tree e21330c7880799f64abed26cf1c7737adb515fb1
parent baa6d396635129d8a67793e884f3b2182c7354b3
author Jason Gunthorpe <jgunthorpe@obsidianresearch.com> 1485978525 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1486736444 +0100

fpga zynq: Use the scatterlist interface

This allows the driver to avoid a high order coherent DMA allocation
and memory copy. With this patch it can DMA directly from the kernel
pages that the bitfile is stored in.

Since this is now a gather DMA operation the driver uses the ISR
to feed the chips DMA queue with each entry from the SGL.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Acked-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>