[QEMU PATCH v5 11/13] virtio-gpu: Support Venus capset

[Huang Rui <ray.huang@amd.com>]

From: Antonio Caggiano <antonio.caggiano@collabora.com>

Add support for the Venus capset, which enables Vulkan support through
the Venus Vulkan driver for virtio-gpu.

Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
---

V4 -> V5:
    - Send kernel patch to define VIRTIO_GPU_CAPSET_VENUS and will use
      another patch to sync up linux headers. (Akihiko)
    - https://lore.kernel.org/lkml/20230915105918.3763061-1-ray.huang@amd.com/

 hw/display/virtio-gpu-virgl.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
index 8a017dbeb4..7f95490e90 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -437,6 +437,11 @@ static void virgl_cmd_get_capset_info(VirtIOGPU *g,
         virgl_renderer_get_cap_set(resp.capset_id,
                                    &resp.capset_max_version,
                                    &resp.capset_max_size);
+    } else if (info.capset_index == 2) {
+        resp.capset_id = VIRTIO_GPU_CAPSET_VENUS;
+        virgl_renderer_get_cap_set(resp.capset_id,
+                                   &resp.capset_max_version,
+                                   &resp.capset_max_size);
     } else {
         resp.capset_max_version = 0;
         resp.capset_max_size = 0;
@@ -901,10 +906,18 @@ int virtio_gpu_virgl_init(VirtIOGPU *g)
 
 int virtio_gpu_virgl_get_num_capsets(VirtIOGPU *g)
 {
-    uint32_t capset2_max_ver, capset2_max_size;
+    uint32_t capset2_max_ver, capset2_max_size, num_capsets;
+    num_capsets = 1;
+
     virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VIRGL2,
-                              &capset2_max_ver,
-                              &capset2_max_size);
+                               &capset2_max_ver,
+                               &capset2_max_size);
+    num_capsets += capset2_max_ver ? 1 : 0;
+
+    virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VENUS,
+                               &capset2_max_ver,
+                               &capset2_max_size);
+    num_capsets += capset2_max_size ? 1 : 0;
 
-    return capset2_max_ver ? 2 : 1;
+    return num_capsets;
 }
-- 
2.34.1