1What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/cap
2Date:           December 3, 2009
3KernelVersion:  2.6.32
4Contact:        dmaengine@vger.kernel.org
5Description:	Capabilities the DMA supports.Currently there are DMA_PQ, DMA_PQ_VAL,
6		DMA_XOR,DMA_XOR_VAL,DMA_INTERRUPT.
7
8What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_active
9Date:           December 3, 2009
10KernelVersion:  2.6.32
11Contact:        dmaengine@vger.kernel.org
12Description:	The number of descriptors active in the ring.
13
14What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_size
15Date:           December 3, 2009
16KernelVersion:  2.6.32
17Contact:        dmaengine@vger.kernel.org
18Description:	Descriptor ring size, total number of descriptors available.
19
20What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/version
21Date:           December 3, 2009
22KernelVersion:  2.6.32
23Contact:        dmaengine@vger.kernel.org
24Description:	Version of ioatdma device.
25
26What:           /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/intr_coalesce
27Date:           August 8, 2017
28KernelVersion:  4.14
29Contact:        dmaengine@vger.kernel.org
30Description:	Tune-able interrupt delay value per channel basis.
31