d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c3aac50f28
freebsd-skq/sys/i4b/layer4/i4b_i4bdrv.c
Peter Wemm c3aac50f28 $Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00

979 lines
22 KiB
C
Raw Blame History

/*
* Copyright (c) 1997, 1999 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_i4bdrv.c - i4b userland interface driver
* --------------------------------------------
*
* $FreeBSD$
*
* last edit-date: [Tue Jun 8 19:48:16 1999]
*
*---------------------------------------------------------------------------*/
#include "i4b.h"
#include "i4bipr.h"
#include "i4btel.h"
#ifdef __bsdi__
#include "ibc.h"
#else
#include "i4bisppp.h"
#endif
#if NI4B > 1
#error "only 1 (one) i4b device possible!"
#endif
#if NI4B > 0
#include <sys/param.h>
#if defined(__FreeBSD_version) && __FreeBSD_version >= 300001
#include <sys/ioccom.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#else
#include <sys/ioctl.h>
#endif
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <net/if.h>
#ifdef __FreeBSD__
#include <machine/i4b_debug.h>
#include <machine/i4b_ioctl.h>
#include <machine/i4b_cause.h>
#else
#include <i4b/i4b_debug.h>
#include <i4b/i4b_ioctl.h>
#include <i4b/i4b_cause.h>
#endif
#include <i4b/include/i4b_l3l4.h>
#include <i4b/include/i4b_mbuf.h>
#include <i4b/include/i4b_global.h>
#include <i4b/layer4/i4b_l4.h>
#ifdef OS_USES_POLL
#include <sys/poll.h>
#endif
struct selinfo select_rd_info;
static struct ifqueue i4b_rdqueue;
static int openflag = 0;
static int selflag = 0;
static int readflag = 0;
#ifndef __FreeBSD__
#define PDEVSTATIC /* - not static - */
PDEVSTATIC void i4battach __P((void));
PDEVSTATIC int i4bopen __P((dev_t dev, int flag, int fmt, struct proc *p));
PDEVSTATIC int i4bclose __P((dev_t dev, int flag, int fmt, struct proc *p));
PDEVSTATIC int i4bread __P((dev_t dev, struct uio *uio, int ioflag));
#ifdef __bsdi__
PDEVSTATIC int i4bioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p));
#else
PDEVSTATIC int i4bioctl __P((dev_t dev, int cmd, caddr_t data, int flag, struct proc *p));
#endif
#ifdef OS_USES_POLL
PDEVSTATIC int i4bpoll __P((dev_t dev, int events, struct proc *p));
#else
PDEVSTATIC int i4bselect __P((dev_t dev, int rw, struct proc *p));
#endif
#endif /* #ifndef __FreeBSD__ */
#if BSD > 199306 && defined(__FreeBSD__)
#define PDEVSTATIC static
PDEVSTATIC d_open_t i4bopen;
PDEVSTATIC d_close_t i4bclose;
PDEVSTATIC d_read_t i4bread;
PDEVSTATIC d_ioctl_t i4bioctl;
#ifdef OS_USES_POLL
PDEVSTATIC d_poll_t i4bpoll;
#define POLLFIELD i4bpoll
#else
PDEVSTATIC d_select_t i4bselect;
#define POLLFIELD i4bselect
#endif
#define CDEV_MAJOR 60
#if defined (__FreeBSD_version) && __FreeBSD_version >= 400006
static struct cdevsw i4b_cdevsw = {
/* open */ i4bopen,
/* close */ i4bclose,
/* read */ i4bread,
/* write */ nowrite,
/* ioctl */ i4bioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ POLLFIELD,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "i4b",
/* parms */ noparms,
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* maxio */ 0,
/* bmaj */ -1
};
#else
static struct cdevsw i4b_cdevsw = {
i4bopen, i4bclose, i4bread, nowrite,
i4bioctl, nostop, nullreset, nodevtotty,
POLLFIELD, nommap, NULL, "i4b", NULL, -1
