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-rw-r--r--include/asm-powerpc/atomic.h408
1 files changed, 0 insertions, 408 deletions
diff --git a/include/asm-powerpc/atomic.h b/include/asm-powerpc/atomic.h
deleted file mode 100644
index 147a38dcc76..00000000000
--- a/include/asm-powerpc/atomic.h
+++ /dev/null
@@ -1,408 +0,0 @@
-#ifndef _ASM_POWERPC_ATOMIC_H_
-#define _ASM_POWERPC_ATOMIC_H_
-
-/*
- * PowerPC atomic operations
- */
-
-typedef struct { volatile int counter; } atomic_t;
-
-#ifdef __KERNEL__
-#include <asm/synch.h>
-#include <asm/asm-compat.h>
-
-#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 a, atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
-"1: lwarx %0,0,%3 # atomic_add\n\
- add %0,%2,%0\n"
- PPC405_ERR77(0,%3)
-" stwcx. %0,0,%3 \n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (a), "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ int atomic_add_return(int a, atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: lwarx %0,0,%2 # atomic_add_return\n\
- add %0,%1,%0\n"
- PPC405_ERR77(0,%2)
-" stwcx. %0,0,%2 \n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (a), "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
-
-static __inline__ void atomic_sub(int a, atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
-"1: lwarx %0,0,%3 # atomic_sub\n\
- subf %0,%2,%0\n"
- PPC405_ERR77(0,%3)
-" stwcx. %0,0,%3 \n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (a), "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ int atomic_sub_return(int a, atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: lwarx %0,0,%2 # atomic_sub_return\n\
- subf %0,%1,%0\n"
- PPC405_ERR77(0,%2)
-" stwcx. %0,0,%2 \n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (a), "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-static __inline__ void atomic_inc(atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
-"1: lwarx %0,0,%2 # atomic_inc\n\
- addic %0,%0,1\n"
- PPC405_ERR77(0,%2)
-" stwcx. %0,0,%2 \n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ int atomic_inc_return(atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: lwarx %0,0,%1 # atomic_inc_return\n\
- addic %0,%0,1\n"
- PPC405_ERR77(0,%1)
-" stwcx. %0,0,%1 \n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-/*
- * 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)
-
-static __inline__ void atomic_dec(atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
-"1: lwarx %0,0,%2 # atomic_dec\n\
- addic %0,%0,-1\n"
- PPC405_ERR77(0,%2)\
-" stwcx. %0,0,%2\n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ int atomic_dec_return(atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: lwarx %0,0,%1 # atomic_dec_return\n\
- addic %0,%0,-1\n"
- PPC405_ERR77(0,%1)
-" stwcx. %0,0,%1\n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
-#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-
-/**
- * atomic_add_unless - add unless the number is a given value
- * @v: pointer of type atomic_t
- * @a: the amount to add to v...
- * @u: ...unless v is equal to u.
- *
- * Atomically adds @a to @v, so long as it was not @u.
- * Returns non-zero if @v was not @u, and zero otherwise.
- */
-#define atomic_add_unless(v, a, 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; \
- } \
- c != (u); \
-})
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-
-#define atomic_sub_and_test(a, v) (atomic_sub_return((a), (v)) == 0)
-#define atomic_dec_and_test(v) (atomic_dec_return((v)) == 0)
-
-/*
- * Atomically test *v and decrement if it is greater than 0.
- * The function returns the old value of *v minus 1.
- */
-static __inline__ int atomic_dec_if_positive(atomic_t *v)
-{
- int t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: lwarx %0,0,%1 # atomic_dec_if_positive\n\
- addic. %0,%0,-1\n\
- blt- 2f\n"
- PPC405_ERR77(0,%1)
-" stwcx. %0,0,%1\n\
- bne- 1b"
- ISYNC_ON_SMP
- "\n\
-2:" : "=&r" (t)
- : "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-#define smp_mb__before_atomic_dec() smp_mb()
-#define smp_mb__after_atomic_dec() smp_mb()
-#define smp_mb__before_atomic_inc() smp_mb()
-#define smp_mb__after_atomic_inc() smp_mb()
-
-#ifdef __powerpc64__
-
-typedef struct { volatile long counter; } atomic64_t;
-
-#define ATOMIC64_INIT(i) { (i) }
-
-#define atomic64_read(v) ((v)->counter)
-#define atomic64_set(v,i) (((v)->counter) = (i))
-
-static __inline__ void atomic64_add(long a, atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
-"1: ldarx %0,0,%3 # atomic64_add\n\
- add %0,%2,%0\n\
- stdcx. %0,0,%3 \n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (a), "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ long atomic64_add_return(long a, atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: ldarx %0,0,%2 # atomic64_add_return\n\
- add %0,%1,%0\n\
- stdcx. %0,0,%2 \n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (a), "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-#define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0)
-
-static __inline__ void atomic64_sub(long a, atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
-"1: ldarx %0,0,%3 # atomic64_sub\n\
- subf %0,%2,%0\n\
- stdcx. %0,0,%3 \n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (a), "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ long atomic64_sub_return(long a, atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: ldarx %0,0,%2 # atomic64_sub_return\n\
- subf %0,%1,%0\n\
- stdcx. %0,0,%2 \n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (a), "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-static __inline__ void atomic64_inc(atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
-"1: ldarx %0,0,%2 # atomic64_inc\n\
- addic %0,%0,1\n\
- stdcx. %0,0,%2 \n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ long atomic64_inc_return(atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: ldarx %0,0,%1 # atomic64_inc_return\n\
- addic %0,%0,1\n\
- stdcx. %0,0,%1 \n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-/*
- * atomic64_inc_and_test - increment and test
- * @v: pointer of type atomic64_t
- *
- * Atomically increments @v by 1
- * and returns true if the result is zero, or false for all
- * other cases.
- */
-#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
-
-static __inline__ void atomic64_dec(atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
-"1: ldarx %0,0,%2 # atomic64_dec\n\
- addic %0,%0,-1\n\
- stdcx. %0,0,%2\n\
- bne- 1b"
- : "=&r" (t), "=m" (v->counter)
- : "r" (&v->counter), "m" (v->counter)
- : "cc");
-}
-
-static __inline__ long atomic64_dec_return(atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: ldarx %0,0,%1 # atomic64_dec_return\n\
- addic %0,%0,-1\n\
- stdcx. %0,0,%1\n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (t)
- : "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-#define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0)
-#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
-
-/*
- * Atomically test *v and decrement if it is greater than 0.
- * The function returns the old value of *v minus 1.
- */
-static __inline__ long atomic64_dec_if_positive(atomic64_t *v)
-{
- long t;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: ldarx %0,0,%1 # atomic64_dec_if_positive\n\
- addic. %0,%0,-1\n\
- blt- 2f\n\
- stdcx. %0,0,%1\n\
- bne- 1b"
- ISYNC_ON_SMP
- "\n\
-2:" : "=&r" (t)
- : "r" (&v->counter)
- : "cc", "memory");
-
- return t;
-}
-
-#endif /* __powerpc64__ */
-
-#include <asm-generic/atomic.h>
-#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_ATOMIC_H_ */
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