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#include <linux/timer.h>
14
15#define VTIMER_MAX_SLICE (0x7ffffffffffff000LL)
16
17struct vtimer_list {
18	struct list_head entry;
19
20	int cpu;
21	__u64 expires;
22	__u64 interval;
23
24	void (*function)(unsigned long);
25	unsigned long data;
26};
27
28/* the vtimer value will wrap after ca. 71 years */
29struct vtimer_queue {
30	struct list_head list;
31	spinlock_t lock;
32	__u64 timer;		/* last programmed timer */
33	__u64 elapsed;		/* elapsed time of timer expire values */
34	__u64 idle_enter;	/* cpu timer on idle enter */
35	__u64 idle_exit;	/* cpu timer on idle exit */
36};
37
38extern void init_virt_timer(struct vtimer_list *timer);
39extern void add_virt_timer(void *new);
40extern void add_virt_timer_periodic(void *new);
41extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires);
42extern int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires);
43extern int del_virt_timer(struct vtimer_list *timer);
44
45extern void init_cpu_vtimer(void);
46extern void vtime_init(void);
47
48extern void vtime_stop_cpu(void);
49extern void vtime_start_leave(void);
50
51#endif /* _ASM_S390_TIMER_H */