Encapsulates the core physical/DMA address types, so they can be used by Rust abstractions. Signed-off-by: Asahi Lina <lina@xxxxxxxxxxxxx> --- rust/kernel/addr.rs | 15 +++++++++++++++ rust/kernel/lib.rs | 1 + 2 files changed, 16 insertions(+) diff --git a/rust/kernel/addr.rs b/rust/kernel/addr.rs new file mode 100644 index 0000000000000000000000000000000000000000..06aff10a0332355597060c5518d7fd6e114cf630 --- /dev/null +++ b/rust/kernel/addr.rs @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0 + +//! Kernel core address types. + +use bindings; +use core::ffi; + +/// A physical memory address (which may be wider than the CPU pointer size) +pub type PhysicalAddr = bindings::phys_addr_t; +/// A DMA memory address (which may be narrower than `PhysicalAddr` on some systems) +pub type DmaAddr = bindings::dma_addr_t; +/// A physical resource size, typically the same width as `PhysicalAddr` +pub type ResourceSize = bindings::resource_size_t; +/// A raw page frame number, not to be confused with the C `pfn_t` which also encodes flags. +pub type Pfn = ffi::c_ulong; diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs index e1065a7551a39e68d6379031d80d4be336e652a3..eb1a80ba8ff83ab2d1b3b1d11fed4fb704c7a4f5 100644 --- a/rust/kernel/lib.rs +++ b/rust/kernel/lib.rs @@ -29,6 +29,7 @@ pub use ffi; +pub mod addr; pub mod alloc; #[cfg(CONFIG_BLOCK)] pub mod block; -- 2.47.1
