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/*
* ppp_mod.c - modload support for PPP pseudo-device driver.
*
* Copyright (c) 1994 The Australian National University.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation is hereby granted, provided that the above copyright
* notice appears in all copies. This software is provided without any
* warranty, express or implied. The Australian National University
* makes no representations about the suitability of this software for
* any purpose.
*
* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
* OR MODIFICATIONS.
*
* $Id$
*/
/*
* This file is used under Solaris 2.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/conf.h>
#include <sys/modctl.h>
#include <sys/sunddi.h>
#include <sys/ksynch.h>
#ifdef __STDC__
#define __P(x) x
#else
#define __P(x) ()
#endif
static int ppp_identify __P((dev_info_t *));
static int ppp_attach __P((dev_info_t *, ddi_attach_cmd_t));
static int ppp_detach __P((dev_info_t *, ddi_detach_cmd_t));
static int ppp_devinfo __P((dev_info_t *, ddi_info_cmd_t, void *, void **));
extern struct streamtab pppinfo;
extern krwlock_t ppp_lower_lock;
static dev_info_t *ppp_dip;
static struct cb_ops cb_ppp_ops = {
nulldev, nulldev, nodev, nodev, /* cb_open, ... */
nodev, nodev, nodev, nodev, /* cb_dump, ... */
nodev, nodev, nodev, nochpoll, /* cb_devmap, ... */
ddi_prop_op, /* cb_prop_op */
&pppinfo, /* cb_stream */
D_NEW|D_MP|D_MTQPAIR|D_MTOUTPERIM|D_MTOCEXCL /* cb_flag */
};
static struct dev_ops ppp_ops = {
DEVO_REV, /* devo_rev */
0, /* devo_refcnt */
ppp_devinfo, /* devo_getinfo */
ppp_identify, /* devo_identify */
nulldev, /* devo_probe */
ppp_attach, /* devo_attach */
ppp_detach, /* devo_detach */
nodev, /* devo_reset */
&cb_ppp_ops, /* devo_cb_ops */
NULL /* devo_bus_ops */
};
/*
* Module linkage information
*/
static struct modldrv modldrv = {
&mod_driverops, /* says this is a pseudo driver */
"PPP-2.3 multiplexing driver",
&ppp_ops /* driver ops */
};
static struct modlinkage modlinkage = {
MODREV_1,
(void *) &modldrv,
NULL
};
int
_init(void)
{
return mod_install(&modlinkage);
}
int
_fini(void)
{
return mod_remove(&modlinkage);
}
int
_info(mip)
struct modinfo *mip;
{
return mod_info(&modlinkage, mip);
}
static int
ppp_identify(dip)
dev_info_t *dip;
{
return strcmp(ddi_get_name(dip), "ppp") == 0? DDI_IDENTIFIED:
DDI_NOT_IDENTIFIED;
}
static int
ppp_attach(dip, cmd)
dev_info_t *dip;
ddi_attach_cmd_t cmd;
{
if (cmd != DDI_ATTACH)
return DDI_FAILURE;
if (ddi_create_minor_node(dip, "ppp", S_IFCHR, 0, DDI_PSEUDO, CLONE_DEV)
== DDI_FAILURE) {
ddi_remove_minor_node(dip, NULL);
return DDI_FAILURE;
}
rw_init(&ppp_lower_lock, NULL, RW_DRIVER, NULL);
return DDI_SUCCESS;
}
static int
ppp_detach(dip, cmd)
dev_info_t *dip;
ddi_detach_cmd_t cmd;
{
rw_destroy(&ppp_lower_lock);
ddi_remove_minor_node(dip, NULL);
return DDI_SUCCESS;
}
static int
ppp_devinfo(dip, cmd, arg, result)
dev_info_t *dip;
ddi_info_cmd_t cmd;
void *arg;
void **result;
{
int error;
error = DDI_SUCCESS;
switch (cmd) {
case DDI_INFO_DEVT2DEVINFO:
if (ppp_dip == NULL)
error = DDI_FAILURE;
else
*result = (void *) ppp_dip;
break;
case DDI_INFO_DEVT2INSTANCE:
*result = NULL;
break;
default:
error = DDI_FAILURE;
}
return error;
}
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