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 
21 asmlinkage int __raw_atomic_and_asm(volatile int *ptr, int value);
22 asmlinkage int __raw_atomic_or_asm(volatile int *ptr, int value);
23 asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
24 asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
25 
26 #define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
27 
28 #define atomic_add_return(i, v) __raw_atomic_add_asm(&(v)->counter, i)
29 #define atomic_sub_return(i, v) __raw_atomic_add_asm(&(v)->counter, -(i))
30 
31 #define atomic_or(i, v)  (void)__raw_atomic_or_asm(&(v)->counter, i)
32 #define atomic_and(i, v) (void)__raw_atomic_and_asm(&(v)->counter, i)
33 #define atomic_xor(i, v) (void)__raw_atomic_xor_asm(&(v)->counter, i)
34 
35 #endif
36 
37 #include <asm-generic/atomic.h>
38 
39 #endif
40