poplar::ddk::dma

Struct DmaToken

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pub struct DmaToken {
    pub ptr: NonNull<u8>,
    pub length: usize,
    pub phys: usize,
    /* private fields */
}
Expand description

A DmaToken refers to an underlying DmaObject, DmaArray, or DmaBuffer while waiting for a DMA transaction to complete. It allows a DMA type to be ‘locked’ while hardware is accessing it (preventing accesses through the DMA type and erroring if it is dropped while the token is held), and so helps to enforce correct use of DMA memory.

It also erases the overlying DMA type, and so allows users to operate on any form of DMAable memory.

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§ptr: NonNull<u8>§length: usize§phys: usize

Trait Implementations§

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impl Drop for DmaToken

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl Send for DmaToken

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impl Sync for DmaToken

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