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Message-ID: <aRxtJC0D1pQUepF4@google.com>
Date: Tue, 18 Nov 2025 12:57:08 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Dave Airlie <airlied@...il.com>, Simona Vetter <simona.vetter@...ll.ch>
Cc: Danilo Krummrich <dakr@...nel.org>, Alexandre Courbot <acourbot@...dia.com>,
Daniel Almeida <daniel.almeida@...labora.com>, Miguel Ojeda <ojeda@...nel.org>,
nouveau@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
dim-tools@...ts.freedesktop.org
Subject: [PULL] DRM Rust changes for v6.19
Hi Dave and Sima,
Please pull the following DRM Rust changes.
Besides the DRM Rust changes, this PR also contains a few core Rust changes and
DRM GPUVM support for deferred vm_bo cleanup. The GPUVM change was landed
through this tree so that it could be used from Rust code, but unfortunately
the relevant Rust change did not land in time for this cycle.
The top commit gets rid of a conflict with the Rust tree. This conflict is what
caused the hack fix in the Nov 17th linux-next and I confirmed that the hack is
absent in the Nov 18th linux-next.
The drivers/gpu/nova-core/driver.rs file has a conflict with the driver-core
tree. Please see linux-next for the resolution:
https://lore.kernel.org/p/20251117160621.2043a859@canb.auug.org.au
- Alice
The following changes since commit 211ddde0823f1442e4ad052a2f30f050145ccada:
Linux 6.18-rc2 (2025-10-19 15:19:16 -1000)
are available in the Git repository at:
https://gitlab.freedesktop.org/drm/rust/kernel.git tags/drm-rust-next-2025-11-18
for you to fetch changes up to 77b686f688126a5f758b51441a03186e9eb1b0f1:
gpu: nova-core: make formatting compatible with rust tree (2025-11-17 12:56:36 +0000)
----------------------------------------------------------------
Cross-subsystem Changes:
Rust
- Make slice::as_flattened usable on all supported versions of rustc.
- Add FromBytes::from_bytes_prefix() method.
Core Changes:
- Update Tyr in MAINTAINERS file.
- Remove redundant device ptr from Rust GEM object.
- Change how AlwaysRefCounted is implemented for GEM objects.
- Add deferred vm_bo cleanup to GPUVM and use it in Panthor.
Driver Changes:
Nova Core
- Introduction of bitfield! macro, with support for different storage sizes
and custom visibility.
- Introduction of safe converters between integer types for which the
conversion is lossless.
- GSP initialized up to fully booted state on Ampere.
- Use more future-proof register for GPU identification.
- Various simplifications and optimizations.
Nova
- Select NOVA_CORE.
- Depend on CONFIG_64BIT.
----------------------------------------------------------------
Alexandre Courbot (19):
gpu: nova-core: register: use field type for Into implementation
gpu: nova-core: replace wait_on with kernel equivalents
gpu: nova-core: bitfield: simplify condition
gpu: nova-core: bitfield: simplify expression
gpu: nova-core: bitfield: remove BitOr implementation
gpu: nova-core: replace `as` with `from` conversions where possible
gpu: nova-core: vbios: do not use `as` when comparing BiosImageType
gpu: nova-core: use `try_from` instead of `as` for u32 conversions
rust: transmute: add `from_bytes_prefix` family of methods
