Function clock_attach

freebsd/mips/mips/tick.c:331–381

}

static int
clock_attach(device_t dev)
{
	struct clock_softc *sc;
#ifndef INTRNG
	int error;
#endif

	if (device_get_unit(dev) != 0)
		panic("can't attach more clocks");

	softc = sc = device_get_softc(dev);
#ifdef INTRNG
	cpu_establish_hardintr("clock", clock_intr, NULL, sc, 5, INTR_TYPE_CLK,
	    NULL);
#else
	sc->intr_rid = 0;
	sc->intr_res = bus_alloc_resource(dev,
	    SYS_RES_IRQ, &sc->intr_rid, 5, 5, 1, RF_ACTIVE);
	if (sc->intr_res == NULL) {
		device_printf(dev, "failed to allocate irq\n");
		return (ENXIO);
	}
	error = bus_setup_intr(dev, sc->intr_res, INTR_TYPE_CLK,
	    clock_intr, NULL, sc, &sc->intr_handler);
	if (error != 0) {
		device_printf(dev, "bus_setup_intr returned %d\n", error);
		return (error);
	}
#endif

	sc->tc.tc_get_timecount = counter_get_timecount;
	sc->tc.tc_counter_mask = 0xffffffff;
	sc->tc.tc_frequency = counter_freq;
	sc->tc.tc_name = "MIPS32";
	sc->tc.tc_quality = 800;
	sc->tc.tc_priv = sc;
	tc_init(&sc->tc);
	sc->et.et_name = "MIPS32";
	sc->et.et_flags = ET_FLAGS_PERIODIC | ET_FLAGS_ONESHOT |
	    ET_FLAGS_PERCPU;
	sc->et.et_quality = 800;
	sc->et.et_frequency = counter_freq;
	sc->et.et_min_period = 0x00004000LLU; /* To be safe. */
	sc->et.et_max_period = (0xfffffffeLLU << 32) / sc->et.et_frequency;
	sc->et.et_start = clock_start;
	sc->et.et_stop = clock_stop;
	sc->et.et_priv = sc;
	et_register(&sc->et);
	return (0);
}

static device_method_t clock_methods[] = {
	/* Device interface */