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| author | Eddie Hung <eddieh@ece.ubc.ca> | 2018-07-31 16:18:08 -0700 |
|---|---|---|
| committer | Eddie Hung <eddieh@ece.ubc.ca> | 2018-07-31 16:18:08 -0700 |
| commit | 2d750537441b91a6e8bc5bf757279afc89265fb2 (patch) | |
| tree | fd3316769be53f9828eed36d7098e7bfaf7025ee /generic | |
| parent | 2a91aea0a6d17f6d00edb391cc543ec9409e96e5 (diff) | |
| parent | a82f6f410595de26e82eaf4818e41036f0bc2f9c (diff) | |
| download | nextpnr-2d750537441b91a6e8bc5bf757279afc89265fb2.tar.gz nextpnr-2d750537441b91a6e8bc5bf757279afc89265fb2.tar.bz2 nextpnr-2d750537441b91a6e8bc5bf757279afc89265fb2.zip | |
Merge remote-tracking branch 'origin/estdelay' into redist_slack
Conflicts:
ecp5/arch.cc
generic/arch.cc
ice40/arch.cc
Diffstat (limited to 'generic')
| -rw-r--r-- | generic/arch.cc | 11 | ||||
| -rw-r--r-- | generic/arch.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/generic/arch.cc b/generic/arch.cc index daaa8118..43015685 100644 --- a/generic/arch.cc +++ b/generic/arch.cc @@ -403,6 +403,17 @@ delay_t Arch::estimateDelay(WireId src, WireId dst) const return (dx + dy) * grid_distance_to_delay; } +delay_t Arch::predictDelay(const NetInfo *net_info, const PortRef &sink) const; +{ + const auto& driver = net_info->driver; + auto driver_loc = getBelLocation(driver.cell->bel); + auto sink_loc = getBelLocation(sink.cell->bel); + + int dx = abs(driver_loc.x - driver_loc.x); + int dy = abs(sink_loc.y - sink_locy); + return (dx + dy) * grid_distance_to_delay; +} + delay_t Arch::getBudgetOverride(NetInfo *net_info, int user_idx, delay_t budget) const { return budget; } // --------------------------------------------------------------- diff --git a/generic/arch.h b/generic/arch.h index de06f730..154a2352 100644 --- a/generic/arch.h +++ b/generic/arch.h @@ -194,6 +194,7 @@ struct Arch : BaseCtx const std::vector<GroupId> &getGroupGroups(GroupId group) const; delay_t estimateDelay(WireId src, WireId dst) const; + delay_t predictDelay(const NetInfo *net_info, const PortRef &sink) const; delay_t getDelayEpsilon() const { return 0.01; } delay_t getRipupDelayPenalty() const { return 1.0; } float getDelayNS(delay_t v) const { return v; } |