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-rw-r--r--include/asm-s390/atomic.h207
1 files changed, 0 insertions, 207 deletions
diff --git a/include/asm-s390/atomic.h b/include/asm-s390/atomic.h
deleted file mode 100644
index 9d86ba6f12d..00000000000
--- a/include/asm-s390/atomic.h
+++ /dev/null
@@ -1,207 +0,0 @@
-#ifndef __ARCH_S390_ATOMIC__
-#define __ARCH_S390_ATOMIC__
-
-/*
- * include/asm-s390/atomic.h
- *
- * S390 version
- * Copyright (C) 1999-2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- * Denis Joseph Barrow,
- * Arnd Bergmann (arndb@de.ibm.com)
- *
- * Derived from "include/asm-i386/bitops.h"
- * Copyright (C) 1992, Linus Torvalds
- *
- */
-
-/*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- * S390 uses 'Compare And Swap' for atomicity in SMP enviroment
- */
-
-typedef struct {
- volatile int counter;
-} __attribute__ ((aligned (4))) atomic_t;
-#define ATOMIC_INIT(i) { (i) }
-
-#ifdef __KERNEL__
-
-#define __CS_LOOP(ptr, op_val, op_string) ({ \
- typeof(ptr->counter) old_val, new_val; \
- __asm__ __volatile__(" l %0,0(%3)\n" \
- "0: lr %1,%0\n" \
- op_string " %1,%4\n" \
- " cs %0,%1,0(%3)\n" \
- " jl 0b" \
- : "=&d" (old_val), "=&d" (new_val), \
- "=m" (((atomic_t *)(ptr))->counter) \
- : "a" (ptr), "d" (op_val), \
- "m" (((atomic_t *)(ptr))->counter) \
- : "cc", "memory" ); \
- new_val; \
-})
-#define atomic_read(v) ((v)->counter)
-#define atomic_set(v,i) (((v)->counter) = (i))
-
-static __inline__ void atomic_add(int i, atomic_t * v)
-{
- __CS_LOOP(v, i, "ar");
-}
-static __inline__ int atomic_add_return(int i, atomic_t * v)
-{
- return __CS_LOOP(v, i, "ar");
-}
-static __inline__ int atomic_add_negative(int i, atomic_t * v)
-{
- return __CS_LOOP(v, i, "ar") < 0;
-}
-static __inline__ void atomic_sub(int i, atomic_t * v)
-{
- __CS_LOOP(v, i, "sr");
-}
-static __inline__ int atomic_sub_return(int i, atomic_t * v)
-{
- return __CS_LOOP(v, i, "sr");
-}
-static __inline__ void atomic_inc(volatile atomic_t * v)
-{
- __CS_LOOP(v, 1, "ar");
-}
-static __inline__ int atomic_inc_return(volatile atomic_t * v)
-{
- return __CS_LOOP(v, 1, "ar");
-}
-
-static __inline__ int atomic_inc_and_test(volatile atomic_t * v)
-{
- return __CS_LOOP(v, 1, "ar") == 0;
-}
-static __inline__ void atomic_dec(volatile atomic_t * v)
-{
- __CS_LOOP(v, 1, "sr");
-}
-static __inline__ int atomic_dec_return(volatile atomic_t * v)
-{
- return __CS_LOOP(v, 1, "sr");
-}
-static __inline__ int atomic_dec_and_test(volatile atomic_t * v)
-{
- return __CS_LOOP(v, 1, "sr") == 0;
-}
-static __inline__ void atomic_clear_mask(unsigned long mask, atomic_t * v)
-{
- __CS_LOOP(v, ~mask, "nr");
-}
-static __inline__ void atomic_set_mask(unsigned long mask, atomic_t * v)
-{
- __CS_LOOP(v, mask, "or");
-}
-#undef __CS_LOOP
-
-#ifdef __s390x__
-typedef struct {
- volatile long long counter;
-} __attribute__ ((aligned (8))) atomic64_t;
-#define ATOMIC64_INIT(i) { (i) }
-
-#define __CSG_LOOP(ptr, op_val, op_string) ({ \
- typeof(ptr->counter) old_val, new_val; \
- __asm__ __volatile__(" lg %0,0(%3)\n" \
- "0: lgr %1,%0\n" \
- op_string " %1,%4\n" \
- " csg %0,%1,0(%3)\n" \
- " jl 0b" \
- : "=&d" (old_val), "=&d" (new_val), \
- "=m" (((atomic_t *)(ptr))->counter) \
- : "a" (ptr), "d" (op_val), \
- "m" (((atomic_t *)(ptr))->counter) \
- : "cc", "memory" ); \
- new_val; \
-})
-#define atomic64_read(v) ((v)->counter)
-#define atomic64_set(v,i) (((v)->counter) = (i))
-
-static __inline__ void atomic64_add(long long i, atomic64_t * v)
-{
- __CSG_LOOP(v, i, "agr");
-}
-static __inline__ long long atomic64_add_return(long long i, atomic64_t * v)
-{
- return __CSG_LOOP(v, i, "agr");
-}
-static __inline__ long long atomic64_add_negative(long long i, atomic64_t * v)
-{
- return __CSG_LOOP(v, i, "agr") < 0;
-}
-static __inline__ void atomic64_sub(long long i, atomic64_t * v)
-{
- __CSG_LOOP(v, i, "sgr");
-}
-static __inline__ void atomic64_inc(volatile atomic64_t * v)
-{
- __CSG_LOOP(v, 1, "agr");
-}
-static __inline__ long long atomic64_inc_return(volatile atomic64_t * v)
-{
- return __CSG_LOOP(v, 1, "agr");
-}
-static __inline__ long long atomic64_inc_and_test(volatile atomic64_t * v)
-{
- return __CSG_LOOP(v, 1, "agr") == 0;
-}
-static __inline__ void atomic64_dec(volatile atomic64_t * v)
-{
- __CSG_LOOP(v, 1, "sgr");
-}
-static __inline__ long long atomic64_dec_return(volatile atomic64_t * v)
-{
- return __CSG_LOOP(v, 1, "sgr");
-}
-static __inline__ long long atomic64_dec_and_test(volatile atomic64_t * v)
-{
- return __CSG_LOOP(v, 1, "sgr") == 0;
-}
-static __inline__ void atomic64_clear_mask(unsigned long mask, atomic64_t * v)
-{
- __CSG_LOOP(v, ~mask, "ngr");
-}
-static __inline__ void atomic64_set_mask(unsigned long mask, atomic64_t * v)
-{
- __CSG_LOOP(v, mask, "ogr");
-}
-
-#undef __CSG_LOOP
-#endif
-
-/*
- returns 0 if expected_oldval==value in *v ( swap was successful )
- returns 1 if unsuccessful.
-
- This is non-portable, use bitops or spinlocks instead!
-*/
-static __inline__ int
-atomic_compare_and_swap(int expected_oldval,int new_val,atomic_t *v)
-{
- int retval;
-
- __asm__ __volatile__(
- " lr %0,%3\n"
- " cs %0,%4,0(%2)\n"
- " ipm %0\n"
- " srl %0,28\n"
- "0:"
- : "=&d" (retval), "=m" (v->counter)
- : "a" (v), "d" (expected_oldval) , "d" (new_val),
- "m" (v->counter) : "cc", "memory" );
- return retval;
-}
-
-#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()
-
-#endif /* __KERNEL__ */
-#endif /* __ARCH_S390_ATOMIC__ */
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