SerialLink.py revision 11185
111185Serfan.azarkhish@unibo.it# Copyright (c) 2012-2013 ARM Limited 211185Serfan.azarkhish@unibo.it# All rights reserved. 311185Serfan.azarkhish@unibo.it# 411185Serfan.azarkhish@unibo.it# The license below extends only to copyright in the software and shall 511185Serfan.azarkhish@unibo.it# not be construed as granting a license to any other intellectual 611185Serfan.azarkhish@unibo.it# property including but not limited to intellectual property relating 711185Serfan.azarkhish@unibo.it# to a hardware implementation of the functionality of the software 811185Serfan.azarkhish@unibo.it# licensed hereunder. You may use the software subject to the license 911185Serfan.azarkhish@unibo.it# terms below provided that you ensure that this notice is replicated 1011185Serfan.azarkhish@unibo.it# unmodified and in its entirety in all distributions of the software, 1111185Serfan.azarkhish@unibo.it# modified or unmodified, in source code or in binary form. 1211185Serfan.azarkhish@unibo.it# 1311185Serfan.azarkhish@unibo.it# Copyright (c) 2006-2007 The Regents of The University of Michigan 1411185Serfan.azarkhish@unibo.it# Copyright (c) 2015 The University of Bologna 1511185Serfan.azarkhish@unibo.it# All rights reserved. 1611185Serfan.azarkhish@unibo.it# 1711185Serfan.azarkhish@unibo.it# Redistribution and use in source and binary forms, with or without 1811185Serfan.azarkhish@unibo.it# modification, are permitted provided that the following conditions are 1911185Serfan.azarkhish@unibo.it# met: redistributions of source code must retain the above copyright 2011185Serfan.azarkhish@unibo.it# notice, this list of conditions and the following disclaimer; 2111185Serfan.azarkhish@unibo.it# redistributions in binary form must reproduce the above copyright 2211185Serfan.azarkhish@unibo.it# notice, this list of conditions and the following disclaimer in the 2311185Serfan.azarkhish@unibo.it# documentation and/or other materials provided with the distribution; 2411185Serfan.azarkhish@unibo.it# neither the name of the copyright holders nor the names of its 2511185Serfan.azarkhish@unibo.it# contributors may be used to endorse or promote products derived from 2611185Serfan.azarkhish@unibo.it# this software without specific prior written permission. 2711185Serfan.azarkhish@unibo.it# 2811185Serfan.azarkhish@unibo.it# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2911185Serfan.azarkhish@unibo.it# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 3011185Serfan.azarkhish@unibo.it# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 3111185Serfan.azarkhish@unibo.it# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 3211185Serfan.azarkhish@unibo.it# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3311185Serfan.azarkhish@unibo.it# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3411185Serfan.azarkhish@unibo.it# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3511185Serfan.azarkhish@unibo.it# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3611185Serfan.azarkhish@unibo.it# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3711185Serfan.azarkhish@unibo.it# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3811185Serfan.azarkhish@unibo.it# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3911185Serfan.azarkhish@unibo.it# 4011185Serfan.azarkhish@unibo.it# Authors: Ali Saidi 4111185Serfan.azarkhish@unibo.it# Andreas Hansson 4211185Serfan.azarkhish@unibo.it# Erfan Azarkhish 4311185Serfan.azarkhish@unibo.it 4411185Serfan.azarkhish@unibo.itfrom m5.params import * 4511185Serfan.azarkhish@unibo.itfrom MemObject import MemObject 4611185Serfan.azarkhish@unibo.it 4711185Serfan.azarkhish@unibo.it# SerialLink is a simple variation of the Bridge class, with the ability to 4811185Serfan.azarkhish@unibo.it# account for the latency of packet serialization. 4911185Serfan.azarkhish@unibo.it 5011185Serfan.azarkhish@unibo.itclass SerialLink(MemObject): 5111185Serfan.azarkhish@unibo.it type = 'SerialLink' 5211185Serfan.azarkhish@unibo.it cxx_header = "mem/serial_link.hh" 5311185Serfan.azarkhish@unibo.it slave = SlavePort('Slave port') 5411185Serfan.azarkhish@unibo.it master = MasterPort('Master port') 5511185Serfan.azarkhish@unibo.it req_size = Param.Unsigned(16, "The number of requests to buffer") 5611185Serfan.azarkhish@unibo.it resp_size = Param.Unsigned(16, "The number of responses to buffer") 5711185Serfan.azarkhish@unibo.it delay = Param.Latency('0ns', "The latency of this serial_link") 5811185Serfan.azarkhish@unibo.it ranges = VectorParam.AddrRange([AllMemory], 5911185Serfan.azarkhish@unibo.it "Address ranges to pass through the serial_link") 6011185Serfan.azarkhish@unibo.it # Bandwidth of the serial link is determined by the clock domain which the 6111185Serfan.azarkhish@unibo.it # link belongs to and the number of lanes: 6211185Serfan.azarkhish@unibo.it num_lanes = Param.Unsigned(1, "Number of parallel lanes inside the serial" 6311185Serfan.azarkhish@unibo.it "link. (aka. lane width)") 64