914 lines
24 KiB
C
914 lines
24 KiB
C
/*
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* Copyright (c) 1997, 1999 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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*
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* $FreeBSD$
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*
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* last edit-date: [Fri Jul 9 09:37:02 1999]
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*
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*---------------------------------------------------------------------------*/
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#include "i4brbch.h"
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#if NI4BRBCH > 0
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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 <net/if.h>
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#include <sys/proc.h>
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#include <sys/tty.h>
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#if defined (__NetBSD__) || defined (__OpenBSD__)
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extern cc_t ttydefchars;
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#define termioschars(t) memcpy((t)->c_cc, &ttydefchars, sizeof((t)->c_cc))
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#endif
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#ifdef __NetBSD__
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#include <sys/filio.h>
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#define bootverbose 0
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#endif
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#ifdef __FreeBSD__
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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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#else
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#include <i4b/i4b_ioctl.h>
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#include <i4b/i4b_rbch_ioctl.h>
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#include <i4b/i4b_debug.h>
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#endif
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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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/* initialized by L4 */
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#ifdef __bsdi__
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#include <sys/device.h>
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/* XXX FIXME */
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int bootverbose = 0;
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#endif
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#ifdef OS_USES_POLL
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#include <sys/ioccom.h>
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#include <sys/poll.h>
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#else
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#include <sys/fcntl.h>
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#include <sys/ioctl.h>
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#endif
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#if (defined(__FreeBSD_version) && __FreeBSD_version >= 300001)
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#include <sys/filio.h>
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#endif
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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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static struct rbch_softc {
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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 *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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} 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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#ifndef __FreeBSD__
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#define PDEVSTATIC /* - not static - */
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#define IOCTL_CMD_T u_long
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void i4brbchattach __P((void));
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int i4brbchopen __P((dev_t dev, int flag, int fmt, struct proc *p));
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int i4brbchclose __P((dev_t dev, int flag, int fmt, struct proc *p));
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int i4brbchread __P((dev_t dev, struct uio *uio, int ioflag));
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int i4brbchwrite __P((dev_t dev, struct uio *uio, int ioflag));
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int i4brbchioctl __P((dev_t dev, IOCTL_CMD_T cmd, caddr_t arg, int flag, struct proc* pr));
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#ifdef OS_USES_POLL
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int i4brbchpoll __P((dev_t dev, int events, struct proc *p));
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#else
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PDEVSTATIC int i4brbchselect __P((dev_t dev, int rw, struct proc *p));
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#endif
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#endif
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#if BSD > 199306 && defined(__FreeBSD__)
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#define PDEVSTATIC static
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#if !defined(__FreeBSD_version) || __FreeBSD_version < 300003
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#define IOCTL_CMD_T int
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#else
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#define IOCTL_CMD_T u_long
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#endif
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PDEVSTATIC d_open_t i4brbchopen;
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PDEVSTATIC d_close_t i4brbchclose;
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PDEVSTATIC d_read_t i4brbchread;
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PDEVSTATIC d_read_t i4brbchwrite;
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PDEVSTATIC d_ioctl_t i4brbchioctl;
