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sachin_blr's avatar
sachin_blr
Icon for New Contributor rankNew Contributor
5 years ago
Solved

Arria 10 PCIe Gen3x8 DMA(AN 829 ) - Linux Driver Error " Couldn't open the device"

Hi all, We were trying to install the DMA test driver and run the Linux DMA software as mentioned in "AN 829: PCI Express* Avalon®-MM DMA Reference Design" under "1.2.7. Installing the DMA Test Dri...
  • sachin_blr's avatar
    sachin_blr
    5 years ago

    Thank for your following up on this issue, SK.

    Our issue got resolved, on setting the base class code (upper byte at offset 0Bh in the PCIe configuration space) to 0xFF (Device does not fit any defined class). We did not have to change our host device or OS.

    We were able to successfully run the Linux DMA software as mentioned in "AN 829: PCI Express Avalon -MM DMA Reference Design" document.

    Regards,

    Sachin

SengKok_L_Intel's avatar
SengKok_L_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

Did you use the root (or su) to “make” and “install” the driver?

After programming the SOF, did you restart the host to ensure the PCIe link is enumerated?

Regards -SK


  • sachin_blr's avatar
    sachin_blr
    Icon for New Contributor rankNew Contributor
    5 years ago

    Hi SK,

    Thank you for your response.

    I had used "sudo" when running install.

    Further, the host was restarted after programming the SOF.

    We are still facing the issues mentioned above.

    Regards,

    Sachin