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ice40: Implement getRouteBoundingBox for router2

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2020-02-03 12:00:05 +00:00
parent 7123209324
commit ce144addb3
2 changed files with 26 additions and 0 deletions
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24
ice40/arch.cc
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@ -1255,6 +1255,30 @@ void Arch::assignCellInfo(CellInfo *cell)
}
}
ArcBounds Arch::getRouteBoundingBox(WireId src, WireId dst) const
{
ArcBounds bb;
int src_x = chip_info->wire_data[src.index].x;
int src_y = chip_info->wire_data[src.index].y;
int dst_x = chip_info->wire_data[dst.index].x;
int dst_y = chip_info->wire_data[dst.index].y;
bb.x0 = src_x;
bb.y0 = src_y;
bb.x1 = src_x;
bb.y1 = src_y;
auto extend = [&](int x, int y) {
bb.x0 = std::min(bb.x0, x);
bb.x1 = std::max(bb.x1, x);
bb.y0 = std::min(bb.y0, y);
bb.y1 = std::max(bb.y1, y);
};
extend(dst_x, dst_y);
return bb;
}
#ifdef WITH_HEAP
const std::string Arch::defaultPlacer = "heap";
#else

2
ice40/arch.h
View File

@ -826,6 +826,8 @@ struct Arch : BaseCtx
uint32_t getDelayChecksum(delay_t v) const { return v; }
bool getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay_t &budget) const;
ArcBounds getRouteBoundingBox(WireId src, WireId dst) const;
// -------------------------------------------------
bool pack();