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yosys/backends/edif/edif.cc

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/*
* 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.
*
*/
// [[CITE]] EDIF Version 2 0 0 Grammar
// http://web.archive.org/web/20050730021644/http://www.edif.org/documentation/BNF_GRAMMAR/index.html
#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>
#define EDIF_NAME(_id) edif_names(RTLIL::unescape_id(_id)).c_str()
namespace
{
struct EdifNames
{
int counter;
std::set<std::string> generated_names, used_names;
std::map<std::string, std::string> name_map;
EdifNames() : counter(1) { }
std::string operator()(std::string id)
{
if (name_map.count(id) > 0)
return name_map.at(id);
if (generated_names.count(id) > 0)
goto do_rename;
if (id == "GND" || id == "VCC")
goto do_rename;
for (size_t i = 0; i < id.size(); i++) {
if ('A' <= id[i] && id[i] <= 'Z')
continue;
if ('a' <= id[i] && id[i] <= 'z')
continue;
if ('0' <= id[i] && id[i] <= '9' && i > 0)
continue;
if (id[i] == '_' && i > 0 && i != id.size()-1)
continue;
goto do_rename;
}
used_names.insert(id);
return id;
do_rename:;
std::string gen_name;
while (1) {
gen_name = stringf("id%05d", counter++);
if (generated_names.count(gen_name) == 0 &&
used_names.count(gen_name) == 0)
break;
}
generated_names.insert(gen_name);
name_map[id] = gen_name;
return stringf("(rename %s \"%s\")", gen_name.c_str(), id.c_str());
}
};
}
struct EdifBackend : public Backend {
EdifBackend() : Backend("edif", "write design to EDIF netlist file") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" write_edif [options] [filename]\n");
log("\n");
log("Write the current design to an EDIF netlist file.\n");
log("\n");
log(" -top top_module\n");
log(" set the specified module as design top module\n");
log("\n");
log("Unfortunately there are different \"flavors\" of the EDIF file format. This\n");
log("command generates EDIF files for the Xilinx place&route tools. It might be\n");
log("necessary to make small modifications to this command when a different tool\n");
log("is targeted.\n");
log("\n");
}
virtual void execute(FILE *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design)
{
log_header("Executing EDIF backend.\n");
std::string top_module_name;
std::map<std::string, std::set<std::string>> lib_cell_ports;
CellTypes ct(design);
EdifNames edif_names;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++)
{
if (args[argidx] == "-top" && argidx+1 < args.size()) {
top_module_name = args[++argidx];
continue;
}
break;
}
extra_args(f, filename, args, argidx);
if (top_module_name.empty())
for (auto & mod_it:design->modules)
if (mod_it.second->get_bool_attribute("\\top"))
top_module_name = mod_it.first;
for (auto module_it : design->modules)
{
RTLIL::Module *module = module_it.second;
if (module->get_bool_attribute("\\blackbox"))
continue;
if (top_module_name.empty())
top_module_name = module->name;
if (module->processes.size() != 0)
log_error("Found unmapped processes in module %s: unmapped processes are not supported in EDIF backend!\n", RTLIL::id2cstr(module->name));
if (module->memories.size() != 0)
log_error("Found munmapped emories in module %s: unmapped memories are not supported in EDIF backend!\n", RTLIL::id2cstr(module->name));
for (auto cell_it : module->cells)
{
RTLIL::Cell *cell = cell_it.second;
if (!design->modules.count(cell->type) || design->modules.at(cell->type)->get_bool_attribute("\\blackbox")) {
lib_cell_ports[cell->type];
for (auto p : cell->connections) {
if (p.second.width > 1)
log_error("Found multi-bit port %s on library cell %s.%s (%s): not supported in EDIF backend!\n",
