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-rw-r--r--arch/powerpc/platforms/pseries/smp.c32
-rw-r--r--arch/powerpc/platforms/pseries/xics.c61
-rw-r--r--arch/powerpc/platforms/pseries/xics.h12
3 files changed, 48 insertions, 57 deletions
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 9d8f8c84ab8..e00f96baa38 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -37,7 +37,6 @@
#include <asm/paca.h>
#include <asm/time.h>
#include <asm/machdep.h>
-#include "xics.h"
#include <asm/cputable.h>
#include <asm/firmware.h>
#include <asm/system.h>
@@ -49,6 +48,7 @@
#include "plpar_wrappers.h"
#include "pseries.h"
+#include "xics.h"
/*
@@ -105,36 +105,6 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
}
#ifdef CONFIG_XICS
-static inline void smp_xics_do_message(int cpu, int msg)
-{
- set_bit(msg, &xics_ipi_message[cpu].value);
- mb();
- xics_cause_IPI(cpu);
-}
-
-static void smp_xics_message_pass(int target, int msg)
-{
- unsigned int i;
-
- if (target < NR_CPUS) {
- smp_xics_do_message(target, msg);
- } else {
- for_each_online_cpu(i) {
- if (target == MSG_ALL_BUT_SELF
- && i == smp_processor_id())
- continue;
- smp_xics_do_message(i, msg);
- }
- }
-}
-
-static int __init smp_xics_probe(void)
-{
- xics_request_IPIs();
-
- return cpus_weight(cpu_possible_map);
-}
-
static void __devinit smp_xics_setup_cpu(int cpu)
{
if (cpu != boot_cpuid)
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index c95697912fe..c0cb356833f 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -71,11 +71,6 @@ static unsigned int interrupt_server_size = 8;
static struct irq_host *xics_host;
-/*
- * XICS only has a single IPI, so encode the messages per CPU
- */
-struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
-
/* RTAS service tokens */
static int ibm_get_xive;
static int ibm_set_xive;
@@ -201,6 +196,15 @@ static void xics_update_irq_servers(void)
}
#ifdef CONFIG_SMP
+/*
+ * XICS only has a single IPI, so encode the messages per CPU
+ */
+struct xics_ipi_struct {
+ unsigned long value;
+ } ____cacheline_aligned;
+
+static struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
+
static int get_irq_server(unsigned int virq, unsigned int strict_check)
{
int server;
@@ -387,7 +391,6 @@ static unsigned int xics_get_irq_lpar(void)
}
#ifdef CONFIG_SMP
-
static irqreturn_t xics_ipi_dispatch(int cpu)
{
WARN_ON(cpu_is_offline(cpu));
@@ -419,6 +422,33 @@ static irqreturn_t xics_ipi_dispatch(int cpu)
return IRQ_HANDLED;
}
+static inline void smp_xics_do_message(int cpu, int msg)
+{
+ set_bit(msg, &xics_ipi_message[cpu].value);
+ mb();
+ if (firmware_has_feature(FW_FEATURE_LPAR))
+ lpar_qirr_info(cpu, IPI_PRIORITY);
+ else
+ direct_qirr_info(cpu, IPI_PRIORITY);
+}
+
+void smp_xics_message_pass(int target, int msg)
+{
+ unsigned int i;
+
+ if (target < NR_CPUS) {
+ smp_xics_do_message(target, msg);
+ } else {
+ for_each_online_cpu(i) {
+ if (target == MSG_ALL_BUT_SELF
+ && i == smp_processor_id())
+ continue;
+ smp_xics_do_message(i, msg);
+ }
+ }
+}
+
+
static irqreturn_t xics_ipi_action_direct(int irq, void *dev_id)
{
int cpu = smp_processor_id();
@@ -436,15 +466,6 @@ static irqreturn_t xics_ipi_action_lpar(int irq, void *dev_id)
return xics_ipi_dispatch(cpu);
}
-
-void xics_cause_IPI(int cpu)
-{
- if (firmware_has_feature(FW_FEATURE_LPAR))
- lpar_qirr_info(cpu, IPI_PRIORITY);
- else
- direct_qirr_info(cpu, IPI_PRIORITY);
-}
-
#endif /* CONFIG_SMP */
static void xics_set_cpu_priority(unsigned char cppr)
@@ -697,7 +718,7 @@ void __init xics_init_IRQ(void)
#ifdef CONFIG_SMP
-void xics_request_IPIs(void)
+static void xics_request_ipi(void)
{
unsigned int ipi;
int rc;
@@ -718,6 +739,14 @@ void xics_request_IPIs(void)
"IPI", NULL);
BUG_ON(rc);
}
+
+int __init smp_xics_probe(void)
+{
+ xics_request_ipi();
+
+ return cpus_weight(cpu_possible_map);
+}
+
#endif /* CONFIG_SMP */
void xics_teardown_cpu(void)
diff --git a/arch/powerpc/platforms/pseries/xics.h b/arch/powerpc/platforms/pseries/xics.h
index 1c5321ae8f2..d1d5a83039a 100644
--- a/arch/powerpc/platforms/pseries/xics.h
+++ b/arch/powerpc/platforms/pseries/xics.h
@@ -12,20 +12,12 @@
#ifndef _POWERPC_KERNEL_XICS_H
#define _POWERPC_KERNEL_XICS_H
-#include <linux/cache.h>
-
extern void xics_init_IRQ(void);
extern void xics_setup_cpu(void);
extern void xics_teardown_cpu(void);
extern void xics_kexec_teardown_cpu(int secondary);
-extern void xics_cause_IPI(int cpu);
-extern void xics_request_IPIs(void);
extern void xics_migrate_irqs_away(void);
-
-struct xics_ipi_struct {
- volatile unsigned long value;
-} ____cacheline_aligned;
-
-extern struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
+extern int smp_xics_probe(void);
+extern void smp_xics_message_pass(int target, int msg);
#endif /* _POWERPC_KERNEL_XICS_H */