Struct CpuDmaBuffer 

pub struct CpuDmaBuffer { /* private fields */ }

CPU-owned contiguous DMA buffer that can be prepared for one async request.

Implementations

impl CpuDmaBuffer

pub fn new_zero( device: &DeviceDma, len: NonZeroUsize, align: usize, direction: DmaDirection, ) -> Result<Self, DmaError>

pub fn from_contiguous(backing: ContiguousArray<u8>) -> Self

pub fn len(&self) -> NonZeroUsize

pub fn is_empty(&self) -> bool

pub const fn direction(&self) -> DmaDirection

pub const fn domain_id(&self) -> DmaDomainId

pub fn cpu_ptr(&self) -> NonNull<u8>

pub fn dma_addr(&self) -> DmaAddr

pub fn segment(&self) -> DmaSegment

pub fn as_slice_cpu(&self) -> &[u8]

pub unsafe fn as_mut_slice_cpu(&mut self) -> &mut [u8]

Safety

The caller must ensure no device can access this buffer while the returned mutable CPU slice is used.

pub fn copy_to_device_from_slice(&mut self, src: &[u8])

pub fn copy_from_device_to_slice(&self, dst: &mut [u8])

pub fn prepare_for_device_all(&self)

pub fn complete_for_cpu_all(&self)

pub fn prepare_for_device(self) -> PreparedDma