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drm/virtio: implement context init: track {ring_idx, emit_fence_info} in virtio_gpu_fence

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Each fence should be associated with a [fence ID, fence_context,
seqno].  The seqno number is just the fence id.

To get the fence context, we add the ring_idx to the 3D context's
base_fence_ctx.  The ring_idx is between 0 and 31, inclusive.

Each 3D context will have it's own base_fence_ctx. The ring_idx will
be emitted to host userspace, when emit_fence_info is true.

Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Acked-by: Lingfeng Yang <lfy@google.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210921232024.817-7-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gurchetan Singh
2021-09-21 16:20:18 -07:00
committed by Gerd Hoffmann
parent 4fb530e5ca
commit 7547675b84
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -139,7 +139,9 @@ struct virtio_gpu_fence_driver {
struct virtio_gpu_fence {
struct dma_fence f;
uint32_t ring_idx;
uint64_t fence_id;
bool emit_fence_info;
struct virtio_gpu_fence_driver *drv;
struct list_head node;
};