Adding stubs for delay annotation and cell timing lookup

Signed-off-by: David Shah <davey1576@gmail.com>

3 files changed, 62 insertions, 5 deletions

diff --git a/common/nextpnr.h b/common/nextpnr.h
index c59b401e..5ccbf057 100644
--- a/common/nextpnr.h
+++ b/common/nextpnr.h
@@ -17,13 +17,13 @@
  *
  */
 
+#include <algorithm>
 #include <assert.h>
 #include <stdint.h>
 #include <string>
 #include <unordered_map>
 #include <unordered_set>
 #include <vector>
-#include <algorithm>
 
 #ifndef NEXTPNR_H
 #define NEXTPNR_H
@@ -196,12 +196,12 @@ struct CellInfo;
 
 enum PlaceStrength
 {
-    STRENGTH_NONE   = 0,
-    STRENGTH_WEAK   = 1,
+    STRENGTH_NONE = 0,
+    STRENGTH_WEAK = 1,
     STRENGTH_STRONG = 2,
-    STRENGTH_FIXED  = 3,
+    STRENGTH_FIXED = 3,
     STRENGTH_LOCKED = 4,
-    STRENGTH_USER   = 5
+    STRENGTH_USER = 5
 };
 
 struct PortRef
diff --git a/common/timing.cc b/common/timing.cc
new file mode 100644
index 00000000..352ca94a
--- /dev/null
+++ b/common/timing.cc
@@ -0,0 +1,29 @@
+/*
+ *  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 "timing.h"
+#include "log.h"
+#include <unordered_map>
+#include <utility>
+#include <algorithm>
+
+void assign_budget(Context *ctx, float default_clock = 12e6)
+{
+
+}
diff --git a/common/timing.h b/common/timing.h
new file mode 100644
index 00000000..da0cdd9c
--- /dev/null
+++ b/common/timing.h
@@ -0,0 +1,28 @@
+/*
+ *  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.
+ *
+ */
+
+#ifndef TIMING_H
+#define TIMING_H
+
+#include "nextpnr.h"
+
+// Assign "budget" values for all user ports in the design
+void assign_budget(Context *ctx, float default_clock = 12e6);
+
+#endif TIMING_H