1/* smp.h: PPC specific SMP stuff. 2 * 3 * Original was a copy of sparc smp.h. Now heavily modified 4 * for PPC. 5 * 6 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) 7 * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com> 8 */ 9#ifdef __KERNEL__ 10#ifndef _PPC_SMP_H 11#define _PPC_SMP_H 12 13#include <linux/kernel.h> 14#include <linux/bitops.h> 15#include <linux/errno.h> 16#include <linux/cpumask.h> 17#include <linux/threads.h> 18 19#ifdef CONFIG_SMP 20 21#ifndef __ASSEMBLY__ 22 23struct cpuinfo_PPC { 24 unsigned long loops_per_jiffy; 25 unsigned long pvr; 26 unsigned long *pgd_cache; 27 unsigned long *pte_cache; 28 unsigned long pgtable_cache_sz; 29}; 30 31extern struct cpuinfo_PPC cpu_data[]; 32extern cpumask_t cpu_online_map; 33extern cpumask_t cpu_possible_map; 34extern unsigned long smp_proc_in_lock[]; 35extern volatile unsigned long cpu_callin_map[]; 36extern int smp_tb_synchronized; 37extern struct smp_ops_t *smp_ops; 38 39extern void smp_send_tlb_invalidate(int); 40extern void smp_send_xmon_break(int cpu); 41struct pt_regs; 42extern void smp_message_recv(int); 43 44extern int __cpu_disable(void); 45extern void __cpu_die(unsigned int cpu); 46extern void cpu_die(void) __attribute__((noreturn)); 47 48#define raw_smp_processor_id() (current_thread_info()->cpu) 49 50extern int __cpu_up(unsigned int cpu); 51 52extern int smp_hw_index[]; 53#define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) 54#define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)]) 55#define set_hard_smp_processor_id(cpu, phys)\ 56 (smp_hw_index[(cpu)] = (phys)) 57 58#endif /* __ASSEMBLY__ */ 59 60#else /* !(CONFIG_SMP) */ 61 62static inline void cpu_die(void) { } 63#define get_hard_smp_processor_id(cpu) 0 64#define set_hard_smp_processor_id(cpu, phys) 65#define hard_smp_processor_id() 0 66 67#endif /* !(CONFIG_SMP) */ 68 69#ifndef __ASSEMBLY__ 70extern int boot_cpuid; 71extern int boot_cpuid_phys; 72#endif 73 74#endif /* !(_PPC_SMP_H) */ 75#endif /* __KERNEL__ */ 76