789 lines
25 KiB
C++
789 lines
25 KiB
C++
/*
|
|
* nextpnr -- Next Generation Place and Route
|
|
*
|
|
* Copyright (C) 2018 SymbioticEDA
|
|
*
|
|
* jsonparse.cc -- liberally copied from the yosys file of the same name by
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include "jsonparse.h"
|
|
#include <assert.h>
|
|
#include <fstream>
|
|
#include <iostream>
|
|
#include <log.h>
|
|
#include <string>
|
|
#include "nextpnr.h"
|
|
|
|
NEXTPNR_NAMESPACE_BEGIN
|
|
|
|
extern bool check_all_nets_driven(Design *design);
|
|
|
|
namespace JsonParser {
|
|
|
|
const bool json_debug = false;
|
|
|
|
typedef std::string string;
|
|
|
|
template <typename T> int GetSize(const T &obj) { return obj.size(); }
|
|
|
|
struct JsonNode
|
|
{
|
|
char type; // S=String, N=Number, A=Array, D=Dict
|
|
string data_string;
|
|
int data_number;
|
|
std::vector<JsonNode *> data_array;
|
|
std::unordered_map<string, JsonNode *> data_dict;
|
|
std::vector<string> data_dict_keys;
|
|
|
|
JsonNode(std::istream &f)
|
|
{
|
|
type = 0;
|
|
data_number = 0;
|
|
|
|
while (1) {
|
|
int ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n')
|
|
continue;
|
|
|
|
if (ch == '\"') {
|
|
type = 'S';
|
|
|
|
while (1) {
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON string.\n");
|
|
|
|
if (ch == '\"')
|
|
break;
|
|
|
|
if (ch == '\\') {
|
|
int ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON string.\n");
|
|
}
|
|
|
|
data_string += ch;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if ('0' <= ch && ch <= '9') {
|
|
type = 'N';
|
|
data_number = ch - '0';
|
|
data_string += ch;
|
|
|
|
while (1) {
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
break;
|
|
|
|
if (ch == '.')
|
|
goto parse_real;
|
|
|
|
if (ch < '0' || '9' < ch) {
|
|
f.unget();
|
|
break;
|
|
}
|
|
|
|
data_number = data_number * 10 + (ch - '0');
|
|
data_string += ch;
|
|
}
|
|
|
|
data_string = "";
|
|
break;
|
|
|
|
parse_real:
|
|
type = 'S';
|
|
data_number = 0;
|
|
data_string += ch;
|
|
|
|
while (1) {
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
break;
|
|
|
|
if (ch < '0' || '9' < ch) {
|
|
f.unget();
|
|
break;
|
|
}
|
|
|
|
data_string += ch;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (ch == '[') {
|
|
type = 'A';
|
|
|
|
while (1) {
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n' ||
|
|
ch == ',')
|
|
continue;
|
|
|
|
if (ch == ']')
|
|
break;
|
|
|
|
f.unget();
|
|
data_array.push_back(new JsonNode(f));
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (ch == '{') {
|
|
type = 'D';
|
|
|
|
while (1) {
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n' ||
|
|
ch == ',')
|
|
continue;
|
|
|
|
if (ch == '}')
|
|
break;
|
|
|
|
f.unget();
|
|
JsonNode key(f);
|
|
|
|
while (1) {
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' ||
|
|
ch == '\n' || ch == ':')
|
|
continue;
|
|
|
|
f.unget();
|
|
break;
|
|
}
|
|
|
|
JsonNode *value = new JsonNode(f);
|
|
|
|
if (key.type != 'S')
|
|
log_error("Unexpected non-string key in JSON dict.\n");
|
|
|
|
data_dict[key.data_string] = value;
|
|
data_dict_keys.push_back(key.data_string);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
log_error("Unexpected character in JSON file: '%c'\n", ch);
|
|
}
|
|
}
|
|
|
|
~JsonNode()
|
|
{
|
|
for (auto it : data_array)
|
|
delete it;
|
|
for (auto &it : data_dict)
|
|
delete it.second;
|
|
}
|
|
};
|
|
|
|
NetInfo *ground_net(NetInfo *net)
|
|
{
|
|
CellInfo *cell = new CellInfo;
|
|
PortInfo port_info;
|
|
PortRef port_ref;
|
|
|
|
cell->name = string(net->name.str() + ".GND");
|
|
cell->type = string("GND");
|
|
|
|
port_info.name = cell->name.str() + "[]";
|
|
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.str() + ".VCC");
|
|
cell->type = string("VCC");
|
|
|
|
port_info.name = cell->name.str() + "[]";
|
|
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.str() + ".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
|
|
//
|
|
// Checks the JsonNode for an attributes dictionary, with a "blackbox" entry.
