powerpc: partly merge iseries do_IRQ

Hide some of the iseries details in iSeries_get_irq.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

3 files changed, 28 insertions, 10 deletions

diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 3bd576ecb288..5e92149b9b96 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -35,13 +35,19 @@
 #include <linux/irq.h>
 #include <linux/spinlock.h>
 
+#include <asm/paca.h>
 #include <asm/iseries/hv_types.h>
 #include <asm/iseries/hv_lp_event.h>
 #include <asm/iseries/hv_call_xm.h>
+#include <asm/iseries/it_lp_queue.h>
 
 #include "irq.h"
 #include "call_pci.h"
 
+#if defined(CONFIG_SMP)
+extern void iSeries_smp_message_recv(struct pt_regs *);
+#endif
+
 enum pci_event_type {
         pe_bus_created          = 0,    /* PHB has been created */
         pe_bus_error            = 1,    /* PHB has failed */
@@ -329,3 +335,24 @@ int __init iSeries_allocate_IRQ(HvBusNumber bus,
         irq_desc[virtirq].handler = &iSeries_IRQ_handler;
         return virtirq;
 }
+
+/*
+ * Get the next pending IRQ.
+ */
+int iSeries_get_irq(struct pt_regs *regs)
+{
+        struct paca_struct *lpaca;
+
+        lpaca = get_paca();
+#ifdef CONFIG_SMP
+        if (lpaca->lppaca.int_dword.fields.ipi_cnt) {
+                lpaca->lppaca.int_dword.fields.ipi_cnt = 0;
+                iSeries_smp_message_recv(regs);
+        }
+#endif /* CONFIG_SMP */
+        if (hvlpevent_is_pending())
+                process_hvlpevents(regs);
+
+        /* -2 means ignore this interrupt */
+        return -2;
+}
diff --git a/arch/powerpc/platforms/iseries/irq.h b/arch/powerpc/platforms/iseries/irq.h
index 5f643f16ecc0..b9c801ba5a47 100644
--- a/arch/powerpc/platforms/iseries/irq.h
+++ b/arch/powerpc/platforms/iseries/irq.h
@@ -4,5 +4,6 @@
 extern void iSeries_init_IRQ(void);
 extern int  iSeries_allocate_IRQ(HvBusNumber, HvSubBusNumber, HvAgentId);
 extern void iSeries_activate_IRQs(void);
+extern int iSeries_get_irq(struct pt_regs *);
 
 #endif /* _ISERIES_IRQ_H */
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index da26639190db..ad5ef80500ce 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -571,16 +571,6 @@ static void iSeries_show_cpuinfo(struct seq_file *m)
 
 /*
  * Document me.
- * and Implement me.
- */
-static int iSeries_get_irq(struct pt_regs *regs)
-{
-        /* -2 means ignore this interrupt */
-        return -2;
-}
-
-/*
- * Document me.
  */
 static void iSeries_restart(char *cmd)
 {