blob: f0a274d9f3428279eec9e25d67a6b94d6a5a38fa [file] [log] [blame]
/*
* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <IOKit/IOUserClient.h>
#include <IOKit/IOMessage.h>
#include <IOKit/system_management/IOWatchDogTimer.h>
#include <IOKit/pwr_mgt/RootDomain.h>
static IOReturn IOWatchDogTimerSleepHandler(void *target, void *refCon,
UInt32 messageType,
IOService *provider,
void *messageArgument,
vm_size_t argSize);
#define kWatchDogEnabledProperty "IOWatchDogEnabled"
#define super IOService
OSDefineMetaClassAndAbstractStructors(IOWatchDogTimer, IOService);
OSMetaClassDefineReservedUnused(IOWatchDogTimer, 0);
OSMetaClassDefineReservedUnused(IOWatchDogTimer, 1);
OSMetaClassDefineReservedUnused(IOWatchDogTimer, 2);
OSMetaClassDefineReservedUnused(IOWatchDogTimer, 3);
bool IOWatchDogTimer::start(IOService *provider)
{
if (!super::start(provider)) return false;
notifier = registerSleepWakeInterest(IOWatchDogTimerSleepHandler, this);
if (notifier == 0) return false;
setProperty(kWatchDogEnabledProperty, kOSBooleanFalse);
setWatchDogTimer(0);
registerService();
return true;
}
void IOWatchDogTimer::stop(IOService *provider)
{
setWatchDogTimer(0);
notifier->remove();
}
IOReturn IOWatchDogTimer::setProperties(OSObject *properties)
{
OSNumber *theNumber;
UInt32 theValue;
IOReturn result;
result = IOUserClient::clientHasPrivilege(current_task(),
kIOClientPrivilegeAdministrator);
if (result != kIOReturnSuccess) return kIOReturnNotPrivileged;
theNumber = OSDynamicCast(OSNumber, properties);
if (theNumber == 0) return kIOReturnBadArgument;
theValue = theNumber->unsigned32BitValue();
if (theValue == 0) {
setProperty(kWatchDogEnabledProperty, kOSBooleanFalse);
} else {
setProperty(kWatchDogEnabledProperty, kOSBooleanTrue);
}
setWatchDogTimer(theValue);
return kIOReturnSuccess;
}
static IOReturn IOWatchDogTimerSleepHandler(void *target, void */*refCon*/,
UInt32 messageType,
IOService */*provider*/,
void *messageArgument,
vm_size_t /*argSize*/)
{
IOWatchDogTimer *watchDogTimer = (IOWatchDogTimer *)target;
sleepWakeNote *swNote = (sleepWakeNote *)messageArgument;
if (messageType != kIOMessageSystemWillSleep) return kIOReturnUnsupported;
watchDogTimer->setProperty(kWatchDogEnabledProperty, kOSBooleanFalse);
watchDogTimer->setWatchDogTimer(0);
swNote->returnValue = 0;
acknowledgeSleepWakeNotification(swNote->powerRef);
return kIOReturnSuccess;
}