mpidr.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef __ARCH_MPIDR_H__
#define __ARCH_MPIDR_H__
 
#include <stdint.h>
#include <arch/lib_helpers.h>
 
enum {
        MPIDR_RES1_SHIFT = 31,
        MPIDR_U_SHIFT = 30,
        MPIDR_MT_SHIFT = 24,
 
        MPIDR_AFFINITY_0_SHIFT = 0,
        MPIDR_AFFINITY_1_SHIFT = 8,
        MPIDR_AFFINITY_2_SHIFT = 16,
        MPIDR_AFFINITY_3_SHIFT = 32,
        MPIDR_AFFINITY_MASK = 0xff,
};
 
static inline uint64_t mpidr_mask(uint8_t aff3, uint8_t aff2,
                                  uint8_t aff1, uint8_t aff0)
{
        uint64_t mpidr = 0;
 
        mpidr |= (uint64_t)aff3 << MPIDR_AFFINITY_3_SHIFT;
        mpidr |= (uint64_t)aff2 << MPIDR_AFFINITY_2_SHIFT;
        mpidr |= (uint64_t)aff1 << MPIDR_AFFINITY_1_SHIFT;
        mpidr |= (uint64_t)aff0 << MPIDR_AFFINITY_0_SHIFT;
 
        return mpidr;
}
 
static inline uint64_t read_mpidr(void)
{
        return raw_read_mpidr_el1();
}
 
static inline uint64_t read_affinity_mpidr(void)
{
        uint64_t affinity_mask;
        affinity_mask = mpidr_mask(MPIDR_AFFINITY_MASK, MPIDR_AFFINITY_MASK,
                                   MPIDR_AFFINITY_MASK, MPIDR_AFFINITY_MASK);
        return read_mpidr() & affinity_mask;
}
 
#endif /* __ARCH_MPIDR_H__ */