1 files changed, 55 insertions, 0 deletions
diff --git a/common/place/place_common.h b/common/place/place_common.h
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+++ b/common/place/place_common.h
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+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  gatecat <gatecat@ds0.me>
+ *
+ *  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.
+ *
+ */
+
+#ifndef PLACE_COMMON_H
+#define PLACE_COMMON_H
+
+#include "nextpnr.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+typedef int64_t wirelen_t;
+
+enum class MetricType
+{
+    COST,
+    WIRELENGTH
+};
+
+// Return the wirelength of a net
+wirelen_t get_net_metric(const Context *ctx, const NetInfo *net, MetricType type, float &tns);
+
+// Return the wirelength of all nets connected to a cell
+wirelen_t get_cell_metric(const Context *ctx, const CellInfo *cell, MetricType type);
+
+// Return the wirelength of all nets connected to a cell, when the cell is at a given bel
+wirelen_t get_cell_metric_at_bel(const Context *ctx, CellInfo *cell, BelId bel, MetricType type);
+
+// Place a single cell in the lowest wirelength Bel available, optionally requiring validity check
+bool place_single_cell(Context *ctx, CellInfo *cell, bool require_legality);
+
+// Modify a design s.t. all relative placement constraints are satisfied
+bool legalise_relative_constraints(Context *ctx);
+
+// Get the total distance from satisfied constraints for a cell
+int get_constraints_distance(const Context *ctx, const CellInfo *cell);
+
+NEXTPNR_NAMESPACE_END
+
+#endif