include/asm-m32r/bitops.h - linux/kernel/git/davem/net-next - Git at Google

 #ifndef _ASM_M32R_BITOPS_H
 #define _ASM_M32R_BITOPS_H

 /*
  *  linux/include/asm-m32r/bitops.h
  *
  *  Copyright 1992, Linus Torvalds.
  *
  *  M32R version:
  *    Copyright (C) 2001, 2002  Hitoshi Yamamoto
  *    Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
  */

 #include <linux/config.h>
 #include <linux/compiler.h>
 #include <asm/assembler.h>
 #include <asm/system.h>
 #include <asm/byteorder.h>
 #include <asm/types.h>

 /*
  * These have to be done with inline assembly: that way the bit-setting
  * is guaranteed to be atomic. All bit operations return 0 if the bit
  * was cleared before the operation and != 0 if it was not.
  *
  * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
  */

 /**
  * set_bit - Atomically set a bit in memory
  * @nr: the bit to set
  * @addr: the address to start counting from
  *
  * This function is atomic and may not be reordered.  See __set_bit()
  * if you do not require the atomic guarantees.
  * Note that @nr may be almost arbitrarily large; this function is not
  * restricted to acting on a single-word quantity.
  */
 static __inline__ void set_bit(int nr, volatile void * addr)
 {
 	__u32 mask;
 	volatile __u32 *a = addr;
 	unsigned long flags;
 	unsigned long tmp;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));

 	local_irq_save(flags);
 	__asm__ __volatile__ (
 		DCACHE_CLEAR("%0", "r6", "%1")
 		M32R_LOCK" %0, @%1;		\n\t"
 		"or	%0, %2;			\n\t"
 		M32R_UNLOCK" %0, @%1;		\n\t"
 		: "=&r" (tmp)
 		: "r" (a), "r" (mask)
 		: "memory"
 #ifdef CONFIG_CHIP_M32700_TS1
 		, "r6"
 #endif	/* CONFIG_CHIP_M32700_TS1 */
 	);
 	local_irq_restore(flags);
 }

 /**
  * __set_bit - Set a bit in memory
  * @nr: the bit to set
  * @addr: the address to start counting from
  *
  * Unlike set_bit(), this function is non-atomic and may be reordered.
  * If it's called on the same region of memory simultaneously, the effect
  * may be that only one operation succeeds.
  */
 static __inline__ void __set_bit(int nr, volatile void * addr)
 {
 	__u32 mask;
 	volatile __u32 *a = addr;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));
 	*a |= mask;
 }

 /**
  * clear_bit - Clears a bit in memory
  * @nr: Bit to clear
  * @addr: Address to start counting from
  *
  * clear_bit() is atomic and may not be reordered.  However, it does
  * not contain a memory barrier, so if it is used for locking purposes,
  * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit()
  * in order to ensure changes are visible on other processors.
  */
 static __inline__ void clear_bit(int nr, volatile void * addr)
 {
 	__u32 mask;
 	volatile __u32 *a = addr;
 	unsigned long flags;
 	unsigned long tmp;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));

 	local_irq_save(flags);

 	__asm__ __volatile__ (
 		DCACHE_CLEAR("%0", "r6", "%1")
 		M32R_LOCK" %0, @%1;		\n\t"
 		"and	%0, %2;			\n\t"
 		M32R_UNLOCK" %0, @%1;		\n\t"
 		: "=&r" (tmp)
 		: "r" (a), "r" (~mask)
 		: "memory"
 #ifdef CONFIG_CHIP_M32700_TS1
 		, "r6"
 #endif	/* CONFIG_CHIP_M32700_TS1 */
 	);
 	local_irq_restore(flags);
 }

 static __inline__ void __clear_bit(int nr, volatile unsigned long * addr)
 {
 	unsigned long mask;
 	volatile unsigned long *a = addr;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));
 	*a &= ~mask;
 }

 #define smp_mb__before_clear_bit()	barrier()
 #define smp_mb__after_clear_bit()	barrier()

 /**
  * __change_bit - Toggle a bit in memory
  * @nr: the bit to set
  * @addr: the address to start counting from
  *
  * Unlike change_bit(), this function is non-atomic and may be reordered.
  * If it's called on the same region of memory simultaneously, the effect
  * may be that only one operation succeeds.
  */
 static __inline__ void __change_bit(int nr, volatile void * addr)
 {
 	__u32 mask;
 	volatile __u32 *a = addr;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));
 	*a ^= mask;
 }

