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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/HashTable.h>
#include <AK/OwnPtr.h>
#include <AK/Types.h>
#include <Kernel/Arch/i386/CPU.h>
#include <Kernel/Interrupts/IRQController.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
namespace Kernel {
class SpuriousInterruptHandler final : public GenericInterruptHandler {
public:
static void initialize(u8 interrupt_number);
virtual ~SpuriousInterruptHandler();
virtual void handle_interrupt(RegisterState& regs) override;
void register_handler(GenericInterruptHandler&);
void unregister_handler(GenericInterruptHandler&);
virtual bool eoi() override;
virtual size_t sharing_devices_count() const override { return 1; }
virtual bool is_shared_handler() const override { return false; }
virtual bool is_sharing_with_others() const override { return false; }
virtual HandlerType type() const override { return HandlerType::SpuriousInterruptHandler; }
virtual const char* purpose() const override { return "Spurious Interrupt Handler"; }
virtual const char* controller() const override { return m_responsible_irq_controller->model(); }
private:
void enable_interrupt_vector();
void disable_interrupt_vector();
explicit SpuriousInterruptHandler(u8 interrupt_number);
bool m_enabled;
RefPtr<IRQController> m_responsible_irq_controller;
OwnPtr<GenericInterruptHandler> m_real_handler;
};
}
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