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[];
 25extern cpumask_t cpu_core_map[];
 26extern cpumask_t cpu_foreign_map;
 27
 28#define raw_smp_processor_id() (current_thread_info()->cpu)
 29
 30/* Map from cpu id to sequential logical cpu number.  This will only
 31   not be idempotent when cpus failed to come on-line.	*/
 32extern int __cpu_number_map[NR_CPUS];
 33#define cpu_number_map(cpu)  __cpu_number_map[cpu]
 34
 35/* The reverse map from sequential logical cpu number to cpu id.  */
 36extern int __cpu_logical_map[NR_CPUS];
 37#define cpu_logical_map(cpu)  __cpu_logical_map[cpu]
 38
 39#define NO_PROC_ID	(-1)
 40
 41#define SMP_RESCHEDULE_YOURSELF 0x1	/* XXX braindead */
 42#define SMP_CALL_FUNCTION	0x2
 43/* Octeon - Tell another core to flush its icache */
 44#define SMP_ICACHE_FLUSH	0x4
 45/* Used by kexec crashdump to save all cpu's state */
 46#define SMP_DUMP		0x8
 47#define SMP_ASK_C0COUNT		0x10
 48
 49extern cpumask_t cpu_callin_map;
 50
 51/* Mask of CPUs which are currently definitely operating coherently */
 52extern cpumask_t cpu_coherent_mask;
 53
 54extern void asmlinkage smp_bootstrap(void);
 55
 56/*
 57 * this function sends a 'reschedule' IPI to another CPU.
 58 * it goes straight through and wastes no time serializing
 59 * anything. Worst case is that we lose a reschedule ...
 60 */
 61static inline void smp_send_reschedule(int cpu)
 62{
 63	extern struct plat_smp_ops *mp_ops;	/* private */
 64
 65	mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
 66}
 67
 68#ifdef CONFIG_HOTPLUG_CPU
 69static inline int __cpu_disable(void)
 70{
 71	extern struct plat_smp_ops *mp_ops;	/* private */
 72
 73	return mp_ops->cpu_disable();
 74}
 75
 76static inline void __cpu_die(unsigned int cpu)
 77{
 78	extern struct plat_smp_ops *mp_ops;	/* private */
 79
 80	mp_ops->cpu_die(cpu);
 81}
 82
 83extern void play_dead(void);
 84#endif
 85
 
 
 86static inline void arch_send_call_function_single_ipi(int cpu)
 87{
 88	extern struct plat_smp_ops *mp_ops;	/* private */
 89
 90	mp_ops->send_ipi_mask(cpumask_of(cpu), SMP_CALL_FUNCTION);
 91}
 92
 93static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 94{
 95	extern struct plat_smp_ops *mp_ops;	/* private */
 96
 97	mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
 98}
 99
100#if defined(CONFIG_KEXEC)
101extern void (*dump_ipi_function_ptr)(void *);
102void dump_send_ipi(void (*dump_ipi_callback)(void *));
103#endif
104#endif /* __ASM_SMP_H */