|
|
// An item is deemed to be a blackbox if this entry exists and if its
|
|
// value is not zero. If the item is a black box, this routine will return
|
|
// true, false otherwise
|
|
bool is_blackbox(JsonNode *node)
|
|
{
|
|
JsonNode *attr_node, *bbox_node;
|
|
|
|
if (node->data_dict.count("attributes") == 0)
|
|
return false;
|
|
attr_node = node->data_dict.at("attributes");
|
|
if (attr_node == NULL)
|
|
return false;
|
|
if (attr_node->type != 'D')
|
|
return false;
|
|
if (GetSize(attr_node->data_dict) == 0)
|
|
return false;
|
|
if (attr_node->data_dict.count("blackbox") == 0)
|
|
return false;
|
|
bbox_node = attr_node->data_dict.at("blackbox");
|
|
if (bbox_node == NULL)
|
|
return false;
|
|
if (bbox_node->type != 'N')
|
|
log_error("JSON module blackbox is not a number\n");
|
|
if (bbox_node->data_number == 0)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
void json_import_cell_params(Design *design, string &modname, CellInfo *cell,
|
|
JsonNode *param_node,
|
|
std::unordered_map<IdString, std::string> *dest,
|
|
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') {
|
|
(*dest)[pId] = std::to_string(param->data_number);
|
|
} else if (param->type == 'S')
|
|
(*dest)[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());
|
|
}
|
|
|
|
template <typename F>
|
|
void json_import_ports(Design *design, const string &modname,
|
|
const string &obj_name, const string &port_name,
|
|
JsonNode *dir_node, JsonNode *wire_group_node, F visitor)
|
|
{
|
|
// Examine a port of a cell or the design. For every bit of the port,
|
|
// the connected net will be processed and `visitor` will be called
|
|
// with (PortType dir, std::string name, NetInfo *net)
|
|
assert(dir_node);
|
|
|
|
if (json_debug)
|
|
log_info(" Examining port %s, node %s\n", port_name.c_str(),
|
|
obj_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.c_str(), obj_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(), obj_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.
|
|
if (wire_group_node->data_array.size() == 0) {
|
|
//
|
|
// There is/are no connections to this port.
