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# Copyright (c) 2011-2015 Advanced Micro Devices, Inc.
# All rights reserved.
#
# For use for simulation and test purposes only
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
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# software without specific prior written permission.
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# Authors: Lisa Hsu
from m5.defines import buildEnv
from m5.params import *
from m5.proxy import *
from m5.objects.MemObject import MemObject
if buildEnv['FULL_SYSTEM']:
class X86PagetableWalker(MemObject):
type = 'X86PagetableWalker'
cxx_class = 'X86ISA::Walker'
port = SlavePort("Port for the hardware table walker")
system = Param.System(Parent.any, "system object")
class X86GPUTLB(MemObject):
type = 'X86GPUTLB'
cxx_class = 'X86ISA::GpuTLB'
cxx_header = 'gpu-compute/gpu_tlb.hh'
size = Param.Int(64, "TLB size (number of entries)")
assoc = Param.Int(64, "TLB associativity")
if buildEnv['FULL_SYSTEM']:
walker = Param.X86PagetableWalker(X86PagetableWalker(),
"page table walker")
hitLatency = Param.Int(2, "Latency of a TLB hit")
missLatency1 = Param.Int(5, "Latency #1 of a TLB miss")
missLatency2 = Param.Int(100, "Latency #2 of a TLB miss")
maxOutstandingReqs = Param.Int(64, "# of maximum outstanding requests")
slave = VectorSlavePort("Port on side closer to CPU/CU")
master = VectorMasterPort("Port on side closer to memory")
allocationPolicy = Param.Bool(True, "Allocate on an access")
accessDistance = Param.Bool(False, "print accessDistance stats")
class TLBCoalescer(MemObject):
type = 'TLBCoalescer'
cxx_class = 'TLBCoalescer'
cxx_header = 'gpu-compute/tlb_coalescer.hh'
probesPerCycle = Param.Int(2, "Number of TLB probes per cycle")
coalescingWindow = Param.Int(1, "Permit coalescing across that many ticks")
slave = VectorSlavePort("Port on side closer to CPU/CU")
master = VectorMasterPort("Port on side closer to memory")
disableCoalescing = Param.Bool(False,"Dispable Coalescing")