• Haavard Skinnemoen's avatar
    dmatest: Simple DMA memcpy test client · 4a776f0a
    Haavard Skinnemoen authored
    This client tests DMA memcpy using various lengths and various offsets
    into the source and destination buffers. It will initialize both
    buffers with a repeatable pattern and verify that the DMA engine copies
    the requested region and nothing more. It will also verify that the
    bytes aren't swapped around, and that the source buffer isn't modified.
    
    The dmatest module can be configured to test a specific device, a
    specific channel. It can also test multiple channels at the same time,
    and it can start multiple threads competing for the same channel.
    
    Changes since v2:
      * Support testing multiple channels at the same time
      * Support testing with multiple threads competing for the same channel
      * Use counting test patterns in order to catch byte ordering issues
    
    Changes since v1:
      * Remove extra dashes around "help"
      * Remove "default n" from Kconfig
      * Turn TEST_BUF_SIZE into a module parameter
      * Return DMA_NAK instead of DMA_DUP
      * Print unhandled events
      * Support testing specific channels and devices
      * Move to the end of the Makefile
    Acked-by: default avatarMaciej Sosnowski <maciej.sosnowski@intel.com>
    Signed-off-by: default avatarHaavard Skinnemoen <hskinnemoen@atmel.com>
    Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
    4a776f0a
Makefile 306 Bytes