xref: /dflybsd-src/sys/dev/drm/include/linux/timer.h (revision 4c816622dfefdc406f11c0f139b23dcb92d620fd)
177343d59SFrançois Tigeot /*-
277343d59SFrançois Tigeot  * Copyright (c) 2010 Isilon Systems, Inc.
377343d59SFrançois Tigeot  * Copyright (c) 2010 iX Systems, Inc.
477343d59SFrançois Tigeot  * Copyright (c) 2010 Panasas, Inc.
5fe87864cSFrançois Tigeot  * Copyright (c) 2014 François Tigeot
677343d59SFrançois Tigeot  * All rights reserved.
777343d59SFrançois Tigeot  *
877343d59SFrançois Tigeot  * Redistribution and use in source and binary forms, with or without
977343d59SFrançois Tigeot  * modification, are permitted provided that the following conditions
1077343d59SFrançois Tigeot  * are met:
1177343d59SFrançois Tigeot  * 1. Redistributions of source code must retain the above copyright
1277343d59SFrançois Tigeot  *    notice unmodified, this list of conditions, and the following
1377343d59SFrançois Tigeot  *    disclaimer.
1477343d59SFrançois Tigeot  * 2. Redistributions in binary form must reproduce the above copyright
1577343d59SFrançois Tigeot  *    notice, this list of conditions and the following disclaimer in the
1677343d59SFrançois Tigeot  *    documentation and/or other materials provided with the distribution.
1777343d59SFrançois Tigeot  *
1877343d59SFrançois Tigeot  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1977343d59SFrançois Tigeot  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
2077343d59SFrançois Tigeot  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
2177343d59SFrançois Tigeot  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
2277343d59SFrançois Tigeot  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
2377343d59SFrançois Tigeot  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2477343d59SFrançois Tigeot  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2577343d59SFrançois Tigeot  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2677343d59SFrançois Tigeot  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
2777343d59SFrançois Tigeot  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2877343d59SFrançois Tigeot  */
2977343d59SFrançois Tigeot #ifndef _LINUX_TIMER_H_
3077343d59SFrançois Tigeot #define _LINUX_TIMER_H_
3177343d59SFrançois Tigeot 
3277343d59SFrançois Tigeot #include <linux/types.h>
3377343d59SFrançois Tigeot 
3477343d59SFrançois Tigeot #include <sys/param.h>
3577343d59SFrançois Tigeot #include <sys/kernel.h>
3677343d59SFrançois Tigeot #include <sys/callout.h>
37fe87864cSFrançois Tigeot #include <sys/thread.h>
3877343d59SFrançois Tigeot 
3977343d59SFrançois Tigeot struct timer_list {
4077343d59SFrançois Tigeot 	struct callout	timer_callout;
4177343d59SFrançois Tigeot 	void		(*function)(unsigned long);
4277343d59SFrançois Tigeot 	unsigned long	data;
4377343d59SFrançois Tigeot 	unsigned long	expires;
44fe87864cSFrançois Tigeot 	struct lwkt_token timer_token;
4577343d59SFrançois Tigeot };
4677343d59SFrançois Tigeot 
4777343d59SFrançois Tigeot static inline void
4877343d59SFrançois Tigeot _timer_fn(void *context)
4977343d59SFrançois Tigeot {
5077343d59SFrançois Tigeot 	struct timer_list *timer;
5177343d59SFrançois Tigeot 
5277343d59SFrançois Tigeot 	timer = context;
5377343d59SFrançois Tigeot 	timer->function(timer->data);
5477343d59SFrançois Tigeot }
5577343d59SFrançois Tigeot 
5677343d59SFrançois Tigeot #define	setup_timer(timer, func, dat)					\
5777343d59SFrançois Tigeot do {									\
