Handle replacement of block with pending upgrade.

src/mem/cache/tags/lru.cc:
    Add some replacement DPRINTFs

--HG--
extra : convert_revision : 7993ec24d6af7e7774d04ce36f20e3f43f887fd9

1 files changed, 11 insertions, 0 deletions

diff --git a/src/mem/cache/miss/mshr.hh b/src/mem/cache/miss/mshr.hh
index 92288cf52..a9380d99a 100644
--- a/src/mem/cache/miss/mshr.hh
+++ b/src/mem/cache/miss/mshr.hh
@@ -105,12 +105,20 @@ class MSHR : public Packet::SenderState
 
     bool deferredNeedsExclusive;
     bool pendingInvalidate;
+    /** Is there a pending upgrade that got replaced? */
+    bool replacedPendingUpgrade;
+    bool replacedPendingUpgradeDirty;
 
     /** Thread number of the miss. */
     short threadNum;
     /** The number of currently allocated targets. */
     short ntargets;
 
+
+    /** Data buffer (if needed).  Currently used only for pending
+     * upgrade handling. */
+    uint8_t *data;
+
     /**
      * Pointer to this MSHR on the ready list.
      * @sa MissQueue, MSHRQueue::readyList
@@ -204,6 +212,9 @@ public:
 
     bool promoteDeferredTargets();
 
+    void handleReplacement(CacheBlk *blk, int blkSize);
+    bool handleReplacedPendingUpgrade(Packet *pkt);
+
     /**
      * Prints the contents of this MSHR to stderr.
      */