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/atomic.h>
12 #include <asm/current.h>
13 #include <asm/percpu.h>
14
15 #define raw_smp_processor_id() (current_thread_info()->cpu)
16
17 /* Map from cpu id to sequential logical cpu number. */
18 extern int __cpu_number_map[NR_CPUS];
19 #define cpu_number_map(cpu) __cpu_number_map[cpu]
20
21 /* The reverse map from sequential logical cpu number to cpu id. */
22 extern int __cpu_logical_map[NR_CPUS];
23 #define cpu_logical_map(cpu) __cpu_logical_map[cpu]
24
25 enum {
26 SMP_MSG_FUNCTION,
27 SMP_MSG_RESCHEDULE,
28 SMP_MSG_FUNCTION_SINGLE,
29 SMP_MSG_TIMER,
30
31 SMP_MSG_NR, /* must be last */
32 };
33
34 DECLARE_PER_CPU(int, cpu_state);
35
36 void smp_message_recv(unsigned int msg);
37
38 void arch_send_call_function_single_ipi(int cpu);
39 void arch_send_call_function_ipi_mask(const struct cpumask *mask);
40
41 void native_play_dead(void);
42 void native_cpu_die(unsigned int cpu);
43 int native_cpu_disable(unsigned int cpu);
44
45 #ifdef CONFIG_HOTPLUG_CPU
46 void play_dead_common(void);
47 extern int __cpu_disable(void);
48
49 static inline void __cpu_die(unsigned int cpu)
50 {
51 extern struct plat_smp_ops *mp_ops; /* private */
52
53 mp_ops->cpu_die(cpu);
54 }
55 #endif
56
57 static inline int hard_smp_processor_id(void)
58 {
59 extern struct plat_smp_ops *mp_ops; /* private */
60
61 if (!mp_ops)
62 return 0; /* boot CPU */
63
64 return mp_ops->smp_processor_id();
65 }
66
67 struct of_cpu_method {
68 const char *method;
69 struct plat_smp_ops *ops;
70 };
71
72 #define CPU_METHOD_OF_DECLARE(name, _method, _ops) \
73 static const struct of_cpu_method __cpu_method_of_table_##name \
74 __used __section("__cpu_method_of_table") \
75 = { .method = _method, .ops = _ops }
76
77 #else
78
79 #define hard_smp_processor_id() (0)
80
81 #endif /* CONFIG_SMP */
82
83 #endif /* __ASM_SH_SMP_H */
84
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.