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[sq] add missing documentation

This commit is contained in:
Berkus Decker 2021-02-28 00:43:33 +02:00
parent 389a6971b7
commit cc163e6d61
3 changed files with 8 additions and 1 deletions
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2
nucleus/src/arch/aarch64/memory/features.rs
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@ -1,3 +1,5 @@
//! Print MMU suported features for debugging.
use { use {
crate::println, crate::println,
cortex_a::regs::{RegisterReadOnly, RegisterReadWrite, ID_AA64MMFR0_EL1, SCTLR_EL1, TCR_EL1}, cortex_a::regs::{RegisterReadOnly, RegisterReadWrite, ID_AA64MMFR0_EL1, SCTLR_EL1, TCR_EL1},

3
nucleus/src/arch/aarch64/memory/mmu.rs
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@ -282,6 +282,7 @@ pub trait HierarchicalLevel: TableLevel {
// fn translate() -> Directory<NextLevel>; // fn translate() -> Directory<NextLevel>;
} }
/// Specify allowed page size for each level.
pub trait HierarchicalPageLevel: TableLevel { pub trait HierarchicalPageLevel: TableLevel {
/// Size of the page that can be contained in this table level. /// Size of the page that can be contained in this table level.
type PageLevel: PageSize; type PageLevel: PageSize;
@ -479,9 +480,11 @@ where
/// Errors from mapping layer /// Errors from mapping layer
#[derive(Debug, Snafu)] #[derive(Debug, Snafu)]
pub enum TranslationError { pub enum TranslationError {
/// No page found. @todo
NoPage, NoPage,
} }
/// Virtual address space. @todo
pub struct VirtSpace { pub struct VirtSpace {
l0: Unique<Directory<L0PageGlobalDirectory>>, l0: Unique<Directory<L0PageGlobalDirectory>>,
} }

4
nucleus/src/arch/aarch64/memory/mod.rs
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@ -29,9 +29,11 @@ pub use addr::VirtAddr;
pub use page_size::PageSize; pub use page_size::PageSize;
pub use phys_frame::PhysFrame; pub use phys_frame::PhysFrame;
// @todo ?? /// @todo ??
pub trait FrameAllocator { pub trait FrameAllocator {
/// Allocate a physical memory frame.
fn allocate_frame(&mut self) -> Option<PhysFrame>; // @todo Result<> fn allocate_frame(&mut self) -> Option<PhysFrame>; // @todo Result<>
/// Deallocate a physical frame.
fn deallocate_frame(&mut self, frame: PhysFrame); fn deallocate_frame(&mut self, frame: PhysFrame);
} }