1 # Copyright (c) 2009 Advanced Micro Devices, Inc.
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.
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.
27 # Authors: Steve Reinhardt
30 from m5
.params
import *
31 from m5
.SimObject
import SimObject
33 class Link(SimObject
):
35 latency
= Param
.Int(1, "")
36 bw_multiplier
= Param
.Int("")
37 weight
= Param
.Int(1, "")
41 ext_node
= Param
.RubyController("External node")
42 int_node
= Param
.Int("ID of internal node")
47 node_a
= Param
.Int("ID of internal node on one end")
48 node_b
= Param
.Int("ID of internal node on other end")
51 class Topology(SimObject
):
53 ext_links
= VectorParam
.ExtLink("Links to external nodes")
54 int_links
= VectorParam
.IntLink("Links between internal nodes")
55 num_int_nodes
= Param
.Int("Nunber of internal nodes")
56 print_config
= Param
.Bool(False,
57 "display topology config in the stats file")
59 def makeCrossbar(nodes
):
60 ext_links
= [ExtLink(ext_node
=n
, int_node
=i
)
61 for (i
, n
) in enumerate(nodes
)]
62 xbar
= len(nodes
) # node ID for crossbar switch
63 int_links
= [IntLink(node_a
=i
, node_b
=xbar
) for i
in range(len(nodes
))]
64 return Topology(ext_links
=ext_links
, int_links
=int_links
,
65 num_int_nodes
=len(nodes
)+1)
67 def makeMesh(nodes
, num_routers
, num_rows
):
69 # There must be an evenly divisible number of cntrls to routers
70 # Also, obviously the number or rows must be <= the number of routers
72 cntrls_per_router
, remainder
= divmod(len(nodes
), num_routers
)
73 assert(num_rows
<= num_routers
)
74 num_columns
= int(num_routers
/ num_rows
)
75 assert(num_columns
* num_rows
== num_routers
)
78 # Add all but the remainder nodes to the list of nodes to be uniformly
79 # distributed across the network.
83 for node_index
in xrange(len(nodes
)):
84 if node_index
< (len(nodes
) - remainder
):
85 network_nodes
.append(nodes
[node_index
])
87 remainder_nodes
.append(nodes
[node_index
])
90 # Connect each node to the appropriate router
93 for (i
, n
) in enumerate(network_nodes
):
94 cntrl_level
, router_id
= divmod(i
, num_routers
)
95 assert(cntrl_level
< cntrls_per_router
)
96 ext_links
.append(ExtLink(ext_node
=n
, int_node
=router_id
))
99 # Connect the remainding nodes to router 0. These should only be DMA nodes.
101 for (i
, node
) in enumerate(remainder_nodes
):
102 assert(node
.type == 'DMA_Controller')
103 assert(i
< remainder
)
104 ext_links
.append(ExtLink(ext_node
=node
, int_node
=0))
107 # Create the mesh links. First row (east-west) links then column
108 # (north-south) links
111 for row
in xrange(num_rows
):
112 for col
in xrange(num_columns
):
113 if (col
+ 1 < num_columns
):
114 east_id
= col
+ (row
* num_columns
)
115 west_id
= (col
+ 1) + (row
* num_columns
)
116 int_links
.append(IntLink(node_a
=east_id
,
119 for col
in xrange(num_columns
):
120 for row
in xrange(num_rows
):
121 if (row
+ 1 < num_rows
):
122 north_id
= col
+ (row
* num_columns
)
123 south_id
= col
+ ((row
+ 1) * num_columns
)
124 int_links
.append(IntLink(node_a
=north_id
,
128 return Topology(ext_links
=ext_links
,
130 num_int_nodes
=num_routers
)
132 class RubyNetwork(SimObject
):
134 cxx_class
= 'Network'
136 number_of_virtual_networks
= Param
.Int(10, "");
137 topology
= Param
.Topology("");
138 buffer_size
= Param
.Int(0,
139 "default buffer size; 0 indicates infinite buffering");
140 endpoint_bandwidth
= Param
.Int(10000, "");
141 adaptive_routing
= Param
.Bool(True, "");
142 link_latency
= Param
.Int(1,
143 "local memory latency ?? NetworkLinkLatency");
144 control_msg_size
= Param
.Int(8, "");