> From the DWC EP databook 5.96a, section "3.5.7.1.4 General Rules for BAR
> Setup (Fixed Mask or Programmable Mask Schemes Only)":
>
> "Any pair (for example BARs 0 and 1) can be configured as one 64-bit BAR,
> two 32-bit BARs, or one 32-bit BAR."
>
> "BAR pairs cannot overlap to form a 64-bit BAR. For example, you cannot
> combine BARs 1 and 2 to form a 64-bit BAR."
>
> While this limitation does exist in some other PCI endpoint controllers,
> e.g. cdns_pcie_ep_set_bar(), the limitation does not appear to be defined
> in the PCIe specification itself, thus add an explicit check for this in
> dw_pcie_ep_set_bar() (rather than pci_epc_set_bar()).
Applied to controller/dwc, thank you!
[1/1] PCI: dwc: ep: Enforce DWC specific 64-bit BAR limitation
https://git.kernel.org/pci/pci/c/a46de632131f
Krzysztof
