Date: Mon, 26 Feb 2001 20:18:00 +0100
From: David Balazic <david.balazic@uni-mb.si>
Subject: Re: ide / usb problem
To: linux-kernel@vger.kernel.org, jdinardo@ix.netcom.com
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jerry (jdinardo@ix.netcom.com)>    I also am using the cable supplied with the mobo (Abit kt7) so I
do not
> think it is ASUS specific. More likey it is releated to the
> VIA chipset and/or driver.
> 
> If I compile kernel with "Generic PCI bus-master DMA support"
> and run "hdparm -d1 /dev/hda" I get 700% performance increase  
> on hdparm -t benchmark and I do not get any dma BadCRC errors.
>            
> It is only when I also compile in the VIA82CXXX option that I get the
>     "hda: dma_intr:status=0x51 { DriveReady SeekComplete Error }"
>     "hda: dma_intr:error=0x84 { DriveStatusError BadCRC }"
> mesages (1000's of them).
> 
> Whether I get the messages or not, if I have dma enabled with 2.4.2
> my usb mouse stops working .

If you use the VIA IDE driver, then you _must_ turn on
the "Automatically enable DMA for PCI-IDE" kernel configuration
option. It is said in the help text for the VIA-IDE option.


-- 
David Balazic
--------------
"Be excellent to each other." - Bill & Ted
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