Changeset 535 for trunk/modules/vci_mem_cache/caba/source/include/vci_mem_cache.h

Timestamp:

Sep 26, 2013, 11:43:56 AM (11 years ago)

Author:

cfuguet

Message:

Modification in vci_mem_cache:

• When a BROADCAST INVALIDATE is needed after a WRITE request, the the data from the cache is merged with the new data of the WRITE request.

Before this commit, the DATA from the cache was read in the
WRITE_DIR_LOCK state, but this creates a critical path RAM-to-RAM.
Therefore, this commit changes the state for read the data to
WRITE_BC_DIR_READ and because the synchronous behavior of the
RAMs, the data is available in the WRITE_BC_TRT_LOCK state.

File:

• trunk/modules/vci_mem_cache/caba/source/include/vci_mem_cache.h (modified) (2 diffs)

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

@@ -449 +449 @@
       uint32_t     m_cpt_write_miss;     // Number of MISS WRITE
       uint32_t     m_cpt_write_dirty;    // Cumulated length for WRITE transactions
+      uint32_t     m_cpt_write_broadcast;// Number of BROADCAST INVAL because write
 
       uint32_t     m_cpt_trt_rb;         // Read blocked by a hit in trt
@@ -724 +725 @@
       sc_signal<bool>     r_write_sc_fail;            // sc command failed
       sc_signal<data_t>   r_write_sc_key;             // sc command key
+      sc_signal<bool>     r_write_bc_data_we;         // Write enable for data buffer
 
       // Buffer between WRITE fsm and TGT_RSP fsm (acknowledge a write command from L1)