aboutsummaryrefslogtreecommitdiffstats
path: root/techlibs/efinix/efinix_gbuf.cc
diff options
context:
space:
mode:
Diffstat (limited to 'techlibs/efinix/efinix_gbuf.cc')
-rw-r--r--techlibs/efinix/efinix_gbuf.cc119
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