Struct VexRiscvInterruptController

pub struct VexRiscvInterruptController { /* private fields */ }

Rust wrapper around the raw CSR-based VexRiscv interrupt controller

The wrapper supports saving all currently pending interrupts to an internal state, which can then be used for interrupt processing.

Implementations

impl VexRiscvInterruptController

pub const fn new() -> Self

Construct a new VexRiscvInterruptController instance

pub unsafe fn save_pending(&self) -> bool

Save the currently pending interrupts in hardware to the internal state

This should be accessed in an atomic context to ensure a consistent view on the pending interrupts is saved.

pub fn next_saved(&self) -> Option<usize>

Return the next pending interrupts in the saved state

If no interrupt is pending in the saved state, this function returns None.

The ordering is determined by the interrupt number, lower having a higher priority.

pub fn complete_saved(&self, idx: usize)

Mark a saved interrupt as complete, removing it from the next_saved queue

If all interrupts are marked as complete, next_saved will return None.

pub unsafe fn mask_interrupt(idx: usize)

Suppress (mask) a specific interrupt source in the interrupt controller

pub unsafe fn unmask_interrupt(idx: usize)

Unsuppress (unmask) a specific interrupt source in the interrupt controller

pub unsafe fn mask_all_interrupts()

Suppress (mask) all interrupts in the interrupt controller

pub unsafe fn unmask_all_interrupts()

Unsuppress (unmask) all interrupts in the interrupt controller