1*92ca318eSMauro Carvalho ChehabWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/cap 22e442003SUjjal SinghDate: December 3, 2009 32e442003SUjjal SinghKernelVersion: 2.6.32 42e442003SUjjal SinghContact: dmaengine@vger.kernel.org 52e442003SUjjal SinghDescription: Capabilities the DMA supports.Currently there are DMA_PQ, DMA_PQ_VAL, 62e442003SUjjal Singh DMA_XOR,DMA_XOR_VAL,DMA_INTERRUPT. 72e442003SUjjal Singh 8*92ca318eSMauro Carvalho ChehabWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_active 92e442003SUjjal SinghDate: December 3, 2009 102e442003SUjjal SinghKernelVersion: 2.6.32 112e442003SUjjal SinghContact: dmaengine@vger.kernel.org 122e442003SUjjal SinghDescription: The number of descriptors active in the ring. 132e442003SUjjal Singh 14*92ca318eSMauro Carvalho ChehabWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_size 152e442003SUjjal SinghDate: December 3, 2009 162e442003SUjjal SinghKernelVersion: 2.6.32 172e442003SUjjal SinghContact: dmaengine@vger.kernel.org 182e442003SUjjal SinghDescription: Descriptor ring size, total number of descriptors available. 192e442003SUjjal Singh 20*92ca318eSMauro Carvalho ChehabWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/version 212e442003SUjjal SinghDate: December 3, 2009 222e442003SUjjal SinghKernelVersion: 2.6.32 232e442003SUjjal SinghContact: dmaengine@vger.kernel.org 242e442003SUjjal SinghDescription: Version of ioatdma device. 252e442003SUjjal Singh 26*92ca318eSMauro Carvalho ChehabWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/intr_coalesce 272e442003SUjjal SinghDate: August 8, 2017 282e442003SUjjal SinghKernelVersion: 4.14 292e442003SUjjal SinghContact: dmaengine@vger.kernel.org 302e442003SUjjal SinghDescription: Tune-able interrupt delay value per channel basis. 31