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From: Daan Goedkoop <dgoedkoop@gmx.net>
To: freebsd-hardware@freebsd.org
Date: Sat, 3 Apr 2004 14:11:28 +0200
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Subject: VIA 82C586B UDMA33 controller
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Hello,

It was posted before, I think, but I have a problem with my VIA IDE 
controller. When using it in DMA mode, constantly write timeouts occur, and 
that happens more and more as time passes.

The dmesg line is this:

atapci0: <VIA 82C586B UDMA33 controller> port 0xffa0-0xffaf at device 7.1 on 
pci0

I can use hw.ata.ata_dma=0, indeed, and that is what I am using now. However, 
this is not completely satisfactory, as Windows, Linux, NetBSD and OpenBSD do 
support UDMA33 without problems.

Daan.