Update nova/Makefile and nova-core/Makefile so that nova-drm.ko and
nova-core.ko are produced, matching the module names set in patch 1.
Update drm::DriverInfo with the correct driver name and vendor
description. Fix Kconfig help text for both drivers and the debugfs
directory name in nova-core to match the new module names.
Closes: https://github.com/Rust-for-Linux/linux/issues/1228
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Link: https://patch.msgid.link/20260507185012.1527139-3-yphbchou0911@gmail.com
[ Change commit subject to "gpu: nova: Use module names consistently";
slightly adjust commit message. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
The driver already assumes little endian in a lot of locations. For
example, all the code that reads RPCs out of the command queue just
directly interprets the bytes.
Make this explicit in Kconfig.
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Link: https://patch.msgid.link/20260407-fix-kconfig-v2-1-6b4fb06c690c@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
The nova-drm driver does not provide any value without nova-core being
selected as well, hence select NOVA_CORE.
Fixes: cdeaeb9dd7 ("drm: nova-drm: add initial driver skeleton")
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Link: https://patch.msgid.link/20251028110058.340320-2-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
CONFIG_AUXILIARY_BUS cannot be enabled explicitly, and unless we select
it we have no way to include it (and thus to enable NOVA_DRM) unless
another driver happens to do it for us.
Fixes: cdeaeb9dd7 ("drm: nova-drm: add initial driver skeleton")
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250515-aux_bus-v2-3-47c70f96ae9b@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Add the initial nova-drm driver skeleton.
nova-drm is connected to nova-core through the auxiliary bus and
implements the DRM parts of the nova driver stack.
For now, it implements the fundamental DRM abstractions, i.e. creates a
DRM device and registers it, exposing a three sample IOCTLs.
DRM_IOCTL_NOVA_GETPARAM
- provides the PCI bar size from the bar that maps the GPUs VRAM
from nova-core
DRM_IOCTL_NOVA_GEM_CREATE
- creates a new dummy DRM GEM object and returns a handle
DRM_IOCTL_NOVA_GEM_INFO
- provides metadata for the DRM GEM object behind a given handle
I implemented a small userspace test suite [1] that utilizes this
interface.
Link: https://gitlab.freedesktop.org/dakr/drm-test [1]
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Dave Airlie <airlied@redhat.com>
Link: https://lore.kernel.org/r/20250424160452.8070-3-dakr@kernel.org
[ Kconfig: depend on DRM=y rather than just DRM. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
