From: Nilay Vaish <nilay@cs.wisc.edu>
Date: Mon, 23 Jan 2012 17:07:11 +0000 (-0600)
Subject: MemCmd: Add a command for invalidation requests to LSQ
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9481d05b8aea0faf336f604f3e18b451d5197c12;p=gem5.git

MemCmd: Add a command for invalidation requests to LSQ
This command will be sent from the memory system (Ruby) to the LSQ of
an O3 CPU so that the LSQ, if it needs to, invalidates the address in
the request packet.
---

diff --git a/src/mem/packet.cc b/src/mem/packet.cc
index 64f4fcd14..4c3a785dc 100644
--- a/src/mem/packet.cc
+++ b/src/mem/packet.cc
@@ -168,6 +168,9 @@ MemCmd::commandInfo[] =
     { SET2(IsRequest, IsPrint), InvalidCmd, "PrintReq" },
     /* Flush Request */
     { SET3(IsRequest, IsFlush, NeedsExclusive), InvalidCmd, "FlushReq" },
+    /* Invalidation Request */
+    { SET3(NeedsExclusive, IsInvalidate, IsRequest),
+      InvalidCmd, "InvalidationReq" },
 };
 
 bool
diff --git a/src/mem/packet.hh b/src/mem/packet.hh
index 6347c21ea..e49ce7577 100644
--- a/src/mem/packet.hh
+++ b/src/mem/packet.hh
@@ -108,6 +108,7 @@ class MemCmd
         // Fake simulator-only commands
         PrintReq,       // Print state matching address
         FlushReq,      //request for a cache flush
+        InvalidationReq,   // request for address to be invalidated from lsq
         NUM_MEM_CMDS
     };