 /**
  * change_bit - Toggle a bit in memory
  * @nr: Bit to clear
  * @addr: Address to start counting from
  *
  * change_bit() is atomic and may not be reordered.
  * Note that @nr may be almost arbitrarily large; this function is not
  * restricted to acting on a single-word quantity.
  */
 static __inline__ void change_bit(int nr, volatile void * addr)
 {
 	__u32  mask;
 	volatile __u32  *a = addr;
 	unsigned long flags;
 	unsigned long tmp;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));

 	local_irq_save(flags);
 	__asm__ __volatile__ (
 		DCACHE_CLEAR("%0", "r6", "%1")
 		M32R_LOCK" %0, @%1;		\n\t"
 		"xor	%0, %2;			\n\t"
 		M32R_UNLOCK" %0, @%1;		\n\t"
 		: "=&r" (tmp)
 		: "r" (a), "r" (mask)
 		: "memory"
 #ifdef CONFIG_CHIP_M32700_TS1
 		, "r6"
 #endif	/* CONFIG_CHIP_M32700_TS1 */
 	);
 	local_irq_restore(flags);
 }

 /**
  * test_and_set_bit - Set a bit and return its old value
  * @nr: Bit to set
  * @addr: Address to count from
  *
  * This operation is atomic and cannot be reordered.
  * It also implies a memory barrier.
  */
 static __inline__ int test_and_set_bit(int nr, volatile void * addr)
 {
 	__u32 mask, oldbit;
 	volatile __u32 *a = addr;
 	unsigned long flags;
 	unsigned long tmp;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));

 	local_irq_save(flags);
 	__asm__ __volatile__ (
 		DCACHE_CLEAR("%0", "%1", "%2")
 		M32R_LOCK" %0, @%2;		\n\t"
 		"mv	%1, %0;			\n\t"
 		"and	%0, %3;			\n\t"
 		"or	%1, %3;			\n\t"
 		M32R_UNLOCK" %1, @%2;		\n\t"
 		: "=&r" (oldbit), "=&r" (tmp)
 		: "r" (a), "r" (mask)
 		: "memory"
 	);
 	local_irq_restore(flags);

 	return (oldbit != 0);
 }

 /**
  * __test_and_set_bit - Set a bit and return its old value
  * @nr: Bit to set
  * @addr: Address to count from
  *
  * This operation is non-atomic and can be reordered.
  * If two examples of this operation race, one can appear to succeed
  * but actually fail.  You must protect multiple accesses with a lock.
  */
 static __inline__ int __test_and_set_bit(int nr, volatile void * addr)
 {
 	__u32 mask, oldbit;
 	volatile __u32 *a = addr;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));
 	oldbit = (*a & mask);
 	*a |= mask;

 	return (oldbit != 0);
 }

 /**
  * test_and_clear_bit - Clear a bit and return its old value
  * @nr: Bit to set
  * @addr: Address to count from
  *
  * This operation is atomic and cannot be reordered.
  * It also implies a memory barrier.
  */
 static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
 {
 	__u32 mask, oldbit;
 	volatile __u32 *a = addr;
 	unsigned long flags;
 	unsigned long tmp;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));

 	local_irq_save(flags);

 	__asm__ __volatile__ (
 		DCACHE_CLEAR("%0", "%1", "%3")
 		M32R_LOCK" %0, @%3;		\n\t"
 		"mv	%1, %0;			\n\t"
 		"and	%0, %2;			\n\t"
 		"not	%2, %2;			\n\t"
 		"and	%1, %2;			\n\t"
 		M32R_UNLOCK" %1, @%3;		\n\t"
 		: "=&r" (oldbit), "=&r" (tmp), "+r" (mask)
 		: "r" (a)
 		: "memory"
 	);
 	local_irq_restore(flags);

 	return (oldbit != 0);
 }

 /**
  * __test_and_clear_bit - Clear a bit and return its old value
  * @nr: Bit to set
  * @addr: Address to count from
  *
  * This operation is non-atomic and can be reordered.
  * If two examples of this operation race, one can appear to succeed
  * but actually fail.  You must protect multiple accesses with a lock.
  */
 static __inline__ int __test_and_clear_bit(int nr, volatile void * addr)
 {
 	__u32 mask, oldbit;
 	volatile __u32 *a = addr;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));
 	oldbit = (*a & mask);
 	*a &= ~mask;

 	return (oldbit != 0);
 }

 /* WARNING: non atomic and it can be reordered! */
 static __inline__ int __test_and_change_bit(int nr, volatile void * addr)
 {
 	__u32 mask, oldbit;
 	volatile __u32 *a = addr;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));
 	oldbit = (*a & mask);
 	*a ^= mask;

