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 */ 85