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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/OwnPtr.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/Firmware/ACPI/Definitions.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
#include <Kernel/Interrupts/IOAPIC.h>
#include <Kernel/Interrupts/IRQController.h>
namespace Kernel {
class ISAInterruptOverrideMetadata {
public:
ISAInterruptOverrideMetadata(u8 bus, u8 source, u32 global_system_interrupt, u16 flags)
: m_bus(bus)
, m_source(source)
, m_global_system_interrupt(global_system_interrupt)
, m_flags(flags)
{
}
u8 bus() const { return m_bus; }
u8 source() const { return m_source; }
u32 gsi() const { return m_global_system_interrupt; }
u16 flags() const { return m_flags; }
private:
const u8 m_bus;
const u8 m_source;
const u32 m_global_system_interrupt;
const u16 m_flags;
};
class InterruptManagement {
public:
static InterruptManagement& the();
static void initialize();
static bool initialized();
static u8 acquire_mapped_interrupt_number(u8 original_irq);
static u8 acquire_irq_number(u8 mapped_interrupt_vector);
virtual void switch_to_pic_mode();
virtual void switch_to_ioapic_mode();
bool smp_enabled() const { return m_smp_enabled; }
RefPtr<IRQController> get_responsible_irq_controller(u8 interrupt_vector);
const Vector<ISAInterruptOverrideMetadata>& isa_overrides() const { return m_isa_interrupt_overrides; }
u8 get_mapped_interrupt_vector(u8 original_irq);
u8 get_irq_vector(u8 mapped_interrupt_vector);
void enumerate_interrupt_handlers(Function<void(GenericInterruptHandler&)>);
IRQController& get_interrupt_controller(int index);
protected:
virtual ~InterruptManagement() = default;
private:
InterruptManagement();
PhysicalAddress search_for_madt();
void locate_apic_data();
bool m_smp_enabled { false };
Vector<RefPtr<IRQController>> m_interrupt_controllers;
Vector<ISAInterruptOverrideMetadata> m_isa_interrupt_overrides;
Vector<PCIInterruptOverrideMetadata> m_pci_interrupt_overrides;
PhysicalAddress m_madt;
};
}
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