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xilinx_srl to use 'slice' features of pmgen for word level

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This commit is contained in:
Eddie Hung 2019-08-23 12:22:06 -07:00
parent f4fd41d5d2
commit 18b64609c2
2 changed files with 49 additions and 32 deletions
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47
passes/pmgen/xilinx_srl.cc
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@ -105,13 +105,15 @@ void run_variable(xilinx_srl_pm &pm)
log("Found variable chain of length %d (%s):\n", GetSize(ud.chain), log_id(st.first->type));
auto last_cell = ud.chain.back();
auto last_cell = ud.chain.back().first;
SigSpec initval;
for (auto cell : ud.chain) {
for (const auto &i : ud.chain) {
auto cell = i.first;
auto slice = i.second;
log_debug(" %s\n", log_id(cell));
if (cell->type.in(ID($_DFF_N_), ID($_DFF_P_), ID($_DFFE_NN_), ID($_DFFE_NP_), ID($_DFFE_PN_), ID($_DFFE_PP_))) {
SigBit Q = cell->getPort(ID(Q));
if (cell->type.in(ID($_DFF_N_), ID($_DFF_P_), ID($_DFFE_NN_), ID($_DFFE_NP_), ID($_DFFE_PN_), ID($_DFFE_PP_), ID($dff), ID($dffe))) {
SigBit Q = cell->getPort(ID(Q))[slice];
log_assert(Q.wire);
auto it = Q.wire->attributes.find(ID(init));
if (it != Q.wire->attributes.end()) {
@ -123,7 +125,7 @@ void run_variable(xilinx_srl_pm &pm)
else
log_abort();
if (cell != last_cell)
pm.autoremove(cell);
cell->connections_.at(ID(Q))[slice] = pm.module->addWire(NEW_ID);
}
pm.autoremove(st.shiftx);
@ -131,23 +133,36 @@ void run_variable(xilinx_srl_pm &pm)
SigBit Q = st.first->getPort(ID(Q));
c->setPort(ID(Q), Q);
if (c->type.in(ID($_DFF_N_), ID($_DFF_P_), ID($_DFFE_NN_), ID($_DFFE_NP_), ID($_DFFE_PN_), ID($_DFFE_PP_))) {
c->parameters.clear();
c->setParam(ID(DEPTH), GetSize(ud.chain));
c->setParam(ID(INIT), initval.as_const());
if (c->type.in(ID($_DFF_N_), ID($_DFF_P_), ID($_DFFE_NN_), ID($_DFFE_NP_), ID($_DFFE_PN_), ID($_DFFE_PP_), ID($dff), ID($dffe))) {
Const clkpol, enpol;
if (c->type.in(ID($_DFF_P_), ID($_DFFE_PN_), ID($_DFFE_PP_)))
c->setParam(ID(CLKPOL), 1);
else if (c->type.in(ID($_DFF_N_), ID($DFFE_NN_), ID($_DFFE_NP_), ID(FDRE_1)))
c->setParam(ID(CLKPOL), 0);
clkpol = 1;
else if (c->type.in(ID($_DFF_N_), ID($DFFE_NN_), ID($_DFFE_NP_)))
clkpol = 0;
else if (c->type.in(ID($dff), ID($dffe))) {
clkpol = c->getParam(ID(CLK_POLARITY));
c->setPort(ID(C), c->getPort(ID(CLK)));
c->unsetPort(ID(CLK));
}
else
log_abort();
if (c->type.in(ID($_DFFE_NP_), ID($_DFFE_PP_)))
c->setParam(ID(ENPOL), 1);
enpol = 1;
else if (c->type.in(ID($_DFFE_NN_), ID($_DFFE_PN_)))
c->setParam(ID(ENPOL), 0);
enpol = 0;
else if (c->type.in(ID($dffe))) {
enpol = c->getParam(ID(EN_POLARITY));
c->setPort(ID(E), c->getPort(ID(EN)));
c->unsetPort(ID(EN));
}
else
c->setParam(ID(ENPOL), 2);
if (c->type.in(ID($_DFF_N_), ID($_DFF_P_)))
enpol = 2;
c->parameters.clear();
c->setParam(ID(DEPTH), GetSize(ud.chain));
c->setParam(ID(INIT), initval.as_const());
c->setParam(ID(CLKPOL), clkpol);
c->setParam(ID(ENPOL), enpol);
if (c->type.in(ID($_DFF_N_), ID($_DFF_P_), ID($dff)))
c->setPort(ID(E), State::S1);
c->setPort(ID(L), st.shiftx->getPort(ID(B)));
c->setPort(ID(Q), st.shiftx->getPort(ID(Y)));