include/asm-ppc/smp.h

   1 /* smp.h: PPC specific SMP stuff.
   2  *
   3  * Taken from asm-sparc/smp.h
   4  */
   5
   6 #ifndef _PPC_SMP_H
   7 #define _PPC_SMP_H
   8
   9 #include <linux/kernel.h>
  10 #include <linux/tasks.h>
  11
  12 #ifdef __SMP__
  13
  14 #ifndef __ASSEMBLY__
  15
  16 struct cpuinfo_PPC {
  17         unsigned long loops_per_sec;
  18         unsigned long pvr;
  19         unsigned long *pgd_cache;
  20         unsigned long *pte_cache;
  21         unsigned long pgtable_cache_sz;
  22 };
  23 extern struct cpuinfo_PPC cpu_data[NR_CPUS];
  24
  25 extern int first_cpu_booted;
  26 extern unsigned long smp_proc_in_lock[NR_CPUS];
  27
  28 extern void smp_message_pass(int target, int msg, unsigned long data, int wait);
  29 extern void smp_store_cpu_info(int id);
  30 extern void smp_message_recv(void);
  31
  32 #define NO_PROC_ID              0xFF            /* No processor magic marker */
  33 #define PROC_CHANGE_PENALTY     20
  34
  35 /* 1 to 1 mapping on PPC -- Cort */
  36 #define cpu_logical_map(cpu) (cpu)
  37 extern int cpu_number_map[NR_CPUS];
  38 extern volatile unsigned long cpu_callin_map[NR_CPUS];
  39
  40 #define hard_smp_processor_id() (0)
  41 #define smp_processor_id() (current->processor)
  42
  43 struct klock_info_struct {
  44         unsigned long kernel_flag;
  45         unsigned char akp;
  46 };
  47
  48 extern struct klock_info_struct klock_info;
  49 #define KLOCK_HELD       0xffffffff
  50 #define KLOCK_CLEAR      0x0
  51
  52 #endif /* __ASSEMBLY__ */
  53
  54 #else /* !(__SMP__) */
  55
  56 #endif /* !(__SMP__) */
  57
  58 #endif /* !(_PPC_SMP_H) */