826 lines
21 KiB
C
826 lines
21 KiB
C
/*
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* Copyright (c) 1997, 2002 Hellmuth Michaelis. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_rbch.c - device driver for raw B channel data
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* ---------------------------------------------------
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* last edit-date: [Sun Mar 17 09:51:03 2002]
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*
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*---------------------------------------------------------------------------*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "i4brbch.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/uio.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/filio.h>
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#include <sys/tty.h>
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#include <net/if.h>
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#include <machine/i4b_ioctl.h>
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#include <machine/i4b_rbch_ioctl.h>
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#include <machine/i4b_debug.h>
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#include <i4b/include/i4b_global.h>
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#include <i4b/include/i4b_mbuf.h>
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#include <i4b/include/i4b_l3l4.h>
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#include <i4b/layer4/i4b_l4.h>
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#include <sys/ioccom.h>
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#include <sys/poll.h>
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static drvr_link_t rbch_drvr_linktab[NI4BRBCH];
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static isdn_link_t *isdn_linktab[NI4BRBCH];
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#define I4BRBCHACCT 1 /* enable accounting messages */
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#define I4BRBCHACCTINTVL 2 /* accounting msg interval in secs */
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static struct rbch_softc {
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int sc_unit; /* unit number */
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int sc_devstate; /* state of driver */
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#define ST_IDLE 0x00
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#define ST_CONNECTED 0x01
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#define ST_ISOPEN 0x02
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#define ST_RDWAITDATA 0x04
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#define ST_WRWAITEMPTY 0x08
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#define ST_NOBLOCK 0x10
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int sc_bprot; /* B-ch protocol used */
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call_desc_t *sc_cd; /* Call Descriptor */
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struct termios it_in;
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struct ifqueue sc_hdlcq; /* hdlc read queue */
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#define I4BRBCHMAXQLEN 10
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struct selinfo selp; /* select / poll */
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#if I4BRBCHACCT
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struct callout_handle sc_callout;
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int sc_iinb; /* isdn driver # of inbytes */
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int sc_ioutb; /* isdn driver # of outbytes */
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int sc_linb; /* last # of bytes rx'd */
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int sc_loutb; /* last # of bytes tx'd */
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int sc_fn; /* flag, first null acct */
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#endif
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} rbch_softc[NI4BRBCH];
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static void rbch_rx_data_rdy(int unit);
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static void rbch_tx_queue_empty(int unit);
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static void rbch_connect(int unit, void *cdp);
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static void rbch_disconnect(int unit, void *cdp);
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static void rbch_init_linktab(int unit);
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static void rbch_clrq(int unit);
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static d_open_t i4brbchopen;
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static d_close_t i4brbchclose;
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static d_read_t i4brbchread;
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static d_read_t i4brbchwrite;
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static d_ioctl_t i4brbchioctl;
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static d_poll_t i4brbchpoll;
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#define CDEV_MAJOR 57
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static struct cdevsw i4brbch_cdevsw = {
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.d_open = i4brbchopen,
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.d_close = i4brbchclose,
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.d_read = i4brbchread,
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.d_write = i4brbchwrite,
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.d_ioctl = i4brbchioctl,
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.d_poll = i4brbchpoll,
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.d_name = "i4brbch",
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.d_maj = CDEV_MAJOR,
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};
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static void i4brbchattach(void *);
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PSEUDO_SET(i4brbchattach, i4b_rbch);
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/*===========================================================================*
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* DEVICE DRIVER ROUTINES
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*===========================================================================*/
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/*---------------------------------------------------------------------------*
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* interface attach routine
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*---------------------------------------------------------------------------*/
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static void
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i4brbchattach(void *dummy)
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{
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int i;
