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, 25 insertions, 0 deletions

diff --git a/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr.C b/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr.C
index d6d704f13..335838ba7 100644
--- a/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr.C
+++ b/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr.C
@@ -28,6 +28,7 @@
 // Platform includes
 #include <prdfMemAddress.H>
 #include <prdfMemCaptureData.H>
+#include <prdfMemScrubUtils.H>
 #include <prdfP9McbistExtraSig.H>
 #include <prdfParserEnums.H>
 
@@ -101,6 +102,30 @@ uint32_t MemTdCtlr<T>::handleCmdComplete( STEP_CODE_DATA_STRUCT & io_sc )
                 break;
             }
 
+            #ifdef __HOSTBOOT_RUNTIME
+
+            // If the queue is still empty then it is possible that background
+            // scrubbing only stopped for FFDC. In that case, simply resume the
+            // command instead of starting a new one.
+            if ( iv_queue.empty() )
+            {
+                // It is possible to get here if we were running a TD procedure
+                // and the PRD service is reset. Therefore, we much check if
+                // background scrubbing was actually configured.
+                bool isBgScrub;
+                o_rc = isBgScrubConfig<T>( iv_chip, isBgScrub );
+                if ( SUCCESS != o_rc )
+                {
+                    PRDF_ERR( PRDF_FUNC "isBgScrubConfig(0x%08x) failed",
+                              iv_chip->getHuid() );
+                    break;
+                }
+
+                if ( isBgScrub ) iv_resumeBgScrub = true;
+            }
+
+            #endif
+
             // If the command completed successfully with no error, the error
             // log will not have any useful information. Therefore, do not
             // commit the error log. This is done to avoid useless