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54e6baf123
Add the initial nova-core driver stub. nova-core is intended to serve as a common base for nova-drm (the corresponding DRM driver) and the vGPU manager VFIO driver, serving as a hard- and firmware abstraction layer for GSP-based NVIDIA GPUs. The Nova project, including nova-core and nova-drm, in the long term, is intended to serve as the successor of Nouveau for all GSP-based GPUs. The motivation for both, starting a successor project for Nouveau and doing so using the Rust programming language, is documented in detail through a previous post on the mailing list [1], an LWN article [2] and a talk from LPC '24. In order to avoid the chicken and egg problem to require a user to upstream Rust abstractions, but at the same time require the Rust abstractions to implement the driver, nova-core kicks off as a driver stub and is subsequently developed upstream. Link: https://lore.kernel.org/dri-devel/Zfsj0_tb-0-tNrJy@cassiopeiae/T/#u [1] Link: https://lwn.net/Articles/990736/ [2] Link: https://youtu.be/3Igmx28B3BQ?si=sBdSEer4tAPKGpOs [3] Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Link: https://lore.kernel.org/r/20250306222336.23482-5-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
22 lines
530 B
Rust
22 lines
530 B
Rust
// SPDX-License-Identifier: GPL-2.0
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pub(crate) const fn to_lowercase_bytes<const N: usize>(s: &str) -> [u8; N] {
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let src = s.as_bytes();
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let mut dst = [0; N];
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let mut i = 0;
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while i < src.len() && i < N {
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dst[i] = (src[i] as char).to_ascii_lowercase() as u8;
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i += 1;
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}
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dst
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}
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pub(crate) const fn const_bytes_to_str(bytes: &[u8]) -> &str {
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match core::str::from_utf8(bytes) {
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Ok(string) => string,
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Err(_) => kernel::build_error!("Bytes are not valid UTF-8."),
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}
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}
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