mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 02:20:53 +07:00
96f1050d3d
Bill Gatliff & David Brownell pointed out we were missing some copyrights, and licensing terms in some of the files in ./arch/blackfin, so this fixes things, and cleans them up. It also removes: - verbose GPL text(refer to the top level ./COPYING file) - file names (you are looking at the file) - bug url (it's in the ./MAINTAINERS file) - "or later" on GPL-2, when we did not have that right It also allows some Blackfin-specific assembly files to be under a BSD like license (for people to use them outside of Linux). Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/*
|
||
* Copyright 2004-2009 Analog Devices Inc.
|
||
*
|
||
* Licensed under the GPL-2 or later.
|
||
*/
|
||
|
||
#ifndef __ARCH_BLACKFIN_ATOMIC__
|
||
#define __ARCH_BLACKFIN_ATOMIC__
|
||
|
||
#ifndef CONFIG_SMP
|
||
# include <asm-generic/atomic.h>
|
||
#else
|
||
|
||
#include <linux/types.h>
|
||
#include <asm/system.h> /* local_irq_XXX() */
|
||
|
||
/*
|
||
* Atomic operations that C can't guarantee us. Useful for
|
||
* resource counting etc..
|
||
*/
|
||
|
||
#define ATOMIC_INIT(i) { (i) }
|
||
#define atomic_set(v, i) (((v)->counter) = i)
|
||
|
||
#define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
|
||
|
||
asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
|
||
|
||
asmlinkage int __raw_atomic_update_asm(volatile int *ptr, int value);
|
||
|
||
asmlinkage int __raw_atomic_clear_asm(volatile int *ptr, int value);
|
||
|
||
asmlinkage int __raw_atomic_set_asm(volatile int *ptr, int value);
|
||
|
||
asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
|
||
|
||
asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
|
||
|
||
static inline void atomic_add(int i, atomic_t *v)
|
||
{
|
||
__raw_atomic_update_asm(&v->counter, i);
|
||
}
|
||
|
||
static inline void atomic_sub(int i, atomic_t *v)
|
||
{
|
||
__raw_atomic_update_asm(&v->counter, -i);
|
||
}
|
||
|
||
static inline int atomic_add_return(int i, atomic_t *v)
|
||
{
|
||
return __raw_atomic_update_asm(&v->counter, i);
|
||
}
|
||
|
||
static inline int atomic_sub_return(int i, atomic_t *v)
|
||
{
|
||
return __raw_atomic_update_asm(&v->counter, -i);
|
||
}
|
||
|
||
static inline void atomic_inc(volatile atomic_t *v)
|
||
{
|
||
__raw_atomic_update_asm(&v->counter, 1);
|
||
}
|
||
|
||
static inline void atomic_dec(volatile atomic_t *v)
|
||
{
|
||
__raw_atomic_update_asm(&v->counter, -1);
|
||
}
|
||
|
||
static inline void atomic_clear_mask(int mask, atomic_t *v)
|
||
{
|
||
__raw_atomic_clear_asm(&v->counter, mask);
|
||
}
|
||
|
||
static inline void atomic_set_mask(int mask, atomic_t *v)
|
||
{
|
||
__raw_atomic_set_asm(&v->counter, mask);
|
||
}
|
||
|
||
static inline int atomic_test_mask(int mask, atomic_t *v)
|
||
{
|
||
return __raw_atomic_test_asm(&v->counter, mask);
|
||
}
|
||
|
||
/* 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()
|
||
|
||
#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
|
||
#define atomic_dec_return(v) atomic_sub_return(1,(v))
|
||
#define atomic_inc_return(v) atomic_add_return(1,(v))
|
||
|
||
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
|
||
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
|
||
|
||
#define atomic_add_unless(v, a, u) \
|
||
({ \
|
||
int c, old; \
|
||
c = atomic_read(v); \
|
||
while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
|
||
c = old; \
|
||
c != (u); \
|
||
})
|
||
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
|
||
|
||
/*
|
||
* 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)
|
||
|
||
#define atomic_sub_and_test(i,v) (atomic_sub_return((i), (v)) == 0)
|
||
#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
|
||
|
||
#include <asm-generic/atomic-long.h>
|
||
|
||
#endif
|
||
|
||
#endif
|