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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Definitions specific to SMP platforms.
*
* Copyright (C) 2013 ARM Ltd.
*/
#ifndef __ASM_SMP_PLAT_H
#define __ASM_SMP_PLAT_H
#include <linux/cpumask.h>
#include <asm/types.h>
struct mpidr_hash {
u64 mask;
u32 shift_aff[4];
u32 bits;
};
extern struct mpidr_hash mpidr_hash;
static inline u32 mpidr_hash_size(void)
{
return 1 << mpidr_hash.bits;
}
/*
* Retrieve logical cpu index corresponding to a given MPIDR.Aff*
* - mpidr: MPIDR.Aff* bits to be used for the look-up
*
* Returns the cpu logical index or -EINVAL on look-up error
*/
static inline int get_logical_index(u64 mpidr)
{
int cpu;
for (cpu = 0; cpu < nr_cpu_ids; cpu++)
if (cpu_logical_map(cpu) == mpidr)
return cpu;
return -EINVAL;
}
#endif /* __ASM_SMP_PLAT_H */
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