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from m5.SimObject import SimObject
from m5.params import *
from m5.proxy import *
class BasePrefetcher(SimObject):
type = 'BasePrefetcher'
abstract = True
size = Param.Int(100,
"Number of entries in the hardware prefetch queue")
cross_pages = Param.Bool(False,
"Allow prefetches to cross virtual page boundaries")
serial_squash = Param.Bool(False,
"Squash prefetches with a later time on a subsequent miss")
degree = Param.Int(1,
"Degree of the prefetch depth")
latency = Param.Latency('10t',
"Latency of the prefetcher")
use_master_id = Param.Bool(True,
"Use the master id to separate calculations of prefetches")
data_accesses_only = Param.Bool(False,
"Only prefetch on data not on instruction accesses")
sys = Param.System(Parent.any, "System this device belongs to")
class GHBPrefetcher(BasePrefetcher):
type = 'GHBPrefetcher'
cxx_class = 'GHBPrefetcher'
class StridePrefetcher(BasePrefetcher):
type = 'StridePrefetcher'
cxx_class = 'StridePrefetcher'
class TaggedPrefetcher(BasePrefetcher):
type = 'TaggedPrefetcher'
cxx_class = 'TaggedPrefetcher'
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