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As far as I know, Linux provides common DMA framework for various DMA engine and a device driver for DMA engine have to be implemented based on the the framework.
Is the framework provide any system calls or mechanism for user application such as: open(), ioctl()? Or do developers have to implement the file-operations for user space?
user9270215
Posted 2018-01-31T01:25:37.483
Reputation: 11
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Start with this: http://lmgtfy.com/?q=dma+in+linux+userspace
– sawdust – 2018-01-31T02:01:02.153