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Published 20 hours ago • verified publisher icon foss-for-synopsys-dwc-arc-processors

ARCv3: Add CDMA support driver

Open xxkent opened this issue 1 year ago • 0 comments

Driver to support Cluster DMA(CDMA) controller for ARCv3. For HS58 tested on nSIM and HAPS using 'dmatest' driver. For HS68 tested on nSIM using 'dmatest' driver.

Known limitations: Don't specify 'test_buf_size' 'dmatest' parameter more then 750000 when L2$ is enabled. Looks like L2$ operations in cache-arcv3.c:scm_op_rgn() fails when sz > 750000. Probably it is restriction in HW. Otherwise the kernel will crash.

xxkent avatar Jul 18 '23 14:07 xxkent