1# Copyright (c) 2012 ARM Limited
2# All rights reserved.
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license
9# terms below provided that you ensure that this notice is replicated
10# unmodified and in its entirety in all distributions of the software,
11# modified or unmodified, in source code or in binary form.
12#
13# Copyright (c) 2005-2008 The Regents of The University of Michigan
14# Copyright (c) 2011 Regents of the University of California
15# All rights reserved.
16#
17# Redistribution and use in source and binary forms, with or without
18# modification, are permitted provided that the following conditions are
19# met: redistributions of source code must retain the above copyright
20# notice, this list of conditions and the following disclaimer;
21# redistributions in binary form must reproduce the above copyright
22# notice, this list of conditions and the following disclaimer in the
23# documentation and/or other materials provided with the distribution;
24# neither the name of the copyright holders nor the names of its
25# contributors may be used to endorse or promote products derived from
26# this software without specific prior written permission.
27#
28# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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38# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39#
40# Authors: Nathan Binkert
41# Rick Strong
42# Andreas Hansson
43
44import sys
45
46from m5.defines import buildEnv
47from m5.params import *
48from m5.proxy import *
49
50from Bus import CoherentBus
51from InstTracer import InstTracer
52from ExeTracer import ExeTracer
53from MemObject import MemObject
54
55default_tracer = ExeTracer()
56
57if buildEnv['TARGET_ISA'] == 'alpha':
58 from AlphaTLB import AlphaDTB, AlphaITB
59 from AlphaInterrupts import AlphaInterrupts
60 from AlphaISA import AlphaISA
61 isa_class = AlphaISA
62elif buildEnv['TARGET_ISA'] == 'sparc':
63 from SparcTLB import SparcTLB
64 from SparcInterrupts import SparcInterrupts
65 from SparcISA import SparcISA
66 isa_class = SparcISA
67elif buildEnv['TARGET_ISA'] == 'x86':
68 from X86TLB import X86TLB
69 from X86LocalApic import X86LocalApic
70 from X86ISA import X86ISA
71 isa_class = X86ISA
72elif buildEnv['TARGET_ISA'] == 'mips':
73 from MipsTLB import MipsTLB
74 from MipsInterrupts import MipsInterrupts
75 from MipsISA import MipsISA
76 isa_class = MipsISA
77elif buildEnv['TARGET_ISA'] == 'arm':
78 from ArmTLB import ArmTLB
79 from ArmInterrupts import ArmInterrupts
80 from ArmISA import ArmISA
81 isa_class = ArmISA
82elif buildEnv['TARGET_ISA'] == 'power':
83 from PowerTLB import PowerTLB
84 from PowerInterrupts import PowerInterrupts
85 from PowerISA import PowerISA
86 isa_class = PowerISA
87
88class BaseCPU(MemObject):
89 type = 'BaseCPU'
90 abstract = True
91 cxx_header = "cpu/base.hh"
92
93 @classmethod
94 def export_methods(cls, code):
95 code('''
96 void switchOut();
97 void takeOverFrom(BaseCPU *cpu);
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99''')
100
101 def takeOverFrom(self, old_cpu):
102 self._ccObject.takeOverFrom(old_cpu._ccObject)
103
104
105 system = Param.System(Parent.any, "system object")
106 cpu_id = Param.Int(-1, "CPU identifier")
