Allow for fetch to retry access if the sendTiming call fails.

--HG--
extra : convert_revision : ddbcf82e0a3160c93c4e51f5d60b0a7b5983d3ba

1 files changed, 12 insertions, 1 deletions

diff --git a/src/cpu/o3/fetch.hh b/src/cpu/o3/fetch.hh
index 9e8aeb8fb..960d42178 100644
--- a/src/cpu/o3/fetch.hh
+++ b/src/cpu/o3/fetch.hh
@@ -115,7 +115,7 @@ class DefaultFetch
         QuiescePending,
         SwitchOut,
         IcacheWaitResponse,
-        IcacheRetry,
+        IcacheWaitRetry,
         IcacheAccessComplete
     };
 
@@ -268,6 +268,8 @@ class DefaultFetch
     }
 
   private:
+    void recvRetry();
+
     /** Returns the appropriate thread to fetch, given the fetch policy. */
     int getFetchingThread(FetchPriority &fetch_priority);
 
@@ -360,6 +362,15 @@ class DefaultFetch
     /** The width of fetch in instructions. */
     unsigned fetchWidth;
 
+    /** Is the cache blocked?  If so no threads can access it. */
+    bool cacheBlocked;
+
+    /** The packet that is waiting to be retried. */
+    PacketPtr retryPkt;
+
+    /** The thread that is waiting on the cache to tell fetch to retry. */
+    int retryTid;
+
     /** Cache block size. */
     int cacheBlkSize;