luke
/
icestorm
mirror of https://github.com/YosysHQ/icestorm.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Progress in icetime

This commit is contained in:
Clifford Wolf 2015-10-20 10:29:08 +02:00
parent de5ed1fec6
commit 9c6e9eff72
1 changed files with 41 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
icetime/icetime.cc
View File

@ -304,6 +304,44 @@ std::string make_seg_pre_io(int x, int y, int z)
return cell;
}
void make_odrv(int x, int y, int src)
{
for (int dst : net_buffers[src])
{
auto cell = stringf("odrv_%d_%d_%d_%d", x, y, src, dst);
if (netlist_cell_types.count(cell))
continue;
bool is4 = false, is12 = false;
for (auto &seg : net_to_segments[dst]) {
if (seg.segment_name.substr(0, 4) == "sp4_") is4 = true;
if (seg.segment_name.substr(0, 5) == "sp12_") is12 = true;
}
assert(is4 != is12);
netlist_cell_types[cell] = is4 ? "Odrv4" : "Odrv12";
netlist_cells[cell]["I"] = stringf("net_%d", src);
netlist_cells[cell]["O"] = stringf("net_%d", dst);
}
}
void make_inmux(int x, int y, int dst)
{
for (int src : net_rbuffers[dst])
{
auto cell = stringf("inmux_%d_%d_%d_%d", x, y, src, dst);
if (netlist_cell_types.count(cell))
continue;
netlist_cell_types[cell] = config_tile_type[x][y] == "io" ? "IoInMux" : "InMux";
netlist_cells[cell]["I"] = stringf("net_%d", src);
netlist_cells[cell]["O"] = stringf("net_%d", dst);
}
}
void make_seg_cell(int net, const net_segment_name &seg)
{
int a, b;
@ -311,12 +349,14 @@ void make_seg_cell(int net, const net_segment_name &seg)
if (sscanf(seg.segment_name.c_str(), "io_%d/D_IN_%d", &a, &b) == 2) {
auto cell = make_seg_pre_io(seg.tile_x, seg.tile_y, a);
netlist_cells[cell][stringf("DIN%d", b)] = stringf("net_%d", net);
make_odrv(seg.tile_x, seg.tile_y, net);
return;
}
if (sscanf(seg.segment_name.c_str(), "io_%d/D_OUT_%d", &a, &b) == 2) {
auto cell = make_seg_pre_io(seg.tile_x, seg.tile_y, a);
netlist_cells[cell][stringf("DOUT%d", b)] = stringf("net_%d", net);
make_inmux(seg.tile_x, seg.tile_y, net);
return;
}
}
@ -372,7 +412,7 @@ int main(int argc, char **argv)
fprintf(fout, "module chip;\n");
for (int net : used_nets)
fprintf(fout, " wire net_%d;\n", net);
fprintf(fout, " (* keep *) wire net_%d;\n", net);
for (int net : used_nets)
for (auto seg : net_to_segments[net])