Updates to make multinode IPC work

 -Fixed node/group id calculations
 -Reduced dbell printk to prevent printk overflow
 -Fixed architectual hole in how internode IPC works
   Workitems won't work, instead just always check
   for IPC on any doorbells to master thread
 -Changed PIR tracing to print out in hex

Change-Id: I25eb7f87fd812a90f98a7724b1ac1100f764fe7b
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/53187
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Prachi Gupta <pragupta@us.ibm.com>
Reviewed-by: William G. Hoffa <wghoffa@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: Dean Sanner <dsanner@us.ibm.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/kernel/syscall.C b/src/kernel/syscall.C
index d4df30733..04c65eb10 100644
--- a/src/kernel/syscall.C
+++ b/src/kernel/syscall.C
@@ -67,6 +67,18 @@ void kernel_execute_hype_doorbell()
         l_work = t->cpu->doorbell_actions.pop();
     }
 
+    //IPC messages come in only on the master, so
+    //If this is a doorbell to the master -- check
+    cpu_t* master = CpuManager::getMasterCPU();
+    if(t->cpu == master)
+    {
+        size_t pir = getPIR();
+        printk("IPC msg pir %lx incoming\n", pir);
+        //Send message to the intrrp in userspace indicating it has
+        // potential a pending IPC message.
+        InterruptMsgHdlr::sendIpcMsg(pir);
+    }
+
     if (t->cpu->idle_task == t)
     {
         t->cpu->scheduler->returnRunnable();