};
#endif
PDEVSTATIC void i4battach(void *);
PSEUDO_SET(i4battach, i4b_i4bdrv);
static void
i4b_drvinit(void *unused)
{
#if defined (__FreeBSD_version) && __FreeBSD_version >= 400006
cdevsw_add(&i4b_cdevsw);
#else
static int i4b_devsw_installed = 0;
dev_t dev;
if( ! i4b_devsw_installed )
{
dev = makedev(CDEV_MAJOR,0);
cdevsw_add(&dev,&i4b_cdevsw,NULL);
i4b_devsw_installed = 1;
}
#endif
}
SYSINIT(i4bdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,i4b_drvinit,NULL)
#endif /* BSD > 199306 && defined(__FreeBSD__) */
#ifdef __bsdi__
#include <sys/device.h>
int i4bmatch(struct device *parent, struct cfdata *cf, void *aux);
void dummy_i4battach(struct device*, struct device *, void *);
#define CDEV_MAJOR 65
static struct cfdriver i4bcd =
{ NULL, "i4b", i4bmatch, dummy_i4battach, DV_DULL,
sizeof(struct cfdriver) };
struct devsw i4bsw =
{ &i4bcd,
i4bopen, i4bclose, i4bread, nowrite,
i4bioctl, i4bselect, nommap, nostrat,
nodump, nopsize, 0, nostop
};
int
i4bmatch(struct device *parent, struct cfdata *cf, void *aux)
{
printf("i4bmatch: aux=0x%x\n", aux);
return 1;
}
void
dummy_i4battach(struct device *parent, struct device *self, void *aux)
{
printf("dummy_i4battach: aux=0x%x\n", aux);
}
#endif /* __bsdi__ */
/*---------------------------------------------------------------------------*
* interface attach routine
*---------------------------------------------------------------------------*/
PDEVSTATIC void
#ifdef __FreeBSD__
i4battach(void *dummy)
#else
i4battach()
#endif
{
#ifndef HACK_NO_PSEUDO_ATTACH_MSG
printf("i4b: ISDN call control device attached\n");
#endif
i4b_rdqueue.ifq_maxlen = IFQ_MAXLEN;
make_dev(&i4b_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4b");
}
/*---------------------------------------------------------------------------*
* i4bopen - device driver open routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
i4bopen(dev_t dev, int flag, int fmt, struct proc *p)
{
int x;
if(minor(dev))
return(ENXIO);
if(openflag)
return(EBUSY);
x = splimp();
openflag = 1;
i4b_l4_daemon_attached();
splx(x);
return(0);
}
/*---------------------------------------------------------------------------*
* i4bclose - device driver close routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
i4bclose(dev_t dev, int flag, int fmt, struct proc *p)
{
int x = splimp();
openflag = 0;
i4b_l4_daemon_detached();
i4b_Dcleanifq(&i4b_rdqueue);
splx(x);
return(0);
}
/*---------------------------------------------------------------------------*
* i4bread - device driver read routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
i4bread(dev_t dev, struct uio *uio, int ioflag)
{
struct mbuf *m;
int x;
int error = 0;
if(minor(dev))
return(ENODEV);
while(IF_QEMPTY(&i4b_rdqueue))
{
x = splimp();
readflag = 1;
splx(x);
tsleep((caddr_t) &i4b_rdqueue, (PZERO + 1) | PCATCH, "bird", 0);
}
x = splimp();
IF_DEQUEUE(&i4b_rdqueue, m);
splx(x);
if(m && m->m_len)
error = uiomove(m->m_data, m->m_len, uio);
else
error = EIO;
if(m)
i4b_Dfreembuf(m);
return(error);
}
/*---------------------------------------------------------------------------*
* i4bioctl - device driver ioctl routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
