203 lines
8.6 KiB
C++
203 lines
8.6 KiB
C++
// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2025, 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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//
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// The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software.
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//
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// Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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//
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// This notice may not be removed or altered from any source distribution.
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#pragma once
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#include <mutex>
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#include "Map.hh"
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#include "Set.hh"
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#include "MinMax.hh"
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#include "Parasitics.hh"
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namespace sta {
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class ConcreteParasitic;
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class ConcreteParasiticNetwork;
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typedef Map<const Pin*, ConcreteParasitic**> ConcreteParasiticMap;
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typedef Map<const Net*, ConcreteParasiticNetwork**> ConcreteParasiticNetworkMap;
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// This class acts as a BUILDER for parasitics.
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class ConcreteParasitics : public Parasitics
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{
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public:
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ConcreteParasitics(StaState *sta);
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virtual ~ConcreteParasitics();
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bool haveParasitics() override;
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void clear() override;
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void deleteParasitics() override;
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void deleteParasitics(const Net *net,
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const ParasiticAnalysisPt *ap) override;
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void deleteParasitics(const Pin *drvr_pin,
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const ParasiticAnalysisPt *ap) override;
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void deleteParasitics(const Pin *drvr_pin);
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bool isReducedParasiticNetwork(const Parasitic *parasitic) const override;
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void setIsReducedParasiticNetwork(Parasitic *parasitic,
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bool is_reduced) override;
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float capacitance(const Parasitic *parasitic) const override;
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bool isPiElmore(const Parasitic *parasitic) const override;
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Parasitic *findPiElmore(const Pin *drvr_pin,
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const RiseFall *rf,
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const ParasiticAnalysisPt *ap) const override;
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Parasitic *makePiElmore(const Pin *drvr_pin,
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const RiseFall *rf,
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const ParasiticAnalysisPt *ap,
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float c2,
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float rpi,
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float c1) override;
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bool isPiModel(const Parasitic *parasitic) const override;
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void piModel(const Parasitic *parasitic,
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float &c2,
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float &rpi,
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float &c1) const override;
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void setPiModel(Parasitic *parasitic,
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float c2,
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float rpi,
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float c1) override;
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void findElmore(const Parasitic *parasitic,
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const Pin *load_pin,
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float &elmore,
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bool &exists) const override;
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void setElmore(Parasitic *parasitic,
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const Pin *load_pin,
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float elmore) override;
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bool isPiPoleResidue(const Parasitic* parasitic) const override;
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Parasitic *findPiPoleResidue(const Pin *drvr_pin,
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const RiseFall *rf,
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const ParasiticAnalysisPt *ap) const override;
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Parasitic *findPoleResidue(const Parasitic *parasitic,
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const Pin *load_pin) const override;
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Parasitic *makePiPoleResidue(const Pin *drvr_pin,
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const RiseFall *rf,
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const ParasiticAnalysisPt *ap,
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float c2, float rpi, float c1) override;
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void setPoleResidue(Parasitic *parasitic, const Pin *load_pin,
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ComplexFloatSeq *poles,
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ComplexFloatSeq *residues) override;
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bool isPoleResidue(const Parasitic* parasitic) const override;
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size_t poleResidueCount(const Parasitic *parasitic) const override;
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void poleResidue(const Parasitic *parasitic,
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int pole_index,
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ComplexFloat &pole,
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ComplexFloat &residue) const override;
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bool isParasiticNetwork(const Parasitic *parasitic) const override;
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Parasitic *findParasiticNetwork(const Net *net,
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const ParasiticAnalysisPt *ap) const override;
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Parasitic *findParasiticNetwork(const Pin *pin,
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const ParasiticAnalysisPt *ap) const override;
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Parasitic *makeParasiticNetwork(const Net *net,
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bool includes_pin_caps,
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const ParasiticAnalysisPt *ap) override;
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void deleteParasiticNetwork(const Net *net,
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const ParasiticAnalysisPt *ap) override;
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void deleteParasiticNetworks(const Net *net) override;
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const Net *net(const Parasitic *parasitic) const override;
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bool includesPinCaps(const Parasitic *parasitic) const override;
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ParasiticNode *findParasiticNode(Parasitic *parasitic,
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const Net *net,
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int id,
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const Network *network) const override;
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ParasiticNode *ensureParasiticNode(Parasitic *parasitic,
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const Net *net,
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int id,
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const Network *network) override;
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ParasiticNode *findParasiticNode(const Parasitic *parasitic,
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const Pin *pin) const override;
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ParasiticNode *ensureParasiticNode(Parasitic *parasitic,
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const Pin *pin,
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const Network *network) override;
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ParasiticNodeSeq nodes(const Parasitic *parasitic) const override;
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void incrCap(ParasiticNode *node,
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float cap) override;
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const char *name(const ParasiticNode *node) const override;
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const Pin *pin(const ParasiticNode *node) const override;
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const Net *net(const ParasiticNode *node,
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const Network *network) const override;
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unsigned netId(const ParasiticNode *node) const override;
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bool isExternal(const ParasiticNode *node) const override;
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float nodeGndCap(const ParasiticNode *node) const override;
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ParasiticResistorSeq resistors(const Parasitic *parasitic) const override;
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void makeResistor(Parasitic *parasitic,
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size_t id,
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float res,
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ParasiticNode *node1,
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ParasiticNode *node2) override;
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size_t id(const ParasiticResistor *resistor) const override;
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float value(const ParasiticResistor *resistor) const override;
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ParasiticNode *node1(const ParasiticResistor *resistor) const override;
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ParasiticNode *node2(const ParasiticResistor *resistor) const override;
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ParasiticCapacitorSeq capacitors(const Parasitic *parasitic) const override;
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void makeCapacitor(Parasitic *parasitic,
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size_t id,
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float cap,
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ParasiticNode *node1,
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ParasiticNode *node2) override;
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size_t id(const ParasiticCapacitor *capacitor) const override;
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float value(const ParasiticCapacitor *capacitor) const override;
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ParasiticNode *node1(const ParasiticCapacitor *capacitor) const override;
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ParasiticNode *node2(const ParasiticCapacitor *capacitor) const override;
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PinSet unannotatedLoads(const Parasitic *parasitic,
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const Pin *drvr_pin) const override;
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void disconnectPinBefore(const Pin *pin,
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const Network *network) override;
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void loadPinCapacitanceChanged(const Pin *pin) override;
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void deleteReducedParasitics(const Net *net,
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const ParasiticAnalysisPt *ap) override;
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void deleteDrvrReducedParasitics(const Pin *drvr_pin) override;
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protected:
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int parasiticAnalysisPtIndex(const ParasiticAnalysisPt *ap,
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const RiseFall *rf) const;
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Parasitic *ensureRspf(const Pin *drvr_pin);
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void makeAnalysisPtAfter();
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void deleteReducedParasitics(const Pin *pin);
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void deleteDrvrReducedParasitics(const Pin *drvr_pin,
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const ParasiticAnalysisPt *ap);
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// Driver pin to array of parasitics indexed by analysis pt index
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// and transition.
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ConcreteParasiticMap drvr_parasitic_map_;
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ConcreteParasiticNetworkMap parasitic_network_map_;
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mutable std::mutex lock_;
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friend class ConcretePiElmore;
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friend class ConcreteParasiticNode;
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friend class ConcreteParasiticNetwork;
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};
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} // namespace
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