include/asm-ppc/smp.h

   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
  23 struct 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
  31 extern struct cpuinfo_PPC cpu_data[];
  32 extern cpumask_t cpu_online_map;
  33 extern cpumask_t cpu_possible_map;
  34 extern unsigned long smp_proc_in_lock[];
  35 extern volatile unsigned long cpu_callin_map[];
  36 extern int smp_tb_synchronized;
  37 extern struct smp_ops_t *smp_ops;
  38
  39 extern void smp_send_tlb_invalidate(int);
  40 extern void smp_send_xmon_break(int cpu);
  41 struct pt_regs;
  42 extern void smp_message_recv(int, struct pt_regs *);
  43
  44 extern int __cpu_disable(void);
  45 extern void __cpu_die(unsigned int cpu);
  46 extern void cpu_die(void) __attribute__((noreturn));
  47
  48 #define raw_smp_processor_id()  (current_thread_info()->cpu)
  49
  50 extern int __cpu_up(unsigned int cpu);
  51
  52 extern 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
  62 static 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__
  70 extern int boot_cpuid;
  71 extern int boot_cpuid_phys;
  72 #endif
  73
  74 #endif /* !(_PPC_SMP_H) */
  75 #endif /* __KERNEL__ */