# 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')
from Benchmarks import SysConfig
import FSConfig

mem_size = '128MB'

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

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

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

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

# ---------------------
# Page table walker cache
# ---------------------
class PageTableWalkerCache(BaseCache):
    assoc = 2
    block_size = 64
    hit_latency = '1ns'
    response_latency = '1ns'
    mshrs = 10
    size = '1kB'
    tgts_per_mshr = 12
    is_top_level = True

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

#cpu
cpu = AtomicSimpleCPU(cpu_id=0)
#the system
mdesc = SysConfig(disk = 'linux-x86.img')
system = FSConfig.makeLinuxX86System('atomic', mdesc=mdesc)
system.kernel = FSConfig.binary('x86_64-vmlinux-2.6.22.9')
system.iocache = IOCache()
system.iocache.cpu_side = system.iobus.master
system.iocache.mem_side = system.membus.slave

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

#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),
                            PageTableWalkerCache(),
                            PageTableWalkerCache())
# create the interrupt controller
cpu.createInterruptController()
# 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')