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# Author: Matteo Andreozzi 37 38from m5.params import * 39from m5.objects.QoSMemCtrl import * 40 41class QoSMemSinkCtrl(QoSMemCtrl): 42 type = 'QoSMemSinkCtrl' 43 cxx_header = "mem/qos/mem_sink.hh" 44 cxx_class = "QoS::MemSinkCtrl" 45 port = SlavePort("Slave ports") 46 47 # the basic configuration of the controller architecture, note 48 # that each entry corresponds to a burst for the specific DRAM 49 # configuration (e.g. x32 with burst length 8 is 32 bytes) and not 50 # the cacheline size or request/packet size 51 write_buffer_size = Param.Unsigned(64, "Number of write queue entries") 52 read_buffer_size = Param.Unsigned(32, "Number of read queue entries") 53 54 # memory packet size 55 memory_packet_size = Param.MemorySize("32B", "Memory packet size") 56 57 # request latency - minimum timing between requests 58 request_latency = Param.Latency("20ns", "Memory latency between requests") 59 60 # response latency - time to issue a response once a request is serviced 61 response_latency = Param.Latency("20ns", "Memory response latency") 62 63 64