1 /*
2 * This file is subject to the terms and conditions of the GNU General
3 * Public License. See the file "COPYING" in the main directory of this
4 * archive for more details.
5 *
6 * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
7 * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
8 * Copyright (C) 2000, 2001, 2002 Ralf Baechle
9 * Copyright (C) 2000, 2001 Broadcom Corporation
10 */
11 #ifndef __ASM_SMP_OPS_H
12 #define __ASM_SMP_OPS_H
13
14 #include <linux/errno.h>
15
16 #ifdef CONFIG_SMP
17
18 #include <linux/cpumask.h>
19
20 struct task_struct;
21
22 struct plat_smp_ops {
23 void (*send_ipi_single)(int cpu, unsigned int action);
24 void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
25 void (*init_secondary)(void);
26 void (*smp_finish)(void);
27 int (*boot_secondary)(int cpu, struct task_struct *idle);
28 void (*smp_setup)(void);
29 void (*prepare_cpus)(unsigned int max_cpus);
30 void (*prepare_boot_cpu)(void);
31 #ifdef CONFIG_HOTPLUG_CPU
32 int (*cpu_disable)(void);
33 void (*cpu_die)(unsigned int cpu);
34 void (*cleanup_dead_cpu)(unsigned cpu);
35 #endif
36 #ifdef CONFIG_KEXEC_CORE
37 void (*kexec_nonboot_cpu)(void);
38 #endif
39 };
40
41 extern void register_smp_ops(const struct plat_smp_ops *ops);
42
43 static inline void plat_smp_setup(void)
44 {
45 extern const struct plat_smp_ops *mp_ops; /* private */
46
47 mp_ops->smp_setup();
48 }
49
50 extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
51 extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
52 unsigned int action);
53
54 #else /* !CONFIG_SMP */
55
56 struct plat_smp_ops;
57
58 static inline void plat_smp_setup(void)
59 {
60 /* UP, nothing to do ... */
61 }
62
63 static inline void register_smp_ops(const struct plat_smp_ops *ops)
64 {
65 }
66
67 #endif /* !CONFIG_SMP */
68
69 static inline int register_up_smp_ops(void)
70 {
71 #ifdef CONFIG_SMP_UP
72 extern const struct plat_smp_ops up_smp_ops;
73
74 register_smp_ops(&up_smp_ops);
75
76 return 0;
77 #else
78 return -ENODEV;
79 #endif
80 }
81
82 static inline int register_vsmp_smp_ops(void)
83 {
84 #ifdef CONFIG_MIPS_MT_SMP
85 extern const struct plat_smp_ops vsmp_smp_ops;
86
87 if (!cpu_has_mipsmt)
88 return -ENODEV;
89
90 register_smp_ops(&vsmp_smp_ops);
91
92 return 0;
93 #else
94 return -ENODEV;
95 #endif
96 }
97
98 #ifdef CONFIG_MIPS_CPS
99 extern int register_cps_smp_ops(void);
100 #else
101 static inline int register_cps_smp_ops(void)
102 {
103 return -ENODEV;
104 }
105 #endif
106
107 #endif /* __ASM_SMP_OPS_H */
108
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