ns16550.h File Reference

16550-compatible UART More...

#include <stdint.h>
#include <ipxe/io.h>

Go to the source code of this file.

Macros
#define	COM1_BASE   0x3f8
#define	COM2_BASE   0x2f8
#define	COM3_BASE   0x3e8
#define	COM4_BASE   0x2e8
#define	COM1   &com1
#define	COM2   &com2
#define	COM3   &com3
#define	COM4   &com4

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
static	__attribute__ ((always_inline)) void ns16550_write(struct ns16550_uart *ns16550
	Write to UART register.

Variables
static unsigned int	address
static unsigned int uint8_t	data
struct uart	com1
struct uart	com2
struct uart	com3
struct uart	com4

Detailed Description

16550-compatible UART

Definition in file ns16550.h.

Macro Definition Documentation

COM1_BASE

#define COM1_BASE   0x3f8

Definition at line 43 of file ns16550.h.

Referenced by ISA_UART().

COM2_BASE

#define COM2_BASE   0x2f8

Definition at line 44 of file ns16550.h.

Referenced by ISA_UART().

COM3_BASE

#define COM3_BASE   0x3e8

Definition at line 45 of file ns16550.h.

Referenced by ISA_UART().

COM4_BASE

#define COM4_BASE   0x2e8

Definition at line 46 of file ns16550.h.

Referenced by ISA_UART().

COM1

#define COM1   &com1

Definition at line 55 of file ns16550.h.

Referenced by uart_register_fixed().

COM2

#define COM2   &com2

Definition at line 56 of file ns16550.h.

Referenced by uart_register_fixed().

COM3

#define COM3   &com3

Definition at line 57 of file ns16550.h.

Referenced by uart_register_fixed().

COM4

#define COM4   &com4

Definition at line 58 of file ns16550.h.

Referenced by uart_register_fixed().

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

__attribute__()

__attribute__ ( (always_inline) )

inlinestatic

Write to UART register.

Read from UART register.

Parameters

ns16550	16550 UART
address	Register address
data	Data
ns16550	16550 UART
address	Register address

Return values

data

Data

Variable Documentation

address

unsigned int address

Initial value:

{
 
        return ioread8 ( ns16550->base + address )

Definition at line 23 of file ns16550.h.

data

unsigned int uint8_t data

Initial value:

{
 
        iowrite8 ( data, ( ns16550->base + address ) )

Definition at line 24 of file ns16550.h.

com1

struct uart com1

extern

Referenced by ISA_UART().

com2

struct uart com2

extern

Referenced by ISA_UART().

com3

struct uart com3

extern

Referenced by ISA_UART().

com4

struct uart com4

extern

Referenced by ISA_UART().