NetBSD/sys/dev/sysmon/sysmon.c

149 lines
3.8 KiB
C

/* $NetBSD: sysmon.c,v 1.6 2002/09/06 13:18:43 gehenna Exp $ */
/*-
* Copyright (c) 2000 Zembu Labs, Inc.
* All rights reserved.
*
* Author: Jason R. Thorpe <thorpej@zembu.com>
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Zembu Labs, Inc.
* 4. Neither the name of Zembu Labs nor the names of its employees may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ZEMBU LABS, INC. ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
* RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DIS-
* CLAIMED. IN NO EVENT SHALL ZEMBU LABS 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.
*/
/*
* Clearing house for system monitoring hardware. We currently
* handle environmental sensors and watchdog timers.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sysmon.c,v 1.6 2002/09/06 13:18:43 gehenna Exp $");
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/errno.h>
#include <sys/fcntl.h>
#include <sys/lock.h>
#include <sys/callout.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <dev/sysmon/sysmonvar.h>
#include <dev/sysmon/sysmonconf.h>
dev_type_open(sysmonopen);
dev_type_close(sysmonclose);
dev_type_ioctl(sysmonioctl);
const struct cdevsw sysmon_cdevsw = {
sysmonopen, sysmonclose, noread, nowrite, sysmonioctl,
nostop, notty, nopoll, nommap,
};
/*
* sysmonopen:
*
* Open the system monitor device.
*/
int
sysmonopen(dev_t dev, int flag, int mode, struct proc *p)
{
int error;
switch (minor(dev)) {
#if NSYSMON_ENVSYS > 0
case SYSMON_MINOR_ENVSYS:
error = sysmonopen_envsys(dev, flag, mode, p);
break;
#endif
#if NSYSMON_WDOG > 0
case SYSMON_MINOR_WDOG:
error = sysmonopen_wdog(dev, flag, mode, p);
break;
#endif
default:
error = ENODEV;
}
return (error);
}
/*
* sysmonclose:
*
* Close the system monitor device.
*/
int
sysmonclose(dev_t dev, int flag, int mode, struct proc *p)
{
int error;
switch (minor(dev)) {
#if NSYSMON_ENVSYS > 0
case SYSMON_MINOR_ENVSYS:
error = sysmonclose_envsys(dev, flag, mode, p);
break;
#endif
#if NSYSMON_WDOG > 0
case SYSMON_MINOR_WDOG:
error = sysmonclose_wdog(dev, flag, mode, p);
break;
#endif
default:
error = ENODEV;
}
return (error);
}
/*
* sysmonioctl:
*
* Perform a control request.
*/
int
sysmonioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
int error;
switch (minor(dev)) {
#if NSYSMON_ENVSYS > 0
case SYSMON_MINOR_ENVSYS:
error = sysmonioctl_envsys(dev, cmd, data, flag, p);
break;
#endif
#if NSYSMON_WDOG > 0
case SYSMON_MINOR_WDOG:
error = sysmonioctl_wdog(dev, cmd, data, flag, p);
break;
#endif
default:
error = ENODEV;
}
return (error);
}