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linux/arch/blackfin/include/asm/bitops.h
Yi Li 6a01f23033 Blackfin arch: merge adeos blackfin part to arch/blackfin/ 
[Mike Frysinger <vapier.adi@gmail.com>:
 - handle bf531/bf532/bf534/bf536 variants in ipipe.h
 - cleanup IPIPE logic for bfin_set_irq_handler()
 - cleanup ipipe asm code a bit and add missing ENDPROC()
 - simplify IPIPE code in trap_c
 - unify some of the IPIPE code and fix style
 - simplify DO_IRQ_L1 handling with ipipe code
 - revert IRQ_SW_INT# addition from ipipe merge
 - remove duplicate get_{c,s}clk() prototypes
]

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00

281 lines
6.1 KiB
C
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#ifndef _BLACKFIN_BITOPS_H
#define _BLACKFIN_BITOPS_H
/*
* Copyright 1992, Linus Torvalds.
*/
#include <linux/compiler.h>
#include <asm/byteorder.h> /* swab32 */
#ifdef __KERNEL__
#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif
#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);
asmlinkage int __raw_bit_clear_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_toggle_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_set_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_clear_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_toggle_asm(volatile unsigned long *addr, int nr);
asmlinkage int __raw_bit_test_asm(const volatile unsigned long *addr, int nr);
static inline void set_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
__raw_bit_set_asm(a, nr & 0x1f);
}
static inline void clear_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
__raw_bit_clear_asm(a, nr & 0x1f);
}
static inline void change_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
__raw_bit_toggle_asm(a, nr & 0x1f);
}
static inline int test_bit(int nr, const volatile unsigned long *addr)
{
volatile const unsigned long *a = addr + (nr >> 5);
return __raw_bit_test_asm(a, nr & 0x1f) != 0;
}
static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
return __raw_bit_test_set_asm(a, nr & 0x1f);
}
static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
return __raw_bit_test_clear_asm(a, nr & 0x1f);
}
static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
{
volatile unsigned long *a = addr + (nr >> 5);
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, 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/find.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/ext2-non-atomic.h>
#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 /* _BLACKFIN_BITOPS_H */
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