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Kernel: Add MSIHandler class
This is a stub for now, since we don't support Message Signaled Interrupts yet.
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12dbb7ca49
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sideshowbarker
2024-07-19 09:06:36 +09:00
Author: https://github.com/supercomputer7 Commit: https://github.com/SerenityOS/serenity/commit/12dbb7ca49b Pull-request: https://github.com/SerenityOS/serenity/pull/1274 Reviewed-by: https://github.com/awesomekling Reviewed-by: https://github.com/shannonbooth
1 changed files with 59 additions and 0 deletions
59
Kernel/Interrupts/MSIHandler.h
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59
Kernel/Interrupts/MSIHandler.h
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/*
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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/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/PCI/Definitions.h>
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namespace Kernel {
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class MSIHandler : public GenericInterruptHandler {
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public:
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virtual ~MSIHandler();
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virtual void handle_interrupt(RegisterState&) override {}
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void enable_irq();
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void disable_irq();
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virtual bool eoi() override;
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virtual size_t get_sharing_devices_count() const override { return 0; }
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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 m_shared_with_others; }
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protected:
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void change_irq_number(u8 irq);
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explicit MSIHandler(PCI::Address);
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private:
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bool m_shared_with_others;
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bool m_enabled;
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};
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}
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