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#ifdef OS_USES_POLL
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PDEVSTATIC d_poll_t i4brbchpoll;
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#define POLLFIELD i4brbchpoll
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#else
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PDEVSTATIC d_select_t i4brbchselect;
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#define POLLFIELD i4brbchselect
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#endif
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#define CDEV_MAJOR 57
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#if defined (__FreeBSD_version) && __FreeBSD_version >= 400006
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static struct cdevsw i4brbch_cdevsw = {
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/* open */ i4brbchopen,
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/* close */ i4brbchclose,
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/* read */ i4brbchread,
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/* write */ i4brbchwrite,
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/* ioctl */ i4brbchioctl,
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/* poll */ POLLFIELD,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ "i4brbch",
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/* maj */ CDEV_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ 0,
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/* bmaj */ -1
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};
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#else
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static struct cdevsw i4brbch_cdevsw = {
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i4brbchopen, i4brbchclose, i4brbchread, i4brbchwrite,
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i4brbchioctl, nostop, noreset, nodevtotty,
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POLLFIELD, nommap, NULL, "i4brbch", NULL, -1
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};
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#endif
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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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* initialization at kernel load time
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*---------------------------------------------------------------------------*/
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static void
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i4brbchinit(void *unused)
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{
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#if defined (__FreeBSD_version) && __FreeBSD_version >= 400006
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cdevsw_add(&i4brbch_cdevsw);
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#else
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dev_t dev = makedev(CDEV_MAJOR, 0);
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cdevsw_add(&dev, &i4brbch_cdevsw, NULL);
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#endif
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}
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SYSINIT(i4brbchdev, SI_SUB_DRIVERS,
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SI_ORDER_MIDDLE+CDEV_MAJOR, &i4brbchinit, NULL);
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#endif /* BSD > 199306 && defined(__FreeBSD__) */
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#ifdef __bsdi__
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int i4brbchmatch(struct device *parent, struct cfdata *cf, void *aux);
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void dummy_i4brbchattach(struct device*, struct device *, void *);
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#define CDEV_MAJOR 61
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static struct cfdriver i4brbchcd =
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{ NULL, "i4brbch", i4brbchmatch, dummy_i4brbchattach, DV_DULL,
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sizeof(struct cfdriver) };
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struct devsw i4brbchsw =
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{ &i4brbchcd,
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i4brbchopen, i4brbchclose, i4brbchread, i4brbchwrite,
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i4brbchioctl, seltrue, nommap, nostrat,
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nodump, nopsize, 0, nostop
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};
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int
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i4brbchmatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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printf("i4brbchmatch: aux=0x%x\n", aux);
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return 1;
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}
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void
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dummy_i4brbchattach(struct device *parent, struct device *self, void *aux)
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{
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printf("dummy_i4brbchattach: aux=0x%x\n", aux);
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}
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#endif /* __bsdi__ */
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/*---------------------------------------------------------------------------*
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* interface attach routine
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*---------------------------------------------------------------------------*/
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PDEVSTATIC void
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#ifdef __FreeBSD__
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i4brbchattach(void *dummy)
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#else
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i4brbchattach()
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#endif
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{
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int i;
