[PATCH v4 4/8] PCI: brcmstb: Add dma-range mapping for inbound traffic

[Christoph Hellwig]

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.