tests: Add tests for DRAM low power modes

This patch adds two regression tests that execute the script in the
configs dir for triggering low power mode transitions. A separate
test is required for each page policy because for close-adaptive
page policy the DRAM goes into the Precharge Power-down mode while
for open-adaptive page policy it goes into the Activate Power-down
mode.

Change-Id: Iad61af23f132db046f2857cc3ef64b2bf42cf5e4
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/5726
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

stats: update references

mem: tester for new HMC configuration

This patch provides the example test script to configure different HMC
architecture and run traffic through traffic generator.

Committed by Jason Lowe-Power <jason@lowepower.com>

mem: Resolve TrafficGen trace relative to the config

The traffic generator currently resolves relative trace paths relative
to gem5's current working directory. This can lead to surprising
results for relative paths where the expectation would normally be
that they are resolved relative to the configuration file. This
changeset implements config-relative trace file lookups. The old
behavior is kept as a fallback for configs that expect that behavior.

Change-Id: I1bda4e16725842666ffc37dcb6838c23a6ff138c
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>

stats: Add power stats to test references

Change-Id: Ic827213134b199446822f128b81d4a480e777fee

stats: update for snoop filter tweak

stats: update stats for thermals, indirect BP

cpu: TraceGen fix for tick frequency check

Bug fix for check on protobuf file frequency being different than
global frequency.

The ASCII encoder script is also fixed, and the example trace used in
the regressions is updated.

stats: update stats to after GPU checkin

stats: bump stats to reflect ruby tester changes

stats: updates due to recent chagnesets

stats: Update stats to match cache changes

stats: updates due to recent changes.

stats: Update stats for tgen to reflect CommMonitor changes

The name of the stack distance stats changed slightly when the stack
distance calculator was redesigned as a probe. Update the reference
stats to reflect this.

stats: Update stats for cache, crossbar and DRAM changes

This update includes the changes to whole-line writes, the refinement
of Read to ReadClean and ReadShared, the introduction of CleanEvict
for snoop-filter tracking, and updates to the DRAM command scheduler
for bank-group-aware scheduling.

Needless to say, almost every regression is affected.

stats: changes to due to recent set of patches

stats: Update stats to reflect cache and interconnect changes

This is a bulk update of stats to match the changes to cache timing,
interconnect timing, and a few minor changes to the o3 CPU.

stats: Bump stats for decoder, TLB, prefetcher and DRAM changes

Changes due to speculative execution of an unaligned PC, introduction
of TLB stats, changes and re-work of the prefetcher, and the
introduction of rank-wise refresh in the DRAM controller.

tests: Add a regression for the stack distance calculator

Re-use the existing traffic generator regression, and enable the stack
distance calculation in the comm monitor, along with the verification
stack.

The traffic generator config is also tuned to not increase the
run-time too much (and actually have some address re-use).

stats: updates due to changes to x86, stale configs.

stats: Add DRAM power statistics to reference output

stats: Bump stats for filter, crossbar and config changes

This patch bumps the stats to reflect the addition of the snoop filter
and snoop stats, the change from bus to crossbar, and the updates to
the ARM regressions that are now using a different CPU and cache
configuration. Lastly, some minor changes are expected due to the
activation cleanup of the CPUs.

stats: Update stats for CPU and cache changes

This patch updates the stats to reflect the fixes and changes to the
CPU (mainly the o3), and the caches.

stats: updates due to recent ruby and x86 changes
Also updates many out of date config files.

stats: Bump stats for the fixes, and mostly DRAM controller changes

tests: Reflect name change in DRAM tests

This patch reflects the recent name change in the DRAM TrafficGen
tests and also tidies up the test directory.

stats: Update stats for DRAM changes

This patch updates the stats to reflect the changes to the DRAM
controller.

stats: update stats for cache occupancy and clock domain changes