#if defined (__FreeBSD_version) && __FreeBSD_version >= 300003
i4bioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
#elif defined(__bsdi__)
i4bioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
#else
i4bioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
#endif
{
call_desc_t *cd;
int error = 0;
if(minor(dev))
return(ENODEV);
switch(cmd)
{
/* cdid request, reserve cd and return cdid */
case I4B_CDID_REQ:
{
msg_cdid_req_t *mir;
mir = (msg_cdid_req_t *)data;
cd = reserve_cd();
mir->cdid = cd->cdid;
break;
}
/* connect request, dial out to remote */
case I4B_CONNECT_REQ:
{
msg_connect_req_t *mcr;
mcr = (msg_connect_req_t *)data; /* setup ptr */
if((cd = cd_by_cdid(mcr->cdid)) == NULL)/* get cd */
{
DBGL4(L4_ERR, "i4bioctl", ("I4B_CONNECT_REQ ioctl, cdid not found!\n"));
error = EINVAL;
break;
}
cd->controller = mcr->controller; /* fill cd */
cd->bprot = mcr->bprot;
cd->driver = mcr->driver;
cd->driver_unit = mcr->driver_unit;
cd->cr = get_rand_cr(ctrl_desc[cd->controller].unit);
cd->shorthold_data.shorthold_algorithm = mcr->shorthold_data.shorthold_algorithm;
cd->shorthold_data.unitlen_time = mcr->shorthold_data.unitlen_time;
cd->shorthold_data.idle_time = mcr->shorthold_data.idle_time;
cd->shorthold_data.earlyhup_time = mcr->shorthold_data.earlyhup_time;
cd->last_aocd_time = 0;
if(mcr->unitlen_method == ULEN_METHOD_DYNAMIC)
cd->aocd_flag = 1;
else
cd->aocd_flag = 0;
cd->cunits = 0;
cd->max_idle_time = 0; /* this is outgoing */
cd->dir = DIR_OUTGOING;
DBGL4(L4_TIMO, "i4bioctl", ("I4B_CONNECT_REQ times, algorithm=%ld unitlen=%ld idle=%ld earlyhup=%ld\n",
(long)cd->shorthold_data.shorthold_algorithm, (long)cd->shorthold_data.unitlen_time,
(long)cd->shorthold_data.idle_time, (long)cd->shorthold_data.earlyhup_time));
strcpy(cd->dst_telno, mcr->dst_telno);
strcpy(cd->src_telno, mcr->src_telno);
cd->display[0] = '\0';
SET_CAUSE_TYPE(cd->cause_in, CAUSET_I4B);
SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_NORMAL);
switch(mcr->channel)
{
case CHAN_B1:
case CHAN_B2:
if(ctrl_desc[mcr->controller].bch_state[mcr->channel] != BCH_ST_FREE)
SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_NOCHAN);
break;
case CHAN_ANY:
if((ctrl_desc[mcr->controller].bch_state[CHAN_B1] != BCH_ST_FREE) &&
(ctrl_desc[mcr->controller].bch_state[CHAN_B2] != BCH_ST_FREE))
SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_NOCHAN);
break;
default:
SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_NOCHAN);
break;
}
cd->channelid = mcr->channel;
cd->isdntxdelay = mcr->txdelay;
/* check whether we have a pointer. Seems like */
/* this should be adequate. GJ 19.09.97 */
if(ctrl_desc[cd->controller].N_CONNECT_REQUEST == NULL)
/*XXX*/ SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_NOCHAN);
if((GET_CAUSE_VAL(cd->cause_in)) != CAUSE_I4B_NORMAL)
{
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
else
{
(*ctrl_desc[cd->controller].N_CONNECT_REQUEST)(mcr->cdid);
}
break;
}
/* connect response, accept/reject/ignore incoming call */
case I4B_CONNECT_RESP:
{
msg_connect_resp_t *mcrsp;
mcrsp = (msg_connect_resp_t *)data;
if((cd = cd_by_cdid(mcrsp->cdid)) == NULL)/* get cd */
{
DBGL4(L4_ERR, "i4bioctl", ("I4B_CONNECT_RESP ioctl, cdid not found!\n"));
