1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2021 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 #ifndef _LINUXKPI_LINUX_DELAY_H_ 31 #define _LINUXKPI_LINUX_DELAY_H_ 32 33 #include <linux/jiffies.h> 34 #include <sys/systm.h> 35 36 static inline void 37 linux_msleep(unsigned int ms) 38 { 39 /* guard against invalid values */ 40 if (ms == 0) 41 ms = 1; 42 pause_sbt("lnxsleep", mstosbt(ms), 0, C_HARDCLOCK); 43 } 44 45 #undef msleep 46 #define msleep(ms) linux_msleep(ms) 47 48 #undef msleep_interruptible 49 #define msleep_interruptible(ms) linux_msleep_interruptible(ms) 50 51 #define udelay(t) DELAY(t) 52 53 static inline void 54 mdelay(unsigned long msecs) 55 { 56 while (msecs--) 57 DELAY(1000); 58 } 59 60 static inline void 61 ndelay(unsigned long x) 62 { 63 DELAY(howmany(x, 1000)); 64 } 65 66 static inline void 67 usleep_range(unsigned long min, unsigned long max) 68 { 69 /* guard against invalid values */ 70 if (min == 0) 71 min = 1; 72 pause_sbt("lnxsleep", ustosbt(min), 0, C_HARDCLOCK); 73 } 74 75 extern unsigned int linux_msleep_interruptible(unsigned int ms); 76 77 static inline void 78 fsleep(unsigned long us) 79 { 80 81 if (us < 10) 82 udelay(us); 83 else 84 usleep_range(us, us); 85 } 86 87 #endif /* _LINUXKPI_LINUX_DELAY_H_ */ 88