1 files changed, 52 insertions, 0 deletions
diff --git a/ecp5/globals.cc b/ecp5/globals.cc
new file mode 100644
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+++ b/ecp5/globals.cc
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+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  David Shah <david@symbioticeda.com>
+ *
+ *  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.
+ *
+ */
+
+#include "nextpnr.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+class Ecp5GlobalRouter
+{
+  public:
+    Ecp5GlobalRouter(Context *ctx) : ctx(ctx){};
+
+    PipId find_tap_pip(WireId tile_glb)
+    {
+        std::string wireName = ctx->getWireBasename(tile_glb).str(ctx);
+        std::string glbName = wireName.substr(2);
+        TapDirection td = ctx->globalInfoAtLoc(tile_glb.location).tap_dir;
+        WireId tap_wire;
+        Location tap_loc;
+        tap_loc.x = ctx->globalInfoAtLoc(tile_glb.location).tap_col;
+        tap_loc.y = tile_glb.location.y;
+        if (td == TAP_DIR_LEFT) {
+            tap_wire = ctx->getWireByLocAndBasename(tap_loc, "L_" + glbName);
+        } else {
+            tap_wire = ctx->getWireByLocAndBasename(tap_loc, "R_" + glbName);
+        }
+        return *(ctx->getPipsUphill(tap_wire).begin());
+    }
+
+  private:
+    Context *ctx;
+};
+
+void route_ecp5_globals(Context *ctx);
+
+NEXTPNR_NAMESPACE_END