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 */

  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 */