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https://github.com/RGBCube/serenity
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85307dd26e
Now the ACPI & PCI code is more safer, because we don't use raw pointers or references to objects or data that are located in the physical address space, so an accidental dereference cannot happen easily. Instead, we use the PhysicalAddress class to represent those addresses.
96 lines
3.4 KiB
C++
96 lines
3.4 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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#pragma once
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#include <AK/FixedArray.h>
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#include <AK/Function.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/OwnPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <AK/Types.h>
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#include <Kernel/ACPI/Definitions.h>
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#include <Kernel/Interrupts/GenericInterruptHandler.h>
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#include <Kernel/Interrupts/IOAPIC.h>
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#include <Kernel/Interrupts/IRQController.h>
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namespace Kernel {
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class InterruptManagement {
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public:
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static InterruptManagement& the();
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static void initialize();
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static bool initialized();
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virtual void switch_to_pic_mode();
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virtual void switch_to_ioapic_mode();
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void enable(u8 interrupt_vector);
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void disable(u8 interrupt_vector);
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void eoi(u8 interrupt_vector);
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void enumerate_interrupt_handlers(Function<void(GenericInterruptHandler&)>);
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IRQController& get_interrupt_controller(int index);
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protected:
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explicit InterruptManagement(bool create_default_controller);
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FixedArray<OwnPtr<IRQController>> m_interrupt_controllers { 1 };
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};
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class ISAInterruptOverrideMetadata;
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class AdvancedInterruptManagement : public InterruptManagement {
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friend class IOAPIC;
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public:
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static void initialize(PhysicalAddress madt);
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virtual void switch_to_ioapic_mode() override;
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virtual void switch_to_pic_mode() override;
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private:
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explicit AdvancedInterruptManagement(PhysicalAddress madt);
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void locate_ioapics(PhysicalAddress madt);
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void locate_isa_interrupt_overrides(PhysicalAddress madt);
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void locate_pci_interrupt_overrides();
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Vector<RefPtr<ISAInterruptOverrideMetadata>> m_isa_interrupt_overrides;
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Vector<RefPtr<PCIInterruptOverrideMetadata>> m_pci_interrupt_overrides;
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PhysicalAddress m_madt;
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};
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class ISAInterruptOverrideMetadata : public RefCounted<ISAInterruptOverrideMetadata> {
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public:
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ISAInterruptOverrideMetadata(u8 bus, u8 source, u32 global_system_interrupt, u16 flags);
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u8 bus() const;
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u8 source() const;
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u32 gsi() const;
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u16 flags() const;
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private:
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u8 m_bus;
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u8 m_source;
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u32 m_global_system_interrupt;
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u16 m_flags;
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};
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}
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