mem: Add close adaptive paging policy to DRAM controller model

This patch adds a second adaptive page policy to the DRAM controller,
closing the page unless there are already queued accesses to the open
page.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/mem/SimpleDRAM.py b/src/mem/SimpleDRAM.py
index a72bd518c..514ff3664 100644
--- a/src/mem/SimpleDRAM.py
+++ b/src/mem/SimpleDRAM.py
@@ -54,8 +54,10 @@ class MemSched(Enum): vals = ['fcfs', 'frfcfs']
 # maximises parallelism.
 class AddrMap(Enum): vals = ['RoRaBaChCo', 'RoRaBaCoCh', 'RoCoRaBaCh']
 
-# Enum for the page policy, either open, open_adaptive or close.
-class PageManage(Enum): vals = ['open', 'open_adaptive', 'close']
+# Enum for the page policy, either open, open_adaptive, close, or
+# close_adaptive.
+class PageManage(Enum): vals = ['open', 'open_adaptive', 'close',
+                                'close_adaptive']
 
 # SimpleDRAM is a single-channel single-ported DRAM controller model
 # that aims to model the most important system-level performance