Started work on icetime

3 files changed, 253 insertions, 0 deletions

diff --git a/icetime/.gitignore b/icetime/.gitignore
new file mode 100644
index 0000000..a28ed80
--- /dev/null
+++ b/icetime/.gitignore
@@ -0,0 +1,3 @@
+icetime
+*.d
+*.o
diff --git a/icetime/Makefile b/icetime/Makefile
new file mode 100644
index 0000000..aead84a
--- /dev/null
+++ b/icetime/Makefile
@@ -0,0 +1,25 @@
+# CXX = clang
+CXX ?= clang
+LDLIBS = -lm -lstdc++
+CXXFLAGS = -MD -O0 -ggdb -Wall -std=c++11 -I/usr/local/include
+CC = $(CXX)
+DESTDIR = /usr/local
+
+all: icetime
+
+icetime: icetime.o
+
+install: all
+	cp icetime $(DESTDIR)/bin/icetime
+
+uninstall:
+	rm -f $(DESTDIR)/bin/icetime
+
+clean:
+	rm -f icetime
+	rm -f *.o *.d
+
+-include *.d
+
+.PHONY: all install uninstall clean
+
diff --git a/icetime/icetime.cc b/icetime/icetime.cc
new file mode 100644
index 0000000..61a63ed
--- /dev/null
+++ b/icetime/icetime.cc
@@ -0,0 +1,225 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <string.h> 
+#include <string>
+#include <vector>
+#include <map>
+#include <set>
+
+FILE *fin, *fout;
+
+std::string config_device;
+std::vector<std::vector<std::string>> config_tile_type;
+std::vector<std::vector<std::vector<std::vector<bool>>>> config_bits;
+
+struct net_segment_name
+{
+	int tile_x, tile_y;
+	std::string segment_name;
+
+	net_segment_name(int x, int y, std::string n) :
+		tile_x(x), tile_y(y), segment_name(n) { }
+	
+	bool operator<(const net_segment_name &other) const {
+		if (tile_x != other.tile_x)
+			return tile_x < other.tile_x;
+		if (tile_y != other.tile_y)
+			return tile_y < other.tile_y;
+		return segment_name < other.segment_name;
+	}
+};
+
+std::map<net_segment_name, int> segment_to_net;
+std::vector<std::set<net_segment_name>> net_to_segments;
+std::map<int, std::set<int>> net_buffers, net_rbuffers, net_routing;
+std::set<int> used_nets;
+
+void read_chipdb()
+{
+	char buffer[1024];
+	snprintf(buffer, 1024, "/usr/local/share/icebox/chipdb-%s.txt", config_device.c_str());
+
+	FILE *fdb = fopen(buffer, "r");
+	if (fdb == nullptr) {
+		perror("Can't open chipdb file");
+		exit(1);
+	}
+
+
+	std::string mode;
+	int current_net = -1;
+	std::string thiscfg;
+
+	while (fgets(buffer, 1024, fdb))
+	{
+		if (buffer[0] == '#')
+			continue;
+
+		const char *tok = strtok(buffer, " \t\r\n");
+		if (tok == nullptr)
+			continue;
+
+		if (tok[0] == '.')
+		{
+			mode = tok;
+
+			if (mode == ".net")
+			{
+				current_net = atoi(strtok(nullptr, " \t\r\n"));
+				if (current_net >= int(net_to_segments.size()))
+					net_to_segments.resize(current_net+1);
+			}
+
+			if (mode == ".buffer" || mode == ".routing")
+			{
+				int tile_x = atoi(strtok(nullptr, " \t\r\n"));
+				int tile_y = atoi(strtok(nullptr, " \t\r\n"));
+				current_net = atoi(strtok(nullptr, " \t\r\n"));
+
+				thiscfg = "";
+				while ((tok = strtok(nullptr, " \t\r\n")) != nullptr) {
+					int bit_row, bit_col, rc;
+					rc = sscanf(tok, "B%d[%d]", &bit_row, &bit_col);
+					assert(rc == 2);
+					thiscfg.push_back(config_bits[tile_x][tile_y][bit_row][bit_col] ? '1' : '0');
+				}
+			}
+
+			continue;
+		}
+
+		if (mode == ".net") {
+			int tile_x = atoi(tok);
+			int tile_y = atoi(strtok(nullptr, " \t\r\n"));
+			std::string segment_name = strtok(nullptr, " \t\r\n");
+			net_segment_name seg(tile_x, tile_y, segment_name);
+			segment_to_net[seg] = current_net;
+			net_to_segments[current_net].insert(seg);
+		}
+
+		if (mode == ".buffer" && !strcmp(tok, thiscfg.c_str())) {
+			int other_net = atoi(strtok(nullptr, " \t\r\n"));
+			net_rbuffers[current_net].insert(other_net);
+			net_buffers[other_net].insert(current_net);
+			used_nets.insert(current_net);
+			used_nets.insert(other_net);
+		}
+
+		if (mode == ".routing" && !strcmp(tok, thiscfg.c_str())) {
+			int other_net = atoi(strtok(nullptr, " \t\r\n"));
+			net_routing[current_net].insert(other_net);
+			net_routing[other_net].insert(current_net);
+			used_nets.insert(current_net);
+			used_nets.insert(other_net);
+		}
+	}
+
+	fclose(fdb);
+}
+
+void read_config()
+{
+	char buffer[128];
+	int tile_x, tile_y, line_nr = -1;
+
+	while (fgets(buffer, 128, fin))
+	{
+		if (buffer[0] == '.')
