Struct devices::virtio::memory_mapper::BasicMemoryMapper

pub struct BasicMemoryMapper {
    maps: BTreeMap<u64, MappingInfo>,
    mask: u64,
    id: u32,
    export_state: Option<ExportState>,
}

Fields

maps: BTreeMap<u64, MappingInfo>

mask: u64

id: u32

export_state: Option<ExportState>

Implementations

impl BasicMemoryMapper

pub fn new(mask: u64) -> BasicMemoryMapper

Trait Implementations

impl AsRawDescriptors for BasicMemoryMapper

fn as_raw_descriptors(&self) -> Vec<RawDescriptor>

Returns the underlying raw descriptors.

impl MemoryMapper for BasicMemoryMapper

fn add_map(&mut self, new_map: MappingInfo) -> Result<AddMapResult>

Creates a new mapping. If the mapping overlaps with an existing mapping, return Ok(false).

fn remove_map(&mut self, iova_start: u64, size: u64) -> Result<RemoveMapResult>

Removes all mappings within the specified range.

fn get_mask(&self) -> Result<u64>

fn supports_detach(&self) -> bool

Whether or not endpoints can be safely detached from this mapper.

fn reset_domain(&mut self) -> Option<EventAsync>

Resets the mapper’s domain back into its initial state. Only necessary if |supports_detach| returns true.

fn id(&self) -> u32

Gets an identifier for the MemoryMapper instance. Must be unique among instances of the same trait implementation.

fn start_export_session(&mut self, ex: &Executor) -> Result<Event>

Starts an export session with the mapper.

fn export(&mut self, iova: u64, size: u64) -> Result<Vec<MemRegion>>

Multiple MemRegions should be returned when the gpa is discontiguous or perms are different.

fn release(&mut self, iova: u64, size: u64) -> Result<()>

Releases a previously exported region.

unsafe fn vfio_dma_map( &mut self, _iova: u64, _hva: u64, _size: u64, _prot: Protection, ) -> Result<AddMapResult>

Exports the specified IO region.