ElectricalDriver.cc revision 10448 
1/* Copyright (c) 2012 Massachusetts Institute of Technology
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19 * THE SOFTWARE.
20 */
21
22
23#include "model/timing_graph/ElectricalDriver.h"
24#include "model/timing_graph/ElectricalNet.h"
25#include "model/ElectricalModel.h"
26
27namespace DSENT
28{
29    ElectricalDriver::ElectricalDriver(const String& instance_name_, ElectricalModel* model_, bool sizable_)
30        : ElectricalTimingNode(instance_name_, model_), m_output_res_(0.0), m_sizable_(sizable_)
31    {
32
33    }
34
35    ElectricalDriver::~ElectricalDriver()
36    {
37
38    }
39
40    void ElectricalDriver::setOutputRes(double output_res_)
41    {
42        m_output_res_ = output_res_;
43        return;
44    }
45
46    double ElectricalDriver::getOutputRes() const
47    {
48        return m_output_res_;
49    }
50
51    double ElectricalDriver::calculateDelay() const
52    {
53        return 0.693 * m_output_res_ * getTotalDownstreamCap();
54    }
55
56    double ElectricalDriver::calculateTransition() const
57    {
58        return 1.386 * getMaxUpstreamRes() * getTotalDownstreamCap();
59    }
60
61    double ElectricalDriver::getMaxUpstreamRes() const
62    {
63        return m_output_res_;
64    }
65
66    bool ElectricalDriver::isSizable() const
67    {
68        return m_sizable_;
69    }
70
71    bool ElectricalDriver::hasMaxDrivingStrength() const
72    {
73        if (!isSizable())
74        {
75            return true;
76        }
77        return (getModel() == NULL) || (getModel()->hasMaxDrivingStrength());
78    }
79
80    bool ElectricalDriver::hasMinDrivingStrength() const
81    {
82        if (!isSizable())
83        {
84            return true;
85        }
86        return (getModel() == NULL) || (getModel()->hasMinDrivingStrength());
87    }
88
89    void ElectricalDriver::increaseDrivingStrength()
90    {
91        ASSERT(isSizable(), "[Error] " + getInstanceName() +
92            " -> Attempted to size up unsizable driver!");
93        if(!hasMaxDrivingStrength())
94        {
95            getModel()->increaseDrivingStrength();
96        }
97        return;
98    }
99
100    void ElectricalDriver::decreaseDrivingStrength()
101    {
102        ASSERT(isSizable(), "[Error] " + getInstanceName() +
103            " -> Attempted to size down unsizable driver!");
104        if(!hasMinDrivingStrength())
105        {
106            getModel()->decreaseDrivingStrength();
107        }
108        return;
109    }
110
111    bool ElectricalDriver::isDriver() const
112    {
113        return true;
114    }
115} // namespace DSENT
116
117