Fix reading EMPATH data from fused odd numbered cores

Change-Id: I1014ed6adf3fc7b22356f907532aa6f88259462c CQ: FW678428 Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/58054 Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com> Reviewed-by: William A. Bryan <wilbryan@us.ibm.com> Reviewed-by: Gregory S. Still <stillgs@us.ibm.com> Reviewed-by: Martha Broyles <mbroyles@us.ibm.com>
open-power · May 3, 2018 · ba4bad1 · ba4bad1
1 parent 8aa6ad0
commit ba4bad1
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Showing 4 changed files with 45 additions and 4 deletions.
diff --git a/src/include/core_data.h b/src/include/core_data.h
@@ -39,6 +39,7 @@
 #define TOD_VALUE_REG           0x00040020
 #define STOP_STATE_HIST_OCC_REG 0x000F0112
 
+#define SELECT_ODD_CORE             0x100
 #define CORE_RAW_CYCLES             0x200
 #define CORE_RUN_CYCLES             0x208
 #define CORE_WORKRATE_BUSY          0x210
@@ -88,6 +89,13 @@
 
 #define WORKAROUND_SCOM_ADDRESS  0x10800
 
+typedef enum
+{
+    FUSED_UNKNOWN,
+    FUSED_FALSE,
+    FUSED_TRUE
+} FusedCore;
+
 typedef struct
 {
     uint32_t tod_2mhz;

diff --git a/src/include/registers/cppm_firmware_registers.h b/src/include/registers/cppm_firmware_registers.h
@@ -61,7 +61,9 @@ typedef union cppm_cpmmr {
 #ifdef _BIG_ENDIAN
     uint64_t ppm_write_disable : 1;
     uint64_t ppm_write_override : 1;
-    uint64_t reserved1 : 10;
+    uint64_t reserved0 : 7;
+    uint64_t fused_core_mode : 1;
+    uint64_t reserved1 : 2;
     uint64_t cme_err_notify_dis : 1;
     uint64_t wkup_notify_select : 1;
     uint64_t enable_pece : 1;
@@ -73,7 +75,9 @@ typedef union cppm_cpmmr {
     uint64_t enable_pece : 1;
     uint64_t wkup_notify_select : 1;
     uint64_t cme_err_notify_dis : 1;
-    uint64_t reserved1 : 10;
+    uint64_t reserved1 : 2;
+    uint64_t fused_core_mode : 1;
+    uint64_t reserved0 : 7;
     uint64_t ppm_write_override : 1;
     uint64_t ppm_write_disable : 1;
 #endif // _BIG_ENDIAN

diff --git a/src/occ_405/occbuildname.c b/src/occ_405/occbuildname.c
@@ -34,6 +34,6 @@ volatile const char G_occ_buildname[16] __attribute__((section(".buildname"))) =
 
 #else
 
-volatile const char G_occ_buildname[16] __attribute__((section(".buildname"))) = /*<BuildName>*/  "op_occ_180425a\0"  /*</BuildName>*/ ;
+volatile const char G_occ_buildname[16] __attribute__((section(".buildname"))) = /*<BuildName>*/  "op_occ_180501a\0"  /*</BuildName>*/ ;
 
 #endif
diff --git a/src/occ_gpe0/core_data.c b/src/occ_gpe0/core_data.c
@@ -32,13 +32,16 @@
 #include "ppe42_msr.h"
 #include "ppe42_scom.h"
 #include "cme_register_addresses.h"
+#include "cppm_register_addresses.h"
+#include "cppm_firmware_registers.h"
 #include "pk.h"
 
 #define CME_VDSR_BASE (CME_SCOM_VDSR & 0x00ffffff)
 
 // Global variables
 uint32_t g_vdm_cache_large_droop_count[MAX_NUM_QUADS]__attribute__((section (".sbss")));
 uint32_t g_vdm_core_small_droop_count[MAX_NUM_CORES]__attribute__((section (".sbss")));
+int g_fused_core = FUSED_UNKNOWN;
 
 uint32_t get_core_data(uint32_t i_core,
                        CoreData* o_data)
@@ -163,7 +166,33 @@ uint32_t get_core_data(uint32_t i_core,
         // Send command to select which emmpath counter to read
         do
         {
-            uint64_t empath_scom_data = CORE_RAW_CYCLES;
+           uint64_t empath_scom_data = CORE_RAW_CYCLES;
+
+           if(FUSED_UNKNOWN == g_fused_core)
+            {
+                cppm_cpmmr_t cpmmr;
+                rc = getscom(coreSelect, CPPM_CPMMR, &(cpmmr.value));
+                if (rc)
+                {
+                    // Retry on next tick
+                    break;
+                }
+
+                if (1 == cpmmr.fields.fused_core_mode)
+                {
+                    g_fused_core = FUSED_TRUE;
+                }
+                else
+                {
+                    g_fused_core = FUSED_FALSE;
+                }
+            }
+
+            if(g_fused_core == FUSED_TRUE && ((i_core % 2) != 0))
+            {
+                empath_scom_data |= SELECT_ODD_CORE;
+            }
+
             rc = putscom(coreSelect, PC_OCC_SPRC, empath_scom_data);
             if (rc)
             {