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#ifndef __ASM_METAG_BITOPS_H
#define __ASM_METAG_BITOPS_H
#include <linux/compiler.h>
#include <asm/barrier.h>
#include <asm/global_lock.h>
/*
* clear_bit() doesn't provide any barrier for the compiler.
*/
#define smp_mb__before_clear_bit() barrier()
#define smp_mb__after_clear_bit() barrier()
#ifdef CONFIG_SMP
/*
* These functions are the basis of our bit ops.
*/
static inline void set_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
unsigned long mask = 1UL << (bit & 31);
p += bit >> 5;
__global_lock1(flags);
fence();
*p |= mask;
__global_unlock1(flags);
}
static inline void clear_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
unsigned long mask = 1UL << (bit & 31);
p += bit >> 5;
__global_lock1(flags);
fence();
*p &= ~mask;
__global_unlock1(flags);
}
static inline void change_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
unsigned long mask = 1UL << (bit & 31);
p += bit >> 5;
__global_lock1(flags);
fence();
*p ^= mask;
__global_unlock1(flags);
}
static inline int test_and_set_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
unsigned long old;
unsigned long mask = 1UL << (bit & 31);
p += bit >> 5;
__global_lock1(flags);
old = *p;
if (!(old & mask)) {
fence();
*p = old | mask;
}
__global_unlock1(flags);
return (old & mask) != 0;
}
static inline int test_and_clear_bit(unsigned int bit,
volatile unsigned long *p)
{
unsigned long flags;
unsigned long old;
unsigned long mask = 1UL << (bit & 31);
p += bit >> 5;
__global_lock1(flags);
old = *p;
if (old & mask) {
fence();
*p = old & ~mask;
}
__global_unlock1(flags);
return (old & mask) != 0;
}
static inline int test_and_change_bit(unsigned int bit,
volatile unsigned long *p)
{
unsigned long flags;
unsigned long old;
unsigned long mask = 1UL << (bit & 31);
p += bit >> 5;
__global_lock1(flags);
fence();
old = *p;
*p = old ^ mask;
__global_unlock1(flags);
return (old & mask) != 0;
}
#else
#include <asm-generic/bitops/atomic.h>
#endif /* CONFIG_SMP */
#include <asm-generic/bitops/non-atomic.h>
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/ffs.h>
#include <asm-generic/bitops/__ffs.h>
#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#endif /* __ASM_METAG_BITOPS_H */
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