47 lines
910 B
C++
47 lines
910 B
C++
#pragma once
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#include <kernel/Interruptable.h>
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#include <kernel/Lock/SpinLock.h>
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#include <kernel/Timer/Timer.h>
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namespace Kernel
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{
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struct HPETRegisters;
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class HPET final : public Timer, public Interruptable
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{
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public:
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static BAN::ErrorOr<BAN::UniqPtr<HPET>> create(bool force_pic);
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~HPET();
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virtual uint64_t ms_since_boot() const override;
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virtual uint64_t ns_since_boot() const override;
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virtual timespec time_since_boot() const override;
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virtual void handle_irq() override;
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private:
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HPET() = default;
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BAN::ErrorOr<void> initialize(bool force_pic);
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volatile HPETRegisters& registers();
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const volatile HPETRegisters& registers() const;
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uint64_t read_main_counter() const;
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private:
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mutable SpinLock m_lock;
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bool m_is_64bit { false };
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uint64_t m_last_ticks { 0 };
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uint32_t m_32bit_wraps { 0 };
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uint32_t m_ticks_per_s { 0 };
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vaddr_t m_mmio_base { 0 };
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};
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}
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