“Jeff Garzik noted that the hardware documentation for the
Promise SX4 chipset is being opened up and therefore the sata_sx4
driver is a good candidate for improvements, ‘I would like to take
this opportunity to point hackers looking for a project at this
hardware. The Promise SX4 is pretty neat, and it needs more
attention than I can give, to reach its full potential.’ He notes
that it is an older chipset that’s probably not sold anymore, that
the ATA programming interface is similar to that in the
sata_promise driver, and that it contains a fully programmable on
board DIMM and on board RAID5 XOR…”