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i4b_tel.c
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i4b_tel.c
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/*
* Copyright (c) 1997, 2000 Hellmuth Michaelis. 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 AND CONTRIBUTORS ``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 CONTRIBUTORS 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.
*
*---------------------------------------------------------------------------
*
* i4b_tel.c - device driver for ISDN telephony
* --------------------------------------------
*
* $Id: i4b_tel.c,v 1.22 2008/03/01 14:16:52 rmind Exp $
*
* $FreeBSD$
*
* last edit-date: [Fri Jan 5 11:33:47 2001]
*
*---------------------------------------------------------------------------*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: i4b_tel.c,v 1.22 2008/03/01 14:16:52 rmind Exp $");
#include "isdntel.h"
#if NISDNTEL > 0
#undef I4BTELDEBUG
#include <sys/param.h>
#include <sys/systm.h>
#if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__)
#include <sys/ioccom.h>
#include <sys/poll.h>
#else
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#endif
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/proc.h>
#include <sys/tty.h>
#ifdef __FreeBSD__
#if defined(__FreeBSD__) && __FreeBSD__ == 3
#include "opt_devfs.h"
#endif
#ifdef DEVFS
#include <sys/devfsext.h>
#endif
#endif /* __FreeBSD__ */
#ifdef __bsdi__
#include <sys/device.h>
#endif
#ifdef __FreeBSD__
#include <machine/i4b_ioctl.h>
#include <machine/i4b_tel_ioctl.h>
#include <machine/i4b_debug.h>
#else
#include <netisdn/i4b_ioctl.h>
#include <netisdn/i4b_tel_ioctl.h>
#include <netisdn/i4b_debug.h>
#endif
#include <netisdn/i4b_global.h>
#include <netisdn/i4b_mbuf.h>
#include <netisdn/i4b_l3l4.h>
#include <netisdn/i4b_l4.h>
/* minor number: lower 6 bits = unit number */
#define UNITBITS 6
#define UNITMASK 0x3f
#define UNIT(n) (minor(n) & UNITMASK)
/* minor number: upper 2 bits = function number */
#define FUNCMASK 0x03
#define FUNC(n) (((minor(n)) >> UNITBITS) & FUNCMASK)
#define FUNCTEL 0 /* 0 = normal i4btel device */
#define FUNCDIAL 1 /* 1 = i4bteld dialout device */
#define NOFUNCS 2 /* number of device classes */
typedef struct tel_softc {
/* used only in func = FUNCTEL */
isdn_link_t *isdn_linktab; /* isdn linktab */
int audiofmt; /* audio format conversion */
u_char *rcvttab; /* conversion table on read */
u_char *wcvttab; /* conversion table on write */
call_desc_t *cdp; /* call descriptor pointer */
/* link from FUNCTEL to FUNCDIAL */
struct tel_softc * dialer;
/* used only in func = FUNCDIAL */
char result; /* result code for dial dev */
/* used in func = FUNCDIAL and func = FUNCTEL*/
int devstate; /* state of this unit */
#define ST_IDLE 0x00 /* idle */
#define ST_CONNECTED 0x01 /* isdn connected state */
#define ST_ISOPEN 0x02 /* userland opened */
#define ST_RDWAITDATA 0x04 /* userland read waiting */
#define ST_WRWAITEMPTY 0x08 /* userland write waiting */
#define ST_TONE 0x10 /* tone generator */
struct selinfo selp; /* select / poll */
#if defined(__FreeBSD__) && __FreeBSD__ == 3
#ifdef DEVFS
void *devfs_token; /* token for DEVFS */
#endif
#endif
struct i4b_tel_tones tones;
int toneidx;
int toneomega;
int tonefreq;
} tel_sc_t;
