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.
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