/* $NetBSD: iris_cons.c,v 1.1 2019/01/12 16:44:47 tsutsui Exp $ */
/*
* Copyright (c) 2018 Naruaki Etomi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Silicon Graphics "IRIS" series MIPS processors machine bootloader.
* Front end of Zilog Z8530 Dual UART driver.
*/
#include <lib/libsa/stand.h>
#include <machine/cpu.h>
#include "iris_machdep.h"
#include "iris_cons.h"
#include "iris_zs.h"
void zscnprobe(struct consdev *);
void zscninit(struct consdev *);
void zscnputchar(void *, int);
int zscngetchar(void *);
int zscnscan(void *);
#define ZSCHAN 0x0
#define ZSSPEED 9600
struct consdev constab[] = {
{ "zs", ZSCHAN, ZSSPEED,
zscnprobe, zscninit, zscngetchar, zscnputchar, zscnscan },
{ 0 }
};
struct consdev *cn_tab;
char *
cninit(int *addr, int *speed)
{
struct consdev *cp;
cn_tab = NULL;
for (cp = constab; cp->cn_probe; cp++) {
(*cp->cn_probe)(cp);
if (cp->cn_pri > CN_DEAD &&
(cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
cn_tab = cp;
}
if (cn_tab) {
(*cn_tab->cn_init)(cn_tab);
*addr = cn_tab->address;
*speed = cn_tab->speed;
return cn_tab->cn_name;
}
return NULL;
}
int
cngetc(void)
{
if (cn_tab)
return (*cn_tab->cn_getc)(cn_tab->cn_dev);
return 0;
}
void
cnputc(int c)
{
if (cn_tab)
(*cn_tab->cn_putc)(cn_tab->cn_dev, c);
}
int
cnscan(void)
{
if (cn_tab)
return (*cn_tab->cn_scan)(cn_tab->cn_dev);
return -1;
}
void
zscnprobe(struct consdev *cp)
{
cp->cn_pri = CN_REMOTE;
}
void
zscninit(struct consdev *cp)
{
cp->cn_dev = zs_init(cp->address, cp->speed);
}
int
zscngetchar(void *dev)
{
return zscngetc(dev);
}
void
zscnputchar(void *dev, int c)
{
if (c == '\n')
zscnputc(dev, '\r');
zscnputc(dev, c);
}
int
zscnscan(void *dev)
{
return zscnscanc(dev);
}