STOP: Move Stop 8 code from CME to SGPE for CME space savings

Change-Id: I98d46b4bd4e5271da867e511f91de9accc908929 Original-Change-Id: I8ef3a2bb61d562462a7594275ea219597d7e519c Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/40667 Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com> Reviewed-by: Juan R. Medina <jrmedina@us.ibm.com> Reviewed-by: Brian T. Vanderpool <vanderp@us.ibm.com> Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
open-power · Aug 22, 2018 · e1b9fa3 · e1b9fa3
1 parent a7817cd
commit e1b9fa3
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Showing 2 changed files with 54 additions and 1 deletion.
diff --git a/import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_cme_stop_entry.c b/import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_cme_stop_entry.c
@@ -1146,6 +1146,9 @@ p9_cme_stop_entry()
         PK_TRACE("+++++ +++++ STOP LEVEL 5-7 ENTRY +++++ +++++");
         //----------------------------------------------------------------------
 
+// NDD1 workaround to save cme image size
+#if NIMBUS_DD_LEVEL != 1
+
         if ((G_cme_stop_record.req_level[0] >= STOP_LEVEL_8) &&
             (G_cme_stop_record.req_level[1] >= STOP_LEVEL_8))
         {
@@ -1229,6 +1232,8 @@ p9_cme_stop_entry()
             }
         }
 
+#endif
+
         //=============================
         MARK_TAG(SE_SGPE_HANDOFF, core)
         //=============================

diff --git a/import/chips/p9/procedures/ppe_closed/sgpe/stop_gpe/p9_sgpe_stop_entry.c b/import/chips/p9/procedures/ppe_closed/sgpe/stop_gpe/p9_sgpe_stop_entry.c
@@ -342,6 +342,54 @@ p9_sgpe_stop_entry()
                             scom_data.value);
         }
 
+// NDD1 workaround to save cme image size
+#if NIMBUS_DD_LEVEL == 1
+
+        PK_TRACE("Assert L2+NCU purge and NCU tlbie quiesce via SICR[18,21,22]");
+        // insert tlbie quiesce before ncu purge to avoid window condition
+        // of ncu traffic still happening when purging starts
+        // Note: chtm purge and drop tlbie quiesce will be done in SGPE
+
+        if (ex & FST_EX_IN_QUAD)
+        {
+            GPE_PUTSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_SICR_OR, qloop, 0), (BIT64(18) | BIT64(21)));
+            GPE_PUTSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_SICR_OR, qloop, 0), BIT64(22));
+        }
+
+        if (ex & SND_EX_IN_QUAD)
+        {
+            GPE_PUTSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_SICR_OR, qloop, 1), (BIT64(18) | BIT64(21)));
+            GPE_PUTSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_SICR_OR, qloop, 1), BIT64(22));
+        }
+
+        PK_TRACE("Poll for purged done via EISR[22,23] then Drop L2+NCU purges via SICR[18,22]");
+
+        if (ex & FST_EX_IN_QUAD)
+        {
+            do
+            {
+                GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_EISR, qloop, 0), scom_data.value);
+            }
+            while((scom_data.words.upper & BITS32(22, 2)) != BITS32(22, 2));
+
+            GPE_PUTSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_SICR_CLR, qloop, 0), (BIT64(18) | BIT64(22)));
+        }
+
+        if (ex & SND_EX_IN_QUAD)
+        {
+            do
+            {
+                GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_EISR, qloop, 1), scom_data.value);
+            }
+            while((scom_data.words.upper & BITS32(22, 2)) != BITS32(22, 2));
+
+            GPE_PUTSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_SICR_CLR, qloop, 1), (BIT64(18) | BIT64(22)));
+        }
+
+        PK_TRACE_INF("NDD1: L2 and NCU Purged by SGPE");
+
+#endif
+
         //====================================================
         MARK_TAG(SE_STOP_L2_CLKS, ((ex << 6) | (32 >> qloop)))
         //====================================================
@@ -359,7 +407,7 @@ p9_sgpe_stop_entry()
         PPE_WAIT_CORE_CYCLES(256)
 
         PK_TRACE("Assert partial bad L2/L3 and stopping/stoped l2 pscom masks via RING_FENCE_MASK_LATCH");
-        scom_data.words.lower = 0;
+        scom_data.value = 0;
 
         if (!(G_sgpe_stop_record.group.ex_l[VECTOR_CONFIG] & BIT32(qloop)))
         {