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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_H
12#define __ASM_SMP_H
13
14#include <linux/bitops.h>
15#include <linux/linkage.h>
16#include <linux/smp.h>
17#include <linux/threads.h>
18#include <linux/cpumask.h>
19
20#include <linux/atomic.h>
21#include <asm/smp-ops.h>
22
23extern int smp_num_siblings;
24extern cpumask_t cpu_sibling_map[];
25
26#define raw_smp_processor_id() (current_thread_info()->cpu)
27
28/* Map from cpu id to sequential logical cpu number. This will only
29 not be idempotent when cpus failed to come on-line. */
30extern int __cpu_number_map[NR_CPUS];
31#define cpu_number_map(cpu) __cpu_number_map[cpu]
32
33/* The reverse map from sequential logical cpu number to cpu id. */
34extern int __cpu_logical_map[NR_CPUS];
35#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
36
37#define NO_PROC_ID (-1)
38
39#define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */
40#define SMP_CALL_FUNCTION 0x2
41/* Octeon - Tell another core to flush its icache */
42#define SMP_ICACHE_FLUSH 0x4
43
44extern volatile cpumask_t cpu_callin_map;
45
46extern void asmlinkage smp_bootstrap(void);
47
48/*
49 * this function sends a 'reschedule' IPI to another CPU.
50 * it goes straight through and wastes no time serializing
51 * anything. Worst case is that we lose a reschedule ...
52 */
53static inline void smp_send_reschedule(int cpu)
54{
55 extern struct plat_smp_ops *mp_ops; /* private */
56
57 mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
58}
59
60#ifdef CONFIG_HOTPLUG_CPU
61static inline int __cpu_disable(void)
62{
63 extern struct plat_smp_ops *mp_ops; /* private */
64
65 return mp_ops->cpu_disable();
66}
67
68static inline void __cpu_die(unsigned int cpu)
69{
70 extern struct plat_smp_ops *mp_ops; /* private */
71
72 mp_ops->cpu_die(cpu);
73}
74
75extern void play_dead(void);
76#endif
77
78extern asmlinkage void smp_call_function_interrupt(void);
79
80static inline void arch_send_call_function_single_ipi(int cpu)
81{
82 extern struct plat_smp_ops *mp_ops; /* private */
83
84 mp_ops->send_ipi_mask(&cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
85}
86
87static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
88{
89 extern struct plat_smp_ops *mp_ops; /* private */
90
91 mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
92}
93
94#endif /* __ASM_SMP_H */
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_H
12#define __ASM_SMP_H
13
14#include <linux/bitops.h>
15#include <linux/linkage.h>
16#include <linux/smp.h>
17#include <linux/threads.h>
18#include <linux/cpumask.h>
19
20#include <linux/atomic.h>
21#include <asm/smp-ops.h>
22
23extern int smp_num_siblings;
24extern cpumask_t cpu_sibling_map[];
25
26#define raw_smp_processor_id() (current_thread_info()->cpu)
27
28/* Map from cpu id to sequential logical cpu number. This will only
29 not be idempotent when cpus failed to come on-line. */
30extern int __cpu_number_map[NR_CPUS];
31#define cpu_number_map(cpu) __cpu_number_map[cpu]
32
33/* The reverse map from sequential logical cpu number to cpu id. */
34extern int __cpu_logical_map[NR_CPUS];
35#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
36
37#define NO_PROC_ID (-1)
38
39#define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */
40#define SMP_CALL_FUNCTION 0x2
41/* Octeon - Tell another core to flush its icache */
42#define SMP_ICACHE_FLUSH 0x4
43
44extern volatile cpumask_t cpu_callin_map;
45
46extern void asmlinkage smp_bootstrap(void);
47
48/*
49 * this function sends a 'reschedule' IPI to another CPU.
50 * it goes straight through and wastes no time serializing
51 * anything. Worst case is that we lose a reschedule ...
52 */
53static inline void smp_send_reschedule(int cpu)
54{
55 extern struct plat_smp_ops *mp_ops; /* private */
56
57 mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
58}
59
60#ifdef CONFIG_HOTPLUG_CPU
61static inline int __cpu_disable(void)
62{
63 extern struct plat_smp_ops *mp_ops; /* private */
64
65 return mp_ops->cpu_disable();
66}
67
68static inline void __cpu_die(unsigned int cpu)
69{
70 extern struct plat_smp_ops *mp_ops; /* private */
71
72 mp_ops->cpu_die(cpu);
73}
74
75extern void play_dead(void);
76#endif
77
78extern asmlinkage void smp_call_function_interrupt(void);
79
80static inline void arch_send_call_function_single_ipi(int cpu)
81{
82 extern struct plat_smp_ops *mp_ops; /* private */
83
84 mp_ops->send_ipi_mask(&cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
85}
86
87static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
88{
89 extern struct plat_smp_ops *mp_ops; /* private */
90
91 mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
92}
93
94#endif /* __ASM_SMP_H */