apic.h

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#pragma once
 
#include <cpu_io.h>
 
#include <array>
#include <cstdint>
 
#include "expected.hpp"
#include "io_apic.h"
#include "local_apic.h"
 
class Apic {
 public:
  [[nodiscard]] auto InitCurrentCpuLocalApic() -> Expected<void>;
 
  [[nodiscard]] auto SetIrqRedirection(uint8_t irq, uint8_t vector,
                                       uint32_t destination_apic_id,
                                       bool mask = false) -> Expected<void>;
 
  [[nodiscard]] auto MaskIrq(uint8_t irq) -> Expected<void>;
 
  [[nodiscard]] auto UnmaskIrq(uint8_t irq) -> Expected<void>;
 
  [[nodiscard]] auto SendIpi(uint32_t target_apic_id, uint8_t vector) const
      -> Expected<void>;
 
  [[nodiscard]] auto BroadcastIpi(uint8_t vector) const -> Expected<void>;
 
  [[nodiscard]] auto StartupAp(uint32_t apic_id, uint64_t ap_code_addr,
                               size_t ap_code_size, uint64_t target_addr) const
      -> Expected<void>;
 
  auto StartupAllAps(uint64_t ap_code_addr, size_t ap_code_size,
                     uint64_t target_addr) const -> void;
 
  auto SendEoi() const -> void;
 
  auto SetupPeriodicTimer(uint32_t frequency_hz, uint8_t vector) const -> void;
 
  explicit Apic(const size_t cpu_count);
  Apic() = default;
  Apic(const Apic&) = delete;
  Apic(Apic&&) = default;
  auto operator=(const Apic&) -> Apic& = delete;
  auto operator=(Apic&&) -> Apic& = default;
  ~Apic() = default;
 
  auto PrintInfo() const -> void;
 
 private:
  LocalApic local_apic_{};
 
  IoApic io_apic_{};
 
  size_t cpu_count_{0};
};