From 72eda94a66c8c4938a713c9ae49d560e6b33574f Mon Sep 17 00:00:00 2001 From: Eddie Hung Date: Wed, 5 Jun 2019 12:33:55 -0700 Subject: [PATCH] Continue support for ShregmapTechXilinx7Static --- passes/techmap/shregmap.cc | 111 +++++++++++++++++++++++++++---------- 1 file changed, 81 insertions(+), 30 deletions(-) diff --git a/passes/techmap/shregmap.cc b/passes/techmap/shregmap.cc index ef285160f..325db081b 100644 --- a/passes/techmap/shregmap.cc +++ b/passes/techmap/shregmap.cc @@ -28,8 +28,9 @@ struct ShregmapTech virtual ~ShregmapTech() { } virtual void init(const Module * /*module*/, const SigMap &/*sigmap*/) {} virtual void non_chain_user(const SigBit &/*bit*/, const Cell* /*cell*/, IdString /*port*/) {} + virtual bool analyze_first(const Cell* /*first_cell*/, const SigMap &/*sigmap*/) { return true; } virtual bool analyze(vector &taps, const vector &qbits) = 0; - virtual RTLIL::Cell* fixup(Cell *cell, dict &taps) = 0; + virtual Cell* fixup(Cell *cell, dict &taps) = 0; }; struct ShregmapOptions @@ -71,7 +72,7 @@ struct ShregmapTechGreenpak4 : ShregmapTech return true; } - virtual RTLIL::Cell* fixup(Cell *cell, dict &taps) override + virtual Cell* fixup(Cell *cell, dict &taps) override { auto D = cell->getPort("\\D"); auto C = cell->getPort("\\C"); @@ -99,18 +100,61 @@ struct ShregmapTechXilinx7Static : ShregmapTech ShregmapTechXilinx7Static(const ShregmapOptions &opts) : opts(opts) {} - virtual bool analyze(vector &taps, const vector &/*qbits*/) override + virtual bool analyze_first(const Cell* first_cell, const SigMap &sigmap) override { - if (GetSize(taps) == 1) - return taps[0] >= opts.minlen-1; - - if (taps.back() < opts.minlen-1) - return false; - + if (first_cell->type.in("\\FDRE", "\\FDRE_1")) { + bool is_R_inverted = false; + if (first_cell->hasParam("\\IS_R_INVERTED")) + is_R_inverted = first_cell->getParam("\\IS_R_INVERTED").as_bool(); + SigBit R = sigmap(first_cell->getPort("\\R")); + if (R != RTLIL::S0 && R != RTLIL::S1) + return false; + if ((!is_R_inverted && R != RTLIL::S0) || (is_R_inverted && R != RTLIL::S1)) + return false; + return true; + } + if (first_cell->type.in("\\FDSE", "\\FDSE_1")) { + bool is_S_inverted = false; + if (first_cell->hasParam("\\IS_S_INVERTED")) + is_S_inverted = first_cell->getParam("\\IS_S_INVERTED").as_bool(); + SigBit S = sigmap(first_cell->getPort("\\S")); + if (S != RTLIL::S0 && S != RTLIL::S1) + return false; + if ((!is_S_inverted && S != RTLIL::S0) || (is_S_inverted && S != RTLIL::S1)) + return false; + return true; + } + if (first_cell->type.in("\\FDCE", "\\FDCE_1")) { + bool is_CLR_inverted = false; + if (first_cell->hasParam("\\IS_CLR_INVERTED")) + is_CLR_inverted = first_cell->getParam("\\IS_CLR_INVERTED").as_bool(); + SigBit CLR = sigmap(first_cell->getPort("\\CLR")); + if (CLR != RTLIL::S0 && CLR != RTLIL::S1) + return false; + if ((!is_CLR_inverted && CLR != RTLIL::S0) || (is_CLR_inverted && CLR != RTLIL::S1)) + return false; + return true; + } + if (first_cell->type.in("\\FDPE", "\\FDPE_1")) { + bool is_PRE_inverted = false; + if (first_cell->hasParam("\\IS_PRE_INVERTED")) + is_PRE_inverted = first_cell->getParam("\\IS_PRE_INVERTED").as_bool(); + SigBit PRE = sigmap(first_cell->getPort("\\PRE")); + if (PRE != RTLIL::S0 && PRE != RTLIL::S1) + return false; + if ((!is_PRE_inverted && PRE != RTLIL::S0) || (is_PRE_inverted && PRE != RTLIL::S1)) + return false; + return true; + } return true; } - virtual RTLIL::Cell* fixup(Cell *cell, dict &/*taps*/) override + virtual bool analyze(vector &taps, const vector &/*qbits*/) override + { + return GetSize(taps) == 1 && taps[0] >= opts.minlen-1; + } + + virtual Cell* fixup(Cell *cell, dict &/*taps*/) override { auto newcell = cell->module->addCell(NEW_ID, "$__SHREG_"); newcell->set_src_attribute(cell->get_src_attribute()); @@ -136,16 +180,17 @@ struct ShregmapTechXilinx7Static : ShregmapTech