+		{
+			line_nr = -1;
+			const char *tok = strtok(buffer, " \t\r\n");
+
+			if (!strcmp(tok, ".device"))
+			{
+				config_device = strtok(nullptr, " \t\r\n");
+			} else
+			if (!strcmp(tok, ".io_tile") || !strcmp(tok, ".logic_tile") ||
+					!strcmp(tok, ".ramb_tile") || !strcmp(tok, ".ramt_tile"))
+			{
+				line_nr = 0;
+				tile_x = atoi(strtok(nullptr, " \t\r\n"));
+				tile_y = atoi(strtok(nullptr, " \t\r\n"));
+
+				if (tile_x >= int(config_tile_type.size())) {
+					config_tile_type.resize(tile_x+1);
+					config_bits.resize(tile_x+1);
+				}
+
+				if (tile_y >= int(config_tile_type.at(tile_x).size())) {
+					config_tile_type.at(tile_x).resize(tile_y+1);
+					config_bits.at(tile_x).resize(tile_y+1);
+				}
+
+				if (!strcmp(tok, ".io_tile"))
+					config_tile_type.at(tile_x).at(tile_y) = "io";
+				if (!strcmp(tok, ".logic_tile"))
+					config_tile_type.at(tile_x).at(tile_y) = "logic";
+				if (!strcmp(tok, ".ramb_tile"))
+					config_tile_type.at(tile_x).at(tile_y) = "ramb";
+				if (!strcmp(tok, ".ramt_tile"))
+					config_tile_type.at(tile_x).at(tile_y) = "ramt";
+			}
+		} else
+		if (line_nr >= 0)
+		{
+			assert(int(config_bits.at(tile_x).at(tile_y).size()) == line_nr);
+			config_bits.at(tile_x).at(tile_y).resize(line_nr+1);
+			for (int i = 0; buffer[i] == '0' || buffer[i] == '1'; i++)
+				config_bits.at(tile_x).at(tile_y).at(line_nr).push_back(buffer[i] == '1');
+			line_nr++;
+		}
+	}
+}
+
+void help(const char *cmd)
+{
+	printf("\n");
+	printf("Usage: %s [options] input.txt [output.v]\n", cmd);
+	printf("\n");
+	exit(1);
+}
+
+int main(int argc, char **argv)
+{
+	int opt;
+	while ((opt = getopt(argc, argv, "")) != -1)
+	{
+		switch (opt)
+		{
+		default:
+			help(argv[0]);
+		}
+	}
+
+	if (optind+1 == argc) {
+		fin = fopen(argv[optind], "r");
+		if (fin == nullptr) {
+			perror("Can't open input file");
+			exit(1);
+		}
+		fout = stdout;
+	} else
+	if (optind+2 == argc) {
+		fin = fopen(argv[optind], "r");
+		if (fin == nullptr) {
+			perror("Can't open input file");
+			exit(1);
+		}
+		fout = fopen(argv[optind+1], "w");
+		if (fout == nullptr) {
+			perror("Can't open output file");
+			exit(1);
+		}
+	} else
+		help(argv[0]);
+
+	printf("// Reading input .txt file..\n");
+	read_config();
+
+	printf("// Reading chipdb file..\n");
+	read_chipdb();
+
+	return 0;
+}