Trait riscv::paging::Mapper

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pub trait Mapper {
    type P: PhysicalAddress;
    type V: VirtualAddress;
    type MapperFlush: MapperFlushable;
    type Entry: PTE;
    fn map_to(
        &mut self, 
        page: PageWith<Self::V>, 
        frame: FrameWith<Self::P>, 
        flags: PageTableFlags, 
        allocator: &mut impl FrameAllocatorFor<<Self as Mapper>::P>
    ) -> Result<Self::MapperFlush, MapToError>;
    fn unmap(
        &mut self, 
        page: PageWith<Self::V>
    ) -> Result<(FrameWith<Self::P>, Self::MapperFlush), UnmapError<<Self as Mapper>::P>>;
    fn ref_entry(
        &mut self, 
        page: PageWith<Self::V>
    ) -> Result<&mut Self::Entry, FlagUpdateError>;

    fn update_flags(
        &mut self, 
        page: PageWith<Self::V>, 
        flags: PageTableFlags
    ) -> Result<Self::MapperFlush, FlagUpdateError> { ... }
    fn translate_page(
        &mut self, 
        page: PageWith<Self::V>
    ) -> Option<FrameWith<Self::P>> { ... }
    fn identity_map(
        &mut self, 
        frame: FrameWith<Self::P>, 
        flags: PageTableFlags, 
        allocator: &mut impl FrameAllocatorFor<<Self as Mapper>::P>
    ) -> Result<Self::MapperFlush, MapToError> { ... }
}

Associated Types

Required methods

Creates a new mapping in the page table.

This function might need additional physical frames to create new page tables. These frames are allocated from the allocator argument. At most three frames are required.

Removes a mapping from the page table and returns the frame that used to be mapped.

Note that no page tables or pages are deallocated.

source

fn ref_entry(
    &mut self,
    page: PageWith<Self::V>
) -> Result<&mut Self::Entry, FlagUpdateError>

Get the reference of the specified page entry

Provided methods

Updates the flags of an existing mapping.

source

fn translate_page(
    &mut self,
    page: PageWith<Self::V>
) -> Option<FrameWith<Self::P>>

Return the frame that the specified page is mapped to.

Maps the given frame to the virtual page with the same address.

Implementors