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-rw-r--r--arch/tile/include/asm/atomic_32.h297
1 files changed, 0 insertions, 297 deletions
diff --git a/arch/tile/include/asm/atomic_32.h b/arch/tile/include/asm/atomic_32.h
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index 53a423e7cb92..000000000000
--- a/arch/tile/include/asm/atomic_32.h
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@@ -1,297 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- *
- * Do not include directly; use <linux/atomic.h>.
- */
-
-#ifndef _ASM_TILE_ATOMIC_32_H
-#define _ASM_TILE_ATOMIC_32_H
-
-#include <asm/barrier.h>
-#include <arch/chip.h>
-
-#ifndef __ASSEMBLY__
-
-/**
- * atomic_add - add integer to atomic variable
- * @i: integer value to add
- * @v: pointer of type atomic_t
- *
- * Atomically adds @i to @v.
- */
-static inline void atomic_add(int i, atomic_t *v)
-{
- _atomic_xchg_add(&v->counter, i);
-}
-
-#define ATOMIC_OPS(op) \
-unsigned long _atomic_fetch_##op(volatile unsigned long *p, unsigned long mask); \
-static inline void atomic_##op(int i, atomic_t *v) \
-{ \
- _atomic_fetch_##op((unsigned long *)&v->counter, i); \
-} \
-static inline int atomic_fetch_##op(int i, atomic_t *v) \
-{ \
- smp_mb(); \
- return _atomic_fetch_##op((unsigned long *)&v->counter, i); \
-}
-
-ATOMIC_OPS(and)
-ATOMIC_OPS(or)
-ATOMIC_OPS(xor)
-
-#undef ATOMIC_OPS
-
-static inline int atomic_fetch_add(int i, atomic_t *v)
-{
- smp_mb();
- return _atomic_xchg_add(&v->counter, i);
-}
-
-/**
- * atomic_add_return - add integer and return
- * @v: pointer of type atomic_t
- * @i: integer value to add
- *
- * Atomically adds @i to @v and returns @i + @v
- */
-static inline int atomic_add_return(int i, atomic_t *v)
-{
- smp_mb(); /* barrier for proper semantics */
- return _atomic_xchg_add(&v->counter, i) + i;
-}
-
-/**
- * __atomic_add_unless - add unless the number is already 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 @v was not already @u.
- * Returns the old value of @v.
- */
-static inline int __atomic_add_unless(atomic_t *v, int a, int u)
-{
- smp_mb(); /* barrier for proper semantics */
- return _atomic_xchg_add_unless(&v->counter, a, u);
-}
-
-/**
- * atomic_set - set atomic variable
- * @v: pointer of type atomic_t
- * @i: required value
- *
- * Atomically sets the value of @v to @i.
- *
- * atomic_set() can't be just a raw store, since it would be lost if it
- * fell between the load and store of one of the other atomic ops.
- */
-static inline void atomic_set(atomic_t *v, int n)
-{
- _atomic_xchg(&v->counter, n);
-}
-
-#define atomic_set_release(v, i) atomic_set((v), (i))
-
-/* A 64bit atomic type */
-
-typedef struct {
- long long counter;
-} atomic64_t;
-
-#define ATOMIC64_INIT(val) { (val) }
-
-/**
- * atomic64_read - read atomic variable
- * @v: pointer of type atomic64_t
- *
- * Atomically reads the value of @v.
- */
-static inline long long atomic64_read(const atomic64_t *v)
-{
- /*
- * Requires an atomic op to read both 32-bit parts consistently.
- * Casting away const is safe since the atomic support routines
- * do not write to memory if the value has not been modified.
- */
- return _atomic64_xchg_add((long long *)&v->counter, 0);
-}
-
-/**
- * atomic64_add - add integer to atomic variable
- * @i: integer value to add
- * @v: pointer of type atomic64_t
- *
- * Atomically adds @i to @v.
- */
-static inline void atomic64_add(long long i, atomic64_t *v)
-{
- _atomic64_xchg_add(&v->counter, i);
-}
-
-#define ATOMIC64_OPS(op) \
-long long _atomic64_fetch_##op(long long *v, long long n); \
-static inline void atomic64_##op(long long i, atomic64_t *v) \
-{ \
- _atomic64_fetch_##op(&v->counter, i); \
-} \
-static inline long long atomic64_fetch_##op(long long i, atomic64_t *v) \
-{ \
- smp_mb(); \
- return _atomic64_fetch_##op(&v->counter, i); \
-}
-
-ATOMIC64_OPS(and)
-ATOMIC64_OPS(or)
-ATOMIC64_OPS(xor)
-
-#undef ATOMIC64_OPS
-
-static inline long long atomic64_fetch_add(long long i, atomic64_t *v)
-{
- smp_mb();
- return _atomic64_xchg_add(&v->counter, i);
-}
-
-/**
- * atomic64_add_return - add integer and return
- * @v: pointer of type atomic64_t
- * @i: integer value to add
- *
- * Atomically adds @i to @v and returns @i + @v
- */
-static inline long long atomic64_add_return(long long i, atomic64_t *v)
-{
- smp_mb(); /* barrier for proper semantics */
- return _atomic64_xchg_add(&v->counter, i) + i;
-}
-
-/**
- * atomic64_add_unless - add unless the number is already a given value
- * @v: pointer of type atomic64_t
- * @a: the amount to add to v...
