#ifndef SERIAL_H
#define SERIAL_H
/* All the I/O ports are calculated relative to the data port. This is
   because all serial ports have their ports in the same order but they
   start at different values.
*/

#define COM1_PORT 						0x3F8

#define SERIAL_DATA_PORT(base)			(base)
#define SERIAL_FIFO_COMMAND_PORT(base) 	(base + 2)
#define SERIAL_LINE_COMMAND_PORT(base) 	(base + 3)
#define SERIAL_MODEM_COMMAND_PORT(base) (base + 4)
#define SERIAL_LINE_STATUS_PORT(base) 	(base + 5)

// Tells the serial port to expect the highest 8 bits on the data port first,
// followed by the lowest 8 bits.
#define SERIAL_LINE_ENABLE_DLAB 		0x80

void set_serial_baud_rate(unsigned short, unsigned short);
void configure_serial_line(unsigned short);
int serial_transmit_fifo_empty(unsigned int);
#endif