ruby: single physical memory in fs mode

Both ruby and the system used to maintain memory copies.  With the changes
carried for programmed io accesses, only one single memory is required for
fs simulations.  This patch sets the copy of memory that used to reside
with the system to null, so that no space is allocated, but address checks
can still be carried out.  All the memory accesses now source and sink values
to the memory maintained by ruby.

1 files changed, 0 insertions, 5 deletions

diff --git a/src/mem/protocol/MOESI_CMP_token-dma.sm b/src/mem/protocol/MOESI_CMP_token-dma.sm
index 72b0e52a5..1c28971a1 100644
--- a/src/mem/protocol/MOESI_CMP_token-dma.sm
+++ b/src/mem/protocol/MOESI_CMP_token-dma.sm
@@ -51,11 +51,6 @@ machine(DMA, "DMA Controller")
     Ack,          desc="DMA write to memory completed";
   }
 
-  structure(DMASequencer, external="yes") {
-    void ackCallback();
-    void dataCallback(DataBlock);
-  }
-
   MessageBuffer mandatoryQueue, ordered="false";
   State cur_state;