Device Family: Intel® Arria® 10 GT, Intel® Arria® 10 GX, Intel® Arria® 10 SX, Arria® V GT, Arria® V GX, Arria® V GZ, Arria® V ST, Arria® V SX, Cyclone® V GT, Cyclone® V GX, Cyclone® V SE, Cyclone® V ST, Cyclone® V SX, Stratix® V E, Stratix® V GS, Stratix® V GT, Stratix® V GX
Area: Intellectual Property
The driver software communicating with the Hard IP core must be aware that a configuration read of the Vendor ID register was pending and that the Completion without data and UR indicate device/bus/function not present. If this request was from higher layer software the driver should report a Vendor ID=0xFFFFFFFF to meet the expectations of system software components.
The Altera® Hard IP for PCI® Express is a root port device, it is the surrounding Root Complex that is responsible for reporting the 0xFFFFFFFF Vendor ID.