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[CONFIG_MIPS_NR_CPU_NR_MAP];
 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#define SMP_ASK_C0COUNT		0x8
 
 
 
 
 46
 47/* Mask of CPUs which are currently definitely operating coherently */
 48extern cpumask_t cpu_coherent_mask;
 49
 50extern asmlinkage void smp_bootstrap(void);
 51
 52extern void calculate_cpu_foreign_map(void);
 53
 54/*
 55 * this function sends a 'reschedule' IPI to another CPU.
 56 * it goes straight through and wastes no time serializing
 57 * anything. Worst case is that we lose a reschedule ...
 58 */
 59static inline void smp_send_reschedule(int cpu)
 60{
 61	extern const struct plat_smp_ops *mp_ops;	/* private */
 62
 63	mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
 64}
 65
 66#ifdef CONFIG_HOTPLUG_CPU
 67static inline int __cpu_disable(void)
 68{
 69	extern const struct plat_smp_ops *mp_ops;	/* private */
 70
 71	return mp_ops->cpu_disable();
 72}
 73
 74static inline void __cpu_die(unsigned int cpu)
 75{
 76	extern const struct plat_smp_ops *mp_ops;	/* private */
 77
 78	mp_ops->cpu_die(cpu);
 79}
 80
 81extern void play_dead(void);
 82#endif
 83
 84/*
 85 * This function will set up the necessary IPIs for Linux to communicate
 86 * with the CPUs in mask.
 87 * Return 0 on success.
 88 */
 89int mips_smp_ipi_allocate(const struct cpumask *mask);
 90
 91/*
 92 * This function will free up IPIs allocated with mips_smp_ipi_allocate to the
 93 * CPUs in mask, which must be a subset of the IPIs that have been configured.
 94 * Return 0 on success.
 95 */
 96int mips_smp_ipi_free(const struct cpumask *mask);
 97
 98static inline void arch_send_call_function_single_ipi(int cpu)
 99{
100	extern const struct plat_smp_ops *mp_ops;	/* private */
101
102	mp_ops->send_ipi_mask(cpumask_of(cpu), SMP_CALL_FUNCTION);
103}
104
105static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
106{
107	extern const struct plat_smp_ops *mp_ops;	/* private */
108
109	mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
110}
111
 
 
 
 
112#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
 56extern void calculate_cpu_foreign_map(void);
 57
 58/*
 59 * this function sends a 'reschedule' IPI to another CPU.
 60 * it goes straight through and wastes no time serializing
 61 * anything. Worst case is that we lose a reschedule ...
 62 */
 63static inline void smp_send_reschedule(int cpu)
 64{
 65	extern struct plat_smp_ops *mp_ops;	/* private */
 66
 67	mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
 68}
 69
 70#ifdef CONFIG_HOTPLUG_CPU
 71static inline int __cpu_disable(void)
 72{
 73	extern struct plat_smp_ops *mp_ops;	/* private */
 74
 75	return mp_ops->cpu_disable();
 76}
 77
 78static inline void __cpu_die(unsigned int cpu)
 79{
 80	extern struct plat_smp_ops *mp_ops;	/* private */
 81
 82	mp_ops->cpu_die(cpu);
 83}
 84
 85extern void play_dead(void);
 86#endif
 87
 88/*
 89 * This function will set up the necessary IPIs for Linux to communicate
 90 * with the CPUs in mask.
 91 * Return 0 on success.
 92 */
 93int mips_smp_ipi_allocate(const struct cpumask *mask);
 94
 95/*
 96 * This function will free up IPIs allocated with mips_smp_ipi_allocate to the
 97 * CPUs in mask, which must be a subset of the IPIs that have been configured.
 98 * Return 0 on success.
 99 */
100int mips_smp_ipi_free(const struct cpumask *mask);
101
102static inline void arch_send_call_function_single_ipi(int cpu)
103{
104	extern struct plat_smp_ops *mp_ops;	/* private */
105
106	mp_ops->send_ipi_mask(cpumask_of(cpu), SMP_CALL_FUNCTION);
107}
108
109static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
110{
111	extern struct plat_smp_ops *mp_ops;	/* private */
112
113	mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
114}
115
116#if defined(CONFIG_KEXEC)
117extern void (*dump_ipi_function_ptr)(void *);
118void dump_send_ipi(void (*dump_ipi_callback)(void *));
119#endif
120#endif /* __ASM_SMP_H */