1# -*- mode:python -*-
2# Copyright (c) 2009-2014, 2017 ARM Limited
3# All rights reserved.
4#
5# The license below extends only to copyright in the software and shall
6# not be construed as granting a license to any other intellectual
7# property including but not limited to intellectual property relating
8# to a hardware implementation of the functionality of the software

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38# Andreas Sandberg
39
40from m5.defines import buildEnv
41from m5.SimObject import *
42from m5.params import *
43from m5.params import isNullPointer
44from m5.proxy import *
45
46class ProbeEvent(object):
47 def __init__(self, pmu, _eventId, obj, *listOfNames):
48 self.obj = obj
49 self.names = listOfNames
50 self.eventId = _eventId
51 self.pmu = pmu
52
53 def register(self):
54 if self.obj:
55 for name in self.names:
56 self.pmu.getCCObject().addEventProbe(self.eventId,
57 self.obj.getCCObject(), name)
58
59class SoftwareIncrement(object):
60 def __init__(self,pmu, _eventId):
61 self.eventId = _eventId
62 self.pmu = pmu
63
64 def register(self):
65 self.pmu.getCCObject().addSoftwareIncrementEvent(self.eventId)
66
67ARCH_EVENT_CORE_CYCLES = 0x11
68
69class ArmPMU(SimObject):
70
71 type = 'ArmPMU'
72 cxx_class = 'ArmISA::PMU'
73 cxx_header = 'arch/arm/pmu.hh'
74
75 cxx_exports = [
76 PyBindMethod("addEventProbe"),
77 PyBindMethod("addSoftwareIncrementEvent"),
78 ]
79
55 # To prevent cycles in the configuration hierarchy, we don't keep
56 # a list of supported events as a configuration param. Instead, we
57 # keep them in a local list and register them using the
58 # addEventProbe interface when other SimObjects register their
59 # probe listeners.
60 _deferred_event_types = []
80 _events = None
81
82 def addEvent(self, newObject):
83 if not (isinstance(newObject, ProbeEvent)
84 or isinstance(newObject, SoftwareIncrement)):
85 raise TypeError("argument must be of ProbeEvent or "
86 "SoftwareIncrement type")
87
88 if not self._events:
89 self._events = []
90
91 self._events.append(newObject)
92
93 # Override the normal SimObject::regProbeListeners method and
94 # register deferred event handlers.
95 def regProbeListeners(self):
64 for event_id, obj, name in self._deferred_event_types:
65 self.getCCObject().addEventProbe(event_id, obj.getCCObject(), name)
96 for event in self._events:
97 event.register()
98
99 self.getCCObject().regProbeListeners()
100
69 def addEventProbe(self, event_id, obj, *args):
70 """Add a probe-based event to the PMU if obj is not None."""
71
72 if obj is None:
73 return
74
75 for name in args:
76 self._deferred_event_types.append((event_id, obj, name))
77
101 def addArchEvents(self,
102 cpu=None,
103 itb=None, dtb=None,
104 icache=None, dcache=None,
105 l2cache=None):
106 """Add architected events to the PMU.
107
108 This method can be called multiple times with only a subset of

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113
114 CPU events should also be registered once per CPU that is
115 sharing the PMU (e.g., when switching between CPU models).
116 """
117
118 bpred = cpu.branchPred if cpu and not isNullPointer(cpu.branchPred) \
119 else None
120
121 self.addEvent(SoftwareIncrement(self,0x00))
122 # 0x01: L1I_CACHE_REFILL
99 self.addEventProbe(0x02, itb, "Refills")
123 self.addEvent(ProbeEvent(self,0x02, itb, "Refills"))
124 # 0x03: L1D_CACHE_REFILL
125 # 0x04: L1D_CACHE
102 self.addEventProbe(0x05, dtb, "Refills")
103 self.addEventProbe(0x06, cpu, "RetiredLoads")
104 self.addEventProbe(0x07, cpu, "RetiredStores")
105 self.addEventProbe(0x08, cpu, "RetiredInsts")
126 self.addEvent(ProbeEvent(self,0x05, dtb, "Refills"))
127 self.addEvent(ProbeEvent(self,0x06, cpu, "RetiredLoads"))
128 self.addEvent(ProbeEvent(self,0x07, cpu, "RetiredStores"))
129 self.addEvent(ProbeEvent(self,0x08, cpu, "RetiredInsts"))
130 # 0x09: EXC_TAKEN
131 # 0x0A: EXC_RETURN
132 # 0x0B: CID_WRITE_RETIRED
109 self.addEventProbe(0x0C, cpu, "RetiredBranches")
133 self.addEvent(ProbeEvent(self,0x0C, cpu, "RetiredBranches"))
134 # 0x0D: BR_IMMED_RETIRED
135 # 0x0E: BR_RETURN_RETIRED
136 # 0x0F: UNALIGEND_LDST_RETIRED
113 self.addEventProbe(0x10, bpred, "Misses")
114 self.addEventProbe(0x11, cpu, "ActiveCycles")
115 self.addEventProbe(0x12, bpred, "Branches")
116 self.addEventProbe(0x13, cpu, "RetiredLoads", "RetiredStores")
137 self.addEvent(ProbeEvent(self,0x10, bpred, "Misses"))
138 self.addEvent(ProbeEvent(self, ARCH_EVENT_CORE_CYCLES, cpu,
139 "ActiveCycles"))
140 self.addEvent(ProbeEvent(self,0x12, bpred, "Branches"))
141 self.addEvent(ProbeEvent(self,0x13, cpu, "RetiredLoads",
142 "RetiredStores"))
143 # 0x14: L1I_CACHE
144 # 0x15: L1D_CACHE_WB
145 # 0x16: L2D_CACHE
146 # 0x17: L2D_CACHE_REFILL
147 # 0x18: L2D_CACHE_WB
148 # 0x19: BUS_ACCESS
149 # 0x1A: MEMORY_ERROR
150 # 0x1B: INST_SPEC

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165 # 0x2A: L3D_CACHE_REFILL
166 # 0x2B: L3D_CACHE
167 # 0x2C: L3D_CACHE_WB
168 # 0x2D: L2D_TLB_REFILL
169 # 0x2E: L2I_TLB_REFILL
170 # 0x2F: L2D_TLB
171 # 0x30: L2I_TLB
172
173 cycleEventId = Param.Int(ARCH_EVENT_CORE_CYCLES, "Cycle event id")
174 platform = Param.Platform(Parent.any, "Platform this device is part of.")
175 eventCounters = Param.Int(31, "Number of supported PMU counters")
176 pmuInterrupt = Param.Int(68, "PMU GIC interrupt number")