 	return (oldbit != 0);
 }

 /**
  * test_and_change_bit - Change a bit and return its old value
  * @nr: Bit to set
  * @addr: Address to count from
  *
  * This operation is atomic and cannot be reordered.
  * It also implies a memory barrier.
  */
 static __inline__ int test_and_change_bit(int nr, volatile void * addr)
 {
 	__u32 mask, oldbit;
 	volatile __u32 *a = addr;
 	unsigned long flags;
 	unsigned long tmp;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));

 	local_irq_save(flags);
 	__asm__ __volatile__ (
 		DCACHE_CLEAR("%0", "%1", "%2")
 		M32R_LOCK" %0, @%2;		\n\t"
 		"mv	%1, %0;			\n\t"
 		"and	%0, %3;			\n\t"
 		"xor	%1, %3;			\n\t"
 		M32R_UNLOCK" %1, @%2;		\n\t"
 		: "=&r" (oldbit), "=&r" (tmp)
 		: "r" (a), "r" (mask)
 		: "memory"
 	);
 	local_irq_restore(flags);

 	return (oldbit != 0);
 }

 /**
  * test_bit - Determine whether a bit is set
  * @nr: bit number to test
  * @addr: Address to start counting from
  */
 static __inline__ int test_bit(int nr, const volatile void * addr)
 {
 	__u32 mask;
 	const volatile __u32 *a = addr;

 	a += (nr >> 5);
 	mask = (1 << (nr & 0x1F));

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

 /**
  * 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)
 {
 	int k;

 	word = ~word;
 	k = 0;
 	if (!(word & 0x0000ffff)) { k += 16; word >>= 16; }
 	if (!(word & 0x000000ff)) { k += 8; word >>= 8; }
 	if (!(word & 0x0000000f)) { k += 4; word >>= 4; }
 	if (!(word & 0x00000003)) { k += 2; word >>= 2; }
 	if (!(word & 0x00000001)) { k += 1; }

 	return k;
 }

 /**
  * find_first_zero_bit - find the first zero bit in a memory region
  * @addr: The address to start the search at
  * @size: The maximum size to search
  *
  * Returns the bit-number of the first zero bit, not the number of the byte
  * containing a bit.
  */

 #define find_first_zero_bit(addr, size) \
 	find_next_zero_bit((addr), (size), 0)

 /**
  * find_next_zero_bit - find the first zero bit in a memory region
  * @addr: The address to base the search on
  * @offset: The bitnumber to start searching at
  * @size: The maximum size to search
  */
 static __inline__ int find_next_zero_bit(const unsigned long *addr,
 					 int size, int offset)
 {
 	const unsigned long *p = addr + (offset >> 5);
 	unsigned long result = offset & ~31UL;
 	unsigned long tmp;

 	if (offset >= size)
 		return size;
 	size -= result;
 	offset &= 31UL;
 	if (offset) {
 		tmp = *(p++);
 		tmp |= ~0UL >> (32-offset);
 		if (size < 32)
 			goto found_first;
 		if (~tmp)
 			goto found_middle;
 		size -= 32;
 		result += 32;
 	}
 	while (size & ~31UL) {
 		if (~(tmp = *(p++)))
 			goto found_middle;
 		result += 32;
 		size -= 32;
 	}
 	if (!size)
 		return result;
 	tmp = *p;

 found_first:
 	tmp |= ~0UL << size;
 found_middle:
 	return result + ffz(tmp);
 }

 /**
  * __ffs - find first bit in word.
  * @word: The word to search
  *
  * Undefined if no bit exists, so code should check against 0 first.
  */
 static __inline__ unsigned long __ffs(unsigned long word)
 {
 	int k = 0;

 	if (!(word & 0x0000ffff)) { k += 16; word >>= 16; }
 	if (!(word & 0x000000ff)) { k += 8; word >>= 8; }
 	if (!(word & 0x0000000f)) { k += 4; word >>= 4; }
 	if (!(word & 0x00000003)) { k += 2; word >>= 2; }
 	if (!(word & 0x00000001)) { k += 1;}

 	return k;
 }

 /*
  * fls: find last bit set.
  */
 #define fls(x) generic_fls(x)

