116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2020, Parallax Software, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#pragma once
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#include "DisallowCopyAssign.hh"
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#include "MinMax.hh"
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#include "LibertyClass.hh"
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#include "NetworkClass.hh"
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#include "RiseFallMinMax.hh"
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namespace sta {
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class InputDriveCell;
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// Input drive description from
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// set_driving_cell
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// set_drive
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// set_input_transition
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class InputDrive
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{
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public:
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explicit InputDrive();
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~InputDrive();
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void setSlew(const RiseFallBoth *rf,
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const MinMaxAll *min_max,
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float slew);
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void setDriveResistance(const RiseFallBoth *rf,
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const MinMaxAll *min_max,
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float res);
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void driveResistance(const RiseFall *rf,
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const MinMax *min_max,
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float &res,
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bool &exists);
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bool hasDriveResistance(const RiseFall *rf,
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const MinMax *min_max);
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bool driveResistanceMinMaxEqual(const RiseFall *rf);
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void setDriveCell(LibertyLibrary *library,
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LibertyCell *cell,
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LibertyPort *from_port,
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float *from_slews,
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LibertyPort *to_port,
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const RiseFallBoth *rf,
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const MinMaxAll *min_max);
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void driveCell(const RiseFall *rf,
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const MinMax *min_max,
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LibertyCell *&cell,
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LibertyPort *&from_port,
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float *&from_slews,
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LibertyPort *&to_port);
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InputDriveCell *driveCell(const RiseFall *rf,
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const MinMax *min_max);
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bool hasDriveCell(const RiseFall *rf,
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const MinMax *min_max);
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// True if rise/fall/min/max drive cells are equal.
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bool driveCellsEqual();
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void slew(const RiseFall *rf,
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const MinMax *min_max,
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float &slew,
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bool &exists);
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RiseFallMinMax *slews() { return &slews_; }
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private:
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DISALLOW_COPY_AND_ASSIGN(InputDrive);
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RiseFallMinMax slews_;
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RiseFallMinMax drive_resistances_;
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// Separate rise/fall/min/max drive cells.
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InputDriveCell *drive_cells_[RiseFall::index_count][MinMax::index_count];
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};
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class InputDriveCell
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{
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public:
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InputDriveCell(LibertyLibrary *library,
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LibertyCell *cell,
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LibertyPort *from_port,
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float *from_slews,
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LibertyPort *to_port);
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LibertyLibrary *library() const { return library_; }
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void setLibrary(LibertyLibrary *library);
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LibertyCell *cell() const { return cell_; }
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void setCell(LibertyCell *cell);
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LibertyPort *fromPort() const { return from_port_; }
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void setFromPort(LibertyPort *from_port);
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float *fromSlews() { return from_slews_; }
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void setFromSlews(float *from_slews);
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LibertyPort *toPort() const { return to_port_; }
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void setToPort(LibertyPort *to_port);
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bool equal(InputDriveCell *drive) const;
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private:
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DISALLOW_COPY_AND_ASSIGN(InputDriveCell);
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LibertyLibrary *library_;
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LibertyCell *cell_;
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LibertyPort *from_port_;
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float from_slews_[RiseFall::index_count];
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LibertyPort *to_port_;
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};
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} // namespace
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