BaseCPU.py revision 4776 
1# Copyright (c) 2005-2007 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright
9# notice, this list of conditions and the following disclaimer in the
10# documentation and/or other materials provided with the distribution;
11# neither the name of the copyright holders nor the names of its
12# contributors may be used to endorse or promote products derived from
13# this software without specific prior written permission.
14#
15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26#
27# Authors: Nathan Binkert
28
29from m5.SimObject import SimObject
30from m5.params import *
31from m5.proxy import *
32from m5 import build_env
33from Bus import Bus
34from InstTracer import InstTracer
35from ExeTracer import ExeTracer
36import sys
37
38default_tracer = ExeTracer()
39
40if build_env['FULL_SYSTEM']:
41    if build_env['TARGET_ISA'] == 'alpha':
42        from AlphaTLB import AlphaDTB, AlphaITB
43
44    if build_env['TARGET_ISA'] == 'sparc':
45        from SparcTLB import SparcDTB, SparcITB
46
47class BaseCPU(SimObject):
48    type = 'BaseCPU'
49    abstract = True
50
51    system = Param.System(Parent.any, "system object")
52    cpu_id = Param.Int("CPU identifier")
53
54    if build_env['FULL_SYSTEM']:
55        do_quiesce = Param.Bool(True, "enable quiesce instructions")
56        do_checkpoint_insts = Param.Bool(True,
57            "enable checkpoint pseudo instructions")
58        do_statistics_insts = Param.Bool(True,
59            "enable statistics pseudo instructions")
60
61        if build_env['TARGET_ISA'] == 'sparc':
62            dtb = Param.SparcDTB(SparcDTB(), "Data TLB")
63            itb = Param.SparcITB(SparcITB(), "Instruction TLB")
64        elif build_env['TARGET_ISA'] == 'alpha':
65            dtb = Param.AlphaDTB(AlphaDTB(), "Data TLB")
66            itb = Param.AlphaITB(AlphaITB(), "Instruction TLB")
67        else:
68            print "Unknown architecture, can't pick TLBs"
69            sys.exit(1)
70    else:
71        workload = VectorParam.Process("processes to run")
72
73    max_insts_all_threads = Param.Counter(0,
74        "terminate when all threads have reached this inst count")
75    max_insts_any_thread = Param.Counter(0,
76        "terminate when any thread reaches this inst count")
77    max_loads_all_threads = Param.Counter(0,
78        "terminate when all threads have reached this load count")
79    max_loads_any_thread = Param.Counter(0,
80        "terminate when any thread reaches this load count")
81    progress_interval = Param.Tick(0,
82        "interval to print out the progress message")
83
84    defer_registration = Param.Bool(False,
85        "defer registration with system (for sampling)")
86
87    clock = Param.Clock('1t', "clock speed")
88    phase = Param.Latency('0ns', "clock phase")
89
90    tracer = Param.InstTracer(default_tracer, "Instruction tracer")
91
92    _mem_ports = []
93
94    def connectMemPorts(self, bus):
95        for p in self._mem_ports:
96            exec('self.%s = bus.port' % p)
97
98    def addPrivateSplitL1Caches(self, ic, dc):
99        assert(len(self._mem_ports) == 2)
100        self.icache = ic
101        self.dcache = dc
102        self.icache_port = ic.cpu_side
103        self.dcache_port = dc.cpu_side
104        self._mem_ports = ['icache.mem_side', 'dcache.mem_side']
105
106    def addTwoLevelCacheHierarchy(self, ic, dc, l2c):
107        self.addPrivateSplitL1Caches(ic, dc)
108        self.toL2Bus = Bus()
109        self.connectMemPorts(self.toL2Bus)
110        self.l2cache = l2c
111        self.l2cache.cpu_side = self.toL2Bus.port
112        self._mem_ports = ['l2cache.mem_side']
113