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

5 files changed, 58 insertions, 0 deletions

diff --git a/rust/helpers/auxiliary.c b/rust/helpers/auxiliary.c
new file mode 100644
index 000000000000..0db3860d774e
--- /dev/null
+++ b/rust/helpers/auxiliary.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/auxiliary_bus.h>
+
+void rust_helper_auxiliary_set_drvdata(struct auxiliary_device *adev, void *data)
+{
+	auxiliary_set_drvdata(adev, data);
+}
+
+void *rust_helper_auxiliary_get_drvdata(struct auxiliary_device *adev)
+{
+	return auxiliary_get_drvdata(adev);
+}
+
+void rust_helper_auxiliary_device_uninit(struct auxiliary_device *adev)
+{
+	return auxiliary_device_uninit(adev);
+}
+
+void rust_helper_auxiliary_device_delete(struct auxiliary_device *adev)
+{
+	return auxiliary_device_delete(adev);
+}
diff --git a/rust/helpers/drm.c b/rust/helpers/drm.c
new file mode 100644
index 000000000000..450b406c6f27
--- /dev/null
+++ b/rust/helpers/drm.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <drm/drm_gem.h>
+#include <drm/drm_vma_manager.h>
+
+#ifdef CONFIG_DRM
+
+void rust_helper_drm_gem_object_get(struct drm_gem_object *obj)
+{
+	drm_gem_object_get(obj);
+}
+
+void rust_helper_drm_gem_object_put(struct drm_gem_object *obj)
+{
+	drm_gem_object_put(obj);
+}
+
+__u64 rust_helper_drm_vma_node_offset_addr(struct drm_vma_offset_node *node)
+{
+	return drm_vma_node_offset_addr(node);
+}
+
+#endif
diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index 1e7c84df7252..c228a5363212 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -7,6 +7,7 @@
  * Sorted alphabetically.
  */
 
+#include "auxiliary.c"
 #include "blk.c"
 #include "bug.c"
 #include "build_assert.c"
@@ -15,6 +16,7 @@
 #include "cred.c"
 #include "device.c"
 #include "dma.c"
+#include "drm.c"
 #include "err.c"
 #include "fs.c"
 #include "io.c"
diff --git a/rust/helpers/pci.c b/rust/helpers/pci.c
index 8ba22f911459..cd0e6bf2cc4d 100644
--- a/rust/helpers/pci.c
+++ b/rust/helpers/pci.c
@@ -16,3 +16,8 @@ resource_size_t rust_helper_pci_resource_len(struct pci_dev *pdev, int bar)
 {
 	return pci_resource_len(pdev, bar);
 }
+
+bool rust_helper_dev_is_pci(const struct device *dev)
+{
+	return dev_is_pci(dev);
+}
diff --git a/rust/helpers/platform.c b/rust/helpers/platform.c
index ab9b9f317301..82171233d12f 100644
--- a/rust/helpers/platform.c
+++ b/rust/helpers/platform.c
@@ -11,3 +11,8 @@ void rust_helper_platform_set_drvdata(struct platform_device *pdev, void *data)
 {
 	platform_set_drvdata(pdev, data);
 }
+
+bool rust_helper_dev_is_platform(const struct device *dev)
+{
+	return dev_is_platform(dev);
+}