8 files changed, 32 insertions, 55 deletions

diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index fe3f6a3a5307..d6a93a10c0f5 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -235,8 +235,10 @@ void __init mpc85xx_smp_init(void)
                 smp_85xx_ops.message_pass = smp_mpic_message_pass;
         }
 
-        if (cpu_has_feature(CPU_FTR_DBELL))
-                smp_85xx_ops.message_pass = doorbell_message_pass;
+        if (cpu_has_feature(CPU_FTR_DBELL)) {
+                smp_85xx_ops.message_pass = smp_muxed_ipi_message_pass;
+                smp_85xx_ops.cause_ipi = doorbell_cause_ipi;
+        }
 
         BUG_ON(!smp_85xx_ops.message_pass);
 
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 44cfd1bef89b..6a58744d66c3 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -196,8 +196,20 @@ static irqreturn_t iic_ipi_action(int irq, void *dev_id)
 {
         int ipi = (int)(long)dev_id;
 
-        smp_message_recv(ipi);
-
+        switch(ipi) {
+        case PPC_MSG_CALL_FUNCTION:
+                generic_smp_call_function_interrupt();
+                break;
+        case PPC_MSG_RESCHEDULE:
+                /* Upcoming sched hook */
+                break;
+        case PPC_MSG_CALL_FUNC_SINGLE:
+                generic_smp_call_function_single_interrupt();
+                break;
+        case PPC_MSG_DEBUGGER_BREAK:
+                debug_ipi_action(0, NULL);
+                break;
+        }
         return IRQ_HANDLED;
 }
 static void iic_request_ipi(int ipi, const char *name)
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 375c21ca6602..b2103453eb01 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -42,7 +42,6 @@
 #include "irq.h"
 #include "pci.h"
 #include "call_pci.h"
-#include "smp.h"
 
 #ifdef CONFIG_PCI
 
@@ -316,7 +315,7 @@ unsigned int iSeries_get_irq(void)
 #ifdef CONFIG_SMP
         if (get_lppaca()->int_dword.fields.ipi_cnt) {
                 get_lppaca()->int_dword.fields.ipi_cnt = 0;
-                iSeries_smp_message_recv();
+                smp_ipi_demux();
         }
 #endif /* CONFIG_SMP */
         if (hvlpevent_is_pending())
diff --git a/arch/powerpc/platforms/iseries/smp.c b/arch/powerpc/platforms/iseries/smp.c
index dcdbc5dc5aad..e3265adde5d3 100644
--- a/arch/powerpc/platforms/iseries/smp.c
+++ b/arch/powerpc/platforms/iseries/smp.c
@@ -42,26 +42,8 @@
 #include <asm/cputable.h>
 #include <asm/system.h>
 
-#include "smp.h"
-
-static unsigned long iSeries_smp_message[NR_CPUS];
-
-void iSeries_smp_message_recv(void)
-{
-        int cpu = smp_processor_id();
-        int msg;
-
-        if (num_online_cpus() < 2)
-                return;
-
-        for (msg = 0; msg < 4; msg++)
-                if (test_and_clear_bit(msg, &iSeries_smp_message[cpu]))
-                        smp_message_recv(msg);
-}
-
-static void smp_iSeries_message_pass(int cpu, int msg)
+static void smp_iSeries_cause_ipi(int cpu, unsigned long data)
 {
-        set_bit(msg, &iSeries_smp_message[cpu]);
         HvCall_sendIPI(&(paca[cpu]));
 }
 
