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| author | Clifford Wolf <clifford@clifford.at> | 2018-07-30 15:35:40 +0200 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2018-07-30 15:35:40 +0200 |
| commit | 0daffec2a0efdbea36201eeb5666d208a10d0226 (patch) | |
| tree | effbd8bfd41387213ee0ae3c899e1b25b47e4476 /ice40/arch.cc | |
| parent | b5f90d381481dc3658c408b162aa433e183f79f4 (diff) | |
| download | nextpnr-0daffec2a0efdbea36201eeb5666d208a10d0226.tar.gz nextpnr-0daffec2a0efdbea36201eeb5666d208a10d0226.tar.bz2 nextpnr-0daffec2a0efdbea36201eeb5666d208a10d0226.zip | |
Add predictDelay Arch API
Signed-off-by: Clifford Wolf <clifford@clifford.at>
Diffstat (limited to 'ice40/arch.cc')
| -rw-r--r-- | ice40/arch.cc | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/ice40/arch.cc b/ice40/arch.cc index 3803f842..91c20b42 100644 --- a/ice40/arch.cc +++ b/ice40/arch.cc @@ -579,6 +579,22 @@ delay_t Arch::estimateDelay(WireId src, WireId dst) const int xd = x2 - x1, yd = y2 - y1; int xscale = 120, yscale = 120, offset = 0; + return xscale * abs(xd) + yscale * abs(yd) + offset; +} + +delay_t Arch::predictDelay(WireId src, WireId dst) const +{ + NPNR_ASSERT(src != WireId()); + int x1 = chip_info->wire_data[src.index].x; + int y1 = chip_info->wire_data[src.index].y; + + NPNR_ASSERT(dst != WireId()); + int x2 = chip_info->wire_data[dst.index].x; + int y2 = chip_info->wire_data[dst.index].y; + + int xd = x2 - x1, yd = y2 - y1; + int xscale = 120, yscale = 120, offset = 0; + // if (chip_info->wire_data[src.index].type == WIRE_TYPE_SP4_VERT) { // yd = yd < -4 ? yd + 4 : (yd < 0 ? 0 : yd); // offset = 500; |