diff options
Diffstat (limited to 'src/sim/dvfs_handler.cc')
| -rw-r--r-- | src/sim/dvfs_handler.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/sim/dvfs_handler.cc b/src/sim/dvfs_handler.cc index 254720c5f..5ccd50bcd 100644 --- a/src/sim/dvfs_handler.cc +++ b/src/sim/dvfs_handler.cc @@ -45,9 +45,11 @@ #include <utility> #include "base/misc.hh" +#include "base/trace.hh" #include "debug/DVFS.hh" #include "params/DVFSHandler.hh" #include "sim/clock_domain.hh" +#include "sim/eventq_impl.hh" #include "sim/stat_control.hh" #include "sim/voltage_domain.hh" @@ -170,6 +172,30 @@ DVFSHandler::UpdateEvent::updatePerfLevel() d->perfLevel(perfLevelToSet); } +double +DVFSHandler::voltageAtPerfLevel(DomainID domain_id, PerfLevel perf_level) const +{ + VoltageDomain *d = findDomain(domain_id)->voltageDomain(); + assert(d); + PerfLevel n = d->numVoltages(); + if (perf_level < n) + return d->voltage(perf_level); + + // Request outside of the range of the voltage domain + if (n == 1) { + DPRINTF(DVFS, "DVFS: Request for perf-level %i for single-point "\ + "voltage domain %s. Returning voltage at level 0: %.2f "\ + "V\n", perf_level, d->name(), d->voltage(0)); + // Special case for single point voltage domain -> same voltage for + // all points + return d->voltage(0); + } + + warn("DVFSHandler %s reads illegal voltage level %u from "\ + "VoltageDomain %s. Returning 0 V\n", name(), perf_level, d->name()); + return 0.; +} + void DVFSHandler::serialize(CheckpointOut &cp) const { |