On Fri, Jun 22, 2012 at 11:28:15AM -0600, Stephen Warren wrote:

On 06/22/2012 11:00 AM, Stephen Warren wrote:

quoted

On 06/22/2012 05:00 AM, Thierry Reding wrote:
...

quoted

Stephen: can you try to find out whether the Tegra PCIe controller 
indeed implements ECAM, or if this scheme is actually just a
proprietary variant?

Sure. I have added this request to the bug I filed requesting more
complete PCIe host documentation.

I've received unofficial confirmation that we do indeed implement a
non-standard/non-ECAM mapping, and what's in our driver matches our HW.

What I don't quite see yet is how the extended configuration space is
supposed to work with the current driver. The PCIE_CONF_* macros don't
provide for registers >= 256. Passing a value higher than that will mess
with the device function field.

Thierry