garnet: separate data and ctrl VCs

Separate data VCs and ctrl VCs in garnet, as ctrl VCs have 1 buffer per VC,
while data VCs have > 1 buffers per VC. This is for correct power estimations.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/mem/ruby/network/garnet/fixed-pipeline/OutVcState_d.hh b/src/mem/ruby/network/garnet/fixed-pipeline/OutVcState_d.hh
index f3fb4384a..39b2cb5fe 100644
--- a/src/mem/ruby/network/garnet/fixed-pipeline/OutVcState_d.hh
+++ b/src/mem/ruby/network/garnet/fixed-pipeline/OutVcState_d.hh
@@ -42,6 +42,16 @@ class OutVcState_d
     int get_inport()                { return m_in_port; }
     int get_invc()                  { return m_in_vc; }
     int get_credit_count()          { return m_credit_count; }
+    void
+    set_credit_count()
+    {
+        // only need to initialize credit count for data VCs
+        // constructor sets this to BuffersPerCtrlVC by default
+
+        if (m_network_ptr->get_vnet_type(m_id) == DATA_VNET_)
+            m_credit_count = m_network_ptr->getBuffersPerDataVC();
+    }
+
     void set_inport(int port)       { m_in_port = port; }
     void set_invc(int vc)           { m_in_vc = vc; }
     inline bool