Enum DmaError 

pub enum DmaError {
    NoMemory,
    LayoutError(LayoutError),
    DmaMaskNotMatch {
        addr: DmaAddr,
        mask: u64,
    },
    AlignMismatch {
        required: usize,
        address: DmaAddr,
    },
    NullPointer,
    ZeroSizedBuffer,
}

DMA 错误类型

Variants

NoMemory

LayoutError(LayoutError)

DmaMaskNotMatch

Fields

addr: DmaAddr

mask: u64

AlignMismatch

Fields

required: usize

address: DmaAddr

NullPointer

ZeroSizedBuffer

Trait Implementations

impl Clone for DmaError

fn clone(&self) -> DmaError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DmaError

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

Formats the value using the given formatter.

impl Display for DmaError

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

Formats the value using the given formatter.

impl Error for DmaError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<LayoutError> for DmaError

fn from(source: LayoutError) -> Self

Converts to this type from the input type.

impl PartialEq for DmaError

fn eq(&self, other: &DmaError) -> 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 Eq for DmaError

impl StructuralPartialEq for DmaError