Linux: Improving The Promise SX4 Driver
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Jeff Garzik noted that the hardware documentation for the Promise SX4 chipset is being opened up and therefor 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. Jeff went on to explain:"A key problem is that, under Linux, sata_sx4 cannot fully exploit the RAID-centric power of this hardware by driving the hardware in'dumb ATA mode' as it does.
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