BHA_ISA_IOSIZE
bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2)) {
bus_space_unmap(iot, ioh2, BHA_ISA_IOSIZE);
bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2))
ia->ia_io[0].ir_size = BHA_ISA_IOSIZE;
if (bus_space_map(iot, ia->ia_io[0].ir_addr, BHA_ISA_IOSIZE, 0, &ioh)) {
if (bus_space_map(iot, ia->ia_io[0].ir_addr, BHA_ISA_IOSIZE, 0, &ioh))
bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE);