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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
#include <Kernel/Interrupts/IRQController.h>
namespace Kernel {
static constexpr size_t pic_disabled_vector_base = 0x20;
static constexpr size_t pic_disabled_vector_end = 0x2f;
class PIC final : public IRQController {
public:
PIC();
virtual void enable(const GenericInterruptHandler&) override;
virtual void disable(const GenericInterruptHandler&) override;
virtual void hard_disable() override;
virtual void eoi(const GenericInterruptHandler&) const override;
virtual bool is_vector_enabled(u8 number) const override;
virtual bool is_enabled() const override;
virtual void spurious_eoi(const GenericInterruptHandler&) const override;
virtual u16 get_isr() const override;
virtual u16 get_irr() const override;
virtual u32 gsi_base() const override { return 0; }
virtual size_t interrupt_vectors_count() const override { return 16; }
virtual StringView model() const override { return "Dual i8259"sv; }
virtual IRQControllerType type() const override { return IRQControllerType::i8259; }
private:
u16 m_cached_irq_mask { 0xffff };
void eoi_interrupt(u8 irq) const;
void enable_vector(u8 number);
void remap(u8 offset);
void complete_eoi() const;
virtual void initialize() override;
};
}
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