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

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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>
This commit is contained in:
Paul Mundt
2010-03-30 12:38:01 +09:00
parent 4a6feab0ee
commit 3366e3585f
9 changed files with 95 additions and 23 deletions
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39
arch/sh/include/asm/smp-ops.h Normal file
View File

@@ -0,0 +1,39 @@
#ifndef __ASM_SH_SMP_OPS_H
#define __ASM_SH_SMP_OPS_H
struct plat_smp_ops {
void (*smp_setup)(void);
unsigned int (*smp_processor_id)(void);
void (*prepare_cpus)(unsigned int max_cpus);
void (*start_cpu)(unsigned int cpu, unsigned long entry_point);
void (*send_ipi)(unsigned int cpu, unsigned int message);
};
extern struct plat_smp_ops shx3_smp_ops;
#ifdef CONFIG_SMP
static inline void plat_smp_setup(void)
{
extern struct plat_smp_ops *mp_ops; /* private */
BUG_ON(!mp_ops);
mp_ops->smp_setup();
}
extern void register_smp_ops(struct plat_smp_ops *ops);
#else
static inline void plat_smp_setup(void)
{
/* UP, nothing to do ... */
}
static inline void register_smp_ops(struct plat_smp_ops *ops)
{
}
#endif /* CONFIG_SMP */
#endif /* __ASM_SH_SMP_OPS_H */

18
arch/sh/include/asm/smp.h
View File

@@ -3,6 +3,7 @@
#include <linux/bitops.h>
#include <linux/cpumask.h>
#include <asm/smp-ops.h>
#ifdef CONFIG_SMP
@@ -11,7 +12,6 @@
#include <asm/current.h>
#define raw_smp_processor_id() (current_thread_info()->cpu)
#define hard_smp_processor_id() plat_smp_processor_id()
/* Map from cpu id to sequential logical cpu number. */
extern int __cpu_number_map[NR_CPUS];
@@ -36,15 +36,19 @@ void smp_timer_broadcast(const struct cpumask *mask);
void local_timer_interrupt(void);
void local_timer_setup(unsigned int cpu);
void plat_smp_setup(void);
void plat_prepare_cpus(unsigned int max_cpus);
int plat_smp_processor_id(void);
void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
void plat_send_ipi(unsigned int cpu, unsigned int message);
void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
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();
}
#else
#define hard_smp_processor_id() (0)