58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2019 David Shah <david@symbioticeda.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* [[cite]] HeAP
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* Analytical Placement for Heterogeneous FPGAs, Marcel Gort and Jason H. Anderson
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* https://janders.eecg.utoronto.ca/pdfs/marcelfpl12.pdf
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*
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* [[cite]] SimPL
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* SimPL: An Effective Placement Algorithm, Myung-Chul Kim, Dong-Jin Lee and Igor L. Markov
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* http://www.ece.umich.edu/cse/awards/pdfs/iccad10-simpl.pdf
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*/
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#ifndef PLACER_HEAP_H
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#define PLACER_HEAP_H
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#include "log.h"
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#include "nextpnr.h"
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NEXTPNR_NAMESPACE_BEGIN
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struct PlacerHeapCfg
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{
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PlacerHeapCfg(Context *ctx);
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float alpha, beta;
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float criticalityExponent;
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float timingWeight;
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bool timing_driven;
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float solverTolerance;
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bool placeAllAtOnce;
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int hpwl_scale_x, hpwl_scale_y;
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int spread_scale_x, spread_scale_y;
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// These cell types will be randomly locked to prevent singular matrices
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std::unordered_set<IdString> ioBufTypes;
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// These cell types are part of the same unit (e.g. slices split into
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// components) so will always be spread together
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std::vector<std::unordered_set<IdString>> cellGroups;
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};
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extern bool placer_heap(Context *ctx, PlacerHeapCfg cfg);
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NEXTPNR_NAMESPACE_END
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#endif
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