static tel_sc_t tel_sc[NISDNTEL][NOFUNCS];
/* forward decl */
static void tel_rx_data_rdy(void *softc);
static void tel_tx_queue_empty(void *softc);
static void tel_connect(void *softc, void *cdp);
static void tel_disconnect(void *softc, void *cdp);
static void tel_tone(tel_sc_t *sc);
static void tel_activity(void *softc, int rxtx);
static void tel_updown(void *softc, int updown);
static void tel_dialresponse(void *softc, int status, cause_t cause);
static void* tel_get_softc(int unit);
static void tel_set_linktab(void *softc, isdn_link_t *ilt);
/* audio format conversion tables */
static unsigned char a2u_tab[];
static unsigned char u2a_tab[];
static unsigned char bitreverse[];
static u_char sinetab[];
#ifndef __FreeBSD__
#define PDEVSTATIC /* - not static - */
PDEVSTATIC void isdntelattach __P((void));
PDEVSTATIC int isdntelioctl __P((dev_t dev, u_long cmd, void *data, int flag, struct lwp *l));
int isdntelopen __P((dev_t dev, int flag, int fmt, struct lwp *l));
int isdntelclose __P((dev_t dev, int flag, int fmt, struct lwp *l));
int isdntelread __P((dev_t dev, struct uio *uio, int ioflag));
int isdntelwrite __P((dev_t dev, struct uio * uio, int ioflag));
#ifdef OS_USES_POLL
int isdntelpoll __P((dev_t dev, int events, struct lwp *l));
int isdntelkqfilter __P((dev_t dev, struct knote *kn));
#else
int isdntelsel __P((dev_t dev, int rw, struct lwp *l));
#endif
#endif /* __FreeBSD__ */
#ifdef __NetBSD__
const struct cdevsw isdntel_cdevsw = {
isdntelopen, isdntelclose, isdntelread, isdntelwrite, isdntelioctl,
nostop, notty, isdntelpoll, nommap, isdntelkqfilter, D_OTHER
};
#endif /* __NetBSD__ */
#if BSD > 199306 && defined(__FreeBSD__)
#define PDEVSTATIC static
PDEVSTATIC d_open_t i4btelopen;
PDEVSTATIC d_close_t i4btelclose;
PDEVSTATIC d_read_t i4btelread;
PDEVSTATIC d_read_t i4btelwrite;
PDEVSTATIC d_ioctl_t i4btelioctl;
#ifdef OS_USES_POLL
PDEVSTATIC d_poll_t i4btelpoll;
#define POLLFIELD i4btelpoll
#else
PDEVSTATIC d_select_t i4btelsel;
#define POLLFIELD i4btelsel
#endif
#define CDEV_MAJOR 56
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
static struct cdevsw i4btel_cdevsw = {
/* open */ i4btelopen,
/* close */ i4btelclose,
/* read */ i4btelread,
/* write */ i4btelwrite,
/* ioctl */ i4btelioctl,
/* poll */ POLLFIELD,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "i4btel",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* bmaj */ -1
};
#else
static struct cdevsw i4btel_cdevsw = {
i4btelopen, i4btelclose, i4btelread, i4btelwrite,
i4btelioctl, nostop, noreset, nodevtotty,
POLLFIELD, nommap, NULL, "i4btel", NULL, -1
};
#endif
PDEVSTATIC void isdntelinit(void *unused);
PDEVSTATIC void isdntelattach(void *);
PSEUDO_SET(isdntelattach, i4b_tel);
/*===========================================================================*
* DEVICE DRIVER ROUTINES
*===========================================================================*/
/*---------------------------------------------------------------------------*
* initialization at kernel load time
*---------------------------------------------------------------------------*/
PDEVSTATIC void
isdntelinit(void *unused)
{
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
cdevsw_add(&i4btel_cdevsw);
#else
dev_t dev = makedev(CDEV_MAJOR, 0);
cdevsw_add(&dev, &i4btel_cdevsw, NULL);
#endif
}
