1 files changed, 97 insertions, 0 deletions
diff --git a/src/mem/CommMonitor.py b/src/mem/CommMonitor.py
new file mode 100644
index 000000000..3621942d9
--- /dev/null
+++ b/src/mem/CommMonitor.py
@@ -0,0 +1,97 @@
+# Copyright (c) 2012 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.
+#
+# Authors: Thomas Grass
+#          Andreas Hansson
+
+from m5.params import *
+from MemObject import MemObject
+
+# The communication monitor will most typically be used in combination
+# with periodic dumping and resetting of stats using schedStatEvent
+class CommMonitor(MemObject):
+    type = 'CommMonitor'
+
+    # one port in each direction
+    master = MasterPort("Master port")
+    slave = SlavePort("Slave port")
+
+    # control the sample period window length of this monitor
+    sample_period = Param.Clock("1ms", "Sample period for histograms")
+
+    # for each histogram, set the number of bins and enable the user
+    # to disable the measurement, reads and writes use the same
+    # parameters
+
+    # histogram of burst length of packets (not using sample period)
+    burst_length_bins = Param.Unsigned('20', "# bins in burst length " \
+                                           "histograms")
+    disable_burst_length_hists = Param.Bool(False, "Disable burst length " \
+                                                "histograms")
+
+    # bandwidth per sample period
+    bandwidth_bins = Param.Unsigned('20', "# bins in bandwidth histograms")
+    disable_bandwidth_hists = Param.Bool(False, "Disable bandwidth histograms")
+
+    # latency from request to response (not using sample period)
+    latency_bins = Param.Unsigned('20', "# bins in latency histograms")
+    disable_latency_hists = Param.Bool(False, "Disable latency histograms")
+
+    # inter transaction time (ITT) distributions in uniformly sized
+    # bins up to the maximum, independently for read-to-read,
+    # write-to-write and the combined request-to-request that does not
+    # separate read and write requests
+    itt_bins = Param.Unsigned('20', "# bins in ITT distributions")
+    itt_max_bin = Param.Latency('100ns', "Max bin of ITT distributions")
+    disable_itt_dists = Param.Bool(False, "Disable ITT distributions")
+
+    # outstanding requests (that did not yet get a response) per
+    # sample period
+    outstanding_bins = Param.Unsigned('20', "# bins in outstanding " \
+                                          "requests histograms")
+    disable_outstanding_hists = Param.Bool(False, "Disable outstanding " \
+                                               "requests histograms")
+
+    # transactions (requests) observed per sample period
+    transaction_bins = Param.Unsigned('20', "# bins in transaction " \
+                                          "count histograms")
+    disable_transaction_hists = Param.Bool(False, "Disable transaction count " \
+                                               "histograms")
+
+    # address distributions (heatmaps) with associated address masks
+    # to selectively only look at certain bits of the address
+    read_addr_mask = Param.Addr(MaxAddr, "Address mask for read address")
+    write_addr_mask = Param.Addr(MaxAddr, "Address mask for write address")
+    disable_addr_dists = Param.Bool(True, "Disable address distributions")