 #ifdef __KERNEL__

 /*
  * Every architecture must define this function. It's the fastest
  * way of searching a 140-bit bitmap where the first 100 bits are
  * unlikely to be set. It's guaranteed that at least one of the 140
  * bits is cleared.
  */
 static inline int sched_find_first_bit(unsigned long *b)
 {
 	if (unlikely(b[0]))
 		return __ffs(b[0]);
 	if (unlikely(b[1]))
 		return __ffs(b[1]) + 32;
 	if (unlikely(b[2]))
 		return __ffs(b[2]) + 64;
 	if (b[3])
 		return __ffs(b[3]) + 96;
 	return __ffs(b[4]) + 128;
 }

 /**
  * find_next_bit - find the first set bit in a memory region
  * @addr: The address to base the search on
  * @offset: The bitnumber to start searching at
  * @size: The maximum size to search
  */
 static inline unsigned long find_next_bit(const unsigned long *addr,
 	unsigned long size, unsigned long offset)
 {
 	unsigned int *p = ((unsigned int *) addr) + (offset >> 5);
 	unsigned int result = offset & ~31UL;
 	unsigned int tmp;

 	if (offset >= size)
 		return size;
 	size -= result;
 	offset &= 31UL;
 	if (offset) {
 		tmp = *p++;
 		tmp &= ~0UL << offset;
 		if (size < 32)
 			goto found_first;
 		if (tmp)
 			goto found_middle;
 		size -= 32;
 		result += 32;
 	}
 	while (size >= 32) {
 		if ((tmp = *p++) != 0)
 			goto found_middle;
 		result += 32;
 		size -= 32;
 	}
 	if (!size)
 		return result;
 	tmp = *p;

 found_first:
 	tmp &= ~0UL >> (32 - size);
 	if (tmp == 0UL)        /* Are any bits set? */
 		return result + size; /* Nope. */
 found_middle:
 	return result + __ffs(tmp);
 }

 /**
  * find_first_bit - find the first set bit in a memory region
  * @addr: The address to start the search at
  * @size: The maximum size to search
  *
  * Returns the bit-number of the first set bit, not the number of the byte
  * containing a bit.
  */
 #define find_first_bit(addr, size) \
 	find_next_bit((addr), (size), 0)

 /**
  * ffs - find first bit set
  * @x: the word to search
  *
  * This is defined the same way as
  * the libc and compiler builtin ffs routines, therefore
  * differs in spirit from the above ffz (man ffs).
  */
 #define ffs(x)	generic_ffs(x)

 /**
  * hweightN - returns the hamming weight of a N-bit word
  * @x: the word to weigh
  *
  * The Hamming Weight of a number is the total number of bits set in it.
  */

 #define hweight32(x)	generic_hweight32(x)
 #define hweight16(x)	generic_hweight16(x)
 #define hweight8(x)	generic_hweight8(x)

 #endif /* __KERNEL__ */

 #ifdef __KERNEL__

 /*
  * ext2_XXXX function
  * orig: include/asm-sh/bitops.h
  */

 #ifdef __LITTLE_ENDIAN__
 #define ext2_set_bit			test_and_set_bit
 #define ext2_clear_bit			__test_and_clear_bit
 #define ext2_test_bit			test_bit
 #define ext2_find_first_zero_bit	find_first_zero_bit
 #define ext2_find_next_zero_bit		find_next_zero_bit
 #else
 static inline int ext2_set_bit(int nr, volatile void * addr)
 {
 	__u8 mask, oldbit;
 	volatile __u8 *a = addr;

 	a += (nr >> 3);
 	mask = (1 << (nr & 0x07));
 	oldbit = (*a & mask);
 	*a |= mask;

 	return (oldbit != 0);
 }

 static inline int ext2_clear_bit(int nr, volatile void * addr)
 {
 	__u8 mask, oldbit;
 	volatile __u8 *a = addr;

 	a += (nr >> 3);
 	mask = (1 << (nr & 0x07));
 	oldbit = (*a & mask);
 	*a &= ~mask;

 	return (oldbit != 0);
 }

 static inline int ext2_test_bit(int nr, const volatile void * addr)
 {
 	__u32 mask;
 	const volatile __u8 *a = addr;

 	a += (nr >> 3);
 	mask = (1 << (nr & 0x07));

