/* smp.h: PPC specific SMP stuff. * * 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> */ #ifdef __KERNEL__ #ifndef _PPC_SMP_H #define _PPC_SMP_H #include <linux/config.h> #include <linux/kernel.h> #include <linux/bitops.h> #include <linux/errno.h> #include <linux/cpumask.h> #include <linux/threads.h> #ifdef CONFIG_SMP #ifndef __ASSEMBLY__ struct cpuinfo_PPC { unsigned long loops_per_jiffy; unsigned long pvr; unsigned long *pgd_cache; unsigned long *pte_cache; unsigned long pgtable_cache_sz; }; extern struct cpuinfo_PPC cpu_data[]; extern cpumask_t cpu_online_map; extern cpumask_t cpu_possible_map; extern unsigned long smp_proc_in_lock[]; extern volatile unsigned long cpu_callin_map[]; extern int smp_tb_synchronized; extern struct smp_ops_t *smp_ops; extern void smp_send_tlb_invalidate(int); extern void smp_send_xmon_break(int cpu); struct pt_regs; extern void smp_message_recv(int, struct pt_regs *); extern int __cpu_disable(void); extern void __cpu_die(unsigned int cpu); extern void cpu_die(void) __attribute__((noreturn)); #define raw_smp_processor_id() (current_thread_info()->cpu) extern int __cpu_up(unsigned int cpu); extern int smp_hw_index[]; #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 /* __ASSEMBLY__ */ #else /* !(CONFIG_SMP) */ static inline void cpu_die(void) { } #define get_hard_smp_processor_id(cpu) 0 #define set_hard_smp_processor_id(cpu, phys) #define hard_smp_processor_id() 0 #endif /* !(CONFIG_SMP) */ #ifndef __ASSEMBLY__ extern int boot_cpuid; extern int boot_cpuid_phys; #endif #endif /* !(_PPC_SMP_H) */ #endif /* __KERNEL__ */