Struct Arena 

pub struct Arena { /* private fields */ }

The DMA arena the kernel granted this driver. Not Copy: Arena::layout takes it, so a laid-out arena is reached only through its parts.

Implementations

impl Arena

pub fn len(&self) -> usize

The arena’s size in bytes.

pub fn phys_at(&self, off: usize) -> u64

The physical address of byte off: what the device is given.

pub fn zero(&self)

Zero the whole arena, with aligned volatile stores (never a memset, which may fault on the Device memory a non-coherent port maps it as).

pub fn layout(self) -> Layout

Lay the arena out in named parts, from its start. The arena is taken: from here on it is reached through the parts.

pub fn read8(&self, off: usize) -> u8

Read 8 bits at off.

pub fn read16(&self, off: usize) -> u16

Read 16 bits at off.

pub fn read32(&self, off: usize) -> u32

Read 32 bits at off.

pub fn read64(&self, off: usize) -> u64

Read 64 bits at off.

pub fn write8(&self, off: usize, val: u8)

Write 8 bits at off.

pub fn write16(&self, off: usize, val: u16)

Write 16 bits at off.

pub fn write32(&self, off: usize, val: u32)

Write 32 bits at off.

pub fn write64(&self, off: usize, val: u64)

Write 64 bits at off.