Multi Channel DMA Intel® FPGA IP for PCI Express Design Example User Guide

ID 683517
Date 4/29/2022
Public

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3.5.2.3.5. External Descriptor Mode Verification

Use the following steps to verify the external fetch descriptors:

  1. Define the following parameters in ./software/user/common/mk/common.mk.
    __cflags += -DIFC_MCDMA_EXTERNL_DESC
  2. Build the devmem utility.
    cd ./software/user/cli/devmem/
    
    make clean all
  3. Disable the queues and FIFOs.
    devmem 0000:09:00.0 0 0x8 0x1
  4. Enable the queues and FIFOs
    devmem 0000:09:00.0 0 0x8 0x0
  5. Command:
    ./ perfq_app -b 0000:09:00.0 -d 1\
     -c 16 -a 8 -p 1024 -s 102400 -u

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