linux/drivers/gpu/nova-core/falcon/hal, branch master

gpu: nova-core: add Falcon HAL method load_method()

2026-01-24T01:48:59Z

Some GPUs do not support using DMA to transfer code/data from system memory to Falcon memory, and instead must use programmed I/O (PIO). Add a function to the Falcon HAL to indicate whether a given GPU's Falcons support DMA for this purpose. Signed-off-by: Timur Tabi Reviewed-by: Gary Guo Acked-by: Danilo Krummrich Link: https://patch.msgid.link/20260122222848.2555890-10-ttabi@nvidia.com [acourbot@nvidia.com: add short code to call into the HAL.] [acourbot@nvidia.com: make `dma_load` private as per feedback.] Signed-off-by: Alexandre Courbot

gpu: nova-core: add NV_PFALCON_FALCON_ENGINE::reset_engine()

2026-01-23T23:45:13Z

Add a method for the NV_PFALCON_FALCON_ENGINE register that reset the Falcon, and update the reset_eng() HAL functions to use it. Signed-off-by: Timur Tabi Reviewed-by: Gary Guo Acked-by: Danilo Krummrich Link: https://patch.msgid.link/20260122222848.2555890-9-ttabi@nvidia.com Signed-off-by: Alexandre Courbot

gpu: nova-core: Add basic Turing HAL

2026-01-23T23:45:13Z

Add the basic HAL for recognizing Turing GPUs. This isn't enough to support booting GSP-RM on Turing, but it's a start. Note that GA100, which boots using the same method as Turing, is not supported yet. Signed-off-by: Timur Tabi Reviewed-by: John Hubbard Reviewed-by: Gary Guo Acked-by: Danilo Krummrich Link: https://patch.msgid.link/20260122222848.2555890-8-ttabi@nvidia.com Signed-off-by: Alexandre Courbot

gpu: nova-core: move some functions into the HAL

2026-01-23T23:45:13Z

A few Falcon methods are actually GPU-specific, so move them into the HAL. Signed-off-by: Timur Tabi Reviewed-by: John Hubbard Reviewed-by: Gary Guo Acked-by: Danilo Krummrich Link: https://patch.msgid.link/20260122222848.2555890-7-ttabi@nvidia.com Signed-off-by: Alexandre Courbot

gpu: nova-core: add missing newlines to several print strings

2026-01-12T13:44:06Z

Although the dev_xx!() macro calls do not technically require terminating newlines for the format strings, they should be added anyway to maintain consistency, both within Rust code and with the C versions. Signed-off-by: Timur Tabi Reviewed-by: John Hubbard Link: https://patch.msgid.link/20260107201647.2490140-2-ttabi@nvidia.com Signed-off-by: Danilo Krummrich

gpu: nova-core: apply the one "use" item per line policy

2025-11-07T14:10:44Z

As per [1], we need one "use" item per line, in order to reduce merge conflicts. Furthermore, we need a trailing ", //" in order to tell rustfmt(1) to leave it alone. This does that for the entire nova-core driver. [1] https://docs.kernel.org/rust/coding-guidelines.html#imports Acked-by: Danilo Krummrich Signed-off-by: John Hubbard [acourbot@nvidia.com: remove imports already in prelude as pointed out by Danilo.] [acourbot@nvidia.com: remove a few unneeded trailing `//`.] Signed-off-by: Alexandre Courbot Message-ID: <20251107021006.434109-1-jhubbard@nvidia.com>

gpu: nova-core: replace `as` with `from` conversions where possible

2025-10-30T01:35:34Z

The `as` operator is best avoided as it silently drops bits if the destination type is smaller that the source. For data types where this is clearly not the case, use `from` to unambiguously signal that these conversions are lossless. Acked-by: Danilo Krummrich Signed-off-by: Alexandre Courbot Message-ID: <20251029-nova-as-v3-1-6a30c7333ad9@nvidia.com>

gpu: nova-core: replace wait_on with kernel equivalents

2025-10-25T04:14:21Z

wait_on was a temporary helper function waiting for a kernel crate equivalent. Now that read_poll_timeout and fsleep are available, use them and remove wait_on. Acked-by: Danilo Krummrich Signed-off-by: Alexandre Courbot Message-ID: <20251020-nova_wait_on-v1-1-2eb87fb38d14@nvidia.com>

gpu: nova-core: register: add support for relative array registers

2025-08-15T03:02:56Z

Add support for declaring arrays of registers available from a variable base. This is effectively a combination of the relative and array registers features. nova-core does not make much use of this yet, but it will become helpful to have for GSP boot. Reviewed-by: Lyude Paul Link: https://lore.kernel.org/r/20250718-nova-regs-v2-19-7b6a762aa1cd@nvidia.com Signed-off-by: Alexandre Courbot

gpu: nova-core: falcon: use register arrays for FUSE registers

2025-08-15T03:02:56Z

FUSE registers are an array of 16 consecutive registers. Use the newly available register array feature to define them properly and improve the code using them. Reviewed-by: Lyude Paul Link: https://lore.kernel.org/r/20250718-nova-regs-v2-18-7b6a762aa1cd@nvidia.com Signed-off-by: Alexandre Courbot