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/*
 * Copyright 2010 B Labs Ltd.
 *
 * Author: Prem Mallappa <prem.mallappa@b-labs.co.uk>
 */
 
#ifndef __GENERIC_SMP_H__
#define __GENERIC_SMP_H__
 
#include INC_SUBARCH(cpu.h)
 
/* IPIs, we define more as we go */
/* we have limited IPI's on ARM, exactly 15 */
#define IPI_TLB_FLUSH	0x00000001
#define IPI_SCHEDULE	0x00000002
#define IPI_CACH_FLUSH	0x00000003
 
#if !defined (CONFIG_NCPU)
#define CONFIG_NCPU	1
#define smp_get_cpuid()		0
#endif
 
/* All cpus in the SMP system */
static inline unsigned int cpu_mask_all(void)
{
	unsigned int mask = 0;
 
	for (int i = 0; i < CONFIG_NCPU; i++)
		mask |= (1 << i);
	return mask;
}
 
/* All but not self */
static inline unsigned int cpu_mask_others(void)
{
	unsigned int mask = 0;
 
	for (int i = 0; i < CONFIG_NCPU; i++)
		if (i != smp_get_cpuid())
			mask |= (1 << i);
	return mask;
}
 
/* Only self */
static inline unsigned int cpu_mask_self(void)
{
	return 1 << smp_get_cpuid();
}
 
#endif	/* __GENERIC_SMP_H__ */