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 18asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr); 19asmlinkage int __raw_atomic_add_asm(volatile int *ptr, int value); 20 21asmlinkage int __raw_atomic_and_asm(volatile int *ptr, int value); 22asmlinkage int __raw_atomic_or_asm(volatile int *ptr, int value); 23asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value); 24asmlinkage 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