BaseCPU.py revision 8707 
1# Copyright (c) 2005-2008 The Regents of The University of Michigan
2# Copyright (c) 2011 Regents of the University of California
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;
9# redistributions in binary form must reproduce the above copyright
10# notice, this list of conditions and the following disclaimer in the
11# documentation and/or other materials provided with the distribution;
12# neither the name of the copyright holders nor the names of its
13# contributors may be used to endorse or promote products derived from
14# this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28# Authors: Nathan Binkert
29#          Rick Strong
30
31import sys
32
33from m5.defines import buildEnv
34from m5.params import *
35from m5.proxy import *
36
37from Bus import Bus
38from InstTracer import InstTracer
39from ExeTracer import ExeTracer
40from MemObject import MemObject
41
42default_tracer = ExeTracer()
43
44if buildEnv['TARGET_ISA'] == 'alpha':
45    from AlphaTLB import AlphaDTB, AlphaITB
46    if buildEnv['FULL_SYSTEM']:
47        from AlphaInterrupts import AlphaInterrupts
48elif buildEnv['TARGET_ISA'] == 'sparc':
49    from SparcTLB import SparcTLB
50    if buildEnv['FULL_SYSTEM']:
51        from SparcInterrupts import SparcInterrupts
52elif buildEnv['TARGET_ISA'] == 'x86':
53    from X86TLB import X86TLB
54    if buildEnv['FULL_SYSTEM']:
55        from X86LocalApic import X86LocalApic
56elif buildEnv['TARGET_ISA'] == 'mips':
57    from MipsTLB import MipsTLB
58    if buildEnv['FULL_SYSTEM']:
59        from MipsInterrupts import MipsInterrupts
60elif buildEnv['TARGET_ISA'] == 'arm':
61    from ArmTLB import ArmTLB
62    if buildEnv['FULL_SYSTEM']:
63        from ArmInterrupts import ArmInterrupts
64elif buildEnv['TARGET_ISA'] == 'power':
65    from PowerTLB import PowerTLB
66    if buildEnv['FULL_SYSTEM']:
67        from PowerInterrupts import PowerInterrupts
68
69class BaseCPU(MemObject):
70    type = 'BaseCPU'
71    abstract = True
72
73    system = Param.System(Parent.any, "system object")
74    cpu_id = Param.Int(-1, "CPU identifier")
75    numThreads = Param.Unsigned(1, "number of HW thread contexts")
76
77    function_trace = Param.Bool(False, "Enable function trace")
78    function_trace_start = Param.Tick(0, "Cycle to start function trace")
79
80    checker = Param.BaseCPU(NULL, "checker CPU")
81
82    do_checkpoint_insts = Param.Bool(True,
83        "enable checkpoint pseudo instructions")
84    do_statistics_insts = Param.Bool(True,
85        "enable statistics pseudo instructions")
86
87    if buildEnv['FULL_SYSTEM']:
88        profile = Param.Latency('0ns', "trace the kernel stack")
89        do_quiesce = Param.Bool(True, "enable quiesce instructions")
90    else:
91        workload = VectorParam.Process("processes to run")
92
93    if buildEnv['TARGET_ISA'] == 'sparc':
94        dtb = Param.SparcTLB(SparcTLB(), "Data TLB")
95        itb = Param.SparcTLB(SparcTLB(), "Instruction TLB")
96        if buildEnv['FULL_SYSTEM']:
97            interrupts = Param.SparcInterrupts(
98                SparcInterrupts(), "Interrupt Controller")
99    elif buildEnv['TARGET_ISA'] == 'alpha':
100        dtb = Param.AlphaTLB(AlphaDTB(), "Data TLB")
101        itb = Param.AlphaTLB(AlphaITB(), "Instruction TLB")
102        if buildEnv['FULL_SYSTEM']:
103            interrupts = Param.AlphaInterrupts(
104                AlphaInterrupts(), "Interrupt Controller")
105    elif buildEnv['TARGET_ISA'] == 'x86':
106        dtb = Param.X86TLB(X86TLB(), "Data TLB")
107        itb = Param.X86TLB(X86TLB(), "Instruction TLB")
108        if buildEnv['FULL_SYSTEM']:
109            _localApic = X86LocalApic(pio_addr=0x2000000000000000)
110            interrupts = \
111                Param.X86LocalApic(_localApic, "Interrupt Controller")
112    elif buildEnv['TARGET_ISA'] == 'mips':
113        dtb = Param.MipsTLB(MipsTLB(), "Data TLB")
114        itb = Param.MipsTLB(MipsTLB(), "Instruction TLB")
115        if buildEnv['FULL_SYSTEM']:
116            interrupts = Param.MipsInterrupts(
117                    MipsInterrupts(), "Interrupt Controller")
118    elif buildEnv['TARGET_ISA'] == 'arm':
119        dtb = Param.ArmTLB(ArmTLB(), "Data TLB")
120        itb = Param.ArmTLB(ArmTLB(), "Instruction TLB")
121        if buildEnv['FULL_SYSTEM']:
122            interrupts = Param.ArmInterrupts(
123                    ArmInterrupts(), "Interrupt Controller")
124    elif buildEnv['TARGET_ISA'] == 'power':
