irq.h

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#pragma once
 
#include "iris/core/task.h"
#include "iris/hw/irq_controller.h"
 
namespace iris {
struct IrqContext {
    arch::TaskState& task_state;
    int error_code {};
    di::Optional<di::Synchronized<IrqController>&> controller;
};
 
enum class IrqStatus {
    Handled,
    Unknown,
};
 
using IrqHandler = di::Function<IrqStatus(IrqContext&)>;

extern "C" void generic_irq_handler(GlobalIrqNumber irq, iris::arch::TaskState& task_state, int error_code);
 
auto irq_number_for_legacy_isa_interrupt_number(IrqLine irq_line) -> Expected<GlobalIrqNumber>;
auto register_external_irq_handler(IrqLine line, IrqHandler handler) -> Expected<usize>;
auto register_exception_handler(GlobalIrqNumber irq, IrqHandler handler) -> Expected<void>;
void unregister_external_irq_handler(IrqLine line, usize handler_id);
}