arch/s390/include/asm/timer.h

   1 /*
   2  *  include/asm-s390/timer.h
   3  *
   4  *  (C) Copyright IBM Corp. 2003,2006
   5  *  Virtual CPU timer
   6  *
   7  *  Author: Jan Glauber (jang@de.ibm.com)
   8  */
   9
  10 #ifndef _ASM_S390_TIMER_H
  11 #define _ASM_S390_TIMER_H
  12
  13 #ifdef __KERNEL__
  14
  15 #include <linux/timer.h>
  16
  17 #define VTIMER_MAX_SLICE (0x7ffffffffffff000LL)
  18
  19 struct vtimer_list {
  20         struct list_head entry;
  21
  22         int cpu;
  23         __u64 expires;
  24         __u64 interval;
  25
  26         void (*function)(unsigned long);
  27         unsigned long data;
  28 };
  29
  30 /* the vtimer value will wrap after ca. 71 years */
  31 struct vtimer_queue {
  32         struct list_head list;
  33         spinlock_t lock;
  34         __u64 timer;            /* last programmed timer */
  35         __u64 elapsed;          /* elapsed time of timer expire values */
  36         __u64 idle;             /* temp var for idle */
  37         int do_spt;             /* =1: reprogram cpu timer in idle */
  38 };
  39
  40 extern void init_virt_timer(struct vtimer_list *timer);
  41 extern void add_virt_timer(void *new);
  42 extern void add_virt_timer_periodic(void *new);
  43 extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires);
  44 extern int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires);
  45 extern int del_virt_timer(struct vtimer_list *timer);
  46
  47 extern void init_cpu_vtimer(void);
  48 extern void vtime_init(void);
  49
  50 extern void vtime_stop_cpu(void);
  51 extern void vtime_start_leave(void);
  52
  53 #endif /* __KERNEL__ */
  54
  55 #endif /* _ASM_S390_TIMER_H */