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_update_asm(volatile int *ptr, int value);
20 asmlinkage int __raw_atomic_clear_asm(volatile int *ptr, int value);
21 asmlinkage int __raw_atomic_set_asm(volatile int *ptr, int value);
22 asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
23 asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
24 
25 #define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
26 
27 #define atomic_add_return(i, v) __raw_atomic_update_asm(&(v)->counter, i)
28 #define atomic_sub_return(i, v) __raw_atomic_update_asm(&(v)->counter, -(i))
29 
30 #define atomic_clear_mask(m, v) __raw_atomic_clear_asm(&(v)->counter, m)
31 #define atomic_set_mask(m, v)   __raw_atomic_set_asm(&(v)->counter, m)
32 
33 #endif
34 
35 #include <asm-generic/atomic.h>
36 
37 #endif
38