PRD: resume background scrub at runtime

Change-Id: Iaab3339de860215349fdae815496097c03413563
RTC: 171875
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/38714
Reviewed-by: Caleb N. Palmer <cnpalmer@us.ibm.com>
Reviewed-by: Benjamin J. Weisenbeck <bweisenb@us.ibm.com>
Reviewed-by: Brian J. Stegmiller <bjs@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Zane C. Shelley <zshelle@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/39001
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/usr/diag/prdf/plat/mem/prdfMemScrubUtils.C b/src/usr/diag/prdf/plat/mem/prdfMemScrubUtils.C
index ef429cfa8..7943e4d5b 100644
--- a/src/usr/diag/prdf/plat/mem/prdfMemScrubUtils.C
+++ b/src/usr/diag/prdf/plat/mem/prdfMemScrubUtils.C
@@ -376,5 +376,95 @@ uint32_t checkEccFirs<TYPE_MBA>( ExtensibleChip * i_chip,
 
 //------------------------------------------------------------------------------
 
+template<>
+uint32_t isBgScrubConfig<TYPE_MCBIST>( ExtensibleChip * i_chip,
+                                       bool & o_isBgScrub )
+{
+    #define PRDF_FUNC "[isBgScrubConfig] "
+
+    PRDF_ASSERT( nullptr != i_chip );
+    PRDF_ASSERT( TYPE_MCBIST == i_chip->getType() );
+
+    uint32_t o_rc = SUCCESS;
+
+    o_isBgScrub = false;
+
+    do
+    {
+        // There really is not a good way of doing this. A scrub command is a
+        // scrub command the only difference is the speed. Unfortunately, that
+        // speed can change depending on how the hardware team tunes it. For
+        // now, we can use the stop conditions, which should be unique for
+        // background scrub, to determine if it has been configured.
+
+        SCAN_COMM_REGISTER_CLASS * reg = i_chip->getRegister( "MBSTR" );
+        o_rc = reg->Read();
+        if ( SUCCESS != o_rc )
+        {
+            PRDF_ERR( PRDF_FUNC "Read() failed on MBSTR: i_chip=0x%08x",
+                      i_chip->getHuid() );
+            break;
+        }
+
+        if ( 0xf != reg->GetBitFieldJustified(0,4) && // NCE int TH
+             0xf != reg->GetBitFieldJustified(4,4) && // NCE soft TH
+             0xf != reg->GetBitFieldJustified(8,4) && // NCE hard TH
+             reg->IsBitSet(34)                     && // pause on MPE
+             reg->IsBitSet(35)                     )  // pause on UE
+        {
+            o_isBgScrub = true;
+        }
+
+    } while(0);
+
+    return o_rc;
+
+    #undef PRDF_FUNC
+}
+
+template<>
+uint32_t isBgScrubConfig<TYPE_MCA>( ExtensibleChip * i_chip,
+                                    bool & o_isBgScrub )
+{
+    PRDF_ASSERT( nullptr != i_chip );
+    PRDF_ASSERT( TYPE_MCA == i_chip->getType() );
+
+    ExtensibleChip * mcbChip = getConnectedParent( i_chip, TYPE_MCBIST );
+
+    return isBgScrubConfig<TYPE_MCBIST>( mcbChip, o_isBgScrub );
+}
+
+template<>
+uint32_t isBgScrubConfig<TYPE_MBA>( ExtensibleChip * i_chip,
+                                    bool & o_isBgScrub )
+{
+    #define PRDF_FUNC "[isBgScrubConfig] "
+
+    PRDF_ASSERT( nullptr != i_chip );
+    PRDF_ASSERT( TYPE_MBA == i_chip->getType() );
+
+    uint32_t o_rc = SUCCESS;
+
+    o_isBgScrub = false;
+
+    do
+    {
+        // There really is not a good way of doing this. A scrub command is a
+        // scrub command the only difference is the speed. Unfortunately, that
+        // speed can change depending on how the hardware team tunes it. For
+        // now, we can use the stop conditions, which should be unique for
+        // background scrub, to determine if it has been configured.
+
+        // TODO RTC 157888
+
+    } while(0);
+
+    return o_rc;
+
+    #undef PRDF_FUNC
+}
+
+//------------------------------------------------------------------------------
+
 } // end namespace PRDF