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Pull drm updates from Dave Airlie:
"As part of building up nova-core/nova-drm pieces we've brought in some
rust abstractions through this tree, aux bus being the main one, with
devres changes also in the driver-core tree. Along with the drm core
abstractions and enough nova-core/nova-drm to use them. This is still
all stub work under construction, to build the nova driver upstream.
The other big NVIDIA related one is nouveau adds support for
Hopper/Blackwell GPUs, this required a new GSP firmware update to
570.144, and a bunch of rework in order to support multiple fw
interfaces.
There is also the introduction of an asahi uapi header file as a
precursor to getting the real driver in later, but to unblock
userspace mesa packages while the driver is trapped behind rust
enablement.
Otherwise it's the usual mixture of stuff all over, amdgpu, i915/xe,
and msm being the main ones, and some changes to vsprintf.
new drivers:
- bring in the asahi uapi header standalone
- nova-drm: stub driver
rust dependencies (for nova-core):
- auxiliary
- bus abstractions
- driver registration
- sample driver
- devres changes from driver-core
- revocable changes
core:
- add Apple fourcc modifiers
- add virtio capset definitions
- extend EXPORT_SYNC_FILE for timeline syncobjs
- convert to devm_platform_ioremap_resource
- refactor shmem helper page pinning
- DP powerup/down link helpers
- extended %p4cc in vsprintf.c to support fourcc prints
- change vsprintf %p4cn to %p4chR, remove %p4cn
- Add drm_file_err function
- IN_FORMATS_ASYNC property
- move sitronix from tiny to their own subdir
rust:
- add drm core infrastructure rust abstractions
(device/driver, ioctl, file, gem)
dma-buf:
- adjust sg handling to not cache map on attach
- allow setting dma-device for import
- Add a helper to sort and deduplicate dma_fence arrays
docs:
- updated drm scheduler docs
- fbdev todo update
- fb rendering
- actual brightness
ttm:
- fix delayed destroy resv object
bridge:
- add kunit tests
- convert tc358775 to atomic
- convert drivers to devm_drm_bridge_alloc
- convert rk3066_hdmi to bridge driver
scheduler:
- add kunit tests
panel:
- refcount panels to improve lifetime handling
- Powertip PH128800T004-ZZA01
- NLT NL13676BC25-03F, Tianma TM070JDHG34-00
- Himax HX8279/HX8279-D DDIC
- Visionox G2647FB105
- Sitronix ST7571
- ZOTAC rotation quirk
vkms:
- allow attaching more displays
i915:
- xe3lpd display updates
- vrr refactor
- intel_display struct conversions
- xe2hpd memory type identification
- add link rate/count to i915_display_info
- cleanup VGA plane handling
- refactor HDCP GSC
- fix SLPC wait boosting reference counting
- add 20ms delay to engine reset
- fix fence release on early probe errors
xe:
- SRIOV updates
- BMG PCI ID update
- support separate firmware for each GT
- SVM fix, prelim SVM multi-device work
- export fan speed
- temp disable d3cold on BMG
- backup VRAM in PM notifier instead of suspend/freeze
- update xe_ttm_access_memory to use GPU for non-visible access
- fix guc_info debugfs for VFs
- use copy_from_user instead of __copy_from_user
- append PCIe gen5 limitations to xe_firmware document
amdgpu:
- DSC cleanup
- DC Scaling updates
- Fused I2C-over-AUX updates
- DMUB updates
- Use drm_file_err in amdgpu
- Enforce isolation updates
- Use new dma_fence helpers
- USERQ fixes
- Documentation updates
- SR-IOV updates
- RAS updates
- PSP 12 cleanups
- GC 9.5 updates
- SMU 13.x updates
- VCN / JPEG SR-IOV updates
amdkfd:
- Update error messages for SDMA
- Userptr updates
- XNACK fixes
radeon:
- CIK doorbell cleanup
nouveau:
- add support for NVIDIA r570 GSP firmware
- enable Hopper/Blackwell support
nova-core:
- fix task list
- register definition infrastructure
- move firmware into own rust module
- register auxiliary device for nova-drm
nova-drm:
- initial driver skeleton
msm:
- GPU:
- ACD (adaptive clock distribution) for X1-85
- drop fictional address_space_size
- improve GMU HFI response time out robustness
- fix crash when throttling during boot
- DPU:
- use single CTL path for flushing on DPU 5.x+
- improve SSPP allocation code for better sharing
- Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550
- Added SAR2130P support
- Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660
- DP:
- switch to new audio helpers
- better LTTPR handling
- DSI:
- Added support for SA8775P
- Added SAR2130P support
- HDMI:
- Switched to use new helpers for ACR data
- Fixed old standing issue of HPD not working in some cases
amdxdna:
- add dma-buf support
- allow empty command submits
renesas:
- add dma-buf support
- add zpos, alpha, blend support
panthor:
- fail properly for NO_MMAP bos
- add SET_LABEL ioctl
- debugfs BO dumping support
imagination:
- update DT bindings
- support TI AM68 GPU
hibmc:
- improve interrupt handling and HPD support
virtio:
- add panic handler support
rockchip:
- add RK3588 support
- add DP AUX bus panel support
ivpu:
- add heartbeat based hangcheck
mediatek:
- prepares support for MT8195/99 HDMIv2/DDCv2
anx7625:
- improve HPD
tegra:
- speed up firmware loading
* tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel: (1627 commits)
drm/nouveau/tegra: Fix error pointer vs NULL return in nvkm_device_tegra_resource_addr()
drm/xe: Default auto_link_downgrade status to false
drm/xe/guc: Make creation of SLPC debugfs files conditional
drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue()
drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read
drm/i915/ptl: Use everywhere the correct DDI port clock select mask
drm/nouveau/kms: add support for GB20x
drm/dp: add option to disable zero sized address only transactions.
