gfxstream + rutabaga: enable rutabaga

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

Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Alyssa Ross <hi@alyssa.is>
Tested-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Antonio Caggiano <quic_acaggian@quicinc.com>
Reviewed-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>

hw/display/virtio-gpu-base.c

@@ -223,7 +223,8 @@ 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)) {

hw/display/virtio-gpu.c

@@ -1363,8 +1363,9 @@ 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_rutabaga_enabled(g->parent_obj.conf) &&
+            !virtio_gpu_have_udmabuf()) {
+            error_setg(errp, "need rutabaga or udmabuf for blob resources");
             return;
         }
 

system/qdev-monitor.c

@@ -86,6 +86,9 @@ static const QDevAlias qdev_alias_table[] = {
     { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_VIRTIO_PCI },
     { "virtio-gpu-gl-device", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_MMIO },
     { "virtio-gpu-gl-pci", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_PCI },
+    { "virtio-gpu-rutabaga-device", "virtio-gpu-rutabaga",
+      QEMU_ARCH_VIRTIO_MMIO },
+    { "virtio-gpu-rutabaga-pci", "virtio-gpu-rutabaga", QEMU_ARCH_VIRTIO_PCI },
     { "virtio-input-host-device", "virtio-input-host", QEMU_ARCH_VIRTIO_MMIO },
     { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_VIRTIO_CCW },
     { "virtio-input-host-pci", "virtio-input-host", QEMU_ARCH_VIRTIO_PCI },

system/vl.c

@@ -216,6 +216,7 @@ static struct {
     { .driver = "ati-vga",              .flag = &default_vga       },
     { .driver = "vhost-user-vga",       .flag = &default_vga       },
     { .driver = "virtio-vga-gl",        .flag = &default_vga       },
+    { .driver = "virtio-vga-rutabaga",  .flag = &default_vga       },
 };
 
 static QemuOptsList qemu_rtc_opts = {