/* -------------------------------------------

  Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.

  File: HPET.h
  Purpose: HPET builtin.

  Revision History:

------------------------------------------- */

#pragma once

#include <NeKit/Defines.h>
#include <modules/ACPI/ACPI.h>

namespace Kernel {
struct PACKED HPETAddressStructure final {
  Kernel::UInt8  AddressSpaceId;  // 0 - system memory, 1 - system I/O
  Kernel::UInt8  RegisterBitWidth;
  Kernel::UInt8  RegisterBitOffset;
  Kernel::UInt8  Reserved;
  Kernel::UInt64 Address;
};

struct PACKED HPETHeader final : public SDT {
  Kernel::UInt8        HardwareRevId;
  Kernel::UInt8        ComparatorCount : 5;
  Kernel::UInt8        CounterSize : 1;
  Kernel::UInt8        Reserved : 1;
  Kernel::UInt8        LegacyReplacement : 1;
  Kernel::UInt16       PciVendorId;
  HPETAddressStructure Address;
  Kernel::UInt8        HpetNumber;
  Kernel::UInt16       MinimumTick;
  Kernel::UInt8        PageProtection;
};

}  // namespace Kernel