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

 #define ext2_find_first_zero_bit(addr, size) \
 	ext2_find_next_zero_bit((addr), (size), 0)

 static inline unsigned long ext2_find_next_zero_bit(void *addr,
 	unsigned long size, unsigned long offset)
 {
 	unsigned long *p = ((unsigned long *) addr) + (offset >> 5);
 	unsigned long result = offset & ~31UL;
 	unsigned long tmp;

 	if (offset >= size)
 		return size;
 	size -= result;
 	offset &= 31UL;
 	if(offset) {
 		/* We hold the little endian value in tmp, but then the
 		 * shift is illegal. So we could keep a big endian value
 		 * in tmp, like this:
 		 *
 		 * tmp = __swab32(*(p++));
 		 * tmp |= ~0UL >> (32-offset);
 		 *
 		 * but this would decrease preformance, so we change the
 		 * shift:
 		 */
 		tmp = *(p++);
 		tmp |= __swab32(~0UL >> (32-offset));
 		if(size < 32)
 			goto found_first;
 		if(~tmp)
 			goto found_middle;
 		size -= 32;
 		result += 32;
 	}
 	while(size & ~31UL) {
 		if(~(tmp = *(p++)))
 			goto found_middle;
 		result += 32;
 		size -= 32;
 	}
 	if(!size)
 		return result;
 	tmp = *p;

 found_first:
 	/* tmp is little endian, so we would have to swab the shift,
 	 * see above. But then we have to swab tmp below for ffz, so
 	 * we might as well do this here.
 	 */
 	return result + ffz(__swab32(tmp) | (~0UL << size));
 found_middle:
 	return result + ffz(__swab32(tmp));
 }
 #endif

 #define ext2_set_bit_atomic(lock, nr, addr)		\
 	({						\
 		int ret;				\
 		spin_lock(lock);			\
 		ret = ext2_set_bit((nr), (addr));	\
 		spin_unlock(lock);			\
 		ret;					\
 	})

 #define ext2_clear_bit_atomic(lock, nr, addr)		\
 	({						\
 		int ret;				\
 		spin_lock(lock);			\
 		ret = ext2_clear_bit((nr), (addr));	\
 		spin_unlock(lock);			\
 		ret;					\
 	})

 /* Bitmap functions for the minix filesystem.  */
 #define minix_test_and_set_bit(nr,addr)		__test_and_set_bit(nr,addr)
 #define minix_set_bit(nr,addr)			__set_bit(nr,addr)
 #define minix_test_and_clear_bit(nr,addr)	__test_and_clear_bit(nr,addr)
 #define minix_test_bit(nr,addr) test_bit(nr,addr)
 #define minix_find_first_zero_bit(addr,size)	find_first_zero_bit(addr,size)

 #endif /* __KERNEL__ */

 #endif /* _ASM_M32R_BITOPS_H */
	#ifndef _ASM_M32R_BITOPS_H
	#define _ASM_M32R_BITOPS_H

	/*
	* linux/include/asm-m32r/bitops.h
	*
	* Copyright 1992, Linus Torvalds.
	*
	* M32R version:
	* Copyright (C) 2001, 2002 Hitoshi Yamamoto
	* Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org>
	*/

	#include <linux/config.h>
	#include <linux/compiler.h>
	#include <asm/assembler.h>
	#include <asm/system.h>
	#include <asm/byteorder.h>
	#include <asm/types.h>

	/*
	* These have to be done with inline assembly: that way the bit-setting
	* is guaranteed to be atomic. All bit operations return 0 if the bit
	* was cleared before the operation and != 0 if it was not.
	*
	* bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
	*/

	/**
	* set_bit - Atomically set a bit in memory
	* @nr: the bit to set
	* @addr: the address to start counting from
	*
	* This function is atomic and may not be reordered. See __set_bit()
	* if you do not require the atomic guarantees.
	* Note that @nr may be almost arbitrarily large; this function is not
	* restricted to acting on a single-word quantity.
	*/
	static __inline__ void set_bit(int nr, volatile void * addr)
	{
	__u32 mask;
	volatile __u32 *a = addr;
	unsigned long flags;
	unsigned long tmp;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));

	local_irq_save(flags);
	__asm__ __volatile__ (
	DCACHE_CLEAR("%0", "r6", "%1")
	M32R_LOCK" %0, @%1; \n\t"
	"or %0, %2; \n\t"
	M32R_UNLOCK" %0, @%1; \n\t"
	: "=&r" (tmp)
	: "r" (a), "r" (mask)
	: "memory"
	#ifdef CONFIG_CHIP_M32700_TS1
	, "r6"
	#endif /* CONFIG_CHIP_M32700_TS1 */
	);
	local_irq_restore(flags);
	}

	/**
	* __set_bit - Set a bit in memory
	* @nr: the bit to set
	* @addr: the address to start counting from
	*
	* Unlike set_bit(), this function is non-atomic and may be reordered.
	* If it's called on the same region of memory simultaneously, the effect
	* may be that only one operation succeeds.
	*/
	static __inline__ void __set_bit(int nr, volatile void * addr)
	{
	__u32 mask;
	volatile __u32 *a = addr;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));
	*a \|= mask;
	}

