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