119 lines
3.9 KiB
C++
119 lines
3.9 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@clifford.at>
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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 <iostream>
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#include <list>
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#include <map>
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#include <ostream>
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#include <set>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <vector>
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#include "design.h"
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#include "log.h"
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#include "place.h"
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void place_design(Design *design)
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{
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std::set<IdString> types_used;
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std::set<IdString>::iterator not_found, element;
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std::set<BelType> used_bels;
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// Initial constraints placer
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for (auto cell_entry : design->cells) {
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CellInfo *cell = cell_entry.second;
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auto loc = cell->attrs.find("BEL");
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if (loc != cell->attrs.end()) {
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std::string loc_name = loc->second;
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BelId bel = design->chip.getBelByName(IdString(loc_name));
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if (bel == BelId()) {
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log_error("No Bel named \'%s\' located for "
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"this chip (processing BEL attribute on \'%s\')\n",
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loc_name.c_str(), cell->name.c_str());
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}
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BelType bel_type = design->chip.getBelType(bel);
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if (bel_type != belTypeFromId(cell->type)) {
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log_error("Bel \'%s\' of type \'%s\' does not match cell "
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"\'%s\' of type \'%s\'",
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loc_name.c_str(), belTypeToId(bel_type).c_str(),
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cell->name.c_str(), cell->type.c_str());
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}
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cell->bel = bel;
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design->chip.bindBel(bel, cell->name);
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}
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}
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for (auto cell_entry : design->cells) {
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CellInfo *cell = cell_entry.second;
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// Ignore already placed cells
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if (cell->bel != BelId())
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continue;
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BelType bel_type;
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element = types_used.find(cell->type);
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if (element != types_used.end()) {
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continue;
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}
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bel_type = belTypeFromId(cell->type);
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if (bel_type == BelType()) {
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log_error("No Bel of type \'%s\' defined for "
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"this chip\n",
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cell->type.c_str());
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}
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types_used.insert(cell->type);
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}
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for (auto bel_type_name : types_used) {
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auto blist = design->chip.getBels();
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BelType bel_type = belTypeFromId(bel_type_name);
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auto bi = blist.begin();
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for (auto cell_entry : design->cells) {
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CellInfo *cell = cell_entry.second;
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// Ignore already placed cells
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if (cell->bel != BelId())
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continue;
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// Only place one type of Bel at a time
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if (cell->type.compare(bel_type_name) != 0)
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continue;
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while ((bi != blist.end()) &&
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((design->chip.getBelType(*bi) != bel_type ||
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!design->chip.checkBelAvail(*bi))))
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bi++;
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if (bi == blist.end())
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log_error("Too many \'%s\' used in design\n",
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cell->type.c_str());
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cell->bel = *bi++;
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design->chip.bindBel(cell->bel, cell->name);
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// Back annotate location
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cell->attrs["BEL"] = design->chip.getBelName(cell->bel);
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}
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}
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}
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