32df25e426
This change updates the HBMCtrl such that both pseudo channels can be in separate states (read or write) at the same time. In addition, the controller queues are now always split in two halves for both pseudo channels. Change-Id: Ifb599e611ad99f6c511baaf245bad2b5c9210a86 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65491 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
49 lines
2.2 KiB
Python
49 lines
2.2 KiB
Python
# Copyright (c) 2022 The Regents of the University of California
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# All Rights Reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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from m5.params import *
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from m5.proxy import *
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from m5.objects.MemCtrl import *
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# HBMCtrl manages two pseudo channels of HBM2
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class HBMCtrl(MemCtrl):
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type = "HBMCtrl"
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cxx_header = "mem/hbm_ctrl.hh"
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cxx_class = "gem5::memory::HBMCtrl"
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# HBMCtrl uses the SimpleMemCtlr's interface
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# `dram` as the first pseudo channel, the second
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# pseudo channel interface is following
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# HBMCtrl has been tested with two HBM_2000_4H_1x64 interfaces
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dram_2 = Param.DRAMInterface("DRAM memory interface")
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# For mixed traffic, HBMCtrl with HBM_2000_4H_1x64 interfaaces
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# gives the best results with following min_r/w_per_switch
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min_reads_per_switch = 64
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min_writes_per_switch = 64
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