87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
|
// OpenSTA, Static Timing Analyzer
|
||
|
|
// Copyright (c) 2018, 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/>.
|
||
|
|
|
||
|
|
#ifndef STA_CHECK_SLEW_LIMIT_H
|
||
|
|
#define STA_CHECK_SLEW_LIMIT_H
|
||
|
|
|
||
|
|
#include "MinMax.hh"
|
||
|
|
#include "Transition.hh"
|
||
|
|
#include "NetworkClass.hh"
|
||
|
|
#include "GraphClass.hh"
|
||
|
|
#include "Delay.hh"
|
||
|
|
|
||
|
|
namespace sta {
|
||
|
|
|
||
|
|
class StaState;
|
||
|
|
class DcalcAnalysisPt;
|
||
|
|
|
||
|
|
class CheckSlewLimits
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
CheckSlewLimits(const StaState *sta);
|
||
|
|
void init(const MinMax *min_max);
|
||
|
|
// Requires init().
|
||
|
|
void checkSlews(const Pin *pin,
|
||
|
|
const MinMax *min_max,
|
||
|
|
// Return values.
|
||
|
|
// Corner is NULL for no slew limit.
|
||
|
|
const Corner *&corner,
|
||
|
|
const TransRiseFall *&tr,
|
||
|
|
Slew &slew,
|
||
|
|
float &limit,
|
||
|
|
float &slack) const;
|
||
|
|
PinSeq *pinSlewLimitViolations(const MinMax *min_max);
|
||
|
|
Pin *pinMinSlewLimitSlack(const MinMax *min_max);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
void checkSlew(Vertex *vertex,
|
||
|
|
float limit1,
|
||
|
|
const TransRiseFall *tr1,
|
||
|
|
const Corner *corner1,
|
||
|
|
const MinMax *min_max,
|
||
|
|
// Return values.
|
||
|
|
const Corner *&corner,
|
||
|
|
const TransRiseFall *&tr,
|
||
|
|
Slew &slew,
|
||
|
|
float &slack,
|
||
|
|
float &limit) const;
|
||
|
|
void findLimit(const Pin *pin,
|
||
|
|
const Vertex *vertex,
|
||
|
|
const TransRiseFall *tr,
|
||
|
|
const MinMax *min_max,
|
||
|
|
// Return values.
|
||
|
|
float &limit1,
|
||
|
|
bool &limit1_exists) const;
|
||
|
|
void pinSlewLimitViolations(Instance *inst,
|
||
|
|
const MinMax *min_max,
|
||
|
|
PinSeq *violators);
|
||
|
|
void pinMinSlewLimitSlack(Instance *inst,
|
||
|
|
const MinMax *min_max,
|
||
|
|
// Return values.
|
||
|
|
Pin *&min_slack_pin,
|
||
|
|
float &min_slack);
|
||
|
|
void clockDomains(const Vertex *vertex,
|
||
|
|
// Return value.
|
||
|
|
ClockSet &clks) const;
|
||
|
|
|
||
|
|
float top_limit_;
|
||
|
|
bool top_limit_exists_;
|
||
|
|
const StaState *sta_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
#endif
|