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MmioBackend

kernel::io

Struct MmioBackend 

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pub struct MmioBackend;
Expand description

I/O Backend for memory-mapped I/O.

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impl IoBackend for MmioBackend

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type View<'a, T: ?Sized + KnownSize> = Mmio<'a, T>

View type for this I/O backend.
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fn as_ptr<'a, T: ?Sized + KnownSize>(view: Self::View<'a, T>) -> *mut T

Convert a view to a raw pointer for projection. Read more
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unsafe fn project_view<'a, T: ?Sized + KnownSize, U: ?Sized + KnownSize>( _view: Self::View<'a, T>, ptr: *mut U, ) -> Self::View<'a, U>

Project view to its subregion indicated by ptr. Read more
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impl IoCapable<u8> for MmioBackend

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fn io_read(view: <MmioBackend as IoBackend>::View<'_, u8>) -> u8

Performs an I/O read of type T at view and returns the result.
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fn io_write(view: <MmioBackend as IoBackend>::View<'_, u8>, value: u8)

Performs an I/O write of value at view.
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impl IoCapable<u16> for MmioBackend

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fn io_read(view: <MmioBackend as IoBackend>::View<'_, u16>) -> u16

Performs an I/O read of type T at view and returns the result.
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fn io_write(view: <MmioBackend as IoBackend>::View<'_, u16>, value: u16)

Performs an I/O write of value at view.
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impl IoCapable<u32> for MmioBackend

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fn io_read(view: <MmioBackend as IoBackend>::View<'_, u32>) -> u32

Performs an I/O read of type T at view and returns the result.
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fn io_write(view: <MmioBackend as IoBackend>::View<'_, u32>, value: u32)

Performs an I/O write of value at view.
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impl IoCapable<u64> for MmioBackend

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fn io_read(view: <MmioBackend as IoBackend>::View<'_, u64>) -> u64

Performs an I/O read of type T at view and returns the result.
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fn io_write(view: <MmioBackend as IoBackend>::View<'_, u64>, value: u64)

Performs an I/O write of value at view.
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impl IoCopyable for MmioBackend

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unsafe fn copy_from_io(view: Self::View<'_, [u8]>, buffer: *mut u8)

Copy contents of view to buffer. Read more
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unsafe fn copy_to_io(view: Self::View<'_, [u8]>, buffer: *const u8)

Copy contents from buffer to view. Read more
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fn copy_read<T: FromBytes>(view: Self::View<'_, T>) -> T

Copy from view and return the value.
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fn copy_write<T: IntoBytes>(view: Self::View<'_, T>, value: T)

Copy value to view. Read more

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Init<T> for T

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

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fn into(self) -> U

Calls U::from(self).

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

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

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fn into_safe_cast(self) -> T

Convert self into a T. This operation is guaranteed to be lossless.
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impl<S, T> IntoSafeCastArch<T> for S
where T: FromSafeCastArch<S>,

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fn into_safe_cast_arch(self) -> T

Convert self into a T. This operation is guaranteed to be lossless.
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impl<T> KnownSize for T

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

Minimum size of this type known at compile-time.
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const MIN_ALIGN: Alignment = const MIN_ALIGN: Alignment = Alignment::of::<T>();

Minimum alignment of this type known at compile-time.
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fn size(_: *const T) -> usize

Get the size of an object of this type in bytes, with the metadata of the given pointer.
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impl<T> PinInit<T> for T

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

Initializes slot. Read more
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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
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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, U, const N: u32> TryIntoBounded<T, N> for U
where T: Integer, U: TryInto<T>,

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

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