tests: Migrated 80.dram scons-based tests to testlib framework

"configs/dram/low_power_sweep.py" has been modified to keep the
generated "lowp_sweep.cfg" file in "configs/dram". This generated file
is now ignored by git.

Change-Id: I700d04944fee58f8a506c71fd474b84024ec4374
Jira: https://gem5.atlassian.net/browse/GEM5-109
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/25923
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

.gitignore

@@ -29,3 +29,4 @@ m5out
 /system/arm/bootloader/arm64/boot_emm.arm64
 /system/arm/bootloader/arm64/boot_v2.arm64
 configs/example/memcheck.cfg
+configs/dram/lowp_sweep.cfg

configs/dram/low_power_sweep.py

@@ -127,8 +127,9 @@ system.mem_ctrls[0].page_policy = args.page_policy
 period = 250000000
 
 # We specify the states in a config file input to the traffic generator.
-cfg_file_name = "configs/dram/lowp_sweep.cfg"
+cfg_file_name = "lowp_sweep.cfg"
-cfg_file = open(cfg_file_name, 'w')
+cfg_file_path = os.path.dirname(__file__) + "/" +cfg_file_name
+cfg_file = open(cfg_file_path, 'w')
 
 # Get the number of banks
 nbr_banks = int(system.mem_ctrls[0].banks_per_rank.value)
@@ -214,7 +215,7 @@ cfg_file.write("TRANSITION %d %d 1\n" % (nxt_state, nxt_state))
 cfg_file.close()
 
 # create a traffic generator, and point it to the file we just created
-system.tgen = TrafficGen(config_file = cfg_file_name)
+system.tgen = TrafficGen(config_file = cfg_file_path)
 
 # add a communication monitor
 system.monitor = CommMonitor()

tests/gem5/dram-lowp/ref/simout

@@ -0,0 +1,14 @@
+gem5 Simulator System.  http://gem5.org
+gem5 is copyrighted software; use the --copyright option for details.
+
+
+Global frequency set at 1000000000000 ticks per second
+--- Done DRAM low power sweep ---
+Fixed params - 
+	burst: 64, banks: 16, max stride: 512, itt min: 3332.0 ns
+Swept params - 
+	itt max multiples input: [1, 20, 100]
+	itt max values [46993.0, 939860.0, 4699300.0]
+	bank utilization values [1, 8, 16]
+	stride values: [64, 256, 512]
+Traffic gen config file: lowp_sweep.cfg

tests/gem5/dram-lowp/test_dram_lowp.py

@@ -0,0 +1,51 @@
+# Copyright (c) 2020 The Regents of the University of California
+# All Rights Reserved.
+#
+# 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.
+
+from testlib import *
+
+verifiers = (
+    verifier.MatchStdoutNoPerf(joinpath(getcwd(), 'ref', 'simout')),
+)
+
+gem5_verify_config(
+    name='test-low_power-close_adaptive',
+    fixtures=(),
+    verifiers=verifiers,
+    config=joinpath(config.base_dir, 'configs', 'dram','low_power_sweep.py'),
+    config_args=['-p', 'close_adaptive', '-r', '2'],
+    valid_isas=('NULL',),
+    valid_hosts=constants.supported_hosts,
+)
+
+gem5_verify_config(
+    name='test-low_power-open_adaptive',
+    fixtures=(),
+    verifiers=verifiers,
+    config=joinpath(config.base_dir, 'configs', 'dram','low_power_sweep.py'),
+    config_args=['-p', 'open_adaptive', '-r', '2'],
+    valid_isas=('NULL',),
+    valid_hosts=constants.supported_hosts,
+)