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5d180d1f99
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED) Since all of these checks are done in release builds as well, let's rename them to VERIFY to prevent confusion, as everyone is used to assertions being compiled out in release. We can introduce a new ASSERT macro that is specifically for debug checks, but I'm doing this wholesale conversion first since we've accumulated thousands of these already, and it's not immediately obvious which ones are suitable for ASSERT.
105 lines
3.6 KiB
C++
105 lines
3.6 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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UNMAP_AFTER_INIT 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& handler)
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{
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VERIFY(!m_real_handler);
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m_real_handler = &handler;
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}
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void SpuriousInterruptHandler::unregister_handler(GenericInterruptHandler&)
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{
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TODO();
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}
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bool SpuriousInterruptHandler::eoi()
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{
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// Actually check if IRQ7 or IRQ15 are spurious, and if not, call EOI with the correct interrupt number.
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if (m_real_irq) {
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m_responsible_irq_controller->eoi(*this);
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m_real_irq = false; // return to default state!
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return true;
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}
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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& state)
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{
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// Actually check if IRQ7 or IRQ15 are spurious, and if not, call the real handler to handle the IRQ.
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if (m_responsible_irq_controller->get_isr() & (1 << 15)) {
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m_real_irq = true; // remember that we had a real IRQ, when EOI later!
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m_real_handler->increment_invoking_counter();
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m_real_handler->handle_interrupt(state);
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return;
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}
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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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VERIFY(!m_real_irq); // this flag should not be set when we call this method
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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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