On Fri, 2011-10-14 at 09:33 -0600, Bjorn Helgaas wrote:

On Fri, Oct 14, 2011 at 9:14 AM, James Bottomley
[off-list ref] wrote:

quoted

On Thu, 2011-10-13 at 22:27 -0600, Bjorn Helgaas wrote:

quoted

The most generic way to create a PCI root bus is with pci_scan_bus(), but
that doesn't allow you to specify what resources are available on the bus,
i.e., what the host bridge apertures are.

Do you have an actual tree for this?  The PARISC pieces look a bit
non-trivial and I'd like to test them out on the various sba/astro/dino
systems.

I don't yet, but it'd be great if you were willing to test them out,
so I'll set one up.

While this is on your mind, I'm dubious about the pci_enable_bridges()
call in lba_driver_probe() and the pci_bus_assign_resources() call in
dino_probe().  These stand out as exceptions because no other arches
do that.

If they weren't there, both places could use pci_scan_root_bus() like
most other arches.

Right, the dino code actually has to rearrange some of the PCI resources
to make sure we get our apertures correct.  That's the specific bit I
was planning to test.  I think it's only relevant for dino SBA cards
where the bridge doesn't set up the card correctly so we have to do it
after the fact.

James