powerpc: Move smp_mpic_message_pass into mpic.c

Having it here rather than in arch/ppc64/kernel/smp.c means that
we can use it on 32-bit SMP systems easily with ARCH=powerpc.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 02b4d2488bfd..3948e759d41a 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -904,4 +904,25 @@ void mpic_request_ipis(void)
 
         printk("IPIs requested... \n");
 }
+
+void smp_mpic_message_pass(int target, int msg)
+{
+        /* make sure we're sending something that translates to an IPI */
+        if ((unsigned int)msg > 3) {
+                printk("SMP %d: smp_message_pass: unknown msg %d\n",
+                       smp_processor_id(), msg);
+                return;
+        }
+        switch (target) {
+        case MSG_ALL:
+                mpic_send_ipi(msg, 0xffffffff);
+                break;
+        case MSG_ALL_BUT_SELF:
+                mpic_send_ipi(msg, 0xffffffff & ~(1 << smp_processor_id()));
+                break;
+        default:
+                mpic_send_ipi(msg, 1 << target);
+                break;
+        }
+}
 #endif /* CONFIG_SMP */