示例#1
0
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;
}
示例#2
0
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;
}