icetime progress

icetime/Makefile

@@ -28,8 +28,8 @@ run0 run1 run2 run3 run4 run5 run6 run7 run8 run9: icetime
 	./icetime -P tq144 -p $(subst run,test,$@).pcf $(subst run,test,$@).txt $(subst run,test,$@)_out.v
 
 show0 show1 show2 show3 show4 show5 show6 show7 show8 show9:
-	# yosys -p 'equiv_mark; opt_clean -purge; show -color orange a:equiv_region!=0' $(subst show,test,$@).il
+	bash show.sh $(subst show,test,$@)
-	yosys -p 'equiv_purge; opt_clean -purge; show' $(subst show,test,$@).il
+	xdot $(subst show,test,$@).dot
 
 test: test0 test1 test2 test3 test4 test5 test6 test7 test8 test9
 

icetime/icetime.cc

@@ -12,7 +12,7 @@
 #include <map>
 #include <set>
 
-#define ZSPAN_HACK 1
+#define ZSPAN_HACK 0
 
 FILE *fin, *fout;
 
@@ -58,8 +58,7 @@ std::map<std::tuple<int, int, std::string>, int> x_y_name_net;
 std::map<std::tuple<int, int, int>, net_segment_t> x_y_net_segment;
 std::map<int, std::set<int>> net_buffers, net_rbuffers, net_routing;
 std::map<std::pair<int, int>, std::pair<int, int>> connection_pos;
-std::set<int> used_nets;
+std::set<int> used_nets, graph_nets;
-int graph_net = -1;
 
 std::set<net_segment_t> interconn_src, interconn_dst;
 std::set<int> no_interconn_net;
@@ -1045,16 +1044,8 @@ struct make_interconn_worker_t
 		}
 	}
 
-	void show_seg_tree(const net_segment_t &src)
+	void show_seg_tree(const net_segment_t &src, FILE *f)
 	{
-		FILE *f = fopen("icetime_graph.dot", "w");
-		if (f == nullptr) {
-			perror("Can't open 'icetime_graph.dot' for writing");
-			exit(1);
-		}
-
-		fprintf(f, "digraph \"icetime graph for net %d\" {\n", graph_net);
-		fprintf(f, "  rankdir = \"LR\";\n");
 		fprintf(f, "  subgraph cluster_net_%d {\n", src.net);
 		fprintf(f, "    label = \"net %d\";\n", src.net);
 
@@ -1064,13 +1055,10 @@ struct make_interconn_worker_t
 
 		for (auto &line : global_lines)
 			fprintf(f, "%s", line.c_str());
-
-		fprintf(f, "}\n");
-		fclose(f);
 	}
 };
 
-void make_interconn(const net_segment_t &src)
+void make_interconn(const net_segment_t &src, FILE *graph_f)
 {
 	make_interconn_worker_t worker;
 	worker.build_net_tree(src.net);
@@ -1103,8 +1091,11 @@ void make_interconn(const net_segment_t &src)
 		worker.create_cells(seg);
 	}
 
-	if (worker.net_tree.count(graph_net))
+	for (int n : graph_nets)
-		worker.show_seg_tree(src);
+		if (worker.net_tree.count(n)) {
+			worker.show_seg_tree(src, graph_f);
+			break;
+		}
 }
 
 void help(const char *cmd)
@@ -1138,7 +1129,7 @@ int main(int argc, char **argv)
 			selected_package = optarg;
 			break;
 		case 'g':
-			graph_net = atoi(optarg);
+			graph_nets.insert(atoi(optarg));
 			break;
 		default:
 			help(argv[0]);
@@ -1177,8 +1168,27 @@ int main(int argc, char **argv)
 	for (auto &seg : net_to_segments[net])
 		make_seg_cell(net, seg);
 
+	FILE *graph_f = nullptr;
+
+	if (!graph_nets.empty())
+	{
+		graph_f = fopen("icetime_graph.dot", "w");
+		if (graph_f == nullptr) {
+			perror("Can't open 'icetime_graph.dot' for writing");
+			exit(1);
+		}
+
+		fprintf(graph_f, "digraph \"icetime net-segment graph \" {\n");
+		fprintf(graph_f, "  rankdir = \"LR\";\n");
+	}
+
 	for (auto &seg : interconn_src)
-		make_interconn(seg);
+		make_interconn(seg, graph_f);
+
+	if (graph_f) {
+		fprintf(graph_f, "}\n");
+		fclose(graph_f);
+	}
 
 	fprintf(fout, "module chip (");
 	const char *io_sep = "";

icetime/mktest.py

@@ -55,7 +55,7 @@ os.rename("%s.v" % sys.argv[1], "%s_in.v" % sys.argv[1])
 
 with open("%s_ref.v" % sys.argv[1], "w") as f:
     for line in open("%s.vsb" % sys.argv[1], "r"):
-        zspan_hack = True
+        zspan_hack = False
 
         line = line.replace(" Span4Mux_s0_h ",   " Span4Mux_h0 "  if zspan_hack else " Span4Mux_h0 ")
         line = line.replace(" Span4Mux_s1_h ",   " Span4Mux_h0 "  if zspan_hack else " Span4Mux_h1 ")

icetime/show.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -ex
+
+yosys -p '
+	cd equiv
+	equiv_mark
+	select -write equiv_graph.segs w:seg_*_gate a:equiv_region!=0 %i
+	show -prefix equiv_graph -format dot a:equiv_region!=0 %co2 a:equiv_region!=0 %ci2
+' $1.il
+
+./icetime -P tq144 -p $1.pcf $1.txt $( sed 's,_gate$,,; s,.*_,-g ,;' < equiv_graph.segs ) > /dev/null
+
+{
+	egrep -v '^}' icetime_graph.dot
+	egrep -v '^(digraph|label=|})' equiv_graph.dot
+
+	for seg in $( sed 's,equiv/,,' equiv_graph.segs ); do
+		n=$( awk "/$seg/ { print \$1; }" equiv_graph.dot )
+		s=$( echo $seg | sed 's,_[0-9]*_gate$,,' )
+		echo "  $n:s -> $s:n [style=bold];"
+	done
+	echo "}"
+} > $1.dot
+
+rm -f equiv_graph.segs
+rm -f equiv_graph.dot
+rm -f icetime_graph.dot
+