Re: [2.6.10-rc2+] ide1=ata66 -- OBSOLETE OPTION, WILL BE REMOVED SOON!

[Bartlomiej Zolnierkiewicz]

On Thu, 16 Dec 2004 15:29:19 +0100, Bartlomiej Zolnierkiewicz
<bzolnier@xxxxxxxxx> wrote:
> On Wed, 15 Dec 2004 23:52:52 +0000, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:
> > On Llu, 2004-12-13 at 21:47, Bartlomiej Zolnierkiewicz wrote:
> > > > I do need a way to force an 80c cable on this AMD756 (ATA66 max) board,
> > > > since the BIOS doesn't seem to be setting the cable bits correctly.
> > >
> > > Ugh, I checked AMD datasheets and AMD756 doesn't support host
> > > side cable detection.  Well, we can try doing disk side only for it.
> > > [ ATi and ITE (in -ac kernels) drivers are also doing this. ]
> >
> > That is probably a good change but not sufficient for things like
> > bladeservers where some vendors use short 40c cables which are within
> > specification but break drive side detection. Removing ata66 forcing
> > doesn't work because of these although perhaps it could be done using
> > subvendor ids so it is automatic ?
> 
> Yes, one of the aims of deprecating ata66 override was to see what can
> be done automatically.  The fewer special kernel parameters the better
> (w/o sacrificing functionality of course).

One thing I forgot - ata66 override alone ("idex=ata66") currently doesn't
help in the case you've described - it overrides host side only.

> > Right now I plan to keep ata66 overrides in -ac.
> 
> Fine but I'm not going to remove them soon (warning is a bit strong
> to help us gain more knowledge :), however it would be nice if somebody
> could move them from IDE core to specific host drivers.
> 
> Bartlomiej
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