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| author | Robert Foss | 2018-11-12 17:51:56 +0100 |
|---|---|---|
| committer | Gerd Hoffmann | 2018-11-14 14:21:02 +0100 |
| commit | 2cd7b6f08bc4cf06d1f00f8b42720a8457861ca1 (patch) | |
| tree | 380b8046626d860e6b858eb11cc6107f14c19037 /include/uapi/drm | |
| parent | drm/virtio: add uapi for in and out explicit fences (diff) | |
| download | kernel-qcow2-linux-2cd7b6f08bc4cf06d1f00f8b42720a8457861ca1.tar.gz kernel-qcow2-linux-2cd7b6f08bc4cf06d1f00f8b42720a8457861ca1.tar.xz kernel-qcow2-linux-2cd7b6f08bc4cf06d1f00f8b42720a8457861ca1.zip | |
drm/virtio: add in/out fence support for explicit synchronization
When the execbuf call receives an in-fence it will get the dma_fence
related to that fence fd and wait on it before submitting the draw call.
On the out-fence side we get fence returned by the submitted draw call
and attach it to a sync_file and send the sync_file fd to userspace. On
error -1 is returned to userspace.
VIRTGPU_EXECBUF_FENCE_FD_IN & VIRTGPU_EXECBUF_FENCE_FD_OUT
are supported at the simultaneously and can be flagged
for simultaneously.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20181112165157.32765-4-robert.foss@collabora.com
Suggested-by: Rob Herring <robh@kernel.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/virtgpu_drm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h index 91062f4ac7c5..f06a789f34cd 100644 --- a/include/uapi/drm/virtgpu_drm.h +++ b/include/uapi/drm/virtgpu_drm.h @@ -66,7 +66,7 @@ struct drm_virtgpu_execbuffer { __u64 command; /* void* */ __u64 bo_handles; __u32 num_bo_handles; - __s32 fence_fd; + __s32 fence_fd; /* in/out fence fd (see VIRTGPU_EXECBUF_FENCE_FD_IN/OUT) */ }; #define VIRTGPU_PARAM_3D_FEATURES 1 /* do we have 3D features in the hw */ |