[vfio-users] DMA engine in soc

Ran Shalit ranshalit at gmail.com
Thu Feb 8 06:41:22 UTC 2018


Hello,

It seems that in most cases PCI drivers use DMA engine in EP.
Yet, in our case we need to DMA engine in soc (Marvell's armada).
In kernel it is done using dmaengine.
1. Is it supported as part of vfio to use dma engine in soc ?
2. As I understand vfio only deals with memory mapping, not on DMA
triggerting (as done in dmaengine), Yet, is there a way to achieve
such triggering of DMA engine from userspace (or better is all be done
in kernel) ?

Thank you!
Ran




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