| /* 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/smp.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 */ |
