Apply multicast offline workaround to hbrt path under opal

Multicast operations to non-pcbslave registers will return a
piberr of 'chiplet offline' if any chiplets (e.g. cores) are
offline.  To handle this we already ignore this scenario during
IPL.  This change adds some decode logic to convert opal
return codes into their equivalent piberr values.  With this
logic the workaround should trigger and avoid scom errors.

Resolves open-power/boston-openpower/#463

RTC: 86782
Change-Id: I5f587ff9bd1db08e3a5ad5131f8053e8495f45a2
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/45526
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Corey V. Swenson <cswenson@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 54 insertions, 7 deletions

diff --git a/src/usr/xscom/runtime/rt_xscom.C b/src/usr/xscom/runtime/rt_xscom.C
index 185185d46..64e0192f2 100644
--- a/src/usr/xscom/runtime/rt_xscom.C
+++ b/src/usr/xscom/runtime/rt_xscom.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2013,2016                        */
+/* Contributors Listed Below - COPYRIGHT 2013,2017                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -35,6 +35,7 @@
 #include <runtime/interface.h>
 #include <errl/errludtarget.H>
 #include <runtime/rt_targeting.H>
+#include <xscom/piberror.H>
 
 // Trace definition
 trace_desc_t* g_trac_xscom = NULL;
@@ -211,12 +212,58 @@ errlHndl_t  xScomDoOp(DeviceFW::OperationType i_ioType,
                                             rc,
                                             i_scomAddr);
 
-            // TODO - RTC 86782 need to know what kind of errors Sapphire can
-            // return - could effect callout.
-            l_err->addHwCallout(i_target,
-                                HWAS::SRCI_PRIORITY_LOW,
-                                HWAS::NO_DECONFIG,
-                                HWAS::GARD_NULL);
+            // translate the rc into a pib error when possible
+            uint32_t l_piberr = PIB::PIB_NO_ERROR;
+
+            if( TARGETING::is_sapphire_load() )
+            {
+                // values taken from opal-api.h
+                switch( rc )
+                {
+                    case(-12 /*OPAL_XSCOM_BUSY*/):
+                        l_piberr = PIB::PIB_RESOURCE_OCCUPIED;
+                        break;
+                    case(-14 /*OPAL_XSCOM_CHIPLET_OFF*/):
+                        l_piberr = PIB::PIB_CHIPLET_OFFLINE;
+                        break;
+                    case(-25 /*OPAL_XSCOM_PARTIAL_GOOD*/):
+                        l_piberr = PIB::PIB_PARTIAL_GOOD;
+                        break;
+                    case(-26 /*OPAL_XSCOM_ADDR_ERROR*/):
+                        l_piberr = PIB::PIB_INVALID_ADDRESS;
+                        break;
+                    case(-27 /*OPAL_XSCOM_CLOCK_ERROR*/):
+                        l_piberr = PIB::PIB_CLOCK_ERROR;
+                        break;
+                    case(-28 /*OPAL_XSCOM_PARITY_ERROR*/):
+                        l_piberr = PIB::PIB_PARITY_ERROR;
+                        break;
+                    case(-29 /*OPAL_XSCOM_TIMEOUT*/):
+                        l_piberr = PIB::PIB_TIMEOUT;
+                        break;
+                }
+            }
+            else if( TARGETING::is_phyp_load() )
+            {
+                //@todo-RTC:86782-Add PHYP support
+                // default to OFFLINE for now to trigger
+                // the multicast workaround in scom.C
+                l_piberr = PIB::PIB_CHIPLET_OFFLINE;
+            }
+            else
+            {
+                // our testcases respond back with the
+                //  pib error directly
+                if( rc > 0 )
+                {
+                    l_piberr = rc;
+                }
+            }
+
+            PIB::addFruCallouts(i_target,
+                                l_piberr,
+                                i_scomAddr,
+                                l_err);
 
             // Note: no trace buffer available at runtime
         }