drm/virtio: add dma sync for dma mapped virtio gpu framebuffer pages

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With virtio gpu ttm-pages being dma mapped, dma sync is needed when
swiotlb is used as bounce buffers, before TRANSFER_TO_HOST_2D/3D
commands are sent.

Signed-off-by: Jiandi An <jiandi.an@amd.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180919070931.91168-1-jiandi.an@amd.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

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Jiandi An 2018-09-19 07:09:53 +00:00 • committed by Gerd Hoffmann

parent 3536faefc0

commit 8f44ca2233

3 changed files with 26 additions and 7 deletions

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8

drivers/gpu/drm/virtio/virtgpu_drv.h

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7

drivers/gpu/drm/virtio/virtgpu_fb.c

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18

drivers/gpu/drm/virtio/virtgpu_vq.c

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