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

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

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.

 -- Keir



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