rust: io: add projection macro and methods

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Add an `io_project!()` macro to allow projection from `Io` to a subview of
it, using the pointer projection mechanism to perform compile-time checks.

For cases where type-casting is required, the `try_cast()` function may be
used where the size and alignment checks are performed at runtime.

Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Link: https://patch.msgid.link/20260706-io_projection-v6-13-72cd5d055d54@garyguo.net
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

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Gary Guo 2026-07-06 13:44:26 +01:00 • committed by Danilo Krummrich

parent 9b36c13cbd

commit 1f989555fe

1 changed files with 128 additions and 0 deletions

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rust/kernel/io.rs

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