/**
* ****************************************************************************
* Copyright (c) 2010-2016 by Min Cai (min.cai.china@gmail.com).
* <p>
* This file is part of the Archimulator multicore architectural simulator.
* <p>
* Archimulator is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* <p>
* Archimulator is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* <p>
* You should have received a copy of the GNU General Public License
* along with Archimulator. If not, see <http://www.gnu.org/licenses/>.
* ****************************************************************************
*/
package archimulator.uncore.dram;
import archimulator.uncore.MemoryHierarchy;
/**
* Simple memory controller.
*
* @author Min Cai
*/
public class SimpleMemoryController extends MemoryController {
private int latency;
/**
* Create a simple memory controller.
*
* @param memoryHierarchy the parent memory hierarchy
*/
public SimpleMemoryController(MemoryHierarchy memoryHierarchy) {
super(memoryHierarchy);
int busWidth = getExperiment().getConfig().getSimpleMemoryControllerBusWidth();
int memoryLatency = getExperiment().getConfig().getSimpleMemoryControllerMemoryLatency();
int memoryTrunkLatency = getExperiment().getConfig().getSimpleMemoryControllerMemoryTrunkLatency();
int numChunks = (this.getLineSize() - (busWidth - 1)) / busWidth;
if ((numChunks <= 0)) {
throw new IllegalArgumentException();
}
this.latency = memoryLatency + (memoryTrunkLatency * (numChunks - 1));
}
/**
* Access the specified address.
*
* @param address the address
* @param onCompletedCallback the callback action performed when the access is completed
*/
@Override
protected void access(int address, Runnable onCompletedCallback) {
this.getCycleAccurateEventQueue().schedule(this, onCompletedCallback, this.getLatency());
}
/**
* Get the latency.
*
* @return the latency
*/
private int getLatency() {
return latency;
}
}