diff options
Diffstat (limited to 'frontend/json/jsonparse.cc')
-rw-r--r-- | frontend/json/jsonparse.cc | 509 |
1 files changed, 349 insertions, 160 deletions
diff --git a/frontend/json/jsonparse.cc b/frontend/json/jsonparse.cc index 0ccf70f3..4d0fc1b1 100644 --- a/frontend/json/jsonparse.cc +++ b/frontend/json/jsonparse.cc @@ -28,18 +28,16 @@ #include <log.h> #include "common/design.h" #include "ice40/chip.h" -#warning "CC files shouldnt be included" -#include "ice40/chip.cc" -// #include "ice40/chipdb-384.cc" -// #include "ice40/chipdb-1k.cc" -// #include "ice40/chipdb-5k.cc" -#include "ice40/chipdb-8k.cc" + +extern bool check_all_nets_driven(Design *design); namespace JsonParser { -typedef std::string string; + const bool json_debug = false; + + typedef std::string string; -template<typename T> int GetSize(const T &obj) { return obj.size(); } + template<typename T> int GetSize(const T &obj) { return obj.size(); } struct JsonNode @@ -247,6 +245,66 @@ struct JsonNode }; +NetInfo *ground_net(NetInfo *net) { + CellInfo *cell = new CellInfo; + PortInfo port_info; + PortRef port_ref; + + cell->name = string(net->name + ".GND"); + cell->type = string("GND"); + + port_info.name = cell->name + "[]"; + port_info.net = net; + port_info.type = PORT_OUT; + + port_ref.cell = cell; + port_ref.port = port_info.name; + + net->driver = port_ref; + + cell->ports[port_info.name] = port_info; + + return net; +} + +NetInfo *vcc_net(NetInfo *net) { + CellInfo *cell = new CellInfo; + PortInfo port_info; + PortRef port_ref; + + cell->name = string(net->name + ".VCC"); + cell->type = string("VCC"); + + port_info.name = cell->name + "[]"; + port_info.net = net; + port_info.type = PORT_OUT; + + port_ref.cell = cell; + port_ref.port = port_info.name; + + net->driver = port_ref; + + cell->ports[port_info.name] = port_info; + + return net; +} + +NetInfo *floating_net(NetInfo *net) { + PortInfo port_info; + PortRef port_ref; + + port_info.name = net->name + ".floating"; + port_info.net = net; + port_info.type = PORT_OUT; + + port_ref.cell = NULL; + port_ref.port = port_info.name; + + net->driver = port_ref; + + return net; +} + // // is_blackbox // @@ -278,12 +336,286 @@ bool is_blackbox(JsonNode *node) { return true; } -void json_import(Design *design, string modname, JsonNode *node) +void json_import_cell_attributes(Design *design, string &modname, + CellInfo *cell, JsonNode *param_node, int param_id) { + // + JsonNode *param; + IdString pId; + // + param = param_node->data_dict.at( + param_node->data_dict_keys[param_id]); + + pId = param_node->data_dict_keys[param_id]; + if (param->type == 'N') { + cell->params[pId] = std::to_string(param_node->data_number);; + } else if (param->type == 'S') + cell->params[pId] = param->data_string; + else + log_error("JSON parameter type of \"%s\' of cell \'%s\' not supported\n", + pId.c_str(), + cell->name.c_str()); + + if (json_debug) log_info(" Added parameter \'%s\'=%s to cell \'%s\' " + "of module \'%s\'\n", + pId.c_str(), cell->params[pId].c_str(), + cell->name.c_str(), modname.c_str()); +} + +void json_import_cell_ports(Design *design, string &modname, CellInfo *cell, + string &port_name, JsonNode *dir_node,JsonNode *wire_group_node) { + // Examine and connect a single port of the given cell to its nets, + // generating them as necessary + + assert(dir_node); + + if (json_debug) log_info(" Examining port %s, node %s\n", port_name.c_str(), + cell->name.c_str()); + + if (!wire_group_node) + log_error("JSON no connection match " + "for port_direction \'%s\' of node \'%s\' " + "in module \'%s\'\n", + port_name, cell->name.c_str(), modname.c_str()); + + assert(wire_group_node); + + assert(dir_node->type == 'S'); + assert(wire_group_node->type == 'A'); + + PortInfo