ruby: Add support for address ranges in the directory

Previously the directory covered a flat address range that always
started from address 0. This change adds a vector of address ranges
with interleaving and hashing that each directory keeps track of and
the necessary flexibility to support systems with non continuous
memory ranges.

Change-Id: I6ea1c629bdf4c5137b7d9c89dbaf6c826adfd977
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/2903
Reviewed-by: Bradford Beckmann <brad.beckmann@amd.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/mem/protocol/MI_example-dma.sm b/src/mem/protocol/MI_example-dma.sm
index aebdce81c..85d0b7f7d 100644
--- a/src/mem/protocol/MI_example-dma.sm
+++ b/src/mem/protocol/MI_example-dma.sm
@@ -69,6 +69,7 @@ machine(MachineType:DMA, "DMA Controller")
   TBETable TBEs, template="<DMA_TBE>", constructor="m_number_of_TBEs";
 
   Tick clockEdge();
+  MachineID mapAddressToMachine(Addr addr, MachineType mtype);
 
   State getState(TBE tbe, Addr addr) {
     if (is_valid(tbe)) {
@@ -138,7 +139,7 @@ machine(MachineType:DMA, "DMA Controller")
         out_msg.Requestor := machineID;
         out_msg.DataBlk := in_msg.DataBlk;
         out_msg.Len := in_msg.Len;
-        out_msg.Destination.add(map_Address_to_Directory(address));
+        out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
         out_msg.MessageSize := MessageSizeType:Writeback_Control;
       }
     }
@@ -153,7 +154,7 @@ machine(MachineType:DMA, "DMA Controller")
           out_msg.Requestor := machineID;
           out_msg.DataBlk := in_msg.DataBlk;
           out_msg.Len := in_msg.Len;
-          out_msg.Destination.add(map_Address_to_Directory(address));
+          out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
           out_msg.MessageSize := MessageSizeType:Writeback_Control;
         }
       }