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-rw-r--r--mem/packet.hh12
1 files changed, 10 insertions, 2 deletions
diff --git a/mem/packet.hh b/mem/packet.hh
index 260fc60f7..91e56385d 100644
--- a/mem/packet.hh
+++ b/mem/packet.hh
@@ -54,7 +54,8 @@ enum Command
enum PacketResult
{
Success,
- BadAddress
+ BadAddress,
+ Unknown
};
class SenderState{};
@@ -96,7 +97,11 @@ struct Packet
/** A pointer to the data being transfered. It can be differnt sizes
at each level of the heirarchy so it belongs in the packet,
- not request*/
+ not request.
+ This pointer may be NULL! If it isn't null when received by the producer
+ of data it refers to memory that has not been dynamically allocated.
+ Otherwise the producer should simply allocate dynamic memory to use.
+ */
PacketDataPtr data;
/** Indicates the size of the request. */
@@ -111,6 +116,9 @@ struct Packet
/** The command of the transaction. */
Command cmd;
+ /** The time this request was responded to. Used to calculate latencies. */
+ Tick time;
+
/** The result of the packet transaction. */
PacketResult result;