| # Copyright (c) 2021 The Regents of the University of California |
| # All Rights Reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer; |
| # redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution; |
| # neither the name of the copyright holders nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| from typing import List |
| |
| from m5.objects import ( |
| AddrRange, |
| Memory_Controller, |
| MessageBuffer, |
| Port, |
| RubyNetwork, |
| ) |
| |
| from .abstract_node import TriggerMessageBuffer |
| |
| class MemoryController(Memory_Controller): |
| """A controller that connects to memory |
| """ |
| _version = 0 |
| |
| @classmethod |
| def versionCount(cls): |
| cls._version += 1 # Use count for this particular type |
| return cls._version - 1 |
| |
| def __init__( |
| self, |
| network: RubyNetwork, |
| ranges: List[AddrRange], |
| port: Port |
| ): |
| super().__init__() |
| |
| self.version = self.versionCount() |
| |
| self.addr_ranges = ranges |
| self.memory_out_port = port |
| self.data_channel_size = 32 |
| |
| self.connectQueues(network) |
| |
| def connectQueues(self, network): |
| self.triggerQueue = TriggerMessageBuffer() |
| self.responseFromMemory = MessageBuffer() |
| self.requestToMemory = MessageBuffer(ordered = True) |
| self.reqRdy = TriggerMessageBuffer() |
| |
| self.reqOut = MessageBuffer() |
| self.rspOut = MessageBuffer() |
| self.snpOut = MessageBuffer() |
| self.datOut = MessageBuffer() |
| self.reqIn = MessageBuffer() |
| self.rspIn = MessageBuffer() |
| self.snpIn = MessageBuffer() |
| self.datIn = MessageBuffer() |
| self.reqOut.out_port = network.in_port |
| self.rspOut.out_port = network.in_port |
| self.snpOut.out_port = network.in_port |
| self.datOut.out_port = network.in_port |
| self.reqIn.in_port = network.out_port |
| self.rspIn.in_port = network.out_port |
| self.snpIn.in_port = network.out_port |
| self.datIn.in_port = network.out_port |
