[PATCH v2 19/27] pci: PCIe driver for Marvell Armada 370/XP systems

[Thomas Petazzoni]

Dear Andrew Murray,

On Thu, 7 Feb 2013 16:53:47 +0000, Andrew Murray wrote:

> > So in fact the problem is indeed that the subnodes pcie0,0 and pcie1,0
> > are seen as corresponding to the PCI-to-PCI bridges.
> 
> I would suggest changing the interrupt-mask to match any bus number. (Don't
> forget that the secondary bus number of each of your emulated bridges will
> vary depending on how many devices are detected underneath each root port,
> assuming you don't try and partition bus numbers or use domains between ports).

I don't think this would work. Currently, the interrupt-map associates
the interrupts with the PCI-to-PCI bridges, i.e devices 00:01, 00:02,
00:03, 00:04, 00:05, etc.

The real PCIe devices themselves are at 01:00, 02:00, 03:00, 04:00,
05:00. Each of them sit on a different bus, at devfn = 0.

So if I ignore the bus number, how could the PCI code find what is the
matching interrupt?

Thanks,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com