SYSINIT(i4bteldev, SI_SUB_DRIVERS,
SI_ORDER_MIDDLE+CDEV_MAJOR, &i4btelinit, NULL);
#endif /* BSD > 199306 && defined(__FreeBSD__) */
#ifdef __bsdi__
int i4btelsel(dev_t dev, int rw, struct lwp *l);
int i4btelmatch(struct device *parent, struct cfdata *cf, void *aux);
void dummy_i4btelattach(struct device*, struct device *, void *);
#define CDEV_MAJOR 62
static struct cfdriver i4btelcd =
{ NULL, "i4btel", i4btelmatch, dummy_i4btelattach, DV_DULL,
sizeof(struct cfdriver) };
struct devsw i4btelsw =
{ &i4btelcd,
i4btelopen, i4btelclose, i4btelread, i4btelwrite,
i4btelioctl, i4btelsel, nommap, nostrat,
nodump, nopsize, 0, nostop
};
int
i4btelmatch(struct device *parent, struct cfdata *cf, void *aux)
{
NDBGL4(L4_TELDBG, "aux=0x%x", aux);
return 1;
}
void
dummy_i4btelattach(struct device *parent, struct device *self, void *aux)
{
NDBGL4(L4_TELDBG, "aux=0x%x", aux);
}
#endif /* __bsdi__ */
static const struct isdn_l4_driver_functions
tel_driver = {
tel_rx_data_rdy,
tel_tx_queue_empty,
tel_activity,
tel_connect,
tel_disconnect,
tel_dialresponse,
tel_updown,
tel_get_softc,
tel_set_linktab,
NULL
};
static int isdntel_driver_id = -1;
/*---------------------------------------------------------------------------*
* interface attach routine
*---------------------------------------------------------------------------*/
PDEVSTATIC void
#ifdef __FreeBSD__
isdntelattach(void *dummy)
#else
isdntelattach()
#endif
{
int i, j;
isdntel_driver_id = isdn_l4_driver_attach("isdntel", NISDNTEL, &tel_driver);
for(i=0; i < NISDNTEL; i++)
{
for(j=0; j < NOFUNCS; j++)
{
selinit(&tel_sc[i][j].selp);
tel_sc[i][j].devstate = ST_IDLE;
tel_sc[i][j].audiofmt = CVT_NONE;
tel_sc[i][j].rcvttab = 0;
tel_sc[i][j].wcvttab = 0;
tel_sc[i][j].result = 0;
if (j == FUNCTEL)
tel_sc[i][FUNCTEL].dialer = &tel_sc[i][FUNCDIAL];
else
tel_sc[i][j].dialer = NULL;
#if defined(__FreeBSD__)
#if __FreeBSD__ == 3
#ifdef DEVFS
/* XXX */ tel_sc[i][j].devfs_token
= devfs_add_devswf(&i4btel_cdevsw, i, DV_CHR,
UID_ROOT, GID_WHEEL, 0600,
"i4btel%d", i);
#endif
#else
switch(j)
{
case FUNCTEL: /* normal i4btel device */
make_dev(&i4btel_cdevsw, i,
UID_ROOT, GID_WHEEL,
0600, "i4btel%d", i);
break;
case FUNCDIAL: /* i4bteld dialout device */
make_dev(&i4btel_cdevsw, i+(1<<UNITBITS),
UID_ROOT, GID_WHEEL,
0600, "i4bteld%d", i);
break;
}
#endif
#endif
}
}
}
/*---------------------------------------------------------------------------*
* open tel device
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdntelopen(dev_t dev, int flag, int fmt,
struct lwp *l)
{
int unit = UNIT(dev);
int func = FUNC(dev);
tel_sc_t *sc;
if(unit >= NISDNTEL)
return(ENXIO);
sc = &tel_sc[unit][func];
if(sc->devstate & ST_ISOPEN)
return(EBUSY);
sc->devstate |= ST_ISOPEN;
if(func == FUNCDIAL)
{
sc->result = 0;
}
return(0);
}
/*---------------------------------------------------------------------------*
* close tel device
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdntelclose(dev_t dev, int flag, int fmt,
struct lwp *l)
{
int unit = UNIT(dev);
int func = FUNC(dev);
tel_sc_t *sc;
int error = 0;
int x;
if(unit > NISDNTEL)
return(ENXIO);
sc = &tel_sc[unit][func];
x = splnet();
sc->devstate &= ~ST_TONE;
if((func == FUNCTEL) &&
(sc->isdn_linktab != NULL && sc->isdn_linktab->tx_queue != NULL))
{
while(!(IF_QEMPTY(sc->isdn_linktab->tx_queue)))
