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author | gatecat <gatecat@ds0.me> | 2021-03-25 16:39:24 +0000 |
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committer | gatecat <gatecat@ds0.me> | 2021-03-25 16:39:24 +0000 |
commit | c388cebf7f530129d91a2a99936116a258c168d1 (patch) | |
tree | 59fb73116eda6559381478843b5b0ec9e6a6d842 | |
parent | f233bee9701ea191862d26616d68dab08ba7d2b0 (diff) | |
download | nextpnr-c388cebf7f530129d91a2a99936116a258c168d1.tar.gz nextpnr-c388cebf7f530129d91a2a99936116a258c168d1.tar.bz2 nextpnr-c388cebf7f530129d91a2a99936116a258c168d1.zip |
nexus: Add support for get_pins PDC command
Signed-off-by: gatecat <gatecat@ds0.me>
-rw-r--r-- | nexus/pdc.cc | 63 |
1 files changed, 56 insertions, 7 deletions
diff --git a/nexus/pdc.cc b/nexus/pdc.cc index 4aef354c..1ffe0a64 100644 --- a/nexus/pdc.cc +++ b/nexus/pdc.cc @@ -32,32 +32,55 @@ struct TCLEntity ENTITY_CELL, ENTITY_PORT, ENTITY_NET, + ENTITY_PIN, } type; IdString name; + IdString pin; // for cell pins only TCLEntity(EntityType type, IdString name) : type(type), name(name) {} + TCLEntity(EntityType type, IdString name, IdString pin) : type(type), name(name), pin(pin) {} const std::string &to_string(Context *ctx) { return name.str(ctx); } - CellInfo *get_cell(Context *ctx) + CellInfo *get_cell(Context *ctx) const { if (type != ENTITY_CELL) return nullptr; return ctx->cells.at(name).get(); } - PortInfo *get_port(Context *ctx) + PortInfo *get_port(Context *ctx) const { if (type != ENTITY_PORT) return nullptr; return &ctx->ports.at(name); } - NetInfo *get_net(Context *ctx) + NetInfo *get_net(Context *ctx) const { - if (type != ENTITY_NET) + if (type == ENTITY_PIN) { + CellInfo *cell = nullptr; + if (ctx->cells.count(name)) { + cell = ctx->cells.at(name).get(); + } else { + const std::string &n = name.str(ctx); + auto pos = n.rfind('.'); + if (pos == std::string::npos) + return nullptr; + // remove one hierarchy layer due to Radiant weirdness around PLLs etc + IdString stripped_name = ctx->id(n.substr(0, pos)); + if (!ctx->cells.count(stripped_name)) + return nullptr; + cell = ctx->cells.at(stripped_name).get(); + } + if (!cell->ports.count(pin)) + return nullptr; + return cell->ports.at(pin).net; + } else if (type == ENTITY_NET) { + return ctx->nets.at(name).get(); + } else { return nullptr; - return ctx->nets.at(name).get(); + } } }; @@ -201,6 +224,8 @@ struct PDCParser return cmd_get_cells(arguments); else if (cmd == "get_nets") return cmd_get_nets(arguments); + else if (cmd == "get_pins") + return cmd_get_pins(arguments); else if (cmd == "create_clock") return cmd_create_clock(arguments); else if (cmd == "ldc_set_location") @@ -286,6 +311,28 @@ struct PDCParser return cells; } + TCLValue cmd_get_pins(const std::vector<TCLValue> &arguments) + { + std::vector<TCLEntity> pins; + for (int i = 1; i < int(arguments.size()); i++) { + auto &arg = arguments.at(i); + if (!arg.is_string) + log_error("get_pins expected string arguments (line %d)\n", lineno); + std::string s = arg.str; + if (s.at(0) == '-') + log_error("unsupported argument '%s' to get_pins (line %d)\n", s.c_str(), lineno); + auto pos = s.rfind('/'); + if (pos == std::string::npos) + log_error("expected / in cell pin name '%s' (line %d)\n", s.c_str(), lineno); + pins.emplace_back(TCLEntity::ENTITY_PIN, ctx->id(s.substr(0, pos)), ctx->id(s.substr(pos + 1))); + if (pins.back().get_net(ctx) == nullptr) { + log_warning("cell pin '%s' not found\n", s.c_str()); + pins.pop_back(); + } + } + return pins; + } + TCLValue cmd_create_clock(const std::vector<TCLValue> &arguments) { float period = 10; @@ -311,12 +358,14 @@ struct PDCParser } else { for (const auto &ety : arg.list) { NetInfo *net = nullptr; - if (ety.type == TCLEntity::ENTITY_NET) + if (ety.type == TCLEntity::ENTITY_PIN) + net = ety.get_net(ctx); + else if (ety.type == TCLEntity::ENTITY_NET) net = ctx->nets.at(ety.name).get(); else if (ety.type == TCLEntity::ENTITY_PORT) net = ctx->ports.at(ety.name).net; else - log_error("create_clock applies only to cells or IO ports (line %d)\n", lineno); + log_error("create_clock applies only to cells, cell pins, or IO ports (line %d)\n", lineno); ctx->addClock(net->name, 1000.0f / period); } } |