ruby: change router pipeline stages to 2

This patch changes the router pipeline stages from 4 to 2. The
canonical 4-stage router is conservative while a lower-latency router
with look ahead routing and speculative allocation is well acknowledged.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/mem/ruby/network/garnet/fixed-pipeline/Router_d.cc b/src/mem/ruby/network/garnet/fixed-pipeline/Router_d.cc
index 126cf79e6..97bc1abdd 100644
--- a/src/mem/ruby/network/garnet/fixed-pipeline/Router_d.cc
+++ b/src/mem/ruby/network/garnet/fixed-pipeline/Router_d.cc
@@ -131,6 +131,18 @@ Router_d::swarb_req()
 }
 
 void
+Router_d::call_sw_alloc()
+{
+    m_sw_alloc->wakeup();
+}
+
+void
+Router_d::call_switch()
+{
+    m_switch->wakeup();
+}
+
+void
 Router_d::update_incredit(int in_port, int in_vc, int credit)
 {
     m_input_unit[in_port]->update_credit(in_vc, credit);