# Copyright (c) 2021 The Regents of the University of California
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from ....utils.override import *

from m5.objects import Cache, BasePrefetcher, StridePrefetcher

from typing import Optional


class MMUCache(Cache):
    """
    A simple Memory Management Unit (MMU) cache with default values.
    """

    def __init__(
        self,
        size: str,
        assoc: Optional[int] = 4,
        tag_latency: Optional[int] = 1,
        data_latency: Optional[int] = 1,
        response_latency: Optional[int] = 1,
        mshrs: Optional[int] = 20,
        tgts_per_mshr: Optional[int] = 12,
        writeback_clean: Optional[bool] = True,
        prefetcher: BasePrefetcher = StridePrefetcher(),
    ):
        super(MMUCache, self).__init__()
        self.size = size
        self.assoc = assoc
        self.tag_latency = tag_latency
        self.data_latency = data_latency
        self.response_latency = response_latency
        self.mshrs = mshrs
        self.tgts_per_mshr = tgts_per_mshr
        self.writeback_clean = writeback_clean
        self.prefetcher = prefetcher