void
acpi_sci_config(void)
{
const struct acpi_sci_mode *mode;
if (acpi_sci_irq < 0)
return;
if (acpi_sci_trig != INTR_TRIGGER_CONFORM) {
KKASSERT(acpi_sci_pola != INTR_POLARITY_CONFORM);
machintr_intr_config(acpi_sci_irq,
acpi_sci_trig, acpi_sci_pola);
return;
}
kprintf("ACPI FADT: SCI testing interrupt mode ...\n");
for (mode = acpi_sci_modes; mode->sci_trig != INTR_TRIGGER_CONFORM;
++mode) {
void *sci_desc;
long last_cnt;
FADT_VPRINTF("SCI testing %s/%s\n",
intr_str_trigger(mode->sci_trig),
intr_str_polarity(mode->sci_pola));
last_cnt = get_interrupt_counter(acpi_sci_irq);
machintr_intr_config(acpi_sci_irq,
mode->sci_trig, mode->sci_pola);
sci_desc = register_int(acpi_sci_irq,
acpi_sci_dummy_intr, NULL, "sci", NULL,
INTR_EXCL | INTR_CLOCK |
INTR_NOPOLL | INTR_MPSAFE | INTR_NOENTROPY);
DELAY(100 * 1000);
unregister_int(sci_desc);
if (get_interrupt_counter(acpi_sci_irq) - last_cnt < 20) {
acpi_sci_trig = mode->sci_trig;
acpi_sci_pola = mode->sci_pola;
kprintf("ACPI FADT: SCI select %s/%s\n",
intr_str_trigger(acpi_sci_trig),
intr_str_polarity(acpi_sci_pola));
return;
}
}
kprintf("ACPI FADT: no suitable interrupt mode for SCI, disable\n");
acpi_sci_irq = -1;
}
static int
nexus_config_intr(device_t bus, device_t chile, int irq,
enum intr_trigger trig, enum intr_polarity pola)
{
machintr_intr_config(irq, trig, pola);
return 0;
}
