1 # Copyright (c) 2006-2007 The Regents of The University of Michigan
2 # Copyright (c) 2009 Advanced Micro Devices, Inc.
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.
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.
28 # Authors: Brad Beckmann
32 from m5
.objects
import *
33 from m5
.defines
import buildEnv
36 # Note: the L1 Cache latency is only used by the sequencer on fast path hits
38 class L1Cache(RubyCache
):
42 # Note: the L2 Cache latency is not currently used
44 class L2Cache(RubyCache
):
48 # Probe filter is a cache, latency is not used
50 class ProbeFilter(RubyCache
):
53 def define_options(parser
):
54 parser
.add_option("--allow-atomic-migration", action
="store_true",
55 help="allow migratory sharing for atomic only accessed blocks")
56 parser
.add_option("--pf-on", action
="store_true",
57 help="Hammer: enable Probe Filter")
58 parser
.add_option("--dir-on", action
="store_true",
59 help="Hammer: enable Full-bit Directory")
61 def create_system(options
, system
, piobus
, dma_devices
):
63 if buildEnv
['PROTOCOL'] != 'MOESI_hammer':
64 panic("This script requires the MOESI_hammer protocol to be built.")
69 # The ruby network creation expects the list of nodes in the system to be
70 # consistent with the NetDest list. Therefore the l1 controller nodes must be
71 # listed before the directory nodes and directory nodes before dma nodes, etc.
78 # Must create the individual controllers before the network to ensure the
79 # controller constructors are called before the network constructor
81 block_size_bits
= int(math
.log(options
.cacheline_size
, 2))
83 for i
in xrange(options
.num_cpus
):
85 # First create the Ruby objects associated with this cpu
87 l1i_cache
= L1Cache(size
= options
.l1i_size
,
88 assoc
= options
.l1i_assoc
,
89 start_index_bit
= block_size_bits
)
90 l1d_cache
= L1Cache(size
= options
.l1d_size
,
91 assoc
= options
.l1d_assoc
,
92 start_index_bit
= block_size_bits
)
93 l2_cache
= L2Cache(size
= options
.l2_size
,
94 assoc
= options
.l2_assoc
,
95 start_index_bit
= block_size_bits
)
97 cpu_seq
= RubySequencer(version
= i
,
100 physMemPort
= system
.physmem
.port
,
101 physmem
= system
.physmem
)
104 cpu_seq
.pio_port
= piobus
.port
106 l1_cntrl
= L1Cache_Controller(version
= i
,
108 L1IcacheMemory
= l1i_cache
,
109 L1DcacheMemory
= l1d_cache
,
110 L2cacheMemory
= l2_cache
,
111 no_mig_atomic
= not \
112 options
.allow_atomic_migration
)
114 if options
.recycle_latency
:
115 l1_cntrl
.recycle_latency
= options
.recycle_latency
117 exec("system.l1_cntrl%d = l1_cntrl" % i
)
119 # Add controllers and sequencers to the appropriate lists
121 cpu_sequencers
.append(cpu_seq
)
122 l1_cntrl_nodes
.append(l1_cntrl
)
124 phys_mem_size
= long(system
.physmem
.range.second
) - \
125 long(system
.physmem
.range.first
) + 1
126 mem_module_size
= phys_mem_size
/ options
.num_dirs
129 # determine size and index bits for probe filter
130 # By default, the probe filter size is configured to be twice the
131 # size of the L2 cache.
133 pf_size
= MemorySize(options
.l2_size
)
134 pf_size
.value
= pf_size
.value
* 2
135 dir_bits
= int(math
.log(options
.num_dirs
, 2))
136 pf_bits
= int(math
.log(pf_size
.value
, 2))
137 if options
.numa_high_bit
:
138 if options
.numa_high_bit
> 0:
139 # if numa high bit explicitly set, make sure it does not overlap
140 # with the probe filter index
141 assert(options
.numa_high_bit
- dir_bits
> pf_bits
)
143 # set the probe filter start bit to just above the block offset
147 pf_start_bit
= dir_bits
+ 5
151 for i
in xrange(options
.num_dirs
):
153 # Create the Ruby objects associated with the directory controller
156 mem_cntrl
= RubyMemoryControl(version
= i
)
158 dir_size
= MemorySize('0B')
159 dir_size
.value
= mem_module_size
161 pf
= ProbeFilter(size
= pf_size
, assoc
= 4,
162 start_index_bit
= pf_start_bit
)
164 dir_cntrl
= Directory_Controller(version
= i
,
166 RubyDirectoryMemory( \
169 use_map
= options
.use_map
,
173 options
.numa_high_bit
),
175 memBuffer
= mem_cntrl
,
176 probe_filter_enabled
= options
.pf_on
,
177 full_bit_dir_enabled
= options
.dir_on
)
179 if options
.recycle_latency
:
180 dir_cntrl
.recycle_latency
= options
.recycle_latency
182 exec("system.dir_cntrl%d = dir_cntrl" % i
)
183 dir_cntrl_nodes
.append(dir_cntrl
)
185 for i
, dma_device
in enumerate(dma_devices
):
187 # Create the Ruby objects associated with the dma controller
189 dma_seq
= DMASequencer(version
= i
,
190 physMemPort
= system
.physmem
.port
,
191 physmem
= system
.physmem
)
193 dma_cntrl
= DMA_Controller(version
= i
,
194 dma_sequencer
= dma_seq
)
196 exec("system.dma_cntrl%d = dma_cntrl" % i
)
197 if dma_device
.type == 'MemTest':
198 exec("system.dma_cntrl%d.dma_sequencer.port = dma_device.test" % i
)
200 exec("system.dma_cntrl%d.dma_sequencer.port = dma_device.dma" % i
)
201 dma_cntrl_nodes
.append(dma_cntrl
)
203 if options
.recycle_latency
:
204 dma_cntrl
.recycle_latency
= options
.recycle_latency
206 all_cntrls
= l1_cntrl_nodes
+ dir_cntrl_nodes
+ dma_cntrl_nodes
208 return (cpu_sequencers
, dir_cntrl_nodes
, all_cntrls
)