kernel/linux.git/drivers/gpu/nova-core/firmware, branch v6.19.11

gpu: nova-core: gsp: Boot GSP

2025-11-14T11:25:57+00:00

Boot the GSP to the RISC-V active state. Completing the boot requires running the CPU sequencer which will be added in a future commit. Reviewed-by: Lyude Paul Signed-off-by: Alistair Popple Signed-off-by: Alexandre Courbot Message-ID: <20251110-gsp_boot-v9-15-8ae4058e3c0e@nvidia.com>

gpu: nova-core: gsp: Create wpr metadata

2025-11-14T11:25:56+00:00

The GSP requires some pieces of metadata to boot. These are passed in a struct which the GSP transfers via DMA. Create this struct and get a handle to it for future use when booting the GSP. Signed-off-by: Alistair Popple Co-developed-by: Alexandre Courbot Signed-off-by: Alexandre Courbot Message-ID: <20251110-gsp_boot-v9-5-8ae4058e3c0e@nvidia.com>

gpu: nova-core: compute layout of more framebuffer regions required for GSP

2025-11-14T02:05:58+00:00

Compute more of the required FB layout information to boot the GSP firmware. This information is dependent on the firmware itself, so first we need to import and abstract the required firmware bindings in the `nvfw` module. Then, a new FB HAL method is introduced in `fb::hal` that uses these bindings and hardware information to compute the correct layout information. This information is then used in `fb` and the result made visible in `FbLayout`. These 3 things are grouped into the same patch to avoid lots of unused warnings that would be tedious to work around. As they happen in different files, they should not be too difficult to track separately. Acked-by: Danilo Krummrich Signed-off-by: Alexandre Courbot Message-ID: <20251110-gsp_boot-v9-1-8ae4058e3c0e@nvidia.com>

gpu: nova-core: replace use of `as` with functions from `num`

2025-11-07T23:22:45+00:00

Use the newly-introduced `num` module to replace the use of `as` wherever it is safe to do. This ensures that a given conversion cannot lose data if its source or destination type ever changes. Acked-by: Danilo Krummrich [acourbot@nvidia.com: fix merge conflicts after rebase.] Signed-off-by: Alexandre Courbot Message-ID: <20251029-nova-as-v3-5-6a30c7333ad9@nvidia.com>

gpu: nova-core: Fix capitalization of some comments

2025-11-07T14:10:44+00:00

Some comments that already existed didn't start with a capital letter, this patch fixes that. Signed-off-by: Daniel del Castillo [acourbot@nvidia.com: set prefix to "gpu: nova-core:".] Signed-off-by: Alexandre Courbot Message-ID: <20251104193756.57726-2-delcastillodelarosadaniel@gmail.com>

gpu: nova-core: Simplify `transmute` and `transmute_mut` in fwsec.rs

2025-11-07T14:10:44+00:00

This patch solves one of the existing mentions of COHA, a task in the Nova task list about improving the `CoherentAllocation` API. It uses the new `from_bytes` method from the `FromBytes` trait as well as the `as_slice` and `as_slice_mut` methods from `CoherentAllocation`. Signed-off-by: Daniel del Castillo [acourbot@nvidia.com: set prefix to "gpu: nova-core:".] [acourbot@nvidia.com: fix merge conflict after imports refactor.] Signed-off-by: Alexandre Courbot Message-ID: <20251104193756.57726-1-delcastillodelarosadaniel@gmail.com>

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

2025-11-07T14:10:44+00:00

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: use `try_from` instead of `as` for u32 conversions

2025-11-04T04:26:54+00:00

There are a few situations in the driver where we convert a `usize` into a `u32` using `as`. Even though most of these are obviously correct, use `try_from` and let the compiler optimize wherever it is safe to do so. Acked-by: Danilo Krummrich Signed-off-by: Alexandre Courbot Message-ID: <20251029-nova-as-v3-3-6a30c7333ad9@nvidia.com>

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

2025-10-30T01:35:34+00:00

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: Ada: basic GPU identification

2025-10-25T04:12:05+00:00

...which is sufficient to make Ada GPUs work, because they use the pre-existing Ampere GPU code, unmodified. Tested on AD102 (RTX 6000 Ada). Signed-off-by: John Hubbard Signed-off-by: Alexandre Courbot Message-ID: <20251025012017.573078-1-jhubbard@nvidia.com>