Currently, the kernel contains drivers for the following SCSI host adapters: Adaptec 1542, Adaptec 1740, Future Domain TMC-1660/TMC-1680, Seagate ST-01/ST-02, UltraStor 14F, and Western Digital WD-7000. You may want to write your own driver for an unsupported host adapter. You may also want to re-write or update one of the existing drivers.