Re: PCI: Unable to reserve mem region problem

[Robert Hancock <hancockr@shaw.ca>]

Chuck Ebbert wrote:
> On 09/05/2007 08:31 PM, Alan Cox wrote:
> > On Wed, 05 Sep 2007 10:32:38 -0400
> > "Karl Bellve" <Karl.Bellve@umassmed.edu> wrote:
> >
> > > Please CC any response. Thanks.
> > >
> > > I am having an issue with a Supermicro h8dce motherboard and failure to 
> > > recognize a 5th SATA drive after upgrading to Fedora 7.
> > Can you send me an lspci -vvxxx so that I can look into this. Might be a
> > few days with the kernel summit but it should give a clue and may be
> > linked to ADMA mode
>
> It's in RH bugzilla:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=280641

The last BAR on the nForce4 ADMA controllers on this board are at 
0xdfefe000 and 0xdfefd000. But it looks like PnP ACPI is also reserving 
those memory ranges:

Aug 30 14:08:02 alcor kernel: pnp: 00:09: iomem range 
0xdfefd000-0xdfefd3ff has been reserved
Aug 30 14:08:02 alcor kernel: pnp: 00:09: iomem range 
0xdfefe000-0xdfefe3ff has been reserved

Which I very much doubt it should be doing, the BIOS doesn't need to 
reserve PCI BAR ranges in the ACPI tables. This sounds like a BIOS bug. 
You might want to check for an update from Supermicro.

--
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/