107 numThreads = Param.Unsigned(1, "number of HW thread contexts")
108
109 function_trace = Param.Bool(False, "Enable function trace")
110 function_trace_start = Param.Tick(0, "Tick to start function trace")
111
112 checker = Param.BaseCPU(NULL, "checker CPU")
113
114 do_checkpoint_insts = Param.Bool(True,
115 "enable checkpoint pseudo instructions")
116 do_statistics_insts = Param.Bool(True,
117 "enable statistics pseudo instructions")
118
119 profile = Param.Latency('0ns', "trace the kernel stack")
120 do_quiesce = Param.Bool(True, "enable quiesce instructions")
121
122 workload = VectorParam.Process([], "processes to run")
123
124 if buildEnv['TARGET_ISA'] == 'sparc':
125 dtb = Param.SparcTLB(SparcTLB(), "Data TLB")
126 itb = Param.SparcTLB(SparcTLB(), "Instruction TLB")
127 interrupts = Param.SparcInterrupts(
128 NULL, "Interrupt Controller")
129 isa = VectorParam.SparcISA([ isa_class() ], "ISA instance")
130 elif buildEnv['TARGET_ISA'] == 'alpha':
131 dtb = Param.AlphaTLB(AlphaDTB(), "Data TLB")
132 itb = Param.AlphaTLB(AlphaITB(), "Instruction TLB")
133 interrupts = Param.AlphaInterrupts(
134 NULL, "Interrupt Controller")
135 isa = VectorParam.AlphaISA([ isa_class() ], "ISA instance")
136 elif buildEnv['TARGET_ISA'] == 'x86':
137 dtb = Param.X86TLB(X86TLB(), "Data TLB")
138 itb = Param.X86TLB(X86TLB(), "Instruction TLB")
139 interrupts = Param.X86LocalApic(NULL, "Interrupt Controller")
140 isa = VectorParam.X86ISA([ isa_class() ], "ISA instance")
141 elif buildEnv['TARGET_ISA'] == 'mips':
142 dtb = Param.MipsTLB(MipsTLB(), "Data TLB")
143 itb = Param.MipsTLB(MipsTLB(), "Instruction TLB")
144 interrupts = Param.MipsInterrupts(
145 NULL, "Interrupt Controller")
146 isa = VectorParam.MipsISA([ isa_class() ], "ISA instance")
147 elif buildEnv['TARGET_ISA'] == 'arm':
148 dtb = Param.ArmTLB(ArmTLB(), "Data TLB")
149 itb = Param.ArmTLB(ArmTLB(), "Instruction TLB")
150 interrupts = Param.ArmInterrupts(
151 NULL, "Interrupt Controller")
152 isa = VectorParam.ArmISA([ isa_class() ], "ISA instance")
153 elif buildEnv['TARGET_ISA'] == 'power':
154 UnifiedTLB = Param.Bool(True, "Is this a Unified TLB?")
155 dtb = Param.PowerTLB(PowerTLB(), "Data TLB")
156 itb = Param.PowerTLB(PowerTLB(), "Instruction TLB")
157 interrupts = Param.PowerInterrupts(
158 NULL, "Interrupt Controller")
159 isa = VectorParam.PowerISA([ isa_class() ], "ISA instance")
160 else:
161 print "Don't know what TLB to use for ISA %s" % \
162 buildEnv['TARGET_ISA']
163 sys.exit(1)
164
165 max_insts_all_threads = Param.Counter(0,
166 "terminate when all threads have reached this inst count")
167 max_insts_any_thread = Param.Counter(0,
168 "terminate when any thread reaches this inst count")
169 max_loads_all_threads = Param.Counter(0,
170 "terminate when all threads have reached this load count")
171 max_loads_any_thread = Param.Counter(0,
172 "terminate when any thread reaches this load count")
173 progress_interval = Param.Frequency('0Hz',
174 "frequency to print out the progress message")
175
176 defer_registration = Param.Bool(False,
177 "defer registration with system (for sampling)")
178
179 tracer = Param.InstTracer(default_tracer, "Instruction tracer")
180
181 icache_port = MasterPort("Instruction Port")
182 dcache_port = MasterPort("Data Port")
