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/*
* Copyright (C) 1993, 1994 by
* Digital Equipment Corporation, Maynard, Massachusetts.
* All rights reserved.
*
* This software is furnished under a license and may be used and copied
* only in accordance of the terms of such license and with the
* inclusion of the above copyright notice. This software or any other
* copies thereof may not be provided or otherwise made available to any
* other person. No title to and ownership of the software is hereby
* transferred.
*
* The information in this software is subject to change without notice
* and should not be construed as a commitment by Digital Equipment
* Corporation.
*
* Digital assumes no responsibility for the use or reliability of its
* software on equipment which is not supplied by Digital.
*
*/
/*$Id$*/
#include "nwtypes.h"
#include "alpha-uart.h"
/*#include "alphansi.h"*/
#include "alpha-patch.h"
#include <stdio.h>
ULONG com_interrupt()
{
if (inVti(com1Lsr) & 1)
return COM1 | inVti (com1Rbr);
return 0;
}
void
putcLpt(int c)
{
int i, s;
while(!((s = inVti(lptSr)) & 0x80))
;
for(i=0;i<lptDly;++i)
;
outVti(lptDr, c);
for(i=0;i<lptDly;++i)
;
outVti(lptCr, lptnInit|lptSTB|lptAFD);
for(i=0;i<lptDly;++i)
;
outVti(lptCr, lptnInit|lptAFD);
for(i=0;i<lptDly;++i)
;
s = inVti(lptSr);
}
void
uart_putchar(int port, char c)
{
int lsr, thr;
switch(port)
{
case COM1:
lsr = com1Lsr;
thr = com1Thr;
break;
case COM2:
lsr = com2Lsr;
thr = com2Thr;
break;
#if 0
case LPT:
putcLpt(c);
return;
case VGA:
vga_putc(c);
return;
#endif
default:
return;
}
while ((inVti(lsr) & 0x20) == 0);
outVti(thr,c);
if (c == '\n') uart_putchar(port, '\r');
}
int uart_init_line(int line, int baud)
{
int i;
int baudconst;
switch (baud)
{
case 57600: baudconst = 2; break;
case 38400: baudconst = 3; break;
case 19200: baudconst = 6; break;
case 9600: baudconst = 12; break;
case 4800: baudconst = 24; break;
case 2400: baudconst = 48; break;
case 1200: baudconst = 96; break;
case 300: baudconst = 384; break;
case 150: baudconst = 768; break;
default: baudconst = 12; break;
}
if (line == 1)
{
outVti(com1Lcr, 0x87);
outVti(com1Dlm, 0);
outVti(com1Dll, baudconst);
outVti(com1Lcr, 0x07);
outVti(com1Mcr, 0x0F);
com1_disable_int();
}
else if (line == 2)
{
outVti(com2Lcr, 0x87);
outVti(com2Dlm, 0);
outVti(com2Dll, baudconst);
outVti(com2Lcr, 0x07);
outVti(com2Mcr, 0x0F);
}
fprintf (stderr, "com1Ier = 0x%x\n", inVti(com1Ier));
fprintf (stderr, "com1Lcr = 0x%x\n", inVti(com1Lcr));
fprintf (stderr, "com1Dlm = 0x%x\n", inVti(com1Dlm));
fprintf (stderr, "com1Dll = 0x%x\n", inVti(com1Dll));
fprintf (stderr, "com1Lcr = 0x%x\n", inVti(com1Lcr));
fprintf (stderr, "com1Mcr = 0x%x\n", inVti(com1Mcr));
}
int
uart_init()
{
uart_init_line(1, 19200);
}
com1_enable_int()
{
outVti(com1Ier, 0x01);
}
com1_disable_int()
{
outVti(com1Ier, 0x0);
}
com2_enable_int()
{
outVti(com2Ier, 0x01);
}
com2_disable_int()
{
outVti(com2Ier, 0x0);
}
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