freebsd-dev/sys/compat/linuxkpi/common/include/linux/delay.h
Hans Petter Selasky ccae7bb851 Use mstosbt() instead of SBT_1MS in the LinuxKPI to get the last few bits
of precision.

MFC after:	1 week
Suggested by:	ian@
Sponsored by:	Mellanox Technologies
2018-03-03 19:26:40 +00:00

77 lines
2.3 KiB
C

/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
* Copyright (c) 2014 François Tigeot
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_DELAY_H_
#define _LINUX_DELAY_H_
#include <linux/jiffies.h>
#include <sys/systm.h>
static inline void
linux_msleep(unsigned int ms)
{
/* guard against invalid values */
if (ms == 0)
ms = 1;
pause_sbt("lnxsleep", mstosbt(ms), 0, C_HARDCLOCK);
}
#undef msleep
#define msleep(ms) linux_msleep(ms)
#undef msleep_interruptible
#define msleep_interruptible(ms) linux_msleep_interruptible(ms)
#define udelay(t) DELAY(t)
static inline void
mdelay(unsigned long msecs)
{
while (msecs--)
DELAY(1000);
}
static inline void
ndelay(unsigned long x)
{
DELAY(howmany(x, 1000));
}
static inline void
usleep_range(unsigned long min, unsigned long max)
{
DELAY(min);
}
extern unsigned int linux_msleep_interruptible(unsigned int ms);
#endif /* _LINUX_DELAY_H_ */