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/* $OpenBSD: unixcons.c,v 1.2 2008/01/23 16:37:57 jsing Exp $ */
/*
* Copyright (c) 1997-1999 Michael Shalayeff
* 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 OR HIS RELATIVES 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 MIND, 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.
*/
#include <sys/types.h>
#include <dev/cons.h>
#include "libsa.h"
#include "unixdev.h"
struct termios tioc;
int tioc_valid = 0;
#define NCOM 3
const char *compath[NCOM] = {
"/dev/ttyS0", /* com0 */
"/dev/ttyS2", /* com1 */
"/dev/ttyS1" /* com2 */
};
int com_fd = -1; /* open serial port */
int com_speed = 9600; /* default speed is 9600 baud */
/* Local prototypes */
void common_putc(dev_t, int);
int common_getc(dev_t);
void
common_putc(dev_t dev, int c)
{
/* Always send to stdout. */
(void)uwrite(1, &c, 1);
/* Copy to serial if open. */
if (com_fd != -1)
(void)uwrite(com_fd, &c, 1);
}
int
common_getc(dev_t dev)
{
struct timeval tv;
fd_set fdset;
int fd, nfds, n;
char c;
while (1) {
tv.tv_sec = 0;
tv.tv_usec = 10000;
FD_ZERO(&fdset);
/* Always read from stdin. */
fd = 0;
nfds = 1;
FD_SET(fd, &fdset);
/* Read from serial if open. */
if (com_fd != -1) {
nfds = com_fd+1;
FD_SET(com_fd, &fdset);
}
n = uselect(nfds, &fdset, NULL, NULL, &tv);
if ((dev & 0x80) != 0)
return (n > 0);
if (n > 0)
break;
}
for (fd = 0; fd < nfds; fd++)
if (FD_ISSET(fd, &fdset))
break;
return (uread(fd, &c, 1) < 1 ? -1 : c);
}
void
cn_probe(struct consdev *cn)
{
cn->cn_pri = CN_MIDPRI;
cn->cn_dev = makedev(0,0);
printf("cn%d ", minor(cn->cn_dev));
}
void
cn_init(struct consdev *cn)
{
struct termios t;
if (!tioc_valid && tcgetattr(0, &t) == 0) {
tioc = t;
tioc_valid = 1;
cfmakeraw(&t);
(void)tcsetattr(0, TCSAFLUSH, &t);
}
}
void
cn_putc(dev_t dev, int c)
{
common_putc(dev, c);
}
int
cn_getc(dev_t dev)
{
return (common_getc(dev));
}
void
com_probe(struct consdev *cn)
{
int i;
struct linux_stat sb;
for (i = 0; i < NCOM; i++) {
if (ustat(compath[i], &sb) != 0)
continue;
printf("com%d ", i);
}
cn->cn_pri = CN_LOWPRI;
/* XXX from arm/conf.c */
cn->cn_dev = makedev(12, 0);
}
void
com_init(struct consdev *cn)
{
struct termios t;
int unit = minor(cn->cn_dev);
if (unit >= NCOM)
return;
if (com_fd != -1)
uclose(com_fd);
com_fd = uopen(compath[unit], O_RDWR);
if (com_fd == -1)
return;
if (tcgetattr(com_fd, &t) == 0) {
cfmakeraw(&t);
cfsetspeed(&t, (speed_t)com_speed);
(void)tcsetattr(com_fd, TCSAFLUSH, &t);
}
}
void
com_putc(dev_t dev, int c)
{
common_putc(dev, c);
}
int
com_getc(dev_t dev)
{
return (common_getc(dev));
}
int
cnspeed(dev_t dev, int sp)
{
if (major(dev) == 12) /* comN */
return (comspeed(dev, sp));
/* cn0 or anything else */
return (9600);
}
/* call with sp == 0 to query the current speed */
int
comspeed(dev_t dev, int sp)
{
struct termios t;
if (sp <= 0)
return (com_speed);
/* check if the new speed is a valid baud rate */
if (cfsetspeed(&t, (speed_t)sp) != 0)
sp = com_speed;
if (cn_tab && cn_tab->cn_dev == dev && com_speed != sp) {
printf("com%d: changing speed to %d baud in 5 seconds, "
"change your terminal to match!\n\a",
minor(dev), sp);
sleep(5);
if (com_fd != -1 && tcgetattr(com_fd, &t) == 0) {
(void)cfsetspeed(&t, (speed_t)sp);
(void)tcsetattr(com_fd, TCSAFLUSH, &t);
}
printf("\n");
}
if (com_speed != sp) {
printf("com%d: %d baud\n", minor(dev), sp);
com_speed = sp;
}
return (com_speed);
}
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