error = EINVAL;
break;
}
T400_stop(cd);
cd->driver = mcrsp->driver;
cd->driver_unit = mcrsp->driver_unit;
cd->max_idle_time = mcrsp->max_idle_time;
cd->shorthold_data.shorthold_algorithm = SHA_FIXU;
cd->shorthold_data.unitlen_time = 0; /* this is incoming */
cd->shorthold_data.idle_time = 0;
cd->shorthold_data.earlyhup_time = 0;
cd->isdntxdelay = mcrsp->txdelay;
DBGL4(L4_TIMO, "i4bioctl", ("I4B_CONNECT_RESP max_idle_time set to %ld seconds\n", (long)cd->max_idle_time));
(*ctrl_desc[cd->controller].N_CONNECT_RESPONSE)(mcrsp->cdid, mcrsp->response, mcrsp->cause);
break;
}
/* disconnect request, actively terminate connection */
case I4B_DISCONNECT_REQ:
{
msg_discon_req_t *mdr;
mdr = (msg_discon_req_t *)data;
if((cd = cd_by_cdid(mdr->cdid)) == NULL)/* get cd */
{
DBGL4(L4_ERR, "i4bioctl", ("I4B_DISCONNECT_REQ ioctl, cdid not found!\n"));
error = EINVAL;
break;
}
/* preset causes with our cause */
cd->cause_in = cd->cause_out = mdr->cause;
(*ctrl_desc[cd->controller].N_DISCONNECT_REQUEST)(mdr->cdid, mdr->cause);
break;
}
/* controller info request */
case I4B_CTRL_INFO_REQ:
{
msg_ctrl_info_req_t *mcir;
mcir = (msg_ctrl_info_req_t *)data;
mcir->ncontroller = nctrl;
if(mcir->controller > nctrl)
{
mcir->ctrl_type = -1;
mcir->card_type = -1;
}
else
{
mcir->ctrl_type =
ctrl_desc[mcir->controller].ctrl_type;
mcir->card_type =
ctrl_desc[mcir->controller].card_type;
if(ctrl_desc[mcir->controller].ctrl_type == CTRL_PASSIVE)
mcir->tei = ctrl_desc[mcir->controller].tei;
else
mcir->tei = -1;
}
break;
}
/* dial response */
case I4B_DIALOUT_RESP:
{
drvr_link_t *dlt = NULL;
msg_dialout_resp_t *mdrsp;
mdrsp = (msg_dialout_resp_t *)data;
switch(mdrsp->driver)
{
#if NI4BIPR > 0
case BDRV_IPR:
dlt = ipr_ret_linktab(mdrsp->driver_unit);
break;
#endif
#if NI4BISPPP > 0
case BDRV_ISPPP:
dlt = i4bisppp_ret_linktab(mdrsp->driver_unit);
break;
#endif
#if NI4BTEL > 0
case BDRV_TEL:
dlt = tel_ret_linktab(mdrsp->driver_unit);
break;
#endif
#if NIBC > 0
case BDRV_IBC:
dlt = ibc_ret_linktab(mdrsp->driver_unit);
break;
#endif
}
if(dlt != NULL)
(*dlt->dial_response)(mdrsp->driver_unit, mdrsp->stat, mdrsp->cause);
break;
}
/* update timeout value */
case I4B_TIMEOUT_UPD:
{
msg_timeout_upd_t *mtu;
int x;
mtu = (msg_timeout_upd_t *)data;
DBGL4(L4_TIMO, "i4bioctl", ("I4B_TIMEOUT_UPD ioctl, alg %d, unit %d, idle %d, early %d!\n",
mtu->shorthold_data.shorthold_algorithm, mtu->shorthold_data.unitlen_time,
mtu->shorthold_data.idle_time, mtu->shorthold_data.earlyhup_time ));
if((cd = cd_by_cdid(mtu->cdid)) == NULL)/* get cd */
{
DBGL4(L4_ERR, "i4bioctl", ("I4B_TIMEOUT_UPD ioctl, cdid not found!\n"));
error = EINVAL;
break;
}
switch( mtu->shorthold_data.shorthold_algorithm )
{
case SHA_FIXU:
/*
* For this algorithm unitlen_time,
* idle_time and earlyhup_time are used.
*/
if(!(mtu->shorthold_data.unitlen_time >= 0 &&
mtu->shorthold_data.idle_time >= 0 &&
mtu->shorthold_data.earlyhup_time >= 0))
{
DBGL4(L4_ERR, "i4bioctl", ("I4B_TIMEOUT_UPD ioctl, invalid args for fix unit algorithm!\n"));
error = EINVAL;
}
break;
case SHA_VARU:
/*
* For this algorithm unitlen_time and
* idle_time are used. both must be
* positive integers. earlyhup_time is
* not used and must be 0.
