120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* NG-Ultra Architecture Implementation
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*
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* Copyright (C) 2024 YosysHQ GmbH
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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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void remove_not_used();
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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_xluts();
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void pack_lut_multi_dffs();
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void pack_dff_chains();
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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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void pack_rfs();
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void pack_cdcs();
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void pack_fifos();
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void pack_rams();
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void pack_dsps();
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// IO
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void pack_iobs();
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void pack_ioms();
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void pack_gcks();
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void pack_plls();
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void pack_wfgs();
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void pre_place();
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void insert_ioms();
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void insert_wfbs();
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// Post placement
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void duplicate_gck();
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void insert_bypass_gck();
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void insert_csc();
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TESTABLE_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 dff_rewrite(CellInfo *cell);
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void ddfr_rewrite(CellInfo *cell);
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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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void pack_xrf_input_and_output(CellInfo *cy, IdString cluster, IdString in_port, IdString out_port, ClusterPlacement placement, int &lut_only, int &lut_and_ff, int &dff_only);
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void connect_gnd_if_unconnected(CellInfo *cell, IdString input, bool warn);
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void disconnect_if_gnd(CellInfo *cell, IdString input);
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void insert_wfb(CellInfo *cell, IdString port);
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void mandatory_param(CellInfo *cell, IdString param);
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void disconnect_unused(CellInfo *cell, IdString port);
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void bind_attr_loc(CellInfo *cell, dict<IdString, Property> *attrs);
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BelId get_available_gck(int lobe, NetInfo *si1, NetInfo *si2);
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BelId getCSC(Loc l, int row);
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// General helper functions
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void flush_cells();
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IdString assign_wfg(IdString ckg, IdString ckg2, CellInfo *cell);
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void dsp_same_driver(IdString port, CellInfo *cell, CellInfo **target);
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void dsp_same_sink(IdString port, CellInfo *cell, CellInfo **target);
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int make_init_with_const_input(int init, int input, bool value);
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int memory_width(int config, bool ecc);
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int memory_addr_bits(int config,bool ecc);
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void constrain_location(CellInfo *cell);
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void extract_lowskew_signals(CellInfo *cell, dict<IdString,dict<IdString,std::vector<PortRef>>> &lowskew_signals);
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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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pool<IdString> global_lowskew;
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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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