Crossbar.py (9100:3caf131d7a95) Crossbar.py (9148:a7a72f42919e)
1# Copyright (c) 2010 Advanced Micro Devices, Inc.
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

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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: Steve Reinhardt
28
29from m5.params import *
30from m5.objects import *
31
1# Copyright (c) 2010 Advanced Micro Devices, Inc.
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

--- 15 unchanged lines hidden (view full) ---

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: Steve Reinhardt
28
29from m5.params import *
30from m5.objects import *
31
32from BaseTopology import BaseTopology
32from BaseTopology import SimpleTopology
33
33
34class Crossbar(BaseTopology):
34class Crossbar(SimpleTopology):
35 description='Crossbar'
36
35 description='Crossbar'
36
37 def __init__(self, controllers):
38 self.nodes = controllers
39
40 def makeTopology(self, options, IntLink, ExtLink, Router):
41 # Create an individual router for each controller plus one more for the
42 # centralized crossbar. The large numbers of routers are needed because
43 # external links do not model outgoing bandwidth in the simple network, but
44 # internal links do.
45
46 routers = [Router(router_id=i) for i in range(len(self.nodes)+1)]
47 ext_links = [ExtLink(link_id=i, ext_node=n, int_node=routers[i])
48 for (i, n) in enumerate(self.nodes)]
49 link_count = len(self.nodes)
50 xbar = routers[len(self.nodes)] # the crossbar router is the last router created
51 int_links = [IntLink(link_id=(link_count+i),
52 node_a=routers[i], node_b=xbar)
53 for i in range(len(self.nodes))]
54
55 return routers, int_links, ext_links
37 def makeTopology(self, options, IntLink, ExtLink, Router):
38 # Create an individual router for each controller plus one more for the
39 # centralized crossbar. The large numbers of routers are needed because
40 # external links do not model outgoing bandwidth in the simple network, but
41 # internal links do.
42
43 routers = [Router(router_id=i) for i in range(len(self.nodes)+1)]
44 ext_links = [ExtLink(link_id=i, ext_node=n, int_node=routers[i])
45 for (i, n) in enumerate(self.nodes)]
46 link_count = len(self.nodes)
47 xbar = routers[len(self.nodes)] # the crossbar router is the last router created
48 int_links = [IntLink(link_id=(link_count+i),
49 node_a=routers[i], node_b=xbar)
50 for i in range(len(self.nodes))]
51
52 return routers, int_links, ext_links
56