Hello Marek, On 02/14/2017 04:51 AM, Marek Szyprowski wrote: > Dear All, > > This patchset is a result of my work on enabling full support for MFC device > (multimedia codec) on Exynos 5433 on ARM64 architecture. Initially I thought > that to let it working on ARM64 architecture with IOMMU, I would need to > solve the issue related to the fact that s5p-mfc driver was depending on the > first-fit allocation method in the DMA-mapping / IOMMU glue code (ARM64 use > different algorithm). It turned out, that there is a much simpler way. >
A nice side effect of these patches is that I don't see anymore a page fault error with CMA when sharing dma-buf between s5p-fmc and exynos-gsc drivers. Following GST pipeline used to lead to a system crash, but it's working now: $ gst-launch-1.0 filesrc location=test.mp4 ! qtdemux ! h264parse ! \ v4l2video2dec capture-io-mode=dmabuf ! v4l2video0convert \ output-io-mode=dmabuf-import capture-io-mode=dmabuf ! kmssink Best regards, -- Javier Martinez Canillas Open Source Group Samsung Research America