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#ifndef HACK_NO_PSEUDO_ATTACH_MSG
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printf("i4brbch: %d raw B channel access device(s) attached\n", NI4BRBCH);
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#endif
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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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rbch_softc[i].sc_devstate = ST_IDLE;
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rbch_softc[i].sc_hdlcq.ifq_maxlen = I4BRBCHMAXQLEN;
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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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PDEVSTATIC int
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i4brbchopen(dev_t dev, int flag, int fmt, struct proc *p)
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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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rbch_clrq(unit);
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rbch_softc[unit].sc_devstate |= ST_ISOPEN;
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DBGL4(L4_RBCHDBG, "i4brbchopen", ("unit %d, open\n", 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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PDEVSTATIC int
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i4brbchclose(dev_t dev, int flag, int fmt, struct proc *p)
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{
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int unit = minor(dev);
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if (rbch_softc[unit].cd) {
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i4b_l4_drvrdisc(BDRV_RBCH, unit);
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rbch_softc[unit].cd = NULL;
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}
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rbch_softc[unit].sc_devstate &= ~ST_ISOPEN;
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rbch_clrq(unit);
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DBGL4(L4_RBCHDBG, "i4brbclose", ("unit %d, close\n", 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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PDEVSTATIC 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 s;
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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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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, enter read\n", unit));
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if(!(rbch_softc[unit].sc_devstate & ST_ISOPEN))
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{
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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, read while not open\n", unit));
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return(EIO);
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}
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if((rbch_softc[unit].sc_devstate & ST_NOBLOCK)) {
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if(!(rbch_softc[unit].sc_devstate & ST_CONNECTED))
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return(EWOULDBLOCK);
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if(rbch_softc[unit].sc_bprot == BPROT_RHDLC)
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iqp = &rbch_softc[unit].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) && (rbch_softc[unit].sc_devstate & ST_ISOPEN))
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return(EWOULDBLOCK);
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} else {
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while(!(rbch_softc[unit].sc_devstate & ST_CONNECTED))
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{
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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, wait read init\n", unit));
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if((error = tsleep((caddr_t) &rbch_softc[unit],
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TTIPRI | PCATCH,
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"rrrbch", 0 )) != 0)
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{
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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, error %d tsleep\n", unit, error));
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return(error);
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}
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}
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if(rbch_softc[unit].sc_bprot == BPROT_RHDLC)
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iqp = &rbch_softc[unit].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) && (rbch_softc[unit].sc_devstate & ST_ISOPEN))
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{
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s = splimp();
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rbch_softc[unit].sc_devstate |= ST_RDWAITDATA;
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splx(s);
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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, wait read data\n", unit));
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if((error = tsleep((caddr_t) &isdn_linktab[unit]->rx_queue,
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TTIPRI | PCATCH,
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"rrbch", 0 )) != 0)
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{
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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, error %d tsleep read\n", unit, error));
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rbch_softc[unit].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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s = splimp();
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IF_DEQUEUE(iqp, m);
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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, read %d bytes\n", 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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DBGL4(L4_RBCHDBG, "i4brbchread", ("unit %d, error %d uiomove\n", 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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splx(s);
