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rust: kernel: add a function that that returns a reference to the IoPort Resource #1199

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rust: kernel: add a function that that returns a reference to the IoPort Resource #1199

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7 changes: 7 additions & 0 deletions rust/kernel/io/resource.rs
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Expand Up @@ -18,6 +18,13 @@ use crate::types::Opaque;
/// `CONFIG_PHYS_ADDR_T_64BIT`, and it can be a u64 even on 32-bit architectures.
pub type ResourceSize = bindings::phys_addr_t;

#[cfg(CONFIG_HAS_IOPORT)]
/// Returns a reference to the global `ioport_resource` variable.
pub fn ioport_resource() -> &'static Resource {
// SAFETY: `bindings::ioport_resoure` has global lifetime and is of type Resource.
unsafe { Resource::from_raw(&raw mut bindings::ioport_resource) }
}

/// A region allocated from a parent [`Resource`].
///
/// # Invariants
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