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printf("i4brbch: %d raw B channel access device(s) attached\n", NI4BRBCH);
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for(i=0; i < NI4BRBCH; i++)
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{
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make_dev(&i4brbch_cdevsw, i,
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UID_ROOT, GID_WHEEL, 0600, "i4brbch%d", i);
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#if I4BRBCHACCT
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callout_handle_init(&rbch_softc[i].sc_callout);
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rbch_softc[i].sc_fn = 1;
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#endif
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rbch_softc[i].sc_unit = i;
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rbch_softc[i].sc_devstate = ST_IDLE;
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rbch_softc[i].sc_hdlcq.ifq_maxlen = I4BRBCHMAXQLEN;
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if(!mtx_initialized(&rbch_softc[i].sc_hdlcq.ifq_mtx))
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mtx_init(&rbch_softc[i].sc_hdlcq.ifq_mtx, "i4b_rbch", NULL, MTX_DEF);
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rbch_softc[i].it_in.c_ispeed = rbch_softc[i].it_in.c_ospeed = 64000;
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termioschars(&rbch_softc[i].it_in);
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rbch_init_linktab(i);
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}
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}
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/*---------------------------------------------------------------------------*
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* open rbch device
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*---------------------------------------------------------------------------*/
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static int
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i4brbchopen(dev_t dev, int flag, int fmt, struct thread *td)
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{
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int unit = minor(dev);
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if(unit >= NI4BRBCH)
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return(ENXIO);
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if(rbch_softc[unit].sc_devstate & ST_ISOPEN)
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return(EBUSY);
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#if 0
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rbch_clrq(unit);
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#endif
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rbch_softc[unit].sc_devstate |= ST_ISOPEN;
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NDBGL4(L4_RBCHDBG, "unit %d, open", unit);
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return(0);
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}
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/*---------------------------------------------------------------------------*
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* close rbch device
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*---------------------------------------------------------------------------*/
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static int
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i4brbchclose(dev_t dev, int flag, int fmt, struct thread *td)
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{
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int unit = minor(dev);
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struct rbch_softc *sc = &rbch_softc[unit];
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if(sc->sc_devstate & ST_CONNECTED)
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i4b_l4_drvrdisc(BDRV_RBCH, unit);
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sc->sc_devstate &= ~ST_ISOPEN;
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rbch_clrq(unit);
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NDBGL4(L4_RBCHDBG, "unit %d, closed", unit);
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return(0);
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}
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/*---------------------------------------------------------------------------*
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* read from rbch device
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*---------------------------------------------------------------------------*/
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static int
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i4brbchread(dev_t dev, struct uio *uio, int ioflag)
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{
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struct mbuf *m;
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int error = 0;
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int unit = minor(dev);
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struct ifqueue *iqp;
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struct rbch_softc *sc = &rbch_softc[unit];
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CRIT_VAR;
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NDBGL4(L4_RBCHDBG, "unit %d, enter read", unit);
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CRIT_BEG;
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if(!(sc->sc_devstate & ST_ISOPEN))
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{
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CRIT_END;
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NDBGL4(L4_RBCHDBG, "unit %d, read while not open", unit);
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return(EIO);
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}
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if((sc->sc_devstate & ST_NOBLOCK))
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{
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if(!(sc->sc_devstate & ST_CONNECTED)) {
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CRIT_END;
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return(EWOULDBLOCK);
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}
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if(sc->sc_bprot == BPROT_RHDLC)
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iqp = &sc->sc_hdlcq;
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else
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iqp = isdn_linktab[unit]->rx_queue;
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if(IF_QEMPTY(iqp) && (sc->sc_devstate & ST_ISOPEN)) {
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CRIT_END;
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return(EWOULDBLOCK);
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}
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}
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else
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{
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while(!(sc->sc_devstate & ST_CONNECTED))
