1 /*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
13 * disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29 #ifndef _LINUXKPI_LINUX_TIMER_H_
30 #define _LINUXKPI_LINUX_TIMER_H_
31
32 #include <linux/types.h>
33
34 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/callout.h>
37
38 struct timer_list {
39 struct callout callout;
40 void (*function) (struct timer_list *);
41 unsigned long expires;
42 };
43
44 extern unsigned long linux_timer_hz_mask;
45
46 #define TIMER_IRQSAFE 0x0001
47
48 #if defined(LINUXKPI_VERSION) && (LINUXKPI_VERSION < 61600)
49 #define from_timer(var, arg, field) \
50 container_of(arg, typeof(*(var)), field)
51 #else
52 #define timer_container_of(var, arg, field) \
53 container_of(arg, typeof(*(var)), field)
54 #endif
55
56 #define timer_setup(timer, func, flags) do { \
57 CTASSERT(((flags) & ~TIMER_IRQSAFE) == 0); \
58 (timer)->function = (func); \
59 callout_init(&(timer)->callout, 1); \
60 } while (0)
61
62 extern int mod_timer(struct timer_list *, unsigned long);
63 extern void add_timer(struct timer_list *);
64 extern void add_timer_on(struct timer_list *, int cpu);
65
66 extern int timer_delete(struct timer_list *);
67 extern int timer_delete_sync(struct timer_list *);
68 extern int timer_shutdown_sync(struct timer_list *);
69
70 static inline int
del_timer(struct timer_list * tl)71 del_timer(struct timer_list *tl)
72 {
73 return (timer_delete(tl));
74 }
75
76 static inline int
del_timer_sync(struct timer_list * tl)77 del_timer_sync(struct timer_list *tl)
78 {
79 return (timer_delete_sync(tl));
80 }
81
82 #define timer_pending(timer) callout_pending(&(timer)->callout)
83 #define round_jiffies(j) \
84 ((unsigned long)(((j) + linux_timer_hz_mask) & ~linux_timer_hz_mask))
85 #define round_jiffies_relative(j) round_jiffies(j)
86 #define round_jiffies_up(j) round_jiffies(j)
87 #define round_jiffies_up_relative(j) round_jiffies_up(j)
88
89 #endif /* _LINUXKPI_LINUX_TIMER_H_ */
90