diff options
Diffstat (limited to 'src/sim/dvfs_handler.hh')
| -rw-r--r-- | src/sim/dvfs_handler.hh | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/src/sim/dvfs_handler.hh b/src/sim/dvfs_handler.hh index 3ff08115a..a8b78d08b 100644 --- a/src/sim/dvfs_handler.hh +++ b/src/sim/dvfs_handler.hh @@ -137,7 +137,15 @@ class DVFSHandler : public SimObject */ Tick clkPeriodAtPerfLevel(DomainID domain_id, PerfLevel perf_level) const { - return findDomain(domain_id)->clkPeriodAtPerfLevel(perf_level); + SrcClockDomain *d = findDomain(domain_id); + assert(d); + PerfLevel n = d->numPerfLevels(); + if (perf_level < n) + return d->clkPeriodAtPerfLevel(perf_level); + + warn("DVFSHandler %s reads illegal frequency level %u from "\ + "SrcClockDomain %s. Returning 0\n", name(), perf_level, d->name()); + return Tick(0); } /** @@ -150,7 +158,25 @@ class DVFSHandler : public SimObject */ double voltageAtPerfLevel(DomainID domain_id, PerfLevel perf_level) const { - return findDomain(domain_id)->voltageDomain()->voltage(perf_level); + 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.; } /** |