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{
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NDBGL4(L4_RBCHDBG, "unit %d, wait read init", unit);
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if((error = tsleep( &rbch_softc[unit],
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I4BPRI | PCATCH,
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"rrrbch", 0 )) != 0)
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{
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CRIT_END;
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NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep", unit, error);
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return(error);
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}
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}
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if(sc->sc_bprot == BPROT_RHDLC)
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iqp = &sc->sc_hdlcq;
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else
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iqp = isdn_linktab[unit]->rx_queue;
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while(IF_QEMPTY(iqp) && (sc->sc_devstate & ST_ISOPEN))
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{
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sc->sc_devstate |= ST_RDWAITDATA;
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NDBGL4(L4_RBCHDBG, "unit %d, wait read data", unit);
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if((error = tsleep( &isdn_linktab[unit]->rx_queue,
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I4BPRI | PCATCH,
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"rrbch", 0 )) != 0)
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{
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CRIT_END;
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NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep read", unit, error);
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sc->sc_devstate &= ~ST_RDWAITDATA;
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return(error);
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}
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}
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}
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IF_DEQUEUE(iqp, m);
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NDBGL4(L4_RBCHDBG, "unit %d, read %d bytes", unit, m->m_len);
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if(m && m->m_len)
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{
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error = uiomove(m->m_data, m->m_len, uio);
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}
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else
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{
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NDBGL4(L4_RBCHDBG, "unit %d, error %d uiomove", unit, error);
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error = EIO;
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}
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if(m)
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i4b_Bfreembuf(m);
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CRIT_END;
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return(error);
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}
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/*---------------------------------------------------------------------------*
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* write to rbch device
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*---------------------------------------------------------------------------*/
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static int
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i4brbchwrite(dev_t dev, struct uio * uio, int ioflag)
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{
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struct mbuf *m;
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int error = 0;
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int unit = minor(dev);
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struct rbch_softc *sc = &rbch_softc[unit];
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CRIT_VAR;
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NDBGL4(L4_RBCHDBG, "unit %d, write", unit);
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CRIT_BEG;
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if(!(sc->sc_devstate & ST_ISOPEN))
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{
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NDBGL4(L4_RBCHDBG, "unit %d, write while not open", unit);
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CRIT_END;
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return(EIO);
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}
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if((sc->sc_devstate & ST_NOBLOCK))
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{
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if(!(sc->sc_devstate & ST_CONNECTED)) {
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CRIT_END;
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return(EWOULDBLOCK);
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}
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if(_IF_QFULL(isdn_linktab[unit]->tx_queue) && (sc->sc_devstate & ST_ISOPEN)) {
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CRIT_END;
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return(EWOULDBLOCK);
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}
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}
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else
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{
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while(!(sc->sc_devstate & ST_CONNECTED))
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{
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NDBGL4(L4_RBCHDBG, "unit %d, write wait init", unit);
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error = tsleep( &rbch_softc[unit],
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I4BPRI | PCATCH,
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"wrrbch", 0 );
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if(error == ERESTART) {
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CRIT_END;
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return (ERESTART);
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}
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else if(error == EINTR)
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{
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CRIT_END;
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NDBGL4(L4_RBCHDBG, "unit %d, EINTR during wait init", unit);
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return(EINTR);
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}
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else if(error)
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{
