Nouveau - Sep 2024 - [RFC 06/29] nvkm/vgpu: set RMSetSriovMode when NVIDIA vGPU is enabled

The registry object "RMSetSriovMode" is required to be set when vGPU
is
enabled.

Set "RMSetSriovMode" to 1 when nvkm is loading the GSP firmware and
initialize the GSP registry objects, if vGPU is enabled.

Cc: Neo Jia <cjia at nvidia.com>
Cc: Surath Mitra <smitra at nvidia.com>
Signed-off-by: Zhi Wang <zhiw at nvidia.com>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c
index 49552d7df88f..a7db2a7880dd 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c
@@ -1500,6 +1500,9 @@ r535_gsp_rpc_set_registry(struct nvkm_gsp *gsp)
 		kfree(p);
 	}
 
+	if (nvkm_vgpu_mgr_is_supported(gsp->subdev.device))
+		add_registry_num(gsp, "RMSetSriovMode", 1);
+
 	rpc = nvkm_gsp_rpc_get(gsp, NV_VGPU_MSG_FUNCTION_SET_REGISTRY,
gsp->registry_rpc_size);
 	if (IS_ERR(rpc)) {
 		ret = PTR_ERR(rpc);
-- 
2.34.1

On Sun, Sep 22, 2024 at 05:49:28AM -0700, Zhi Wang
wrote:
> The registry object "RMSetSriovMode" is required to be set when
vGPU is
> enabled.
> 
> Set "RMSetSriovMode" to 1 when nvkm is loading the GSP firmware
and
> initialize the GSP registry objects, if vGPU is enabled.
Also really weird, this sounds like what the PCI sriov enable is for.

Jason