mirror of https://github.com/YosysHQ/yosys.git
Added proper TECHMAP_FAIL support and added support for the celltype attribute in the map file
This commit is contained in:
Clifford Wolf
parent
7bfc7b61a8
commit
8edf4f378a
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@ -47,8 +47,93 @@ static void apply_prefix(std::string prefix, RTLIL::SigSpec &sig, RTLIL::Module
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}
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std::map<std::pair<RTLIL::IdString, std::map<RTLIL::IdString, RTLIL::Const>>, RTLIL::Module*> techmap_cache;
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std::map<RTLIL::Module*, bool> techmap_fail_cache;
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static bool techmap_module(RTLIL::Design *design, RTLIL::Module *module, RTLIL::Design *map)
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static bool techmap_fail_check(RTLIL::Module *module)
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{
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if (module == NULL)
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return false;
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if (techmap_fail_cache.count(module) > 0)
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return techmap_fail_cache.at(module);
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for (auto &it : module->wires) {
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std::string name = it.first;
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if (name == "\\TECHMAP_FAIL")
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return techmap_fail_cache[module] = true;
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if (name.size() > 13 && name[0] == '\\' && name.substr(name.size()-13) == ".TECHMAP_FAIL")
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return techmap_fail_cache[module] = true;
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}
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return techmap_fail_cache[module] = false;
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}
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static void techmap_module_worker(RTLIL::Design *design, RTLIL::Module *module, RTLIL::Cell *cell, RTLIL::Module *tpl)
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{
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log("Mapping `%s.%s' using `%s'.\n", RTLIL::id2cstr(module->name), RTLIL::id2cstr(cell->name), RTLIL::id2cstr(tpl->name));
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if (tpl->memories.size() != 0)
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log_error("Technology map yielded memories -> this is not supported.");
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if (tpl->processes.size() != 0)
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log_error("Technology map yielded processes -> this is not supported.");
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for (auto &it : tpl->wires) {
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RTLIL::Wire *w = new RTLIL::Wire(*it.second);
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apply_prefix(cell->name, w->name);
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w->port_input = false;
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w->port_output = false;
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w->port_id = 0;
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module->wires[w->name] = w;
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design->select(module, w);
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}
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for (auto &it : tpl->cells) {
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RTLIL::Cell *c = new RTLIL::Cell(*it.second);
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if (c->type.substr(0, 2) == "\\$")
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c->type = c->type.substr(1);
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apply_prefix(cell->name, c->name);
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for (auto &it2 : c->connections)
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apply_prefix(cell->name, it2.second, module);
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module->cells[c->name] = c;
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design->select(module, c);
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}
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for (auto &it : tpl->connections) {
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RTLIL::SigSig c = it;
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apply_prefix(cell->name, c.first, module);
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apply_prefix(cell->name, c.second, module);
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module->connections.push_back(c);
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}
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for (auto &it : cell->connections) {
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assert(tpl->wires.count(it.first));
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assert(tpl->wires[it.first]->port_id > 0);
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RTLIL::Wire *w = tpl->wires[it.first];
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RTLIL::SigSig c;
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if (w->port_output) {
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c.first = it.second;
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c.second = RTLIL::SigSpec(w);
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apply_prefix(cell->name, c.second, module);
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} else {
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c.first = RTLIL::SigSpec(w);
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c.second = it.second;
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apply_prefix(cell->name, c.first, module);
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}
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if (c.second.width > c.first.width)
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c.second.remove(c.first.width, c.second.width - c.first.width);
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if (c.second.width < c.first.width)
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c.second.append(RTLIL::SigSpec(RTLIL::State::S0, c.first.width - c.second.width));
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assert(c.first.width == c.second.width);
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module->connections.push_back(c);
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}
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module->cells.erase(cell->name);
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delete cell;
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}
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static bool techmap_module(RTLIL::Design *design, RTLIL::Module *module, RTLIL::Design *map, std::set<RTLIL::Cell*> &handled_cells,
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const std::map<RTLIL::IdString, std::set<RTLIL::IdString>> &celltypeMap)
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{
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if (!design->selected(module))
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return false;
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@ -67,98 +152,41 @@ static bool techmap_module(RTLIL::Design *design, RTLIL::Module *module, RTLIL::
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RTLIL::Cell *cell = module->cells[cell_name];
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if (!design->selected(module, cell))
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if (!design->selected(module, cell) || handled_cells.count(cell) > 0)
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continue;
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if (map->modules.count(cell->type) == 0)
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if (celltypeMap.count(cell->type) == 0)
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continue;
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RTLIL::Module *tpl = map->modules[cell->type];
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std::pair<RTLIL::IdString, std::map<RTLIL::IdString, RTLIL::Const>> key(cell->type, cell->parameters);
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if (techmap_cache.count(key) > 0) {
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tpl = techmap_cache[key];
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} else {
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for (auto &tpl_name : celltypeMap.at(cell->type))
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{
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RTLIL::Module *tpl = map->modules[tpl_name];
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std::pair<RTLIL::IdString, std::map<RTLIL::IdString, RTLIL::Const>> key(cell->type, cell->parameters);
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std::string derived_name = cell->type;
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if (cell->parameters.size() != 0) {
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derived_name = tpl->derive(map, cell->parameters);
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tpl = map->modules[derived_name];
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log_header("Continuing TECHMAP pass.\n");
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}
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for (auto &cit : tpl->cells)
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if (cit.second->type == "\\TECHMAP_FAILED") {
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log("Not using module `%s' from techmap as it contains a TECHMAP_FAILED marker cell.\n", derived_name.c_str());
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tpl = NULL;
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break;
