void *
isa_intr_establish(isa_chipset_tag_t ic, int irq, int type, int level,
int (*ih_fun)(void *), void *ih_arg)
{
struct pic *pic;
int pin;
#if NIOAPIC > 0
int mpih;
struct ioapic_softc *ioapic;
#endif
pin = irq;
pic = &i8259_pic;
#if NIOAPIC > 0
if (mp_busses != NULL) {
if (intr_find_mpmapping(mp_isa_bus, irq, &mpih) == 0 ||
intr_find_mpmapping(mp_eisa_bus, irq, &mpih) == 0) {
if (!APIC_IRQ_ISLEGACY(mpih)) {
pin = APIC_IRQ_PIN(mpih);
ioapic = ioapic_find(APIC_IRQ_APIC(mpih));
if (ioapic == NULL) {
printf("isa_intr_establish: "
"unknown apic %d\n",
APIC_IRQ_APIC(mpih));
return NULL;
}
pic = &ioapic->sc_pic;
}
} else
printf("isa_intr_establish: no MP mapping found\n");
}
#endif
return intr_establish(irq, pic, pin, type, level, ih_fun, ih_arg,
false);
}
int
pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
pci_intr_pin_t pin = pa->pa_intrpin;
pci_intr_line_t line = pa->pa_intrline;
pci_chipset_tag_t ipc, pc = pa->pa_pc;
#if NIOAPIC > 0 || NACPICA > 0
pci_intr_pin_t rawpin = pa->pa_rawintrpin;
int bus, dev, func;
#endif
for (ipc = pc; ipc != NULL; ipc = ipc->pc_super) {
if ((ipc->pc_present & PCI_OVERRIDE_INTR_MAP) == 0)
continue;
return (*ipc->pc_ov->ov_intr_map)(ipc->pc_ctx, pa, ihp);
}
if (pin == 0) {
/* No IRQ used. */
goto bad;
}
*ihp = 0;
if (pin > PCI_INTERRUPT_PIN_MAX) {
aprint_normal("pci_intr_map: bad interrupt pin %d\n", pin);
goto bad;
}
#if NIOAPIC > 0 || NACPICA > 0
KASSERT(rawpin >= PCI_INTERRUPT_PIN_A);
KASSERT(rawpin <= PCI_INTERRUPT_PIN_D);
pci_decompose_tag(pc, pa->pa_tag, &bus, &dev, &func);
if (mp_busses != NULL) {
/*
* Note: PCI_INTERRUPT_PIN_A == 1 where intr_find_mpmapping
* wants pci bus_pin encoding which uses INT_A == 0.
*/
if (intr_find_mpmapping(bus,
(dev << 2) | (rawpin - PCI_INTERRUPT_PIN_A), ihp) == 0) {
if (APIC_IRQ_LEGACY_IRQ(*ihp) == 0)
*ihp |= line;
return 0;
}
/*
* No explicit PCI mapping found. This is not fatal,
* we'll try the ISA (or possibly EISA) mappings next.
*/
}
#endif
/*
* Section 6.2.4, `Miscellaneous Functions', says that 255 means
* `unknown' or `no connection' on a PC. We assume that a device with
* `no connection' either doesn't have an interrupt (in which case the
* pin number should be 0, and would have been noticed above), or
* wasn't configured by the BIOS (in which case we punt, since there's
* no real way we can know how the interrupt lines are mapped in the
* hardware).
*
* XXX
* Since IRQ 0 is only used by the clock, and we can't actually be sure
* that the BIOS did its job, we also recognize that as meaning that
* the BIOS has not configured the device.
*/
if (line == 0 || line == X86_PCI_INTERRUPT_LINE_NO_CONNECTION) {
aprint_normal("pci_intr_map: no mapping for pin %c (line=%02x)\n",
'@' + pin, line);
goto bad;
} else {
if (line >= NUM_LEGACY_IRQS) {
aprint_normal("pci_intr_map: bad interrupt line %d\n", line);
goto bad;
}
if (line == 2) {
aprint_normal("pci_intr_map: changed line 2 to line 9\n");
line = 9;
}
}
#if NIOAPIC > 0 || NACPICA > 0
if (mp_busses != NULL) {
if (intr_find_mpmapping(mp_isa_bus, line, ihp) == 0) {
if ((*ihp & 0xff) == 0)
*ihp |= line;
return 0;
}
#if NEISA > 0
if (intr_find_mpmapping(mp_eisa_bus, line, ihp) == 0) {
if ((*ihp & 0xff) == 0)
*ihp |= line;
return 0;
}
#endif
aprint_normal("pci_intr_map: bus %d dev %d func %d pin %d; line %d\n",
bus, dev, func, pin, line);
aprint_normal("pci_intr_map: no MP mapping found\n");
}
#endif
*ihp = line;
return 0;
bad:
*ihp = -1;
return 1;
}
int
pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
int pin;
int line;
#if NIOAPIC > 0
int rawpin = pa->pa_rawintrpin;
pci_chipset_tag_t pc = pa->pa_pc;
int bus, dev, func;
#endif
pin = pa->pa_intrpin;
line = pa->pa_intrline;
#if 0 /* XXXX why is it always 0 ? */
if (pin == 0) {
/* No IRQ used */
goto bad;
}
#endif
if (pin > PCI_INTERRUPT_PIN_MAX) {
printf("pci_intr_map: bad interrupt pin %d\n", pin);
goto bad;
}
ihp->pirq = 0;
#if NIOAPIC > 0
pci_decompose_tag(pc, pa->pa_tag, &bus, &dev, &func);
if (mp_busses != NULL) {
if (intr_find_mpmapping(bus, (dev<<2)|(rawpin-1), ihp) == 0) {
if (ihp->pirq & APIC_INT_VIA_APIC) {
/* make sure a new IRQ will be allocated */
ihp->pirq &= ~0xff;
} else {
ihp->pirq |= line;
}
goto end;
}
/*
* No explicit PCI mapping found. This is not fatal,
* we'll try the ISA (or possibly EISA) mappings next.
