gpu: nova-core: add initial driver stub

Add the initial nova-core driver stub.

nova-core is intended to serve as a common base for nova-drm (the
corresponding DRM driver) and the vGPU manager VFIO driver, serving as a
hard- and firmware abstraction layer for GSP-based NVIDIA GPUs.

The Nova project, including nova-core and nova-drm, in the long term,
is intended to serve as the successor of Nouveau for all GSP-based GPUs.

The motivation for both, starting a successor project for Nouveau and
doing so using the Rust programming language, is documented in detail
through a previous post on the mailing list [1], an LWN article [2] and a
talk from LPC '24.

In order to avoid the chicken and egg problem to require a user to
upstream Rust abstractions, but at the same time require the Rust
abstractions to implement the driver, nova-core kicks off as a driver
stub and is subsequently developed upstream.

Link: https://lore.kernel.org/dri-devel/Zfsj0_tb-0-tNrJy@cassiopeiae/T/#u [1]
Link: https://lwn.net/Articles/990736/ [2]
Link: https://youtu.be/3Igmx28B3BQ?si=sBdSEer4tAPKGpOs [3]
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250306222336.23482-5-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/nova-core/nova_core.rs b/drivers/gpu/nova-core/nova_core.rs
new file mode 100644
index 000000000000..a91cd924054b
--- /dev/null
+++ b/drivers/gpu/nova-core/nova_core.rs
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+
+//! Nova Core GPU Driver
+
+mod driver;
+mod firmware;
+mod gpu;
+mod regs;
+mod util;
+
+kernel::module_pci_driver! {
+    type: driver::NovaCore,
+    name: "NovaCore",
+    author: "Danilo Krummrich",
+    description: "Nova Core GPU driver",
+    license: "GPL v2",
+    firmware: [],
+}
+
+kernel::module_firmware!(firmware::ModInfoBuilder);