• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 	void (*cpus_done)(void);
28 	void (*boot_secondary)(int cpu, struct task_struct *idle);
29 	void (*smp_setup)(void);
30 	void (*prepare_cpus)(unsigned int max_cpus);
31 #ifdef CONFIG_HOTPLUG_CPU
32 	int (*cpu_disable)(void);
33 	void (*cpu_die)(unsigned int cpu);
34 #endif
35 };
36 
37 extern void register_smp_ops(struct plat_smp_ops *ops);
38 
plat_smp_setup(void)39 static inline void plat_smp_setup(void)
40 {
41 	extern struct plat_smp_ops *mp_ops;	/* private */
42 
43 	mp_ops->smp_setup();
44 }
45 
46 #else /* !CONFIG_SMP */
47 
48 struct plat_smp_ops;
49 
plat_smp_setup(void)50 static inline void plat_smp_setup(void)
51 {
52 	/* UP, nothing to do ...  */
53 }
54 
register_smp_ops(struct plat_smp_ops * ops)55 static inline void register_smp_ops(struct plat_smp_ops *ops)
56 {
57 }
58 
59 #endif /* !CONFIG_SMP */
60 
register_up_smp_ops(void)61 static inline int register_up_smp_ops(void)
62 {
63 #ifdef CONFIG_SMP_UP
64 	extern struct plat_smp_ops up_smp_ops;
65 
66 	register_smp_ops(&up_smp_ops);
67 
68 	return 0;
69 #else
70 	return -ENODEV;
71 #endif
72 }
73 
register_cmp_smp_ops(void)74 static inline int register_cmp_smp_ops(void)
75 {
76 #ifdef CONFIG_MIPS_CMP
77 	extern struct plat_smp_ops cmp_smp_ops;
78 
79 	register_smp_ops(&cmp_smp_ops);
80 
81 	return 0;
82 #else
83 	return -ENODEV;
84 #endif
85 }
86 
register_vsmp_smp_ops(void)87 static inline int register_vsmp_smp_ops(void)
88 {
89 #ifdef CONFIG_MIPS_MT_SMP
90 	extern struct plat_smp_ops vsmp_smp_ops;
91 
92 	register_smp_ops(&vsmp_smp_ops);
93 
94 	return 0;
95 #else
96 	return -ENODEV;
97 #endif
98 }
99 
100 #endif /* __ASM_SMP_OPS_H */
101