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 #ifdef CONFIG_SMP
11 
12 #include <linux/linkage.h>
13 
14 asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
15 asmlinkage int __raw_atomic_update_asm(volatile int *ptr, int value);
16 asmlinkage int __raw_atomic_clear_asm(volatile int *ptr, int value);
17 asmlinkage int __raw_atomic_set_asm(volatile int *ptr, int value);
18 asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
19 asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
20 
21 #define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
22 
23 #define atomic_add_return(i, v) __raw_atomic_update_asm(&(v)->counter, i)
24 #define atomic_sub_return(i, v) __raw_atomic_update_asm(&(v)->counter, -(i))
25 
26 #define atomic_clear_mask(m, v) __raw_atomic_clear_asm(&(v)->counter, m)
27 #define atomic_set_mask(m, v)   __raw_atomic_set_asm(&(v)->counter, m)
28 
29 #endif
30 
31 #include <asm-generic/atomic.h>
32 
33 #endif
34