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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/HashTable.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/Arch/x86/CPU.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
namespace Kernel {
class IRQHandler;
class SharedIRQHandler final : public GenericInterruptHandler {
public:
static void initialize(u8 interrupt_number);
virtual ~SharedIRQHandler();
virtual void handle_interrupt(const RegisterState& regs) override;
void register_handler(GenericInterruptHandler&);
void unregister_handler(GenericInterruptHandler&);
virtual bool eoi() override;
virtual size_t sharing_devices_count() const override { return m_handlers.size(); }
virtual bool is_shared_handler() const override { return true; }
virtual bool is_sharing_with_others() const override { return false; }
virtual HandlerType type() const override { return HandlerType::SharedIRQHandler; }
virtual const char* purpose() const override { return "Shared IRQ Handler"; }
virtual const char* 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 };
HashTable<GenericInterruptHandler*> m_handlers;
RefPtr<IRQController> m_responsible_irq_controller;
};
}
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