PRD: Avoid gard for NVDIMMs

Change-Id: Icaa517b196826c2b442da769ef45b3cdf56e6a9d
CQ: SW467502
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/79189
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Brian J. Stegmiller <bjs@us.ibm.com>
Reviewed-by: Benjamen G. Tyner <ben.tyner@ibm.com>
Reviewed-by: Paul Greenwood <paul.greenwood@ibm.com>
Reviewed-by: Zane C. Shelley <zshelle@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/79670

2 files changed, 51 insertions, 2 deletions

diff --git a/src/usr/diag/prdf/common/framework/service/iipServiceDataCollector.h b/src/usr/diag/prdf/common/framework/service/iipServiceDataCollector.h
index 704dddf70..e8cdb79a5 100755
--- a/src/usr/diag/prdf/common/framework/service/iipServiceDataCollector.h
+++ b/src/usr/diag/prdf/common/framework/service/iipServiceDataCollector.h
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2012,2018                        */
+/* Contributors Listed Below - COPYRIGHT 2012,2019                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -628,6 +628,11 @@ public:
     void clearMruListGard();
 
     /**
+     * @brief Iterates the MRU list and clears gard for any NVDIMM targets.
+     */
+    void clearNvdimmMruListGard();
+
+    /**
      * @brief  Iterates the MRU list and returns true if at least on target in
      *         the list is set to be garded.
      * @return True if there is at least one target set to be garded.
diff --git a/src/usr/diag/prdf/common/framework/service/prdfServiceDataCollector.C b/src/usr/diag/prdf/common/framework/service/prdfServiceDataCollector.C
index d9681d66b..8ba990077 100755
--- a/src/usr/diag/prdf/common/framework/service/prdfServiceDataCollector.C
+++ b/src/usr/diag/prdf/common/framework/service/prdfServiceDataCollector.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2012,2015                        */
+/* Contributors Listed Below - COPYRIGHT 2012,2019                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -177,6 +177,50 @@ void ServiceDataCollector::clearMruListGard()
 
 //------------------------------------------------------------------------------
 
+void ServiceDataCollector::clearNvdimmMruListGard()
+{
+    #define PRDF_FUNC "[ServiceDataCollector::clearNvdimmMruListGard] "
+
+    // Loop through the MRU list.
+    for ( auto & mru : xMruList )
+    {
+        PRDcallout callout = mru.callout;
+        TargetHandle_t trgt = callout.getTarget();
+        if ( TYPE_DIMM == PlatServices::getTargetType(trgt) )
+        {
+            // If the callout target is an NVDIMM, do not gard it and send a
+            // message to PHYP/Hostboot that a save/restore may work.
+            if ( isNVDIMM(trgt) )
+            {
+                mru.gardState = NO_GARD;
+
+                #ifdef __HOSTBOOT_MODULE
+
+                #ifdef __HOSTBOOT_RUNTIME
+                // Hostboot runtime, send the message to PHYP
+                uint32_t l_rc = PlatServices::nvdimmNotifyPhypProtChange( trgt,
+                    NVDIMM::NVDIMM_RISKY_HW_ERROR );
+                if ( SUCCESS != l_rc )
+                {
+                    PRDF_TRAC( PRDF_FUNC "nvdimmNotifyPhypProtChange(0x%08x) "
+                               "failed.", PlatServices::getHuid(trgt) );
+                    continue;
+                }
+                #else
+                // IPL, set the appropriate internal attribute in Hostboot
+                trgt->setAttr<ATTR_NV_STATUS_FLAG>(0x40);
+                #endif
+
+                #endif // __HOSTBOOT_MODULE
+            }
+        }
+    }
+
+    #undef PRDF_FUNC
+}
+
+//------------------------------------------------------------------------------
+
 bool ServiceDataCollector::isGardRequested()
 {
     bool gardRecordExit = false;