Merge tag 'nova-next-v6.16-2025-05-20' of https://gitlab.freedesktop.org/drm/nova into drm-next

Nova changes for v6.16

auxiliary:
  - bus abstractions
  - implementation for driver registration
  - add sample driver

drm:
  - implement __drm_dev_alloc()
  - DRM core infrastructure Rust abstractions
    - device, driver and registration
    - DRM IOCTL
    - DRM File
    - GEM object
  - IntoGEMObject rework
    - generically implement AlwaysRefCounted through IntoGEMObject
    - refactor unsound from_gem_obj() into as_ref()
    - refactor into_gem_obj() into as_raw()

driver-core:
  - merge topic/device-context-2025-04-17 from driver-core tree
  - implement Devres::access()
    - fix: doctest build under `!CONFIG_PCI`
  - accessor for Device::parent()
    - fix: conditionally expect `dead_code` for `parent()`
  - impl TryFrom<&Device> bus devices (PCI, platform)

nova-core:
  - remove completed Vec extentions from task list
  - register auxiliary device for nova-drm
  - derive useful traits for Chipset
  - add missing GA100 chipset
  - take &Device<Bound> in Gpu::new()
  - infrastructure to generate register definitions
  - fix register layout of NV_PMC_BOOT_0
  - move Firmware into own (Rust) module
  - fix: select AUXILIARY_BUS

nova-drm:
  - initial driver skeleton (depends on drm and auxiliary bus
    abstractions)
  - fix: select AUXILIARY_BUS

Rust (dependencies):
  - implement Opaque::zeroed()
  - implement Revocable::try_access_with()
  - implement Revocable::access()

From: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/aCxAf3RqQAXLDhAj@cassiopeiae

1 files changed, 40 insertions, 4 deletions

diff --git a/drivers/gpu/nova-core/firmware.rs b/drivers/gpu/nova-core/firmware.rs
index 6e6361c59ca1..4b8a38358a4f 100644
--- a/drivers/gpu/nova-core/firmware.rs
+++ b/drivers/gpu/nova-core/firmware.rs
@@ -1,13 +1,49 @@
 // SPDX-License-Identifier: GPL-2.0
 
-use crate::gpu;
+//! Contains structures and functions dedicated to the parsing, building and patching of firmwares
+//! to be loaded into a given execution unit.
+
+use kernel::device;
 use kernel::firmware;
+use kernel::prelude::*;
+use kernel::str::CString;
+
+use crate::gpu;
+use crate::gpu::Chipset;
+
+pub(crate) const FIRMWARE_VERSION: &str = "535.113.01";
+
+/// Structure encapsulating the firmware blobs required for the GPU to operate.
+#[expect(dead_code)]
+pub(crate) struct Firmware {
+    booter_load: firmware::Firmware,
+    booter_unload: firmware::Firmware,
+    bootloader: firmware::Firmware,
+    gsp: firmware::Firmware,
+}
+
+impl Firmware {
+    pub(crate) fn new(dev: &device::Device, chipset: Chipset, ver: &str) -> Result<Firmware> {
+        let mut chip_name = CString::try_from_fmt(fmt!("{}", chipset))?;
+        chip_name.make_ascii_lowercase();
+
+        let request = |name_| {
+            CString::try_from_fmt(fmt!("nvidia/{}/gsp/{}-{}.bin", &*chip_name, name_, ver))
+                .and_then(|path| firmware::Firmware::request(&path, dev))
+        };
+
+        Ok(Firmware {
+            booter_load: request("booter_load")?,
+            booter_unload: request("booter_unload")?,
+            bootloader: request("bootloader")?,
+            gsp: request("gsp")?,
+        })
+    }
+}
 
 pub(crate) struct ModInfoBuilder<const N: usize>(firmware::ModInfoBuilder<N>);
 
 impl<const N: usize> ModInfoBuilder<N> {
-    const VERSION: &'static str = "535.113.01";
-
     const fn make_entry_file(self, chipset: &str, fw: &str) -> Self {
         ModInfoBuilder(
             self.0
@@ -17,7 +53,7 @@ impl<const N: usize> ModInfoBuilder<N> {
                 .push("/gsp/")
                 .push(fw)
                 .push("-")
-                .push(Self::VERSION)
+                .push(FIRMWARE_VERSION)
                 .push(".bin"),
         )
     }