183 _cached_ports = ['icache_port', 'dcache_port']
184
185 if buildEnv['TARGET_ISA'] in ['x86', 'arm']:
186 _cached_ports += ["itb.walker.port", "dtb.walker.port"]
187
188 _uncached_slave_ports = []
189 _uncached_master_ports = []
190 if buildEnv['TARGET_ISA'] == 'x86':
191 _uncached_slave_ports += ["interrupts.pio", "interrupts.int_slave"]
192 _uncached_master_ports += ["interrupts.int_master"]
193
194 def createInterruptController(self):
195 if buildEnv['TARGET_ISA'] == 'sparc':
196 self.interrupts = SparcInterrupts()
197 elif buildEnv['TARGET_ISA'] == 'alpha':
198 self.interrupts = AlphaInterrupts()
199 elif buildEnv['TARGET_ISA'] == 'x86':
200 _localApic = X86LocalApic(pio_addr=0x2000000000000000)
201 self.interrupts = _localApic
202 elif buildEnv['TARGET_ISA'] == 'mips':
203 self.interrupts = MipsInterrupts()
204 elif buildEnv['TARGET_ISA'] == 'arm':
205 self.interrupts = ArmInterrupts()
206 elif buildEnv['TARGET_ISA'] == 'power':
207 self.interrupts = PowerInterrupts()
208 else:
209 print "Don't know what Interrupt Controller to use for ISA %s" % \
210 buildEnv['TARGET_ISA']
211 sys.exit(1)
212
213 def connectCachedPorts(self, bus):
214 for p in self._cached_ports:
215 exec('self.%s = bus.slave' % p)
216
217 def connectUncachedPorts(self, bus):
218 for p in self._uncached_slave_ports:
219 exec('self.%s = bus.master' % p)
220 for p in self._uncached_master_ports:
221 exec('self.%s = bus.slave' % p)
222
223 def connectAllPorts(self, cached_bus, uncached_bus = None):
224 self.connectCachedPorts(cached_bus)
225 if not uncached_bus:
226 uncached_bus = cached_bus
227 self.connectUncachedPorts(uncached_bus)
228
229 def addPrivateSplitL1Caches(self, ic, dc, iwc = None, dwc = None):
230 self.icache = ic
231 self.dcache = dc
232 self.icache_port = ic.cpu_side
233 self.dcache_port = dc.cpu_side
234 self._cached_ports = ['icache.mem_side', 'dcache.mem_side']
235 if buildEnv['TARGET_ISA'] in ['x86', 'arm']:
236 if iwc and dwc:
237 self.itb_walker_cache = iwc
238 self.dtb_walker_cache = dwc
239 self.itb.walker.port = iwc.cpu_side
240 self.dtb.walker.port = dwc.cpu_side
241 self._cached_ports += ["itb_walker_cache.mem_side", \
242 "dtb_walker_cache.mem_side"]
243 else:
244 self._cached_ports += ["itb.walker.port", "dtb.walker.port"]
245
246 # Checker doesn't need its own tlb caches because it does
247 # functional accesses only
248 if self.checker != NULL:
249 self._cached_ports += ["checker.itb.walker.port", \
250 "checker.dtb.walker.port"]
251
252 def addTwoLevelCacheHierarchy(self, ic, dc, l2c, iwc = None, dwc = None):
253 self.addPrivateSplitL1Caches(ic, dc, iwc, dwc)
254 # Override the default bus clock of 1 GHz and uses the CPU
255 # clock for the L1-to-L2 bus, and also set a width of 32 bytes
256 # (256-bits), which is four times that of the default bus.
257 self.toL2Bus = CoherentBus(clock = Parent.clock, width = 32)
258 self.connectCachedPorts(self.toL2Bus)
259 self.l2cache = l2c
260 self.toL2Bus.master = self.l2cache.cpu_side
261 self._cached_ports = ['l2cache.mem_side']
262
263 def createThreads(self):
264 self.isa = [ isa_class() for i in xrange(self.numThreads) ]
265 if self.checker != NULL:
266 self.checker.createThreads()
267
268 def addCheckerCpu(self):
269 pass
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