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Altera_Forum
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9 years ago

altera_dma driver for PCIe

Hi everyone, i'm using an Arria V starter kit for PCIe application and i used the reference design posted in altera wiki. The application software reported success in one PC but not in other with dif...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

This thread totally slipped my mind. Sincere apology for the super delayed reply. But also I have been pretty hesitant to post my solution because I think my problem was just caused by my ignorance about how PCIe device and the IP works.

But, anyways, there were two reasons why it didn't work for me:

(1) I was using a PCIe extension cable to connect the device

(2) I didn't successfully recompile the reference design with the version of Quartus I use

After I plug the FPGA directly to the PCIe slot, regenerate (update) the Qsys file, and successfully recompile the entire design with the new version of Quartus, I was able to run the reference design with the speed of 5.X GB/s or up.

Hope this helps.