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The core library's `From` implementations do not cover conversions that are not portable or future-proof. For instance, even though it is safe today, `From<usize>` is not implemented for `u64` because of the possibility to support larger-than-64bit architectures in the future. However, the kernel supports a narrower set of architectures, and in the case of Nova we only support 64-bit. This makes it helpful and desirable to provide more infallible conversions, lest we need to rely on the `as` keyword and carry the risk of silently losing data. Thus, introduce a new module `num` that provides safe const functions performing more conversions allowed by the build target, as well as `FromSafeCast` and `IntoSafeCast` traits that are just extensions of `From` and `Into` to conversions that are known to be lossless. Suggested-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/rust-for-linux/DDK4KADWJHMG.1FUPL3SDR26XF@kernel.org/ Acked-by: Danilo Krummrich <dakr@kernel.org> [acourbot@nvidia.com: fix merge conflicts after rebase.] Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Message-ID: <20251029-nova-as-v3-4-6a30c7333ad9@nvidia.com>
32 lines
554 B
Rust
32 lines
554 B
Rust
// SPDX-License-Identifier: GPL-2.0
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//! Nova Core GPU Driver
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#[macro_use]
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mod bitfield;
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mod dma;
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mod driver;
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mod falcon;
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mod fb;
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mod firmware;
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mod gfw;
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mod gpu;
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mod gsp;
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mod num;
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mod regs;
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mod vbios;
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pub(crate) const MODULE_NAME: &kernel::str::CStr = <LocalModule as kernel::ModuleMetadata>::NAME;
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kernel::module_pci_driver! {
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type: driver::NovaCore,
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name: "NovaCore",
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authors: ["Danilo Krummrich"],
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description: "Nova Core GPU driver",
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license: "GPL v2",
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firmware: [],
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}
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kernel::module_firmware!(firmware::ModInfoBuilder);
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