Pcie device in vxworks 7

We have to communicate SBC Card(Intel Xeon D) and SoC Card(zynqmp) through pcie interface. SBC is rootport working with vxworks 7 OS and SoC is endpoint working with petalinux. SoC is flashed with end point configuration in petalinux. SBC BIOS setting and kernel configuration is done to include vxb device drivers. When we run vxbDevShow, it lists SoC pcie vendor ID and device Id, but it displays “driver not attached”.
Please support us to resolve this issue.
Do we need to add device driver for SoC pcie? Or do we have to add manually in .dts file?

Please create a post on the Wind River Knowledge Forum at ask.windriver.com .