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# Copyright (c) 2018 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: Giacomo Travaglini
from six import string_types
from m5.SimObject import *
from m5.params import *
# QoS scheduler policy used to serve incoming transaction
class QoSPolicy(SimObject):
type = 'QoSPolicy'
abstract = True
cxx_header = "mem/qos/policy.hh"
cxx_class = 'QoS::Policy'
class QoSFixedPriorityPolicy(QoSPolicy):
type = 'QoSFixedPriorityPolicy'
cxx_header = "mem/qos/policy_fixed_prio.hh"
cxx_class = 'QoS::FixedPriorityPolicy'
cxx_exports = [
PyBindMethod('initMasterName'),
PyBindMethod('initMasterObj'),
]
_mpriorities = None
def setMasterPriority(self, master, priority):
if not self._mpriorities:
self._mpriorities = []
self._mpriorities.append([master, priority])
def init(self):
if not self._mpriorities:
print("Error, use setMasterPriority to init masters/priorities\n");
exit(1)
else:
for mprio in self._mpriorities:
master = mprio[0]
priority = mprio[1]
if isinstance(master, string_types):
self.getCCObject().initMasterName(
master, int(priority))
else:
self.getCCObject().initMasterObj(
master.getCCObject(), priority)
# default fixed priority value for non-listed Masters
qos_fixed_prio_default_prio = Param.UInt8(0,
"Default priority for non-listed Masters")
class QoSPropFairPolicy(QoSPolicy):
type = 'QoSPropFairPolicy'
cxx_header = "mem/qos/policy_pf.hh"
cxx_class = 'QoS::PropFairPolicy'
cxx_exports = [
PyBindMethod('initMasterName'),
PyBindMethod('initMasterObj'),
]
_mscores = None
def setInitialScore(self, master, score):
if not self._mscores:
self._mscores = []
self._mscores.append([master, score])
def init(self):
if not self._mscores:
print("Error, use setInitialScore to init masters/scores\n");
exit(1)
else:
for mprio in self._mscores:
master = mprio[0]
score = mprio[1]
if isinstance(master, string_types):
self.getCCObject().initMasterName(
master, float(score))
else:
self.getCCObject().initMasterObj(
master.getCCObject(), float(score))
weight = Param.Float(0.5, "Pf score weight")
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