From b56afbea17327140a98a6d9eb4eb8dc5f93df7d1 Mon Sep 17 00:00:00 2001 From: Liav A Date: Sat, 22 Feb 2020 19:23:03 +0200 Subject: [PATCH] Kernel: Add IRQController class This class is an abstraction layer for different IRQ controllers that are present in a typical system. --- Kernel/Interrupts/IRQController.h | 62 +++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Kernel/Interrupts/IRQController.h diff --git a/Kernel/Interrupts/IRQController.h b/Kernel/Interrupts/IRQController.h new file mode 100644 index 00000000000..fe32376fbfe --- /dev/null +++ b/Kernel/Interrupts/IRQController.h @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2020, Liav A. + * 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 + +namespace Kernel { + +enum class IRQControllerType { + i8259 = 1, /* Intel 8259 Dual PIC */ + i82093AA = 2 /* Intel 82093AA I/O ADVANCED PROGRAMMABLE INTERRUPT CONTROLLER (IOAPIC) */ +}; + +class IRQController { +public: + virtual ~IRQController() {} + + virtual void enable(u8 number) = 0; + virtual void disable(u8 number) = 0; + virtual void hard_disable() { m_hard_disabled = true; } + virtual bool is_vector_enabled(u8 number) const = 0; + bool is_enabled() const { return m_enabled && !m_hard_disabled; } + bool is_hard_disabled() const { return m_hard_disabled; } + virtual void eoi(u8 number) const = 0; + virtual u32 get_gsi_base() const = 0; + virtual u16 get_isr() const = 0; + virtual u16 get_irr() const = 0; + virtual const char* model() const = 0; + virtual IRQControllerType type() const = 0; + +protected: + IRQController() {} + virtual void initialize() = 0; + bool m_enabled { false }; + bool m_hard_disabled { false }; +}; +}