Fixes for partial reconfig demo

Signed-off-by: David Shah <dave@ds0.me>

2 files changed, 46 insertions, 1 deletions

diff --git a/common/router1.cc b/common/router1.cc
index 02c817c7..f97cb89b 100644
--- a/common/router1.cc
+++ b/common/router1.cc
@@ -400,7 +400,7 @@ struct Router1
 
                 dst_to_arc[dst_wire] = arc;
 
-                if (net_info->wires.count(src_wire) == 0) {
+                if (net_info->wires.count(dst_wire) == 0) {
                     arc_queue_insert(arc, src_wire, dst_wire);
                     continue;
                 }
@@ -527,6 +527,18 @@ struct Router1
                             conflictWireNet = ctx->getConflictingWireNet(next_wire);
                             if (conflictWireNet == nullptr)
                                 continue;
+                            else {
+                                if (conflictWireNet->wires.count(next_wire) &&
+                                    conflictWireNet->wires.at(next_wire).strength > STRENGTH_STRONG)
+                                    continue;
+                            }
+                        } else {
+                            NetInfo *conflicting = ctx->getBoundWireNet(conflictWireWire);
+                            if (conflicting != nullptr) {
+                                if (conflicting->wires.count(conflictWireWire) &&
+                                    conflicting->wires.at(conflictWireWire).strength > STRENGTH_STRONG)
+                                    continue;
+                            }
                         }
                     }
 
@@ -538,6 +550,18 @@ struct Router1
                             conflictPipNet = ctx->getConflictingPipNet(pip);
                             if (conflictPipNet == nullptr)
                                 continue;
+                            else {
+                                if (conflictPipNet->wires.count(next_wire) &&
+                                    conflictPipNet->wires.at(next_wire).strength > STRENGTH_STRONG)
+                                    continue;
+                            }
+                        } else {
+                            NetInfo *conflicting = ctx->getBoundWireNet(conflictPipWire);
+                            if (conflicting != nullptr) {
+                                if (conflicting->wires.count(conflictPipWire) &&
+                                    conflicting->wires.at(conflictPipWire).strength > STRENGTH_STRONG)
+                                    continue;
+                            }
                         }
                     }
 
diff --git a/frontend/frontend_base.h b/frontend/frontend_base.h
index df562c9a..fa0e30b9 100644
--- a/frontend/frontend_base.h
+++ b/frontend/frontend_base.h
@@ -284,6 +284,7 @@ template <typename FrontendType> struct GenericFrontend
         }
         import_module_netnames(m, data);
         import_module_cells(m, data);
+        import_net_attrs(m, data);
         if (m.is_toplevel) {
             import_toplevel_ports(m, data);
             // Mark design as loaded through nextpnr
@@ -410,6 +411,26 @@ template <typename FrontendType> struct GenericFrontend
         });
     }
 
+    void import_net_attrs(HierModuleState &m, const mod_dat_t &data)
+    {
+        impl.foreach_netname(data, [&](const std::string &basename, const netname_dat_t &nn) {
+            const auto &bits = impl.get_net_bits(nn);
+            int width = impl.get_vector_length(bits);
+            for (int i = 0; i < width; i++) {
+                if (impl.is_vector_bit_constant(bits, i))
+                    continue;
+                int net_bit = impl.get_vector_bit_signal(bits, i);
+                int mapped_bit = m.net_by_idx(net_bit);
+                if (mapped_bit != -1) {
+                    NetInfo *ni = net_flatindex.at(mapped_bit);
+                    impl.foreach_attr(nn, [&](const std::string &name, const Property &value) {
+                        ni->attrs[ctx->id(name)] = value;
+                    });
+                }
+            }
+        });
+    }
+
     // Create a new constant net; given a hint for what the name should be and its value
     NetInfo *create_constant_net(HierModuleState &m, const std::string &name_hint, char constval)
     {