Changeset 488

Timestamp:

Aug 8, 2013, 4:17:35 PM (11 years ago)

Author:

haoliu

Message:

Optimization in the vci_cc_vcache_wrapper component:

In the icache and dcache fsm,
the cleanup request and the clack request can be handled in the same cycle
in the state miss_wait and miss_updt_dir.

File:

• trunk/modules/vci_cc_vcache_wrapper/caba/source/src/vci_cc_vcache_wrapper.cpp (modified) (8 diffs)

trunk/modules/vci_cc_vcache_wrapper/caba/source/src/vci_cc_vcache_wrapper.cpp

@@ -1634 +1634 @@
         if (m_ireq.valid) m_cost_ins_miss_frz++;
 
-        // coherence clack interrupt
-        if ( r_icache_clack_req.read() )
-        {
-            r_icache_fsm = ICACHE_CC_CHECK;
-            r_icache_fsm_save = r_icache_fsm.read();
-            break;
-        }
-        
         // send cleanup victim request
         if ( r_icache_cleanup_victim_req.read() and not r_icache_cc_send_req.read() )
@@ -1652 +1644 @@
         }   
 
+        // coherence clack interrupt
+        if ( r_icache_clack_req.read() )
+        {
+            r_icache_fsm = ICACHE_CC_CHECK;
+            r_icache_fsm_save = r_icache_fsm.read();
+            break;
+        }
+        
         // coherence interrupt
         if ( r_cc_receive_icache_req.read() and not r_icache_cc_send_req.read() and not r_icache_cleanup_victim_req.read() )
@@ -1723 +1723 @@
         if ( m_ireq.valid ) m_cost_ins_miss_frz++;
 
-        // coherence clack interrupt
-        if ( r_icache_clack_req.read() )
-        {
-            r_icache_fsm = ICACHE_CC_CHECK;
-            r_icache_fsm_save = r_icache_fsm.read();
-            break;
-        }
-
         // send cleanup victim request
         if ( r_icache_cleanup_victim_req.read() and not r_icache_cc_send_req.read() )
@@ -1740 +1732 @@
             r_icache_cleanup_victim_req = false;
         }   
+
+        // coherence clack interrupt
+        if ( r_icache_clack_req.read() )
+        {
+            r_icache_fsm = ICACHE_CC_CHECK;
+            r_icache_fsm_save = r_icache_fsm.read();
+            break;
+        }
 
         // coherence interrupt
@@ -4151 +4151 @@
         if ( m_dreq.valid) m_cost_data_miss_frz++;
 
-        // coherence clack request (from DSPIN CLACK)
-        if ( r_dcache_clack_req.read() )
-        {
-            r_dcache_fsm = DCACHE_CC_CHECK;
-            r_dcache_fsm_cc_save = r_dcache_fsm.read();
-            break;
-        }
-
         // send cleanup victim request
         if ( r_dcache_cleanup_victim_req.read() and not r_dcache_cc_send_req.read() )
@@ -4168 +4160 @@
             r_dcache_cleanup_victim_req = false;
         }   
+
+        // coherence clack request (from DSPIN CLACK)
+        if ( r_dcache_clack_req.read() )
+        {
+            r_dcache_fsm = DCACHE_CC_CHECK;
+            r_dcache_fsm_cc_save = r_dcache_fsm.read();
+            break;
+        }
 
         // coherence request (from CC_RECEIVE FSM)
@@ -4284 +4284 @@
         if ( m_dreq.valid) m_cost_data_miss_frz++;
 
-        // coherence clack request (from DSPIN CLACK)
-        if ( r_dcache_clack_req.read() )
-        {
-            r_dcache_fsm = DCACHE_CC_CHECK;
-            r_dcache_fsm_cc_save = r_dcache_fsm.read();
-            break;
-        }
-
         // send cleanup victim request
         if ( r_dcache_cleanup_victim_req.read() and not r_dcache_cc_send_req.read() )
@@ -4301 +4293 @@
             r_dcache_cleanup_victim_req = false;
         }   
+
+        // coherence clack request (from DSPIN CLACK)
+        if ( r_dcache_clack_req.read() )
+        {
+            r_dcache_fsm = DCACHE_CC_CHECK;
+            r_dcache_fsm_cc_save = r_dcache_fsm.read();
+            break;
+        }
 
         // coherence request (from CC_RECEIVE FSM)