gpu: nova-core: vbios: use FromBytes for PmuLookupTable header
gpu: nova-core: vbios: use FromBytes for PcirStruct
gpu: nova-core: vbios: use FromBytes for BitHeader
gpu: nova-core: vbios: use FromBytes for NpdeStruct
gpu: nova-core: add functions and traits for lossless integer conversions
gpu: nova-core: replace use of `as` with functions from `num`
gpu: nova-core: justify remaining uses of `as`
gpu: nova-core: compute layout of more framebuffer regions required for GSP
gpu: nova-core: num: add functions to safely convert a const value to a smaller type
rust: enable slice_flatten feature and provide it through an extension trait
Alice Ryhl (4):
drm/gpuvm: add deferred vm_bo cleanup
panthor: use drm_gpuva_unlink_defer()
Merge tag 'v6.18-rc2' into 'drm-rust-next'
gpu: nova-core: make formatting compatible with rust tree
Alistair Popple (11):
gpu: nova-core: Set correct DMA mask
gpu: nova-core: Create initial Gsp
gpu: nova-core: gsp: Create wpr metadata
gpu: nova-core: Add zeroable trait to bindings
gpu: nova-core: gsp: Add GSP command queue bindings and handling
gpu: nova-core: gsp: Create rmargs
gpu: nova-core: gsp: Add SetSystemInfo command
gpu: nova-core: gsp: Add SetRegistry command
gpu: nova-core: gsp: Boot GSP
gpu: nova-core: gsp: Wait for gsp initialization to complete
gpu: nova-core: gsp: Retrieve GSP static info to gather GPU information
Daniel del Castillo (4):
gpu: nova-core: Simplify `transmute` and `transmute_mut` in fwsec.rs
gpu: nova-core: Fix capitalization of some comments
gpu: nova-core: Simplify `DmaObject::from_data` in nova-core/dma.rs
Documentation: nova: Update the todo list
Danilo Krummrich (5):
gpu: nova-core: gsp: remove useless conversion
gpu: nova-core: gsp: do not unwrap() SGEntry
MAINTAINERS: add Tyr to DRM DRIVERS AND COMMON INFRASTRUCTURE [RUST]
drm: nova: depend on CONFIG_64BIT
drm: nova: select NOVA_CORE
Joel Fernandes (18):
gpu: nova-core: vbios: Rework BiosImage to be simpler
gpu: nova-core: bitfield: Move bitfield-specific code from register! into new macro
gpu: nova-core: bitfield: Add support for different storage widths
gpu: nova-core: bitfield: Add support for custom visibility
gpu: nova-core: Add a slice-buffer (sbuffer) datastructure
gpu: nova-core: falcon: Add support to check if RISC-V is active
gpu: nova-core: falcon: Add support to write firmware version
gpu: nova-core: falcon: Move waiting until halted to a helper
gpu: nova-core: falcon: Move start functionality into separate helper
gpu: nova-core: falcon: Move mbox functionalities into helper
gpu: nova-core: falcon: Move dma_reset functionality into helper
gpu: nova-core: gsp: Add support for checking if GSP reloaded
gpu: nova-core: Add bindings required by GSP sequencer
gpu: nova-core: Implement the GSP sequencer
gpu: nova-core: sequencer: Add register opcodes
gpu: nova-core: sequencer: Add delay opcode support
gpu: nova-core: sequencer: Implement basic core operations
gpu: nova-core: sequencer: Implement core resume operation
John Hubbard (10):
gpu: nova-core: regs: rename .alter() --> .update()
gpu: nova-core: Ada: basic GPU identification
gpu: nova-core: remove an unnecessary register read: HWCFG1
