[RFC 2/4] PCI: generic: Add support for ARM64 and MSI(x)

On Thu, Nov 06, 2014 at 12:05:48AM +0000, Arnd Bergmann wrote:

On Wednesday 05 November 2014 16:39:21 Bjorn Helgaas wrote:

quoted

On Wed, Oct 22, 2014 at 10:52:19PM +0200, Arnd Bergmann wrote:

quoted

On Wednesday 22 October 2014 16:59:14 Lorenzo Pieralisi wrote:

quoted

On Wed, Oct 01, 2014 at 10:38:45AM +0100, Arnd Bergmann wrote:

[...]

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The arm32 implementations of pci_domain_nr/pci_proc_domain can probably be
removed if we change the arm32 pcibios_init_hw function to call the new
interfaces that set the domain number.

I wished, but it is a bit more complicated than I thought unfortunately,
mostly because some drivers, eg cns3xxx set the domain numbers
statically in pci_sys_data and this sets a chain of dependency that is
not easy to untangle. I think cns3xxx is the only legacy driver that "uses"
the domain number (in pci_sys_data) in a way that clashes with the
generic domain_nr implementation, I need to give it more thought.

Just had a look at that driver, shouldn't be too hard to change, see below.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

This patch is in my patchwork, but it lacks a topic & changelog and I'm not
sure of its state, so I'm going to drop it for now.  Please post it again
if you want me to do something with it.  I guess it only touches arch/arm,
so it would probably be merged via your tree anyway.

Lorenzo has posted an updated version as

"arm: cns3xxx: pci: remove artificial dependency on pci_sys_data domain",
and a second patch that depends on it. That is the version we should be
merging, though I'm not sure through which tree.

I am posting a v2 shortly, let's discuss the best way to merge it then.

Thanks,
Lorenzo