Commit 3d150630 authored by Mike Frysinger's avatar Mike Frysinger
Browse files

Blackfin: convert locking primitives to asm-generic 



Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 22a151c1

arch/blackfin/include/asm/atomic.h

+7 −102
Original line number Diff line number Diff line 
#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..

 *

 * Generally we do not concern about SMP BFIN systems, so we don't have

 * to deal with that.

 *

 * Tony Kou (tonyko@lineo.ca)   Lineo Inc.   2001

 */



#define ATOMIC_INIT(i)	{ (i) }

#define atomic_set(v, i)	(((v)->counter) = i)



#ifdef CONFIG_SMP



#define atomic_read(v)	__raw_uncached_fetch_asm(&(v)->counter)



asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
@@ -84,100 +81,6 @@ static inline int atomic_test_mask(int mask, atomic_t *v) 
#define smp_mb__before_atomic_inc()    barrier()

#define smp_mb__after_atomic_inc() barrier()



#else /* !CONFIG_SMP */



#define atomic_read(v)	((v)->counter)



static inline void atomic_add(int i, atomic_t *v)

{

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter += i;

	local_irq_restore_hw(flags);

}



static inline void atomic_sub(int i, atomic_t *v)

{

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter -= i;

	local_irq_restore_hw(flags);



}



static inline int atomic_add_return(int i, atomic_t *v)

{

	int __temp = 0;

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter += i;

	__temp = v->counter;

	local_irq_restore_hw(flags);





	return __temp;

}



static inline int atomic_sub_return(int i, atomic_t *v)

{

	int __temp = 0;

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter -= i;

	__temp = v->counter;

	local_irq_restore_hw(flags);



	return __temp;

}



static inline void atomic_inc(volatile atomic_t *v)

{

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter++;

	local_irq_restore_hw(flags);

}



static inline void atomic_dec(volatile atomic_t *v)

{

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter--;

	local_irq_restore_hw(flags);

}



static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)

{

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter &= ~mask;

	local_irq_restore_hw(flags);

}



static inline void atomic_set_mask(unsigned int mask, atomic_t *v)

{

	unsigned long flags;



	local_irq_save_hw(flags);

	v->counter |= mask;

	local_irq_restore_hw(flags);

}



/* 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()



#endif /* !CONFIG_SMP */



#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))
@@ -210,4 +113,6 @@ static inline void atomic_set_mask(unsigned int mask, atomic_t *v) 


#include <asm-generic/atomic-long.h>



#endif				/* __ARCH_BLACKFIN_ATOMIC __ */
 
#endif



#endif

arch/blackfin/include/asm/bitops.h

+9 −189
Original line number Diff line number Diff line 
#ifndef _BLACKFIN_BITOPS_H

#define _BLACKFIN_BITOPS_H



/*

 * Copyright 1992, Linus Torvalds.

 */



#include <linux/compiler.h>

#include <asm/byteorder.h>	/* swab32 */



#ifdef __KERNEL__

#ifndef CONFIG_SMP

# include <asm-generic/bitops.h>

#else



#ifndef _LINUX_BITOPS_H

#error only <linux/bitops.h> can be included directly

#endif



#include <linux/compiler.h>

#include <asm/byteorder.h>	/* swab32 */



#include <asm-generic/bitops/ffs.h>

#include <asm-generic/bitops/__ffs.h>

#include <asm-generic/bitops/sched.h>

#include <asm-generic/bitops/ffz.h>



#ifdef CONFIG_SMP



#include <linux/linkage.h>



asmlinkage int __raw_bit_set_asm(volatile unsigned long *addr, int nr);
@@ -79,189 +75,13 @@ static inline int test_and_change_bit(int nr, volatile unsigned long *addr) 
	return __raw_bit_test_toggle_asm(a, nr & 0x1f);

}



#else /* !CONFIG_SMP */



#include <asm/system.h>		/* save_flags */



static inline void set_bit(int nr, volatile unsigned long *addr)

{

	int *a = (int *)addr;

	int mask;

	unsigned long flags;

	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	local_irq_save_hw(flags);

	*a |= mask;

	local_irq_restore_hw(flags);

}



static inline void clear_bit(int nr, volatile unsigned long *addr)

{

	int *a = (int *)addr;

	int mask;

	unsigned long flags;

	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	local_irq_save_hw(flags);

	*a &= ~mask;

	local_irq_restore_hw(flags);

}



static inline void change_bit(int nr, volatile unsigned long *addr)

{

	int mask;

	unsigned long flags;

	unsigned long *ADDR = (unsigned long *)addr;



	ADDR += nr >> 5;

	mask = 1 << (nr & 31);

	local_irq_save_hw(flags);

	*ADDR ^= mask;

	local_irq_restore_hw(flags);

