Merge branch 'mailbox_integration' of git.lfbs.rwth-aachen.de:metalsvm into mailbox_integration

arch/x86/include/asm/icc.h

@@ -57,6 +57,7 @@ int icc_send_irq(int ue);
 void icc_mail_check(void);
 int icc_mail_ping(void);
 int icc_mail_ping_irq(void);
+int icc_mail_noise(void);
 
 #endif
 

arch/x86/scc/icc.c

@@ -271,11 +271,15 @@ int icc_mail_ping( void )
 	return 0;
 }
 
+#define CORE_A 0
+#define CORE_B 1
+#define NOISE_ROUDNS 1000000
+
 
 int icc_mail_ping_irq( void )
 {
 	/* return if not core 0 */
-	if( my_ue ) return 0;
+	if( my_ue != CORE_A ) return 0;
 
 	uint32_t flags;
 	uint64_t timer = 0;
@@ -327,6 +331,31 @@ int icc_mail_ping_irq( void )
 	return 0;
 }
 
+
+int icc_mail_noise() {
+	int i, j;
+	int num_ranks = RCCE_num_ues();
+	iRCCE_MAIL_HEADER* recv_mail = NULL;
+	
+	// leave function if not participating
+	if( (my_ue == 0) || (my_ue == 1) ) {
+		return -1;
+	}
+	
+	for( i=0; i<NOISE_ROUDNS; ++i ) {
+		for( j=0; j<num_ranks; ++j ) {
+			if ( (j == CORE_A) || (j == CORE_B) ) continue;
+			iRCCE_mail_send(0, my_ue*rounds+j, 0, NULL, j);
+			iRCCE_mail_recv(&recv_mail);
+			if( recv_mail ) iRCCE_mail_release(&recv_mail);
+		}
+	}
+
+	iRCCE_mailbox_close(iRCCE_MAILBOX_ALL);
+	
+	return 0;
+}
+
 void icc_mail_check(void)
 {
 	iRCCE_MAIL_HEADER* header = NULL;

kernel/tests.c

@@ -88,8 +88,9 @@ static int STDCALL foo(void* arg)
 
 #ifdef CONFIG_ROCKCREEK
 int STDCALL mail_ping(void* arg) {
-		icc_mail_ping();        
+		//icc_mail_ping();        
 		icc_mail_ping_irq();        
+		icc_mail_noise(); // generate noise in the mesh
 		icc_halt();
 
 	return 0;