d02cba93c3
Add a `__len__` method to `CpuCluster` to allow clients to query the number of CPUs. Change-Id: I6fe680423ed6fc301faaf75b8685b080a4774fef Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/69678 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com>
97 lines
3.7 KiB
Python
97 lines
3.7 KiB
Python
# Copyright (c) 2022-2023 Arm Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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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.objects.SubSystem import SubSystem
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class CpuCluster(SubSystem):
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type = "CpuCluster"
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cxx_header = "cpu/cluster.hh"
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cxx_class = "gem5::CpuCluster"
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_NUM_CPUS = 0
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_NUM_CLUSTERS = 0
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voltage_domain = Param.VoltageDomain("Voltage domain")
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clk_domain = Param.ClockDomain("Clock domain")
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def __iter__(self):
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return iter(self.cpus)
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def __len__(self):
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return len(self.cpus)
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def generate_cpus(self, cpu_type: "BaseCPU", num_cpus: int):
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"""
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Instantiates the cpus within the cluster provided
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theit type and their number.
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:param cpu_type: The cpu class
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:param num_cpus: The number of cpus within the cluster
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"""
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self.cpus = [
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cpu_type(
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cpu_id=CpuCluster._NUM_CPUS + idx, clk_domain=self.clk_domain
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)
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for idx in range(num_cpus)
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]
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for cpu in self.cpus:
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cpu.createThreads()
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cpu.createInterruptController()
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cpu.socket_id = CpuCluster._NUM_CLUSTERS
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# "Register" the cluster/cpus by augmenting the
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# class variables
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CpuCluster._NUM_CPUS += num_cpus
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CpuCluster._NUM_CLUSTERS += 1
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def connect(self, membus: "SystemXBar"):
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"""
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Connects every cpu within the cluster with the
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provided bus
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:param membus: The system crossbar
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"""
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for cpu in self.cpus:
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cpu.connectBus(membus)
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def memory_mode(self) -> "MemoryMode":
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return type(self.cpus[0]).memory_mode()
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def require_caches(self) -> bool:
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return type(self.cpus[0]).require_caches()
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