gowin: Let the placer know about global networks

Refactor in order to detect networks that will be routed in a special
mode earlier. This makes it possible to mark the source of such networks
as a global buffer, thereby removing their influence on element
placement.

In addition, timing classes are set for some cells.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>

1 files changed, 14 insertions, 0 deletions

diff --git a/gowin/arch.h b/gowin/arch.h
index c59f8eb3..cd43aa7a 100644
--- a/gowin/arch.h
+++ b/gowin/arch.h
@@ -31,6 +31,8 @@
 #include "nextpnr_namespaces.h"
 #include "nextpnr_types.h"
 
+#include "globals.h"
+
 NEXTPNR_NAMESPACE_BEGIN
 
 template <typename T> struct RelPtr
@@ -337,6 +339,11 @@ struct Arch : BaseArch<ArchRanges>
     void setDelayScaling(double scale, double offset);
 
     void addCellTimingClock(IdString cell, IdString port);
+    void addCellTimingIO(IdString cell, IdString port);
+    void addCellTimingCombIn(IdString cell, IdString port);
+    void addCellTimingCombOut(IdString cell, IdString port);
+    void addCellTimingRegIn(IdString cell, IdString port);
+    void addCellTimingRegOut(IdString cell, IdString port);
     void addCellTimingDelay(IdString cell, IdString fromPort, IdString toPort, DelayQuad delay);
     void addCellTimingSetupHold(IdString cell, IdString port, IdString clock, DelayPair setup, DelayPair hold);
     void addCellTimingClockToOut(IdString cell, IdString port, IdString clock, DelayQuad clktoq);
@@ -462,6 +469,13 @@ struct Arch : BaseArch<ArchRanges>
     bool haveBelType(int x, int y, IdString bel_type);
     bool allocate_longwire(NetInfo *ni, int lw_idx = -1);
     void fix_longwire_bels();
+    void pre_pack(Context *ctx);
+    void post_pack(Context *ctx);
+    void auto_longwires();
+
+    GowinGlobalRouter globals_router;
+    void mark_gowin_globals(Context *ctx);
+    void route_gowin_globals(Context *ctx);
 
     // chip db version
     unsigned int const chipdb_version = 1;