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#include <console/chardev.h>

#define SERIAL_MAX        4

#define SERIAL_COM1       0x3f8

#define SERIAL_COM1_IRQ   4

#define SERIAL_COM2       0x2f8

#define SERIAL_COM2_IRQ   3

#define P_WRITEB(where, what)     (*((volatile char *) (SERIAL_ADDRESS + where)) = what)

#define P_READB(where)            (*((volatile char *) (SERIAL_ADDRESS + where)))

#define SERIAL_READ(x)            P_READB(x)

#define SERIAL_WRITE(x, c)        P_WRITEB(x, c)

/* Interrupt enable register */

#define SERIAL_READ_IER(x)              (P_READB((x) + 1))

#define SERIAL_WRITE_IER(x,c)           (P_WRITEB((x) + 1, c))

/* Interrupt identification register */

#define SERIAL_READ_IIR(x)             (P_READB((x) + 2))

/* Line status register */

#define SERIAL_READ_LSR(x)             (P_READB((x) + 5))

#define TRANSMIT_EMPTY_BIT      5          

typedef struct {

    int port;

    int irq;

}serial_t;

extern void serial_console(devno_t devno);

extern int serial_init(void);