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drm/virtio: New fence for every plane update

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Having a fence linked to a virtio_gpu_framebuffer in the plane update
sequence would cause conflict when several planes referencing the same
framebuffer (e.g. Xorg screen covering multi-displays configured for an
extended mode) and those planes are updated concurrently. So it is needed
to allocate a fence for every plane state instead of the framebuffer.

Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
[dmitry.osipenko@collabora.com: rebase, fix up, edit commit message]
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Acked-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241020230803.247419-2-dmitry.osipenko@collabora.com
This commit is contained in:
Dongwon Kim
2024-10-21 02:08:03 +03:00
committed by Dmitry Osipenko
parent 30f86b8f86
commit d3c55b8ab6
2 changed files with 46 additions and 19 deletions
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7
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -194,6 +194,13 @@ struct virtio_gpu_framebuffer {
#define to_virtio_gpu_framebuffer(x) \
container_of(x, struct virtio_gpu_framebuffer, base)
struct virtio_gpu_plane_state {
struct drm_plane_state base;
struct virtio_gpu_fence *fence;
};
#define to_virtio_gpu_plane_state(x) \
container_of(x, struct virtio_gpu_plane_state, base)
struct virtio_gpu_queue {
struct virtqueue *vq;
spinlock_t qlock;