void
ioapic_set_legacy_irqmap(int irq, int gsi, enum intr_trigger trig,
enum intr_polarity pola)
{
struct ioapic_irqinfo *info;
struct ioapic_irqmap *map;
void *ioaddr;
int pin, cpuid;
KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
KKASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS);
if (irq > ioapic_abi_legacy_irq_max)
ioapic_abi_legacy_irq_max = irq;
cpuid = ioapic_abi_gsi_cpuid(irq, gsi);
map = &ioapic_irqmaps[cpuid][irq];
KKASSERT(map->im_type == IOAPIC_IMT_UNUSED);
map->im_type = IOAPIC_IMT_LEGACY;
map->im_gsi = gsi;
map->im_trig = trig;
map->im_pola = pola;
if (bootverbose) {
kprintf("IOAPIC: irq %d -> gsi %d %s/%s\n",
irq, map->im_gsi,
intr_str_trigger(map->im_trig),
intr_str_polarity(map->im_pola));
}
pin = ioapic_gsi_pin(map->im_gsi);
ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
info = &ioapic_irqs[irq];
imen_lock();
info->io_addr = ioaddr;
info->io_idx = IOAPIC_REDTBL + (2 * pin);
info->io_flags = IOAPIC_IRQI_FLAG_MASKED;
if (map->im_trig == INTR_TRIGGER_LEVEL)
info->io_flags |= IOAPIC_IRQI_FLAG_LEVEL;
ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
map->im_trig, map->im_pola, cpuid);
imen_unlock();
}
static void
ioapic_abi_legacy_intr_config(int irq, enum intr_trigger trig,
enum intr_polarity pola)
{
struct ioapic_irqinfo *info;
struct ioapic_irqmap *map = NULL;
void *ioaddr;
int pin, cpuid;
KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
KKASSERT(irq >= 0 && irq < ioapic_abi_legacy_irq_max);
for (cpuid = 0; cpuid < ncpus; ++cpuid) {
map = &ioapic_irqmaps[cpuid][irq];
if (map->im_type == IOAPIC_IMT_LEGACY)
break;
}
KKASSERT(cpuid < ncpus);
#ifdef notyet
if (map->im_flags & IOAPIC_IMF_CONF) {
if (trig != map->im_trig) {
panic("ioapic_intr_config: trig %s -> %s\n",
intr_str_trigger(map->im_trig),
intr_str_trigger(trig));
}
if (pola != map->im_pola) {
panic("ioapic_intr_config: pola %s -> %s\n",
intr_str_polarity(map->im_pola),
intr_str_polarity(pola));
}
return;
}
#endif
map->im_flags |= IOAPIC_IMF_CONF;
if (trig == map->im_trig && pola == map->im_pola)
return;
if (bootverbose) {
kprintf("IOAPIC: irq %d, gsi %d %s/%s -> %s/%s\n",
irq, map->im_gsi,
intr_str_trigger(map->im_trig),
intr_str_polarity(map->im_pola),
intr_str_trigger(trig),
intr_str_polarity(pola));
}
map->im_trig = trig;
map->im_pola = pola;
pin = ioapic_gsi_pin(map->im_gsi);
ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
info = &ioapic_irqs[irq];
imen_lock();
info->io_flags &= ~IOAPIC_IRQI_FLAG_LEVEL;
if (map->im_trig == INTR_TRIGGER_LEVEL)
info->io_flags |= IOAPIC_IRQI_FLAG_LEVEL;
ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
map->im_trig, map->im_pola, cpuid);
imen_unlock();
}
void
ioapic_set_legacy_irqmap(int irq, int gsi, enum intr_trigger trig,
enum intr_polarity pola)
{
struct ioapic_irqinfo *info;
struct ioapic_irqmap *map;
void *ioaddr;
int pin, cpuid;
KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
KKASSERT(irq >= 0);
if (irq >= IOAPIC_HWI_VECTORS) {
/*
* Some BIOSes seem to assume that all 256 IDT vectors
* could be used, while we limit the available IDT
* vectors to 192; find an unused IRQ for this GSI.
*/
irq = ioapic_find_unused_irqmap(gsi);
if (irq < 0) {
kprintf("failed to find unused irq for gsi %d, "
"overflow\n", gsi);
return;
}
}
KKASSERT(irq < IOAPIC_HWI_VECTORS);
cpuid = ioapic_abi_gsi_cpuid(irq, gsi);
map = &ioapic_irqmaps[cpuid][irq];
if (map->im_type != IOAPIC_IMT_UNUSED) {
/*
* There are so many IOAPICs, that 1:1 mapping
* of GSI and IRQ hits SYSCALL entry.
*/
irq = ioapic_find_unused_irqmap(gsi);
if (irq < 0) {
kprintf("failed to find unused irq for gsi %d, "
"conflict\n", gsi);
return;
}
KKASSERT(irq < IOAPIC_HWI_VECTORS);
cpuid = ioapic_abi_gsi_cpuid(irq, gsi);
map = &ioapic_irqmaps[cpuid][irq];
}
if (irq > ioapic_abi_legacy_irq_max)
ioapic_abi_legacy_irq_max = irq;
KKASSERT(map->im_type == IOAPIC_IMT_UNUSED);
map->im_type = IOAPIC_IMT_LEGACY;
map->im_gsi = gsi;
map->im_trig = trig;
map->im_pola = pola;
if (bootverbose) {
kprintf("IOAPIC: irq %d -> gsi %d %s/%s\n",
irq, map->im_gsi,
intr_str_trigger(map->im_trig),
intr_str_polarity(map->im_pola));
}
pin = ioapic_gsi_pin(map->im_gsi);
ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
info = &ioapic_irqs[irq];
imen_lock();
info->io_addr = ioaddr;
info->io_idx = IOAPIC_REDTBL + (2 * pin);
info->io_flags = IOAPIC_IRQI_FLAG_MASKED;
if (map->im_trig == INTR_TRIGGER_LEVEL)
info->io_flags |= IOAPIC_IRQI_FLAG_LEVEL;
ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
map->im_trig, map->im_pola, cpuid);
imen_unlock();
}
