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