It seems Richard Seaman, Jr. wrote:
> On Mon, Dec 06, 1999 at 12:19:16PM +0200, Vallo Kallaste wrote:
>
> > It doesn't know about SiS 5591 PCI IDE controller, the wdc controller
> > knows. I'm speaking about boot messages, nothing else. Furthermore the
> > wdc driver sets up UDMA mode on my UDMA capable disks, ata driver
> > doesn't. It claims that busmastering DMA is supported and sets up WDMA2
> > mode instead, I think it's normal as it currently doesn't know about
> > 5591. The WDMA2 isn't really that bad and otherwise I'm using ata driver
> > quite happily. Just FYI.
>
> The one time I tried ata with my SiS 5591 board I got PIO, no
> DMA at all. With wd I get UDMA. This was about 2-3 weeks ago.
The SiS is supported, depending on how the BIOS sets up the chip
the ata driver will do at max wdma2 transfers.
I hope to have support before 4.0, are you guys willing to test
some patches, they might hose your disks, you have been warned :)
-Søren
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