# Copyright (c) 2006-2007 The Regents of The University of Michigan
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# Authors: Steve Reinhardt

import m5
from m5.objects import *
m5.util.addToPath('../configs/common')
import FSConfig


# --------------------
# Base L1 Cache
# ====================

class L1(BaseCache):
    latency = '1ns'
    block_size = 64
    mshrs = 4
    tgts_per_mshr = 8
    is_top_level = True

# ----------------------
# Base L2 Cache
# ----------------------

class L2(BaseCache):
    block_size = 64
    latency = '10ns'
    mshrs = 92
    tgts_per_mshr = 16
    write_buffers = 8

# ---------------------
# I/O Cache
# ---------------------
class IOCache(BaseCache):
    assoc = 8
    block_size = 64
    latency = '50ns'
    mshrs = 20
    size = '1kB'
    tgts_per_mshr = 12
    addr_ranges = [AddrRange(0, size='8GB')]
    forward_snoops = False
    is_top_level = True

#cpu
cpu = InOrderCPU(cpu_id=0)
cpu.stageWidth = 4
cpu.fetchBuffSize = 1

#the system
system = FSConfig.makeLinuxAlphaSystem('timing')

system.cpu = cpu
#create the l1/l2 bus
system.toL2Bus = CoherentBus()
system.iocache = IOCache()
system.iocache.cpu_side = system.iobus.master
system.iocache.mem_side = system.membus.slave


#connect up the l2 cache
system.l2c = L2(size='4MB', assoc=8)
system.l2c.cpu_side = system.toL2Bus.master
system.l2c.mem_side = system.membus.slave

#connect up the cpu and l1s
cpu.addPrivateSplitL1Caches(L1(size = '32kB', assoc = 1),
                            L1(size = '32kB', assoc = 4))
# connect cpu level-1 caches to shared level-2 cache
cpu.connectAllPorts(system.toL2Bus, system.membus)
cpu.clock = '2GHz'

root = Root(full_system=True, system=system)
m5.ticks.setGlobalFrequency('1THz')