uart_regofs
bus_space_read_4((bas)->bst, (bas)->bsh, uart_regofs((bas), (reg)))
bus_space_write_4((bas)->bst, (bas)->bsh, uart_regofs((bas), (reg)), \
ret = bus_space_read_8(bas->bst, bas->bsh, uart_regofs(bas, reg));
ret = bus_space_read_4(bas->bst, bas->bsh, uart_regofs(bas, reg));
ret = bus_space_read_2(bas->bst, bas->bsh, uart_regofs(bas, reg));
ret = bus_space_read_1(bas->bst, bas->bsh, uart_regofs(bas, reg));
bus_space_write_8(bas->bst, bas->bsh, uart_regofs(bas, reg), value);
bus_space_write_4(bas->bst, bas->bsh, uart_regofs(bas, reg), value);
bus_space_write_2(bas->bst, bas->bsh, uart_regofs(bas, reg), value);
bus_space_write_1(bas->bst, bas->bsh, uart_regofs(bas, reg), value);
bus_space_read_4((bas)->bst, (bas)->bsh, uart_regofs(bas, reg))
bus_space_write_4((bas)->bst, (bas)->bsh, uart_regofs(bas, reg), value)
bus_space_read_4((bas)->bst, (bas)->bsh, uart_regofs(bas, reg))
bus_space_write_4((bas)->bst, (bas)->bsh, uart_regofs(bas, reg), value)