Function pmu_attach

freebsd/arm/arm/pmu.c:101–160

}

int
pmu_attach(device_t dev)
{
	struct pmu_softc *sc;
#if defined(__arm__) && (__ARM_ARCH > 6)
	uint32_t iesr;
#endif
	int err, i;

	sc = device_get_softc(dev);
	sc->dev = dev;

	for (i = 0; i < MAX_RLEN; i++) {
		if (sc->irq[i].res == NULL)
			break;
		err = bus_setup_intr(dev, sc->irq[i].res,
		    INTR_MPSAFE | INTR_TYPE_MISC, pmu_intr, NULL, NULL,
		    &sc->irq[i].ih);
		if (err != 0) {
			device_printf(dev,
			    "Unable to setup interrupt handler.\n");
			goto fail;
		}
		if (sc->irq[i].cpuid != -1) {
			err = bus_bind_intr(dev, sc->irq[i].res,
			    sc->irq[i].cpuid);
			if (err != 0) {
				device_printf(sc->dev,
				    "Unable to bind interrupt.\n");
				goto fail;
			}
		}
	}

#if defined(__arm__) && (__ARM_ARCH > 6)
	/* Initialize to 0. */
	for (i = 0; i < MAXCPU; i++)
		ccnt_hi[i] = 0;

	/* Enable the interrupt to fire on overflow. */
	iesr = cp15_pminten_get();
	iesr |= PMU_IESR_C;
	cp15_pminten_set(iesr);

	/* Need this for getcyclecount() fast path. */
	pmu_attched |= 1;
#endif

	return (0);

fail:
	for (i = 1; i < MAX_RLEN; i++) {
		if (sc->irq[i].ih != NULL)
			bus_teardown_intr(dev, sc->irq[i].res, sc->irq[i].ih);
		if (sc->irq[i].res != NULL)
			bus_release_resource(dev, SYS_RES_IRQ, i,
			    sc->irq[i].res);
	}