RTLIL::id2cstr(p.first), RTLIL::id2cstr(module->name), RTLIL::id2cstr(cell->name), RTLIL::id2cstr(cell->type));
lib_cell_ports[cell->type].insert(p.first);
}
}
}
}
if (top_module_name.empty())
log_error("No module found in design!\n");
fprintf(f, "(edif %s\n", EDIF_NAME(top_module_name));
fprintf(f, " (edifVersion 2 0 0)\n");
fprintf(f, " (edifLevel 0)\n");
fprintf(f, " (keywordMap (keywordLevel 0))\n");
fprintf(f, " (comment \"Generated by %s\")\n", yosys_version_str);
fprintf(f, " (external LIB\n");
fprintf(f, " (edifLevel 0)\n");
fprintf(f, " (technology (numberDefinition))\n");
fprintf(f, " (cell GND\n");
fprintf(f, " (cellType GENERIC)\n");
fprintf(f, " (view VIEW_NETLIST\n");
fprintf(f, " (viewType NETLIST)\n");
fprintf(f, " (interface (port G (direction OUTPUT)))\n");
fprintf(f, " )\n");
fprintf(f, " )\n");
fprintf(f, " (cell VCC\n");
fprintf(f, " (cellType GENERIC)\n");
fprintf(f, " (view VIEW_NETLIST\n");
fprintf(f, " (viewType NETLIST)\n");
fprintf(f, " (interface (port P (direction OUTPUT)))\n");
fprintf(f, " )\n");
fprintf(f, " )\n");
for (auto &cell_it : lib_cell_ports) {
fprintf(f, " (cell %s\n", EDIF_NAME(cell_it.first));
fprintf(f, " (cellType GENERIC)\n");
fprintf(f, " (view VIEW_NETLIST\n");
fprintf(f, " (viewType NETLIST)\n");
fprintf(f, " (interface\n");
for (auto &port_it : cell_it.second) {
const char *dir = "INOUT";
if (ct.cell_known(cell_it.first)) {
if (!ct.cell_output(cell_it.first, port_it))
dir = "INPUT";
else if (!ct.cell_input(cell_it.first, port_it))
dir = "OUTPUT";
}
fprintf(f, " (port %s (direction %s))\n", EDIF_NAME(port_it), dir);
}
fprintf(f, " )\n");
fprintf(f, " )\n");
fprintf(f, " )\n");
}
fprintf(f, " )\n");
std::vector<RTLIL::Module*> sorted_modules;
// extract module dependencies
std::map<RTLIL::Module*, std::set<RTLIL::Module*>> module_deps;
for (auto &mod_it : design->modules) {
module_deps[mod_it.second] = std::set<RTLIL::Module*>();
for (auto &cell_it : mod_it.second->cells)
if (design->modules.count(cell_it.second->type) > 0)
module_deps[mod_it.second].insert(design->modules.at(cell_it.second->type));
}
// simple good-enough topological sort
// (O(n*m) on n elements and depth m)
while (module_deps.size() > 0) {
size_t sorted_modules_idx = sorted_modules.size();
for (auto &it : module_deps) {
for (auto &dep : it.second)
if (module_deps.count(dep) > 0)
goto not_ready_yet;
// log("Next in topological sort: %s\n", RTLIL::id2cstr(it.first->name));
sorted_modules.push_back(it.first);
not_ready_yet:;
}
if (sorted_modules_idx == sorted_modules.size())
log_error("Cyclic dependency between modules found! Cycle includes module %s.\n", RTLIL::id2cstr(module_deps.begin()->first->name));
while (sorted_modules_idx < sorted_modules.size())
module_deps.erase(sorted_modules.at(sorted_modules_idx++));
}
fprintf(f, " (library DESIGN\n");
fprintf(f, " (edifLevel 0)\n");
fprintf(f, " (technology (numberDefinition))\n");
for (auto module : sorted_modules)
{
if (module->get_bool_attribute("\\blackbox"))
continue;
SigMap sigmap(module);
std::map<RTLIL::SigSpec, std::set<std::string>> net_join_db;
fprintf(f, " (cell %s\n", EDIF_NAME(module->name));
fprintf(f, " (cellType GENERIC)\n");
fprintf(f, " (view VIEW_NETLIST\n");
fprintf(f, " (viewType NETLIST)\n");
fprintf(f, " (interface\n");
for (auto &wire_it : module->wires) {
RTLIL::Wire *wire = wire_it.second;
if (wire->port_id == 0)
continue;
const char *dir = "INOUT";
if (!wire->port_output)
dir = "INPUT";
else if (!wire->port_input)
dir = "OUTPUT";
if (wire->width == 1) {