	/**
	* clear_bit - Clears a bit in memory
	* @nr: Bit to clear
	* @addr: Address to start counting from
	*
	* clear_bit() is atomic and may not be reordered. However, it does
	* not contain a memory barrier, so if it is used for locking purposes,
	* you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit()
	* in order to ensure changes are visible on other processors.
	*/
	static __inline__ void clear_bit(int nr, volatile void * addr)
	{
	__u32 mask;
	volatile __u32 *a = addr;
	unsigned long flags;
	unsigned long tmp;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));

	local_irq_save(flags);

	__asm__ __volatile__ (
	DCACHE_CLEAR("%0", "r6", "%1")
	M32R_LOCK" %0, @%1; \n\t"
	"and %0, %2; \n\t"
	M32R_UNLOCK" %0, @%1; \n\t"
	: "=&r" (tmp)
	: "r" (a), "r" (~mask)
	: "memory"
	#ifdef CONFIG_CHIP_M32700_TS1
	, "r6"
	#endif /* CONFIG_CHIP_M32700_TS1 */
	);
	local_irq_restore(flags);
	}

	static __inline__ void __clear_bit(int nr, volatile unsigned long * addr)
	{
	unsigned long mask;
	volatile unsigned long *a = addr;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));
	*a &= ~mask;
	}

	#define smp_mb__before_clear_bit() barrier()
	#define smp_mb__after_clear_bit() barrier()

	/**
	* __change_bit - Toggle a bit in memory
	* @nr: the bit to set
	* @addr: the address to start counting from
	*
	* Unlike change_bit(), this function is non-atomic and may be reordered.
	* If it's called on the same region of memory simultaneously, the effect
	* may be that only one operation succeeds.
	*/
	static __inline__ void __change_bit(int nr, volatile void * addr)
	{
	__u32 mask;
	volatile __u32 *a = addr;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));
	*a ^= mask;
	}

	/**
	* change_bit - Toggle a bit in memory
	* @nr: Bit to clear
	* @addr: Address to start counting from
	*
	* change_bit() is atomic and may not be reordered.
	* Note that @nr may be almost arbitrarily large; this function is not
	* restricted to acting on a single-word quantity.
	*/
	static __inline__ void change_bit(int nr, volatile void * addr)
	{
	__u32 mask;
	volatile __u32 *a = addr;
	unsigned long flags;
	unsigned long tmp;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));

	local_irq_save(flags);
	__asm__ __volatile__ (
	DCACHE_CLEAR("%0", "r6", "%1")
	M32R_LOCK" %0, @%1; \n\t"
	"xor %0, %2; \n\t"
	M32R_UNLOCK" %0, @%1; \n\t"
	: "=&r" (tmp)
	: "r" (a), "r" (mask)
	: "memory"
	#ifdef CONFIG_CHIP_M32700_TS1
	, "r6"
	#endif /* CONFIG_CHIP_M32700_TS1 */
	);
	local_irq_restore(flags);
	}

	/**
	* test_and_set_bit - Set a bit and return its old value
	* @nr: Bit to set
	* @addr: Address to count from
	*
	* This operation is atomic and cannot be reordered.
	* It also implies a memory barrier.
	*/
	static __inline__ int test_and_set_bit(int nr, volatile void * addr)
	{
	__u32 mask, oldbit;
	volatile __u32 *a = addr;
	unsigned long flags;
	unsigned long tmp;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));

	local_irq_save(flags);
	__asm__ __volatile__ (
	DCACHE_CLEAR("%0", "%1", "%2")
	M32R_LOCK" %0, @%2; \n\t"
	"mv %1, %0; \n\t"
	"and %0, %3; \n\t"
	"or %1, %3; \n\t"
	M32R_UNLOCK" %1, @%2; \n\t"
	: "=&r" (oldbit), "=&r" (tmp)
	: "r" (a), "r" (mask)
	: "memory"
	);
	local_irq_restore(flags);

	return (oldbit != 0);
	}

	/**
	* __test_and_set_bit - Set a bit and return its old value
	* @nr: Bit to set
	* @addr: Address to count from
	*
	* This operation is non-atomic and can be reordered.
	* If two examples of this operation race, one can appear to succeed
	* but actually fail. You must protect multiple accesses with a lock.
	*/
	static __inline__ int __test_and_set_bit(int nr, volatile void * addr)
	{
	__u32 mask, oldbit;
	volatile __u32 *a = addr;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));
	oldbit = (*a & mask);
	*a \|= mask;

	return (oldbit != 0);
	}

	/**
	* test_and_clear_bit - Clear a bit and return its old value
	* @nr: Bit to set
	* @addr: Address to count from
	*
	* This operation is atomic and cannot be reordered.
	* It also implies a memory barrier.
	*/
	static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
	{
	__u32 mask, oldbit;
	volatile __u32 *a = addr;
	unsigned long flags;
	unsigned long tmp;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));

	local_irq_save(flags);

