irq.h File Reference

#include "soc.h"
#include "type.h"
#include "riscv.h"
#include "plic/plic.h"

Go to the source code of this file.

Overview

RISC-V Core Interrupt Handling and Vector Table.

Author

Efinix Inc

This file provides APIs to control the CPU's global interrupt state (MIE bit in mstatus) and individual interrupt sources (mie register).

Copyright

2013-2026 Efinix Inc. All rights reserved.
See the full License Information for Efinix and SaxonSoc MIT terms.

Definition in file irq.h.

Typedefs
typedef int(*	irq_handler_t) (void)
	Standard Interrupt Handler Function Pointer.

Enumerations
enum	cpu_irq_t { IRQ_SOFTWARE = MIE_MSIE , IRQ_TIMER = MIE_MTIE , IRQ_EXTERNAL = MIE_MEIE }
	CPU Interrupt Type (Standard RISC-V MIE bits). More...

Functions
void	irq_enable (void)
	Enable Global Interrupts.
void	irq_disable (void)
	Disable Global Interrupts.
void	irq_setType (cpu_irq_t enable)
	Enable specific CPU interrupt sources.
void	irq_clearType (cpu_irq_t disable)
	Disable specific CPU interrupt sources.
void	irq_registerExt (u32 gateway, irq_handler_t handler)
	Register a handler for an External Interrupt (PLIC).
void	irq_setTrapVector (void(*trap_vector)(void))
	Set the Machine Trap Vector (mtvec).

Variables
int(*	interrupt_vector_table [64])(void)
	Global Interrupt Vector Table.