diff options
Diffstat (limited to 'passes/techmap/dfflibmap.cc')
| -rw-r--r-- | passes/techmap/dfflibmap.cc | 172 |
1 files changed, 94 insertions, 78 deletions
diff --git a/passes/techmap/dfflibmap.cc b/passes/techmap/dfflibmap.cc index 4cb1489a8..b15109cd3 100644 --- a/passes/techmap/dfflibmap.cc +++ b/passes/techmap/dfflibmap.cc @@ -27,12 +27,12 @@ USING_YOSYS_NAMESPACE PRIVATE_NAMESPACE_BEGIN struct cell_mapping { - std::string cell_name; + IdString cell_name; std::map<std::string, char> ports; }; static std::map<RTLIL::IdString, cell_mapping> cell_mappings; -static void logmap(std::string dff) +static void logmap(IdString dff) { if (cell_mappings.count(dff) == 0) { log(" unmapped dff cell: %s\n", dff.c_str()); @@ -54,26 +54,26 @@ static void logmap(std::string dff) static void logmap_all() { - logmap("$_DFF_N_"); - logmap("$_DFF_P_"); - - logmap("$_DFF_NN0_"); - logmap("$_DFF_NN1_"); - logmap("$_DFF_NP0_"); - logmap("$_DFF_NP1_"); - logmap("$_DFF_PN0_"); - logmap("$_DFF_PN1_"); - logmap("$_DFF_PP0_"); - logmap("$_DFF_PP1_"); - - logmap("$_DFFSR_NNN_"); - logmap("$_DFFSR_NNP_"); - logmap("$_DFFSR_NPN_"); - logmap("$_DFFSR_NPP_"); - logmap("$_DFFSR_PNN_"); - logmap("$_DFFSR_PNP_"); - logmap("$_DFFSR_PPN_"); - logmap("$_DFFSR_PPP_"); + logmap(ID($_DFF_N_)); + logmap(ID($_DFF_P_)); + + logmap(ID($_DFF_NN0_)); + logmap(ID($_DFF_NN1_)); + logmap(ID($_DFF_NP0_)); + logmap(ID($_DFF_NP1_)); + logmap(ID($_DFF_PN0_)); + logmap(ID($_DFF_PN1_)); + logmap(ID($_DFF_PP0_)); + logmap(ID($_DFF_PP1_)); + + logmap(ID($_DFFSR_NNN_)); + logmap(ID($_DFFSR_NNP_)); + logmap(ID($_DFFSR_NPN_)); + logmap(ID($_DFFSR_NPP_)); + logmap(ID($_DFFSR_PNN_)); + logmap(ID($_DFFSR_PNP_)); + logmap(ID($_DFFSR_PPN_)); + logmap(ID($_DFFSR_PPP_)); } static bool parse_pin(LibertyAst *cell, LibertyAst *attr, std::string &pin_name, bool &pin_pol) @@ -100,10 +100,22 @@ static bool parse_pin(LibertyAst *cell, LibertyAst *attr, std::string &pin_name, for (auto child : cell->children) if (child->id == "pin" && child->args.size() == 1 && child->args[0] == pin_name) return true; + + /* If we end up here, the pin specified in the attribute does not exist, which is an error, + or, the attribute contains an expression which we do not yet support. + For now, we'll simply produce a warning to let the user know something is up. + */ + if (pin_name.find_first_of("^*|&") == std::string::npos) { + log_warning("Malformed liberty file - cannot find pin '%s' in cell '%s' - skipping.\n", pin_name.c_str(), cell->args[0].c_str()); + } + else { + log_warning("Found unsupported expression '%s' in pin attribute of cell '%s' - skipping.\n", pin_name.c_str(), cell->args[0].c_str()); + } + return false; } -static void find_cell(LibertyAst *ast, std::string cell_type, bool clkpol, bool has_reset, bool rstpol, bool rstval, bool prepare_mode) +static void find_cell(LibertyAst *ast, IdString cell_type, bool clkpol, bool has_reset, bool rstpol, bool rstval, bool prepare_mode) { LibertyAst *best_cell = NULL; std::map<std::string, char> best_cell_ports; @@ -218,13 +230,13 @@ static void find_cell(LibertyAst *ast, std::string cell_type, bool clkpol, bool cell_mappings[cell_type].ports["D"] = 'D'; cell_mappings[cell_type].ports["Q"] = 'Q'; } else { - cell_mappings[cell_type].cell_name = best_cell->args[0]; + cell_mappings[cell_type].cell_name = RTLIL::escape_id(best_cell->args[0]); cell_mappings[cell_type].ports = best_cell_ports; } } } -static void find_cell_sr(LibertyAst *ast, std::string cell_type, bool clkpol, bool setpol, bool clrpol, bool prepare_mode) +static void find_cell_sr(LibertyAst *ast, IdString cell_type, bool clkpol, bool setpol, bool clrpol, bool prepare_mode) { LibertyAst *best_cell = NULL; std::map<std::string, char> best_cell_ports; @@ -240,6 +252,10 @@ static void find_cell_sr(LibertyAst *ast, std::string cell_type, bool clkpol, bo if (cell->id != "cell" || cell->args.size() != 1) continue; + LibertyAst *dn = cell->find("dont_use"); + if (dn != NULL && dn->value == "true") + continue; + LibertyAst *ff = cell->find("ff"); if (ff == NULL) continue; @@ -331,7 +347,7 @@ static void find_cell_sr(LibertyAst *ast, std::string cell_type, bool clkpol, bo cell_mappings[cell_type].ports["D"] = 'D'; cell_mappings[cell_type].ports["Q"] = 'Q'; } else { - cell_mappings[cell_type].cell_name = best_cell->args[0]; + cell_mappings[cell_type].cell_name = RTLIL::escape_id(best_cell->args[0]); cell_mappings[cell_type].ports = best_cell_ports; } } @@ -388,7 +404,7 @@ static bool expand_cellmap(std::string pattern, std::string inv) return return_status; } -static void map_sr_to_arst(const char *from, const char *to) +static void map_sr_to_arst(IdString from, IdString to) { if (!cell_mappings.count(from) || cell_mappings.count(to) > 0) return; @@ -403,7 +419,7 @@ static void map_sr_to_arst(const char *from, const char *to) log_assert(from_clk_pol == to_clk_pol); log_assert(to_rst_pol == from_set_pol && to_rst_pol == from_clr_pol); - log(" create mapping for %s from mapping for %s.\n", to, from); + log(" create mapping for %s from mapping for %s.\n", to.c_str(), from.c_str()); cell_mappings[to].cell_name = cell_mappings[from].cell_name; cell_mappings[to].ports = cell_mappings[from].ports; @@ -434,7 +450,7 @@ static void map_sr_to_arst(const char *from, const char *to) } } -static void map_adff_to_dff(const char *from, const char *to) +static void map_adff_to_dff(IdString from, IdString to) { if (!cell_mappings.count(from) || cell_mappings.count(to) > 0) return; @@ -445,7 +461,7 @@ static void map_adff_to_dff(const char *from, const char *to) log_assert(from_clk_pol == to_clk_pol); - log(" create mapping for %s from mapping for %s.\n", to, from); + log(" create mapping for %s from mapping for %s.\n", to.c_str(), from.c_str()); cell_mappings[to].cell_name = cell_mappings[from].cell_name; cell_mappings[to].ports = cell_mappings[from].ports; @@ -468,8 +484,8 @@ static void dfflibmap(RTLIL::Design *design, RTLIL::Module *module, bool prepare for (auto &it : module->cells_) { if (design->selected(module, it.second) && cell_mappings.count(it.second->type) > 0) cell_list.push_back(it.second); - if (it.second->type == "$_NOT_") - notmap[sigmap(it.second->getPort("\\A"))].insert(it.second); + if (it.second->type == ID($_NOT_)) + notmap[sigmap(it.second->getPort(ID::A))].insert(it.second); } std::map<std::string, int> stats; @@ -483,7 +499,7 @@ static void dfflibmap(RTLIL::Design *design, RTLIL::Module *module, bool prepare module->remove(cell); cell_mapping &cm = cell_mappings[cell_type]; - RTLIL::Cell *new_cell = module->addCell(cell_name, prepare_mode ? cm.cell_name : "\\" + cm.cell_name); + RTLIL::Cell *new_cell = module->addCell(cell_name, prepare_mode ? cm.cell_name : cm.cell_name); new_cell->set_src_attribute(src); @@ -503,8 +519,8 @@ static void dfflibmap(RTLIL::Design *design, RTLIL::Module *module, bool prepare sig = module->addWire(NEW_ID, GetSize(old_sig)); if (has_q && has_qn) { for (auto &it : notmap[sigmap(old_sig)]) { - module->connect(it->getPort("\\Y"), sig); - it->setPort("\\Y", module->addWire(NEW_ID, GetSize(old_sig))); + module->connect(it->getPort(ID::Y), sig); + it->setPort(ID::Y, module->addWire(NEW_ID, GetSize(old_sig))); } } else { module->addNotGate(NEW_ID, sig, old_sig); @@ -533,7 +549,7 @@ static void dfflibmap(RTLIL::Design *design, RTLIL::Module *module, bool prepare struct DfflibmapPass : public Pass { DfflibmapPass() : Pass("dfflibmap", "technology mapping of flip-flops") { } - virtual void help() + void help() YS_OVERRIDE { log("\n"); log(" dfflibmap [-prepare] -liberty <file> [selection]\n"); @@ -549,7 +565,7 @@ struct DfflibmapPass : public Pass { log("liberty file.\n"); log("\n"); } - virtual void execute(std::vector<std::string> args, RTLIL::Design *design) + void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE { log_header(design, "Executing DFFLIBMAP pass (mapping DFF cells to sequential cells from liberty file).\n"); @@ -583,26 +599,26 @@ struct DfflibmapPass : public Pass { LibertyParser libparser(f); f.close(); - find_cell(libparser.ast, "$_DFF_N_", false, false, false, false, prepare_mode); - find_cell(libparser.ast, "$_DFF_P_", true, false, false, false, prepare_mode); - - find_cell(libparser.ast, "$_DFF_NN0_", false, true, false, false, prepare_mode); - find_cell(libparser.ast, "$_DFF_NN1_", false, true, false, true, prepare_mode); - find_cell(libparser.ast, "$_DFF_NP0_", false, true, true, false, prepare_mode); - find_cell(libparser.ast, "$_DFF_NP1_", false, true, true, true, prepare_mode); - find_cell(libparser.ast, "$_DFF_PN0_", true, true, false, false, prepare_mode); - find_cell(libparser.ast, "$_DFF_PN1_", true, true, false, true, prepare_mode); - find_cell(libparser.ast, "$_DFF_PP0_", true, true, true, false, prepare_mode); - find_cell(libparser.ast, "$_DFF_PP1_", true, true, true, true, prepare_mode); - - find_cell_sr(libparser.ast, "$_DFFSR_NNN_", false, false, false, prepare_mode); - find_cell_sr(libparser.ast, "$_DFFSR_NNP_", false, false, true, prepare_mode); - find_cell_sr(libparser.ast, "$_DFFSR_NPN_", false, true, false, prepare_mode); - find_cell_sr(libparser.ast, "$_DFFSR_NPP_", false, true, true, prepare_mode); - find_cell_sr(libparser.ast, "$_DFFSR_PNN_", true, false, false, prepare_mode); - find_cell_sr(libparser.ast, "$_DFFSR_PNP_", true, false, true, prepare_mode); - find_cell_sr(libparser.ast, "$_DFFSR_PPN_", true, true, false, prepare_mode); - find_cell_sr(libparser.ast, "$_DFFSR_PPP_", true, true, true, prepare_mode); + find_cell(libparser.ast, ID($_DFF_N_), false, false, false, false, prepare_mode); + find_cell(libparser.ast, ID($_DFF_P_), true, false, false, false, prepare_mode); + + find_cell(libparser.ast, ID($_DFF_NN0_), false, true, false, false, prepare_mode); + find_cell(libparser.ast, ID($_DFF_NN1_), false, true, false, true, prepare_mode); + find_