diff options
Diffstat (limited to 'techlibs/efinix/efinix_gbuf.cc')
-rw-r--r-- | techlibs/efinix/efinix_gbuf.cc | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/techlibs/efinix/efinix_gbuf.cc b/techlibs/efinix/efinix_gbuf.cc deleted file mode 100644 index ae191359a..000000000 --- a/techlibs/efinix/efinix_gbuf.cc +++ /dev/null @@ -1,119 +0,0 @@ -/* - * yosys -- Yosys Open SYnthesis Suite - * - * Copyright (C) 2019 Miodrag Milanovic <miodrag@symbioticeda.com> - * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at> - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - * - */ - -#include "kernel/yosys.h" -#include "kernel/sigtools.h" - -USING_YOSYS_NAMESPACE -PRIVATE_NAMESPACE_BEGIN - -static void handle_gbufs(Module *module) -{ - SigMap sigmap(module); - - pool<SigBit> clk_bits; - dict<SigBit, SigBit> rewrite_bits; - vector<pair<Cell*, SigBit>> pad_bits; - - for (auto cell : module->cells()) - { - if (cell->type == ID(EFX_FF)) { - for (auto bit : sigmap(cell->getPort(ID::CLK))) - clk_bits.insert(bit); - } - if (cell->type == ID(EFX_RAM_5K)) { - for (auto bit : sigmap(cell->getPort(ID(RCLK)))) - clk_bits.insert(bit); - for (auto bit : sigmap(cell->getPort(ID(WCLK)))) - clk_bits.insert(bit); - } - } - - for (auto wire : vector<Wire*>(module->wires())) - { - if (!wire->port_input) - continue; - - for (int index = 0; index < GetSize(wire); index++) - { - SigBit bit(wire, index); - SigBit canonical_bit = sigmap(bit); - - if (!clk_bits.count(canonical_bit)) - continue; - - Cell *c = module->addCell(NEW_ID, ID(EFX_GBUFCE)); - SigBit new_bit = module->addWire(NEW_ID); - c->setParam(ID(CE_POLARITY), State::S1); - c->setPort(ID::O, new_bit); - c->setPort(ID(CE), State::S1); - pad_bits.push_back(make_pair(c, bit)); - rewrite_bits[canonical_bit] = new_bit; - - log("Added %s cell %s for port bit %s.\n", log_id(c->type), log_id(c), log_signal(bit)); - } - } - - auto rewrite_function = [&](SigSpec &s) { - for (auto &bit : s) { - SigBit canonical_bit = sigmap(bit); - if (rewrite_bits.count(canonical_bit)) - bit = rewrite_bits.at(canonical_bit); - } - }; - - module->rewrite_sigspecs(rewrite_function); - - for (auto &it : pad_bits) - it.first->setPort(ID::I, it.second); -} - -struct EfinixGbufPass : public Pass { - EfinixGbufPass() : Pass("efinix_gbuf", "Efinix: insert global clock buffers") { } - void help() override - { - // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| - log("\n"); - log(" efinix_gbuf [options] [selection]\n"); - log("\n"); - log("Add Efinix global clock buffers to top module as needed.\n"); - log("\n"); - } - void execute(std::vector<std::string> args, RTLIL::Design *design) override - { - log_header(design, "Executing efinix_gbuf pass (insert global clock buffers).\n"); - - size_t argidx; - for (argidx = 1; argidx < args.size(); argidx++) - { - break; - } - extra_args(args, argidx, design); - - Module *module = design->top_module(); - - if (module == nullptr) - log_cmd_error("No top module found.\n"); - - handle_gbufs(module); - } -} EfinixGbufPass; - -PRIVATE_NAMESPACE_END |