#ifndef _ASM_BITOPS_H
#define _ASM_BITOPS_H
-#include <linux/config.h>
#include <linux/compiler.h>
+#include <linux/irqflags.h>
#include <linux/types.h>
#include <asm/bug.h>
#include <asm/byteorder.h> /* sigh ... */
#include <asm/cpu-features.h>
+#include <asm/sgidefs.h>
+#include <asm/war.h>
#if (_MIPS_SZLONG == 32)
#define SZLONG_LOG 5
#define SZLONG_MASK 31UL
#define __LL "ll "
#define __SC "sc "
-#define cpu_to_lelongp(x) cpu_to_le32p((__u32 *) (x))
#elif (_MIPS_SZLONG == 64)
#define SZLONG_LOG 6
#define SZLONG_MASK 63UL
#define __LL "lld "
#define __SC "scd "
-#define cpu_to_lelongp(x) cpu_to_le64p((__u64 *) (x))
#endif
-#ifdef __KERNEL__
-
-#include <asm/interrupt.h>
-#include <asm/sgidefs.h>
-#include <asm/war.h>
-
/*
* clear_bit() doesn't provide any barrier for the compiler.
*/
#define smp_mb__before_clear_bit() smp_mb()
#define smp_mb__after_clear_bit() smp_mb()
-/*
- * Only disable interrupt for kernel mode stuff to keep usermode stuff
- * that dares to use kernel include files alive.
- */
-
-#define __bi_flags unsigned long flags
-#define __bi_local_irq_save(x) local_irq_save(x)
-#define __bi_local_irq_restore(x) local_irq_restore(x)
-#else
-#define __bi_flags
-#define __bi_local_irq_save(x)
-#define __bi_local_irq_restore(x)
-#endif /* __KERNEL__ */
-
/*
* set_bit - Atomically set a bit in memory
* @nr: the bit to set
} else {
volatile unsigned long *a = addr;
unsigned long mask;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
*a |= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
}
}
} else {
volatile unsigned long *a = addr;
unsigned long mask;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
*a &= ~mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
}
}
} else {
volatile unsigned long *a = addr;
unsigned long mask;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
*a ^= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
}
}
volatile unsigned long *a = addr;
unsigned long mask;
int retval;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
retval = (mask & *a) != 0;
*a |= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
return retval;
}
volatile unsigned long *a = addr;
unsigned long mask;
int retval;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
retval = (mask & *a) != 0;
*a &= ~mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
return retval;
}
} else {
volatile unsigned long *a = addr;
unsigned long mask, retval;
- __bi_flags;
+ unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
- __bi_local_irq_save(flags);
+ local_irq_save(flags);
retval = (mask & *a) != 0;
*a ^= mask;
- __bi_local_irq_restore(flags);
+ local_irq_restore(flags);
return retval;
}
}
-#undef __bi_flags
-#undef __bi_local_irq_save
-#undef __bi_local_irq_restore
-
#include <asm-generic/bitops/non-atomic.h>
/*
}
/*
- * ffs - find first bit set.
+ * fls - find last bit set.
* @word: The word to search
*
- * Returns 1..SZLONG
- * Returns 0 if no bit exists
+ * This is defined the same way as ffs.
+ * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
-
-static inline unsigned long ffs(unsigned long word)
+static inline int fls(int word)
{
- if (!word)
- return 0;
+ __asm__ ("clz %0, %1" : "=r" (word) : "r" (word));
- return __ffs(word) + 1;
+ return 32 - word;
}
-/*
- * ffz - find first zero in word.
- * @word: The word to search
- *
- * Undefined if no zero exists, so code should check against ~0UL first.
- */
-static inline unsigned long ffz(unsigned long word)
+#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPS64)
+static inline int fls64(__u64 word)
{
- return __ffs (~word);
+ __asm__ ("dclz %0, %1" : "=r" (word) : "r" (word));
+
+ return 64 - word;
}
+#else
+#include <asm-generic/bitops/fls64.h>
+#endif
/*
- * fls - find last bit set.
+ * ffs - find first bit set.
* @word: The word to search
*
- * Returns 1..SZLONG
- * Returns 0 if no bit exists
+ * This is defined the same way as
+ * the libc and compiler builtin ffs routines, therefore
+ * differs in spirit from the above ffz (man ffs).
*/
-static inline unsigned long fls(unsigned long word)
+static inline int ffs(int word)
{
-#ifdef CONFIG_CPU_MIPS32
- __asm__ ("clz %0, %1" : "=r" (word) : "r" (word));
-
- return 32 - word;
-#endif
-
-#ifdef CONFIG_CPU_MIPS64
- __asm__ ("dclz %0, %1" : "=r" (word) : "r" (word));
+ if (!word)
+ return 0;
- return 64 - word;
-#endif
+ return fls(word & -word);
}
#else
#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/fls64.h>
#endif /*defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) */
-#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/find.h>
#ifdef __KERNEL__