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Device

Struct Device

pub struct Device<T: Operations> { /* private fields */ }

Expand description

A fwctl device.

#[repr(C)] with the fwctl_device at offset 0, matching the C fwctl_alloc_device() layout convention. Contains a pointer to the Registration’s data, set at registration time and cleared on unregistration.

§Invariants

dev is embedded at offset 0 and is initialised by fwctl.
The fwctl refcount owns the allocation lifetime.
registration_data is either NonNull::dangling() (before registration / after unregistration) or points to valid data owned by the Registration.

Implementations§

impl<T: Operations> Device<T>

pub fn new(parent: &Device<Bound>) -> Result<ARef<Self>>

Allocate a new fwctl device.

Returns an ARef that can be passed to Registration::new() to make the device visible to userspace.

Trait Implementations§

impl<T: Operations> AlwaysRefCounted for Device<T>

fn inc_ref(&self)

Increments the reference count on the object.

unsafe fn dec_ref(obj: NonNull<Self>)

Decrements the reference count on the object. Read more

impl<T: Operations> AsRef<Device> for Device<T>

fn as_ref(&self) -> &Device

Converts this type into a shared reference of the (usually inferred) input type.

impl<T: Operations> Send for Device<T>

impl<T: Operations> Sync for Device<T>

Auto Trait Implementations§

impl<T> !Freeze for Device<T>

impl<T> !RefUnwindSafe for Device<T>

impl<T> !Unpin for Device<T>

impl<T> !UnsafeUnpin for Device<T>

impl<T> UnwindSafe for Device<T>
where <T as Operations>::RegistrationData<'static>: RefUnwindSafe,

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Init<T> for T

fn chain<F>(self, f: F) -> ChainInit<Self, F, T, E>
where F: FnOnce(&mut T) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<S, T> IntoSafeCast<T> for S
where T: FromSafeCast<S>,

fn into_safe_cast(self) -> T

Convert self into a T. This operation is guaranteed to be lossless.

impl<S, T> IntoSafeCastArch<T> for S
where T: FromSafeCastArch<S>,

fn into_safe_cast_arch(self) -> T

Convert self into a T. This operation is guaranteed to be lossless.

impl<T> KnownSize for T

const MIN_SIZE: usize = const MIN_SIZE: usize = size_of::<T>();

Minimum size of this type known at compile-time.

const MIN_ALIGN: Alignment = const MIN_ALIGN: Alignment = Alignment::of::<T>();

Minimum alignment of this type known at compile-time.

fn size(_: *const T) -> usize

Get the size of an object of this type in bytes, with the metadata of the given pointer.

impl<T> PinInit<T> for T

unsafe fn __init(self, slot: *mut T) -> Result<(), Infallible>

Initializes slot. Read more

fn pin_chain<F>(self, f: F) -> ChainPinInit<Self, F, T, E>
where F: FnOnce(Pin<&mut T>) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T, U, const N: u32> TryIntoBounded<T, N> for U
where T: Integer, U: TryInto<T>,

fn try_into_bounded(self) -> Option<Bounded<T, N>>

Attempts to convert self into a Bounded using N bits. Read more