| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_SH_SMP_H |
| 3 | #define __ASM_SH_SMP_H |
| 4 | |
| 5 | #include <linux/bitops.h> |
| 6 | #include <linux/cpumask.h> |
| 7 | #include <asm/smp-ops.h> |
| 8 | |
| 9 | #ifdef CONFIG_SMP |
| 10 | |
| 11 | #include <linux/spinlock.h> |
| 12 | #include <linux/atomic.h> |
| 13 | #include <asm/current.h> |
| 14 | #include <asm/percpu.h> |
| 15 | |
| 16 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| 17 | |
| 18 | /* Map from cpu id to sequential logical cpu number. */ |
| 19 | extern int __cpu_number_map[NR_CPUS]; |
| 20 | #define cpu_number_map(cpu) __cpu_number_map[cpu] |
| 21 | |
| 22 | /* The reverse map from sequential logical cpu number to cpu id. */ |
| 23 | extern int __cpu_logical_map[NR_CPUS]; |
| 24 | #define cpu_logical_map(cpu) __cpu_logical_map[cpu] |
| 25 | |
| 26 | enum { |
| 27 | SMP_MSG_FUNCTION, |
| 28 | SMP_MSG_RESCHEDULE, |
| 29 | SMP_MSG_FUNCTION_SINGLE, |
| 30 | SMP_MSG_TIMER, |
| 31 | |
| 32 | SMP_MSG_NR, /* must be last */ |
| 33 | }; |
| 34 | |
| 35 | DECLARE_PER_CPU(int, cpu_state); |
| 36 | |
| 37 | void smp_message_recv(unsigned int msg); |
| 38 | |
| 39 | void arch_send_call_function_single_ipi(int cpu); |
| 40 | void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
| 41 | |
| 42 | void native_play_dead(void); |
| 43 | void native_cpu_die(unsigned int cpu); |
| 44 | int native_cpu_disable(unsigned int cpu); |
| 45 | |
| 46 | #ifdef CONFIG_HOTPLUG_CPU |
| 47 | void play_dead_common(void); |
| 48 | extern int __cpu_disable(void); |
| 49 | |
| 50 | static inline void __cpu_die(unsigned int cpu) |
| 51 | { |
| 52 | extern struct plat_smp_ops *mp_ops; /* private */ |
| 53 | |
| 54 | mp_ops->cpu_die(cpu); |
| 55 | } |
| 56 | #endif |
| 57 | |
| 58 | static inline int hard_smp_processor_id(void) |
| 59 | { |
| 60 | extern struct plat_smp_ops *mp_ops; /* private */ |
| 61 | |
| 62 | if (!mp_ops) |
| 63 | return 0; /* boot CPU */ |
| 64 | |
| 65 | return mp_ops->smp_processor_id(); |
| 66 | } |
| 67 | |
| 68 | struct of_cpu_method { |
| 69 | const char *method; |
| 70 | struct plat_smp_ops *ops; |
| 71 | }; |
| 72 | |
| 73 | #define CPU_METHOD_OF_DECLARE(name, _method, _ops) \ |
| 74 | static const struct of_cpu_method __cpu_method_of_table_##name \ |
| 75 | __used __section(__cpu_method_of_table) \ |
| 76 | = { .method = _method, .ops = _ops } |
| 77 | |
| 78 | #else |
| 79 | |
| 80 | #define hard_smp_processor_id() (0) |
| 81 | |
| 82 | #endif /* CONFIG_SMP */ |
| 83 | |
| 84 | #endif /* __ASM_SH_SMP_H */ |