{
sc->devstate |= ST_WRWAITEMPTY;
if((error = tsleep((void *) &sc->isdn_linktab->tx_queue,
TTIPRI | PCATCH, "wtcl", 0)) != 0)
{
break;
}
}
sc->devstate &= ~ST_WRWAITEMPTY;
}
sc->devstate &= ~ST_ISOPEN;
splx(x);
wakeup((void *) &sc->tones);
return(error);
}
/*---------------------------------------------------------------------------*
* i4btelioctl - device driver ioctl routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdntelioctl(dev_t dev, u_long cmd, void *data, int flag,
struct lwp *l)
{
int unit = UNIT(dev);
int func = FUNC(dev);
int error = 0;
struct mbuf *m;
int s;
tel_sc_t *sc = &tel_sc[unit][func];
if(func == FUNCTEL)
{
switch(cmd)
{
case I4B_TEL_GETAUDIOFMT:
*(int *)data = sc->audiofmt;
break;
case I4B_TEL_SETAUDIOFMT:
switch (*(int *)data)
{
case CVT_NONE:
sc->rcvttab = 0;
sc->wcvttab = 0;
break;
case CVT_ALAW2ULAW:
/* ISDN: A-law */
/* user: mu-law */
sc->rcvttab = a2u_tab;
sc->wcvttab = u2a_tab;
break;
case CVT_ULAW2ALAW:
/* ISDN: mu-law */
/* user: A-law */
sc->rcvttab = u2a_tab;
sc->wcvttab = a2u_tab;
break;
default:
error = ENODEV;
break;
}
if(error == 0)
sc->audiofmt = *(int *)data;
break;
case I4B_TEL_EMPTYINPUTQUEUE:
s = splnet();
while((sc->devstate & ST_CONNECTED) &&
(sc->devstate & ST_ISOPEN) &&
!IF_QEMPTY(sc->isdn_linktab->rx_queue))
{
IF_DEQUEUE(sc->isdn_linktab->rx_queue, m);
if(m)
i4b_Bfreembuf(m);
}
splx(s);
break;
case I4B_TEL_VR_REQ:
{
msg_vr_req_t *mvr;
mvr = (msg_vr_req_t *)data;
mvr->version = VERSION;
mvr->release = REL;
mvr->step = STEP;
break;
}
case I4B_TEL_TONES:
{
struct i4b_tel_tones *tt;
tt = (struct i4b_tel_tones *)data;
s = splnet();
while ((sc->devstate & ST_TONE) &&
sc->tones.duration[sc->toneidx] != 0) {
if((error = tsleep((void *) &sc->tones,
TTIPRI | PCATCH, "rtone", 0 )) != 0) {
splx(s);
return(error);
}
}
if(!(sc->devstate & ST_ISOPEN)) {
splx(s);
return (EIO);
}
if(!(sc->devstate & ST_CONNECTED)) {
splx(s);
return (EIO);
}
sc->tones = *tt;
sc->toneidx = 0;
sc->tonefreq = tt->frequency[0];
sc->devstate |= ST_TONE;
splx(s);
tel_tone(sc);
break;
}
default:
error = ENOTTY;
break;
}
}
else if(func == FUNCDIAL)
{
switch(cmd)
{
default:
error = ENOTTY;
break;
}
}
return(error);
}
/*---------------------------------------------------------------------------*
* read from tel device
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdntelread(dev_t dev, struct uio *uio, int ioflag)
{
int unit = UNIT(dev);
int func = FUNC(dev);
struct mbuf *m;
int s;
int error = 0;
tel_sc_t *sc = &tel_sc[unit][func];
if(!(sc->devstate & ST_ISOPEN))
return(EIO);
if(func == FUNCTEL)
{
s = splnet();
while((sc->devstate & ST_ISOPEN) &&
(sc->devstate & ST_CONNECTED) &&
IF_QEMPTY(sc->isdn_linktab->rx_queue))
{
sc->devstate |= ST_RDWAITDATA;
NDBGL4(L4_TELDBG, "i4btel%d, queue empty!", unit);
if((error = tsleep((void *) &sc->isdn_linktab->rx_queue,
TTIPRI | PCATCH,
"rtel", 0 )) != 0)
{
sc->devstate &= ~ST_RDWAITDATA;
splx(s);
return(error);
}
}
if(!(sc->devstate & ST_ISOPEN))
{
splx(s);
return(EIO);
}
if(!(sc->devstate & ST_CONNECTED))
{
splx(s);
return(EIO);
}
IF_DEQUEUE(sc->isdn_linktab->rx_queue, m);
if(m && m->m_len > 0)
{
register int i;
for(i = 0; i < m->m_len; i++)
{
/* always reverse bit order from line */
mtod(m,u_char *)[i] = bitreverse[mtod(m,u_char *)[i]];
/* convert if necessary */
