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