list[irq];
while (biv->next)
biv = biv->next;
biv->next = aiv;
aiv->cnt = cnt;
return (arg);
}
if ((iv = cpu_intr_establish(pri, irq, apic_intr, aiv, name))) {
ent0 = (63 - irq) & APIC_ENT0_VEC;
ent0 |= apic_get_int_ent0(sc, line);
#if 0
if (cold) {
sc->sc_imr |= (1 << irq);
ent0 |= APIC_ENT0_MASK;
}
#endif
apic_write(sc->sc_regs, APIC_ENT0(line), APIC_ENT0_MASK);
apic_write(sc->sc_regs, APIC_ENT1(line),
((hpa & 0x0ff00000) >> 4) | ((hpa & 0x000ff000) << 12));
apic_write(sc->sc_regs, APIC_ENT0(line), ent0);
/* Signal EOI. */
elroy_write32(&r->apic_eoi,
htole32((63 - irq) & APIC_ENT0_VEC));
apic_intr_list[irq] = aiv;
}
