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/*
* This include file contains all console driver definations for the nc16550
*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <rtems.h>
#include <libchip/serial.h>
#include <libchip/ns16550.h>
#include <bsp.h>
typedef struct uart_reg
{
unsigned char reg;
unsigned char pad[7];
} uartReg;
uint8_t Read_ns16550_register(
uint32_t ulCtrlPort,
uint8_t ucRegNum
)
{
volatile struct uart_reg *p = (volatile struct uart_reg *)ulCtrlPort;
uint8_t ucData;
ucData = p[ucRegNum].reg;
__asm__ volatile("sync");
return ucData;
}
void Write_ns16550_register(
uint32_t ulCtrlPort,
uint8_t ucRegNum,
uint8_t ucData
)
{
volatile struct uart_reg *p = (volatile struct uart_reg *)ulCtrlPort;
volatile int i;
p[ucRegNum].reg = ucData;
__asm__ volatile("sync");
__asm__ volatile("isync");
__asm__ volatile("eieio");
for (i=0;i<0x08ff;i++)
__asm__ volatile("isync");
}
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