https://docs.amd.com/r/1.0-English/pg344-pcie-dma-versal/Config-Block-BusDev-0x04
Config Block BusDev (0x04) - Config Block BusDev (0x04) - 1.0 English - PG344
Table 1. Config Block BusDev (0x04) Bit Index Default Access Type Description [15:0] PCIe IP RO bus_dev Bus, device, and function
configblockenglish