- * @u: ...unless v is equal to u.
- *
- * Atomically adds @a to @v, so long as @v was not already @u.
- * Returns non-zero if @v was not @u, and zero otherwise.
- */
-static inline long long atomic64_add_unless(atomic64_t *v, long long a,
- long long u)
-{
- smp_mb(); /* barrier for proper semantics */
- return _atomic64_xchg_add_unless(&v->counter, a, u) != u;
-}
-
-/**
- * atomic64_set - set atomic variable
- * @v: pointer of type atomic64_t
- * @i: required value
- *
- * Atomically sets the value of @v to @i.
- *
- * atomic64_set() can't be just a raw store, since it would be lost if it
- * fell between the load and store of one of the other atomic ops.
- */
-static inline void atomic64_set(atomic64_t *v, long long n)
-{
- _atomic64_xchg(&v->counter, n);
-}
-
-#define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0)
-#define atomic64_inc(v) atomic64_add(1LL, (v))
-#define atomic64_inc_return(v) atomic64_add_return(1LL, (v))
-#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
-#define atomic64_sub_return(i, v) atomic64_add_return(-(i), (v))
-#define atomic64_fetch_sub(i, v) atomic64_fetch_add(-(i), (v))
-#define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0)
-#define atomic64_sub(i, v) atomic64_add(-(i), (v))
-#define atomic64_dec(v) atomic64_sub(1LL, (v))
-#define atomic64_dec_return(v) atomic64_sub_return(1LL, (v))
-#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
-#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL)
-
-#endif /* !__ASSEMBLY__ */
-
-/*
- * Internal definitions only beyond this point.
- */
-
-/*
- * Number of atomic locks in atomic_locks[]. Must be a power of two.
- * There is no reason for more than PAGE_SIZE / 8 entries, since that
- * is the maximum number of pointer bits we can use to index this.
- * And we cannot have more than PAGE_SIZE / 4, since this has to
- * fit on a single page and each entry takes 4 bytes.
- */
-#define ATOMIC_HASH_SHIFT (PAGE_SHIFT - 3)
-#define ATOMIC_HASH_SIZE (1 << ATOMIC_HASH_SHIFT)
-
-#ifndef __ASSEMBLY__
-extern int atomic_locks[];
-#endif
-
-/*
- * All the code that may fault while holding an atomic lock must
- * place the pointer to the lock in ATOMIC_LOCK_REG so the fault code
- * can correctly release and reacquire the lock. Note that we
- * mention the register number in a comment in "lib/atomic_asm.S" to help
- * assembly coders from using this register by mistake, so if it
- * is changed here, change that comment as well.
- */
-#define ATOMIC_LOCK_REG 20
-#define ATOMIC_LOCK_REG_NAME r20
-
-#ifndef __ASSEMBLY__
-/* Called from setup to initialize a hash table to point to per_cpu locks. */
-void __init_atomic_per_cpu(void);
-
-#ifdef CONFIG_SMP
-/* Support releasing the atomic lock in do_page_fault_ics(). */
-void __atomic_fault_unlock(int *lock_ptr);
-#endif
-
-/* Return a pointer to the lock for the given address. */
-int *__atomic_hashed_lock(volatile void *v);
-
-/* Private helper routines in lib/atomic_asm_32.S */
-struct __get_user {
- unsigned long val;
- int err;
-};
-extern struct __get_user __atomic32_cmpxchg(volatile int *p,
- int *lock, int o, int n);
-extern struct __get_user __atomic32_xchg(volatile int *p, int *lock, int n);
-extern struct __get_user __atomic32_xchg_add(volatile int *p, int *lock, int n);
-extern struct __get_user __atomic32_xchg_add_unless(volatile int *p,
- int *lock, int o, int n);
-extern struct __get_user __atomic32_fetch_or(volatile int *p, int *lock, int n);
-extern struct __get_user __atomic32_fetch_and(volatile int *p, int *lock, int n);
-extern struct __get_user __atomic32_fetch_andn(volatile int *p, int *lock, int n);
-extern struct __get_user __atomic32_fetch_xor(volatile int *p, int *lock, int n);
-extern long long __atomic64_cmpxchg(volatile long long *p, int *lock,
- long long o, long long n);
-extern long long __atomic64_xchg(volatile long long *p, int *lock, long long n);
-extern long long __atomic64_xchg_add(volatile long long *p, int *lock,
- long long n);
-extern long long __atomic64_xchg_add_unless(volatile long long *p,
- int *lock, long long o, long long n);
-extern long long __atomic64_fetch_and(volatile long long *p, int *lock, long long n);
-extern long long __atomic64_fetch_or(volatile long long *p, int *lock, long long n);
-extern long long __atomic64_fetch_xor(volatile long long *p, int *lock, long long n);
-
-/* Return failure from the atomic wrappers. */
-struct __get_user __atomic_bad_address(int __user *addr);
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_TILE_ATOMIC_32_H */