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-cps.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 int (*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(const struct plat_smp_ops *ops);
39
plat_smp_setup(void)40 static inline void plat_smp_setup(void)
41 {
42 extern const struct plat_smp_ops *mp_ops; /* private */
43
44 mp_ops->smp_setup();
45 }
46
47 extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
48 extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
49 unsigned int action);
50
51 #else /* !CONFIG_SMP */
52
53 struct plat_smp_ops;
54
plat_smp_setup(void)55 static inline void plat_smp_setup(void)
56 {
57 /* UP, nothing to do ... */
58 }
59
register_smp_ops(const struct plat_smp_ops * ops)60 static inline void register_smp_ops(const struct plat_smp_ops *ops)
61 {
62 }
63
64 #endif /* !CONFIG_SMP */
65
register_up_smp_ops(void)66 static inline int register_up_smp_ops(void)
67 {
68 #ifdef CONFIG_SMP_UP
69 extern const struct plat_smp_ops up_smp_ops;
70
71 register_smp_ops(&up_smp_ops);
72
73 return 0;
74 #else
75 return -ENODEV;
76 #endif
77 }
78
register_cmp_smp_ops(void)79 static inline int register_cmp_smp_ops(void)
80 {
81 #ifdef CONFIG_MIPS_CMP
82 extern const struct plat_smp_ops cmp_smp_ops;
83
84 if (!mips_cm_present())
85 return -ENODEV;
86
87 register_smp_ops(&cmp_smp_ops);
88
89 return 0;
90 #else
91 return -ENODEV;
92 #endif
93 }
94
register_vsmp_smp_ops(void)95 static inline int register_vsmp_smp_ops(void)
96 {
97 #ifdef CONFIG_MIPS_MT_SMP
98 extern const struct plat_smp_ops vsmp_smp_ops;
99
100 register_smp_ops(&vsmp_smp_ops);
101
102 return 0;
103 #else
104 return -ENODEV;
105 #endif
106 }
107
108 #ifdef CONFIG_MIPS_CPS
109 extern int register_cps_smp_ops(void);
110 #else
register_cps_smp_ops(void)111 static inline int register_cps_smp_ops(void)
112 {
113 return -ENODEV;
114 }
115 #endif
116
117 #endif /* __ASM_SMP_OPS_H */
118