if(sc->rcvttab)
mtod(m,u_char *)[i] = sc->rcvttab[mtod(m,u_char *)[i]];
}
error = uiomove(m->m_data, m->m_len, uio);
NDBGL4(L4_TELDBG, "i4btel%d, mbuf (%d bytes), uiomove %d!", unit, m->m_len, error);
}
else
{
NDBGL4(L4_TELDBG, "i4btel%d, empty mbuf from queue!", unit);
error = EIO;
}
if(m)
i4b_Bfreembuf(m);
splx(s);
}
else if(func == FUNCDIAL)
{
s = splnet();
while((sc->result == 0) && (sc->devstate & ST_ISOPEN))
{
sc->devstate |= ST_RDWAITDATA;
if((error = tsleep((void *) &sc->result,
TTIPRI | PCATCH,
"rtel1", 0 )) != 0)
{
sc->devstate &= ~ST_RDWAITDATA;
splx(s);
return(error);
}
}
if(!(sc->devstate & ST_ISOPEN))
{
splx(s);
return(EIO);
}
if(sc->result != 0)
{
error = uiomove(&sc->result, 1, uio);
sc->result = 0;
}
else
{
error = EIO;
}
splx(s);
}
return(error);
}
/*---------------------------------------------------------------------------*
* write to tel device
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdntelwrite(dev_t dev, struct uio * uio, int ioflag)
{
int unit = UNIT(dev);
int func = FUNC(dev);
struct mbuf *m;
int s;
int error = 0;
tel_sc_t *sc = &tel_sc[unit][func];
if(!(sc->devstate & ST_ISOPEN))
{
return(EIO);
}
if(func == FUNCTEL)
{
s = splnet();
if(!(sc->devstate & ST_CONNECTED)) {
splx(s);
return(EIO);
}
sc->devstate &= ~ST_TONE;
while((IF_QFULL(sc->isdn_linktab->tx_queue)) &&
(sc->devstate & ST_ISOPEN))
{
sc->devstate |= ST_WRWAITEMPTY;
if((error = tsleep((void *) &sc->isdn_linktab->tx_queue,
TTIPRI | PCATCH, "wtel", 0)) != 0)
{
sc->devstate &= ~ST_WRWAITEMPTY;
splx(s);
return(error);
}
}
if(!(sc->devstate & ST_ISOPEN))
{
splx(s);
return(EIO);
}
if(!(sc->devstate & ST_CONNECTED))
{
splx(s);
return(EIO);
}
if((m = i4b_Bgetmbuf(BCH_MAX_DATALEN)) != NULL)
{
register int i;
m->m_len = min(BCH_MAX_DATALEN, uio->uio_resid);
error = uiomove(m->m_data, m->m_len, uio);
for(i = 0; i < m->m_len; i++)
{
/* convert if necessary */
if(sc->wcvttab)
mtod(m,u_char *)[i] = sc->wcvttab[mtod(m,u_char *)[i]];
/* always reverse bitorder to line */
mtod(m,u_char *)[i] = bitreverse[mtod(m,u_char *)[i]];
}
if(IF_QFULL(sc->isdn_linktab->tx_queue))
{
m_freem(m);
}
else
{
IF_ENQUEUE(sc->isdn_linktab->tx_queue, m);
}
(*sc->isdn_linktab->bchannel_driver->bch_tx_start)(sc->isdn_linktab->l1token, sc->isdn_linktab->channel);
}
splx(s);
}
else if(func == FUNCDIAL)
{
tel_sc_t *telsc = &tel_sc[unit][FUNCTEL];
#define CMDBUFSIZ 80
char cmdbuf[CMDBUFSIZ];
int len = min(CMDBUFSIZ-1, uio->uio_resid);
error = uiomove(cmdbuf, len, uio);
if(cmdbuf[0] == CMD_DIAL)
{
i4b_l4_dialoutnumber(isdntel_driver_id, unit, len-1, &cmdbuf[1]);
}
else if(cmdbuf[0] == CMD_HUP)
{
if (!(telsc->devstate & ST_CONNECTED))
error = EIO;
else
i4b_l4_drvrdisc(telsc->cdp->cdid);
}
}
else
{
error = EIO;
}
return(error);
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
#define NTONESAMP 32
static void
tel_tone(tel_sc_t *sc)
{
struct mbuf *m;
u_char *p;
int i;
if((m = i4b_Bgetmbuf(NTONESAMP)) == NULL) {
printf("no mbuf in tel_tone\n");
return;
}
p = m->m_data;
m->m_len = 0;
for (i = 0; i < NTONESAMP && (sc->devstate & ST_TONE); i++) {
if (sc->tones.duration[sc->toneidx] > 0) {
if (--sc->tones.duration[sc->toneidx] == 0) {
sc->toneidx++;
if (sc->toneidx == I4B_TEL_MAXTONES) {
sc->devstate &= ~ST_TONE;
sc->toneomega = 0;
sc->tonefreq = 0;
