Address access issues in FPGA CXL Type 1 devices.

[xingyunzhidi]

Hello， in R-Tile Intel® FPGA IP for Compute Express Link* (CXL*) Design Example, the cust_afu_wrapper accesses the cached host memory in DCOH through the CAFU AXI-MM interface. I would like to ask whether the address in the AXI-MM protocol here should be a physical address or a virtual address? If it is a virtual address, how is it converted into a physical address? Best regards, Mark

[RongYuan · Accepted solution]

Hi,

Virtual address is for OS. The FPGA uses physical address.

Regards,

Rong