Gurchetan Singh 34268c9dde
virtio-gpu api: multiple context types with explicit initialization ...
This feature allows for each virtio-gpu 3D context to be created
with a "context_init" variable. This variable can specify:
- the type of protocol used by the context via the capset id.
This is useful for differentiating virgl, gfxstream, and venus
protocols by host userspace.
- other things in the future, such as the version of the context.
In addition, each different context needs one or more timelines, so
for example a virgl context's waiting can be independent on a
gfxstream context's waiting.
VIRTIO_GPU_FLAG_INFO_RING_IDX is introduced to specific to tell the
host which per-context command ring (or "hardware queue", distinct
from the virtio-queue) the fence should be associated with.
The new capability sets (gfxstream, venus etc.) are only defined in
the virtio-gpu spec and not defined in the header.
Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org >
Acked-by: Lingfeng Yang <lfy@google.com >
Link: http://patchwork.freedesktop.org/patch/msgid/20210921232024.817-2-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com >
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34268c9dde