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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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PDEVSTATIC 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 s;
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int error = 0;
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int unit = minor(dev);
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DBGL4(L4_RBCHDBG, "i4brbchwrite", ("unit %d, write\n", unit));
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if(!(rbch_softc[unit].sc_devstate & ST_ISOPEN))
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{
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DBGL4(L4_RBCHDBG, "i4brbchwrite", ("unit %d, write while not open\n", unit));
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return(EIO);
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}
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if((rbch_softc[unit].sc_devstate & ST_NOBLOCK)) {
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if(!(rbch_softc[unit].sc_devstate & ST_CONNECTED))
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return(EWOULDBLOCK);
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if(IF_QFULL(isdn_linktab[unit]->tx_queue) && (rbch_softc[unit].sc_devstate & ST_ISOPEN))
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return(EWOULDBLOCK);
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} else {
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while(!(rbch_softc[unit].sc_devstate & ST_CONNECTED))
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{
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DBGL4(L4_RBCHDBG, "i4brbchwrite", ("unit %d, write wait init\n", unit));
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error = tsleep((caddr_t) &rbch_softc[unit],
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TTIPRI | PCATCH,
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"wrrbch", 0 );
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if(error == ERESTART)
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return (ERESTART);
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else if(error == EINTR) {
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printf("\n ========= i4brbchwrite, EINTR during wait init ======== \n");
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return(EINTR);
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} else if(error) {
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DBGL4(L4_RBCHDBG, "i4brbchwrite", ("unit %d, error %d tsleep init\n", unit, error));
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return(error);
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}
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/*XXX*/ tsleep((caddr_t) &rbch_softc[unit], TTIPRI | PCATCH, "xrbch", (hz*1));
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}
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while(IF_QFULL(isdn_linktab[unit]->tx_queue) && (rbch_softc[unit].sc_devstate & ST_ISOPEN))
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{
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s = splimp();
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rbch_softc[unit].sc_devstate |= ST_WRWAITEMPTY;
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splx(s);
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DBGL4(L4_RBCHDBG, "i4brbchwrite", ("unit %d, write queue full\n", unit));
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if ((error = tsleep((caddr_t) &isdn_linktab[unit]->tx_queue,
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TTIPRI | PCATCH,
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"wrbch", 0)) != 0) {
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rbch_softc[unit].sc_devstate &= ~ST_WRWAITEMPTY;
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if(error == ERESTART) {
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return(ERESTART);
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} else if(error == EINTR) {
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printf("\n ========= i4brbchwrite, EINTR during wait write ======== \n");
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return(error);
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} else if(error) {
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DBGL4(L4_RBCHDBG, "i4brbchwrite",
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("unit %d, error %d tsleep write\n", unit, error));
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return(error);
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}
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}
|
|
}
|
|
}
|
|
|
|
s = splimp();
|
|
|
|
if(!(rbch_softc[unit].sc_devstate & ST_ISOPEN))
|
|
{
|
|
DBGL4(L4_RBCHDBG, "i4brbchwrite", ("unit %d, not open anymore\n", unit));
|
|
splx(s);
|
|
return(EIO);
|
|
}
|
|
|
|
if((m = i4b_Bgetmbuf(BCH_MAX_DATALEN)) != NULL)
|
|
{
|
|
m->m_len = min(BCH_MAX_DATALEN, uio->uio_resid);
|
|
|
|
DBGL4(L4_RBCHDBG, "i4brbchwrite", ("unit %d, write %d bytes\n", unit, m->m_len));
|
|
|
|
error = uiomove(m->m_data, m->m_len, uio);
|
|
|
|
if(IF_QFULL(isdn_linktab[unit]->tx_queue))
|
|
{
|
|
m_freem(m);
|
|
}
|
|
else
|
|
{
|
|
IF_ENQUEUE(isdn_linktab[unit]->tx_queue, m);
|
|
}
|
|
|
|
(*isdn_linktab[unit]->bch_tx_start)(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel);
|
|
}
|
|
|
|
splx(s);
|
|
|
|
return(error);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* rbch device ioctl handlibg
|
|
*---------------------------------------------------------------------------*/
|
|
PDEVSTATIC int
|
|
i4brbchioctl(dev_t dev, IOCTL_CMD_T cmd, caddr_t data, int flag, struct proc* p)
|
|
{
|
|
int error = 0;
|
|
int unit = minor(dev);
|
|
|
|
switch(cmd)
|
|
{
|
|
case FIOASYNC: /* Set async mode */
|
|
if (*(int *)data)
|
|
{
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, setting async mode\n", unit));
|
|
}
|
|
else
|
|
{
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, clearing async mode\n", unit));
|
|
}
|
|
break;
|
|
|
|
case FIONBIO:
|
|
if (*(int *)data)
|
|
{
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, setting non-blocking mode\n", unit));
|
|
rbch_softc[unit].sc_devstate |= ST_NOBLOCK;
|
|
}
|
|
else
|
|
{
