On Wed, Jan 24, 2018 at 12:04:58PM -0800, Florian Fainelli wrote:

This looks nicer than the current shape, but this still requires to
register a PCI fixup to override phys_to_dma() and dma_to_phys(), and it
would appear that you have dodged my question about how this is supposed
to fit with an entirely modular PCIe root complex driver? Are you
suggesting that we split the module into a built-in part and a modular part?

I don't think entirely modular PCI root bridges should be a focal point
for the design.  If we happen to support them by other design choices:
fine, but they should not be a priority.

That being said if we have core dma mapping or PCIe code that has
a list of offsets and the root complex only populates them it should
work just fine.