2024-05-03 16:30:31 +08:00
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/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2023 gatecat <gatecat@ds0.me>
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* Copyright (C) 2023 Miodrag Milanovic <micko@yosyshq.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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*/
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#include <algorithm>
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#include <boost/optional.hpp>
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#include <iterator>
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#include <queue>
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#include <unordered_set>
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#include "chain_utils.h"
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#include "design_utils.h"
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#include "log.h"
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#include "nextpnr.h"
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#include "ng_ultra.h"
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#ifndef NG_ULTRA_PACK_H
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#define NG_ULTRA_PACK_H
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NEXTPNR_NAMESPACE_BEGIN
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struct NgUltraPacker
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{
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NgUltraPacker(Context *ctx, NgUltraImpl *uarch) : ctx(ctx), uarch(uarch) { h.init(ctx); };
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// Constants
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void pack_constants();
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void remove_constants();
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// LUTs & FFs
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void update_lut_init();
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void update_dffs();
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void pack_lut_dffs();
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void pack_dffs();
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void pack_cys();
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// IO
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void pack_iobs();
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void pack_ioms();
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2024-05-10 00:41:21 +08:00
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void promote_globals();
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2024-05-03 16:30:31 +08:00
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private:
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void set_lut_input_if_constant(CellInfo *cell, IdString input);
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void lut_to_fe(CellInfo *lut, CellInfo *fe, bool no_dff, Property lut_table);
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void dff_to_fe(CellInfo *dff, CellInfo *fe, bool pass_thru_lut);
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void exchange_if_constant(CellInfo *cell, IdString input1, IdString input2);
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void pack_cy_input_and_output(CellInfo *cy, IdString cluster, IdString in_port, IdString out_port, int placer, int &lut_only, int &lut_and_ff, int &dff_only);
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// General helper functions
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void flush_cells();
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// Cell creating
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std::unique_ptr<CellInfo> create_cell(IdString type, IdString name);
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CellInfo *create_cell_ptr(IdString type, IdString name);
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Context *ctx;
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NgUltraImpl *uarch;
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pool<IdString> packed_cells;
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std::vector<std::unique_ptr<CellInfo>> new_cells;
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HimbaechelHelpers h;
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};
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NEXTPNR_NAMESPACE_END
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#endif
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