sh: Move platform smp ops in to their own structure.

This cribs the MIPS plat_smp_ops approach for wrapping up the platform
ops. This will allow for mixing and matching different ops on the same
platform in the future.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

4 files changed, 32 insertions, 16 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/smp-shx3.c b/arch/sh/kernel/cpu/sh4a/smp-shx3.c
index c98b4574c44e..5c5d50ccbfcd 100644
--- a/arch/sh/kernel/cpu/sh4a/smp-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/smp-shx3.c
@@ -1,7 +1,7 @@
 /*
  * SH-X3 SMP
  *
- *  Copyright (C) 2007 - 2008  Paul Mundt
+ *  Copyright (C) 2007 - 2010  Paul Mundt
  *  Copyright (C) 2007  Magnus Damm
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -37,7 +37,7 @@ static irqreturn_t ipi_interrupt_handler(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-void __init plat_smp_setup(void)
+static void shx3_smp_setup(void)
 {
 	unsigned int cpu = 0;
 	int i, num;
@@ -63,7 +63,7 @@ void __init plat_smp_setup(void)
         printk(KERN_INFO "Detected %i available secondary CPU(s)\n", num);
 }
 
-void __init plat_prepare_cpus(unsigned int max_cpus)
+static void shx3_prepare_cpus(unsigned int max_cpus)
 {
 	int i;
 
@@ -76,7 +76,7 @@ void __init plat_prepare_cpus(unsigned int max_cpus)
 			    IRQF_DISABLED | IRQF_PERCPU, "IPI", (void *)(long)i);
 }
 
-void plat_start_cpu(unsigned int cpu, unsigned long entry_point)
+static void shx3_start_cpu(unsigned int cpu, unsigned long entry_point)
 {
 	if (__in_29bit_mode())
 		__raw_writel(entry_point, RESET_REG(cpu));
@@ -93,12 +93,12 @@ void plat_start_cpu(unsigned int cpu, unsigned long entry_point)
 	__raw_writel(STBCR_RESET | STBCR_LTSLP, STBCR_REG(cpu));
 }
 
-int plat_smp_processor_id(void)
+static unsigned int shx3_smp_processor_id(void)
 {
 	return __raw_readl(0xff000048); /* CPIDR */
 }
 
-void plat_send_ipi(unsigned int cpu, unsigned int message)
+static void shx3_send_ipi(unsigned int cpu, unsigned int message)
 {
 	unsigned long addr = 0xfe410070 + (cpu * 4);
 
@@ -106,3 +106,11 @@ void plat_send_ipi(unsigned int cpu, unsigned int message)
 
 	__raw_writel(1 << (message << 2), addr); /* C0INTICI..CnINTICI */
 }
+
+struct plat_smp_ops shx3_smp_ops = {
+	.smp_setup		= shx3_smp_setup,
+	.prepare_cpus		= shx3_prepare_cpus,
+	.start_cpu		= shx3_start_cpu,
+	.smp_processor_id	= shx3_smp_processor_id,
+	.send_ipi		= shx3_send_ipi,
+};
diff --git a/arch/sh/kernel/localtimer.c b/arch/sh/kernel/localtimer.c
index 0b04e7d4a9b9..865a2f1029b1 100644
--- a/arch/sh/kernel/localtimer.c
+++ b/arch/sh/kernel/localtimer.c
@@ -44,7 +44,7 @@ static void dummy_timer_set_mode(enum clock_event_mode mode,
 {
 }
 
-void __cpuinit local_timer_setup(unsigned int cpu)
+void local_timer_setup(unsigned int cpu)
 {
 	struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);
 
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 8870d6ba64bf..29155384d5a8 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -459,9 +459,7 @@ void __init setup_arch(char **cmdline_p)
 	if (likely(sh_mv.mv_setup))
 		sh_mv.mv_setup(cmdline_p);
 
-#ifdef CONFIG_SMP
 	plat_smp_setup();
-#endif
 }
 
 /* processor boot mode configuration */
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 002cc612deef..2f348fda0159 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -3,7 +3,7 @@
  *
  * SMP support for the SuperH processors.
  *
- * Copyright (C) 2002 - 2008 Paul Mundt
+ * Copyright (C) 2002 - 2010 Paul Mundt
  * Copyright (C) 2006 - 2007 Akio Idehara
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -31,6 +31,16 @@
 int __cpu_number_map[NR_CPUS];		/* Map physical to logical */
 int __cpu_logical_map[NR_CPUS];		/* Map logical to physical */
 
+struct plat_smp_ops *mp_ops = NULL;
+
+void __cpuinit register_smp_ops(struct plat_smp_ops *ops)
+{
+	if (mp_ops)
+		printk(KERN_WARNING "Overriding previously set SMP ops\n");
+
+	mp_ops = ops;
+}
+
 static inline void __init smp_store_cpu_info(unsigned int cpu)
 {
 	struct sh_cpuinfo *c = cpu_data + cpu;
@@ -46,7 +56,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 
 	init_new_context(current, &init_mm);
 	current_thread_info()->cpu = cpu;
-	plat_prepare_cpus(max_cpus);
+	mp_ops->prepare_cpus(max_cpus);
 
 #ifndef CONFIG_HOTPLUG_CPU
 	init_cpu_present(&cpu_possible_map);
@@ -127,7 +137,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
 			   (unsigned long)&stack_start + sizeof(stack_start));
 	wmb();
 
-	plat_start_cpu(cpu, (unsigned long)_stext);
+	mp_ops->start_cpu(cpu, (unsigned long)_stext);
 
 	timeout = jiffies + HZ;
 	while (time_before(jiffies, timeout)) {
@@ -159,7 +169,7 @@ void __init smp_cpus_done(unsigned int max_cpus)
 
 void smp_send_reschedule(int cpu)
 {
-	plat_send_ipi(cpu, SMP_MSG_RESCHEDULE);
+	mp_ops->send_ipi(cpu, SMP_MSG_RESCHEDULE);
 }
 
 void smp_send_stop(void)
@@ -172,12 +182,12 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 	int cpu;
 
 	for_each_cpu(cpu, mask)
-		plat_send_ipi(cpu, SMP_MSG_FUNCTION);
+		mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION);
 }
 
 void arch_send_call_function_single_ipi(int cpu)
 {
-	plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
+	mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
 }
 
 void smp_timer_broadcast(const struct cpumask *mask)
@@ -185,7 +195,7 @@ void smp_timer_broadcast(const struct cpumask *mask)
 	int cpu;
 
 	for_each_cpu(cpu, mask)
-		plat_send_ipi(cpu, SMP_MSG_TIMER);
+		mp_ops->send_ipi(cpu, SMP_MSG_TIMER);
 }
 
 static void ipi_timer(void)