fprintf(f, " (port %s (direction %s))\n", EDIF_NAME(wire->name), dir);
RTLIL::SigSpec sig = sigmap(RTLIL::SigSpec(wire));
net_join_db[sig].insert(stringf("(portRef %s)", EDIF_NAME(wire->name)));
} else {
fprintf(f, " (port (array %s %d) (direction %s))\n", EDIF_NAME(wire->name), wire->width, dir);
for (int i = 0; i < wire->width; i++) {
RTLIL::SigSpec sig = sigmap(RTLIL::SigSpec(wire, 1, i));
net_join_db[sig].insert(stringf("(portRef (member %s %d))", EDIF_NAME(wire->name), i));
}
}
}
fprintf(f, " )\n");
fprintf(f, " (contents\n");
fprintf(f, " (instance GND (viewRef VIEW_NETLIST (cellRef GND (libraryRef LIB))))\n");
fprintf(f, " (instance VCC (viewRef VIEW_NETLIST (cellRef VCC (libraryRef LIB))))\n");
for (auto &cell_it : module->cells) {
RTLIL::Cell *cell = cell_it.second;
fprintf(f, " (instance %s\n", EDIF_NAME(cell->name));
fprintf(f, " (viewRef VIEW_NETLIST (cellRef %s%s))", EDIF_NAME(cell->type),
lib_cell_ports.count(cell->type) > 0 ? " (libraryRef LIB)" : "");
for (auto &p : cell->parameters)
if ((p.second.flags & RTLIL::CONST_FLAG_STRING) != 0)
fprintf(f, "\n (property %s (string \"%s\"))", EDIF_NAME(p.first), p.second.decode_string().c_str());
else if (p.second.bits.size() <= 32 && RTLIL::SigSpec(p.second).is_fully_def())
fprintf(f, "\n (property %s (integer %u))", EDIF_NAME(p.first), p.second.as_int());
else {
std::string hex_string = "";
for (size_t i = 0; i < p.second.bits.size(); i += 4) {
int digit_value = 0;
if (i+0 < p.second.bits.size() && p.second.bits.at(i+0) == RTLIL::State::S1) digit_value |= 1;
if (i+1 < p.second.bits.size() && p.second.bits.at(i+1) == RTLIL::State::S1) digit_value |= 2;
if (i+2 < p.second.bits.size() && p.second.bits.at(i+2) == RTLIL::State::S1) digit_value |= 4;
if (i+3 < p.second.bits.size() && p.second.bits.at(i+3) == RTLIL::State::S1) digit_value |= 8;
char digit_str[2] = { "0123456789abcdef"[digit_value], 0 };
hex_string = std::string(digit_str) + hex_string;
}
fprintf(f, "\n (property %s (string \"%s\"))", EDIF_NAME(p.first), hex_string.c_str());
}
fprintf(f, ")\n");
for (auto &p : cell->connections) {
RTLIL::SigSpec sig = sigmap(p.second);
sig.expand();
for (int i = 0; i < sig.width; i++) {
RTLIL::SigSpec sigbit(sig.chunks.at(i));
std::string portname = sig.width > 1 ? stringf("%s[%d]", RTLIL::id2cstr(p.first), i) : RTLIL::id2cstr(p.first);
net_join_db[sigbit].insert(stringf("(portRef %s (instanceRef %s))", edif_names(portname).c_str(), EDIF_NAME(cell->name)));
}
}
}
for (auto &it : net_join_db) {
RTLIL::SigSpec sig = it.first;
sig.optimize();
log_assert(sig.width == 1);
if (sig.chunks.at(0).wire == NULL) {
if (sig.chunks.at(0).data.bits.at(0) != RTLIL::State::S0 && sig.chunks.at(0).data.bits.at(0) != RTLIL::State::S1)
continue;
}
std::string netname = log_signal(sig);
for (size_t i = 0; i < netname.size(); i++)
if (netname[i] == ' ' || netname[i] == '\\')
netname.erase(netname.begin() + i--);
fprintf(f, " (net %s (joined\n", edif_names(netname).c_str());
for (auto &ref : it.second)
fprintf(f, " %s\n", ref.c_str());
if (sig.chunks.at(0).wire == NULL) {
if (sig.chunks.at(0).data.bits.at(0) == RTLIL::State::S0)
fprintf(f, " (portRef G (instanceRef GND))\n");
if (sig.chunks.at(0).data.bits.at(0) == RTLIL::State::S1)
fprintf(f, " (portRef P (instanceRef VCC))\n");
}
fprintf(f, " ))\n");
}
fprintf(f, " )\n");
fprintf(f, " )\n");
fprintf(f, " )\n");
}
fprintf(f, " )\n");
fprintf(f, " (design %s\n", EDIF_NAME(top_module_name));
fprintf(f, " (cellRef %s (libraryRef DESIGN))\n", EDIF_NAME(top_module_name));
fprintf(f, " )\n");
fprintf(f, ")\n");
}
} EdifBackend;
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