diff options
Diffstat (limited to 'icetime')
| -rw-r--r-- | icetime/icetime.cc | 66 |
1 files changed, 47 insertions, 19 deletions
diff --git a/icetime/icetime.cc b/icetime/icetime.cc index 6c1e136..9d3a5cf 100644 --- a/icetime/icetime.cc +++ b/icetime/icetime.cc @@ -852,38 +852,66 @@ void make_seg_cell(int net, const net_segment_t &seg) return; } - if (seg.name == "io_global/inclk" || seg.name == "io_global/outclk") + if (seg.name == "io_global/inclk" || seg.name == "io_global/outclk" || seg.name == "io_global/cen") { - for (int i = 0; i < 2; i++) + for (int z = 0; z < 2; z++) { - if (seg.name == "io_global/inclk") - { - std::tuple<int, int, std::string> din0_key(seg.x, seg.y, stringf("io_%d/D_IN_%d", i, 0)); - std::tuple<int, int, std::string> din1_key(seg.x, seg.y, stringf("io_%d/D_IN_%d", i, 1)); + std::string pintype; + std::pair<int, int> bitpos; - if (x_y_name_net.count(din0_key) == 0 && x_y_name_net.count(din1_key) == 0) - continue; + for (int i = 0; i < 6; i++) { + bitpos = io_tile_bits[stringf("IOB_%d.PINTYPE_%d", z, 5-i)][0]; + pintype.push_back(config_bits[seg.x][seg.y][bitpos.first][bitpos.second] ? '1' : '0'); } - if (seg.name == "io_global/outclk") - { - std::tuple<int, int, std::string> dout0_key(seg.x, seg.y, stringf("io_%d/D_OUT_%d", i, 0)); - std::tuple<int, int, std::string> dout1_key(seg.x, seg.y, stringf("io_%d/D_OUT_%d", i, 1)); + bool use_inclk = false; + bool use_outclk = false; + + if (pintype[5-0] == '0') + use_inclk = true; + + if (pintype[5-5] == '1' && pintype[5-4] == '1') + use_outclk = true; - if (x_y_name_net.count(dout0_key) == 0 && x_y_name_net.count(dout1_key) == 0) - continue; + if (pintype[5-5] == '1' || pintype[5-4] == '1') { + if (pintype[5-2] == '1' || pintype[5-3] == '0') + use_outclk = true; } - auto cell = make_seg_pre_io(seg.x, seg.y, i); + std::tuple<int, int, std::string> din0_key(seg.x, seg.y, stringf("io_%d/D_IN_%d", z, 0)); + std::tuple<int, int, std::string> din1_key(seg.x, seg.y, stringf("io_%d/D_IN_%d", z, 1)); + + if (x_y_name_net.count(din0_key) == 0 && x_y_name_net.count(din1_key) == 0) + use_inclk = false; + + std::tuple<int, int, std::string> dout0_key(seg.x, seg.y, stringf("io_%d/D_OUT_%d", z, 0)); + std::tuple<int, int, std::string> dout1_key(seg.x, seg.y, stringf("io_%d/D_OUT_%d", z, 1)); + + if (x_y_name_net.count(dout0_key) == 0 && x_y_name_net.count(dout1_key) == 0) + use_outclk = false; - if (seg.name == "io_global/inclk") + if (!use_inclk && !use_outclk) + continue; + + auto cell = make_seg_pre_io(seg.x, seg.y, z); + + if (seg.name == "io_global/inclk" && use_inclk) { netlist_cells[cell]["INPUTCLK"] = net_name(seg.net); + make_inmux(seg.x, seg.y, seg.net, "ClkMux"); + } - if (seg.name == "io_global/outclk") + if (seg.name == "io_global/outclk" && use_outclk) { netlist_cells[cell]["OUTPUTCLK"] = net_name(seg.net); + make_inmux(seg.x, seg.y, seg.net, "ClkMux"); + } - if (netlist_cells[cell]["CLOCKENABLE"] == "") - netlist_cells[cell]["CLOCKENABLE"] = "vcc"; + if (seg.name == "io_global/cen") { + netlist_cells[cell]["CLOCKENABLE"] = net_name(seg.net); + make_inmux(seg.x, seg.y, seg.net, "CEMux"); + } else { + if (netlist_cells[cell]["CLOCKENABLE"] == "") + netlist_cells[cell]["CLOCKENABLE"] = "vcc"; + } } } } |