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add atomic operations for Blackfin parts

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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mike Frysinger 2010-01-17 16:55:03 -05:00 • committed by Takashi Iwai
parent bdf80e58af
commit d3c6e2b097
1 changed files with 23 additions and 0 deletions
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23
include/iatomic.h
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@ -1079,6 +1079,29 @@ static __inline__ int atomic_sub_return(int i, volatile atomic_t *v)
#endif /* __sh__ */
#ifdef __bfin__
#include <bfin_fixed_code.h>
typedef struct { volatile int counter; } atomic_t;
#define ATOMIC_INIT(i) { (i) }
#define atomic_read(v) ((v)->counter)
#define atomic_set(v,i) (((v)->counter) = (i))
#define atomic_add(i,v) bfin_atomic_add32(&(v)->counter, i)
#define atomic_sub(i,v) bfin_atomic_sub32(&(v)->counter, i)
#define atomic_inc(v) bfin_atomic_inc32(&(v)->counter);
#define atomic_dec(v) bfin_atomic_dec32(&(v)->counter);
#define mb() __asm__ __volatile__ ("" : : : "memory")
#define rmb() mb()
#define wmb() mb()
#define IATOMIC_DEFINED 1
#endif /* __bfin__ */
#ifndef IATOMIC_DEFINED
/*
* non supported architecture.