Article ID: 000076536 Content Type: Troubleshooting Last Reviewed: 01/18/2017

Why does the Avalon-MM DMA Hard IP for PCIe fail to return data for small DMA transfers?

Environment

  • Intel® Arria® 10 GT FPGA
  • Intel® Arria® 10 GX FPGA
  • Intel® Arria® 10 SX SoC FPGA
  • Intel® Quartus® Prime Pro Edition
  • Intel® Arria® 10 Cyclone® 10 Hard IP for PCI Express
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    Description

    The Arria® 10 Hard IP for PCI Express with Avalon-MM DMA IP Core fails to return data for small DMA transfers. This problem can occur when the read size is less than 128bytes and the source address is aligned to 256bytes.

    Resolution

    This problem is fixed starting in the Quartus® Prime software version 16.1.

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