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CRIT_END;
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NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep init", unit, error);
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return(error);
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}
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tsleep( &rbch_softc[unit], I4BPRI | PCATCH, "xrbch", (hz*1));
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}
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while(_IF_QFULL(isdn_linktab[unit]->tx_queue) && (sc->sc_devstate & ST_ISOPEN))
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{
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sc->sc_devstate |= ST_WRWAITEMPTY;
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NDBGL4(L4_RBCHDBG, "unit %d, write queue full", unit);
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if ((error = tsleep( &isdn_linktab[unit]->tx_queue,
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I4BPRI | PCATCH,
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"wrbch", 0)) != 0) {
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sc->sc_devstate &= ~ST_WRWAITEMPTY;
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if(error == ERESTART)
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{
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CRIT_END;
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return(ERESTART);
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}
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else if(error == EINTR)
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{
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CRIT_END;
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NDBGL4(L4_RBCHDBG, "unit %d, EINTR during wait write", unit);
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return(error);
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}
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else if(error)
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{
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CRIT_END;
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NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep write", unit, error);
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return(error);
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}
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}
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}
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}
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if(!(sc->sc_devstate & ST_ISOPEN))
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{
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NDBGL4(L4_RBCHDBG, "unit %d, not open anymore", unit);
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CRIT_END;
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return(EIO);
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}
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if((m = i4b_Bgetmbuf(BCH_MAX_DATALEN)) != NULL)
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{
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m->m_len = min(BCH_MAX_DATALEN, uio->uio_resid);
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NDBGL4(L4_RBCHDBG, "unit %d, write %d bytes", unit, m->m_len);
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error = uiomove(m->m_data, m->m_len, uio);
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(void) IF_HANDOFF(isdn_linktab[unit]->tx_queue, m, NULL);
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(*isdn_linktab[unit]->bch_tx_start)(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel);
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}
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CRIT_END;
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return(error);
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}
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/*---------------------------------------------------------------------------*
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* rbch device ioctl handlibg
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*---------------------------------------------------------------------------*/
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static int
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i4brbchioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
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{
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int error = 0;
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int unit = minor(dev);
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struct rbch_softc *sc = &rbch_softc[unit];
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switch(cmd)
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{
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case FIOASYNC: /* Set async mode */
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if (*(int *)data)
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{
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NDBGL4(L4_RBCHDBG, "unit %d, setting async mode", unit);
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}
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else
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{
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NDBGL4(L4_RBCHDBG, "unit %d, clearing async mode", unit);
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}
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break;
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case FIONBIO:
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if (*(int *)data)
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{
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NDBGL4(L4_RBCHDBG, "unit %d, setting non-blocking mode", unit);
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sc->sc_devstate |= ST_NOBLOCK;
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}
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else
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{
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NDBGL4(L4_RBCHDBG, "unit %d, clearing non-blocking mode", unit);
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sc->sc_devstate &= ~ST_NOBLOCK;
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}
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break;
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case TIOCCDTR: /* Clear DTR */
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if(sc->sc_devstate & ST_CONNECTED)
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{
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NDBGL4(L4_RBCHDBG, "unit %d, disconnecting for DTR down", unit);
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i4b_l4_drvrdisc(BDRV_RBCH, unit);
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}
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break;
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case I4B_RBCH_DIALOUT:
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{
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size_t l;
