1*4882a593SmuzhiyunWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/cap 2*4882a593SmuzhiyunDate: December 3, 2009 3*4882a593SmuzhiyunKernelVersion: 2.6.32 4*4882a593SmuzhiyunContact: dmaengine@vger.kernel.org 5*4882a593SmuzhiyunDescription: Capabilities the DMA supports.Currently there are DMA_PQ, DMA_PQ_VAL, 6*4882a593Smuzhiyun DMA_XOR,DMA_XOR_VAL,DMA_INTERRUPT. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_active 9*4882a593SmuzhiyunDate: December 3, 2009 10*4882a593SmuzhiyunKernelVersion: 2.6.32 11*4882a593SmuzhiyunContact: dmaengine@vger.kernel.org 12*4882a593SmuzhiyunDescription: The number of descriptors active in the ring. 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_size 15*4882a593SmuzhiyunDate: December 3, 2009 16*4882a593SmuzhiyunKernelVersion: 2.6.32 17*4882a593SmuzhiyunContact: dmaengine@vger.kernel.org 18*4882a593SmuzhiyunDescription: Descriptor ring size, total number of descriptors available. 19*4882a593Smuzhiyun 20*4882a593SmuzhiyunWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/version 21*4882a593SmuzhiyunDate: December 3, 2009 22*4882a593SmuzhiyunKernelVersion: 2.6.32 23*4882a593SmuzhiyunContact: dmaengine@vger.kernel.org 24*4882a593SmuzhiyunDescription: Version of ioatdma device. 25*4882a593Smuzhiyun 26*4882a593SmuzhiyunWhat: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/intr_coalesce 27*4882a593SmuzhiyunDate: August 8, 2017 28*4882a593SmuzhiyunKernelVersion: 4.14 29*4882a593SmuzhiyunContact: dmaengine@vger.kernel.org 30*4882a593SmuzhiyunDescription: Tune-able interrupt delay value per channel basis. 31