On Nov 30, 2007, at 12:10 AM, Benjamin Herrenschmidt wrote:

This adds to the previous 2 patches the support for the 4xx PCI  
Express
cells as found in the 440SPe revA, revB and 405EX.

Unfortunately, due to significant differences between these, and other
interesting "features" of those pieces of HW, the code isn't as simple
as it is for PCI and PCI-X and some of the functions differ  
significantly
between the 3 implementations. Thus, not only this code can only  
support
those 3 implementations for now and will refuse to operate on any  
other,
but there are added ifdef's to avoid the bloat of building a fairly  
large
amount of code on platforms that don't need it.

Also, this code currently only supports fully initializing root  
complex
nodes, not endpoint. Some more code will have to be lifted from the
arch/ppc implementation to add the endpoint support, though it's  
mostly
differences in memory mapping, and the question on how to represent
endpoint mode PCI in the device-tree is thus open.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

440SPeA is untested, 440SPeB is slightly tested (with a sky2 network  
card on
port 0 only for now) and 405EX is untested.

arch/powerpc/Kconfig             |    1
arch/powerpc/sysdev/Kconfig      |    8
arch/powerpc/sysdev/ppc4xx_pci.c |  927 +++++++++++++++++++++++++++++ 
+++++++++-
arch/powerpc/sysdev/ppc4xx_pci.h |  237 +++++++++
4 files changed, 1172 insertions(+), 1 deletion(-)

Is it intentional that you dont support ppc_md.pci_exclude_device()?

- k