Struct Plic

#[repr(C)]
pub struct Plic { /* private fields */ }

The Platform-Level Interrupt Controller (PLIC) distributes received interrupts to targets, generally HART contexts. Its interface is described here.

Implementations

impl Plic

pub fn init(&self, num_interrupts: usize)

pub fn set_source_priority(&self, source: usize, priority: usize)

pub fn enable_interrupt(&self, context: usize, source: usize)

pub fn set_context_threshold(&self, context: usize, threshold: u32)

pub fn claim_interrupt(&self, context: usize) -> u32

Claim an interrupt on the given interrupt context. Returns the ID of the highest priority pending interrupt, or zero if there is no pending interrupt. Automatically clears the corresponding interrupt pending bit.

pub fn complete_interrupt(&self, context: usize, interrupt: u32)

Signal to the PLIC that the given interrupt has been handled. This is required to receive another interrupt of the same type.