	__asm__ __volatile__ (
	DCACHE_CLEAR("%0", "%1", "%3")
	M32R_LOCK" %0, @%3; \n\t"
	"mv %1, %0; \n\t"
	"and %0, %2; \n\t"
	"not %2, %2; \n\t"
	"and %1, %2; \n\t"
	M32R_UNLOCK" %1, @%3; \n\t"
	: "=&r" (oldbit), "=&r" (tmp), "+r" (mask)
	: "r" (a)
	: "memory"
	);
	local_irq_restore(flags);

	return (oldbit != 0);
	}

	/**
	* __test_and_clear_bit - Clear a bit and return its old value
	* @nr: Bit to set
	* @addr: Address to count from
	*
	* This operation is non-atomic and can be reordered.
	* If two examples of this operation race, one can appear to succeed
	* but actually fail. You must protect multiple accesses with a lock.
	*/
	static __inline__ int __test_and_clear_bit(int nr, volatile void * addr)
	{
	__u32 mask, oldbit;
	volatile __u32 *a = addr;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));
	oldbit = (*a & mask);
	*a &= ~mask;

	return (oldbit != 0);
	}

	/* WARNING: non atomic and it can be reordered! */
	static __inline__ int __test_and_change_bit(int nr, volatile void * addr)
	{
	__u32 mask, oldbit;
	volatile __u32 *a = addr;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));
	oldbit = (*a & mask);
	*a ^= mask;

	return (oldbit != 0);
	}

	/**
	* test_and_change_bit - Change a bit and return its old value
	* @nr: Bit to set
	* @addr: Address to count from
	*
	* This operation is atomic and cannot be reordered.
	* It also implies a memory barrier.
	*/
	static __inline__ int test_and_change_bit(int nr, volatile void * addr)
	{
	__u32 mask, oldbit;
	volatile __u32 *a = addr;
	unsigned long flags;
	unsigned long tmp;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));

	local_irq_save(flags);
	__asm__ __volatile__ (
	DCACHE_CLEAR("%0", "%1", "%2")
	M32R_LOCK" %0, @%2; \n\t"
	"mv %1, %0; \n\t"
	"and %0, %3; \n\t"
	"xor %1, %3; \n\t"
	M32R_UNLOCK" %1, @%2; \n\t"
	: "=&r" (oldbit), "=&r" (tmp)
	: "r" (a), "r" (mask)
	: "memory"
	);
	local_irq_restore(flags);

	return (oldbit != 0);
	}

	/**
	* test_bit - Determine whether a bit is set
	* @nr: bit number to test
	* @addr: Address to start counting from
	*/
	static __inline__ int test_bit(int nr, const volatile void * addr)
	{
	__u32 mask;
	const volatile __u32 *a = addr;

	a += (nr >> 5);
	mask = (1 << (nr & 0x1F));

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

	/**
	* 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)
	{
	int k;

	word = ~word;
	k = 0;
	if (!(word & 0x0000ffff)) { k += 16; word >>= 16; }
	if (!(word & 0x000000ff)) { k += 8; word >>= 8; }
	if (!(word & 0x0000000f)) { k += 4; word >>= 4; }
	if (!(word & 0x00000003)) { k += 2; word >>= 2; }
	if (!(word & 0x00000001)) { k += 1; }

	return k;
	}

	/**
	* find_first_zero_bit - find the first zero bit in a memory region
	* @addr: The address to start the search at
	* @size: The maximum size to search
	*
	* Returns the bit-number of the first zero bit, not the number of the byte
	* containing a bit.
	*/

	#define find_first_zero_bit(addr, size) \
	find_next_zero_bit((addr), (size), 0)

