Add in HasData, and move the define of NUM_MEM_CMDS to a more visible location.

[gem5.git] / src / mem / packet.hh

diff --git a/src/mem/packet.hh b/src/mem/packet.hh
index c7d28010cb453e3a1c9d2d18ed34d1cd5c16ae5b..e7047b0cda718ddf3fe6186365319588c6fcdfc4 100644 (file)
--- a/src/mem/packet.hh
+++ b/src/mem/packet.hh
@@ -58,10 +58,6 @@ typedef std::list<PacketPtr> PacketList;
 #define NO_ALLOCATE 1 << 5
 #define SNOOP_COMMIT 1 << 6
 
-//For statistics we need max number of commands, hard code it at
-//20 for now.  @todo fix later
-#define NUM_MEM_CMDS 1 << 9
-
 /**
  * A Packet is used to encapsulate a transfer between two objects in
  * the memory system (e.g., the L1 and L2 cache).  (In contrast, a
@@ -164,6 +160,8 @@ class Packet
 
   private:
     /** List of command attributes. */
+    // If you add a new CommandAttribute, make sure to increase NUM_MEM_CMDS
+    // as well.
     enum CommandAttribute
     {
         IsRead         = 1 << 0,
@@ -174,30 +172,38 @@ class Packet
         IsResponse     = 1 << 5,
         NeedsResponse  = 1 << 6,
         IsSWPrefetch    = 1 << 7,
-        IsHWPrefetch    = 1 << 8
+        IsHWPrefetch    = 1 << 8,
+        HasData                = 1 << 9
     };
 
+//For statistics we need max number of commands, hard code it at
+//20 for now.  @todo fix later
+#define NUM_MEM_CMDS 1 << 10
+
   public:
     /** List of all commands associated with a packet. */
     enum Command
     {
         InvalidCmd      = 0,
         ReadReq                = IsRead  | IsRequest | NeedsResponse,
-        WriteReq       = IsWrite | IsRequest | NeedsResponse,
-        WriteReqNoAck  = IsWrite | IsRequest,
-        ReadResp       = IsRead  | IsResponse | NeedsResponse,
+        WriteReq       = IsWrite | IsRequest | NeedsResponse | HasData,
+        WriteReqNoAck  = IsWrite | IsRequest | HasData,
+        ReadResp       = IsRead  | IsResponse | NeedsResponse | HasData,
         WriteResp      = IsWrite | IsResponse | NeedsResponse,
-        Writeback       = IsWrite | IsRequest,
+        Writeback       = IsWrite | IsRequest | HasData,
         SoftPFReq       = IsRead  | IsRequest | IsSWPrefetch | NeedsResponse,
         HardPFReq       = IsRead  | IsRequest | IsHWPrefetch | NeedsResponse,
-        SoftPFResp      = IsRead  | IsResponse | IsSWPrefetch | NeedsResponse,
-        HardPFResp      = IsRead  | IsResponse | IsHWPrefetch | NeedsResponse,
+        SoftPFResp      = IsRead  | IsResponse | IsSWPrefetch
+                                | NeedsResponse | HasData,
+        HardPFResp      = IsRead  | IsResponse | IsHWPrefetch
+                                | NeedsResponse | HasData,
         InvalidateReq   = IsInvalidate | IsRequest,
-        WriteInvalidateReq = IsWrite | IsInvalidate | IsRequest,
+        WriteInvalidateReq = IsWrite | IsInvalidate | IsRequest | HasData,
         UpgradeReq      = IsInvalidate | IsRequest | NeedsResponse,
         UpgradeResp     = IsInvalidate | IsResponse | NeedsResponse,
         ReadExReq       = IsRead | IsInvalidate | IsRequest | NeedsResponse,
-        ReadExResp      = IsRead | IsInvalidate | IsResponse | NeedsResponse
+        ReadExResp      = IsRead | IsInvalidate | IsResponse
+                                | NeedsResponse | HasData
     };
 
     /** Return the string name of the cmd field (for debugging and
@@ -219,6 +225,7 @@ class Packet
     bool isResponse()   { return (cmd & IsResponse) != 0; }
     bool needsResponse() { return (cmd & NeedsResponse) != 0; }
     bool isInvalidate()  { return (cmd & IsInvalidate) != 0; }
+    bool hasData()      { return (cmd & HasData) != 0; }
 
     bool isCacheFill() { return (flags & CACHE_LINE_FILL) != 0; }
     bool isNoAllocate() { return (flags & NO_ALLOCATE) != 0; }