#ifndef ARCH_ACPI_LOCAL_APIC_HPP_
#define ARCH_ACPI_LOCAL_APIC_HPP_

#include <socks/status.h>
#include <stdint.h>

#define APIC_LVT_INT_MASKED 0x10000
#define APIC_LVT_TIMER_MODE_PERIODIC 0x20000

struct acpi_madt;

namespace arch::acpi {
class local_apic {
	uint32_t *base_ = nullptr;

public:
	enum {
		EOI = 0xB0,
		IPI_STATUS = 0x280,
		IPI_ICR = 0x300,
		IPI_DEST = 0x310,
		LVT_TIMER = 0x320,
		TIMER_INITCOUNT = 0x380,
		TIMER_CURCOUNT = 0x390,
		TIMER_DIV = 0x3E0,
	};

	local_apic(uint32_t *base = nullptr);

	static kern_status_t find(struct acpi_madt *madt, local_apic& out);
	static local_apic& get(void);

	uint32_t read(uint32_t reg);
	void write(uint32_t reg, uint32_t val);
	void ack();

	uint32_t *ptr() const { return base_; }

	void send_ipi(unsigned int dest, unsigned int data);
};
}

#endif