Messages in this thread | | | Date | Wed, 13 Aug 2003 10:24:36 -0400 | From | Jeff Garzik <> | Subject | Re: Promise SATA driver GPL'd |
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On Wed, Aug 13, 2003 at 03:34:37PM +0200, Vojtech Pavlik wrote: > On Wed, Jul 23, 2003 at 11:32:11AM +0100, Alan Cox wrote: > > On Mer, 2003-07-23 at 02:59, Andre Hedrick wrote: > > > I have already cut all ties with Promise so here is the deal. > > > I no longer have to count the number of fingers on my hand between hand > > > shakes. IE no extras and not shortages. > > > > Thats ok - now they are doing GPL drivers themselves they don't need > > you any more. > > > > Promise did a SCSI CAM driver because their hardware can queue commands > > without TCQ - which drivers/ide can't cope with. Otherwise I'd just have > > used the same type of changes the FreeBSD people did for 2037x. > > > > Its also interesting because it has a hardware XOR engine. > > I don't think it does. The Promise SATA150 SX4 is the one that has the > XOR engine (and the PDC20621 chip) and that one is not supported by the > driver.
hmm, the method of delivering ATA and XOR packets on Promise hardware are very, very similar. And pdc-ultra driver seems to have code to deliver XOR packets...
Jeff
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