From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/blackfin/include/asm/atomic.h | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 arch/blackfin/include/asm/atomic.h

(limited to 'arch/blackfin/include/asm/atomic.h')

diff --git a/arch/blackfin/include/asm/atomic.h b/arch/blackfin/include/asm/atomic.h
new file mode 100644
index 000000000..a107a98e9
--- /dev/null
+++ b/arch/blackfin/include/asm/atomic.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2004-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ARCH_BLACKFIN_ATOMIC__
+#define __ARCH_BLACKFIN_ATOMIC__
+
+#include <asm/cmpxchg.h>
+
+#ifdef CONFIG_SMP
+
+#include <asm/barrier.h>
+#include <linux/linkage.h>
+#include <linux/types.h>
+
+asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
+asmlinkage int __raw_atomic_update_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_clear_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_set_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
+asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
+
+#define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
+
+#define atomic_add_return(i, v) __raw_atomic_update_asm(&(v)->counter, i)
+#define atomic_sub_return(i, v) __raw_atomic_update_asm(&(v)->counter, -(i))
+
+#define atomic_clear_mask(m, v) __raw_atomic_clear_asm(&(v)->counter, m)
+#define atomic_set_mask(m, v)   __raw_atomic_set_asm(&(v)->counter, m)
+
+#endif
+
+#include <asm-generic/atomic.h>
+
+#endif
-- 
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