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author | David Shah <davey1576@gmail.com> | 2018-07-20 16:27:27 +0000 |
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committer | David Shah <davey1576@gmail.com> | 2018-07-20 16:27:27 +0000 |
commit | 0d6f6f410d456b6dc456b5c1f919f3620926b6af (patch) | |
tree | a051a9eef682ab922c474850d235f301c2c708fd /ice40/arch.cc | |
parent | 6c835d76f27af79813299419780c039eb2a8b02e (diff) | |
parent | fd8239e170a7391d9c25d8681083507d9960abef (diff) | |
download | nextpnr-0d6f6f410d456b6dc456b5c1f919f3620926b6af.tar.gz nextpnr-0d6f6f410d456b6dc456b5c1f919f3620926b6af.tar.bz2 nextpnr-0d6f6f410d456b6dc456b5c1f919f3620926b6af.zip |
Merge branch 'gridapi' into 'master'
Gridapi
See merge request SymbioticEDA/nextpnr!11
Diffstat (limited to 'ice40/arch.cc')
-rw-r--r-- | ice40/arch.cc | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/ice40/arch.cc b/ice40/arch.cc index 786d8ba1..e9a7d2b6 100644 --- a/ice40/arch.cc +++ b/ice40/arch.cc @@ -255,11 +255,52 @@ BelId Arch::getBelByName(IdString name) const return ret; } +BelId Arch::getBelByLocation(Loc loc) const +{ + BelId bel; + + if (bel_by_loc.empty()) { + for (int i = 0; i < chip_info->num_bels; i++) { + BelId b; + b.index = i; + bel_by_loc[getBelLocation(b)] = i; + } + } + + auto it = bel_by_loc.find(loc); + if (it != bel_by_loc.end()) + bel.index = it->second; + + return bel; +} + +BelRange Arch::getBelsByTile(int x, int y) const +{ + // In iCE40 chipdb bels at the same tile are consecutive and dense z ordinates are used + BelRange br; + + Loc loc; + loc.x = x; + loc.y = y; + loc.z = 0; + + br.b.cursor = Arch::getBelByLocation(loc).index; + br.e.cursor = br.b.cursor; + + if (br.e.cursor != -1) { + while (br.e.cursor < chip_info->num_bels && + chip_info->bel_data[br.e.cursor].x == x && + chip_info->bel_data[br.e.cursor].y == y) + br.e.cursor++; + } + + return br; +} + BelRange Arch::getBelsAtSameTile(BelId bel) const { BelRange br; NPNR_ASSERT(bel != BelId()); - // This requires Bels at the same tile are consecutive int x = chip_info->bel_data[bel.index].x; int y = chip_info->bel_data[bel.index].y; int start = bel.index, end = bel.index; |