|
|
//
|
|
// Create the port, but leave the net NULL
|
|
|
|
visitor(port_info.type, port_info.name, nullptr);
|
|
|
|
if (json_debug)
|
|
log_info(" Port \'%s\' has no connection in \'%s\'\n",
|
|
port_info.name.c_str(), obj_name.c_str());
|
|
|
|
} else
|
|
for (int index = 0; index < wire_group_node->data_array.size();
|
|
index++) {
|
|
//
|
|
JsonNode *wire_node;
|
|
PortInfo this_port;
|
|
bool const_input = false;
|
|
IdString net_id;
|
|
//
|
|
wire_node = wire_group_node->data_array[index];
|
|
//
|
|
// 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;
|
|
|
|
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(), obj_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(), obj_name.c_str());
|
|
visitor(this_port.type, this_port.name, this_net);
|
|
|
|
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, *attr_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.c_str());
|
|
|
|
//
|
|
// 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_params(design, modname, cell, param_node,
|
|
&cell->params, paramid);
|
|
}
|
|
|
|
attr_node = cell_node->data_dict.at("attributes");
|
|
if (attr_node->type != 'D')
|
|
log_error("JSON attribute list of \'%s\' is not a data dictionary\n",
|
|
cell->name.c_str());
|
|
|
|
//
|
|
// Loop through all attributes, adding them into the
|
|
// design to annotate the cell
|
|
//
|
|
for (int attrid = 0; attrid < GetSize(attr_node->data_dict_keys);
|
|
attrid++) {
|
|
|
|
json_import_cell_params(design, modname, cell, attr_node, &cell->attrs,
|
|
attrid);
|
|
}
|
|
|
|
//
|
|
// 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 = NULL;
|
|
if (cell_node->data_dict.count("port_directions") > 0) {
|
|
|
|
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());
|
|
|
|
} else if (cell_node->data_dict.count("ports") > 0) {
|
|
pdir_node = cell_node->data_dict.at("ports");
|
|
if (pdir_node->type != 'D')
|
|
log_error("JSON ports 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_ports(
|
|
design, modname, cell->name, port_name, dir_node,
|
|
wire_group_node,
|
|
[cell](PortType type, const std::string &name, NetInfo *net) {
|
|
cell->ports[name] = PortInfo{name, net, type};
|
|
PortRef pr;
|
|
pr.cell = cell;
|
|
pr.port = name;
|
|
if (net != nullptr) {
|
|
if (type == PORT_IN || type == PORT_INOUT) {
|
|
net->users.push_back(pr);
|
|
} else if (type == PORT_OUT) {
|
|
assert(net->driver.cell == nullptr);
|
|
net->driver = pr;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
design->cells[cell->name] = cell;
|
|
// check_all_nets_driven(design);
|
|
}
|
|
|
|
static void insert_iobuf(Design *design, NetInfo *net, PortType type,
|
|
const string &name)
|
|
{
|
|
// Instantiate a architecture-independent IO buffer connected to a given
|
|
// net, of a given type, and named after the IO port.
|
|
//
|
|
// During packing, this generic IO buffer will be converted to an
|
|
// architecure primitive.
|
|
//
|
|
CellInfo *iobuf = new CellInfo();
|
|
iobuf->name = name;
|
|
std::copy(net->attrs.begin(), net->attrs.end(),
|
|
std::inserter(iobuf->attrs, iobuf->attrs.begin()));
|
|
if (type == PORT_IN) {
|
|
log_info("processing input port %s\n", name.c_str());
|
|
iobuf->type = "$nextpnr_ibuf";
|
|
iobuf->ports["O"] = PortInfo{"O", net, PORT_OUT};
|
|
|
|
assert(net->driver.cell == nullptr);
|
|
net->driver.port = "O";
|
|
net->driver.cell = iobuf;
|
|
} else if (type == PORT_OUT) {
|
|
log_info("processing output port %s\n", name.c_str());
|
|
iobuf->type = "$nextpnr_obuf";
|
|
iobuf->ports["I"] = PortInfo{"I", net, PORT_IN};
|
|
