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This code has been successfully used to run the FECS-FRTS firmware from the bios and create the WPR2 region, although this series alone is not enough to reproduce this - the next revision will probably include the code required to extract that firmware from the BIOS. As for the previous revisions, the goal is to get more eyes to look at the general direction of the driver and raise concerns if there are any, the main point of discussion being probably the register!() macro that is used to define register layouts. The falcon code is still quite in a work-in-progress state, I am notably still thinking of the best way to implement the HAL for chip-dependent operations (right now we branch depending on the chipset, but that obviously won't scale). So the overall design is still very much flexible. Dependencies: - https://lore.kernel.org/rust-for-linux/20250318-topic-panthor-rs-genmask-v4-1-35004fca6ac5@collabora.com/ - https://lore.kernel.org/rust-for-linux/20250319-try_with-v2-0-822ec63c05fb@nvidia.com/ - https://lore.kernel.org/rust-for-linux/20250224115007.2072043-1-abdiel.janulgue@gmail.com/ - https://lore.kernel.org/rust-for-linux/20250306222336.23482-1-dakr@kernel.org/ - https://lore.kernel.org/rust-for-linux/20250320-registers-v2-1-d277409bcde8@nvidia.com/ TODO: - Document more registers and fields, - Add BIOS extractor code to obtain the FWSEC-FRTS firmware, - Complete FWSEC-FRTS execution to obtain WPR2 region. Signed-off-by: Alexandre Courbot --- Changes in v3: - Fixed typo in Boot0 register definition that made probing fail. - Moved the register definition macros to their own patch series. - Used Revocable::try_access_with() when accessing registers. - Added all the Falcon code required to boot FWSEC-FRTS. - Link to v2: https://lore.kernel.org/r/20250304-nova_timer-v2-0-8fb13f3f8cff@nvidia.com Changes in v2: - Don't hold the Bar guard in methods that can sleep. - Added a Timestamp type for Timer to safely and easily get durations between two measurements. - Added a macro to make register definitions easier. - Added a very basic falcon implementation to define more registers and exercise the register definition macro. - Link to v1: https://lore.kernel.org/r/20250217-nova_timer-v1-0-78c5ace2d987@nvidia.com --- Alexandre Courbot (7): rust: add useful ops for u64 rust: make ETIMEDOUT error available gpu: nova-core: derive useful traits for Chipset gpu: nova-core: add missing GA100 definition gpu: nova-core: use register!() to define register layout gpu: nova-core: add basic timer device gpu: nova-core: add falcon register definitions and probe code drivers/gpu/nova-core/driver.rs | 4 +- drivers/gpu/nova-core/falcon.rs | 618 +++++++++++++++++++++++++++++++++++++ drivers/gpu/nova-core/gpu.rs | 78 ++++- drivers/gpu/nova-core/nova_core.rs | 14 + drivers/gpu/nova-core/regs.rs | 261 ++++++++++++---- drivers/gpu/nova-core/timer.rs | 132 ++++++++ rust/kernel/error.rs | 1 + rust/kernel/lib.rs | 1 + rust/kernel/num.rs | 52 ++++ 9 files changed, 1101 insertions(+), 60 deletions(-) --- base-commit: 1d53763dc16c9fc9329a4cdc14d691979d47568f change-id: 20250216-nova_timer-c69430184f54 prerequisite-change-id: 20241023-topic-panthor-rs-genmask-fabc573fef43:v4 prerequisite-patch-id: 182945904fd914573eed9388a559ce8a642310ef prerequisite-message-id: <20250224115007.2072043-1-abdiel.janulgue@gmail.com> prerequisite-patch-id: 73f4047ae5d3e4d51cfa285bd8fd0f1c04d47409 prerequisite-patch-id: 5ad45352d9d457a45886eeea90a46cc21516356e prerequisite-patch-id: 725e7d42309919c759fdd0585a97810b1eb72706 prerequisite-message-id: <20250306222336.23482-1-dakr@kernel.org> prerequisite-patch-id: de15c0d16727e6af2d79f88f5b67be4c06212552 prerequisite-patch-id: f8bca95d983222da29508cc6e6886e4b0f992588 prerequisite-patch-id: 1ae8f68250fb43808342285a284bcf7b572263fe prerequisite-patch-id: fa5ce1308e1dbc71374a381537ab3978babe20a0 prerequisite-patch-id: 7225e000f745bb5fd45fc43393d801d1d9adb767 Best regards, -- Alexandre Courbot