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

ID 683517
Date 12/01/2021
Public

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3.5.2.3.2.4. Establish Communication Between Host and QEMU

  1. Login to Guest VM.

    $telnet localhost 5551

  2. Bring up interface.

    $ifconfig eth0 up

  3. Assign the IP address to eth0.

    $ifconfig eth0 <1.1.1.11>

Execute the following command from the Host:
  1. Bring up net6551. "net6551" is the tap interface that you give in the QEMU command.

    $ifconfig net6551 up

    $ifconfig net6551 <1.1.1.12>

  2. Copy the code by using scp.

    Eg: $scp -r <directory> root@<GuestIP>:/<path_to_the_directory>/

  3. Refer to section 3.5.2.3.1 for updating the grub file in VM.
  4. Enable NO_IOMMU mode inside the Guest VM.

    Currently, QEMU does not support IOMMU. When running software on the Guest VM, if you are using vfio, you need to enable the NO_IOMMU_MODE mode.

    Edit common/mk/common.mk to define the following macro.

    Eg: __cflags += -DNO_IOMMU_MODE

    By default, this flag is disabled.

  5. Refer to Software Setup for the procedure to build and install MCDMA.

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