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666990fbcb
We don't return blindly the IRQ controller's model(), if the Spurious IRQ handler is installed in IOAPIC environment, it's misleading to return "IOAPIC" string since IOAPIC doesn't really handle Spurious IRQs, therefore we return a "" string.
66 lines
2.7 KiB
C++
66 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/OwnPtr.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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#include <Kernel/Interrupts/IRQController.h>
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namespace Kernel {
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class SpuriousInterruptHandler final : public GenericInterruptHandler {
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public:
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static void initialize(u8 interrupt_number);
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virtual ~SpuriousInterruptHandler();
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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 1; }
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virtual bool is_shared_handler() const override { return false; }
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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::SpuriousInterruptHandler; }
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virtual const char* purpose() const override { return "Spurious Interrupt Handler"; }
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virtual const char* controller() const override;
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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 SpuriousInterruptHandler(u8 interrupt_number);
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bool m_enabled;
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RefPtr<IRQController> m_responsible_irq_controller;
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OwnPtr<GenericInterruptHandler> m_real_handler;
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};
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}
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