Re: [Xen-devel] PCI Device 16 and over

[Simon Horman <horms@xxxxxxxxxxxx>]

On Fri, Mar 06, 2009 at 08:06:26AM +0000, Keir Fraser wrote:
> On 05/03/2009 22:33, "Simon Horman" <horms@xxxxxxxxxxxx> wrote:
> 
> > Suspecting this is related to firmware issues I started to poke around
> > there, and noticed that in tools/firmware/hvmloader/acpi/dsdt.asl
> > "Device 1" - "Device 15" are mentioned, but devices 16+ are not.
> > 
> > I have to admit that I don't understand dsdt.asl (though any pointers would
> > be welcome). But this does seem curious.
> 
> The DSDT contains all sorts of platform description. One thing it does is
> describe PCI INTx routing to GSIs. As you note, I guess the table is
> incomplete. The $PIR table in rombios.c will probably have the same
> limitation. You can probably work out how to extend the pattern in these two
> tables up to full 32 devices. I can help if not.

Hi Keir,

thanks for the advice. I seem to have a patch that works and
I have posted it as "HVM: Expand the number of PCI interrupts from 16 to 32"

-- 
Simon Horman
  VA Linux Systems Japan K.K., Sydney, Australia Satellite Office
  H: www.vergenet.net/~horms/             W: www.valinux.co.jp/en


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel