QoSPolicy.py revision 12968:1c2b8dd9241f
1# Copyright (c) 2018 ARM Limited 2# All rights reserved. 3# 4# The license below extends only to copyright in the software and shall 5# not be construed as granting a license to any other intellectual 6# property including but not limited to intellectual property relating 7# to a hardware implementation of the functionality of the software 8# licensed hereunder. You may use the software subject to the license 9# terms below provided that you ensure that this notice is replicated 10# unmodified and in its entirety in all distributions of the software, 11# modified or unmodified, in source code or in binary form. 12# 13# Redistribution and use in source and binary forms, with or without 14# modification, are permitted provided that the following conditions are 15# met: redistributions of source code must retain the above copyright 16# notice, this list of conditions and the following disclaimer; 17# redistributions in binary form must reproduce the above copyright 18# notice, this list of conditions and the following disclaimer in the 19# documentation and/or other materials provided with the distribution; 20# neither the name of the copyright holders nor the names of its 21# contributors may be used to endorse or promote products derived from 22# this software without specific prior written permission. 23# 24# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 27# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 28# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 29# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 30# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 34# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35# 36# Authors: Giacomo Travaglini 37 38from m5.SimObject import * 39from m5.params import * 40 41# QoS scheduler policy used to serve incoming transaction 42class QoSPolicy(SimObject): 43 type = 'QoSPolicy' 44 abstract = True 45 cxx_header = "mem/qos/policy.hh" 46 cxx_class = 'QoS::Policy' 47 48class QoSFixedPriorityPolicy(QoSPolicy): 49 type = 'QoSFixedPriorityPolicy' 50 cxx_header = "mem/qos/policy_fixed_prio.hh" 51 cxx_class = 'QoS::FixedPriorityPolicy' 52 53 cxx_exports = [ 54 PyBindMethod('initMasterName'), 55 PyBindMethod('initMasterObj'), 56 ] 57 58 _mpriorities = None 59 60 def setMasterPriority(self, master, priority): 61 if not self._mpriorities: 62 self._mpriorities = [] 63 64 self._mpriorities.append([master, priority]) 65 66 def init(self): 67 if not self._mpriorities: 68 print("Error, use setMasterPriority to init masters/priorities\n"); 69 exit(1) 70 else: 71 for mprio in self._mpriorities: 72 master = mprio[0] 73 priority = mprio[1] 74 if isinstance(master, basestring): 75 self.getCCObject().initMasterName( 76 master, int(priority)) 77 else: 78 self.getCCObject().initMasterObj( 79 master.getCCObject(), priority) 80 81 # default fixed priority value for non-listed Masters 82 qos_fixed_prio_default_prio = Param.UInt8(0, 83 "Default priority for non-listed Masters") 84