1219820Sjeff/*- 2219820Sjeff * Copyright (c) 2010 Isilon Systems, Inc. 3219820Sjeff * Copyright (c) 2010 iX Systems, Inc. 4219820Sjeff * Copyright (c) 2010 Panasas, Inc. 5271127Shselasky * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6219820Sjeff * All rights reserved. 7219820Sjeff * 8219820Sjeff * Redistribution and use in source and binary forms, with or without 9219820Sjeff * modification, are permitted provided that the following conditions 10219820Sjeff * are met: 11219820Sjeff * 1. Redistributions of source code must retain the above copyright 12219820Sjeff * notice unmodified, this list of conditions, and the following 13219820Sjeff * disclaimer. 14219820Sjeff * 2. Redistributions in binary form must reproduce the above copyright 15219820Sjeff * notice, this list of conditions and the following disclaimer in the 16219820Sjeff * documentation and/or other materials provided with the distribution. 17219820Sjeff * 18219820Sjeff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19219820Sjeff * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20219820Sjeff * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21219820Sjeff * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22219820Sjeff * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23219820Sjeff * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24219820Sjeff * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25219820Sjeff * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26219820Sjeff * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27219820Sjeff * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28219820Sjeff */ 29219820Sjeff#ifndef _LINUX_KERNEL_H_ 30219820Sjeff#define _LINUX_KERNEL_H_ 31219820Sjeff 32282513Shselasky#include <sys/cdefs.h> 33282513Shselasky#include <sys/types.h> 34219820Sjeff#include <sys/systm.h> 35219820Sjeff#include <sys/param.h> 36219820Sjeff#include <sys/libkern.h> 37219820Sjeff#include <sys/stat.h> 38219820Sjeff#include <sys/smp.h> 39271127Shselasky#include <sys/stddef.h> 40277139Shselasky#include <sys/syslog.h> 41219820Sjeff 42219820Sjeff#include <linux/bitops.h> 43219820Sjeff#include <linux/compiler.h> 44219820Sjeff#include <linux/errno.h> 45219820Sjeff#include <linux/kthread.h> 46219820Sjeff#include <linux/types.h> 47219820Sjeff#include <linux/jiffies.h> 48219820Sjeff#include <linux/wait.h> 49271127Shselasky#include <linux/log2.h> 50219820Sjeff#include <asm/byteorder.h> 51219820Sjeff 52255932Salfred#define KERN_CONT "" 53219820Sjeff#define KERN_EMERG "<0>" 54219820Sjeff#define KERN_ALERT "<1>" 55219820Sjeff#define KERN_CRIT "<2>" 56219820Sjeff#define KERN_ERR "<3>" 57219820Sjeff#define KERN_WARNING "<4>" 58219820Sjeff#define KERN_NOTICE "<5>" 59219820Sjeff#define KERN_INFO "<6>" 60219820Sjeff#define KERN_DEBUG "<7>" 61219820Sjeff 62282513Shselasky#define BUILD_BUG_ON(x) CTASSERT(!(x)) 63282513Shselasky 64219820Sjeff#define BUG() panic("BUG") 65219820Sjeff#define BUG_ON(condition) do { if (condition) BUG(); } while(0) 66219820Sjeff#define WARN_ON BUG_ON 67219820Sjeff 68219820Sjeff#undef ALIGN 69219820Sjeff#define ALIGN(x, y) roundup2((x), (y)) 70279737Shselasky#undef PTR_ALIGN 71279737Shselasky#define PTR_ALIGN(p, a) ((__typeof(p))ALIGN((uintptr_t)(p), (a))) 72219820Sjeff#define DIV_ROUND_UP howmany 73282513Shselasky#define FIELD_SIZEOF(t, f) sizeof(((t *)0)->f) 74219820Sjeff 75219820Sjeff#define printk(X...) printf(X) 76277139Shselasky 77277139Shselasky/* 78277139Shselasky * The "pr_debug()" and "pr_devel()" macros should produce zero code 79277139Shselasky * unless DEBUG is defined: 80277139Shselasky */ 81277139Shselasky#ifdef DEBUG 82277139Shselasky#define pr_debug(fmt, ...) \ 83277139Shselasky log(LOG_DEBUG, fmt, ##__VA_ARGS__) 84277139Shselasky#define pr_devel(fmt, ...) \ 85277139Shselasky log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__) 86277139Shselasky#else 87277139Shselasky#define pr_debug(fmt, ...) \ 88277139Shselasky ({ if (0) log(LOG_DEBUG, fmt, ##__VA_ARGS__); 0; }) 89277139Shselasky#define pr_devel(fmt, ...) \ 90277139Shselasky ({ if (0) log(LOG_DEBUG, pr_fmt(fmt), ##__VA_ARGS__); 0; }) 91277139Shselasky#endif 92277139Shselasky 93219820Sjeff#define udelay(t) DELAY(t) 94282513Shselasky#define usleep_range(min,max) DELAY(min) 95219820Sjeff 96255932Salfred#ifndef pr_fmt 97255932Salfred#define pr_fmt(fmt) fmt 98255932Salfred#endif 99255932Salfred 100255932Salfred/* 101255932Salfred * Print a one-time message (analogous to WARN_ONCE() et al): 102255932Salfred */ 103277139Shselasky#define printk_once(...) do { \ 104277139Shselasky static bool __print_once; \ 105277139Shselasky \ 106277139Shselasky if (!