} else if (sc->tones.frequency[sc->toneidx] == 0 &&
sc->tones.duration[sc->toneidx] == 0) {
sc->devstate &= ~ST_TONE;
sc->toneomega = 0;
sc->tonefreq = 0;
} else {
sc->tonefreq = sc->tones.frequency[sc->toneidx];
}
if (sc->tones.duration[sc->toneidx] == 0) {
wakeup((void *) &sc->tones);
}
}
}
sc->toneomega += sc->tonefreq;
if (sc->toneomega >= 8000)
sc->toneomega -= 8000;
*p++ = bitreverse[sinetab[sc->toneomega]];
m->m_len++;
}
IF_ENQUEUE(sc->isdn_linktab->tx_queue, m);
(*sc->isdn_linktab->bchannel_driver->bch_tx_start)(sc->isdn_linktab->l1token, sc->isdn_linktab->channel);
}
#ifdef OS_USES_POLL
/*---------------------------------------------------------------------------*
* device driver poll
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdntelpoll(dev_t dev, int events, struct lwp *l)
{
int revents = 0; /* Events we found */
int s;
int unit = UNIT(dev);
int func = FUNC(dev);
tel_sc_t *sc = &tel_sc[unit][func];
s = splhigh();
if(!(sc->devstate & ST_ISOPEN))
{
NDBGL4(L4_TELDBG, "i4btel%d, !ST_ISOPEN", unit);
splx(s);
return(0);
}
if(func == FUNCTEL)
{
/*
* Writes are OK if we are connected and the
* transmit queue can take them
*/
if((events & (POLLOUT|POLLWRNORM)) &&
(sc->devstate & ST_CONNECTED) &&
(sc->isdn_linktab != NULL) &&
(!IF_QFULL(sc->isdn_linktab->tx_queue)))
{
NDBGL4(L4_TELDBG, "i4btel%d, POLLOUT", unit);
revents |= (events & (POLLOUT|POLLWRNORM));
}
/* ... while reads are OK if we have any data */
if((events & (POLLIN|POLLRDNORM)) &&
(sc->devstate & ST_CONNECTED) &&
(sc->isdn_linktab != NULL) &&
(!IF_QEMPTY(sc->isdn_linktab->rx_queue)))
{
NDBGL4(L4_TELDBG, "i4btel%d, POLLIN", unit);
revents |= (events & (POLLIN|POLLRDNORM));
}
if(revents == 0)
{
NDBGL4(L4_TELDBG, "i4btel%d, selrecord", unit);
selrecord(l, &sc->selp);
}
}
else if(func == FUNCDIAL)
{
if(events & (POLLOUT|POLLWRNORM))
{
NDBGL4(L4_TELDBG, "i4bteld%d, POLLOUT", unit);
revents |= (events & (POLLOUT|POLLWRNORM));
}
if(events & (POLLIN|POLLRDNORM))
{
NDBGL4(L4_TELDBG, "i4bteld%d, POLLIN, result = %d", unit, sc->result);
if(sc->result != 0)
revents |= (events & (POLLIN|POLLRDNORM));
}
if(revents == 0)
{
NDBGL4(L4_TELDBG, "i4bteld%d, selrecord", unit);
selrecord(l, &sc->selp);
}
}
splx(s);
return(revents);
}
static void
filt_i4btel_detach(struct knote *kn)
{
tel_sc_t *sc = kn->kn_hook;
int s;
s = splhigh();
SLIST_REMOVE(&sc->selp.sel_klist, kn, knote, kn_selnext);
splx(s);
}
static int
filt_i4btel_telread(struct knote *kn, long hint)
{
tel_sc_t *sc = kn->kn_hook;
if ((sc->devstate & ST_CONNECTED) == 0)
return (0);
if (sc->isdn_linktab == NULL)
return (0);
if (IF_QEMPTY(sc->isdn_linktab->rx_queue))
return (0);
kn->kn_data = 0; /* XXXLUKEM (thorpej): what to put here? */
return (1);
}
static const struct filterops i4btel_telread_filtops =
{ 1, NULL, filt_i4btel_detach, filt_i4btel_telread };
static int
filt_i4btel_telwrite(struct knote *kn, long hint)
{
tel_sc_t *sc = kn->kn_hook;
if ((sc->devstate & ST_CONNECTED) == 0)
return (0);
if (sc->isdn_linktab == NULL)
return (0);
if (IF_QFULL(sc->isdn_linktab->tx_queue))
return (0);
kn->kn_data = 0; /* XXXLUKEM (thorpej): what to put here? */
return (1);
}
static const struct filterops i4btel_telwrite_filtops =
{ 1, NULL, filt_i4btel_detach, filt_i4btel_telwrite };
static int
filt_i4btel_dialread(struct knote *kn, long hint)