if (cell->hasPort("\\E")) newcell->setPort("\\E", cell->getPort("\\E")); } - else if (cell->type.in("$__SHREG_FDRE_", "$__SHREG_FDSE_", "$__SHREG_FDCE_", "$__SHREG_FDPE_")) { - if (cell->getParam("\\IS_C_INVERTED").as_bool()) - newcell->setParam("\\CLKPOL", 0); - else - newcell->setParam("\\CLKPOL", 1); + else if (cell->type.in("$__SHREG_FDRE", "$__SHREG_FDRE_1","$__SHREG_FDSE", "$__SHREG_FDSE_1", + "$__SHREG_FDCE", "$__SHREG_FDCE_1", "$__SHREG_FDPE", "$__SHREG_FDPE_1")) { + int param_clkpol = 1; + if (cell->hasParam("\\IS_C_INVERTED") && cell->getParam("\\IS_C_INVERTED").as_bool()) + param_clkpol = 0; + newcell->setParam("\\CLKPOL", param_clkpol); newcell->setParam("\\ENPOL", 1); newcell->setPort("\\E", cell->getPort("\\CE")); } - else if (cell->type.in("$__SHREG_FDRE_1_", "$__SHREG_FDSE_1_", "$__SHREG_FDCE_1_", "$__SHREG_FDPE_1_")) { + else if (cell->type.in("$__SHREG_FDRE_1", "$__SHREG_FDSE_1", "$__SHREG_FDCE_1", "$__SHREG_FDPE_1")) { newcell->setParam("\\CLKPOL", 0); newcell->setPort("\\E", cell->getPort("\\CE")); @@ -215,13 +260,14 @@ struct ShregmapTechXilinx7Dynamic : ShregmapTechXilinx7Static Cell *shiftx = nullptr; int group = 0; for (int i = 0; i < GetSize(taps); ++i) { + // Check taps are sequential + if (i != taps[i]) + return false; + auto it = sigbit_to_shiftx_offset.find(qbits[i]); if (it == sigbit_to_shiftx_offset.end()) return false; - // Check taps are sequential - if (i != taps[i]) - return false; // Check taps are not connected to a shift register, // or sequential to the same shift register if (i == 0) { @@ -268,7 +314,7 @@ struct ShregmapTechXilinx7Dynamic : ShregmapTechXilinx7Static return true; } - virtual RTLIL::Cell* fixup(Cell *cell, dict &taps) override + virtual Cell* fixup(Cell *cell, dict &taps) override { const auto &tap = *taps.begin(); auto bit = tap.second; @@ -276,7 +322,7 @@ struct ShregmapTechXilinx7Dynamic : ShregmapTechXilinx7Static auto it = sigbit_to_shiftx_offset.find(bit); log_assert(it != sigbit_to_shiftx_offset.end()); - RTLIL::Cell* newcell = ShregmapTechXilinx7Static::fixup(cell, taps); + Cell* newcell = ShregmapTechXilinx7Static::fixup(cell, taps); log_assert(newcell); log_assert(newcell->type == "$__SHREG_"); newcell->type = "$__XILINX_SHREG_"; @@ -451,6 +497,11 @@ struct ShregmapWorker if (opts.tech) { + if (!opts.tech->analyze_first(first_cell, sigmap)) { + cursor += depth; + continue; + } + vector qbits; vector taps; @@ -724,16 +775,16 @@ struct ShregmapPass : public Pass { opts.ffcells["$_DFFE_PN_"] = make_pair(IdString("\\D"), IdString("\\Q")); opts.ffcells["$_DFFE_NP_"] = make_pair(IdString("\\D"), IdString("\\Q")); opts.ffcells["$_DFFE_NN_"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDRE"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDRE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDSE"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDSE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDCE"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDCE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDPE"] = make_pair(IdString("\\D"), IdString("\\Q")); - opts.ffcells["FDPE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDRE"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDRE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDSE"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDSE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDCE"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDCE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDPE"] = make_pair(IdString("\\D"), IdString("\\Q")); + opts.ffcells["\\FDPE_1"] = make_pair(IdString("\\D"), IdString("\\Q")); if (tech == "xilinx_static") - opts.tech = new ShregmapTechXilinx7Dynamic(opts); + opts.tech = new ShregmapTechXilinx7Static(opts); else if (tech == "xilinx_dynamic") opts.tech = new ShregmapTechXilinx7Dynamic(opts); } else { -- 2.30.2