Changeset 430 for trunk/modules/vci_mem_cache/caba/source/include/vci_mem_cache.h

Timestamp:

Jul 1, 2013, 4:20:05 PM (11 years ago)

Author:

cfuguet

Message:

Modifications in vci_mem_cache:

• Adding error treatment for segmentation violation in memory cache. The assert was replaced by a VCI error response to the faulty commmand initiator.

To do so, a communication buffer have been introduced between the
TGT_CMD FSM and the TGT_RSP FSM. The TGT_CMD FSM makes the
segmentation violation verification and if one is detected, the
TGT_CMD FSM makes a request to the TGT_RSP FSM.

File:

• trunk/modules/vci_mem_cache/caba/source/include/vci_mem_cache.h (modified) (4 diffs)

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

@@ -79 +79 @@
       enum tgt_cmd_fsm_state_e{
         TGT_CMD_IDLE,
+        TGT_CMD_ERROR,
         TGT_CMD_READ,
         TGT_CMD_WRITE,
@@ -87 +88 @@
       enum tgt_rsp_fsm_state_e
       {
+        TGT_RSP_TGT_CMD_IDLE,
         TGT_RSP_READ_IDLE,
         TGT_RSP_WRITE_IDLE,
         TGT_RSP_CAS_IDLE,
         TGT_RSP_XRAM_IDLE,
-        TGT_RSP_INIT_IDLE,
+        TGT_RSP_MULTI_ACK_IDLE,
         TGT_RSP_CLEANUP_IDLE,
+        TGT_RSP_TGT_CMD,
         TGT_RSP_READ,
         TGT_RSP_WRITE,
         TGT_RSP_CAS,
         TGT_RSP_XRAM,
-        TGT_RSP_INIT,
+        TGT_RSP_MULTI_ACK,
         TGT_RSP_CLEANUP
       };
@@ -473 +476 @@
       //////////////////////////////////////////////////
 
+      sc_signal<int>         r_tgt_cmd_fsm;
+
       // Fifo between TGT_CMD fsm and READ fsm
       GenericFifo<addr_t>    m_cmd_read_addr_fifo;
@@ -503 +508 @@
       GenericFifo<uint64_t>  m_cc_receive_to_multi_ack_fifo;
 
-      sc_signal<int>         r_tgt_cmd_fsm;
+      // Buffer between TGT_CMD fsm and TGT_RSP fsm
+      // (segmentation violation response request)
+      sc_signal<bool>     r_tgt_cmd_to_tgt_rsp_req;
+      sc_signal<size_t>   r_tgt_cmd_to_tgt_rsp_srcid;
+      sc_signal<size_t>   r_tgt_cmd_to_tgt_rsp_trdid;
+      sc_signal<size_t>   r_tgt_cmd_to_tgt_rsp_pktid;
 
       ///////////////////////////////////////////////////////