__print_once) { \ 107277139Shselasky __print_once = true; \ 108277139Shselasky printk(__VA_ARGS__); \ 109277139Shselasky } \ 110277139Shselasky} while (0) 111255932Salfred 112277139Shselasky/* 113277139Shselasky * Log a one-time message (analogous to WARN_ONCE() et al): 114277139Shselasky */ 115277139Shselasky#define log_once(level,...) do { \ 116277139Shselasky static bool __log_once; \ 117277139Shselasky \ 118277139Shselasky if (!__log_once) { \ 119277139Shselasky __log_once = true; \ 120277139Shselasky log(level, __VA_ARGS__); \ 121277139Shselasky } \ 122277139Shselasky} while (0) 123255932Salfred 124255932Salfred#define pr_emerg(fmt, ...) \ 125277139Shselasky log(LOG_EMERG, pr_fmt(fmt), ##__VA_ARGS__) 126255932Salfred#define pr_alert(fmt, ...) \ 127277139Shselasky log(LOG_ALERT, pr_fmt(fmt), ##__VA_ARGS__) 128255932Salfred#define pr_crit(fmt, ...) \ 129277139Shselasky log(LOG_CRIT, pr_fmt(fmt), ##__VA_ARGS__) 130255932Salfred#define pr_err(fmt, ...) \ 131277139Shselasky log(LOG_ERR, pr_fmt(fmt), ##__VA_ARGS__) 132255932Salfred#define pr_warning(fmt, ...) \ 133277139Shselasky log(LOG_WARNING, pr_fmt(fmt), ##__VA_ARGS__) 134255932Salfred#define pr_warn pr_warning 135255932Salfred#define pr_notice(fmt, ...) \ 136277139Shselasky log(LOG_NOTICE, pr_fmt(fmt), ##__VA_ARGS__) 137255932Salfred#define pr_info(fmt, ...) \ 138277139Shselasky log(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__) 139271127Shselasky#define pr_info_once(fmt, ...) \ 140277139Shselasky log_once(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__) 141255932Salfred#define pr_cont(fmt, ...) \ 142277139Shselasky printk(KERN_CONT fmt, ##__VA_ARGS__) 143255932Salfred 144255932Salfred#ifndef WARN 145255932Salfred#define WARN(condition, format...) ({ \ 146255932Salfred int __ret_warn_on = !!(condition); \ 147255932Salfred if (unlikely(__ret_warn_on)) \ 148255932Salfred pr_warning(format); \ 149255932Salfred unlikely(__ret_warn_on); \ 150255932Salfred}) 151255932Salfred#endif 152255932Salfred 153219820Sjeff#define container_of(ptr, type, member) \ 154219820Sjeff({ \ 155219820Sjeff __typeof(((type *)0)->member) *_p = (ptr); \ 156219820Sjeff (type *)((char *)_p - offsetof(type, member)); \ 157219820Sjeff}) 158219820Sjeff 159219820Sjeff#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 160219820Sjeff 161219820Sjeff#define simple_strtoul strtoul 162255932Salfred#define simple_strtol strtol 163271127Shselasky#define kstrtol(a,b,c) ({*(c) = strtol(a,0,b);}) 164219820Sjeff 165277139Shselasky#define min(x, y) ((x) < (y) ? (x) : (y)) 166277139Shselasky#define max(x, y) ((x) > (y) ? (x) : (y)) 167277139Shselasky#define min_t(type, _x, _y) ((type)(_x) < (type)(_y) ? (type)(_x) : (type)(_y)) 168277139Shselasky#define max_t(type, _x, _y) ((type)(_x) > (type)(_y) ? (type)(_x) : (type)(_y)) 169219820Sjeff 170255932Salfred/* 171255932Salfred * This looks more complex than it should be. But we need to 172255932Salfred * get the type for the ~ right in round_down (it needs to be 173255932Salfred * as wide as the result!), and we want to evaluate the macro 174255932Salfred * arguments just once each. 175255932Salfred */ 176255932Salfred#define __round_mask(x, y) ((__typeof__(x))((y)-1)) 177255932Salfred#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) 178255932Salfred#define round_down(x, y) ((x) & ~__round_mask(x, y)) 179255932Salfred 180219820Sjeff#define num_possible_cpus() mp_ncpus 181282513Shselasky#define num_online_cpus() mp_ncpus 182219820Sjeff 183255932Salfredtypedef struct pm_message { 184255932Salfred int event; 185255932Salfred} pm_message_t; 186255932Salfred 187219820Sjeff#endif /* _LINUX_KERNEL_H_ */ 188