Add pointers to GPE trace buffers

Change-Id: Ia313e9d7bddde3b61b8f7fc2319e4583843b9549
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/43284
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christopher J. Cain <cjcain@us.ibm.com>
Reviewed-by: Martha Broyles <mbroyles@us.ibm.com>
Reviewed-by: William A. Bryan <wilbryan@us.ibm.com>

3 files changed, 16 insertions, 5 deletions

diff --git a/src/occ_gpe0/core_data.c b/src/occ_gpe0/core_data.c
index 0ac8376..7dcb613 100644
--- a/src/occ_gpe0/core_data.c
+++ b/src/occ_gpe0/core_data.c
@@ -54,7 +54,7 @@ uint32_t get_core_data(uint32_t i_core,
     // rc == 1 resource occupied  (see ppe42_scom.h)   Action: return with rc
     // rc == 2 Core is fenced, offline                 Action: return with rc
     // rc == 3 partial good
-    // rc == 4 address error
+    // rc == 4 address error (Can be caused by other device using bus)
     // rc == 5 clock error
     // rc == 6 packet error
     // rc == 7 timeout
diff --git a/src/occ_gpe0/gpe0_main.c b/src/occ_gpe0/gpe0_main.c
index 1eb227a..2962d60 100644
--- a/src/occ_gpe0/gpe0_main.c
+++ b/src/occ_gpe0/gpe0_main.c
@@ -30,6 +30,7 @@
 /// an example of how to add traces to the code.
 
 #include "pk.h"
+#include "pk_trace.h"
 #include "ipc_api.h"
 #include "ipc_ping.h"
 #include "gpe_export.h"
@@ -47,6 +48,8 @@ PkThread       G_main_thread;
 
 gpe_shared_data_t * G_gpe_shared_data = (gpe_shared_data_t*) GPE_SHARED_DATA_ADDR;
 
+extern PkTraceBuffer* g_pk_trace_buf_ptr;
+
 //statically initialize a ping command message
 IPC_PING_CMD_CREATE(G_ping_cmd);
 
@@ -83,6 +86,10 @@ int main(int argc, char **argv)
         l_timebase = PPE_TIMEBASE_HZ;
     }
 
+    // Mark the location of the trace buffer in shared data
+    G_gpe_shared_data->gpe0_tb_ptr = (uint32_t) g_pk_trace_buf_ptr;
+    G_gpe_shared_data->gpe0_tb_sz = sizeof(PkTraceBuffer);
+
     // initializes kernel data (stack, threads, timebase, timers, etc.)
     pk_initialize((PkAddress)G_kernel_stack,
                   KERNEL_STACK_SIZE,
diff --git a/src/occ_gpe0/gpe_core_data.c b/src/occ_gpe0/gpe_core_data.c
index d8f6983..0911a49 100644
--- a/src/occ_gpe0/gpe_core_data.c
+++ b/src/occ_gpe0/gpe_core_data.c
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER OnChipController Project                                     */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2015,2016                        */
+/* Contributors Listed Below - COPYRIGHT 2015,2017                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -50,15 +50,19 @@ void gpe_get_core_data(ipc_msg_t* cmd, void* arg)
     uint32_t rc;    // return code
     ipc_async_cmd_t *async_cmd  = (ipc_async_cmd_t*)cmd;
     ipc_core_data_parms_t *args = (ipc_core_data_parms_t*) async_cmd->cmd_data;
-
+    static uint32_t L_trace = 0;
 
     rc = get_core_data(args->core_num,     // core ID
                        args->data);        // CoreData*
 
     if(rc)
     {
-        PK_TRACE("gpe_get_core_data: get_core_data failed, rc = 0x%08x, core = 0x%08x",
-                 rc, args->core_num);
+        if( !(L_trace & (1 << args->core_num)) )
+        {
+            PK_TRACE("gpe_get_core_data: get_core_data failed, rc = 0x%08x, core = 0x%08x",
+                     rc, args->core_num);
+            L_trace |= (1 << args->core_num);
+        }
         gpe_set_ffdc(&(args->error), args->core_num,
                       GPE_RC_GET_CORE_DATA_FAILED, rc);
     }