5877343d59SFrançois Tigeot 	(timer)->function = (func);					\
5977343d59SFrançois Tigeot 	(timer)->data = (dat);						\
60fe87864cSFrançois Tigeot 	lwkt_token_init(&(timer)->timer_token, "timer token");	\
61fe87864cSFrançois Tigeot 	callout_init_mp(&(timer)->timer_callout);			\
6277343d59SFrançois Tigeot } while (0)
6377343d59SFrançois Tigeot 
6477343d59SFrançois Tigeot #define	init_timer(timer)						\
6577343d59SFrançois Tigeot do {									\
6677343d59SFrançois Tigeot 	(timer)->function = NULL;					\
6777343d59SFrançois Tigeot 	(timer)->data = 0;						\
68fe87864cSFrançois Tigeot 	lwkt_token_init(&(timer)->timer_token, "timer token");	\
69fe87864cSFrançois Tigeot 	callout_init_mp(&(timer)->timer_callout);			\
7077343d59SFrançois Tigeot } while (0)
7177343d59SFrançois Tigeot 
7277343d59SFrançois Tigeot #define	mod_timer(timer, exp)						\
7377343d59SFrançois Tigeot do {									\
7477343d59SFrançois Tigeot 	(timer)->expires = (exp);					\
75fe87864cSFrançois Tigeot 	lwkt_gettoken(&(timer)->timer_token);				\
7677343d59SFrançois Tigeot 	callout_reset(&(timer)->timer_callout, (exp) - jiffies,		\
7777343d59SFrançois Tigeot 	    _timer_fn, (timer));					\
78fe87864cSFrançois Tigeot 	lwkt_reltoken(&(timer)->timer_token);				\
7977343d59SFrançois Tigeot } while (0)
8077343d59SFrançois Tigeot 
8177343d59SFrançois Tigeot #define	add_timer(timer)						\
82fe87864cSFrançois Tigeot 	lwkt_gettoken(&(timer)->timer_token);				\
8377343d59SFrançois Tigeot 	callout_reset(&(timer)->timer_callout,				\
84fe87864cSFrançois Tigeot 	    (timer)->expires - jiffies, _timer_fn, (timer));		\
85fe87864cSFrançois Tigeot 	lwkt_reltoken(&(timer)->timer_token);
8677343d59SFrançois Tigeot 
87fe87864cSFrançois Tigeot static inline void
88fe87864cSFrançois Tigeot del_timer(struct timer_list *timer)
89fe87864cSFrançois Tigeot {
90fe87864cSFrançois Tigeot 	lwkt_gettoken(&(timer)->timer_token);
91fe87864cSFrançois Tigeot 	callout_stop(&(timer)->timer_callout);
92fe87864cSFrançois Tigeot 	lwkt_reltoken(&(timer)->timer_token);
93fe87864cSFrançois Tigeot 
94fe87864cSFrançois Tigeot 	lwkt_token_uninit(&(timer)->timer_token);
95fe87864cSFrançois Tigeot }
96fe87864cSFrançois Tigeot 
9777343d59SFrançois Tigeot #define	del_timer_sync(timer)	callout_drain(&(timer)->timer_callout)
9877343d59SFrançois Tigeot 
9977343d59SFrançois Tigeot #define	timer_pending(timer)	callout_pending(&(timer)->timer_callout)
10077343d59SFrançois Tigeot 
10177343d59SFrançois Tigeot static inline unsigned long
10277343d59SFrançois Tigeot round_jiffies(unsigned long j)
10377343d59SFrançois Tigeot {
10477343d59SFrançois Tigeot 	return roundup(j, hz);
10577343d59SFrançois Tigeot }
10677343d59SFrançois Tigeot 
107fe87864cSFrançois Tigeot static inline unsigned long
108fe87864cSFrançois Tigeot round_jiffies_up(unsigned long j)
109fe87864cSFrançois Tigeot {
110fe87864cSFrançois Tigeot 	return roundup(j, hz);
111fe87864cSFrançois Tigeot }
112fe87864cSFrançois Tigeot 
1137f070b26SFrançois Tigeot static inline unsigned long
1147f070b26SFrançois Tigeot round_jiffies_up_relative(unsigned long j)
1157f070b26SFrançois Tigeot {
1167f070b26SFrançois Tigeot 	return roundup(j, hz);
1177f070b26SFrançois Tigeot }
1187f070b26SFrançois Tigeot 
119*4c816622SFrançois Tigeot #define destroy_timer_on_stack(timer)
120*4c816622SFrançois Tigeot 
12177343d59SFrançois Tigeot #endif /* _LINUX_TIMER_H_ */
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