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authorNilay Vaish <nilay@cs.wisc.edu>2014-09-01 16:55:47 -0500
committerNilay Vaish <nilay@cs.wisc.edu>2014-09-01 16:55:47 -0500
commit7a0d5aafe4b845a2d1cff6210d7c6ee66e8aba61 (patch)
tree6ef6157a33d226688f2909998b71936976ee755b /configs/ruby/MOESI_CMP_directory.py
parent00286fc5cbb7b8635d56eb335fed11d1499e2552 (diff)
downloadgem5-7a0d5aafe4b845a2d1cff6210d7c6ee66e8aba61.tar.xz
ruby: message buffers: significant changes
This patch is the final patch in a series of patches. The aim of the series is to make ruby more configurable than it was. More specifically, the connections between controllers are not at all possible (unless one is ready to make significant changes to the coherence protocol). Moreover the buffers themselves are magically connected to the network inside the slicc code. These connections are not part of the configuration file. This patch makes changes so that these connections will now be made in the python configuration files associated with the protocols. This requires each state machine to expose the message buffers it uses for input and output. So, the patch makes these buffers configurable members of the machines. The patch drops the slicc code that usd to connect these buffers to the network. Now these buffers are exposed to the python configuration system as Master and Slave ports. In the configuration files, any master port can be connected any slave port. The file pyobject.cc has been modified to take care of allocating the actual message buffer. This is inline with how other port connections work.
Diffstat (limited to 'configs/ruby/MOESI_CMP_directory.py')
-rw-r--r--configs/ruby/MOESI_CMP_directory.py29
1 files changed, 26 insertions, 3 deletions
diff --git a/configs/ruby/MOESI_CMP_directory.py b/configs/ruby/MOESI_CMP_directory.py
index aa474209f..d390efa0d 100644
--- a/configs/ruby/MOESI_CMP_directory.py
+++ b/configs/ruby/MOESI_CMP_directory.py
@@ -104,12 +104,17 @@ def create_system(options, system, dma_ports, ruby_system):
l1_cntrl.sequencer = cpu_seq
exec("ruby_system.l1_cntrl%d = l1_cntrl" % i)
- #
# Add controllers and sequencers to the appropriate lists
- #
cpu_sequencers.append(cpu_seq)
l1_cntrl_nodes.append(l1_cntrl)
+ # Connect the L1 controllers and the network
+ l1_cntrl.requestFromL1Cache = ruby_system.network.slave
+ l1_cntrl.responseFromL1Cache = ruby_system.network.slave
+ l1_cntrl.requestToL1Cache = ruby_system.network.master
+ l1_cntrl.responseToL1Cache = ruby_system.network.master
+
+
l2_index_start = block_size_bits + l2_bits
for i in xrange(options.num_l2caches):
@@ -128,10 +133,21 @@ def create_system(options, system, dma_ports, ruby_system):
exec("ruby_system.l2_cntrl%d = l2_cntrl" % i)
l2_cntrl_nodes.append(l2_cntrl)
+ # Connect the L2 controllers and the network
+ l2_cntrl.GlobalRequestFromL2Cache = ruby_system.network.slave
+ l2_cntrl.L1RequestFromL2Cache = ruby_system.network.slave
+ l2_cntrl.responseFromL2Cache = ruby_system.network.slave
+
+ l2_cntrl.GlobalRequestToL2Cache = ruby_system.network.master
+ l2_cntrl.L1RequestToL2Cache = ruby_system.network.master
+ l2_cntrl.responseToL2Cache = ruby_system.network.master
+
+
phys_mem_size = sum(map(lambda r: r.size(), system.mem_ranges))
assert(phys_mem_size % options.num_dirs == 0)
mem_module_size = phys_mem_size / options.num_dirs
+
# Run each of the ruby memory controllers at a ratio of the frequency of
# the ruby system.
# clk_divider value is a fix to pass regression.
@@ -164,6 +180,13 @@ def create_system(options, system, dma_ports, ruby_system):
exec("ruby_system.dir_cntrl%d = dir_cntrl" % i)
dir_cntrl_nodes.append(dir_cntrl)
+ # Connect the directory controllers and the network
+ dir_cntrl.requestToDir = ruby_system.network.master
+ dir_cntrl.responseToDir = ruby_system.network.master
+ dir_cntrl.responseFromDir = ruby_system.network.slave
+ dir_cntrl.forwardFromDir = ruby_system.network.slave
+
+
for i, dma_port in enumerate(dma_ports):
#
# Create the Ruby objects associated with the dma controller
@@ -180,11 +203,11 @@ def create_system(options, system, dma_ports, ruby_system):
exec("ruby_system.dma_cntrl%d.dma_sequencer.slave = dma_port" % i)
dma_cntrl_nodes.append(dma_cntrl)
+
all_cntrls = l1_cntrl_nodes + \
l2_cntrl_nodes + \
dir_cntrl_nodes + \
dma_cntrl_nodes
topology = create_topology(all_cntrls, options)
-
return (cpu_sequencers, dir_cntrl_nodes, topology)