[RFC QEMU PATCH 10/18] virtio-gpu: Handle set scanout blob command

[Huang Rui <ray.huang@xxxxxxx>]

From: Antonio Caggiano <antonio.caggiano@xxxxxxxxxxxxx>

Use mapped data pointer as data for the scanout.

Signed-off-by: Antonio Caggiano <antonio.caggiano@xxxxxxxxxxxxx>
---
 hw/display/virtio-gpu-virgl.c  |  3 +++
 hw/display/virtio-gpu.c        | 11 +++++++----
 include/hw/virtio/virtio-gpu.h |  2 ++
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
index f5ce206b93..1fe144f64d 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -653,6 +653,9 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
     case VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB:
         virgl_cmd_resource_create_blob(g, cmd);
         break;
+    case VIRTIO_GPU_CMD_SET_SCANOUT_BLOB:
+        virtio_gpu_set_scanout_blob(g, cmd);
+        break;
     case VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB:
         virgl_cmd_resource_map_blob(g, cmd);
         break;
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index c7d1e52cb5..1e334a1e78 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -144,7 +144,7 @@ virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t 
resource_id,
     }
 
     if (require_backing) {
-        if (!res->iov || (!res->image && !res->blob)) {
+        if (!res->iov || (!res->image && !res->blob) || !res->mapped) {
             qemu_log_mask(LOG_GUEST_ERROR, "%s: no backing storage %d\n",
                           caller, resource_id);
             if (error) {
@@ -637,7 +637,10 @@ static void virtio_gpu_do_set_scanout(VirtIOGPU *g,
         }
 
         data = res->blob;
-    } else {
+    } else if (res->mapped) {
+        data = (uint8_t *)res->mapped;
+    }
+    else {
         data = (uint8_t *)pixman_image_get_data(res->image);
     }
 
@@ -714,8 +717,8 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g,
                               &fb, res, &ss.r, &cmd->error);
 }
 
-static void virtio_gpu_set_scanout_blob(VirtIOGPU *g,
-                                        struct virtio_gpu_ctrl_command *cmd)
+void virtio_gpu_set_scanout_blob(VirtIOGPU *g,
+                                 struct virtio_gpu_ctrl_command *cmd)
 {
     struct virtio_gpu_simple_resource *res;
     struct virtio_gpu_framebuffer fb = { 0 };
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index 0a44aea4ee..ce49cdfafb 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -284,6 +284,8 @@ void virtio_gpu_simple_process_cmd(VirtIOGPU *g, struct 
virtio_gpu_ctrl_command
 void virtio_gpu_update_cursor_data(VirtIOGPU *g,
                                    struct virtio_gpu_scanout *s,
                                    uint32_t resource_id);
+void virtio_gpu_set_scanout_blob(VirtIOGPU *g,
+                                 struct virtio_gpu_ctrl_command *cmd);
 
 /* virtio-gpu-udmabuf.c */
 bool virtio_gpu_have_udmabuf(void);
-- 
2.25.1