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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * include/asm-s390/timer.h
3 *
Jan Glauber6d7bfd12006-02-03 03:03:50 -08004 * (C) Copyright IBM Corp. 2003,2006
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * 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
Jan Glauber6d7bfd12006-02-03 03:03:50 -080013#ifdef __KERNEL__
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#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
Heiko Carstens9d0a57c2006-10-11 15:31:26 +020026 void (*function)(unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -070027 unsigned long data;
28};
29
Martin Schwidefsky9cfb9b32008-12-31 15:11:41 +010030/* the vtimer value will wrap after ca. 71 years */
Linus Torvalds1da177e2005-04-16 15:20:36 -070031struct vtimer_queue {
32 struct list_head list;
33 spinlock_t lock;
Martin Schwidefsky9cfb9b32008-12-31 15:11:41 +010034 __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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070038};
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);
Jan Glauberb6ecfa92009-04-14 15:36:20 +020044extern int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires);
Linus Torvalds1da177e2005-04-16 15:20:36 -070045extern int del_virt_timer(struct vtimer_list *timer);
46
Heiko Carstens2b67fc42007-02-05 21:16:47 +010047extern void init_cpu_vtimer(void);
48extern void vtime_init(void);
49
Martin Schwidefsky9cfb9b32008-12-31 15:11:41 +010050extern void vtime_stop_cpu(void);
51extern void vtime_start_leave(void);
Heiko Carstens773922e2008-07-14 09:59:06 +020052
Jan Glauber6d7bfd12006-02-03 03:03:50 -080053#endif /* __KERNEL__ */
54
55#endif /* _ASM_S390_TIMER_H */