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 union {
41 void (*function) (unsigned long); /* < v4.15 */
42 void (*function_415) (struct timer_list *);
43 };
44 unsigned long data;
45 unsigned long expires;
46 };
47
48 extern unsigned long linux_timer_hz_mask;
49
50 #define TIMER_IRQSAFE 0x0001
51
52 #if defined(LINUXKPI_VERSION) && (LINUXKPI_VERSION < 61600)
53 #define from_timer(var, arg, field) \
54 container_of(arg, typeof(*(var)), field)
55 #else
56 #define timer_container_of(var, arg, field) \
57 container_of(arg, typeof(*(var)), field)
58 #endif
59
60 #define timer_setup(timer, func, flags) do { \
61 CTASSERT(((flags) & ~TIMER_IRQSAFE) == 0); \
62 (timer)->function_415 = (func); \
63 (timer)->data = (unsigned long)(timer); \
64 callout_init(&(timer)->callout, 1); \
65 } while (0)
66
67 #define setup_timer(timer, func, dat) do { \
68 (timer)->function = (func); \
69 (timer)->data = (dat); \
70 callout_init(&(timer)->callout, 1); \
71 } while (0)
72
73 #define __setup_timer(timer, func, dat, flags) do { \
74 CTASSERT(((flags) & ~TIMER_IRQSAFE) == 0); \
75 setup_timer(timer, func, dat); \
76 } while (0)
77
78 #define init_timer(timer) do { \
79 (timer)->function = NULL; \
80 (timer)->data = 0; \
81 callout_init(&(timer)->callout, 1); \
82 } while (0)
83
84 extern int mod_timer(struct timer_list *, unsigned long);
85 extern void add_timer(struct timer_list *);
86 extern void add_timer_on(struct timer_list *, int cpu);
87
88 extern int timer_delete(struct timer_list *);
89 extern int timer_delete_sync(struct timer_list *);
90 extern int timer_shutdown_sync(struct timer_list *);
91
92 static inline int
del_timer(struct timer_list * tl)93 del_timer(struct timer_list *tl)
94 {
95 return (timer_delete(tl));
96 }
97
98 static inline int
del_timer_sync(struct timer_list * tl)99 del_timer_sync(struct timer_list *tl)
100 {
101 return (timer_delete_sync(tl));
102 }
103
104 #define timer_pending(timer) callout_pending(&(timer)->callout)
105 #define round_jiffies(j) \
106 ((unsigned long)(((j) + linux_timer_hz_mask) & ~linux_timer_hz_mask))
107 #define round_jiffies_relative(j) round_jiffies(j)
108 #define round_jiffies_up(j) round_jiffies(j)
109 #define round_jiffies_up_relative(j) round_jiffies_up(j)
110
111 #endif /* _LINUXKPI_LINUX_TIMER_H_ */
112