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 #include <asm/mips-cm.h>
17
18 #ifdef CONFIG_SMP
19
20 #include <linux/cpumask.h>
21
22 struct task_struct;
23
24 struct plat_smp_ops {
25 void (*send_ipi_single)(int cpu, unsigned int action);
26 void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
27 void (*init_secondary)(void);
28 void (*smp_finish)(void);
29 void (*boot_secondary)(int cpu, struct task_struct *idle);
30 void (*smp_setup)(void);
31 void (*prepare_cpus)(unsigned int max_cpus);
32 #ifdef CONFIG_HOTPLUG_CPU
33 int (*cpu_disable)(void);
34 void (*cpu_die)(unsigned int cpu);
35 #endif
36 };
37
38 extern void register_smp_ops(struct plat_smp_ops *ops);
39
plat_smp_setup(void)40 static inline void plat_smp_setup(void)
41 {
42 extern struct plat_smp_ops *mp_ops; /* private */
43
44 mp_ops->smp_setup();
45 }
46
47 extern void gic_send_ipi_single(int cpu, unsigned int action);
48 extern void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action);
49
50 #else /* !CONFIG_SMP */
51
52 struct plat_smp_ops;
53
plat_smp_setup(void)54 static inline void plat_smp_setup(void)
55 {
56 /* UP, nothing to do ... */
57 }
58
register_smp_ops(struct plat_smp_ops * ops)59 static inline void register_smp_ops(struct plat_smp_ops *ops)
60 {
61 }
62
63 #endif /* !CONFIG_SMP */
64
register_up_smp_ops(void)65 static inline int register_up_smp_ops(void)
66 {
67 #ifdef CONFIG_SMP_UP
68 extern struct plat_smp_ops up_smp_ops;
69
70 register_smp_ops(&up_smp_ops);
71
72 return 0;
73 #else
74 return -ENODEV;
75 #endif
76 }
77
register_cmp_smp_ops(void)78 static inline int register_cmp_smp_ops(void)
79 {
80 #ifdef CONFIG_MIPS_CMP
81 extern struct plat_smp_ops cmp_smp_ops;
82
83 if (!mips_cm_present())
84 return -ENODEV;
85
86 register_smp_ops(&cmp_smp_ops);
87
88 return 0;
89 #else
90 return -ENODEV;
91 #endif
92 }
93
register_vsmp_smp_ops(void)94 static inline int register_vsmp_smp_ops(void)
95 {
96 #ifdef CONFIG_MIPS_MT_SMP
97 extern struct plat_smp_ops vsmp_smp_ops;
98
99 register_smp_ops(&vsmp_smp_ops);
100
101 return 0;
102 #else
103 return -ENODEV;
104 #endif
105 }
106
107 #ifdef CONFIG_MIPS_CPS
108 extern int register_cps_smp_ops(void);
109 #else
register_cps_smp_ops(void)110 static inline int register_cps_smp_ops(void)
111 {
112 return -ENODEV;
113 }
114 #endif
115
116 #endif /* __ASM_SMP_OPS_H */
117