Documentation/ABI/stable/sysfs-driver-dma-ioatdma

   1 What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/cap
   2 Date:           December 3, 2009
   3 KernelVersion:  2.6.32
   4 Contact:        dmaengine@vger.kernel.org
   5 Description:    Capabilities the DMA supports.Currently there are DMA_PQ, DMA_PQ_VAL,
   6                 DMA_XOR,DMA_XOR_VAL,DMA_INTERRUPT.
   7
   8 What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_active
   9 Date:           December 3, 2009
  10 KernelVersion:  2.6.32
  11 Contact:        dmaengine@vger.kernel.org
  12 Description:    The number of descriptors active in the ring.
  13
  14 What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_size
  15 Date:           December 3, 2009
  16 KernelVersion:  2.6.32
  17 Contact:        dmaengine@vger.kernel.org
  18 Description:    Descriptor ring size, total number of descriptors available.
  19
  20 What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/version
  21 Date:           December 3, 2009
  22 KernelVersion:  2.6.32
  23 Contact:        dmaengine@vger.kernel.org
  24 Description:    Version of ioatdma device.
  25
  26 What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/intr_coalesce
  27 Date:           August 8, 2017
  28 KernelVersion:  4.14
  29 Contact:        dmaengine@vger.kernel.org
  30 Description:    Tune-able interrupt delay value per channel basis.