Access IO ports via PCIe in Jetson AGX Orin

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
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I Have connected mini card in the PCIe connector in my custom board which uses Nvidia Jetson AGX Orin, My mini card is FPGA based, i am trying access the IO ports, but i am unable to control the registers in the FPGA.

txt file show the output of lspci command.
lspci_outputlogs.txt (8.9 KB)

Below is the driver program which i have created to access the I/o registers.
fpga_pcie_led_driver.txt (4.0 KB)

is there any way to access the IO ports ?

I have been using my Mini Pcie card in x86, it works fine.