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
19struct 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 */
31struct 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
40extern void init_virt_timer(struct vtimer_list *timer);
41extern void add_virt_timer(void *new);
42extern void add_virt_timer_periodic(void *new);
43extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires);
44extern int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires);
45extern int del_virt_timer(struct vtimer_list *timer);
46
47extern void init_cpu_vtimer(void);
48extern void vtime_init(void);
49
50extern void vtime_stop_cpu(void);
51extern void vtime_start_leave(void);
52
53#endif /* __KERNEL__ */
54
55#endif /* _ASM_S390_TIMER_H */