f86be46c98
Now we don't send raw numbers, but we let the IRQController object to figure out the correct IRQ number. This helps in a situation when we have 2 or more IOAPICs, so if IOAPIC 1 is assigned for IRQs 0-23 and IOAPIC 2 is assigned for IRQs 24-47, if an IRQHandler of IRQ 25 invokes disable() for example, it will call his responsible IRQController (IOAPIC 2), and the IRQController will subtract the IRQ number with his assigned offset, and the result is that the second redirection entry in IOAPIC 2 will be masked.
89 lines
3 KiB
C++
89 lines
3 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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#include <Kernel/Interrupts/InterruptManagement.h>
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#include <Kernel/Interrupts/SpuriousInterruptHandler.h>
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namespace Kernel {
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void SpuriousInterruptHandler::initialize(u8 interrupt_number)
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{
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new SpuriousInterruptHandler(interrupt_number);
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}
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void SpuriousInterruptHandler::register_handler(GenericInterruptHandler&)
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{
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}
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void SpuriousInterruptHandler::unregister_handler(GenericInterruptHandler&)
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{
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}
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bool SpuriousInterruptHandler::eoi()
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{
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// FIXME: Actually check if IRQ7 or IRQ15 are spurious, and if not, call EOI with the correct interrupt number.
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m_responsible_irq_controller->spurious_eoi(*this);
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return false;
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}
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SpuriousInterruptHandler::SpuriousInterruptHandler(u8 irq)
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: GenericInterruptHandler(irq)
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, m_responsible_irq_controller(InterruptManagement::the().get_responsible_irq_controller(irq))
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{
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}
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SpuriousInterruptHandler::~SpuriousInterruptHandler()
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{
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}
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void SpuriousInterruptHandler::handle_interrupt(const RegisterState&)
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{
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// FIXME: Actually check if IRQ7 or IRQ15 are spurious, and if not, call the real handler to handle the IRQ.
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klog() << "Spurious Interrupt, vector " << interrupt_number();
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}
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void SpuriousInterruptHandler::enable_interrupt_vector()
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{
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if (m_enabled)
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return;
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m_enabled = true;
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m_responsible_irq_controller->enable(*this);
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}
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void SpuriousInterruptHandler::disable_interrupt_vector()
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{
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if (!m_enabled)
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return;
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m_enabled = false;
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m_responsible_irq_controller->disable(*this);
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}
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const char* SpuriousInterruptHandler::controller() const
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{
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if (m_responsible_irq_controller->type() == IRQControllerType::i82093AA)
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return "";
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return m_responsible_irq_controller->model();
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}
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}
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