misc: Coupling gem5 with SystemC TLM2.0

Transaction Level Modeling (TLM2.0) is widely used in industry for creating
virtual platforms (IEEE 1666 SystemC). This patch contains a standard compliant
implementation of an external gem5 port, that enables the usage of gem5 as a
TLM initiator component in SystemC based virtual platforms. Both TLM coding
paradigms loosely timed (b_transport) and aproximately timed (nb_transport) are
supported.

Compared to the original patch a TLM memory manager was added. Furthermore, the
transaction object was removed and for each TLM payload a PacketPointer that
points to the original gem5 packet is added as an TLM extension.  For event
handling single events are now created.

Committed by: Nilay Vaish <nilay@cs.wisc.edu>

1 files changed, 57 insertions, 0 deletions

diff --git a/util/tlm/tgen.cfg b/util/tlm/tgen.cfg
new file mode 100644
index 000000000..e341d8574
--- /dev/null
+++ b/util/tlm/tgen.cfg
@@ -0,0 +1,57 @@
+# Copyright (c) 2015, University of Kaiserslautern
+# All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+# 
+# 2. 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.
+# 
+# 3. Neither the name of the copyright holder 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 HOLDER
+# 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: Matthias Jung
+
+
+# This format supports comments using the '#' symbol as the leading
+# character of the line
+#
+# The file format contains [STATE]+ [INIT] [TRANSITION]+ in any order,
+# where the states are the nodes in the graph, init describes what
+# state to start in, and transition describes the edges of the graph.
+#
+# STATE <id> <duration (ticks)> <type>
+#
+# State IDLE idles
+#
+# States LINEAR and RANDOM have additional <percent reads> <start addr>
+# <end addr> <access size (bytes)> <min period (ticks)> <max period (ticks)>
+# <data limit (bytes)>
+#
+# State TRACE plays back a pre-recorded trace once
+#
+# Addresses are expressed as decimal numbers. The period in the linear
+# and random state is from a uniform random distribution over the
+# interval. If a specific value is desired, then the min and max can
+# be set to the same value.
+STATE 0 1000000 LINEAR 50 0 256 4 5000 5000 64
+INIT 0
+TRANSITION 0 0 1