Function its_init_cpu

freebsd/arm64/arm64/gicv3_its.c:697–738

}

static int
its_init_cpu(device_t dev, struct gicv3_its_softc *sc)
{
	device_t gicv3;
	vm_paddr_t target;
	u_int cpuid;
	struct redist_pcpu *rpcpu;

	gicv3 = device_get_parent(dev);
	cpuid = PCPU_GET(cpuid);
	if (!CPU_ISSET(cpuid, &sc->sc_cpus))
		return (0);

	/* Check if the ITS is enabled on this CPU */
	if ((gic_r_read_4(gicv3, GICR_TYPER) & GICR_TYPER_PLPIS) == 0)
		return (ENXIO);

	rpcpu = gicv3_get_redist(dev);

	/* Do per-cpu LPI init once */
	if (!rpcpu->lpi_enabled) {
		its_init_cpu_lpi(dev, sc);
		rpcpu->lpi_enabled = true;
	}

	if ((gic_its_read_8(sc, GITS_TYPER) & GITS_TYPER_PTA) != 0) {
		/* This ITS wants the redistributor physical address */
		target = vtophys(rman_get_virtual(&rpcpu->res));
	} else {
		/* This ITS wants the unique processor number */
		target = GICR_TYPER_CPUNUM(gic_r_read_8(gicv3, GICR_TYPER)) <<
		    CMD_TARGET_SHIFT;
	}

	sc->sc_its_cols[cpuid]->col_target = target;
	sc->sc_its_cols[cpuid]->col_id = cpuid;

	its_cmd_mapc(dev, sc->sc_its_cols[cpuid], 1);
	its_cmd_invall(dev, sc->sc_its_cols[cpuid]);

	return (0);
}

static int
gicv3_its_sysctl_trace_enable(SYSCTL_HANDLER_ARGS)