The Intel® Arria® 10 PCIe* Hard IP (HIP) supports the Root Port Mode Configuration Requests in which Configuration Type 0 TLPs can be sent into the HIP via the Avalon®-ST TX interface to read/write the HIP's local Configuration Space when it's operating in Root Port mode.
However, Type 0 Root Port Mode Configuration Requests capability is NOT supported in the Intel® Stratix® 10 PCIe* HIP operating in Root Port mode. The user is directed to use the HIP Reconfiguration interface to access the local Configuration Space.
The Intel® Stratix® 10 PCIe* Hard IP user guides will be updated to explicitly state that Type 0 Root Port Mode Configuration Requests capability is not supported.