linux-kernel - [PATCH v9 09/13] ARM: SoC: convert highbank to SoC descriptor

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Message-Id: <1347461906-13527-10-git-send-email-arnd@arndb.de>
Date:	Wed, 12 Sep 2012 16:58:22 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Marc Zyngier <marc.zyngier@....com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	Arnd Bergmann <arnd@...db.de>
Subject: [PATCH v9 09/13] ARM: SoC: convert highbank to SoC descriptor

From: Marc Zyngier <marc.zyngier@....com>

Convert the highbank platform to use the SoC descriptor to provide
its SMP and CPU hotplug operations.

Cc: Rob Herring <rob.herring@...xeda.com>
Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/mach-highbank/core.h     |    3 +++
 arch/arm/mach-highbank/highbank.c |    1 +
 arch/arm/mach-highbank/hotplug.c  |   16 +---------------
 arch/arm/mach-highbank/platsmp.c  |   18 ++++++++++++++----
 4 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h
index 141ed51..598ee78 100644
--- a/arch/arm/mach-highbank/core.h
+++ b/arch/arm/mach-highbank/core.h
@@ -9,3 +9,6 @@ static inline void highbank_lluart_map_io(void) {}
 #endif
 
 extern void highbank_smc1(int fn, int arg);
+extern void highbank_cpu_die(unsigned int cpu);
+
+extern struct smp_operations highbank_smp_ops;
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
index d75b0a7..709bd72 100644
--- a/arch/arm/mach-highbank/highbank.c
+++ b/arch/arm/mach-highbank/highbank.c
@@ -162,6 +162,7 @@ static const char *highbank_match[] __initconst = {
 };
 
 DT_MACHINE_START(HIGHBANK, "Highbank")
+	.smp		= smp_ops(highbank_smp_ops),
 	.map_io		= highbank_map_io,
 	.init_irq	= highbank_init_irq,
 	.timer		= &highbank_timer,
diff --git a/arch/arm/mach-highbank/hotplug.c b/arch/arm/mach-highbank/hotplug.c
index 977cebb..1277da3 100644
--- a/arch/arm/mach-highbank/hotplug.c
+++ b/arch/arm/mach-highbank/hotplug.c
@@ -24,16 +24,11 @@
 
 extern void secondary_startup(void);
 
-int platform_cpu_kill(unsigned int cpu)
-{
-	return 1;
-}
-
 /*
  * platform-specific code to shutdown a CPU
  *
  */
-void platform_cpu_die(unsigned int cpu)
+void highbank_cpu_die(unsigned int cpu)
 {
 	flush_cache_all();
 
@@ -45,12 +40,3 @@ void platform_cpu_die(unsigned int cpu)
 	/* We should never return from idle */
 	panic("highbank: cpu %d unexpectedly exit from shutdown\n", cpu);
 }
-
-int platform_cpu_disable(unsigned int cpu)
-{
-	/*
-	 * CPU0 should not be shut down via hotplug.  cpu_idle can WFI
-	 * or a proper shutdown or hibernate should be used.
-	 */
-	return cpu == 0 ? -EPERM : 0;
-}
diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c
index d01364c..fa9560e 100644
--- a/arch/arm/mach-highbank/platsmp.c
+++ b/arch/arm/mach-highbank/platsmp.c
@@ -25,12 +25,12 @@
 
 extern void secondary_startup(void);
 
-void __cpuinit platform_secondary_init(unsigned int cpu)
+static void __cpuinit highbank_secondary_init(unsigned int cpu)
 {
 	gic_secondary_init(0);
 }
 
-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
 	gic_raise_softirq(cpumask_of(cpu), 0);
 	return 0;
@@ -40,7 +40,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
  * Initialise the CPU possible map early - this describes the CPUs
  * which may be present or become present in the system.
  */
-void __init smp_init_cpus(void)
+static void __init highbank_smp_init_cpus(void)
 {
 	unsigned int i, ncores;
 
@@ -61,7 +61,7 @@ void __init smp_init_cpus(void)
 	set_smp_cross_call(gic_raise_softirq);
 }
 
-void __init platform_smp_prepare_cpus(unsigned int max_cpus)
+static void __init highbank_smp_prepare_cpus(unsigned int max_cpus)
 {
 	int i;
 
@@ -76,3 +76,13 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
 	for (i = 1; i < max_cpus; i++)
 		highbank_set_cpu_jump(i, secondary_startup);
 }
+
+struct smp_operations highbank_smp_ops __initdata = {
+	.smp_init_cpus		= highbank_smp_init_cpus,
+	.smp_prepare_cpus	= highbank_smp_prepare_cpus,
+	.smp_secondary_init	= highbank_secondary_init,
+	.smp_boot_secondary	= highbank_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+	.cpu_die		= highbank_cpu_die,
+#endif
+};
-- 
1.7.10

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