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block some pips

This commit is contained in:
Miodrag Milanovic 2025-11-03 11:12:26 +01:00
parent af62a9abbd
commit bbcfe052bb
2 changed files with 8 additions and 2 deletions
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9
himbaechel/uarch/gatemate/gatemate.cc
View File

@ -308,6 +308,7 @@ void GateMateImpl::postPlace()
repack();
ctx->assignArchInfo();
used_cpes.resize(ctx->getGridDimX() * ctx->getGridDimY());
block_perm.resize(ctx->getGridDimX() * ctx->getGridDimY());
for (auto &cell : ctx->cells) {
// We need to skip CPE_MULT since using CP outputs is mandatory
// even if output is actually not connected
@ -317,14 +318,18 @@ void GateMateImpl::postPlace()
marked_used = true;
if (marked_used)
used_cpes[cell.second.get()->bel.tile] = true;
if (cell.second.get()->type.in(id_CPE_MX4, id_CPE_MULT))
block_perm[cell.second.get()->bel.tile] = true;
}
}
bool GateMateImpl::checkPipAvail(PipId pip) const
{
const auto &extra_data = *pip_extra_data(pip);
if (extra_data.type != PipExtra::PIP_EXTRA_MUX || (extra_data.flags & MUX_ROUTING) == 0)
if (extra_data.type != PipExtra::PIP_EXTRA_MUX || (extra_data.flags & (MUX_ROUTING | MUX_PERMUTATION)) == 0)
return true;
if (used_cpes[pip.tile])
if ((extra_data.flags & MUX_ROUTING) && used_cpes[pip.tile])
return false;
if ((extra_data.flags & MUX_PERMUTATION) && (extra_data.value!=0) && block_perm[pip.tile])
return false;
return true;
}

1
himbaechel/uarch/gatemate/gatemate.h
View File

@ -97,6 +97,7 @@ struct GateMateImpl : HimbaechelAPI
pool<IdString> multiplier_zero_drivers;
std::vector<CellInfo *> multipliers;
std::vector<bool> used_cpes;
std::vector<bool> block_perm;
int fpga_mode;
int timing_mode;
std::map<const NetInfo *, int> global_signals;