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
22struct task_struct;
23
24struct 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
42extern void register_smp_ops(const struct plat_smp_ops *ops);
43
44static 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
51extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
52extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
53				      unsigned int action);
54
55#else /* !CONFIG_SMP */
56
57struct plat_smp_ops;
58
59static inline void plat_smp_setup(void)
60{
61	/* UP, nothing to do ...  */
62}
63
64static inline void register_smp_ops(const struct plat_smp_ops *ops)
65{
66}
67
68#endif /* !CONFIG_SMP */
69
70static 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
83static 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
99static 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	register_smp_ops(&vsmp_smp_ops);
105
106	return 0;
107#else
108	return -ENODEV;
109#endif
110}
111
112#ifdef CONFIG_MIPS_CPS
113extern int register_cps_smp_ops(void);
114#else
115static inline int register_cps_smp_ops(void)
116{
117	return -ENODEV;
118}
119#endif
120
121#endif /* __ASM_SMP_OPS_H */
122