64a3e28852
There are cases in which we need to prevent randomization for a specific buffer when enabled at the RubySystem level (e.g. a internal trigger queue that requires zero latency enqueue, while other buffers can be randomized). This changes the randomization parameter to support enabling and disabling randomization regardless of the RubySystem setting. Change-Id: If7520153cc5864897fa42e8911a6f8acbcf01db5 Signed-off-by: Tiago Mück <tiago.muck@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/31419 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
69 lines
3.7 KiB
Python
69 lines
3.7 KiB
Python
# Copyright (c) 2020 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.
|
|
#
|
|
# Copyright (c) 2015 Mark D. Hill and David A. Wood.
|
|
# 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 m5.params import *
|
|
from m5.proxy import *
|
|
from m5.SimObject import SimObject
|
|
|
|
# A MessageBuffer inserts random delays to enqueued messages when the
|
|
# randomization param is set to 'enabled' or when globally enabled for the
|
|
# RubySystem and the param is set to 'ruby_system' (default). 'disabled'
|
|
# completely prevents randomization.
|
|
class MessageRandomization(ScopedEnum):
|
|
vals = ['disabled', 'enabled', 'ruby_system']
|
|
|
|
class MessageBuffer(SimObject):
|
|
type = 'MessageBuffer'
|
|
cxx_class = 'MessageBuffer'
|
|
cxx_header = "mem/ruby/network/MessageBuffer.hh"
|
|
ordered = Param.Bool(False, "Whether the buffer is ordered")
|
|
buffer_size = Param.Unsigned(0, "Maximum number of entries to buffer \
|
|
(0 allows infinite entries)")
|
|
randomization = Param.MessageRandomization('ruby_system',
|
|
"Randomization parameter")
|
|
allow_zero_latency = Param.Bool(False, "Allows messages to be enqueued \
|
|
with zero latency. This is useful \
|
|
for internall trigger queues and \
|
|
should not be used if this msg. \
|
|
buffer connects different objects")
|
|
|
|
out_port = RequestPort("Request port to MessageBuffer receiver")
|
|
master = DeprecatedParam(out_port, '`master` is now called `out_port`')
|
|
in_port = ResponsePort("Response port from MessageBuffer sender")
|
|
slave = DeprecatedParam(in_port, '`slave` is now called `in_port`')
|