Re: K8N-E Deluxe: No DMA on IDE Disks

[Thomas Steffen <steffen.list.account@gmail.com>]

On 4/20/05, Jim Wiggs <jim.wiggs@gmail.com> wrote:
>  Folks,
> 
>   I've got a box built on the ASUS K8N-E Deluxe motherboard, and I absolutely
> can not get DMA working on my hard drives.  I am running the Debian 2.6.11
> kernel, to which I have applied the fixes suggested at:
> 
>   http://download.nvidia.com/XFree86/nforce/1.0-0301/KnownProblems.html
> 
>   But no joy.  My only clue is that there are dmesg log messages which seem
> to suggest that by the time the NFORCE driver loads, the generic IDE drivers
> have already grabbed control of the ide interfaces (NFORCE3-250: "port 0x01f0
> already claimed by ide0").  But how do I prevent this from happening?  

I had the same problem, and I had to compile the DMA driver into the
kernel to get it working. It seems that some DMA drivers have to
activate DMA during the boot process.

Thomas