Subversion Repositories c0or1k

/*

 * 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__ */