include/sys/sysmacros.h

   1 #ifndef _SPL_SYSMACROS_H
   2 #define _SPL_SYSMACROS_H
   3
   4 #ifdef  __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <linux/module.h>
   9 #include <sys/debug.h>
  10 #include <sys/varargs.h>
  11 #include <sys/zone.h>
  12 #include <sys/signal.h>
  13
  14 #ifndef _KERNEL
  15 #define _KERNEL                         __KERNEL__
  16 #endif
  17
  18 /* Missing defines.
  19  */
  20 #define FALSE                           0
  21 #define TRUE                            1
  22
  23 #define INT32_MAX                       INT_MAX
  24 #define INT32_MIN                       INT_MIN
  25 #define UINT32_MAX                      UINT_MAX
  26 #define UINT32_MIN                      UINT_MIN
  27 #define INT64_MAX                       LLONG_MAX
  28 #define INT64_MIN                       LLONG_MIN
  29 #define UINT64_MAX                      ULLONG_MAX
  30 #define UINT64_MIN                      ULLONG_MIN
  31
  32 #define NBBY                            8
  33 #define ENOTSUP                         ENOTSUPP
  34
  35 #define MAXMSGLEN                       256
  36 #define MAXNAMELEN                      256
  37 #define MAXPATHLEN                      PATH_MAX
  38 #define MAXOFFSET_T                     0x7fffffffffffffffl
  39
  40 #define MAXBSIZE                        8192
  41 #define DEV_BSIZE                       512
  42 #define DEV_BSHIFT                      9 /* log2(DEV_BSIZE) */
  43
  44 #define max_ncpus                       64
  45 #define CPU_SEQID                       smp_processor_id() /* I think... */
  46 #define _NOTE(x)
  47
  48 #define RLIM64_INFINITY                 RLIM_INFINITY
  49
  50 /* 0..MAX_PRIO-1:               Process priority
  51  * 0..MAX_RT_PRIO-1:            RT priority tasks
  52  * MAX_RT_PRIO..MAX_PRIO-1:     SCHED_NORMAL tasks
  53  *
  54  * Treat shim tasks as SCHED_NORMAL tasks
  55  */
  56 #define minclsyspri                     (MAX_RT_PRIO)
  57 #define maxclsyspri                     (MAX_PRIO-1)
  58
  59 #define NICE_TO_PRIO(nice)              (MAX_RT_PRIO + (nice) + 20)
  60 #define PRIO_TO_NICE(prio)              ((prio) - MAX_RT_PRIO - 20)
  61
  62 /* Missing macros
  63  */
  64 #define PAGESIZE                        PAGE_SIZE
  65
  66 /* from Solaris sys/byteorder.h */
  67 #define BSWAP_8(x)      ((x) & 0xff)
  68 #define BSWAP_16(x)     ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
  69 #define BSWAP_32(x)     ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
  70 #define BSWAP_64(x)     ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
  71
  72 /* Map some simple functions.
  73  */
  74 #define bzero(ptr,size)                 memset(ptr,0,size)
  75 #define bcopy(src,dest,size)            memcpy(dest,src,size)
  76 #define bcmp(src,dest,size)             memcmp((src), (dest), (size_t)(size))
  77
  78 /* Dtrace probes do not exist in the linux kernel */
  79
  80 #ifdef DTRACE_PROBE1
  81 #undef  DTRACE_PROBE1
  82 #endif  /* DTRACE_PROBE1 */
  83 #define DTRACE_PROBE1(a, b, c)                          ((void)0)
  84
  85 #ifdef DTRACE_PROBE2
  86 #undef  DTRACE_PROBE2
  87 #endif  /* DTRACE_PROBE2 */
  88 #define DTRACE_PROBE2(a, b, c, d, e)                    ((void)0)
  89
  90 #ifdef DTRACE_PROBE3
  91 #undef  DTRACE_PROBE3
  92 #endif  /* DTRACE_PROBE3 */
  93 #define DTRACE_PROBE3(a, b, c, d, e, f, g)              ((void)0)
  94
  95 #ifdef DTRACE_PROBE4
  96 #undef  DTRACE_PROBE4
  97 #endif  /* DTRACE_PROBE4 */
  98 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)        ((void)0)
  99
 100 /* Missing globals */
 101 extern long spl_hostid;
 102 extern char hw_serial[11];
 103 extern int p0;
 104
 105 /* Missing misc functions */
 106 extern int highbit(unsigned long i);
 107 extern int ddi_strtoul(const char *str, char **nptr,
 108                        int base, unsigned long *result);
 109
 110 #define makedevice(maj,min) makedev(maj,min)
 111
 112 /* common macros */
 113 #ifndef MIN
 114 #define MIN(a, b)       ((a) < (b) ? (a) : (b))
 115 #endif
 116 #ifndef MAX
 117 #define MAX(a, b)       ((a) < (b) ? (b) : (a))
 118 #endif
 119 #ifndef ABS
 120 #define ABS(a)          ((a) < 0 ? -(a) : (a))
 121 #endif
 122
 123 /*
 124  * Compatibility macros/typedefs needed for Solaris -> Linux port
 125  */
 126 #define P2ALIGN(x, align)    ((x) & -(align))
 127 #define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
 128 #define P2ROUNDUP(x, align)  (-(-(x) & -(align)))
 129 #define P2ROUNDUP_TYPED(x, align, type) \
 130                              (-(-(type)(x) & -(type)(align)))
 131 #define P2PHASE(x, align)    ((x) & ((align) - 1))
 132 #define P2NPHASE(x, align)   (-(x) & ((align) - 1))
 133 #define P2NPHASE_TYPED(x, align, type) \
 134                              (-(type)(x) & ((type)(align) - 1))
 135 #define ISP2(x)              (((x) & ((x) - 1)) == 0)
 136 #define IS_P2ALIGNED(v, a)   ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
 137
 138 /*
 139  * Typed version of the P2* macros.  These macros should be used to ensure
 140  * that the result is correctly calculated based on the data type of (x),
 141  * which is passed in as the last argument, regardless of the data
 142  * type of the alignment.  For example, if (x) is of type uint64_t,
 143  * and we want to round it up to a page boundary using "PAGESIZE" as
 144  * the alignment, we can do either
 145  * P2ROUNDUP(x, (uint64_t)PAGESIZE)
 146  * or
 147  * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
 148  */
 149 #define P2ALIGN_TYPED(x, align, type)   \
 150         ((type)(x) & -(type)(align))
 151 #define P2PHASE_TYPED(x, align, type)   \
 152         ((type)(x) & ((type)(align) - 1))
 153 #define P2NPHASE_TYPED(x, align, type)  \
 154         (-(type)(x) & ((type)(align) - 1))
 155 #define P2ROUNDUP_TYPED(x, align, type) \
 156         (-(-(type)(x) & -(type)(align)))
 157 #define P2END_TYPED(x, align, type)     \
 158         (-(~(type)(x) & -(type)(align)))
 159 #define P2PHASEUP_TYPED(x, align, phase, type)  \
 160         ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
 161 #define P2CROSS_TYPED(x, y, align, type)        \
 162         (((type)(x) ^ (type)(y)) > (type)(align) - 1)
 163 #define P2SAMEHIGHBIT_TYPED(x, y, type) \
 164         (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
 165
 166 #if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
 167
 168 /* avoid any possibility of clashing with <stddef.h> version */
 169
 170 #define offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
 171 #endif
 172
 173 #ifdef  __cplusplus
 174 }
 175 #endif
 176
 177 #endif  /* _SPL_SYSMACROS_H */