[RFC PATCH 11/13] gfxstream + rutabaga: enable rutabaga

[Gurchetan Singh <gurchetansingh@chromium.org>]

This change enables rutabaga to receive virtio-gpu-3d hypercalls
when it is active.

Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
---
 hw/display/virtio-gpu-base.c | 3 ++-
 hw/display/virtio-gpu-gl.c   | 9 ++++++++-
 hw/display/virtio-gpu.c      | 5 +++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/hw/display/virtio-gpu-base.c b/hw/display/virtio-gpu-base.c
index 6c5f1f327f..7913d9b82e 100644
--- a/hw/display/virtio-gpu-base.c
+++ b/hw/display/virtio-gpu-base.c
@@ -206,7 +206,8 @@ virtio_gpu_base_get_features(VirtIODevice *vdev, uint64_t features,
 {
     VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev);
 
-    if (virtio_gpu_virgl_enabled(g->conf)) {
+    if (virtio_gpu_virgl_enabled(g->conf) ||
+        virtio_gpu_rutabaga_enabled(g->conf)) {
         features |= (1 << VIRTIO_GPU_F_VIRGL);
     }
     if (virtio_gpu_edid_enabled(g->conf)) {
diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c
index 15270b0c8a..fc09900ed9 100644
--- a/hw/display/virtio-gpu-gl.c
+++ b/hw/display/virtio-gpu-gl.c
@@ -23,7 +23,14 @@
 
 static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp)
 {
-    virtio_gpu_virgl_device_realize(qdev, errp);
+    VirtIOGPUGL *virtio_gpu = VIRTIO_GPU_GL(qdev);
+    virtio_gpu->rutabaga = NULL;
+    virtio_gpu_rutabaga_device_realize(qdev, errp);
+
+    /* Fallback to virgl if rutabaga fails to initialize */
+    if (!virtio_gpu->rutabaga) {
+        virtio_gpu_virgl_device_realize(qdev, errp);
+    }
 }
 
 static Property virtio_gpu_gl_properties[] = {
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 938eed9181..3e92f9db6b 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -1314,8 +1314,9 @@ void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
     VirtIOGPU *g = VIRTIO_GPU(qdev);
 
     if (virtio_gpu_blob_enabled(g->parent_obj.conf)) {
-        if (!virtio_gpu_have_udmabuf()) {
-            error_setg(errp, "cannot enable blob resources without udmabuf");
+        if (!virtio_gpu_have_udmabuf() &&
+            !virtio_gpu_rutabaga_enabled(g->parent_obj.conf)) {
+            error_setg(errp, "need udmabuf or rutabaga for blob resources");
             return;
         }
 
-- 
2.40.0.634.g4ca3ef3211-goog