diff options
| author | Gurchetan Singh <gurchetansingh@chromium.org> | 2021-09-22 02:20:23 +0300 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2021-09-29 10:22:31 +0300 |
| commit | cd7f5ca33585918febe5e2f6dc090a21cfa775b0 (patch) | |
| tree | 6bbee480a5b3c6073de5ffcdea6c9be2bd3f6771 /drivers/gpu/drm/virtio/virtgpu_fence.c | |
| parent | 8d6b006e1f51c99016aa39ca9e03947cbdd024e3 (diff) | |
| download | linux-cd7f5ca33585918febe5e2f6dc090a21cfa775b0.tar.xz | |
drm/virtio: implement context init: add virtio_gpu_fence_event
Similar to DRM_VMW_EVENT_FENCE_SIGNALED. Sends a pollable event
to the DRM file descriptor when a fence on a specific ring is
signaled.
One difference is the event is not exposed via the UAPI -- this is
because host responses are on a shared memory buffer of type
BLOB_MEM_GUEST [this is the common way to receive responses with
virtgpu]. As such, there is no context specific read(..)
implementation either -- just a poll(..) implementation.
Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Acked-by: Nicholas Verne <nverne@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20210921232024.817-12-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_fence.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_fence.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c b/drivers/gpu/drm/virtio/virtgpu_fence.c index 98a00c1e654d..f28357dbde35 100644 --- a/drivers/gpu/drm/virtio/virtgpu_fence.c +++ b/drivers/gpu/drm/virtio/virtgpu_fence.c @@ -152,11 +152,21 @@ void virtio_gpu_fence_event_process(struct virtio_gpu_device *vgdev, continue; dma_fence_signal_locked(&curr->f); + if (curr->e) { + drm_send_event(vgdev->ddev, &curr->e->base); + curr->e = NULL; + } + list_del(&curr->node); dma_fence_put(&curr->f); } dma_fence_signal_locked(&signaled->f); + if (signaled->e) { + drm_send_event(vgdev->ddev, &signaled->e->base); + signaled->e = NULL; + } + list_del(&signaled->node); dma_fence_put(&signaled->f); break; |