Changeset 138 for trunk/modules/vci_mem_cache_v4/caba/source/include

Timestamp:

Feb 18, 2011, 11:10:07 AM (14 years ago)

Author:

guthmull

Message:

Handle bad accesses cleanly : transmit all accesses to the xram and handle rerror in responses. The simulation is no more stopped and gdb can be used for debug.

Location:

trunk/modules/vci_mem_cache_v4/caba/source/include

Files:

• vci_mem_cache_v4.h (modified) (3 diffs)
• xram_transaction_v4.h (modified) (7 diffs)

trunk/modules/vci_mem_cache_v4/caba/source/include/vci_mem_cache_v4.h

@@ -189 +189 @@
         XRAM_RSP_HEAP_ERASE,
         XRAM_RSP_HEAP_LAST,
+        XRAM_RSP_ERROR_ERASE,
+        XRAM_RSP_ERROR_RSP,
       };
 
@@ -393 +395 @@
       sc_signal<int>         r_tgt_cmd_fsm;
 
-      sc_signal<size_t>      r_index;
       size_t nseg;
       size_t ncseg;
@@ -634 +635 @@
       sc_signal<size_t>    r_xram_rsp_to_tgt_rsp_word;  // first word index
       sc_signal<size_t>    r_xram_rsp_to_tgt_rsp_length;// length of the response
+      sc_signal<bool>      r_xram_rsp_to_tgt_rsp_rerror;// send error to requester
 
       // Buffer between XRAM_RSP fsm and INIT_CMD fsm (Inval L1 Caches) 

trunk/modules/vci_mem_cache_v4/caba/source/include/xram_transaction_v4.h

@@ -31 +31 @@
   std::vector<data_t> wdata;        // write buffer (one cache line)
   std::vector<be_t>   wdata_be;         // be for each data in the write buffer
+  bool            rerror;           // error returned by xram
 
   /////////////////////////////////////////////////////////////////////
@@ -72 +73 @@
     word_index  = source.word_index;
     wdata_be.assign(source.wdata_be.begin(),source.wdata_be.end());
-    wdata.assign(source.wdata.begin(),source.wdata.end());      
+    wdata.assign(source.wdata.begin(),source.wdata.end());
+    rerror      = source.rerror;
   }
 
@@ -95 +97 @@
     }
     std::cout << std::endl;
+    std::cout << "rerror      = " << rerror       << std::endl;
   }
 
@@ -106 +109 @@
       wdata.clear();
       valid=false;
+      rerror=false;
     }
 
@@ -120 +124 @@
     wdata_be.assign(source.wdata_be.begin(),source.wdata_be.end());
     wdata.assign(source.wdata.begin(),source.wdata.end());      
+    rerror      = source.rerror;
   }
 
@@ -363 +368 @@
   /////////////////////////////////////////////////////////////////////
   void write_rsp(const size_t index,
-                 const size_t word,
-                 const data_t data)
+                 const size_t word,
+                 const data_t data,
+                 const bool   rerror)
   {
     assert( (index < size_tab) 
@@ -377 +383 @@
     data_t mask = be_to_mask(tab[index].wdata_be[word]);
     tab[index].wdata[word] = (tab[index].wdata[word] & mask) | (data & ~mask);
+    tab[index].rerror |= rerror;
   }