# 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

# ----------------------
# 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_range=AddrRange(0, size='8GB')
    forward_snoops = False

#cpu
cpus = [ AtomicSimpleCPU(cpu_id=i) for i in xrange(2) ]
#the system
system = FSConfig.makeLinuxAlphaSystem('atomic')
system.bridge.filter_ranges_a=[AddrRange(0, Addr.max)]
system.bridge.filter_ranges_b=[AddrRange(0, size='8GB')]
system.iocache = IOCache()
system.iocache.cpu_side = system.iobus.port
system.iocache.mem_side = system.membus.port

system.cpu = cpus
#create the l1/l2 bus
system.toL2Bus = Bus()

#connect up the l2 cache
system.l2c = L2(size='4MB', assoc=8)
system.l2c.cpu_side = system.toL2Bus.port
system.l2c.mem_side = system.membus.port
system.l2c.num_cpus = 2

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

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