[RFC QEMU PATCH 17/18] virtio-gpu: Add video hardware accelerate support for virgl

[Huang Rui <ray.huang@xxxxxxx>]

From: Honglei Huang <honglei1.huang@xxxxxxx>

Add get_drm_fd callback let the guest OS can get render node to using hw accel 
codec.

Signed-off-by: Honglei Huang <honglei1.huang@xxxxxxx>
Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
---
 hw/display/virtio-gpu-virgl.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
index d5214e0f43..aef735a427 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -13,6 +13,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu/iov.h"
+#include "qemu/drm.h"
 #include "trace.h"
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-gpu.h"
@@ -827,12 +828,22 @@ static int virgl_make_context_current(void *opaque, int 
scanout_idx,
                                    qctx);
 }
 
+static int virgl_get_drm_fd(void *opaque)
+{
+    int fd = -1;
+
+    fd = qemu_drm_rendernode_open(NULL);
+
+    return fd;
+}
+
 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
     .version             = 1,
     .write_fence         = virgl_write_fence,
     .create_gl_context   = virgl_create_context,
     .destroy_gl_context  = virgl_destroy_context,
     .make_current        = virgl_make_context_current,
+    .get_drm_fd          = virgl_get_drm_fd,
 };
 
 static void virtio_gpu_print_stats(void *opaque)
@@ -886,14 +897,20 @@ void virtio_gpu_virgl_reset(VirtIOGPU *g)
     virgl_renderer_reset();
 }
 
+
+
 int virtio_gpu_virgl_init(VirtIOGPU *g)
 {
     int ret;
 
+#ifndef VIRGL_RENDERER_USE_VIDEO
+#define VIRGL_RENDERER_USE_VIDEO (1 << 11)
+#endif
+
 #ifdef VIRGL_RENDERER_VENUS
-    ret = virgl_renderer_init(g, VIRGL_RENDERER_VENUS, &virtio_gpu_3d_cbs);
+    ret = virgl_renderer_init(g, VIRGL_RENDERER_VENUS | 
VIRGL_RENDERER_USE_VIDEO, &virtio_gpu_3d_cbs);
 #else
-    ret = virgl_renderer_init(g, 0, &virtio_gpu_3d_cbs);
+    ret = virgl_renderer_init(g, 0 | VIRGL_RENDERER_USE_VIDEO, 
&virtio_gpu_3d_cbs);
 #endif
     if (ret != 0) {
         error_report("virgl could not be initialized: %d", ret);
-- 
2.25.1