PortRef ref;
|
|
ref.cell = iobuf;
|
|
ref.port = "I";
|
|
net->users.push_back(ref);
|
|
} else if (type == PORT_INOUT) {
|
|
log_info("processing inout port %s\n", name.c_str());
|
|
iobuf->type = "$nextpnr_iobuf";
|
|
iobuf->ports["I"] = PortInfo{"I", nullptr, PORT_IN};
|
|
if (net->driver.cell != NULL) {
|
|
// Split the input and output nets for bidir ports
|
|
NetInfo *net2 = new NetInfo();
|
|
net2->name = "$" + net->name.str() + "$iobuf_i";
|
|
net2->driver = net->driver;
|
|
net2->driver.cell->ports[net2->driver.port].net = net2;
|
|
net->driver.cell = nullptr;
|
|
design->nets[net2->name] = net2;
|
|
iobuf->ports["I"].net = net2;
|
|
PortRef ref;
|
|
ref.cell = iobuf;
|
|
ref.port = "I";
|
|
net2->users.push_back(ref);
|
|
}
|
|
iobuf->ports["O"] = PortInfo{"O", net, PORT_OUT};
|
|
assert(net->driver.cell == nullptr);
|
|
net->driver.port = "O";
|
|
net->driver.cell = iobuf;
|
|
} else {
|
|
assert(false);
|
|
}
|
|
design->cells[iobuf->name] = iobuf;
|
|
}
|
|
|
|
void json_import_toplevel_port(Design *design, const string &modname,
|
|
const string &portname, JsonNode *node)
|
|
{
|
|
JsonNode *dir_node = node->data_dict.at("direction");
|
|
JsonNode *nets_node = node->data_dict.at("bits");
|
|
json_import_ports(
|
|
design, modname, "Top Level IO", portname, dir_node, nets_node,
|
|
[design](PortType type, const std::string &name, NetInfo *net) {
|
|
insert_iobuf(design, net, type, name);
|
|
});
|
|
}
|
|
|
|
void json_import(Design *design, string modname, JsonNode *node)
|
|
{
|
|
if (is_blackbox(node))
|
|
return;
|
|
|
|
log_info("Importing module %s\n", modname.c_str());
|
|
|
|
if (node->data_dict.count("cells")) {
|
|
JsonNode *cell_parent = node->data_dict.at("cells");
|
|
//
|
|
//
|
|
// Loop through all of the logic elements in a flattened design
|
|
//
|
|
//
|
|
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]);
|
|
json_import_cell(design, modname, here,
|
|
cell_parent->data_dict_keys[cellid]);
|
|
}
|
|
}
|
|
|
|
if (node->data_dict.count("ports")) {
|
|
JsonNode *ports_parent = node->data_dict.at("ports");
|
|
|
|
// N.B. ports must be imported after cells for tristate behaviour
|
|
// to be correct
|
|
// Loop through all ports
|
|
for (int portid = 0; portid < GetSize(ports_parent->data_dict_keys);
|
|
portid++) {
|
|
JsonNode *here, *param_node;
|
|
|
|
here = ports_parent->data_dict.at(
|
|
ports_parent->data_dict_keys[portid]);
|
|
json_import_toplevel_port(design, modname,
|
|
ports_parent->data_dict_keys[portid],
|
|
here);
|
|
}
|
|
}
|
|
check_all_nets_driven(design);
|
|
}
|
|
|
|
struct JsonFrontend
|
|
{
|
|
// JsonFrontend() : Frontend("json", "read JSON file") { }
|
|
JsonFrontend(void) {}
|
|
virtual void help() {}
|
|
virtual void execute(std::istream *&f, std::string &filename,
|
|
Design *design)
|
|
{
|
|
// log_header(design, "Executing JSON frontend.\n");
|
|
|
|
JsonNode root(*f);
|
|
|
|
if (root.type != 'D')
|
|
log_error("JSON root node is not a dictionary.\n");
|
|
|
|
if (root.data_dict.count("modules") != 0) {
|
|
JsonNode *modules = root.data_dict.at("modules");
|
|
|
|
if (modules->type != 'D')
|
|
log_error("JSON modules node is not a dictionary.\n");
|
|
|
|
for (auto &it : modules->data_dict)
|
|
json_import(design, it.first, it.second);
|
|
}
|
|
}
|
|
}; // JsonFrontend;
|
|
|
|
}; // End Namespace JsonParser
|
|
|
|
void parse_json_file(std::istream *&f, std::string &filename, Design *design)
|
|
{
|
|
auto *parser = new JsonParser::JsonFrontend();
|
|
parser->execute(f, filename, design);
|
|
}
|
|
|
|
NEXTPNR_NAMESPACE_END
|