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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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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 |
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