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authorClifford Wolf <clifford@clifford.at>2013-03-23 10:58:14 +0100
committerClifford Wolf <clifford@clifford.at>2013-03-23 10:58:14 +0100
commit80aefb3eaaf59b2c4a8579d29b30de2c821ec32a (patch)
tree4177b7cf2ec4686563bd0dce9d3396569cc410cc /backends/intersynth
parent47325fb2710952ea23b1c097060335dd096bd492 (diff)
Added intersynth backend
Diffstat (limited to 'backends/intersynth')
-rw-r--r--backends/intersynth/Makefile.inc3
-rw-r--r--backends/intersynth/intersynth.cc138
2 files changed, 141 insertions, 0 deletions
diff --git a/backends/intersynth/Makefile.inc b/backends/intersynth/Makefile.inc
new file mode 100644
index 00000000..85df1b39
--- /dev/null
+++ b/backends/intersynth/Makefile.inc
@@ -0,0 +1,3 @@
+
+OBJS += backends/intersynth/intersynth.o
+
diff --git a/backends/intersynth/intersynth.cc b/backends/intersynth/intersynth.cc
new file mode 100644
index 00000000..d8f92b62
--- /dev/null
+++ b/backends/intersynth/intersynth.cc
@@ -0,0 +1,138 @@
+/*
+ * yosys -- Yosys Open SYnthesis Suite
+ *
+ * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
+ *
+ * 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 "kernel/rtlil.h"
+#include "kernel/register.h"
+#include "kernel/sigtools.h"
+#include "kernel/celltypes.h"
+#include "kernel/log.h"
+#include <string>
+#include <assert.h>
+
+
+static std::string netname(std::set<std::string> &conntypes_code, std::set<std::string> &celltypes_code, std::set<std::string> &constcells_code, RTLIL::SigSpec sig)
+{
+ sig.optimize();
+
+ if (sig.chunks.size() != 1)
+error:
+ log_error("Can't export composite or non-word-wide signal %s.\n", log_signal(sig));
+
+ conntypes_code.insert(stringf("conntype b%d %d 2 %d\n", sig.width, sig.width, sig.width));
+
+ if (sig.chunks[0].wire == NULL) {
+ celltypes_code.insert(stringf("celltype const%d b%d *CONST cfg:%d VALUE\n", sig.width, sig.width));
+ constcells_code.insert(stringf("node const%d_0x%x const%d CONST const%d_%x VALUE 0x%x\n", sig.width, sig.chunks[0].data.as_int(),
+ sig.width, sig.width, sig.chunks[0].data.as_int(), sig.chunks[0].data.as_int()));
+ return stringf("const%d_0x%x", sig.width, sig.chunks[0].data.as_int());
+ }
+
+ if (sig.chunks[0].offset != 0 || sig.width != sig.chunks[0].wire->width)
+ goto error;
+
+ return unescape_id(sig.chunks[0].wire->name);
+}
+
+struct IntersynthBackend : public Backend {
+ IntersynthBackend() : Backend("intersynth", "write design to InterSynth netlist file") { }
+ virtual void help()
+ {
+ // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
+ log("\n");
+ log(" write_intersynth [filename]\n");
+ log("\n");
+ log("Write the current design to an 'intersynth' netlist file. InterSynth is\n");
+ log("a tool for Coarse-Grain Example-Driven Interconnect Synthesis.\n");
+ log("\n");
+ log("http://www.clifford.at/intersynth/\n");
+ log("\n");
+ }
+ virtual void execute(FILE *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design)
+ {
+ log_header("Executing INTERSYNTH backend.\n");
+ extra_args(f, filename, args, 1);
+ log("Output filename: %s\n", filename.c_str());
+
+ std::set<std::string> conntypes_code, celltypes_code;
+ std::string netlists_code;
+ CellTypes ct(design);
+
+ for (auto module_it : design->modules)
+ {
+ RTLIL::Module *module = module_it.second;
+ SigMap sigmap(module);
+
+ if (module->memories.size() == 0 && module->processes.size() == 0 && module->cells.size() == 0)
+ continue;
+
+ log("Generating netlist %s.\n", id2cstr(module->name));
+
+ if (module->memories.size() != 0 || module->processes.size() != 0)
+ log_error("Can't generate a netlist for a module with unprocessed memories or processes!\n");
+
+ std::set<std::string> constcells_code;
+ netlists_code += stringf("netlist %s\n", id2cstr(module->name));
+
+ for (auto wire_it : module->wires) {
+ RTLIL::Wire *wire = wire_it.second;
+ if (wire->port_input || wire->port_output) {
+ celltypes_code.insert(stringf("celltype !%s b%d %sPORT\n" "%s %s %d %s PORT\n",
+ id2cstr(wire->name), wire->width, wire->port_input ? "*" : "",
+ wire->port_input ? "input" : "output", id2cstr(wire->name), wire->width, id2cstr(wire->name)));
+ netlists_code += stringf("node %s %s PORT %s\n", id2cstr(wire->name), id2cstr(wire->name),
+ netname(conntypes_code, celltypes_code, constcells_code, sigmap(wire)).c_str());
+ }
+ }
+
+ for (auto cell_it : module->cells)
+ {
+ RTLIL::Cell *cell = cell_it.second;
+ std::string celltype_code, node_code;
+
+ celltype_code = stringf("celltype %s", id2cstr(cell->type));
+ node_code = stringf("node %s %s", id2cstr(cell->name), id2cstr(cell->type));
+ for (auto &port : cell->connections) {
+ RTLIL::SigSpec sig = sigmap(port.second);
+ conntypes_code.insert(stringf("conntype b%d %d 2 %d\n", sig.width, sig.width, sig.width));
+ celltype_code += stringf(" b%d %s%s", sig.width, ct.cell_output(cell->type, port.first) ? "*" : "", id2cstr(port.first));
+ node_code += stringf(" %s %s", id2cstr(port.first), netname(conntypes_code, celltypes_code, constcells_code, sig).c_str());
+ }
+ for (auto &param : cell->parameters) {
+ celltype_code += stringf(" cfg:%d %s", int(param.second.bits.size()), id2cstr(param.first));
+ if (param.second.bits.size() != 32) {
+ node_code += stringf(" %s '", id2cstr(param.first));
+ for (int i = param.second.bits.size()-1; i >= 0; i--)
+ node_code += param.second.bits[i] == RTLIL::S1 ? "1" : "0";
+ } else
+ node_code += stringf(" %s 0x%x", id2cstr(param.first), param.second.as_int());
+ }
+
+ celltypes_code.insert(celltype_code + "\n");
+ netlists_code += node_code + "\n";
+ }
+ }
+
+ for (auto str : conntypes_code)
+ fprintf(f, "%s", str.c_str());
+ for (auto str : celltypes_code)
+ fprintf(f, "%s", str.c_str());
+ fprintf(f, "%s", netlists_code.c_str());
+ }
+} IntersynthBackend;
+