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OlegT's avatar
OlegT
Icon for Occasional Contributor rankOccasional Contributor
4 years ago
Solved

MSI interrupt in PCIe-MM-DMA example

Hello. I am working with C10GX developement kit. As a starting point I use AN829 - Avalon-MM DMA ref design. DMA works well. I want to test MSI in that design. The design contains linux driver...
  • OlegT's avatar
    OlegT
    4 years ago

    I've replaced legacy pci_enable_msi() with pci_alloc_irq_vectors(). Now ISR for single interrupts is called.

KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
4 years ago

Hi,


Do you see the MSI when all the DMA data transfers are complete?


Thanks

Best regards,

KhaiY


  • OlegT's avatar
    OlegT
    Icon for Occasional Contributor rankOccasional Contributor
    4 years ago

    I do not see interrupt on host PC, but I see, that wr_dcm_master sends irq_data and irq_address to txs.

    irq_data and irq_address are the values from MSIIntfc_o.