Customization of upd72020x firmware possible?

Hello,

we are developing a PCIe frame grabber card and would like to use upd72020x.

We would need to re-direct USB-IN data from upd72020x to local FPGA memory (PCIe peer-to-peer).

Is is possible to customize the upd72020x firmware in that way?

Is is possible to get the firmware or Windows driver source code?

Best regards

Guenter