Subject: Re: wdc VS pciide
To: Samuel.Hornus <Samuel.Hornus@crans.org>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: port-macppc
Date: 06/11/2001 21:04:42
On Mon, Jun 11, 2001 at 09:22:10AM +0200, Samuel.Hornus wrote:
> 
> Hi,
> 
> It seems that wdc and pciide provides the same functionnality at the same
> level of abstraction for the 'upper' driver wd.
> 'man wdc' says that "PCI IDE controllers in legacy mode are also
>      supported, but the pciide(4) driver may provide more functionality"
> 
> I have a G4 with a IBM brand new IDE hard disk.
> I have problems with it (see 'daily cronjob freezes the machine' post)
> So I would like to know wether, on my machine, changing wdc for pciide is
> an (better) alternative ? in order to avoid the lost_interrupt crash.

What kind of controller is it (dmesg please) ?

pciide has knowledges of chips-specific features (in order to use DMA, mainly).
It's possible that the OF didn't set up timing properly and that pciide
corrected this.

--
Manuel Bouyer <bouyer@antioche.eu.org>
--