Prefetcher.py revision 8831 
1from m5.SimObject import SimObject
2from m5.params import *
3class BasePrefetcher(SimObject):
4    type = 'BasePrefetcher'
5    abstract = True
6    size = Param.Int(100,
7         "Number of entries in the hardware prefetch queue")
8    cross_pages = Param.Bool(False,
9         "Allow prefetches to cross virtual page boundaries")
10    serial_squash = Param.Bool(False,
11         "Squash prefetches with a later time on a subsequent miss")
12    degree = Param.Int(1,
13         "Degree of the prefetch depth")
14    latency = Param.Latency('10t',
15         "Latency of the prefetcher")
16    use_cpu_id = Param.Bool(True,
17         "Use the CPU ID to separate calculations of prefetches")
18    data_accesses_only = Param.Bool(False,
19         "Only prefetch on data not on instruction accesses")
20
21class GHBPrefetcher(BasePrefetcher):
22    type = 'GHBPrefetcher'
23    cxx_class = 'GHBPrefetcher'
24
25class StridePrefetcher(BasePrefetcher):
26    type = 'StridePrefetcher'
27    cxx_class = 'StridePrefetcher'
28
29class TaggedPrefetcher(BasePrefetcher):
30    type = 'TaggedPrefetcher'
31    cxx_class = 'TaggedPrefetcher'
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