2 * Author: Kumar Gala <galak@kernel.crashing.org>
4 * Copyright 2009 Freescale Semiconductor Inc.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
12 #include <linux/stddef.h>
13 #include <linux/kernel.h>
14 #include <linux/smp.h>
15 #include <linux/threads.h>
17 #include <asm/dbell.h>
20 unsigned long dbell_smp_message[NR_CPUS];
22 void smp_dbell_message_pass(int target, int msg)
26 if(target < NR_CPUS) {
27 set_bit(msg, &dbell_smp_message[target]);
28 ppc_msgsnd(PPC_DBELL, 0, target);
30 else if(target == MSG_ALL_BUT_SELF) {
31 for_each_online_cpu(i) {
32 if (i == smp_processor_id())
34 set_bit(msg, &dbell_smp_message[i]);
35 ppc_msgsnd(PPC_DBELL, 0, i);
38 else { /* target == MSG_ALL */
39 for_each_online_cpu(i)
40 set_bit(msg, &dbell_smp_message[i]);
41 ppc_msgsnd(PPC_DBELL, PPC_DBELL_MSG_BRDCAST, 0);