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for (l = 0; l < TELNO_MAX && ((char *)data)[l]; l++)
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;
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if (l)
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{
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NDBGL4(L4_RBCHDBG, "unit %d, attempting dialout to %s", unit, (char *)data);
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i4b_l4_dialoutnumber(BDRV_RBCH, unit, l, (char *)data);
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break;
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}
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/* FALLTHROUGH to SDTR */
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}
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case TIOCSDTR: /* Set DTR */
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NDBGL4(L4_RBCHDBG, "unit %d, attempting dialout (DTR)", unit);
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i4b_l4_dialout(BDRV_RBCH, unit);
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break;
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case TIOCSETA: /* Set termios struct */
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break;
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case TIOCGETA: /* Get termios struct */
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*(struct termios *)data = sc->it_in;
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break;
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case TIOCMGET:
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*(int *)data = TIOCM_LE|TIOCM_DTR|TIOCM_RTS|TIOCM_CTS|TIOCM_DSR;
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if (sc->sc_devstate & ST_CONNECTED)
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*(int *)data |= TIOCM_CD;
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break;
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case I4B_RBCH_VR_REQ:
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{
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msg_vr_req_t *mvr;
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mvr = (msg_vr_req_t *)data;
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|
|
|
mvr->version = VERSION;
|
|
mvr->release = REL;
|
|
mvr->step = STEP;
|
|
break;
|
|
}
|
|
|
|
default: /* Unknown stuff */
|
|
NDBGL4(L4_RBCHDBG, "unit %d, ioctl, unknown cmd %lx", unit, (u_long)cmd);
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* device driver poll
|
|
*---------------------------------------------------------------------------*/
|
|
static int
|
|
i4brbchpoll(dev_t dev, int events, struct thread *td)
|
|
{
|
|
int revents = 0; /* Events we found */
|
|
int s;
|
|
int unit = minor(dev);
|
|
struct rbch_softc *sc = &rbch_softc[unit];
|
|
|
|
/* We can't check for anything but IN or OUT */
|
|
|
|
s = splhigh();
|
|
|
|
if(!(sc->sc_devstate & ST_ISOPEN))
|
|
{
|
|
splx(s);
|
|
return(POLLNVAL);
|
|
}
|
|
|
|
/*
|
|
* Writes are OK if we are connected and the
|
|
* transmit queue can take them
|
|
*/
|
|
|
|
if((events & (POLLOUT|POLLWRNORM)) &&
|
|
(sc->sc_devstate & ST_CONNECTED) &&
|
|
!_IF_QFULL(isdn_linktab[unit]->tx_queue))
|
|
{
|
|
revents |= (events & (POLLOUT|POLLWRNORM));
|
|
}
|
|
|
|
/* ... while reads are OK if we have any data */
|
|
|
|
if((events & (POLLIN|POLLRDNORM)) &&
|
|
(sc->sc_devstate & ST_CONNECTED))
|
|
{
|
|
struct ifqueue *iqp;
|
|
|
|
if(sc->sc_bprot == BPROT_RHDLC)
|
|
iqp = &sc->sc_hdlcq;
|
|
else
|
|
iqp = isdn_linktab[unit]->rx_queue;
|
|
|
|
if(!IF_QEMPTY(iqp))
|
|
revents |= (events & (POLLIN|POLLRDNORM));
|
|
}
|
|
|
|
if(revents == 0)
|
|
selrecord(td, &sc->selp);
|
|
|
|
splx(s);
|
|
return(revents);
|
|
}
|
|
|
|
#if I4BRBCHACCT
|
|
/*---------------------------------------------------------------------------*
|
|
* watchdog routine
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_timeout(struct rbch_softc *sc)
|
|
{
|
|
bchan_statistics_t bs;
|
|
int unit = sc->sc_unit;
|
|
|
|
/* get # of bytes in and out from the HSCX driver */
|
|
|
|
(*isdn_linktab[unit]->bch_stat)
|
|
(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel, &bs);
|
|
|
|
sc->sc_ioutb += bs.outbytes;
|
|
sc->sc_iinb += bs.inbytes;
|
|
|
|
if((sc->sc_iinb != sc->sc_linb) || (sc->sc_ioutb != sc->sc_loutb) || sc->sc_fn)
|
|
{
|
|
int ri = (sc->sc_iinb - sc->sc_linb)/I4BRBCHACCTINTVL;
|
|
int ro = (sc->sc_ioutb - sc->sc_loutb)/I4BRBCHACCTINTVL;
|
|
|
|
if((sc->sc_iinb == sc->sc_linb) && (sc->sc_ioutb == sc->sc_loutb))
|
|
sc->sc_fn = 0;
|
|
else
|
|
sc->sc_fn = 1;
|
|
|
|
sc->sc_linb = sc->sc_iinb;
|
|
sc->sc_loutb = sc->sc_ioutb;
|
|
|
|
i4b_l4_accounting(BDRV_RBCH, unit, ACCT_DURING,
|
|
sc->sc_ioutb, sc->sc_iinb, ro, ri, sc->sc_ioutb, sc->sc_iinb);
|
|
}
|
|
START_TIMER(sc->sc_callout, rbch_timeout, sc, I4BRBCHACCTINTVL*hz);
|
|
}
|
|
#endif /* I4BRBCHACCT */
|
|
|
|
/*===========================================================================*
|
|
* ISDN INTERFACE ROUTINES
|
|
*===========================================================================*/
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* this routine is called from L4 handler at connect time
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_connect(int unit, void *cdp)
|
|
{
|
|
call_desc_t *cd = (call_desc_t *)cdp;
|
|
struct rbch_softc *sc = &rbch_softc[unit];
|
|
|
|
sc->sc_bprot = cd->bprot;
|
|
|
|
#if I4BRBCHACCT
|
|
if(sc->sc_bprot == BPROT_RHDLC)
|
|
{
|
|
sc->sc_iinb = 0;
|
|
sc->sc_ioutb = 0;
|
|
sc->sc_linb = 0;
|
|
sc->sc_loutb = 0;
|
|
|
|
START_TIMER(sc->sc_callout, rbch_timeout, sc, I4BRBCHACCTINTVL*hz);
|
|
}
|
|
#endif
|
|
if(!(sc->sc_devstate & ST_CONNECTED))
|
|
{
|
|
NDBGL4(L4_RBCHDBG, "unit %d, wakeup", unit);
|
|
sc->sc_devstate |= ST_CONNECTED;
|
|
sc->sc_cd = cdp;
|
|
wakeup(sc);
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* this routine is called from L4 handler at disconnect time
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_disconnect(int unit, void *cdp)
|
|
{
|
|
call_desc_t *cd = (call_desc_t *)cdp;
|
|
struct rbch_softc *sc = &rbch_softc[unit];
|
|
|
|
CRIT_VAR;
|
|
|
|
if(cd != sc->sc_cd)
|
|
{
|
|
NDBGL4(L4_RBCHDBG, "rbch%d: channel %d not active",
|
|
cd->driver_unit, cd->channelid);
|
|
return;
|
|
}
|
|
|
|
CRIT_BEG;
|
|
|
|
NDBGL4(L4_RBCHDBG, "unit %d, disconnect", unit);
|
|
|
|
sc->sc_devstate &= ~ST_CONNECTED;
|
|
|
|
sc->sc_cd = NULL;
|
|
|
|
#if I4BRBCHACCT
|
|
i4b_l4_accounting(BDRV_RBCH, unit, ACCT_FINAL,
|
|
sc->sc_ioutb, sc->sc_iinb, 0, 0, sc->sc_ioutb, sc->sc_iinb);
|
|
|
|
STOP_TIMER(sc->sc_callout, rbch_timeout, sc);
|
|
#endif
|
|
CRIT_END;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* feedback from daemon in case of dial problems
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_dialresponse(int unit, int status, cause_t cause)
|
|
{
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* interface up/down
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_updown(int unit, int updown)
|
|
{
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* this routine is called from the HSCX interrupt handler
|
|
* when a new frame (mbuf) has been received and is to be put on
|
|
* the rx queue.
