120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
|
|
* smp.h: PowerPC-specific SMP code.
|
|
*
|
|
* Original was a copy of sparc smp.h. Now heavily modified
|
|
* for PPC.
|
|
*
|
|
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
|
|
* Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _ASM_POWERPC_SMP_H
|
|
#define _ASM_POWERPC_SMP_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/threads.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#include <asm/paca.h>
|
|
#endif
|
|
|
|
extern int boot_cpuid;
|
|
|
|
extern void cpu_die(void);
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
extern void smp_send_debugger_break(int cpu);
|
|
extern void smp_message_recv(int);
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
extern void fixup_irqs(cpumask_t map);
|
|
int generic_cpu_disable(void);
|
|
int generic_cpu_enable(unsigned int cpu);
|
|
void generic_cpu_die(unsigned int cpu);
|
|
void generic_mach_cpu_die(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#define raw_smp_processor_id() (get_paca()->paca_index)
|
|
#define hard_smp_processor_id() (get_paca()->hw_cpu_id)
|
|
#else
|
|
/* 32-bit */
|
|
extern int smp_hw_index[];
|
|
|
|
#define raw_smp_processor_id() (current_thread_info()->cpu)
|
|
#define hard_smp_processor_id() (smp_hw_index[smp_processor_id()])
|
|
#define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)])
|
|
#define set_hard_smp_processor_id(cpu, phys)\
|
|
(smp_hw_index[(cpu)] = (phys))
|
|
#endif
|
|
|
|
extern cpumask_t cpu_sibling_map[NR_CPUS];
|
|
|
|
/* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
|
|
*
|
|
* Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up
|
|
* in /proc/interrupts will be wrong!!! --Troy */
|
|
#define PPC_MSG_CALL_FUNCTION 0
|
|
#define PPC_MSG_RESCHEDULE 1
|
|
/* This is unused now */
|
|
#if 0
|
|
#define PPC_MSG_MIGRATE_TASK 2
|
|
#endif
|
|
#define PPC_MSG_DEBUGGER_BREAK 3
|
|
|
|
void smp_init_iSeries(void);
|
|
void smp_init_pSeries(void);
|
|
void smp_init_cell(void);
|
|
void smp_setup_cpu_maps(void);
|
|
|
|
extern int __cpu_disable(void);
|
|
extern void __cpu_die(unsigned int cpu);
|
|
|
|
#else
|
|
/* for UP */
|
|
#define smp_setup_cpu_maps()
|
|
|
|
#endif /* CONFIG_SMP */
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#define get_hard_smp_processor_id(CPU) (paca[(CPU)].hw_cpu_id)
|
|
#define set_hard_smp_processor_id(CPU, VAL) \
|
|
do { (paca[(CPU)].hw_cpu_id = (VAL)); } while (0)
|
|
|
|
extern void smp_release_cpus(void);
|
|
|
|
#else
|
|
/* 32-bit */
|
|
#ifndef CONFIG_SMP
|
|
extern int boot_cpuid_phys;
|
|
#define get_hard_smp_processor_id(cpu) boot_cpuid_phys
|
|
#define set_hard_smp_processor_id(cpu, phys)
|
|
#endif
|
|
#endif
|
|
|
|
extern int smt_enabled_at_boot;
|
|
|
|
extern int smp_mpic_probe(void);
|
|
extern void smp_mpic_setup_cpu(int cpu);
|
|
extern void smp_generic_kick_cpu(int nr);
|
|
|
|
extern void smp_generic_give_timebase(void);
|
|
extern void smp_generic_take_timebase(void);
|
|
|
|
extern struct smp_ops_t *smp_ops;
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_SMP_H) */
|