#ifndef MY_KERNEL_DRIVERS_PORT_H
#define MY_KERNEL_DRIVERS_PORT_H

//http://www.osdever.net/FreeVGA/vga/crtcreg.htm#0A
#define PORT_REG_SCREEN_CTRL 0x3d4
#define PORT_REG_SCREEN_CTRL_CURSOR_H 0x0E
#define PORT_REG_SCREEN_CTRL_CURSOR_L 0x0F
#define PORT_REG_SCREEN_DATA 0x3d5

// https://wiki.osdev.org/Serial_Ports
#define PORT_SERIAL_0 0x3f8
#define PORT_SERIAL_1 0x2f8
#define PORT_SERIAL_2 0x3e8
#define PORT_SERIAL_3 0x2e8

#define PORT_SERIAL_DATA 0
#define PORT_SERIAL_INTERRUPT 1
#define PORT_SERIAL_DLAB_LSB 0
#define PORT_SERIAL_DLAB_MSB 1
#define PORT_SERIAL_INTERRUPT_ID_FIFO 2
#define PORT_SERIAL_LINE_CONTROL 3
#define PORT_SERIAL_MODEM_CONTROL 4
#define PORT_SERIAL_LINE_STATUS 5
#define PORT_SERIAL_MODEM_STATUS 6
#define PORT_SERIAL_SCRATCH 6

// https://wiki.osdev.org/PIT
#define PORT_PIT_COMMAND 0x43
#define PIT_MODE_BIN 0x0
#define PIT_MODE_HW_STROBE 0b0101
#define PIT_MODE_SQUARE_WAVE 0b0110
#define PIT_ACCESS_MODE_HL 0b000011
#define PIT_CHANNEL_0 0b00000000
#define PORT_PIT_DATA_0 0x40
#define PORT_PIT_DATA_1 0x41
#define PORT_PIT_DATA_3 0x42

// https://wiki.osdev.org/%228042%22_PS/2_Controller
#define PORT_PS2_DATA 0x60
#define PORT_PS2_STATUS 0x64
#define PORT_PS2_COMMAND 0x64

unsigned char port_byte_in(unsigned short port);

void port_byte_out(unsigned short port, unsigned char data);

unsigned short port_word_in(unsigned short port);

void port_word_out(unsigned short port, unsigned short data);

#endif