summaryrefslogtreecommitdiffstats
path: root/include/asm-sh64/atomic.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-sh64/atomic.h')
-rw-r--r--include/asm-sh64/atomic.h158
1 files changed, 0 insertions, 158 deletions
diff --git a/include/asm-sh64/atomic.h b/include/asm-sh64/atomic.h
deleted file mode 100644
index 28f2ea9b567..00000000000
--- a/include/asm-sh64/atomic.h
+++ /dev/null
@@ -1,158 +0,0 @@
-#ifndef __ASM_SH64_ATOMIC_H
-#define __ASM_SH64_ATOMIC_H
-
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * include/asm-sh64/atomic.h
- *
- * Copyright (C) 2000, 2001 Paolo Alberelli
- * Copyright (C) 2003 Paul Mundt
- *
- */
-
-/*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- *
- */
-
-typedef struct { volatile int counter; } atomic_t;
-
-#define ATOMIC_INIT(i) ( (atomic_t) { (i) } )
-
-#define atomic_read(v) ((v)->counter)
-#define atomic_set(v,i) ((v)->counter = (i))
-
-#include <asm/system.h>
-
-/*
- * To get proper branch prediction for the main line, we must branch
- * forward to code at the end of this object's .text section, then
- * branch back to restart the operation.
- */
-
-static __inline__ void atomic_add(int i, atomic_t * v)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- *(long *)v += i;
- local_irq_restore(flags);
-}
-
-static __inline__ void atomic_sub(int i, atomic_t *v)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- *(long *)v -= i;
- local_irq_restore(flags);
-}
-
-static __inline__ int atomic_add_return(int i, atomic_t * v)
-{
- unsigned long temp, flags;
-
- local_irq_save(flags);
- temp = *(long *)v;
- temp += i;
- *(long *)v = temp;
- local_irq_restore(flags);
-
- return temp;
-}
-
-#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
-
-static __inline__ int atomic_sub_return(int i, atomic_t * v)
-{
- unsigned long temp, flags;
-
- local_irq_save(flags);
- temp = *(long *)v;
- temp -= i;
- *(long *)v = temp;
- local_irq_restore(flags);
-
- return temp;
-}
-
-#define atomic_dec_return(v) atomic_sub_return(1,(v))
-#define atomic_inc_return(v) atomic_add_return(1,(v))
-
-/*
- * atomic_inc_and_test - increment and test
- * @v: pointer of type atomic_t
- *
- * Atomically increments @v by 1
- * and returns true if the result is zero, or false for all
- * other cases.
- */
-#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
-
-#define atomic_sub_and_test(i,v) (atomic_sub_return((i), (v)) == 0)
-#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
-
-#define atomic_inc(v) atomic_add(1,(v))
-#define atomic_dec(v) atomic_sub(1,(v))
-
-static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
-{
- int ret;
- unsigned long flags;
-
- local_irq_save(flags);
- ret = v->counter;
- if (likely(ret == old))
- v->counter = new;
- local_irq_restore(flags);
-
- return ret;
-}
-
-#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-
-static inline int atomic_add_unless(atomic_t *v, int a, int u)
-{
- int ret;
- unsigned long flags;
-
- local_irq_save(flags);
- ret = v->counter;
- if (ret != u)
- v->counter += a;
- local_irq_restore(flags);
-
- return ret != u;
-}
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-
-static __inline__ void atomic_clear_mask(unsigned int mask, atomic_t *v)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- *(long *)v &= ~mask;
- local_irq_restore(flags);
-}
-
-static __inline__ void atomic_set_mask(unsigned int mask, atomic_t *v)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- *(long *)v |= mask;
- local_irq_restore(flags);
-}
-
-/* Atomic operations are already serializing on SH */
-#define smp_mb__before_atomic_dec() barrier()
-#define smp_mb__after_atomic_dec() barrier()
-#define smp_mb__before_atomic_inc() barrier()
-#define smp_mb__after_atomic_inc() barrier()
-
-#include <asm-generic/atomic.h>
-#endif /* __ASM_SH64_ATOMIC_H */