From 9a8939f0a4584c13bfceb978120cc8605ede03ee Mon Sep 17 00:00:00 2001 From: Miodrag Milanovic Date: Wed, 26 Jan 2022 15:50:38 +0100 Subject: [PATCH] Read fst and use data to set inputs --- passes/sat/sim.cc | 102 +++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 92 insertions(+), 10 deletions(-) diff --git a/passes/sat/sim.cc b/passes/sat/sim.cc index ba7519be5..99ea701d9 100644 --- a/passes/sat/sim.cc +++ b/passes/sat/sim.cc @@ -21,7 +21,7 @@ #include "kernel/sigtools.h" #include "kernel/celltypes.h" #include "kernel/mem.h" -#include "libs/fst/fstapi.h" +#include "kernel/fstdata.h" #include @@ -35,6 +35,7 @@ struct SimShared bool writeback = false; bool zinit = false; int rstlen = 1; + FstData *fst = nullptr; }; void zinit(State &v) @@ -52,7 +53,8 @@ void zinit(Const &v) struct SimInstance { SimShared *shared; - + + std::string scope; Module *module; Cell *instance; @@ -95,8 +97,8 @@ struct SimInstance dict> vcd_database; dict> fst_database; - SimInstance(SimShared *shared, Module *module, Cell *instance = nullptr, SimInstance *parent = nullptr) : - shared(shared), module(module), instance(instance), parent(parent), sigmap(module) + SimInstance(SimShared *shared, std::string scope, Module *module, Cell *instance = nullptr, SimInstance *parent = nullptr) : + shared(shared), scope(scope), module(module), instance(instance), parent(parent), sigmap(module) { log_assert(module); @@ -146,7 +148,7 @@ struct SimInstance Module *mod = module->design->module(cell->type); if (mod != nullptr) { - dirty_children.insert(new SimInstance(shared, mod, cell, this)); + dirty_children.insert(new SimInstance(shared, scope + "." + RTLIL::unescape_id(module->name), mod, cell, this)); } for (auto &port : cell->connections()) { @@ -674,6 +676,8 @@ struct SimWorker : SimShared struct fstContext *fstfile = nullptr; pool clock, clockn, reset, resetn; std::string timescale; + std::string sim_filename; + std::string scope; ~SimWorker() { @@ -708,10 +712,10 @@ struct SimWorker : SimShared void write_fst_header() { std::time_t t = std::time(nullptr); - fstWriterSetDate(fstfile, asctime(std::localtime(&t))); - fstWriterSetVersion(fstfile, yosys_version_str); + fstWriterSetDate(fstfile, asctime(std::localtime(&t))); + fstWriterSetVersion(fstfile, yosys_version_str); if (!timescale.empty()) - fstWriterSetTimescaleFromString(fstfile, timescale.c_str()); + fstWriterSetTimescaleFromString(fstfile, timescale.c_str()); fstWriterSetPackType(fstfile, FST_WR_PT_FASTLZ); fstWriterSetRepackOnClose(fstfile, 1); @@ -786,7 +790,7 @@ struct SimWorker : SimShared void run(Module *topmod, int numcycles) { log_assert(top == nullptr); - top = new SimInstance(this, topmod); + top = new SimInstance(this, scope, topmod); if (debug) log("\n===== 0 =====\n"); @@ -841,6 +845,65 @@ struct SimWorker : SimShared top->writeback(wbmods); } } + + void run_cosim(Module *topmod, int numcycles) + { + log_assert(top == nullptr); + top = new SimInstance(this, scope, topmod); + + fst = new FstData(sim_filename); + + std::vector fst_clock; + + for (auto portname : clock) + { + Wire *w = topmod->wire(portname); + if (!w) + log_error("Can't find port %s on module %s.\n", log_id(portname), log_id(top->module)); + if (!w->port_input) + log_error("Clock port %s on module %s is not input.\n", log_id(portname), log_id(top->module)); + fstHandle id = fst->getHandle(scope + "." + RTLIL::unescape_id(portname)); + if (id==0) + log_error("Can't find port %s.%s in FST.\n", scope.c_str(), log_id(portname)); + fst_clock.push_back(id); + } + for (auto portname : clockn) + { + Wire *w = topmod->wire(portname); + if (!w) + log_error("Can't find port %s on module %s.\n", log_id(portname), log_id(top->module)); + if (!w->port_input) + log_error("Clock port %s on module %s is not input.\n", log_id(portname), log_id(top->module)); + fstHandle id = fst->getHandle(scope + "." + RTLIL::unescape_id(portname)); + if (id==0) + log_error("Can't find port %s.%s in FST.\n", scope.c_str(), log_id(portname)); + fst_clock.push_back(id); + } + if (fst_clock.size()==0) + log_error("No clock signals defined for input file\n"); + + SigMap sigmap(topmod); + log ("Get inputs\n"); + std::map inputs; + + for (auto wire : topmod->wires()) { + if (wire->port_input) { + fstHandle id = fst->getHandle(scope + "." + RTLIL::unescape_id(wire->name)); + log("Input %s\n",log_id(wire)); + inputs[wire] = id; + } + } + + fst->reconstruct(fst_clock); + auto edges = fst->edges(fst_clock.back(), true, true); + fst->reconstructAllAtTimes(edges); + for(auto &time : edges) { + for(auto &item : inputs) { + std::string v = fst->valueAt(item.second, time); + top->set_state(item.first, Const::from_string(v)); + } + update(); + } }; struct SimPass : public Pass { @@ -889,6 +952,12 @@ struct SimPass : public Pass { log(" -w\n"); log(" writeback mode: use final simulation state as new init state\n"); log("\n"); + log(" -r\n"); + log(" read simulation results file (file formats supported: FST)\n"); + log("\n"); + log(" -scope\n"); + log(" scope of simulation top model\n"); + log("\n"); log(" -d\n"); log(" enable debug output\n"); log("\n"); @@ -958,6 +1027,16 @@ struct SimPass : public Pass { worker.zinit = true; continue; } + if (args[argidx] == "-r" && argidx+1 < args.size()) { + std::string sim_filename = args[++argidx]; + rewrite_filename(sim_filename); + worker.sim_filename = sim_filename; + continue; + } + if (args[argidx] == "-scope" && argidx+1 < args.size()) { + worker.scope = args[++argidx]; + continue; + } break; } extra_args(args, argidx, design); @@ -976,7 +1055,10 @@ struct SimPass : public Pass { top_mod = mods.front(); } - worker.run(top_mod, numcycles); + if (worker.sim_filename.empty()) + worker.run(top_mod, numcycles); + else + worker.run_cosim(top_mod, numcycles); } } SimPass; -- 2.30.2