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_update_asm(volatile int *ptr, int value); 20asmlinkage int __raw_atomic_clear_asm(volatile int *ptr, int value); 21asmlinkage int __raw_atomic_set_asm(volatile int *ptr, int value); 22asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value); 23asmlinkage 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