53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
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* Copyright (C) 2018 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, NeEGLIGENCE 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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*/
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#ifndef ICE40_ARCH_PLACE_H
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#define ICE40_ARCH_PLACE_H
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#include "nextpnr.h"
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// Architecure-specific placement functions
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NEXTPNR_NAMESPACE_BEGIN
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class PlaceValidityChecker
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{
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public:
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PlaceValidityChecker(Context *ctx);
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// Whether or not a given cell can be placed at a given Bel
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// This is not intended for Bel type checks, but finer-grained constraints
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// such as conflicting set/reset signals, etc
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bool isValidBelForCell(CellInfo *cell, BelId bel);
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// Return true whether all Bels at a given location are valid
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bool isBelLocationValid(BelId bel);
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private:
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bool logicCellsCompatible(const Context *ctx, const std::vector<const CellInfo *> &cells);
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Context *ctx;
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IdString id_icestorm_lc, id_sb_io, id_sb_gb;
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IdString id_cen, id_clk, id_sr;
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IdString id_i0, id_i1, id_i2, id_i3;
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IdString id_dff_en, id_neg_clk;
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};
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NEXTPNR_NAMESPACE_END
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#endif
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