@@ -93,7 +75,8 @@ static void __devinit smp_iSeries_setup_cpu(int nr)
 }
 
 static struct smp_ops_t iSeries_smp_ops = {
-        .message_pass = smp_iSeries_message_pass,
+        .message_pass = smp_muxed_ipi_message_pass,
+        .cause_ipi    = smp_iSeries_cause_ipi,
         .probe        = smp_iSeries_probe,
         .kick_cpu     = smp_iSeries_kick_cpu,
         .setup_cpu    = smp_iSeries_setup_cpu,
diff --git a/arch/powerpc/platforms/iseries/smp.h b/arch/powerpc/platforms/iseries/smp.h
deleted file mode 100644
index d501f7de01e7..000000000000
--- a/arch/powerpc/platforms/iseries/smp.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _PLATFORMS_ISERIES_SMP_H
-#define _PLATFORMS_ISERIES_SMP_H
-
-extern void iSeries_smp_message_recv(void);
-
-#endif  /* _PLATFORMS_ISERIES_SMP_H */
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index c49e71926a54..a3401071abfb 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -156,28 +156,13 @@ static inline void psurge_clr_ipi(int cpu)
 /*
  * On powersurge (old SMP powermac architecture) we don't have
  * separate IPIs for separate messages like openpic does.  Instead
- * we have a bitmap for each processor, where a 1 bit means that
- * the corresponding message is pending for that processor.
- * Ideally each cpu's entry would be in a different cache line.
+ * use the generic demux helpers
  *  -- paulus.
  */
-static unsigned long psurge_smp_message[NR_CPUS];
-
 void psurge_smp_message_recv(void)
 {
-        int cpu = smp_processor_id();
-        int msg;
-
-        /* clear interrupt */
-        psurge_clr_ipi(cpu);
-
-        if (num_online_cpus() < 2)
-                return;
-
-        /* make sure there is a message there */
-        for (msg = 0; msg < 4; msg++)
-                if (test_and_clear_bit(msg, &psurge_smp_message[cpu]))
-                        smp_message_recv(msg);
+        psurge_clr_ipi(smp_processor_id());
+        smp_ipi_demux();
 }
 
 irqreturn_t psurge_primary_intr(int irq, void *d)
@@ -186,9 +171,8 @@ irqreturn_t psurge_primary_intr(int irq, void *d)
         return IRQ_HANDLED;
 }
 
-static void smp_psurge_message_pass(int cpu, int msg)
+static void smp_psurge_cause_ipi(int cpu, unsigned long data)
 {
-        set_bit(msg, &psurge_smp_message[cpu]);
         psurge_set_ipi(cpu);
 }
 
@@ -428,7 +412,8 @@ void __init smp_psurge_give_timebase(void)
 
 /* PowerSurge-style Macs */
 struct smp_ops_t psurge_smp_ops = {
-        .message_pass   = smp_psurge_message_pass,
+        .message_pass   = smp_muxed_ipi_message_pass,
+        .cause_ipi      = smp_psurge_cause_ipi,
         .probe          = smp_psurge_probe,
         .kick_cpu       = smp_psurge_kick_cpu,
         .setup_cpu      = smp_psurge_setup_cpu,
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 95f578158ff0..fbffd7e47ab8 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -207,7 +207,8 @@ static struct smp_ops_t pSeries_mpic_smp_ops = {
 };
 
 static struct smp_ops_t pSeries_xics_smp_ops = {
-        .message_pass   = NULL, /* Filled at runtime by xics_smp_probe() */
+        .message_pass   = smp_muxed_ipi_message_pass,
+        .cause_ipi      = NULL, /* Filled at runtime by xics_smp_probe() */
         .probe          = xics_smp_probe,
         .kick_cpu       = smp_pSeries_kick_cpu,
         .setup_cpu      = smp_xics_setup_cpu,
diff --git a/arch/powerpc/platforms/wsp/smp.c b/arch/powerpc/platforms/wsp/smp.c
index c7b8db9ed9b3..9d20fa9d3710 100644
--- a/arch/powerpc/platforms/wsp/smp.c
+++ b/arch/powerpc/platforms/wsp/smp.c
@@ -75,7 +75,8 @@ static int __init smp_a2_probe(void)
 }
 
 static struct smp_ops_t a2_smp_ops = {
-        .message_pass   = doorbell_message_pass,
+        .message_pass   = smp_muxed_ipi_message_pass,
+        .cause_ipi      = doorbell_cause_ipi,
         .probe          = smp_a2_probe,
         .kick_cpu       = smp_a2_kick_cpu,
         .setup_cpu      = smp_a2_setup_cpu,