*/
}
#endif
if (line == 0 || line == X86_PCI_INTERRUPT_LINE_NO_CONNECTION) {
printf("pci_intr_map: no mapping for pin %c (line=%02x)\n",
'@' + pin, line);
goto bad;
}
#ifdef DOM0OPS
if (line >= NUM_LEGACY_IRQS) {
printf("pci_intr_map: bad interrupt line %d\n", line);
goto bad;
}
#endif
if (line == 2) {
printf("pci_intr_map: changed line 2 to line 9\n");
line = 9;
}
#if NIOAPIC > 0
if (mp_busses != NULL) {
if (intr_find_mpmapping(mp_isa_bus, line, ihp) == 0) {
if ((ihp->pirq & 0xff) == 0)
ihp->pirq |= line;
goto end;
}
printf("pci_intr_map: bus %d dev %d func %d pin %d; line %d\n",
bus, dev, func, pin, line);
printf("pci_intr_map: no MP mapping found\n");
}
#endif /* NIOAPIC */
ihp->pirq = line;
#if NIOAPIC > 0
end:
#endif
ihp->evtch = xen_intr_map(&ihp->pirq, IST_LEVEL);
if (ihp->evtch == -1)
goto bad;
return 0;
bad:
ihp->pirq = -1;
ihp->evtch = -1;
return 1;
}
int
pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
int pin = pa->pa_intrpin;
int line = pa->pa_intrline;
#if NIOAPIC > 0
int rawpin = pa->pa_rawintrpin;
pci_chipset_tag_t pc = pa->pa_pc;
int bus, dev, func;
int mppin;
#endif
if (pin == 0) {
/* No IRQ used. */
goto bad;
}
if (pin > PCI_INTERRUPT_PIN_MAX) {
printf("pci_intr_map: bad interrupt pin %d\n", pin);
goto bad;
}
#if NIOAPIC > 0
pci_decompose_tag(pc, pa->pa_tag, &bus, &dev, &func);
if (mp_busses != NULL) {
mppin = (dev << 2)|(rawpin - 1);
if (intr_find_mpmapping(bus, mppin, ihp) == 0) {
*ihp |= line;
return 0;
}
if (pa->pa_bridgetag) {
int bridgebus, bridgedev;
pci_decompose_tag(pc, *pa->pa_bridgetag,
&bridgebus, &bridgedev, NULL);
mppin = (bridgedev << 2)|((rawpin + dev - 1) & 0x3);
if (intr_find_mpmapping(bridgebus, mppin, ihp) == 0) {
*ihp |= line;
return 0;
}
}
/*
* No explicit PCI mapping found. This is not fatal,
* we'll try the ISA (or possibly EISA) mappings next.
*/
}
#endif
/*
* Section 6.2.4, `Miscellaneous Functions', says that 255 means
* `unknown' or `no connection' on a PC. We assume that a device with
* `no connection' either doesn't have an interrupt (in which case the
* pin number should be 0, and would have been noticed above), or
* wasn't configured by the BIOS (in which case we punt, since there's
* no real way we can know how the interrupt lines are mapped in the
* hardware).
*
* XXX
* Since IRQ 0 is only used by the clock, and we can't actually be sure
* that the BIOS did its job, we also recognize that as meaning that
* the BIOS has not configured the device.
*/
if (line == 0 || line == X86_PCI_INTERRUPT_LINE_NO_CONNECTION) {
printf("pci_intr_map: no mapping for pin %c (line=%02x)\n",
'@' + pin, line);
goto bad;
} else {
if (line >= NUM_LEGACY_IRQS) {
printf("pci_intr_map: bad interrupt line %d\n", line);
goto bad;
}
if (line == 2) {
printf("pci_intr_map: changed line 2 to line 9\n");
line = 9;
}
}
#if NIOAPIC > 0
if (mp_busses != NULL) {
if (mp_isa_bus != NULL &&
intr_find_mpmapping(mp_isa_bus->mb_idx, line, ihp) == 0) {
*ihp |= line;
return 0;
}
#if NEISA > 0
if (mp_eisa_bus != NULL &&
intr_find_mpmapping(mp_eisa_bus->mb_idx, line, ihp) == 0) {
*ihp |= line;
return 0;
}
#endif
printf("pci_intr_map: bus %d dev %d func %d pin %d; line %d\n",
bus, dev, func, pin, line);
printf("pci_intr_map: no MP mapping found\n");
}
#endif
*ihp = line;
return 0;
bad:
*ihp = -1;
return 1;
}
