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, 12 insertions, 11 deletions

diff --git a/src/mem/protocol/MOESI_hammer-cache.sm b/src/mem/protocol/MOESI_hammer-cache.sm
index 9b2e4cab3..9cbd277d4 100644
--- a/src/mem/protocol/MOESI_hammer-cache.sm
+++ b/src/mem/protocol/MOESI_hammer-cache.sm
@@ -188,6 +188,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
   void wakeUpAllBuffers();
   void wakeUpBuffers(Addr a);
   Cycles curCycle();
+  MachineID mapAddressToMachine(Addr addr, MachineType mtype);
 
   Entry getCacheEntry(Addr address), return_by_pointer="yes" {
     Entry L2cache_entry := static_cast(Entry, "pointer", L2cache.lookup(address));
@@ -554,7 +555,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.addr := address;
       out_msg.Type := CoherenceRequestType:GETS;
       out_msg.Requestor := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Request_Control;
       out_msg.InitialRequestTime := curCycle();
 
@@ -569,7 +570,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.addr := address;
       out_msg.Type := CoherenceRequestType:GETX;
       out_msg.Requestor := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Request_Control;
       out_msg.InitialRequestTime := curCycle();
 
@@ -585,7 +586,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
         out_msg.addr := address;
         out_msg.Type := CoherenceRequestType:GETX;
         out_msg.Requestor := machineID;
-        out_msg.Destination.add(map_Address_to_Directory(address));
+        out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
         out_msg.MessageSize := MessageSizeType:Request_Control;
         out_msg.InitialRequestTime := curCycle();
       }
@@ -601,7 +602,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.addr := address;
       out_msg.Type := CoherenceRequestType:GETF;
       out_msg.Requestor := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Request_Control;
       out_msg.InitialRequestTime := curCycle();
 
@@ -661,7 +662,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.addr := address;
       out_msg.Type := CoherenceRequestType:PUT;
       out_msg.Requestor := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Writeback_Control;
     }
   }
@@ -671,7 +672,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.addr := address;
       out_msg.Type := CoherenceRequestType:PUTF;
       out_msg.Requestor := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Writeback_Control;
     }
   }
@@ -826,7 +827,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.addr := address;
       out_msg.Type := CoherenceResponseType:UNBLOCK;
       out_msg.Sender := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Unblock_Control;
     }
   }
@@ -836,7 +837,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.addr := address;
       out_msg.Type := CoherenceResponseType:UNBLOCKM;
       out_msg.Sender := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Unblock_Control;
     }
   }
@@ -848,7 +849,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       out_msg.Type := CoherenceResponseType:UNBLOCKS;
       out_msg.Sender := machineID;
       out_msg.CurOwner := tbe.CurOwner;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.MessageSize := MessageSizeType:Unblock_Control;
     }
   }
@@ -1126,7 +1127,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       assert(is_valid(tbe));
       out_msg.addr := address;
       out_msg.Sender := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.Dirty := tbe.Dirty;
       if (tbe.Dirty) {
         out_msg.Type := CoherenceResponseType:WB_DIRTY;
@@ -1157,7 +1158,7 @@ machine(MachineType:L1Cache, "AMD Hammer-like protocol")
       assert(is_valid(tbe));
       out_msg.addr := address;
       out_msg.Sender := machineID;
-      out_msg.Destination.add(map_Address_to_Directory(address));
+      out_msg.Destination.add(mapAddressToMachine(address, MachineType:Directory));
       out_msg.DataBlk := tbe.DataBlk;
       out_msg.Dirty := tbe.Dirty;
       if (tbe.Dirty) {