[v12,13/13] virtio-gpu: Support Venus context

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

Request Venus when initializing VirGL and if venus=true flag is set for
virtio-gpu-gl device.

Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
 hw/display/virtio-gpu-gl.c     |  2 ++
 hw/display/virtio-gpu-virgl.c  | 22 ++++++++++++++++++----
 hw/display/virtio-gpu.c        | 13 +++++++++++++
 include/hw/virtio/virtio-gpu.h |  3 +++
 meson.build                    |  1 +
 5 files changed, 37 insertions(+), 4 deletions(-)

On Mon, 20 May 2024 00:27, Dmitry Osipenko <dmitry.osipenko@collabora.com> wrote:
>From: Antonio Caggiano <antonio.caggiano@collabora.com>
>
>Request Venus when initializing VirGL and if venus=true flag is set for
>virtio-gpu-gl device.
>
>Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com>
>Signed-off-by: Huang Rui <ray.huang@amd.com>
>Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
>---
> hw/display/virtio-gpu-gl.c     |  2 ++
> hw/display/virtio-gpu-virgl.c  | 22 ++++++++++++++++++----
> hw/display/virtio-gpu.c        | 13 +++++++++++++
> include/hw/virtio/virtio-gpu.h |  3 +++
> meson.build                    |  1 +
> 5 files changed, 37 insertions(+), 4 deletions(-)
>
>diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c
>index b8f395be8d2d..2078e74050bb 100644
>--- a/hw/display/virtio-gpu-gl.c
>+++ b/hw/display/virtio-gpu-gl.c
>@@ -148,6 +148,8 @@ static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp)
> static Property virtio_gpu_gl_properties[] = {
>     DEFINE_PROP_BIT("stats", VirtIOGPU, parent_obj.conf.flags,
>                     VIRTIO_GPU_FLAG_STATS_ENABLED, false),
>+    DEFINE_PROP_BIT("venus", VirtIOGPU, parent_obj.conf.flags,
>+                    VIRTIO_GPU_FLAG_VENUS_ENABLED, false),
>     DEFINE_PROP_END_OF_LIST(),
> };
> 
>diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
>index 70e2d28ba966..2e9862dd186a 100644
>--- a/hw/display/virtio-gpu-virgl.c
>+++ b/hw/display/virtio-gpu-virgl.c
>@@ -1130,6 +1130,11 @@ int virtio_gpu_virgl_init(VirtIOGPU *g)
>         flags |= VIRGL_RENDERER_D3D11_SHARE_TEXTURE;
>     }
> #endif
>+#ifdef VIRGL_RENDERER_VENUS
>+    if (virtio_gpu_venus_enabled(g->parent_obj.conf)) {
>+        flags |= VIRGL_RENDERER_VENUS | VIRGL_RENDERER_RENDER_SERVER;
>+    }
>+#endif
> 
>     ret = virgl_renderer_init(g, flags, &virtio_gpu_3d_cbs);
>     if (ret != 0) {
>@@ -1161,7 +1166,7 @@ static void virtio_gpu_virgl_add_capset(GArray *capset_ids, uint32_t capset_id)
> 
> GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g)
> {
>-    uint32_t capset2_max_ver, capset2_max_size;
>+    uint32_t capset_max_ver, capset_max_size;
>     GArray *capset_ids;
> 
>     capset_ids = g_array_new(false, false, sizeof(uint32_t));
>@@ -1170,12 +1175,21 @@ GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g)
>     virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_VIRGL);
> 
>     virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VIRGL2,
>-                              &capset2_max_ver,
>-                              &capset2_max_size);
>-    if (capset2_max_ver) {
>+                               &capset_max_ver,
>+                               &capset_max_size);
>+    if (capset_max_ver) {
>         virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_VIRGL2);
>     }
> 
>+    if (virtio_gpu_venus_enabled(g->parent_obj.conf)) {
>+        virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VENUS,
>+                                   &capset_max_ver,
>+                                   &capset_max_size);
>+        if (capset_max_size) {
>+            virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_VENUS);
>+        }
>+    }
>+
>     return capset_ids;
> }
> 
>diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
>index 052ab493a00b..0518bb858e88 100644
>--- a/hw/display/virtio-gpu.c
>+++ b/hw/display/virtio-gpu.c
>@@ -1491,6 +1491,19 @@ void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
> #endif
>     }
> 
>+    if (virtio_gpu_venus_enabled(g->parent_obj.conf)) {
>+#ifdef HAVE_VIRGL_VENUS
>+        if (!virtio_gpu_blob_enabled(g->parent_obj.conf) ||
>+            !virtio_gpu_hostmem_enabled(g->parent_obj.conf)) {
>+            error_setg(errp, "venus requires enabled blob and hostmem options");
>+            return;
>+        }
>+#else
>+        error_setg(errp, "old virglrenderer, venus unsupported");
>+        return;
>+#endif
>+    }
>+
>     if (!virtio_gpu_base_device_realize(qdev,
>                                         virtio_gpu_handle_ctrl_cb,
>                                         virtio_gpu_handle_cursor_cb,
>diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
>index 7e1fee836802..ec5d7517f141 100644
>--- a/include/hw/virtio/virtio-gpu.h
>+++ b/include/hw/virtio/virtio-gpu.h
>@@ -99,6 +99,7 @@ enum virtio_gpu_base_conf_flags {
>     VIRTIO_GPU_FLAG_BLOB_ENABLED,
>     VIRTIO_GPU_FLAG_CONTEXT_INIT_ENABLED,
>     VIRTIO_GPU_FLAG_RUTABAGA_ENABLED,
>+    VIRTIO_GPU_FLAG_VENUS_ENABLED,
> };
> 
> #define virtio_gpu_virgl_enabled(_cfg) \
>@@ -117,6 +118,8 @@ enum virtio_gpu_base_conf_flags {
>     (_cfg.flags & (1 << VIRTIO_GPU_FLAG_RUTABAGA_ENABLED))
> #define virtio_gpu_hostmem_enabled(_cfg) \
>     (_cfg.hostmem > 0)
>+#define virtio_gpu_venus_enabled(_cfg) \
>+    (_cfg.flags & (1 << VIRTIO_GPU_FLAG_VENUS_ENABLED))
> 

