diff --git a/Kernel/Interrupts/IRQHandler.cpp b/Kernel/Interrupts/IRQHandler.cpp new file mode 100644 index 0000000000..72d06a3161 --- /dev/null +++ b/Kernel/Interrupts/IRQHandler.cpp @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2018-2020, Andreas Kling + * 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. + */ + +#include +#include +#include + +//#define IRQ_DEBUG + +namespace Kernel { + +IRQHandler::IRQHandler(u8 irq) + : GenericInterruptHandler(irq) +{ +} + +IRQHandler::~IRQHandler() +{ +} + +bool IRQHandler::eoi() +{ +#ifdef IRQ_DEBUG + dbg() << "EOI IRQ " << interrupt_number(); +#endif + if (!m_shared_with_others) { + InterruptManagement::the().eoi(interrupt_number()); + return true; + } + return false; +} + +void IRQHandler::enable_irq() +{ +#ifdef IRQ_DEBUG + dbg() << "Enable IRQ " << interrupt_number(); +#endif + if (!m_shared_with_others) + InterruptManagement::the().enable(interrupt_number()); + else + m_enabled = true; +} + +void IRQHandler::disable_irq() +{ +#ifdef IRQ_DEBUG + dbg() << "Disable IRQ " << interrupt_number(); +#endif + if (!m_shared_with_others) + InterruptManagement::the().disable(interrupt_number()); + else + m_enabled = false; +} + +void IRQHandler::change_irq_number(u8 irq) +{ + InterruptDisabler disabler; + change_interrupt_number(irq); +} + +} diff --git a/Kernel/Interrupts/IRQHandler.h b/Kernel/Interrupts/IRQHandler.h new file mode 100644 index 0000000000..3584d65170 --- /dev/null +++ b/Kernel/Interrupts/IRQHandler.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2018-2020, Andreas Kling + * 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 +#include +#include +#include + +namespace Kernel { + +class IRQHandler : public GenericInterruptHandler { +public: + virtual ~IRQHandler(); + + virtual void handle_interrupt(RegisterState& regs) { handle_irq(regs); } + virtual void handle_irq(RegisterState&) = 0; + + void enable_irq(); + void disable_irq(); + + virtual bool eoi() override; + + virtual HandlerPurpose purpose() const override { return HandlerPurpose::IRQHandler; } + + virtual size_t get_sharing_devices_count() const override { return 0; } + virtual bool is_shared_handler() const override { return false; } + virtual bool is_sharing_with_others() const override { return m_shared_with_others; } + +protected: + void change_irq_number(u8 irq); + explicit IRQHandler(u8 irq); + +private: + bool m_shared_with_others { false }; + bool m_enabled { false }; +}; + +}