smp.h 1.96 KB
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#ifndef __ASM_SH_SMP_H
#define __ASM_SH_SMP_H

#include <linux/bitops.h>
#include <linux/cpumask.h>
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#include <asm/smp-ops.h>
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#ifdef CONFIG_SMP

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#include <linux/spinlock.h>
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#include <linux/atomic.h>
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#include <asm/current.h>
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#include <asm/percpu.h>
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#define raw_smp_processor_id()	(current_thread_info()->cpu)
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/* Map from cpu id to sequential logical cpu number. */
extern int __cpu_number_map[NR_CPUS];
#define cpu_number_map(cpu)  __cpu_number_map[cpu]

/* The reverse map from sequential logical cpu number to cpu id.  */
extern int __cpu_logical_map[NR_CPUS];
#define cpu_logical_map(cpu)  __cpu_logical_map[cpu]
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enum {
	SMP_MSG_FUNCTION,
	SMP_MSG_RESCHEDULE,
	SMP_MSG_FUNCTION_SINGLE,
	SMP_MSG_TIMER,

	SMP_MSG_NR,	/* must be last */
};
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DECLARE_PER_CPU(int, cpu_state);

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void smp_message_recv(unsigned int msg);
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void smp_timer_broadcast(const struct cpumask *mask);
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void local_timer_interrupt(void);
void local_timer_setup(unsigned int cpu);
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void local_timer_stop(unsigned int cpu);
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void arch_send_call_function_single_ipi(int cpu);
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void arch_send_call_function_ipi_mask(const struct cpumask *mask);

void native_play_dead(void);
void native_cpu_die(unsigned int cpu);
int native_cpu_disable(unsigned int cpu);

#ifdef CONFIG_HOTPLUG_CPU
void play_dead_common(void);
extern int __cpu_disable(void);

static inline void __cpu_die(unsigned int cpu)
{
	extern struct plat_smp_ops *mp_ops;     /* private */

	mp_ops->cpu_die(cpu);
}
#endif
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static inline int hard_smp_processor_id(void)
{
	extern struct plat_smp_ops *mp_ops;	/* private */

	if (!mp_ops)
		return 0;	/* boot CPU */

	return mp_ops->smp_processor_id();
}

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struct of_cpu_method {
	const char *method;
	struct plat_smp_ops *ops;
};

#define CPU_METHOD_OF_DECLARE(name, _method, _ops)			\
	static const struct of_cpu_method __cpu_method_of_table_##name	\
		__used __section(__cpu_method_of_table)			\
		= { .method = _method, .ops = _ops }

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#else
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#define hard_smp_processor_id()	(0)

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#endif /* CONFIG_SMP */

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#endif /* __ASM_SH_SMP_H */