Can we have both venus and rutabaga enabled on the same virtio-gpu 
device? How would that work? It seems to me they should be mutually 
exclusive.


> struct virtio_gpu_base_conf {
>     uint32_t max_outputs;
>diff --git a/meson.build b/meson.build
>index 503a7736eda0..5a2b7b660c67 100644
>--- a/meson.build
>+++ b/meson.build
>@@ -2305,6 +2305,7 @@ if virgl.version().version_compare('>=1.0.0')
>   config_host_data.set('HAVE_VIRGL_D3D_INFO_EXT', 1)
>   config_host_data.set('HAVE_VIRGL_CONTEXT_CREATE_WITH_FLAGS', 1)
>   config_host_data.set('HAVE_VIRGL_RESOURCE_BLOB', 1)
>+  config_host_data.set('HAVE_VIRGL_VENUS', 1)
> endif
> config_host_data.set('CONFIG_VIRTFS', have_virtfs)
> config_host_data.set('CONFIG_VTE', vte.found())
>-- 
>2.44.0
>
>

On 5/23/24 10:18, Manos Pitsidianakis wrote:
>> #define virtio_gpu_hostmem_enabled(_cfg) \
>>     (_cfg.hostmem > 0)
>> +#define virtio_gpu_venus_enabled(_cfg) \
>> +    (_cfg.flags & (1 << VIRTIO_GPU_FLAG_VENUS_ENABLED))
>>
> 
> Can we have both venus and rutabaga enabled on the same virtio-gpu
> device? How would that work? It seems to me they should be mutually
> exclusive.

virtio-gpu-gl and virtio-gpu-rutabaga are separate device types. You
can't enable venus for rutabaga device because it doesn't support venus
and vice versa, Qemu will tell you that flag is invalid.