*/
if(!(mtu->shorthold_data.unitlen_time > 0 &&
mtu->shorthold_data.idle_time >= 0 &&
mtu->shorthold_data.earlyhup_time == 0))
{
DBGL4(L4_ERR, "i4bioctl", ("I4B_TIMEOUT_UPD ioctl, invalid args for var unit algorithm!\n"));
error = EINVAL;
}
break;
default:
DBGL4(L4_ERR, "i4bioctl", ("I4B_TIMEOUT_UPD ioctl, invalid algorithm!\n"));
error = EINVAL;
break;
}
/*
* any error set above requires us to break
* out of the outer switch
*/
if(error != 0)
break;
x = SPLI4B();
cd->shorthold_data.shorthold_algorithm = mtu->shorthold_data.shorthold_algorithm;
cd->shorthold_data.unitlen_time = mtu->shorthold_data.unitlen_time;
cd->shorthold_data.idle_time = mtu->shorthold_data.idle_time;
cd->shorthold_data.earlyhup_time = mtu->shorthold_data.earlyhup_time;
splx(x);
break;
}
/* soft enable/disable interface */
case I4B_UPDOWN_IND:
{
msg_updown_ind_t *mui;
mui = (msg_updown_ind_t *)data;
#if NI4BIPR > 0
if(mui->driver == BDRV_IPR)
{
drvr_link_t *dlt;
dlt = ipr_ret_linktab(mui->driver_unit);
(*dlt->updown_ind)(mui->driver_unit, mui->updown);
}
#endif
break;
}
/* send ALERT request */
case I4B_ALERT_REQ:
{
msg_alert_req_t *mar;
mar = (msg_alert_req_t *)data;
if((cd = cd_by_cdid(mar->cdid)) == NULL)
{
DBGL4(L4_ERR, "i4bioctl", ("I4B_ALERT_REQ ioctl, cdid not found!\n"));
error = EINVAL;
break;
}
T400_stop(cd);
(*ctrl_desc[cd->controller].N_ALERT_REQUEST)(mar->cdid);
break;
}
/* version/release number request */
case I4B_VR_REQ:
{
msg_vr_req_t *mvr;
mvr = (msg_vr_req_t *)data;
mvr->version = VERSION;
mvr->release = REL;
mvr->step = STEP;
break;
}
/* Download request */
case I4B_CTRL_DOWNLOAD:
{
struct isdn_dr_prot *prots = NULL, *prots2 = NULL;
struct isdn_download_request *r =
(struct isdn_download_request*)data;
int i;
if (r->controller < 0 || r->controller >= nctrl)
{
error = ENODEV;
goto download_done;
}
if(!ctrl_desc[r->controller].N_DOWNLOAD)
{
error = ENODEV;
goto download_done;
}
prots = malloc(r->numprotos * sizeof(struct isdn_dr_prot),
M_DEVBUF, M_WAITOK);
prots2 = malloc(r->numprotos * sizeof(struct isdn_dr_prot),
M_DEVBUF, M_WAITOK);
if(!prots || !prots2)
{
error = ENOMEM;
goto download_done;
}
copyin(r->protocols, prots, r->numprotos * sizeof(struct isdn_dr_prot));
for(i = 0; i < r->numprotos; i++)
{
prots2[i].microcode = malloc(prots[i].bytecount, M_DEVBUF, M_WAITOK);
copyin(prots[i].microcode, prots2[i].microcode, prots[i].bytecount);
prots2[i].bytecount = prots[i].bytecount;
}
error = ctrl_desc[r->controller].N_DOWNLOAD(
ctrl_desc[r->controller].unit,
r->numprotos, prots2);
download_done:
if(prots2)
{
for(i = 0; i < r->numprotos; i++)
{
if(prots2[i].microcode)
{
free(prots2[i].microcode, M_DEVBUF);
}
}
free(prots2, M_DEVBUF);
}
if(prots)
{
free(prots, M_DEVBUF);
}
break;
}
/* Diagnostic request */
case I4B_ACTIVE_DIAGNOSTIC:
{
struct isdn_diagnostic_request req, *r =
(struct isdn_diagnostic_request*)data;
req.in_param = req.out_param = NULL;
if (r->controller < 0 || r->controller >= nctrl)
{
error = ENODEV;
goto diag_done;
}
if(!ctrl_desc[r->controller].N_DIAGNOSTICS)
{
error = ENODEV;
goto diag_done;
}
memcpy(&req, r, sizeof(req));
if(req.in_param_len)
