Re: Intel ICH7 SATA support question for ATA_PIIX

[Jeff Garzik <jgarzik@pobox.com>]

Greg Felix wrote:
> I have two new OEM machines that are both ICH7 chipsets.  
> Both machines give the same vendor and device PCI ids for their
> storage controllers.
> 
> 8086:27df and 8086:27c0
> 
> I noticed that Jason Gaston submitted a patch that made it into
> 2.6.11-rc1 to add support for ICH7 into ata_piix.  I'm using
> 2.6.11-rc5 and am getting good results on one of my machines.
> 
> The problem I'm having is that the other machine doesn't seem to be
> supported even though it appears to be the same controller (by PCI ID
> at least).  My modules.pcimap file shows that x27df and x27c0 are both
> mapped to the piix driver.  I'm seeing nothing in /proc/partitions.
> 
> Perhaps someone at Intel, or HP, or Jason Gaston, or Jeff Garzik even
> can shed some light on this or tell me where I can look to determine a
> chipset version number that can be used to differentiate the two
> boxes?  I'll gladly provide any more information I've forgotten.

See REPORTING-BUGS for the sort of information you should provide.  This 
is a "it doesn't work" report without much more info.

I would suggest doing a "modprobe ata_piix" or "modprobe ahci" 
(depending on ICH7 mode and hardware) and see what happens in 'dmesg'.

	Jeff