Changeset 597 for trunk/modules/vci_mem_cache

Timestamp:

Dec 11, 2013, 4:50:35 PM (11 years ago)

Author:

cfuguet

Message:

Modifications in vci_mem_cache:

• Bugfix in req_distance function used to compute manhattan distance between requests coordinates and self global coordinates.

• New constructor parameters for vci_mem_cache:
  1. x_self : X self coordinate
  2. y_self : Y self coordinate

This parameter are used for instrumentation

• Remove cc_global_id constructor parameter:

This parameter was the mem_cache coherence srcid. This srcid is not
used by the L1 caches because they take the mem cache global id from
the msb of nline to invalidate (CLEANUP) or to update (MULTIACK)

As the constructor parameters has been changed, the platform using the
mem cache must be changed accordingly. Therefore, the tsar_generic_xbar and
the tsar_generic_iob platforms were updated.

Location:

trunk/modules/vci_mem_cache/caba/source

Files:

• include/vci_mem_cache.h (modified) (2 diffs)
• src/vci_mem_cache.cpp (modified) (8 diffs)

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

@@ -499 +499 @@
           const soclib::common::IntTab       &srcid_x,        // global index RAM network
           const soclib::common::IntTab       &tgtid_d,        // global index INT network
-          const size_t                       cc_global_id,    // global index CC network
+          const size_t                       x_self,          // self X coordinate
+          const size_t                       y_self,          // self Y coordinate
           const size_t                       x_width,         // X width in platform
           const size_t                       y_width,         // Y width in platform
@@ -542 +543 @@
       const size_t                       m_sets;             // Number of cache sets
       const size_t                       m_words;            // Number of words in a line
-      const size_t                       m_cc_global_id;     // global_index on cc network
-      const size_t                       m_xwidth;           // number of x bits in platform
-      const size_t                       m_ywidth;           // number of y bits in platform
+      const size_t                       m_x_self;           // X self coordinate
+      const size_t                       m_y_self;           // Y self coordinate
+      const size_t                       m_x_width;          // number of x bits in platform
+      const size_t                       m_y_width;          // number of y bits in platform
       size_t                             m_debug_start_cycle;
       bool                               m_debug_ok;

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

@@ -334 +334 @@
             const IntTab        &srcid_x,          // global index on external network
             const IntTab        &tgtid_d,          // global index on direct network
-            const size_t        cc_global_id,      // global index on cc network
+            const size_t        x_self,            // self x coordinate
+            const size_t        y_self,            // self y coordinate
             const size_t        x_width,           // number of x bits in platform
             const size_t        y_width,           // number of x bits in platform
@@ -366 +367 @@
         m_sets(nsets),
         m_words(nwords),
-        m_cc_global_id(cc_global_id),
-        m_xwidth(x_width),
-        m_ywidth(y_width),
+        m_x_self(x_self),
+        m_y_self(y_self),
+        m_x_width(x_width),
+        m_y_width(y_width),
         m_debug_start_cycle(debug_start_cycle),
         m_debug_ok(debug_ok),
@@ -644 +646 @@
     {
         const uint32_t srcid_width = vci_param_int::S;
-        uint8_t self_x_srcid = m_cc_global_id >> (srcid_width - m_xwidth);
-        uint8_t self_y_srcid = (m_cc_global_id >> (srcid_width - m_ywidth)) & ((1 << m_xwidth) - 1);
-
-        uint8_t x_srcid = req_srcid >> (srcid_width - m_xwidth);
-        uint8_t y_srcid = (req_srcid >> (srcid_width - m_ywidth - m_xwidth)) & ((1 << m_xwidth) - 1);
-        return abs(self_x_srcid - x_srcid) + abs(self_y_srcid - y_srcid);
+
+        uint8_t req_x = (req_srcid >> (srcid_width - m_x_width));
+        uint8_t req_y = (req_srcid >> (srcid_width - m_x_width - m_y_width)) & ((1 << m_y_width) - 1);
+
+        return abs(m_x_self - req_x) + abs(m_y_self - req_y);
     }
 
@@ -8460 +8461 @@
 
                     DspinDhccpParam::dspin_set( flit,
-                            m_cc_global_id,
-                            DspinDhccpParam::MULTI_INVAL_SRCID);
-
-                    DspinDhccpParam::dspin_set( flit,
                             r_config_to_cc_send_trdid.read(),
                             DspinDhccpParam::MULTI_INVAL_UPDT_INDEX);
@@ -8510 +8507 @@
 
                     DspinDhccpParam::dspin_set( flit,
-                            m_cc_global_id,
-                            DspinDhccpParam::MULTI_INVAL_SRCID);
-
-                    DspinDhccpParam::dspin_set( flit,
                             r_xram_rsp_to_cc_send_trdid.read(),
                             DspinDhccpParam::MULTI_INVAL_UPDT_INDEX);
@@ -8550 +8543 @@
                             m_broadcast_boundaries,
                             DspinDhccpParam::BROADCAST_BOX);
-
-                    DspinDhccpParam::dspin_set( flit,
-                            m_cc_global_id,
-                            DspinDhccpParam::BROADCAST_SRCID);
 
                     DspinDhccpParam::dspin_set( flit,
@@ -8637 +8626 @@
                     DspinDhccpParam::dspin_set(
                             flit,
-                            m_cc_global_id,
-                            DspinDhccpParam::MULTI_UPDT_SRCID);
-
-                    DspinDhccpParam::dspin_set(
-                            flit,
                             r_write_to_cc_send_trdid.read(),
                             DspinDhccpParam::MULTI_UPDT_UPDT_INDEX);
@@ -8727 +8711 @@
                             dest,
                             DspinDhccpParam::MULTI_UPDT_DEST);
-
-                    DspinDhccpParam::dspin_set(
-                            flit,
-                            m_cc_global_id,
-                            DspinDhccpParam::MULTI_UPDT_SRCID);
 
                     DspinDhccpParam::dspin_set(