BI_NODE
nexaddr = (nexaddr & 0xff000000) + BI_NODE(ctlr);
if (bus_space_map(sc->sc_iot, sc->sc_addr + BI_NODE(nodenr),
#define BI_BASE(bi,nod) ((0x20000000 + (bi) * 0x2000000) + BI_NODE(nod))