diff options
Diffstat (limited to 'mistral/arch.cc')
-rw-r--r-- | mistral/arch.cc | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mistral/arch.cc b/mistral/arch.cc index 5fc2a0b4..ffe6e833 100644 --- a/mistral/arch.cc +++ b/mistral/arch.cc @@ -305,6 +305,23 @@ WireId Arch::add_wire(int x, int y, IdString name, uint64_t flags) } } +void Arch::reserve_route(WireId src, WireId dst) +{ + auto &dst_data = wires.at(dst); + int idx = -1; + + for (int i = 0; i < int(dst_data.wires_uphill.size()); i++) { + if (dst_data.wires_uphill.at(i) == src) { + idx = i; + break; + } + } + + NPNR_ASSERT(idx != -1); + + dst_data.flags = WireInfo::RESERVED_ROUTE | unsigned(idx); +} + bool Arch::wires_connected(WireId src, WireId dst) const { PipId pip(src.node, dst.node); |