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