From: David Hashe <david.hashe@amd.com>
Date: Mon, 20 Jul 2015 14:15:18 +0000 (-0500)
Subject: mem: add request types for acquire and release
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f5f04c312096e56f09ea27e84d3d2d2a97be97f9;p=gem5.git

mem: add request types for acquire and release

Add support for acquire and release requests.  These synchronization operations
are commonly supported by several modern instruction sets.
---

diff --git a/src/mem/request.hh b/src/mem/request.hh
index 287a823ad..ef58686d6 100644
--- a/src/mem/request.hh
+++ b/src/mem/request.hh
@@ -155,6 +155,10 @@ class Request
         PF_EXCLUSIVE                = 0x02000000,
         /** The request should be marked as LRU. */
         EVICT_NEXT                  = 0x04000000,
+        /** The request should be marked with ACQUIRE. */
+        ACQUIRE                     = 0x00020000,
+        /** The request should be marked with RELEASE. */
+        RELEASE                     = 0x00040000,
 
         /**
          * The request should be handled by the generic IPR code (only
@@ -696,6 +700,8 @@ class Request
     bool isMmappedIpr() const { return _flags.isSet(MMAPPED_IPR); }
     bool isSecure() const { return _flags.isSet(SECURE); }
     bool isPTWalk() const { return _flags.isSet(PT_WALK); }
+    bool isAcquire() const { return _flags.isSet(ACQUIRE); }
+    bool isRelease() const { return _flags.isSet(RELEASE); }
 };
 
 #endif // __MEM_REQUEST_HH__