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}
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techmap_cache[key] = tpl;
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}
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if (tpl == NULL)
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goto next_cell;
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log("Mapping `%s.%s' using `%s'.\n", module->name.c_str(), cell_name.c_str(), tpl->name.c_str());
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if (tpl->memories.size() != 0)
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log_error("Technology map yielded memories -> this is not supported.");
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if (tpl->processes.size() != 0)
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log_error("Technology map yielded processes -> this is not supported.");
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for (auto &it : tpl->wires) {
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RTLIL::Wire *w = new RTLIL::Wire(*it.second);
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apply_prefix(cell_name, w->name);
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w->port_input = false;
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w->port_output = false;
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w->port_id = 0;
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module->wires[w->name] = w;
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design->select(module, w);
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}
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for (auto &it : tpl->cells) {
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RTLIL::Cell *c = new RTLIL::Cell(*it.second);
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if (c->type.substr(0, 2) == "\\$")
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c->type = c->type.substr(1);
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apply_prefix(cell_name, c->name);
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for (auto &it2 : c->connections)
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apply_prefix(cell_name, it2.second, module);
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module->cells[c->name] = c;
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design->select(module, c);
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}
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for (auto &it : tpl->connections) {
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RTLIL::SigSig c = it;
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apply_prefix(cell_name, c.first, module);
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apply_prefix(cell_name, c.second, module);
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module->connections.push_back(c);
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}
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for (auto &it : cell->connections) {
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assert(tpl->wires.count(it.first));
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assert(tpl->wires[it.first]->port_id > 0);
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RTLIL::Wire *w = tpl->wires[it.first];
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RTLIL::SigSig c;
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if (w->port_output) {
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c.first = it.second;
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c.second = RTLIL::SigSpec(w);
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apply_prefix(cell_name, c.second, module);
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if (techmap_cache.count(key) > 0) {
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tpl = techmap_cache[key];
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} else {
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c.first = RTLIL::SigSpec(w);
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c.second = it.second;
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apply_prefix(cell_name, c.first, module);
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if (cell->parameters.size() != 0) {
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derived_name = tpl->derive(map, cell->parameters);
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tpl = map->modules[derived_name];
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log_header("Continuing TECHMAP pass.\n");
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}
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techmap_cache[key] = tpl;
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}
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if (c.second.width > c.first.width)
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c.second.remove(c.first.width, c.second.width - c.first.width);
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if (c.second.width < c.first.width)
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c.second.append(RTLIL::SigSpec(RTLIL::State::S0, c.first.width - c.second.width));
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assert(c.first.width == c.second.width);
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module->connections.push_back(c);
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if (techmap_fail_check(tpl)) {
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log("Not using module `%s' from techmap as it contains a TECHMAP_FAIL marker wire.\n", derived_name.c_str());
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continue;
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}
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techmap_module_worker(design, module, cell, tpl);
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did_something = true;
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cell = NULL;
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break;
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}
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delete cell;
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module->cells.erase(cell_name);
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did_something = true;
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next_cell:;
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handled_cells.insert(cell);
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}
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return did_something;
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@ -182,6 +210,13 @@ struct TechmapPass : public Pass {
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log(" transforms the internal RTL cells to the internal gate\n");
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log(" library.\n");
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log("\n");
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log("When a module in the map file has the 'celltype' attribute set, it will match\n");
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log("cells with a type that match the text value of this attribute.\n");
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log("\n");
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log("When a module in the map file contains a wire with the name 'TECHMAP_FAIL' (or\n");
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log("one matching '*.TECHMAP_FAIL') then no substitution will be performed. The\n");
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log("module in the map file are tried in alphabetical order.\n");
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log("\n");
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log("See 'help extract' for a pass that does the opposite thing.\n");
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log("\n");
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}
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@ -220,16 +255,26 @@ struct TechmapPass : public Pass {
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}
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map->modules.swap(modules_new);
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std::map<RTLIL::IdString, std::set<RTLIL::IdString>> celltypeMap;
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for (auto &it : map->modules) {
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if (it.second->attributes.count("\\celltype") && !it.second->attributes.at("\\celltype").str.empty()) {
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celltypeMap[RTLIL::escape_id(it.second->attributes.at("\\celltype").str)].insert(it.first);
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} else
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celltypeMap[it.first].insert(it.first);
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}
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bool did_something = true;
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std::set<RTLIL::Cell*> handled_cells;
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while (did_something) {
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did_something = false;
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for (auto &mod_it : design->modules)
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if (techmap_module(design, mod_it.second, map))
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if (techmap_module(design, mod_it.second, map, handled_cells, celltypeMap))
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did_something = true;
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}
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log("No more expansions possible.\n");
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techmap_cache.clear();
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techmap_fail_cache.clear();
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delete map;
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log_pop();
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}
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