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LinearModel.hh
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LinearModel.hh
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// OpenSTA, Static Timing Analyzer
// Copyright (c) 2023, Parallax Software, Inc.
//
// This program 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.
//
// This program 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.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#pragma once
#include "TimingModel.hh"
namespace sta {
class GateLinearModel : public GateTimingModel
{
public:
GateLinearModel(float intrinsic, float resistance);
void gateDelay(const LibertyCell *cell,
const Pvt *pvt,
float in_slew,
float load_cap,
float related_out_cap,
bool pocv_enabled,
// Return values.
ArcDelay &gate_delay,
Slew &drvr_slew) const override;
string reportGateDelay(const LibertyCell *cell,
const Pvt *pvt,
float in_slew,
float load_cap,
float related_out_cap,
bool pocv_enabled,
int digits) const override;
float driveResistance(const LibertyCell *cell,
const Pvt *pvt) const override;
protected:
void setIsScaled(bool is_scaled) override;
float intrinsic_;
float resistance_;
};
class CheckLinearModel : public CheckTimingModel
{
public:
explicit CheckLinearModel(float intrinsic);
void checkDelay(const LibertyCell *cell,
const Pvt *pvt,
float from_slew,
float to_slew,
float related_out_cap,
bool pocv_enabled,
// Return values.
ArcDelay &margin) const override;
string reportCheckDelay(const LibertyCell *cell,
const Pvt *pvt,
float from_slew,
const char *from_slew_annotation,
float to_slew,
float related_out_cap,
bool pocv_enabled,
int digits) const override;
protected:
void setIsScaled(bool is_scaled) override;
float intrinsic_;
};
} // namespace