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author | Lisa Hsu <Lisa.Hsu@amd.com> | 2011-03-31 17:17:57 -0700 |
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committer | Lisa Hsu <Lisa.Hsu@amd.com> | 2011-03-31 17:17:57 -0700 |
commit | 322b9ca2c5b0465db7086abdc6eadca061932575 (patch) | |
tree | b14837962707de7b90b95c0b0a7b09ffa1988847 /src/mem/ruby/system/WireBuffer.py | |
parent | 06fcaf9104cefe5a2c0062b9357dae46bfd9992a (diff) | |
download | gem5-322b9ca2c5b0465db7086abdc6eadca061932575.tar.xz |
Ruby: Add new object called WireBuffer to mimic a Wire.
This is a substitute for MessageBuffers between controllers where you don't
want messages to actually go through the Network, because requests/responses can
always get reordered wrt to one another (even if you turn off Randomization and turn on Ordered)
because you are, after all, going through a network with contention. For systems where you model
multiple controllers that are very tightly coupled and do not actually go through a network,
it is a pain to have to write a coherence protocol to account for mixed up request/response orderings
despite the fact that it's completely unrealistic. This is *not* meant as a substitute for real
MessageBuffers when messages do in fact go over a network.
Diffstat (limited to 'src/mem/ruby/system/WireBuffer.py')
-rw-r--r-- | src/mem/ruby/system/WireBuffer.py | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/mem/ruby/system/WireBuffer.py b/src/mem/ruby/system/WireBuffer.py new file mode 100644 index 000000000..0bcc291bb --- /dev/null +++ b/src/mem/ruby/system/WireBuffer.py @@ -0,0 +1,35 @@ +# Copyright (c) 2010 Advanced Micro Devices, Inc. +# 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. +# +# Author: Lisa Hsu + +from m5.params import * +from m5.SimObject import SimObject +#from Controller import RubyController + +class RubyWireBuffer(SimObject): + type = 'RubyWireBuffer' + cxx_class = 'WireBuffer' |