{
req.in_param = malloc(r->in_param_len, M_DEVBUF, M_WAITOK);
if(!req.in_param)
{
error = ENOMEM;
goto diag_done;
}
error = copyin(r->in_param, req.in_param, req.in_param_len);
if (error)
goto diag_done;
}
if(req.out_param_len)
{
req.out_param = malloc(r->out_param_len, M_DEVBUF, M_WAITOK);
if(!req.out_param)
{
error = ENOMEM;
goto diag_done;
}
}
error = ctrl_desc[r->controller].N_DIAGNOSTICS(r->controller, &req);
if(!error && req.out_param_len)
error = copyout(req.out_param, r->out_param, req.out_param_len);
diag_done:
if(req.in_param)
free(req.in_param, M_DEVBUF);
if(req.out_param)
free(req.out_param, M_DEVBUF);
break;
}
/* default */
default:
error = ENOTTY;
break;
}
return(error);
}
#ifdef OS_USES_SELECT
/*---------------------------------------------------------------------------*
* i4bselect - device driver select routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
i4bselect(dev_t dev, int rw, struct proc *p)
{
int x;
if(minor(dev))
return(ENODEV);
switch(rw)
{
case FREAD:
if(!IF_QEMPTY(&i4b_rdqueue))
return(1);
x = splimp();
selrecord(p, &select_rd_info);
selflag = 1;
splx(x);
return(0);
break;
case FWRITE:
return(1);
break;
}
return(0);
}
#else /* OS_USES_SELECT */
/*---------------------------------------------------------------------------*
* i4bpoll - device driver poll routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
i4bpoll(dev_t dev, int events, struct proc *p)
{
int x;
if(minor(dev))
return(ENODEV);
if((events & POLLIN) || (events & POLLRDNORM))
{
if(!IF_QEMPTY(&i4b_rdqueue))
return(1);
x = splimp();
selrecord(p, &select_rd_info);
selflag = 1;
splx(x);
return(0);
}
else if((events & POLLOUT) || (events & POLLWRNORM))
{
return(1);
}
return(0);
}
#endif /* OS_USES_SELECT */
/*---------------------------------------------------------------------------*
* i4bputqueue - put message into queue to userland
*---------------------------------------------------------------------------*/
void
i4bputqueue(struct mbuf *m)
{
int x;
if(!openflag)
{
i4b_Dfreembuf(m);
return;
}
x = splimp();
if(IF_QFULL(&i4b_rdqueue))
{
struct mbuf *m1;
IF_DEQUEUE(&i4b_rdqueue, m1);
i4b_Dfreembuf(m1);
DBGL4(L4_ERR, "i4bputqueue", ("ERROR, queue full, removing entry!\n"));
}
IF_ENQUEUE(&i4b_rdqueue, m);
splx(x);
if(readflag)
{
readflag = 0;
wakeup((caddr_t) &i4b_rdqueue);
}
if(selflag)
{
selflag = 0;
selwakeup(&select_rd_info);
}
}
/*---------------------------------------------------------------------------*
* i4bputqueue_hipri - put message into front of queue to userland
*---------------------------------------------------------------------------*/
void
i4bputqueue_hipri(struct mbuf *m)
{
int x;
if(!openflag)
{
i4b_Dfreembuf(m);
return;
}
x = splimp();
if(IF_QFULL(&i4b_rdqueue))
{
struct mbuf *m1;
IF_DEQUEUE(&i4b_rdqueue, m1);
i4b_Dfreembuf(m1);
DBGL4(L4_ERR, "i4bputqueue", ("ERROR, queue full, removing entry!\n"));
}
IF_PREPEND(&i4b_rdqueue, m);
splx(x);
if(readflag)
{
readflag = 0;
wakeup((caddr_t) &i4b_rdqueue);
}
if(selflag)
{
selflag = 0;
selwakeup(&select_rd_info);
}
}
#endif /* NI4B > 0 */
Reference in New Issue View Git Blame Copy Permalink