ArmPMU.py revision 10461:afeb5cdb3907
1# -*- mode:python -*- 2# Copyright (c) 2009-2014 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 9# licensed hereunder. You may use the software subject to the license 10# terms below provided that you ensure that this notice is replicated 11# unmodified and in its entirety in all distributions of the software, 12# modified or unmodified, in source code or in binary form. 13# 14# Redistribution and use in source and binary forms, with or without 15# modification, are permitted provided that the following conditions are 16# met: redistributions of source code must retain the above copyright 17# notice, this list of conditions and the following disclaimer; 18# redistributions in binary form must reproduce the above copyright 19# notice, this list of conditions and the following disclaimer in the 20# documentation and/or other materials provided with the distribution; 21# neither the name of the copyright holders nor the names of its 22# contributors may be used to endorse or promote products derived from 23# this software without specific prior written permission. 24# 25# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36# 37# Authors: Matt Horsnell 38# Andreas Sandberg 39 40from m5.defines import buildEnv 41from m5.SimObject import SimObject 42from m5.params import * 43from m5.params import isNullPointer 44from m5.proxy import * 45 46class ArmPMU(SimObject): 47 type = 'ArmPMU' 48 cxx_class = 'ArmISA::PMU' 49 cxx_header = 'arch/arm/pmu.hh' 50 51 @classmethod 52 def export_methods(cls, code): 53 code(''' 54 void addEventProbe(unsigned int id, 55 SimObject *obj, const char *name); 56''') 57 58 # To prevent cycles in the configuration hierarchy, we don't keep 59 # a list of supported events as a configuration param. Instead, we 60 # keep them in a local list and register them using the 61 # addEventProbe interface when other SimObjects register their 62 # probe listeners. 63 _deferred_event_types = [] 64 # Override the normal SimObject::regProbeListeners method and 65 # register deferred event handlers. 66 def regProbeListeners(self): 67 for event_id, obj, name in self._deferred_event_types: 68 self.getCCObject().addEventProbe(event_id, obj.getCCObject(), name) 69 70 self.getCCObject().regProbeListeners() 71 72 def addEventProbe(self, event_id, obj, *args): 73 """Add a probe-based event to the PMU if obj is not None.""" 74 75 if obj is None: 76 return 77 78 for name in args: 79 self._deferred_event_types.append((event_id, obj, name)) 80 81 platform = Param.Platform(Parent.any, "Platform this device is part of.") 82 eventCounters = Param.Int(31, "Number of supported PMU counters") 83 pmuInterrupt = Param.Int(68, "PMU GIC interrupt number") 84