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36 lines
761 B
Rust
36 lines
761 B
Rust
// SPDX-License-Identifier: MIT OR Apache-2.0
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//
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// Copyright (c) 2020 Andre Richter <andre.o.richter@gmail.com>
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//! Common device driver code.
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use core::{marker::PhantomData, ops};
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pub struct MMIODerefWrapper<T> {
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base_addr: usize,
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phantom: PhantomData<T>,
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}
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impl<T> MMIODerefWrapper<T> {
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/// Create an instance.
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pub const unsafe fn new(base_addr: usize) -> Self {
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Self {
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base_addr,
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phantom: PhantomData,
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}
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}
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/// Return a pointer to the associated MMIO register block.
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fn ptr(&self) -> *const T {
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self.base_addr as *const _
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}
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}
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impl<T> ops::Deref for MMIODerefWrapper<T> {
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type Target = T;
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fn deref(&self) -> &Self::Target {
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unsafe { &*self.ptr() }
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}
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}
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