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, clearing non-blocking mode\n", unit));
|
|
rbch_softc[unit].sc_devstate &= ~ST_NOBLOCK;
|
|
}
|
|
break;
|
|
|
|
case TIOCCDTR: /* Clear DTR */
|
|
if(rbch_softc[unit].sc_devstate & ST_CONNECTED)
|
|
{
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, disconnecting for DTR down\n", unit));
|
|
i4b_l4_drvrdisc(BDRV_RBCH, unit);
|
|
}
|
|
break;
|
|
|
|
case I4B_RBCH_DIALOUT:
|
|
{
|
|
size_t l;
|
|
|
|
for (l = 0; l < TELNO_MAX && ((char *)data)[l]; l++)
|
|
;
|
|
if (l)
|
|
{
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, attempting dialout to %s\n", unit, (char *)data));
|
|
i4b_l4_dialoutnumber(BDRV_RBCH, unit, l, (char *)data);
|
|
break;
|
|
}
|
|
/* fall through to SDTR */
|
|
}
|
|
|
|
case TIOCSDTR: /* Set DTR */
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, attempting dialout (DTR)\n", unit));
|
|
i4b_l4_dialout(BDRV_RBCH, unit);
|
|
break;
|
|
|
|
case TIOCSETA: /* Set termios struct */
|
|
break;
|
|
|
|
case TIOCGETA: /* Get termios struct */
|
|
*(struct termios *)data = rbch_softc[unit].it_in;
|
|
break;
|
|
|
|
case TIOCMGET:
|
|
*(int *)data = TIOCM_LE|TIOCM_DTR|TIOCM_RTS|TIOCM_CTS|TIOCM_DSR;
|
|
if (rbch_softc[unit].sc_devstate & ST_CONNECTED)
|
|
*(int *)data |= TIOCM_CD;
|
|
break;
|
|
|
|
case I4B_RBCH_VR_REQ:
|
|
{
|
|
msg_vr_req_t *mvr;
|
|
|
|
mvr = (msg_vr_req_t *)data;
|
|
|
|
mvr->version = VERSION;
|
|
mvr->release = REL;
|
|
mvr->step = STEP;
|
|
break;
|
|
}
|
|
|
|
default: /* Unknown stuff */
|
|
DBGL4(L4_RBCHDBG, "i4brbchioctl", ("unit %d, ioctl, unknown cmd %lx\n", unit, (u_long)cmd));
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
#ifdef OS_USES_POLL
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* device driver poll
|
|
*---------------------------------------------------------------------------*/
|
|
PDEVSTATIC int
|
|
i4brbchpoll(dev_t dev, int events, struct proc *p)
|
|
{
|
|
int revents = 0; /* Events we found */
|
|
int s;
|
|
int unit = minor(dev);
|
|
|
|
/* We can't check for anything but IN or OUT */
|
|
|
|
s = splhigh();
|
|
|
|
if(!(rbch_softc[unit].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)) &&
|
|
(rbch_softc[unit].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)) &&
|
|
(rbch_softc[unit].sc_devstate & ST_CONNECTED))
|
|
{
|
|
struct ifqueue *iqp;
|
|
|
|
if(rbch_softc[unit].sc_bprot == BPROT_RHDLC)
|
|
iqp = &rbch_softc[unit].sc_hdlcq;
|
|
else
|
|
iqp = isdn_linktab[unit]->rx_queue;
|
|
|
|
if(!IF_QEMPTY(iqp))
|
|
revents |= (events & (POLLIN|POLLRDNORM));
|
|
}
|
|
|
|
if(revents == 0)
|
|
selrecord(p, &rbch_softc[unit].selp);
|
|
|
|
splx(s);
|
|
return(revents);
|
|
}
|
|
|
|
#else /* OS_USES_POLL */
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* device driver select
|
|
*---------------------------------------------------------------------------*/
|
|
PDEVSTATIC int
|
|
i4brbchselect(dev_t dev, int rw, struct proc *p)
|
|
{
|
|
int unit = minor(dev);
|
|
int s;
|
|
|
|
s = splhigh();
|
|
|
|
if(!(rbch_softc[unit].sc_devstate & ST_ISOPEN))
|
|
{
|
|
splx(s);
|
|
DBGL4(L4_RBCHDBG, "i4brbchselect", ("unit %d, not open anymore\n", unit));
|
|
return(1);
|
|
}
|
|
|
|
if(rbch_softc[unit].sc_devstate & ST_CONNECTED)
|
|
{
|
|
struct ifqueue *iqp;
|
|
|
|
switch(rw)
|
|
{
|
|
case FREAD:
|
|
if(rbch_softc[unit].sc_bprot == BPROT_RHDLC)
|
|
iqp = &rbch_softc[unit].sc_hdlcq;
|
|
else
|
|
iqp = isdn_linktab[unit]->rx_queue;
|
|
|
|
if(!IF_QEMPTY(iqp))
|
|
{
|
|
splx(s);
|
|
return(1);
|
|
}
|
|
break;
|
|
|
|
case FWRITE:
|
|
if(!IF_QFULL(isdn_linktab[unit]->rx_queue))
|
|
{
|
|
splx(s);
|
|
return(1);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
}
|
|
selrecord(p, &rbch_softc[unit].selp);
|
|
splx(s);
|
|
return(0);
|
|
}
|
|
|
|
#endif /* OS_USES_POLL */
|
|
|
|
/*===========================================================================*
|
|
* 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;
|
|
|
|
rbch_softc[unit].sc_bprot = cd->bprot;
|
|
|
|
if(!(rbch_softc[unit].sc_devstate & ST_CONNECTED))
|
|
{
|
|
DBGL4(L4_RBCHDBG, "rbch_connect", ("unit %d, wakeup\n", unit));
|
|
rbch_softc[unit].sc_devstate |= ST_CONNECTED;
|
|
rbch_softc[unit].cd = cdp;
|
|
wakeup((caddr_t) &rbch_softc[unit]);
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* 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; */
|
|
|
|
DBGL4(L4_RBCHDBG, "rbch_disconnect", ("unit %d, deinit\n", unit));
|
|
rbch_softc[unit].sc_devstate &= ~ST_CONNECTED;
|
|
rbch_softc[unit].cd = NULL;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* 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_QFULL(&(rbch_softc[unit].sc_hdlcq)))
|
|
{
|
|
DBGL4(L4_RBCHDBG, "rbch_rx_data_rdy", ("unit %d: hdlc rx queue full!\n", unit));
|
|
m_freem(m);
|
|
}
|
|
else
|
|
{
|
|
IF_ENQUEUE(&(rbch_softc[unit].sc_hdlcq), m);
|
|
}
|
|
}
|
|
|
|
if(rbch_softc[unit].sc_devstate & ST_RDWAITDATA)
|
|
{
|
|
DBGL4(L4_RBCHDBG, "rbch_rx_data_rdy", ("unit %d, wakeup\n", unit));
|
|
rbch_softc[unit].sc_devstate &= ~ST_RDWAITDATA;
|
|
wakeup((caddr_t) &isdn_linktab[unit]->rx_queue);
|
|
}
|
|
else
|
|
{
|
|
DBGL4(L4_RBCHDBG, "rbch_rx_data_rdy", ("unit %d, NO wakeup\n", unit));
|
|
}
|
|
selwakeup(&rbch_softc[unit].selp);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* 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)
|
|
{
|
|
DBGL4(L4_RBCHDBG, "rbch_tx_queue_empty", ("unit %d, wakeup\n", unit));
|
|
rbch_softc[unit].sc_devstate &= ~ST_WRWAITEMPTY;
|
|
wakeup((caddr_t) &isdn_linktab[unit]->tx_queue);
|
|
}
|
|
else
|
|
{
|
|
DBGL4(L4_RBCHDBG, "rbch_tx_queue_empty", ("unit %d, NO wakeup\n", unit));
|
|
}
|
|
selwakeup(&rbch_softc[unit].selp);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* 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].cd)
|
|
rbch_softc[unit].cd->last_active_time = SECOND;
|
|
selwakeup(&rbch_softc[unit].selp);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* clear an hdlc rx queue for a rbch unit
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
rbch_clrq(int unit)
|
|
{
|
|
int x;
|
|
struct mbuf *m;
|
|
|
|
for(;;)
|
|
{
|
|
x = splimp();
|
|
IF_DEQUEUE(&rbch_softc[unit].sc_hdlcq, m);
|
|
splx(x);
|
|
if(m)
|
|
m_freem(m);
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* 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;
|
|
}
|
|
|
|
/*===========================================================================*/
|
|
|
|
#endif /* NI4BRBCH > 0 */
|