arch/blackfin/include/asm/bitops.h

   1 /*
   2  * Copyright 2004-2009 Analog Devices Inc.
   3  *
   4  * Licensed under the GPL-2 or later.
   5  */
   6
   7 #ifndef _BLACKFIN_BITOPS_H
   8 #define _BLACKFIN_BITOPS_H
   9
  10 #ifndef CONFIG_SMP
  11 # include <asm-generic/bitops.h>
  12 #else
  13
  14 #ifndef _LINUX_BITOPS_H
  15 #error only <linux/bitops.h> can be included directly
  16 #endif
  17
  18 #include <linux/compiler.h>
  19 #include <asm/byteorder.h>      /* swab32 */
  20
  21 #include <asm-generic/bitops/ffs.h>
  22 #include <asm-generic/bitops/__ffs.h>
  23 #include <asm-generic/bitops/sched.h>
  24 #include <asm-generic/bitops/ffz.h>
  25
  26 #include <linux/linkage.h>
  27
  28 asmlinkage int __raw_bit_set_asm(volatile unsigned long *addr, int nr);
  29
  30 asmlinkage int __raw_bit_clear_asm(volatile unsigned long *addr, int nr);
  31
  32 asmlinkage int __raw_bit_toggle_asm(volatile unsigned long *addr, int nr);
  33
  34 asmlinkage int __raw_bit_test_set_asm(volatile unsigned long *addr, int nr);
  35
  36 asmlinkage int __raw_bit_test_clear_asm(volatile unsigned long *addr, int nr);
  37
  38 asmlinkage int __raw_bit_test_toggle_asm(volatile unsigned long *addr, int nr);
  39
  40 asmlinkage int __raw_bit_test_asm(const volatile unsigned long *addr, int nr);
  41
  42 static inline void set_bit(int nr, volatile unsigned long *addr)
  43 {
  44         volatile unsigned long *a = addr + (nr >> 5);
  45         __raw_bit_set_asm(a, nr & 0x1f);
  46 }
  47
  48 static inline void clear_bit(int nr, volatile unsigned long *addr)
  49 {
  50         volatile unsigned long *a = addr + (nr >> 5);
  51         __raw_bit_clear_asm(a, nr & 0x1f);
  52 }
  53
  54 static inline void change_bit(int nr, volatile unsigned long *addr)
  55 {
  56         volatile unsigned long *a = addr + (nr >> 5);
  57         __raw_bit_toggle_asm(a, nr & 0x1f);
  58 }
  59
  60 static inline int test_bit(int nr, const volatile unsigned long *addr)
  61 {
  62         volatile const unsigned long *a = addr + (nr >> 5);
  63         return __raw_bit_test_asm(a, nr & 0x1f) != 0;
  64 }
  65
  66 static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
  67 {
  68         volatile unsigned long *a = addr + (nr >> 5);
  69         return __raw_bit_test_set_asm(a, nr & 0x1f);
  70 }
  71
  72 static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
  73 {
  74         volatile unsigned long *a = addr + (nr >> 5);
  75         return __raw_bit_test_clear_asm(a, nr & 0x1f);
  76 }
  77
  78 static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
  79 {
  80         volatile unsigned long *a = addr + (nr >> 5);
  81         return __raw_bit_test_toggle_asm(a, nr & 0x1f);
  82 }
  83
  84 /*
  85  * clear_bit() doesn't provide any barrier for the compiler.
  86  */
  87 #define smp_mb__before_clear_bit()      barrier()
  88 #define smp_mb__after_clear_bit()       barrier()
  89
  90 #include <asm-generic/bitops/non-atomic.h>
  91
  92 #include <asm-generic/bitops/find.h>
  93 #include <asm-generic/bitops/hweight.h>
  94 #include <asm-generic/bitops/lock.h>
  95
  96 #include <asm-generic/bitops/ext2-atomic.h>
  97 #include <asm-generic/bitops/ext2-non-atomic.h>
  98
  99 #include <asm-generic/bitops/minix.h>
 100
 101 #include <asm-generic/bitops/fls.h>
 102 #include <asm-generic/bitops/__fls.h>
 103 #include <asm-generic/bitops/fls64.h>
 104
 105 #endif /* CONFIG_SMP */
 106
 107 #endif                          /* _BLACKFIN_BITOPS_H */