}



static inline int test_and_set_bit(int nr, volatile unsigned long *addr)

{

	int mask, retval;

	volatile unsigned int *a = (volatile unsigned int *)addr;

	unsigned long flags;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	local_irq_save_hw(flags);

	retval = (mask & *a) != 0;

	*a |= mask;

	local_irq_restore_hw(flags);



	return retval;

}



static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)

{

	int mask, retval;

	volatile unsigned int *a = (volatile unsigned int *)addr;

	unsigned long flags;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	local_irq_save_hw(flags);

	retval = (mask & *a) != 0;

	*a &= ~mask;

	local_irq_restore_hw(flags);



	return retval;

}



static inline int test_and_change_bit(int nr, volatile unsigned long *addr)

{

	int mask, retval;

	volatile unsigned int *a = (volatile unsigned int *)addr;

	unsigned long flags;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	local_irq_save_hw(flags);

	retval = (mask & *a) != 0;

	*a ^= mask;

	local_irq_restore_hw(flags);

	return retval;

}



#endif /* CONFIG_SMP */



/*

 * clear_bit() doesn't provide any barrier for the compiler.

 */

#define smp_mb__before_clear_bit()	barrier()

#define smp_mb__after_clear_bit()	barrier()



static inline void __set_bit(int nr, volatile unsigned long *addr)

{

	int *a = (int *)addr;

	int mask;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	*a |= mask;

}



static inline void __clear_bit(int nr, volatile unsigned long *addr)

{

	int *a = (int *)addr;

	int mask;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	*a &= ~mask;

}



static inline void __change_bit(int nr, volatile unsigned long *addr)

{

	int mask;

	unsigned long *ADDR = (unsigned long *)addr;



	ADDR += nr >> 5;

	mask = 1 << (nr & 31);

	*ADDR ^= mask;

}



static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)

{

	int mask, retval;

	volatile unsigned int *a = (volatile unsigned int *)addr;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	retval = (mask & *a) != 0;

	*a |= mask;

	return retval;

}



static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)

{

	int mask, retval;

	volatile unsigned int *a = (volatile unsigned int *)addr;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	retval = (mask & *a) != 0;

	*a &= ~mask;

	return retval;

}



static inline int __test_and_change_bit(int nr,

					    volatile unsigned long *addr)

{

	int mask, retval;

	volatile unsigned int *a = (volatile unsigned int *)addr;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	retval = (mask & *a) != 0;

	*a ^= mask;

	return retval;

}



static inline int __test_bit(int nr, const void *addr)

{

	int *a = (int *)addr;

	int mask;



	a += nr >> 5;

	mask = 1 << (nr & 0x1f);

	return ((mask & *a) != 0);

}



#ifndef CONFIG_SMP

/*

 * This routine doesn't need irq save and restore ops in UP

 * context.

 */

static inline int test_bit(int nr, const void *addr)

{

	return __test_bit(nr, addr);

}

#endif

#include <asm-generic/bitops/non-atomic.h>



#include <asm-generic/bitops/find.h>

#include <asm-generic/bitops/hweight.h>
@@ -272,10 +92,10 @@ static inline int test_bit(int nr, const void *addr) 


#include <asm-generic/bitops/minix.h>



#endif				/* __KERNEL__ */



#include <asm-generic/bitops/fls.h>

#include <asm-generic/bitops/__fls.h>

#include <asm-generic/bitops/fls64.h>



#endif /* CONFIG_SMP */



#endif				/* _BLACKFIN_BITOPS_H */

arch/blackfin/include/asm/mutex.h

+1 −1
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ 
#define _ASM_MUTEX_H



#ifndef CONFIG_SMP

#include <asm-generic/mutex-dec.h>

#include <asm-generic/mutex.h>

#else



static inline void

arch/blackfin/include/asm/spinlock.h

+6 −0
Original line number Diff line number Diff line 
#ifndef __BFIN_SPINLOCK_H

#define __BFIN_SPINLOCK_H



#ifndef CONFIG_SMP

# include <asm-generic/spinlock.h>

#else



#include <asm/atomic.h>



asmlinkage int __raw_spin_is_locked_asm(volatile int *ptr);
@@ -86,4 +90,6 @@ static inline void __raw_write_unlock(raw_rwlock_t *rw) 
#define _raw_read_relax(lock)	cpu_relax()

#define _raw_write_relax(lock)	cpu_relax()



#endif



#endif /*  !__BFIN_SPINLOCK_H */

arch/blackfin/include/asm/swab.h

+1 −5
Original line number Diff line number Diff line
@@ -2,11 +2,7 @@ 
#define _BLACKFIN_SWAB_H



#include <linux/types.h>

#include <linux/compiler.h>



#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)

#  define __SWAB_64_THRU_32__

#endif

#include <asm-generic/swab.h>



#ifdef __GNUC__