125        UnifiedTLB = Param.Bool(True, "Is this a Unified TLB?")
126        dtb = Param.PowerTLB(PowerTLB(), "Data TLB")
127        itb = Param.PowerTLB(PowerTLB(), "Instruction TLB")
128        if buildEnv['FULL_SYSTEM']:
129            interrupts = Param.PowerInterrupts(
130                    PowerInterrupts(), "Interrupt Controller")
131    else:
132        print "Don't know what TLB to use for ISA %s" % \
133            buildEnv['TARGET_ISA']
134        sys.exit(1)
135
136    max_insts_all_threads = Param.Counter(0,
137        "terminate when all threads have reached this inst count")
138    max_insts_any_thread = Param.Counter(0,
139        "terminate when any thread reaches this inst count")
140    max_loads_all_threads = Param.Counter(0,
141        "terminate when all threads have reached this load count")
142    max_loads_any_thread = Param.Counter(0,
143        "terminate when any thread reaches this load count")
144    progress_interval = Param.Tick(0,
145        "interval to print out the progress message")
146
147    defer_registration = Param.Bool(False,
148        "defer registration with system (for sampling)")
149
150    clock = Param.Clock('1t', "clock speed")
151    phase = Param.Latency('0ns', "clock phase")
152
153    tracer = Param.InstTracer(default_tracer, "Instruction tracer")
154
155    icache_port = Port("Instruction Port")
156    dcache_port = Port("Data Port")
157    _cached_ports = ['icache_port', 'dcache_port']
158
159    if buildEnv['TARGET_ISA'] in ['x86', 'arm'] and buildEnv['FULL_SYSTEM']:
160        _cached_ports += ["itb.walker.port", "dtb.walker.port"]
161
162    _uncached_ports = []
163    if buildEnv['TARGET_ISA'] == 'x86' and buildEnv['FULL_SYSTEM']:
164        _uncached_ports = ["interrupts.pio", "interrupts.int_port"]
165
166    def connectCachedPorts(self, bus):
167        for p in self._cached_ports:
168            exec('self.%s = bus.port' % p)
169
170    def connectUncachedPorts(self, bus):
171        for p in self._uncached_ports:
172            exec('self.%s = bus.port' % p)
173
174    def connectAllPorts(self, cached_bus, uncached_bus = None):
175        self.connectCachedPorts(cached_bus)
176        if not uncached_bus:
177            uncached_bus = cached_bus
178        self.connectUncachedPorts(uncached_bus)
179
180    def addPrivateSplitL1Caches(self, ic, dc, iwc = None, dwc = None):
181        assert(len(self._cached_ports) < 7)
182        self.icache = ic
183        self.dcache = dc
184        self.icache_port = ic.cpu_side
185        self.dcache_port = dc.cpu_side
186        self._cached_ports = ['icache.mem_side', 'dcache.mem_side']
187        if buildEnv['FULL_SYSTEM']:
188            if buildEnv['TARGET_ISA'] in ['x86', 'arm']:
189                if iwc and dwc:
190                    self.itb_walker_cache = iwc
191                    self.dtb_walker_cache = dwc
192                    self.itb.walker.port = iwc.cpu_side
193                    self.dtb.walker.port = dwc.cpu_side
194                    self._cached_ports += ["itb_walker_cache.mem_side", \
195                                           "dtb_walker_cache.mem_side"]
196                else:
197                    self._cached_ports += ["itb.walker.port", "dtb.walker.port"]
198
199    def addTwoLevelCacheHierarchy(self, ic, dc, l2c, iwc = None, dwc = None):
200        self.addPrivateSplitL1Caches(ic, dc, iwc, dwc)
201        self.toL2Bus = Bus()
202        self.connectCachedPorts(self.toL2Bus)
203        self.l2cache = l2c
204        self.l2cache.cpu_side = self.toL2Bus.port
205        self._cached_ports = ['l2cache.mem_side']
206