Enum BufferOwnership

pub enum BufferOwnership {
    Free,
    DriverOwned,
    DeviceOwned,
}

Ownership state of a DMA buffer.

Tracks who owns each buffer to prevent use-after-submit bugs.

Variants

Free

Buffer is not allocated, available for use.

DriverOwned

Buffer is owned by the driver (CPU may access).

DeviceOwned

Buffer is owned by the device (NO ACCESS ALLOWED).

Implementations

impl BufferOwnership

pub fn can_access(&self) -> bool

Check if buffer can be accessed by CPU.

pub fn is_free(&self) -> bool

Check if buffer is free.

pub fn is_device_owned(&self) -> bool

Check if buffer is device-owned.

Trait Implementations

impl Clone for BufferOwnership

fn clone(&self) -> BufferOwnership

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BufferOwnership

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BufferOwnership

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for BufferOwnership

fn eq(&self, other: &BufferOwnership) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for BufferOwnership

impl Eq for BufferOwnership

impl StructuralPartialEq for BufferOwnership