arch/blackfin/include/asm/atomic.h

   1 /*
   2  * Copyright 2004-2011 Analog Devices Inc.
   3  *
   4  * Licensed under the GPL-2 or later.
   5  */
   6
   7 #ifndef __ARCH_BLACKFIN_ATOMIC__
   8 #define __ARCH_BLACKFIN_ATOMIC__
   9
  10 #include <asm/cmpxchg.h>
  11
  12 #ifdef CONFIG_SMP
  13
  14 #include <asm/barrier.h>
  15 #include <linux/linkage.h>
  16 #include <linux/types.h>
  17
  18 asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
  19 asmlinkage int __raw_atomic_add_asm(volatile int *ptr, int value);
  20 asmlinkage int __raw_atomic_xadd_asm(volatile int *ptr, int value);
  21
  22 asmlinkage int __raw_atomic_and_asm(volatile int *ptr, int value);
  23 asmlinkage int __raw_atomic_or_asm(volatile int *ptr, int value);
  24 asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
  25 asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
  26
  27 #define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
  28
  29 #define atomic_add_return(i, v) __raw_atomic_add_asm(&(v)->counter, i)
  30 #define atomic_sub_return(i, v) __raw_atomic_add_asm(&(v)->counter, -(i))
  31
  32 #define atomic_fetch_add(i, v) __raw_atomic_xadd_asm(&(v)->counter, i)
  33 #define atomic_fetch_sub(i, v) __raw_atomic_xadd_asm(&(v)->counter, -(i))
  34
  35 #define atomic_or(i, v)  (void)__raw_atomic_or_asm(&(v)->counter, i)
  36 #define atomic_and(i, v) (void)__raw_atomic_and_asm(&(v)->counter, i)
  37 #define atomic_xor(i, v) (void)__raw_atomic_xor_asm(&(v)->counter, i)
  38
  39 #define atomic_fetch_or(i, v)  __raw_atomic_or_asm(&(v)->counter, i)
  40 #define atomic_fetch_and(i, v) __raw_atomic_and_asm(&(v)->counter, i)
  41 #define atomic_fetch_xor(i, v) __raw_atomic_xor_asm(&(v)->counter, i)
  42
  43 #endif
  44
  45 #include <asm-generic/atomic.h>
  46
  47 #endif