From 92cfd1cac7f6f2d0abf64808f08f063cd0db1263 Mon Sep 17 00:00:00 2001
From: Brad Beckmann <Brad.Beckmann@amd.com>
Date: Sun, 21 Mar 2010 21:22:21 -0700
Subject: ruby: Ruby support for sparse memory

The patch includes direct support for the MI example protocol.
---
 configs/common/Options.py  | 6 +++++-
 configs/ruby/MI_example.py | 4 +++-
 configs/ruby/Ruby.py       | 6 ++++--
 3 files changed, 12 insertions(+), 4 deletions(-)

(limited to 'configs')

diff --git a/configs/common/Options.py b/configs/common/Options.py
index 7d1b0e745..b0153f453 100644
--- a/configs/common/Options.py
+++ b/configs/common/Options.py
@@ -43,7 +43,11 @@ parser.add_option("--mesh-rows", type="int", default=1,
                   help="the number of rows in the mesh topology")
 parser.add_option("--garnet-network", type="string", default=none,
                   help="'fixed'|'flexible'")
-      
+
+# ruby sparse memory options
+parser.add_option("--use-map", action="store_true", default=False)
+parser.add_option("--map-levels", type="int", default=4)
+
 # Run duration options
 parser.add_option("-m", "--maxtick", type="int", default=m5.MaxTick,
                   metavar="T",
diff --git a/configs/ruby/MI_example.py b/configs/ruby/MI_example.py
index 96515971e..f4033caeb 100644
--- a/configs/ruby/MI_example.py
+++ b/configs/ruby/MI_example.py
@@ -105,7 +105,9 @@ def create_system(options, phys_mem, piobus, dma_devices):
         dir_cntrl = Directory_Controller(version = i,
                                          directory = \
                                          RubyDirectoryMemory(version = i,
-                                                             size = dir_size),
+                                               size = dir_size,
+                                               use_map = options.use_map,
+                                               map_levels = options.map_levels),
                                          memBuffer = mem_cntrl)
 
         dir_cntrl_nodes.append(dir_cntrl)
diff --git a/configs/ruby/Ruby.py b/configs/ruby/Ruby.py
index 22d56f9a1..44a160793 100644
--- a/configs/ruby/Ruby.py
+++ b/configs/ruby/Ruby.py
@@ -78,8 +78,10 @@ def create_system(options, physmem, piobus = None, dma_devices = []):
         network = SimpleNetwork(topology = net_topology)
 
     #
-    # determine the total memory size of the ruby system and verify it is equal
-    # to physmem
+    # Determine the total memory size of the ruby system and verify it is equal
+    # to physmem.  However, if Ruby memory is using sparse memory in SE 
+    # mode, then the system should not back-up the memory state with
+    # the Memory Vector and thus the memory size bytes should stay at 0.
     #
     total_mem_size = MemorySize('0B')
     for dir_cntrl in dir_cntrls:
-- 
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