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Diffstat (limited to 'include/asm-m68k/atomic.h')
-rw-r--r--include/asm-m68k/atomic.h196
1 files changed, 0 insertions, 196 deletions
diff --git a/include/asm-m68k/atomic.h b/include/asm-m68k/atomic.h
deleted file mode 100644
index eb0ab9d4ee7..00000000000
--- a/include/asm-m68k/atomic.h
+++ /dev/null
@@ -1,196 +0,0 @@
-#ifndef __ARCH_M68K_ATOMIC__
-#define __ARCH_M68K_ATOMIC__
-
-#include <linux/types.h>
-#include <asm/system.h>
-
-/*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- */
-
-/*
- * We do not have SMP m68k systems, so we don't have to deal with that.
- */
-
-#define ATOMIC_INIT(i) { (i) }
-
-#define atomic_read(v) ((v)->counter)
-#define atomic_set(v, i) (((v)->counter) = i)
-
-static inline void atomic_add(int i, atomic_t *v)
-{
- __asm__ __volatile__("addl %1,%0" : "+m" (*v) : "id" (i));
-}
-
-static inline void atomic_sub(int i, atomic_t *v)
-{
- __asm__ __volatile__("subl %1,%0" : "+m" (*v) : "id" (i));
-}
-
-static inline void atomic_inc(atomic_t *v)
-{
- __asm__ __volatile__("addql #1,%0" : "+m" (*v));
-}
-
-static inline void atomic_dec(atomic_t *v)
-{
- __asm__ __volatile__("subql #1,%0" : "+m" (*v));
-}
-
-static inline int atomic_dec_and_test(atomic_t *v)
-{
- char c;
- __asm__ __volatile__("subql #1,%1; seq %0" : "=d" (c), "+m" (*v));
- return c != 0;
-}
-
-static inline int atomic_inc_and_test(atomic_t *v)
-{
- char c;
- __asm__ __volatile__("addql #1,%1; seq %0" : "=d" (c), "+m" (*v));
- return c != 0;
-}
-
-#ifdef CONFIG_RMW_INSNS
-
-static inline int atomic_add_return(int i, atomic_t *v)
-{
- int t, tmp;
-
- __asm__ __volatile__(
- "1: movel %2,%1\n"
- " addl %3,%1\n"
- " casl %2,%1,%0\n"
- " jne 1b"
- : "+m" (*v), "=&d" (t), "=&d" (tmp)
- : "g" (i), "2" (atomic_read(v)));
- return t;
-}
-
-static inline int atomic_sub_return(int i, atomic_t *v)
-{
- int t, tmp;
-
- __asm__ __volatile__(
- "1: movel %2,%1\n"
- " subl %3,%1\n"
- " casl %2,%1,%0\n"
- " jne 1b"
- : "+m" (*v), "=&d" (t), "=&d" (tmp)
- : "g" (i), "2" (atomic_read(v)));
- return t;
-}
-
-#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
-#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-
-#else /* !CONFIG_RMW_INSNS */
-
-static inline int atomic_add_return(int i, atomic_t * v)
-{
- unsigned long flags;
- int t;
-
- local_irq_save(flags);
- t = atomic_read(v);
- t += i;
- atomic_set(v, t);
- local_irq_restore(flags);
-
- return t;
-}
-
-static inline int atomic_sub_return(int i, atomic_t * v)
-{
- unsigned long flags;
- int t;
-
- local_irq_save(flags);
- t = atomic_read(v);
- t -= i;
- atomic_set(v, t);
- local_irq_restore(flags);
-
- return t;
-}
-
-static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
-{
- unsigned long flags;
- int prev;
-
- local_irq_save(flags);
- prev = atomic_read(v);
- if (prev == old)
- atomic_set(v, new);
- local_irq_restore(flags);
- return prev;
-}
-
-static inline int atomic_xchg(atomic_t *v, int new)
-{
- unsigned long flags;
- int prev;
-
- local_irq_save(flags);
- prev = atomic_read(v);
- atomic_set(v, new);
- local_irq_restore(flags);
- return prev;
-}
-
-#endif /* !CONFIG_RMW_INSNS */
-
-#define atomic_dec_return(v) atomic_sub_return(1, (v))
-#define atomic_inc_return(v) atomic_add_return(1, (v))
-
-static inline int atomic_sub_and_test(int i, atomic_t *v)
-{
- char c;
- __asm__ __volatile__("subl %2,%1; seq %0" : "=d" (c), "+m" (*v): "g" (i));
- return c != 0;
-}
-
-static inline int atomic_add_negative(int i, atomic_t *v)
-{
- char c;
- __asm__ __volatile__("addl %2,%1; smi %0" : "=d" (c), "+m" (*v): "g" (i));
- return c != 0;
-}
-
-static inline void atomic_clear_mask(unsigned long mask, unsigned long *v)
-{
- __asm__ __volatile__("andl %1,%0" : "+m" (*v) : "id" (~(mask)));
-}
-
-static inline void atomic_set_mask(unsigned long mask, unsigned long *v)
-{
- __asm__ __volatile__("orl %1,%0" : "+m" (*v) : "id" (mask));
-}
-
-static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
-{
- int c, old;
- c = atomic_read(v);
- for (;;) {
- if (unlikely(c == (u)))
- break;
- old = atomic_cmpxchg((v), c, c + (a));
- if (likely(old == c))
- break;
- c = old;
- }
- return c != (u);
-}
-
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-
-/* Atomic operations are already serializing */
-#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 /* __ARCH_M68K_ATOMIC __ */