diff options
| author | Clifford Wolf <clifford@clifford.at> | 2015-10-20 10:29:08 +0200 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2015-10-20 10:29:08 +0200 |
| commit | 9c6e9eff7231c96ec9fae2e3d000ca8dba7283cd (patch) | |
| tree | e8c3665ad6d4822dbc58c0f5d180a41fe162143d | |
| parent | de5ed1fec6c39debe7441b26f0a93914b6e36bf6 (diff) | |
| download | icestorm-9c6e9eff7231c96ec9fae2e3d000ca8dba7283cd.tar.gz icestorm-9c6e9eff7231c96ec9fae2e3d000ca8dba7283cd.tar.bz2 icestorm-9c6e9eff7231c96ec9fae2e3d000ca8dba7283cd.zip | |
Progress in icetime
| -rw-r--r-- | icetime/icetime.cc | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/icetime/icetime.cc b/icetime/icetime.cc index f59ad12..f0a3369 100644 --- a/icetime/icetime.cc +++ b/icetime/icetime.cc @@ -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]) |