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/*
* Copyright (c) 2005 Washington University in St. Louis.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of the copyright holders nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*
*/
/*
* - Revision -------------------------------------------------------------
* $Revision: 1.6 $
* $Date: 2010-06-29 22:07:50 $
* ========================================================================
*/
/**
* Please refer to TEP 115 for more information about this component and its
* intended use.<br><br>
*
* This component povides a power management policy for managing the power
* states of non-virtualized devices. Non-virtualized devices are shared
* using a parameterized Resource interface, and are powered down according
* to some policy whenever there are no more pending requests to that Resource.
* The policy implemented by this component is to delay the power down of a
* device by some contant factor. Such a policy is useful whenever a device
* has a long wake-up latency. The cost of waiting for the device to power
* up can be avoided if the device is requested again before some predetermined
* amount of time.<br><br>
*
* Powerdown of the device is done through the <code>StdControl</code>
* interface, so this component can only be used with those devices that
* provide that interface.<br><br>
*
* For devices providing either the <code>AsyncStdControl</code> or
* <code>SplitControl</code> interfaces, please use either the
* <code>AsyncStdControlDeferredPowerManagerC</code> component or the
* <code>SplitControlDeferredPowerManagerC</code> component respectively.
*
* @param <b>delay</b> -- The amount of time the power manager should wait
* before shutting down the device once it is free.
*
* @author Kevin Klues (klueska@cs.wustl.edu)
*/
generic configuration StdControlDeferredPowerManagerC(uint32_t delay)
{
uses {
interface StdControl;
interface PowerDownCleanup;
interface ResourceDefaultOwner;
interface ArbiterInfo;
}
}
implementation {
components new TimerMilliC(),
new DeferredPowerManagerP(delay) as PowerManager;
PowerManager.StdControl = StdControl;
PowerManager.PowerDownCleanup = PowerDownCleanup;
PowerManager.ResourceDefaultOwner = ResourceDefaultOwner;
PowerManager.ArbiterInfo = ArbiterInfo;
PowerManager.TimerMilli -> TimerMilliC;
}
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