freebsd-dev/sys/gnu/isdn/iitty.c
Bruce Evans 3aa12267a5 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) that I didn't notice when I fixed
"all" such warnings before.
1995-03-28 07:58:53 +00:00

359 lines
7.6 KiB
C

static char _ittyid[] = "@(#)$Id: iitty.c,v 1.4 1995/02/28 00:20:30 pst Exp $";
/*******************************************************************************
* II - Version 0.1 $Revision: 1.4 $ $State: Exp $
*
* Copyright 1994 Dietmar Friede
*******************************************************************************
* Bug reports, patches, comments, suggestions should be sent to:
*
* jkr@saarlink.de or jkrause@guug.de
*
*******************************************************************************
* $Log: iitty.c,v $
* Revision 1.4 1995/02/28 00:20:30 pst
* Incorporate bde's code-review comments.
*
* (a) bring back ttselect, now that we have xxxdevtotty() it isn't dangerous.
* (b) remove all of the wrappers that have been replaced by ttselect
* (c) fix formatting in syscons.c and definition in syscons.h
* (d) add cxdevtotty
*
* NOT DONE:
* (e) make pcvt work... it was already broken...when someone fixes pcvt to
* link properly, just rename get_pccons to xxxdevtotty and we're done
*
* Revision 1.3 1995/02/25 20:08:52 pst
* (a) remove the pointer to each driver's tty structure array from cdevsw
* (b) add a function callback vector to tty drivers that will return a pointer
* to a valid tty structure based upon a dev_t
* (c) make syscons structures the same size whether or not APM is enabled so
* utilities don't crash if NAPM changes (and make the damn kernel compile!)
* (d) rewrite /dev/snp ioctl interface so that it is device driver and i386
* independant
*
* Revision 1.2 1995/02/15 06:28:28 jkh
* Fix up include paths, nuke some warnings.
*
* Revision 1.1 1995/02/14 15:00:32 jkh
* An ISDN driver that supports the EDSS1 and the 1TR6 ISDN interfaces.
* EDSS1 is the "Euro-ISDN", 1TR6 is the soon obsolete german ISDN Interface.
* Obtained from: Dietmar Friede <dfriede@drnhh.neuhaus.de> and
* Juergen Krause <jkr@saarlink.de>
*
* This is only one part - the rest to follow in a couple of hours.
* This part is a benign import, since it doesn't affect anything else.
*
*
******************************************************************************/
#include "ity.h"
#if NITY > 0
#include "param.h"
#include "systm.h"
#include "ioctl.h"
#include "select.h"
#include "tty.h"
#include "proc.h"
#include "user.h"
#include "conf.h"
#include "file.h"
#include "uio.h"
#include "kernel.h"
#include "syslog.h"
#include "types.h"
#include "gnu/isdn/isdn_ioctl.h"
int ityparam();
void itystart();
int nity = NITY;
int itydefaultrate = 64000;
short ity_addr[NITY];
struct tty ity_tty[NITY];
static int applnr[NITY];
static int next_if= 0;
#define UNIT(x) (minor(x)&0x3f)
#define OUTBOUND(x) ((minor(x)&0x80)==0x80)
int
ityattach(int ap)
{
if(next_if >= NITY)
return(-1);
applnr[next_if]= ap;
return(next_if++);
}
/* ARGSUSED */
int
ityopen(dev_t dev, int flag, int mode, struct proc * p)
{
register struct tty *tp;
register int unit;
int error = 0;
unit = UNIT(dev);
if (unit >= next_if)
return (ENXIO);
tp = &ity_tty[unit];
tp->t_oproc = itystart;
tp->t_param = ityparam;
tp->t_dev = dev;
if ((tp->t_state & TS_ISOPEN) == 0)
{
tp->t_state |= TS_WOPEN;
ttychars(tp);
if (tp->t_ispeed == 0)
{
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_cflag = TTYDEF_CFLAG;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_ispeed = tp->t_ospeed = itydefaultrate;
}
ityparam(tp, &tp->t_termios);
ttsetwater(tp);
} else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
return (EBUSY);
(void) spltty();
if(OUTBOUND(dev)) tp->t_cflag |= CLOCAL;
