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 48