drm/nouveau: add support for GB20x
drm/nouveau/gsp: add hal for fifo.chan.doorbell_handle
drm/nouveau: add support for GB10x
drm/nouveau/gf100-: track chan progress with non-WFI semaphore release
drm/nouveau/nv50-: separate CHANNEL_GPFIFO handling out from CHANNEL_DMA
drm/nouveau: add helper functions for allocating pinned/cpu-mapped bos
drm/nouveau: add support for GH100
drm/nouveau: improve handling of 64-bit BARs
drm/nouveau/gv100-: switch to volta semaphore methods
drm/nouveau/gsp: support deeper page tables in COPY_SERVER_RESERVED_PDES
drm/nouveau/gsp: init client VMMs with NV0080_CTRL_DMA_SET_PAGE_DIRECTORY
drm/nouveau/gsp: fetch level shift and PDE from BAR2 VMM
...
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We will extend the firmware methods, so move it to its own module
instead to keep gpu.rs focused.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250507-nova-frts-v3-7-fcb02749754d@nvidia.com
[ Don't require a bound device, remove pub visibility from Firmware
fields, use FIRMWARE_VERSION consistently. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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The layout of NV_PMC_BOOT_0 has two small issues:
- The "chipset" field, while useful to identify a chip, is actually an
aggregate of two distinct fields named "architecture" and
"implementation".
- The "architecture" field is split, with its MSB being at a different
location than the rest of its bits.
Redefine the register layout to match its actual definition as provided
by OpenRM and expose the fully-constructed "architecture" field through
our own "Architecture" type. The "chipset" pseudo-field is also useful
to have, so keep providing it.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250507-nova-frts-v3-6-fcb02749754d@nvidia.com
[ Use Result from kernel::prelude. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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Add the register!() macro, which defines a given register's layout and
provide bit-field accessors with a way to convert them to a given type.
This macro will allow us to make clear definitions of the registers and
manipulate their fields safely.
The long-term goal is to eventually move it to the kernel crate so it
can be used by other drivers as well, but it was agreed to first land it
into nova-core and make it mature there.
To illustrate its usage, use it to define the layout for the Boot0
(renamed to NV_PMC_BOOT_0 to match OpenRM's naming scheme) and take
advantage of its accessors.
Suggested-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250507-nova-frts-v3-5-fcb02749754d@nvidia.com
[ Fix typo in commit message. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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We will need to perform things like allocating DMA memory during device
creation, so make sure to take the device context that will allow us to
perform these actions. This also allows us to use Devres::access to
obtain the BAR without holding a RCU lock.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250507-nova-frts-v3-4-fcb02749754d@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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linux-firmware contains a directory for GA100, and it is a defined
chipset in Nouveau.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250507-nova-frts-v3-3-fcb02749754d@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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We will commonly need to compare chipset versions, so derive the
ordering traits to make that possible. Also derive Copy and Clone since
passing Chipset by value will be more efficient than by reference.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250507-nova-frts-v3-2-fcb02749754d@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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Starting with Rust 1.88.0 (expected 2025-06-26) [1], `rustc` may move
back the `uninlined_format_args` to `style` from `pedantic` (it was
there waiting for rust-analyzer suppotr), and thus we will start to see
lints like:
warning: variables can be used directly in the `format!` string
--> rust/macros/kunit.rs:105:37
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105 | let kunit_wrapper_fn_name = format!("kunit_rust_wrapper_{}", test);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
help: change this to
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105 - let kunit_wrapper_fn_name = format!("kunit_rust_wrapper_{}", test);
105 + let kunit_wrapper_fn_name = format!("kunit_rust_wrapper_{test}");
There is even a case that is a pure removal:
warning: variables can be used directly in the `format!` string
--> rust/macros/module.rs:51:13
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51 | format!("{field}={content}\0", field = field, content = content)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
help: change this to
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51 - format!("{field}={content}\0", field = field, content = content)
51 + format!("{field}={content}\0")
The lints all seem like nice cleanups, thus just apply them.
We may want to disable `allow-mixed-uninlined-format-args` in the future.
Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs).
Link: https://github.com/rust-lang/rust-clippy/pull/14160 [1]
Acked-by: Benno Lossin <lossin@kernel.org>
Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20250502140237.1659624-6-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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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>
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