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drm/virtio: implement context init: plumb {base_fence_ctx, ring_idx} to virtio_gpu_fence_alloc

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These were defined in the previous commit. We'll need these
parameters when allocating a dma_fence.  The use case for this
is multiple synchronizations timelines.

The maximum number of timelines per 3D instance will be 32. Usually,
only 2 are needed -- one for CPU commands, and another for GPU
commands.

As such, we'll need to specify these parameters when allocating a
dma_fence.

vgdev->fence_drv.context is the "default" fence context for 2D mode
and old userspace.

Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Acked-by: Lingfeng Yang <lfy@google.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210921232024.817-8-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gurchetan Singh
2021-09-21 16:20:19 -07:00
committed by Gerd Hoffmann
parent 7547675b84
commit e8b6e76f69
4 changed files with 13 additions and 8 deletions
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3
drivers/gpu/drm/virtio/virtgpu_plane.c
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@@ -256,7 +256,8 @@ static int virtio_gpu_plane_prepare_fb(struct drm_plane *plane,
return 0;
if (bo->dumb && (plane->state->fb != new_state->fb)) {
vgfb->fence = virtio_gpu_fence_alloc(vgdev);
vgfb->fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context,
0);
if (!vgfb->fence)
return -ENOMEM;
}