cell(libparser.ast, ID($_DFF_NP0_), false, true, true, false, prepare_mode); + find_cell(libparser.ast, ID($_DFF_NP1_), false, true, true, true, prepare_mode); + find_cell(libparser.ast, ID($_DFF_PN0_), true, true, false, false, prepare_mode); + find_cell(libparser.ast, ID($_DFF_PN1_), true, true, false, true, prepare_mode); + find_cell(libparser.ast, ID($_DFF_PP0_), true, true, true, false, prepare_mode); + find_cell(libparser.ast, ID($_DFF_PP1_), true, true, true, true, prepare_mode); + + find_cell_sr(libparser.ast, ID($_DFFSR_NNN_), false, false, false, prepare_mode); + find_cell_sr(libparser.ast, ID($_DFFSR_NNP_), false, false, true, prepare_mode); + find_cell_sr(libparser.ast, ID($_DFFSR_NPN_), false, true, false, prepare_mode); + find_cell_sr(libparser.ast, ID($_DFFSR_NPP_), false, true, true, prepare_mode); + find_cell_sr(libparser.ast, ID($_DFFSR_PNN_), true, false, false, prepare_mode); + find_cell_sr(libparser.ast, ID($_DFFSR_PNP_), true, false, true, prepare_mode); + find_cell_sr(libparser.ast, ID($_DFFSR_PPN_), true, true, false, prepare_mode); + find_cell_sr(libparser.ast, ID($_DFFSR_PPP_), true, true, true, prepare_mode); // try to implement as many cells as possible just by inverting // the SET and RESET pins. If necessary, implement cell types @@ -626,29 +642,29 @@ struct DfflibmapPass : public Pass { break; } - map_sr_to_arst("$_DFFSR_NNN_", "$_DFF_NN0_"); - map_sr_to_arst("$_DFFSR_NNN_", "$_DFF_NN1_"); - map_sr_to_arst("$_DFFSR_NPP_", "$_DFF_NP0_"); - map_sr_to_arst("$_DFFSR_NPP_", "$_DFF_NP1_"); - map_sr_to_arst("$_DFFSR_PNN_", "$_DFF_PN0_"); - map_sr_to_arst("$_DFFSR_PNN_", "$_DFF_PN1_"); - map_sr_to_arst("$_DFFSR_PPP_", "$_DFF_PP0_"); - map_sr_to_arst("$_DFFSR_PPP_", "$_DFF_PP1_"); - - map_adff_to_dff("$_DFF_NN0_", "$_DFF_N_"); - map_adff_to_dff("$_DFF_NN1_", "$_DFF_N_"); - map_adff_to_dff("$_DFF_NP0_", "$_DFF_N_"); - map_adff_to_dff("$_DFF_NP1_", "$_DFF_N_"); - map_adff_to_dff("$_DFF_PN0_", "$_DFF_P_"); - map_adff_to_dff("$_DFF_PN1_", "$_DFF_P_"); - map_adff_to_dff("$_DFF_PP0_", "$_DFF_P_"); - map_adff_to_dff("$_DFF_PP1_", "$_DFF_P_"); - - log(" final dff cell mappings:\n"); - logmap_all(); + map_sr_to_arst(ID($_DFFSR_NNN_), ID($_DFF_NN0_)); + map_sr_to_arst(ID($_DFFSR_NNN_), ID($_DFF_NN1_)); + map_sr_to_arst(ID($_DFFSR_NPP_), ID($_DFF_NP0_)); + map_sr_to_arst(ID($_DFFSR_NPP_), ID($_DFF_NP1_)); + map_sr_to_arst(ID($_DFFSR_PNN_), ID($_DFF_PN0_)); + map_sr_to_arst(ID($_DFFSR_PNN_), ID($_DFF_PN1_)); + map_sr_to_arst(ID($_DFFSR_PPP_), ID($_DFF_PP0_)); + map_sr_to_arst(ID($_DFFSR_PPP_), ID($_DFF_PP1_)); + + map_adff_to_dff(ID($_DFF_NN0_), ID($_DFF_N_)); + map_adff_to_dff(ID($_DFF_NN1_), ID($_DFF_N_)); + map_adff_to_dff(ID($_DFF_NP0_), ID($_DFF_N_)); + map_adff_to_dff(ID($_DFF_NP1_), ID($_DFF_N_)); + map_adff_to_dff(ID($_DFF_PN0_), ID($_DFF_P_)); + map_adff_to_dff(ID($_DFF_PN1_), ID($_DFF_P_)); + map_adff_to_dff(ID($_DFF_PP0_), ID($_DFF_P_)); + map_adff_to_dff(ID($_DFF_PP1_), ID($_DFF_P_)); + + log(" final dff cell mappings:\n"); + logmap_all(); for (auto &it : design->modules_) - if (design->selected(it.second) && !it.second->get_bool_attribute("\\blackbox")) + if (design->selected(it.second) && !it.second->get_blackbox_attribute()) dfflibmap(design, it.second, prepare_mode); cell_mappings.clear(); |