| /* |
| * Copyright (c) 2016-2017 ARM Limited |
| * All rights reserved |
| * |
| * The license below extends only to copyright in the software and shall |
| * not be construed as granting a license to any other intellectual |
| * property including but not limited to intellectual property relating |
| * to a hardware implementation of the functionality of the software |
| * licensed hereunder. You may use the software subject to the license |
| * terms below provided that you ensure that this notice is replicated |
| * unmodified and in its entirety in all distributions of the software, |
| * modified or unmodified, in source code or in binary form. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "sim/power/mathexpr_powermodel.hh" |
| |
| #include <string> |
| |
| #include "base/statistics.hh" |
| #include "params/MathExprPowerModel.hh" |
| #include "sim/mathexpr.hh" |
| #include "sim/power/thermal_model.hh" |
| #include "sim/sim_object.hh" |
| |
| MathExprPowerModel::MathExprPowerModel(const Params *p) |
| : PowerModelState(p), dyn_expr(p->dyn), st_expr(p->st), failed(false) |
| { |
| // Calculate the name of the object we belong to |
| std::vector<std::string> path; |
| tokenize(path, name(), '.', true); |
| // It's something like xyz.power_model.pm2 |
| assert(path.size() > 2); |
| for (unsigned i = 0; i < path.size() - 2; i++) |
| basename += path[i] + "."; |
| } |
| |
| void |
| MathExprPowerModel::startup() |
| { |
| // Create a map with stats and pointers for quick access |
| // Has to be done here, since we need access to the statsList |
| for (auto & i: Stats::statsList()) { |
| if (i->name.find(basename) == 0) { |
| // Add stats for this sim object and its child objects |
| stats_map[i->name.substr(basename.size())] = i; |
| } else if (i->name.find(".") == std::string::npos) { |
| // Add global stats (sim_seconds, for example) |
| stats_map[i->name] = i; |
| } |
| } |
| |
| tryEval(st_expr); |
| const bool st_failed = failed; |
| |
| tryEval(dyn_expr); |
| const bool dyn_failed = failed; |
| |
| if (st_failed || dyn_failed) { |
| const auto *p = dynamic_cast<const Params *>(params()); |
| assert(p); |
| |
| fatal("Failed to evaluate power expressions:\n%s%s%s\n", |
| st_failed ? p->st : "", |
| st_failed && dyn_failed ? "\n" : "", |
| dyn_failed ? p->dyn : ""); |
| } |
| } |
| |
| double |
| MathExprPowerModel::eval(const MathExpr &expr) const |
| { |
| const double value = tryEval(expr); |
| |
| // This shouldn't happen unless something went wrong the equations |
| // were verified in startup(). |
| panic_if(failed, "Failed to evaluate power expression '%s'\n", |
| expr.toStr()); |
| |
| return value; |
| } |
| |
| double |
| MathExprPowerModel::tryEval(const MathExpr &expr) const |
| { |
| failed = false; |
| const double value = expr.eval( |
| std::bind(&MathExprPowerModel::getStatValue, |
| this, std::placeholders::_1) |
| ); |
| |
| return value; |
| } |
| |
| |
| double |
| MathExprPowerModel::getStatValue(const std::string &name) const |
| { |
| using namespace Stats; |
| |
| // Automatic variables: |
| if (name == "temp") { |
| return _temp; |
| } else if (name == "voltage") { |
| return clocked_object->voltage(); |
| } else if (name=="clock_period") { |
| return clocked_object->clockPeriod(); |
| } |
| |
| // Try to cast the stat, only these are supported right now |
| const auto it = stats_map.find(name); |
| if (it == stats_map.cend()) { |
| warn("Failed to find stat '%s'\n", name); |
| failed = true; |
| return 0; |
| } |
| |
| const Info *info = it->second; |
| |
| auto si = dynamic_cast<const ScalarInfo *>(info); |
| if (si) |
| return si->value(); |
| auto fi = dynamic_cast<const FormulaInfo *>(info); |
| if (fi) |
| return fi->total(); |
| |
| panic("Unknown stat type!\n"); |
| } |
| |
| void |
| MathExprPowerModel::regStats() |
| { |
| PowerModelState::regStats(); |
| } |
| |
| MathExprPowerModel* |
| MathExprPowerModelParams::create() |
| { |
| return new MathExprPowerModel(this); |
| } |