138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
/*
|
|
* linux/include/asm-arm/smp.h
|
|
*
|
|
* Copyright (C) 2004-2005 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#ifndef __ASM_ARM_SMP_H
|
|
#define __ASM_ARM_SMP_H
|
|
|
|
#include <linux/threads.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/thread_info.h>
|
|
|
|
#include <asm/arch/smp.h>
|
|
|
|
#ifndef CONFIG_SMP
|
|
# error "<asm-arm/smp.h> included in non-SMP build"
|
|
#endif
|
|
|
|
#define raw_smp_processor_id() (current_thread_info()->cpu)
|
|
|
|
/*
|
|
* at the moment, there's not a big penalty for changing CPUs
|
|
* (the >big< penalty is running SMP in the first place)
|
|
*/
|
|
#define PROC_CHANGE_PENALTY 15
|
|
|
|
struct seq_file;
|
|
|
|
/*
|
|
* generate IPI list text
|
|
*/
|
|
extern void show_ipi_list(struct seq_file *p);
|
|
|
|
/*
|
|
* Called from assembly code, this handles an IPI.
|
|
*/
|
|
asmlinkage void do_IPI(struct pt_regs *regs);
|
|
|
|
/*
|
|
* Setup the SMP cpu_possible_map
|
|
*/
|
|
extern void smp_init_cpus(void);
|
|
|
|
/*
|
|
* Move global data into per-processor storage.
|
|
*/
|
|
extern void smp_store_cpu_info(unsigned int cpuid);
|
|
|
|
/*
|
|
* Raise an IPI cross call on CPUs in callmap.
|
|
*/
|
|
extern void smp_cross_call(cpumask_t callmap);
|
|
|
|
/*
|
|
* Broadcast a timer interrupt to the other CPUs.
|
|
*/
|
|
extern void smp_send_timer(void);
|
|
|
|
/*
|
|
* Boot a secondary CPU, and assign it the specified idle task.
|
|
* This also gives us the initial stack to use for this CPU.
|
|
*/
|
|
extern int boot_secondary(unsigned int cpu, struct task_struct *);
|
|
|
|
/*
|
|
* Called from platform specific assembly code, this is the
|
|
* secondary CPU entry point.
|
|
*/
|
|
asmlinkage void secondary_start_kernel(void);
|
|
|
|
/*
|
|
* Perform platform specific initialisation of the specified CPU.
|
|
*/
|
|
extern void platform_secondary_init(unsigned int cpu);
|
|
|
|
/*
|
|
* Initial data for bringing up a secondary CPU.
|
|
*/
|
|
struct secondary_data {
|
|
unsigned long pgdir;
|
|
void *stack;
|
|
};
|
|
extern struct secondary_data secondary_data;
|
|
|
|
extern int __cpu_disable(void);
|
|
extern int mach_cpu_disable(unsigned int cpu);
|
|
|
|
extern void __cpu_die(unsigned int cpu);
|
|
extern void cpu_die(void);
|
|
|
|
extern void platform_cpu_die(unsigned int cpu);
|
|
extern int platform_cpu_kill(unsigned int cpu);
|
|
extern void platform_cpu_enable(unsigned int cpu);
|
|
|
|
#ifdef CONFIG_LOCAL_TIMERS
|
|
/*
|
|
* Setup a local timer interrupt for a CPU.
|
|
*/
|
|
extern void local_timer_setup(unsigned int cpu);
|
|
|
|
/*
|
|
* Stop a local timer interrupt.
|
|
*/
|
|
extern void local_timer_stop(unsigned int cpu);
|
|
|
|
/*
|
|
* Platform provides this to acknowledge a local timer IRQ
|
|
*/
|
|
extern int local_timer_ack(void);
|
|
|
|
#else
|
|
|
|
static inline void local_timer_setup(unsigned int cpu)
|
|
{
|
|
}
|
|
|
|
static inline void local_timer_stop(unsigned int cpu)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* show local interrupt info
|
|
*/
|
|
extern void show_local_irqs(struct seq_file *);
|
|
|
|
/*
|
|
* Called from assembly, this is the local timer IRQ handler
|
|
*/
|
|
asmlinkage void do_local_timer(struct pt_regs *);
|
|
|
|
#endif /* ifndef __ASM_ARM_SMP_H */
|