Function octopci_alloc_resource

freebsd/mips/cavium/octopci.c:234–296

}

static struct resource *
octopci_alloc_resource(device_t bus, device_t child, int type, int *rid,
    rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
	struct octopci_softc *sc;
	struct resource *res;
	struct rman *rm;
	int error;

	sc = device_get_softc(bus);

	switch (type) {
	case SYS_RES_IRQ:
		res = bus_generic_alloc_resource(bus, child, type, rid, start,
		    end, count, flags);
		if (res != NULL)
			return (res);
		return (NULL);
	case SYS_RES_MEMORY:
		rm = &sc->sc_mem1;
		break;
	case SYS_RES_IOPORT:
		rm = &sc->sc_io;
		break;
	default:
		return (NULL);
	}

	res = rman_reserve_resource(rm, start, end, count, flags, child);
	if (res == NULL)
		return (NULL);

	rman_set_rid(res, *rid);
	rman_set_bustag(res, octopci_bus_space);

	switch (type) {
	case SYS_RES_MEMORY:
		rman_set_bushandle(res, sc->sc_mem1_base + rman_get_start(res));
		break;
	case SYS_RES_IOPORT:
		rman_set_bushandle(res, sc->sc_io_base + rman_get_start(res));
#if __mips_n64
		rman_set_virtual(res, (void *)rman_get_bushandle(res));
#else
		/*
		 * XXX
		 * We can't access ports via a 32-bit pointer.
		 */
		rman_set_virtual(res, NULL);
#endif
		break;
	}

	if ((flags & RF_ACTIVE) != 0) {
		error = bus_activate_resource(child, type, *rid, res);
		if (error != 0) {
			rman_release_resource(res);
			return (NULL);