Subject: Re: Intel SATA RAID
To: Jason Thorpe <email@example.com>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 12/06/2003 23:35:41
On Sat, Dec 06, 2003 at 02:31:11PM -0800, Jason Thorpe wrote:
> On Dec 6, 2003, at 2:16 PM, Manuel Bouyer wrote:
> >On Sat, Dec 06, 2003 at 11:20:15AM -0800, Jason Thorpe wrote:
> >>I don't think this patch is correct, for a couple of reasons:
> >> * Do you know if this SATA controller is actually based on the
> >> i31244 SATA chip (Artisea)? If it is not, then you should not
> >> be using artisea_chip_map.
> >>From the ICH5/5R datasheet, the registers are the same for 82801EB
> >>and ER,
> >and 82801EB is already using artisea_chip_map().
> That's probably incorrect for anything other than the i31244 to be
> using artisea_chip_map(). i31244 has another mode called "DPA mode"
> which uses a much different register layout than traditional PCI IDE,
> and artisea_chip_map() will be changed to support that mode one day.
> Also, the i31244 has LED setup (that our driver doesn't currently do)
> that will not be shared by the ICH SATA controllers.
> I suggest instead that you create an "ichsata_chip_map" to handle the
> ICH SATA controllers. It is simply wrong to use artisea_chip_map() for
OK, will do.
> >Note that I didn't commit this part, I assumed it was a left over from
> >attempt to make it work with piixide_chip_map instead of
> >The parallel IDE controller on the ICH5/5R are identical (and use the
> >same device ID).
> You mean it is impossible to distinguish between the ICH5 SATA and PATA
> controllers? Wow, that's incredibly broken.
No, I mean it's impossible to distinguish between the ICH5 PATA and
ICH5R PATA, but that's not a problem.
I didn't look at other functions, but I think the only difference between
ICH5 and ICH5R if the SATA controller.
Manuel Bouyer <email@example.com>
NetBSD: 24 ans d'experience feront toujours la difference