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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/NonnullOwnPtr.h>
#include <AK/Types.h>
#include <Kernel/Arch/IRQController.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
#include <Kernel/Library/LockRefPtr.h>
#include <Kernel/Locking/SpinlockProtected.h>
namespace Kernel {
class IRQHandler;
class SharedIRQHandler final : public GenericInterruptHandler {
public:
static void initialize(u8 interrupt_number);
virtual ~SharedIRQHandler();
virtual bool handle_interrupt(RegisterState const& regs) override;
void register_handler(GenericInterruptHandler&);
void unregister_handler(GenericInterruptHandler&);
virtual bool eoi() override;
void enumerate_handlers(Function<void(GenericInterruptHandler&)>&);
virtual size_t sharing_devices_count() const override
{
return m_handlers.with([](auto& list) { return list.size_slow(); });
}
virtual bool is_shared_handler() const override { return true; }
virtual HandlerType type() const override { return HandlerType::SharedIRQHandler; }
virtual StringView purpose() const override { return "Shared IRQ Handler"sv; }
virtual StringView controller() const override { return m_responsible_irq_controller->model(); }
private:
void enable_interrupt_vector();
void disable_interrupt_vector();
explicit SharedIRQHandler(u8 interrupt_number);
bool m_enabled { true };
SpinlockProtected<GenericInterruptHandler::List, LockRank::None> m_handlers;
NonnullLockRefPtr<IRQController> m_responsible_irq_controller;
};
}
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