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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>
This commit is contained in:
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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7
drivers/gpu/drm/virtio/virtgpu_fb.c
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@@ -29,13 +29,6 @@
#define VIRTIO_GPU_FBCON_POLL_PERIOD (HZ / 60)
struct virtio_gpu_fbdev {
struct drm_fb_helper helper;
struct virtio_gpu_framebuffer vgfb;
struct virtio_gpu_device *vgdev;
struct delayed_work work;
};
static int virtio_gpu_dirty_update(struct virtio_gpu_framebuffer *fb,
bool store, int x, int y,
int width, int height)