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_rx_data_rdy(int unit)
|
|
{
|
|
if(rbch_softc[unit].sc_bprot == BPROT_RHDLC)
|
|
{
|
|
register struct mbuf *m;
|
|
|
|
if((m = *isdn_linktab[unit]->rx_mbuf) == NULL)
|
|
return;
|
|
|
|
m->m_pkthdr.len = m->m_len;
|
|
|
|
if (! IF_HANDOFF(&(rbch_softc[unit].sc_hdlcq), m, NULL))
|
|
{
|
|
NDBGL4(L4_RBCHDBG, "unit %d: hdlc rx queue full!", unit);
|
|
}
|
|
}
|
|
|
|
if(rbch_softc[unit].sc_devstate & ST_RDWAITDATA)
|
|
{
|
|
NDBGL4(L4_RBCHDBG, "unit %d, wakeup", unit);
|
|
rbch_softc[unit].sc_devstate &= ~ST_RDWAITDATA;
|
|
wakeup( &isdn_linktab[unit]->rx_queue);
|
|
}
|
|
else
|
|
{
|
|
NDBGL4(L4_RBCHDBG, "unit %d, NO wakeup", unit);
|
|
}
|
|
selwakeuppri(&rbch_softc[unit].selp, I4BPRI);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* this routine is called from the HSCX interrupt handler
|
|
* when the last frame has been sent out and there is no
|
|
* further frame (mbuf) in the tx queue.
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_tx_queue_empty(int unit)
|
|
{
|
|
if(rbch_softc[unit].sc_devstate & ST_WRWAITEMPTY)
|
|
{
|
|
NDBGL4(L4_RBCHDBG, "unit %d, wakeup", unit);
|
|
rbch_softc[unit].sc_devstate &= ~ST_WRWAITEMPTY;
|
|
wakeup( &isdn_linktab[unit]->tx_queue);
|
|
}
|
|
else
|
|
{
|
|
NDBGL4(L4_RBCHDBG, "unit %d, NO wakeup", unit);
|
|
}
|
|
selwakeuppri(&rbch_softc[unit].selp, TTOPRI);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* this routine is called from the HSCX interrupt handler
|
|
* each time a packet is received or transmitted
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_activity(int unit, int rxtx)
|
|
{
|
|
if (rbch_softc[unit].sc_cd)
|
|
rbch_softc[unit].sc_cd->last_active_time = SECOND;
|
|
selwakeuppri(&rbch_softc[unit].selp, I4BPRI);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* clear an hdlc rx queue for a rbch unit
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_clrq(int unit)
|
|
{
|
|
CRIT_VAR;
|
|
|
|
CRIT_BEG;
|
|
IF_DRAIN(&rbch_softc[unit].sc_hdlcq);
|
|
CRIT_END;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* return this drivers linktab address
|
|
*---------------------------------------------------------------------------*/
|
|
drvr_link_t *
|
|
rbch_ret_linktab(int unit)
|
|
{
|
|
rbch_init_linktab(unit);
|
|
return(&rbch_drvr_linktab[unit]);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* setup the isdn_linktab for this driver
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
rbch_set_linktab(int unit, isdn_link_t *ilt)
|
|
{
|
|
isdn_linktab[unit] = ilt;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* initialize this drivers linktab
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_init_linktab(int unit)
|
|
{
|
|
rbch_drvr_linktab[unit].unit = unit;
|
|
rbch_drvr_linktab[unit].bch_rx_data_ready = rbch_rx_data_rdy;
|
|
rbch_drvr_linktab[unit].bch_tx_queue_empty = rbch_tx_queue_empty;
|
|
rbch_drvr_linktab[unit].bch_activity = rbch_activity;
|
|
rbch_drvr_linktab[unit].line_connected = rbch_connect;
|
|
rbch_drvr_linktab[unit].line_disconnected = rbch_disconnect;
|
|
rbch_drvr_linktab[unit].dial_response = rbch_dialresponse;
|
|
rbch_drvr_linktab[unit].updown_ind = rbch_updown;
|
|
}
|
|
|
|
/*===========================================================================*/
|