sim: Make the drain state a global typed enum

The drain state enum is currently a part of the Drainable
interface. The same state machine will be used by the DrainManager to
identify the global state of the simulator. Make the drain state a
global typed enum to better cater for this usage scenario.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/mem/cache/mshr_queue.cc b/src/mem/cache/mshr_queue.cc
index f8587e1f1..3736c9f21 100644
--- a/src/mem/cache/mshr_queue.cc
+++ b/src/mem/cache/mshr_queue.cc
@@ -186,7 +186,7 @@ MSHRQueue::deallocateOne(MSHR *mshr)
         DPRINTF(Drain, "MSHRQueue now empty, signalling drained\n");
         drainManager->signalDrainDone();
         drainManager = NULL;
-        setDrainState(Drainable::Drained);
+        setDrainState(DrainState::Drained);
     }
     return retval;
 }
@@ -269,11 +269,11 @@ unsigned int
 MSHRQueue::drain(DrainManager *dm)
 {
     if (allocated == 0) {
-        setDrainState(Drainable::Drained);
+        setDrainState(DrainState::Drained);
         return 0;
     } else {
         drainManager = dm;
-        setDrainState(Drainable::Draining);
+        setDrainState(DrainState::Draining);
         return 1;
     }
 }