ADM-PCIE-9V3 example not working

harris-chris commented 1 month ago

Hello

(edited because the first post had a simple mistake)

I'm trying to build the ADM-PCIE-9V3 example, and having some issues. I've done the following:

cd-ed to example/ADM_PCIE_9V3/fpga_25g
Set SUBDIRS = fpga_10g in ./Makefile, because I'd like to build the 10Gb/s version; beyond this there are no other changes to the repo
Run make. No errors are reported and there doesn't seem to be anything unusual on the output. It looks like it all works fine.
cd-ed to ./fpga_10g, then run make program to program the FPGA (this step seems to be required, but is not mentioned in the documentation).
Directly connected the FPGA to another machine, on a 10Gb/s interface. Autonegotiation is turned off. The connection is a PLR4 40G SM QSFP+ transceiver on line 1 of a breakout cable connecting to a 10G SM LR transceiver.
According to ethtool, no link can be detected, the speed is Unknown!.
Assigned one of the front LEDs to qsfp_0_rx_block_lock. It does not light up. So presumably the PHY layer can't establish a lock.

Could I check that this all sounds correct, and there's nothing obviously wrong with my process above?

elliotpotts commented 1 month ago

I have also been unable to get the ADM-PCIE-9V3 example working.

harris-chris commented 1 month ago

Closing this because my problem was entirely unrelated to this repo. If anyone else has a problem with the ADM-PCIE-9V3 card, check the card's settings with the avr2util supplied by Alpha Data, it's possible to permanently alter the QSFP28 interface clock (which is what somebody had done to my card, and could then be re-set by the same utility).

alexforencich commented 1 month ago

Nice work sorting that out, never knew you could do that myself. Although I suppose if you can change it back, it's not permanent, only nonvolatile. Honestly with the fractional-N support in the QPLLs, there should be no reason to change the clock frequency, unless maybe you're doing something really strange.

elliotpotts commented 1 month ago

To add, the utility can be downloaded and built from here: https://support.alpha-data.com/pub/firmware/utilities/linux/ https://support.alpha-data.com/pub/firmware/utilities/windows/

alexforencich / verilog-ethernet

ADM-PCIE-9V3 example not working #224