gpu: nova-core: remove unnecessary need_riscv, bar parameters
gpu: nova-core: apply the one "use" item per line policy
gpu: nova-core: implement Display for Spec
gpu: nova-core: prepare Spec and Revision types for boot0/boot42
gpu: nova-core: make Architecture behave as a u8 type
gpu: nova-core: add boot42 support for next-gen GPUs
gpu: nova-core: provide a clear error report for unsupported GPUs
Lyude Paul (3):
Partially revert "rust: drm: gem: Implement AlwaysRefCounted for all gem objects automatically"
rust: drm/gem: Remove Object.dev
rust/drm/gem: Fix missing header in `Object` rustdoc
Documentation/gpu/nova/core/todo.rst | 30 -
MAINTAINERS | 1 +
drivers/gpu/drm/drm_gpuvm.c | 190 +++++
drivers/gpu/drm/nova/Kconfig | 2 +
drivers/gpu/drm/panthor/panthor_mmu.c | 110 +--
drivers/gpu/nova-core/bitfield.rs | 330 ++++++++
drivers/gpu/nova-core/dma.rs | 34 +-
drivers/gpu/nova-core/driver.rs | 27 +-
drivers/gpu/nova-core/falcon.rs | 287 ++++---
drivers/gpu/nova-core/falcon/gsp.rs | 29 +-
drivers/gpu/nova-core/falcon/hal.rs | 14 +-
drivers/gpu/nova-core/falcon/hal/ga102.rs | 46 +-
drivers/gpu/nova-core/falcon/sec2.rs | 10 +-
drivers/gpu/nova-core/fb.rs | 100 ++-
drivers/gpu/nova-core/fb/hal.rs | 6 +-
drivers/gpu/nova-core/fb/hal/ga100.rs | 16 +-
drivers/gpu/nova-core/fb/hal/ga102.rs | 8 +-
drivers/gpu/nova-core/fb/hal/tu102.rs | 25 +-
drivers/gpu/nova-core/firmware.rs | 31 +-
drivers/gpu/nova-core/firmware/booter.rs | 78 +-
drivers/gpu/nova-core/firmware/fwsec.rs | 184 +++--
drivers/gpu/nova-core/firmware/gsp.rs | 53 +-
drivers/gpu/nova-core/firmware/riscv.rs | 34 +-
drivers/gpu/nova-core/gfw.rs | 48 +-
drivers/gpu/nova-core/gpu.rs | 117 ++-
drivers/gpu/nova-core/gsp.rs | 157 +++-
drivers/gpu/nova-core/gsp/boot.rs | 153 +++-
drivers/gpu/nova-core/gsp/cmdq.rs | 679 ++++++++++++++++
drivers/gpu/nova-core/gsp/commands.rs | 227 ++++++
drivers/gpu/nova-core/gsp/fw.rs | 923 ++++++++++++++++++++-
drivers/gpu/nova-core/gsp/fw/commands.rs | 128 +++
drivers/gpu/nova-core/gsp/fw/r570_144.rs | 6 +-
drivers/gpu/nova-core/gsp/fw/r570_144/bindings.rs | 950 ++++++++++++++++++++++
drivers/gpu/nova-core/gsp/sequencer.rs | 407 +++++++++
drivers/gpu/nova-core/nova_core.rs | 5 +
drivers/gpu/nova-core/num.rs | 217 +++++
drivers/gpu/nova-core/regs.rs | 93 ++-
drivers/gpu/nova-core/regs/macros.rs | 287 +------
drivers/gpu/nova-core/sbuffer.rs | 227 ++++++
drivers/gpu/nova-core/util.rs | 33 +-
drivers/gpu/nova-core/vbios.rs | 423 +++++-----
include/drm/drm_gpuvm.h | 16 +
init/Kconfig | 3 +
rust/kernel/drm/gem/mod.rs | 53 +-
rust/kernel/lib.rs | 4 +
rust/kernel/prelude.rs | 3 +
rust/kernel/slice.rs | 49 ++
rust/kernel/transmute.rs | 63 ++
48 files changed, 5783 insertions(+), 1133 deletions(-)
create mode 100644 drivers/gpu/nova-core/bitfield.rs
create mode 100644 drivers/gpu/nova-core/gsp/cmdq.rs
create mode 100644 drivers/gpu/nova-core/gsp/commands.rs
create mode 100644 drivers/gpu/nova-core/gsp/fw/commands.rs
create mode 100644 drivers/gpu/nova-core/gsp/sequencer.rs
create mode 100644 drivers/gpu/nova-core/num.rs
create mode 100644 drivers/gpu/nova-core/sbuffer.rs
create mode 100644 rust/kernel/slice.rs
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