Re: ICH Intel PATA short cable override...

[Mark Lord]

Alan Cox wrote:
> On Tue, 4 Sep 2007 13:37:22 +0100
> "Daniel J Blueman" <daniel.blueman@xxxxxxxxx> wrote:
>
> > We see that in ata_piix.c, there is a whitelist for (laptop) Intel ICH
> > controllers with short cables, tied to specific vendor subsystem IDs.
> > Since my mini-ITX Ibase MI910F has the subsystem IDs specified as
> > Intel [1], this is unusable.
> >
> > I can't find another existing mechanism to add short cable
> > information, to allow UDMA/66 for my on-board CF socket.
>
> DMI is the other approach (if your box has sane responses to the
> dmidecode command we can do this). 

No, something more flexible is needed here.

For example, I have a Mini-ITX server here, which I personally have
equipped with a 3" 40W IDE cable that connects to a notebook drive.

The system currently uses UDMA just fine with the IDE drivers,
but I have not been able to convert it to use the (stock) libata drivers
because of this silly lack of end-user control.

We really need an override for this -- embedded folks would also apprecaate one.
Ditto for selecting transfer modes.

Cheers
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