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 void (*prepare_boot_cpu)(void);
33 #ifdef CONFIG_HOTPLUG_CPU
34 int (*cpu_disable)(void);
35 void (*cpu_die)(unsigned int cpu);
36 #endif
37 #ifdef CONFIG_KEXEC
38 void (*kexec_nonboot_cpu)(void);
39 #endif
40 };
41
42 extern void register_smp_ops(const struct plat_smp_ops *ops);
43
plat_smp_setup(void)44 static inline void plat_smp_setup(void)
45 {
46 extern const struct plat_smp_ops *mp_ops; /* private */
47
48 mp_ops->smp_setup();
49 }
50
51 extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
52 extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
53 unsigned int action);
54
55 #else /* !CONFIG_SMP */
56
57 struct plat_smp_ops;
58
plat_smp_setup(void)59 static inline void plat_smp_setup(void)
60 {
61 /* UP, nothing to do ... */
62 }
63
register_smp_ops(const struct plat_smp_ops * ops)64 static inline void register_smp_ops(const struct plat_smp_ops *ops)
65 {
66 }
67
68 #endif /* !CONFIG_SMP */
69
register_up_smp_ops(void)70 static inline int register_up_smp_ops(void)
71 {
72 #ifdef CONFIG_SMP_UP
73 extern const struct plat_smp_ops up_smp_ops;
74
75 register_smp_ops(&up_smp_ops);
76
77 return 0;
78 #else
79 return -ENODEV;
80 #endif
81 }
82
register_cmp_smp_ops(void)83 static inline int register_cmp_smp_ops(void)
84 {
85 #ifdef CONFIG_MIPS_CMP
86 extern const struct plat_smp_ops cmp_smp_ops;
87
88 if (!mips_cm_present())
89 return -ENODEV;
90
91 register_smp_ops(&cmp_smp_ops);
92
93 return 0;
94 #else
95 return -ENODEV;
96 #endif
97 }
98
register_vsmp_smp_ops(void)99 static inline int register_vsmp_smp_ops(void)
100 {
101 #ifdef CONFIG_MIPS_MT_SMP
102 extern const struct plat_smp_ops vsmp_smp_ops;
103
104 if (!cpu_has_mipsmt)
105 return -ENODEV;
106
107 register_smp_ops(&vsmp_smp_ops);
108
109 return 0;
110 #else
111 return -ENODEV;
112 #endif
113 }
114
115 #ifdef CONFIG_MIPS_CPS
116 extern int register_cps_smp_ops(void);
117 #else
register_cps_smp_ops(void)118 static inline int register_cps_smp_ops(void)
119 {
120 return -ENODEV;
121 }
122 #endif
123
124 #endif /* __ASM_SMP_OPS_H */
125