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/* Used by kexec crashdump to save all cpu's state */
 44#define SMP_DUMP		0x8
 45#define SMP_ASK_C0COUNT		0x10
 46
 47extern volatile cpumask_t cpu_callin_map;
 48
 49extern void asmlinkage smp_bootstrap(void);
 50
 51/*
 52 * this function sends a 'reschedule' IPI to another CPU.
 53 * it goes straight through and wastes no time serializing
 54 * anything. Worst case is that we lose a reschedule ...
 55 */
 56static inline void smp_send_reschedule(int cpu)
 57{
 58	extern struct plat_smp_ops *mp_ops;	/* private */
 59
 60	mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
 61}
 62
 63#ifdef CONFIG_HOTPLUG_CPU
 64static inline int __cpu_disable(void)
 65{
 66	extern struct plat_smp_ops *mp_ops;	/* private */
 67
 68	return mp_ops->cpu_disable();
 69}
 70
 71static inline void __cpu_die(unsigned int cpu)
 72{
 73	extern struct plat_smp_ops *mp_ops;	/* private */
 74
 75	mp_ops->cpu_die(cpu);
 76}
 77
 78extern void play_dead(void);
 79#endif
 80
 81extern asmlinkage void smp_call_function_interrupt(void);
 82
 83static inline void arch_send_call_function_single_ipi(int cpu)
 84{
 85	extern struct plat_smp_ops *mp_ops;	/* private */
 86
 87	mp_ops->send_ipi_mask(&cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
 88}
 89
 90static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 91{
 92	extern struct plat_smp_ops *mp_ops;	/* private */
 93
 94	mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
 95}
 96
 97#if defined(CONFIG_KEXEC)
 98extern void (*dump_ipi_function_ptr)(void *);
 99void dump_send_ipi(void (*dump_ipi_callback)(void *));
100#endif
101#endif /* __ASM_SMP_H */