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
20struct task_struct;
21
22struct 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	int (*boot_secondary)(int cpu, struct task_struct *idle);
28	void (*smp_setup)(void);
29	void (*prepare_cpus)(unsigned int max_cpus);
30	void (*prepare_boot_cpu)(void);
31#ifdef CONFIG_HOTPLUG_CPU
32	int (*cpu_disable)(void);
33	void (*cpu_die)(unsigned int cpu);
34	void (*cleanup_dead_cpu)(unsigned cpu);
35#endif
36#ifdef CONFIG_KEXEC_CORE
37	void (*kexec_nonboot_cpu)(void);
38#endif
39};
40
41extern void register_smp_ops(const struct plat_smp_ops *ops);
42
43static inline void plat_smp_setup(void)
44{
45	extern const struct plat_smp_ops *mp_ops;	/* private */
46
47	mp_ops->smp_setup();
48}
49
50extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
51extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
52				      unsigned int action);
53
54#else /* !CONFIG_SMP */
55
56struct plat_smp_ops;
57
58static inline void plat_smp_setup(void)
59{
60	/* UP, nothing to do ...  */
61}
62
63static inline void register_smp_ops(const struct plat_smp_ops *ops)
64{
65}
66
67#endif /* !CONFIG_SMP */
68
69static inline int register_up_smp_ops(void)
70{
71#ifdef CONFIG_SMP_UP
72	extern const struct plat_smp_ops up_smp_ops;
73
74	register_smp_ops(&up_smp_ops);
75
76	return 0;
77#else
78	return -ENODEV;
79#endif
80}
81
82static inline int register_vsmp_smp_ops(void)
83{
84#ifdef CONFIG_MIPS_MT_SMP
85	extern const struct plat_smp_ops vsmp_smp_ops;
86
87	if (!cpu_has_mipsmt)
88		return -ENODEV;
89
90	register_smp_ops(&vsmp_smp_ops);
91
92	return 0;
93#else
94	return -ENODEV;
95#endif
96}
97
98#ifdef CONFIG_MIPS_CPS
99extern int register_cps_smp_ops(void);
100#else
101static inline int register_cps_smp_ops(void)
102{
103	return -ENODEV;
104}
105#endif
106
107#endif /* __ASM_SMP_OPS_H */
108