port_info; + + port_info.name = port_name; + if(dir_node->data_string.compare("input")==0) + port_info.type = PORT_IN; + else if(dir_node->data_string.compare("output")==0) + port_info.type = PORT_OUT; + else if(dir_node->data_string.compare("inout")==0) + port_info.type = PORT_INOUT; + else + log_error("JSON unknown port direction \'%s\' in node \'%s\' " + "of module \'%s\'\n", + dir_node->data_string.c_str(), + cell->name.c_str(), + modname.c_str()); + // + // Find an update, or create a net to connect + // to this port. + // + NetInfo *this_net; + bool is_bus; + + // + // If this port references a bus, then there will be multiple nets + // connected to it, all specified as part of an array. + // + is_bus = (wire_group_node->data_array.size()>1); + + // Now loop through all of the connections to this port. + for(int index=0; index < wire_group_node->data_array.size(); index++) { + // + JsonNode *wire_node; + PortInfo this_port; + PortRef port_ref; + bool const_input = false; + IdString net_id; + // + wire_node = wire_group_node->data_array[index]; + port_ref.cell = cell; + + // + // Pick a name for this port + if (is_bus) + this_port.name = port_info.name + '[' + + std::to_string(index) + ']'; + else + this_port.name = port_info.name; + this_port.type = port_info.type; + + port_ref.port = this_port.name; + + if (wire_node->type == 'N') { + int net_num; + + // A simple net, specified by a number + net_num = wire_node->data_number; + net_id = std::to_string(net_num); + if (design->nets.count(net_id) == 0) { + // The net doesn't exist in the design (yet) + // Create in now + + if (json_debug) log_info(" Generating a new net, \'%d\'\n", + net_num); + + this_net = new NetInfo; + this_net->name = net_id; + this_net->driver.cell = NULL; + this_net->driver.port = ""; + design->nets[net_id] = this_net; + } else { + // + // The net already exists within the design. + // We'll connect to it + // + this_net = design->nets[net_id]; + if (json_debug) log_info(" Reusing net \'%s\', id \'%s\', " + "with driver \'%s\'\n", + this_net->name.c_str(), net_id.c_str(), + (this_net->driver.cell!=NULL) + ? this_net->driver.port.c_str() + : "NULL"); + } + + } else if (wire_node->type == 'S') { + // Strings are only used to drive wires for the fixed + // values "0", "1", and "x". Handle those constant + // values here. + // + // Constants always get their own new net + this_net = new NetInfo; + this_net->name = net_id; + const_input = (this_port.type == PORT_IN); + + if (wire_node->data_string.compare(string("0"))==0) { + + if (json_debug) log_info(" Generating a constant " + "zero net\n"); + this_net = ground_net(this_net); + + } else if (wire_node->data_string.compare(string("1")) + ==0) { + + if (json_debug) log_info(" Generating a constant " + "one net\n"); + this_net = vcc_net(this_net); + + } else if (wire_node->data_string.compare(string("x")) + ==0) { + + this_net = floating_net(this_net); + log_warning(" Floating wire node value, " + "\'%s\' of port \'%s\' " + "in cell \'%s\' of module \'%s\'\n", + wire_node->data_string.c_str(), + port_name.c_str(), + cell->name.c_str(), + modname.c_str()); + + } else + log_error(" Unknown fixed type wire node " + "value, \'%s\'\n", + wire_node->data_string.c_str()); + } + + if (json_debug) log_info(" Inserting port \'%s\' into cell \'%s\'\n", + this_port.name.c_str(), cell->name.c_str()); + + this_port.net = this_net; + + cell->ports[this_port.name] = this_port; + + if (this_port.type == PORT_OUT) { + assert(this_net->driver.cell == NULL); + this_net->driver = port_ref; + } else + this_net->users.push_back(port_ref); + + if (design->nets.count(this_net->name) == 0) + design->nets[this_net->name] = this_net; + } +} + +void json_import_cell(Design *design, string modname, JsonNode *cell_node, + string cell_name) { + JsonNode *cell_type, *param_node; + + cell_type = cell_node->data_dict.at("type"); + if (cell_type == NULL) + return; + + CellInfo *cell = new CellInfo; + + cell->name = cell_name; + assert(cell_type->type == 'S'); + cell->type = cell_type->data_string; + // No BEL assignment here/yet + + if (json_debug) log_info(" Processing %s $ %s\n", + modname.c_str(), cell->name.c_str()); + + param_node = cell_node->data_dict.at("parameters"); + if (param_node->type != 'D') + log_error("JSON parameter list of \'%s\' is not a data dictionary\n", cell->name); + + // + // Loop through all parameters, adding them into the + // design to annotate the cell + // + for(int paramid = 0; paramid < GetSize(param_node->data_dict_keys); + paramid++) { + + json_import_cell_attributes(design, modname, cell, param_node, + paramid); + } + + + // + // Now connect the ports of this module. The ports are defined by + // both the port directions node as well as the connections node. + // Both should contain dictionaries having the same keys. + // + + JsonNode *pdir_node + = cell_node->data_dict.at("port_directions"); + if (pdir_node->type != 'D') + log_error("JSON port_directions node of \'%s\' " + "in module \'%s\' is not a " + "dictionary\n", cell->name.c_str(), + modname.c_str()); + + JsonNode *connections + = cell_node->data_dict.at("connections"); + if (connections->type != 'D') + log_error("JSON connections node of \'%s\' " + "in module \'%s\' is not a " + "dictionary\n", cell->name.c_str(), + modname.c_str()); + + if (GetSize(pdir_node->data_dict_keys) + != GetSize(connections->data_dict_keys)) + log_error("JSON number of connections doesnt " + "match number of ports in node \'%s\' " + "of module \'%s\'\n", + cell->name.c_str(), + modname.c_str()); + + // + // Loop through all of the ports of this logic element + // + for(int portid=0; portid<GetSize(pdir_node->data_dict_keys); + portid++) { + // + string port_name; + JsonNode *dir_node, *wire_group_node; + // + + port_name = pdir_node->data_dict_keys[portid]; + dir_node = pdir_node->data_dict.at(port_name); + wire_group_node = connections->data_dict.at(port_name); + + json_import_cell_ports(design, modname, cell, + port_name, dir_node, wire_group_node); + } + + design->cells[cell->name] = cell; + // check_all_nets_driven(design); +} + +void json_import(Design *design, string modname, JsonNode *node) { if (is_blackbox(node)) return; -log_info("Processing modname = %s\n", modname.c_str()); + log_info("Importing modname = %s\n", modname.c_str()); if (node->data_dict.count("cells")) { JsonNode *cell_parent = node->data_dict.at("cells"); @@ -295,159 +627,16 @@ log_info("Processing modname = %s\n", modname.c_str()); for(int cellid=0; cellid < GetSize(cell_parent->data_dict_keys); cellid ++) { JsonNode *cell_type, *here, *param_node; - + here = cell_parent->data_dict.at( cell_parent->data_dict_keys[cellid]); - cell_type = here->data_dict.at("type"); - if (cell_type == NULL) - continue; - - CellInfo *cell = new CellInfo; + json_import_cell(design, modname, here, + cell_parent->data_dict_keys[cellid]); - cell->name = cell_parent->data_dict_keys[cellid]; - cell->type = cell_type; - // No BEL assignment here/yet - -log_info(" Processing %s $ %s\n", modname.c_str(), cell->name.c_str()); - param_node = here->data_dict.at("parameters"); - if (param_node->type != 'D') - log_error("JSON parameter list of \'%s\' is not a data dictionary\n", cell->name); - - // - // Loop through all parameters, adding them into the - // design to annotate the cell - // - for(int paramid = 0; - paramid < GetSize(param_node->data_dict_keys); - paramid++) { - // - JsonNode *param; - // - param = param_node->data_dict.at( - param_node->data_dict_keys[paramid]); - - IdString pId; - pId = param_node->data_dict_keys[paramid]; - if (param->type == 'N') { - string tmp; - tmp = "" + param_node->data_number; - cell->params[pId] = tmp; - } else if (param->type == 'S') - cell->params[pId] = param->data_string; - else - log_error("JSON parameter type of \"%s\' of cell \'%s\' not supported\n", - pId.c_str(), - cell->name.c_str()); - -log_info(" Added parameter \'%s\'=%s to cell \'%s\' of module \'%s\'\n", - pId.c_str(), cell->params[pId].c_str(), - cell->name.c_str(), modname.c_str()); - } - - JsonNode *pdir_node - = here->data_dict.at("port_directions"); - if (pdir_node->type != 'D') - log_error("JSON port_directions node of \'%s\' " - "in module \'%s\' is not a " - "dictionary\n", cell->name.c_str(), - modname.c_str()); - - JsonNode *connections - = here->data_dict.at("connections"); - if (connections->type != 'D') - log_error("JSON connections node of \'%s\' " - "in module \'%s\' is not a " - "dictionary\n", cell->name.c_str(), - modname.c_str()); - - if (GetSize(pdir_node->data_dict_keys) - != GetSize(connections->data_dict_keys)) - log_error("JSON number of connections doesnt " - "match number of ports in node \'%s\' " - "of module \'%s\'\n", - cell->name.c_str(), - modname.c_str()); - - // - // Loop through all of the ports of this logic element - // - for(int portid=0; - portid<GetSize(pdir_node->data_dict_keys); - portid++) { - string key; - JsonNode *dir_node, *wire_node; - - key = pdir_node->data_dict_keys[portid]; - dir_node = pdir_node->data_dict.at(key); - wire_node = connections->data_dict.at(key); - - assert(dir_node); - -log_info("Examining port %s, node %s\n", key.c_str(), - cell->name.c_str()); - - if (!wire_node) - log_error("JSON no connection match " - "for port_direction \'%s\' " - "of node \'%s\' " - "in module \'%s\'\n", - key, cell->name.c_str(), - modname.c_str()); - - assert(wire_node); - - assert(dir_node->type == 'S'); - assert(wire_node->type == 'A'); - - PortInfo port_info; - port_info.name = cell->name + "$" + key; - if(dir_node->data_string.compare("input")==0) - port_info.type = PORT_IN; - else if(dir_node->data_string.compare("output")==0) - port_info.type = PORT_OUT; - else if(dir_node->data_string.compare("inout")==0) - port_info.type = PORT_INOUT; - else - log_error("JSON unknown port direction " - "\'%s\' in node \'%s\' " - "of module \'%s\'\n", - dir_node->data_string.c_str(), - cell->name.c_str(), - modname.c_str()); - - // - // Find an update, or create a net to connect - // to this port. - // - PortRef port_ref; - int net_num; - NetInfo *this_net; - IdString net_id; - - net_num = wire_node->data_number; - net_id = string(""+net_num); - if (design->nets.count(net_id) == 0) { - this_net = new NetInfo; - this_net->name = "" + net_id; - design->nets[net_id] = this_net; - this_net->driver.cell = NULL; - this_net->driver.port = ""; - } else - this_net = design->nets[net_id]; - - port_ref.cell = cell; - port_ref.port = port_info.name; - - if (port_info.type != PORT_IN) { - assert(this_net->driver->cell == NULL); - this_net->driver = port_ref; - } else - this_net->users.push_back(port_ref); - } - - design->cells[cell->name] = cell; } } + + check_all_nets_driven(design); } struct JsonFrontend { @@ -488,6 +677,8 @@ int main(int argc, char **argv) { ChipArgs chip_args; chip_args.type = ChipArgs::LP384; + log_files.push_back(stderr); + Design *design = new Design(chip_args); // std::string fname = "../../ice40/blinky.json"; std::string fname = "/home/dan/work/rnd/opencores/icozip/trunk/rtl/icozip/icozip.json"; @@ -497,5 +688,3 @@ int main(int argc, char **argv) { printf("Successful exit\n"); } -int num_wires_384 = 0; -WireInfoPOD wire_data_384[] = { 0 }; |