Connecting to "PCI command write" interrupt on 4xx platforms

[Stefan Roese]

On Monday 03 November 2008, Benjamin Herrenschmidt wrote:
> On Mon, 2008-11-03 at 10:10 +0100, Matthias Fuchs wrote:
> > Adding this interrupt to the PCI node would make (logical) sense. But
> > on PCI adapter (add-in cards) designs we typically disable the PCI node
> > of the DT to disable PCI PnP. This should not prevent us from adding the
> > interrupt to the node but it looks a little bit weird to take an
> > interrupt from a disabled node, right?
>
> You can make a pci-endpoint node that isn't detected as a host bridge.
> In fact, I think we have some way to even tell in the DT not to activate
> host bridge function on 44x nowadays no ? I dont remember for sure but
> it's easy enough to add.

Yes, it's there. But "only" for PCIe and not for PCI(-X). This patch added it 
for PCIe:

    [POWERPC] 4xx: Add endpoint support to 4xx PCIe driver
    
It should be easy to add this for PCI and PCI-X as well.

Best regards,
Stefan