while ((flag & O_NONBLOCK) == 0 && (tp->t_cflag & CLOCAL) == 0 &&
(tp->t_state & TS_CARR_ON) == 0)
{
tp->t_state |= TS_WOPEN;
if (error = ttysleep(tp, (caddr_t) & tp->t_rawq, TTIPRI | PCATCH,
ttopen, 0))
break;
}
(void) spl0();
if (error == 0)
error = (*linesw[tp->t_line].l_open) (dev, tp);
return (error);
}
/* ARGSUSED */
int
ityclose(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
register struct tty *tp;
register ity;
register int unit;
unit = UNIT(dev);
ity = ity_addr[unit];
if(tp = &ity_tty[unit])
(*linesw[tp->t_line].l_close) (tp, flag);
ttyclose(tp);
isdn_disconnect(applnr[unit],0);
return (0);
}
int
ityread(dev, uio, flag)
dev_t dev;
struct uio *uio;
int flag;
{
register struct tty *tp = &ity_tty[UNIT(dev)];
return ((*linesw[tp->t_line].l_read) (tp, uio, flag));
}
int
itywrite(dev, uio, flag)
dev_t dev;
struct uio *uio;
int flag;
{
int unit = UNIT(dev);
register struct tty *tp = &ity_tty[unit];
return ((*linesw[tp->t_line].l_write) (tp, uio, flag));
}
int
ity_input(int no, int len, char *buf)
{
register struct tty *tp = &ity_tty[no];
int i;
if (tp->t_state & TS_ISOPEN)
for(i= 0; i<len; i++)
(*linesw[tp->t_line].l_rint)(buf[i], tp);
else len= 0;
return(len);
}
void
itystart(struct tty *tp)
{
int s, unit;
unit = UNIT(tp->t_dev);
s = splhigh();
if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))
{
splx(s);
return;
}
if (tp->t_outq.c_cc <= tp->t_lowat)
{
if (tp->t_state & TS_ASLEEP)
{
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t) & tp->t_outq);
}
selwakeup(&tp->t_wsel);
}
if (tp->t_outq.c_cc)
{
if(OUTBOUND(tp->t_dev) && (tp->t_cflag & CLOCAL) &&
((tp->t_state & TS_CARR_ON) == 0))
isdn_msg(applnr[unit]);
else isdn_output(applnr[unit]);
tp->t_state |= TS_BUSY;
}
splx(s);
}
int
ity_out(int no, char *buf, int len)
{
struct tty *tp = &ity_tty[no];
int i;
if(tp == NULL)
return(0);
if(tp->t_outq.c_cc)
{
for (i = 0; i < len && tp->t_outq.c_cc; ++i)
buf[i]= getc(&tp->t_outq);
return(i);
}
tp->t_state &=~ (TS_BUSY|TS_FLUSH);
if (tp->t_line)
(*linesw[tp->t_line].l_start)(tp);
else
itystart(tp);
return(0);
}
void
ity_connect(int no)
{
struct tty *tp = &ity_tty[no];
if(tp == NULL)
return;
if(OUTBOUND(tp->t_dev)) tp->t_cflag &= ~CLOCAL;
(*linesw[tp->t_line].l_modem) (tp, 1);
tp->t_state |= TS_CARR_ON;
tp->t_state &=~ (TS_BUSY|TS_FLUSH);
if (tp->t_line)
(*linesw[tp->t_line].l_start)(tp);
else
itystart(tp);
}
void
ity_disconnect(int no)
{
struct tty *tp = &ity_tty[no];
if(tp) (*linesw[tp->t_line].l_modem) (tp, 0);
}
int
ityioctl(dev, cmd, data, flag,p)
dev_t dev;
int cmd;
caddr_t data;
int flag;
struct proc *p;
{
register struct tty *tp;
register int unit = UNIT(dev);
register int error;
tp = &ity_tty[unit];
error = (*linesw[tp->t_line].l_ioctl) (tp, cmd, data, flag,p);
if (error >= 0)
return (error);
error = ttioctl(tp, cmd, data, flag);
if (error >= 0)
return (error);
switch (cmd)
{
default:
return (ENOTTY);
}
return (0);
}
int
ityparam(tp, t)
register struct tty *tp;
register struct termios *t;
{
register ity;
register int cfcr, cflag = t->c_cflag;
int unit = UNIT(tp->t_dev);
int ospeed = t->c_ospeed;
/* check requested parameters */
if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed))
return (EINVAL);
/* and copy to tty */
tp->t_ispeed = t->c_ispeed;
tp->t_ospeed = t->c_ospeed;
tp->t_cflag = cflag;
if (ospeed == 0)
{
isdn_disconnect(applnr[unit],0);
return (0);
}
return (0);
}
/*
* Stop output on a line.
*/
/* ARGSUSED */
void
itystop(struct tty *tp, int flag)
{
register int s;
s = splhigh();
if (tp->t_state & TS_BUSY)
{
if ((tp->t_state & TS_TTSTOP) == 0)
tp->t_state |= TS_FLUSH;
}
splx(s);
}
struct tty *
itydevtotty(dev_t dev)
{
register int unit = UNIT(dev);
if (unit >= next_if)
return (NULL);
return (&ity_tty[unit]);
}
#endif