1 /*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
6 * Copyright (c) 2014 François Tigeot
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice unmodified, this list of conditions, and the following
14 * disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * $FreeBSD$
31 */
32 #ifndef _LINUXKPI_LINUX_DELAY_H_
33 #define _LINUXKPI_LINUX_DELAY_H_
34
35 #include <linux/jiffies.h>
36 #include <sys/systm.h>
37
38 static inline void
linux_msleep(unsigned int ms)39 linux_msleep(unsigned int ms)
40 {
41 /* guard against invalid values */
42 if (ms == 0)
43 ms = 1;
44 pause_sbt("lnxsleep", mstosbt(ms), 0, C_HARDCLOCK);
45 }
46
47 #undef msleep
48 #define msleep(ms) linux_msleep(ms)
49
50 #undef msleep_interruptible
51 #define msleep_interruptible(ms) linux_msleep_interruptible(ms)
52
53 #define udelay(t) DELAY(t)
54
55 static inline void
mdelay(unsigned long msecs)56 mdelay(unsigned long msecs)
57 {
58 while (msecs--)
59 DELAY(1000);
60 }
61
62 static inline void
ndelay(unsigned long x)63 ndelay(unsigned long x)
64 {
65 DELAY(howmany(x, 1000));
66 }
67
68 static inline void
usleep_range(unsigned long min,unsigned long max)69 usleep_range(unsigned long min, unsigned long max)
70 {
71 DELAY(min);
72 }
73
74 extern unsigned int linux_msleep_interruptible(unsigned int ms);
75
76 static inline void
fsleep(unsigned long us)77 fsleep(unsigned long us)
78 {
79
80 if (us < 10)
81 udelay(us);
82 else
83 usleep_range(us, us);
84 }
85
86 #endif /* _LINUXKPI_LINUX_DELAY_H_ */
87