Struct DmaBuffer 

pub struct DmaBuffer { /* private fields */ }

DMA Buffer

Implementations

impl DmaBuffer

pub fn from_frame(frame: FrameNumber, index: u16) -> Self

Create a DMA buffer from an allocated physical frame.

Converts the frame number to physical and virtual addresses using the kernel’s direct physical memory mapping.

pub fn virt_addr(&self) -> usize

Get virtual address

pub fn phys_addr(&self) -> PhysicalAddress

Get physical address for DMA

pub fn size(&self) -> usize

Get buffer size

pub fn index(&self) -> u16

Get buffer index in pool

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

Get buffer as slice

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

Get buffer as mutable slice

pub fn acquire(&self) -> u64

Increment reference count

pub fn release(&self) -> u64

Decrement reference count

pub fn is_free(&self) -> bool

Check if buffer is free (refcount == 0)