int
dartopen(dev_t dev, int flag, int mode, struct proc *p)
{
int s, port;
struct dart_info *dart;
struct dartsoftc *sc;
struct tty *tp;
port = DART_PORT(dev);
if (dart_cd.cd_ndevs == 0 || port >= NDARTPORTS)
return (ENODEV);
sc = (struct dartsoftc *)dart_cd.cd_devs[0]; /* the only one */
dart = &sc->sc_dart[port];
s = spltty();
if (dart->tty != NULL)
tp = dart->tty;
else
tp = dart->tty = ttymalloc();
tp->t_oproc = dartstart;
tp->t_param = dartparam;
tp->t_dev = dev;
if ((tp->t_state & TS_ISOPEN) == 0) {
ttychars(tp);
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_ispeed = tp->t_ospeed = B9600;
dartparam(tp, &tp->t_termios);
if (port == CONS_PORT) {
/* console is 8N1 */
tp->t_cflag = (CREAD | CS8 | HUPCL);
} else {
tp->t_cflag = TTYDEF_CFLAG;
}
ttsetwater(tp);
(void)dartmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET);
tp->t_state |= TS_CARR_ON;
} else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) {
splx(s);
return (EBUSY);
}
/*
* Reset the tty pointer, as there could have been a dialout
* use of the tty with a dialin open waiting.
*/
tp->t_dev = dev;
splx(s);
return ((*linesw[tp->t_line].l_open)(dev, tp));
}
int
dartopen(dev_t dev, int flag, int mode, struct proc *p)
{
int s;
u_int port, chip;
struct dart_info *dart;
struct dartsoftc *sc;
struct tty *tp;
chip = DART_CHIP(dev);
port = DART_PORT(dev);
if (dart_cd.cd_ndevs <= chip || port >= NDARTPORTS)
return (ENODEV);
sc = (struct dartsoftc *)dart_cd.cd_devs[chip];
if (sc == NULL)
return (ENODEV);
dart = &sc->sc_dart[port];
s = spltty();
if (dart->tty != NULL)
tp = dart->tty;
else
tp = dart->tty = ttymalloc(0);
tp->t_oproc = dartstart;
tp->t_param = dartparam;
tp->t_dev = dev;
if ((tp->t_state & TS_ISOPEN) == 0) {
ttychars(tp);
if (tp->t_ispeed == 0) {
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_ispeed = tp->t_ospeed = B9600;
if (sc->sc_console && port == CONS_PORT) {
/* console is 8N1 */
tp->t_cflag = (CREAD | CS8 | HUPCL);
} else {
tp->t_cflag = TTYDEF_CFLAG;
}
}
if (dart->dart_swflags & TIOCFLAG_CLOCAL)
tp->t_cflag |= CLOCAL;
if (dart->dart_swflags & TIOCFLAG_CRTSCTS)
tp->t_cflag |= CRTSCTS;
if (dart->dart_swflags & TIOCFLAG_MDMBUF)
tp->t_cflag |= MDMBUF;
dartparam(tp, &tp->t_termios);
ttsetwater(tp);
(void)dartmctl(sc, port, TIOCM_DTR | TIOCM_RTS, DMSET);
tp->t_state |= TS_CARR_ON;
} else if (tp->t_state & TS_XCLUDE && suser(p, 0) != 0) {
splx(s);
return (EBUSY);
}
/*
* Reset the tty pointer, as there could have been a dialout
* use of the tty with a dialin open waiting.
*/
tp->t_dev = dev;
splx(s);
return ((*linesw[tp->t_line].l_open)(dev, tp, p));
}