	/**
	* find_next_zero_bit - find the first zero bit in a memory region
	* @addr: The address to base the search on
	* @offset: The bitnumber to start searching at
	* @size: The maximum size to search
	*/
	static __inline__ int find_next_zero_bit(const unsigned long *addr,
	int size, int offset)
	{
	const unsigned long *p = addr + (offset >> 5);
	unsigned long result = offset & ~31UL;
	unsigned long tmp;

	if (offset >= size)
	return size;
	size -= result;
	offset &= 31UL;
	if (offset) {
	tmp = *(p++);
	tmp \|= ~0UL >> (32-offset);
	if (size < 32)
	goto found_first;
	if (~tmp)
	goto found_middle;
	size -= 32;
	result += 32;
	}
	while (size & ~31UL) {
	if (~(tmp = *(p++)))
	goto found_middle;
	result += 32;
	size -= 32;
	}
	if (!size)
	return result;
	tmp = *p;

	found_first:
	tmp \|= ~0UL << size;
	found_middle:
	return result + ffz(tmp);
	}

	/**
	* __ffs - find first bit in word.
	* @word: The word to search
	*
	* Undefined if no bit exists, so code should check against 0 first.
	*/
	static __inline__ unsigned long __ffs(unsigned long word)
	{
	int k = 0;

	if (!(word & 0x0000ffff)) { k += 16; word >>= 16; }
	if (!(word & 0x000000ff)) { k += 8; word >>= 8; }
	if (!(word & 0x0000000f)) { k += 4; word >>= 4; }
	if (!(word & 0x00000003)) { k += 2; word >>= 2; }
	if (!(word & 0x00000001)) { k += 1;}

	return k;
	}

	/*
	* fls: find last bit set.
	*/
	#define fls(x) generic_fls(x)

	#ifdef __KERNEL__

	/*
	* Every architecture must define this function. It's the fastest
	* way of searching a 140-bit bitmap where the first 100 bits are
	* unlikely to be set. It's guaranteed that at least one of the 140
	* bits is cleared.
	*/
	static inline int sched_find_first_bit(unsigned long *b)
	{
	if (unlikely(b[0]))
	return __ffs(b[0]);
	if (unlikely(b[1]))
	return __ffs(b[1]) + 32;
	if (unlikely(b[2]))
	return __ffs(b[2]) + 64;
	if (b[3])
	return __ffs(b[3]) + 96;
	return __ffs(b[4]) + 128;
	}

	/**
	* find_next_bit - find the first set bit in a memory region
	* @addr: The address to base the search on
	* @offset: The bitnumber to start searching at
	* @size: The maximum size to search
	*/
	static inline unsigned long find_next_bit(const unsigned long *addr,
	unsigned long size, unsigned long offset)
	{
	unsigned int p = ((unsigned int ) addr) + (offset >> 5);
	unsigned int result = offset & ~31UL;
	unsigned int tmp;

	if (offset >= size)
	return size;
	size -= result;
	offset &= 31UL;
	if (offset) {
	tmp = *p++;
	tmp &= ~0UL << offset;
	if (size < 32)
	goto found_first;
	if (tmp)
	goto found_middle;
	size -= 32;
	result += 32;
	}
	while (size >= 32) {
	if ((tmp = *p++) != 0)
	goto found_middle;
	result += 32;
	size -= 32;
	}
	if (!size)
	return result;
	tmp = *p;

	found_first:
	tmp &= ~0UL >> (32 - size);
	if (tmp == 0UL) /* Are any bits set? */
	return result + size; /* Nope. */
	found_middle:
	return result + __ffs(tmp);
	}

	/**
	* find_first_bit - find the first set bit in a memory region
	* @addr: The address to start the search at
	* @size: The maximum size to search
	*
	* Returns the bit-number of the first set bit, not the number of the byte
	* containing a bit.
	*/
	#define find_first_bit(addr, size) \
	find_next_bit((addr), (size), 0)

	/**
	* ffs - find first bit set
	* @x: the word to search
	*
	* This is defined the same way as
	* the libc and compiler builtin ffs routines, therefore
	* differs in spirit from the above ffz (man ffs).
	*/
	#define ffs(x) generic_ffs(x)

	/**
	* hweightN - returns the hamming weight of a N-bit word
	* @x: the word to weigh
	*
	* The Hamming Weight of a number is the total number of bits set in it.
	*/

	#define hweight32(x) generic_hweight32(x)
	#define hweight16(x) generic_hweight16(x)
	#define hweight8(x) generic_hweight8(x)

	#endif /* __KERNEL__ */

	#ifdef __KERNEL__

	/*
	* ext2_XXXX function
	* orig: include/asm-sh/bitops.h
	*/

	#ifdef __LITTLE_ENDIAN__
	#define ext2_set_bit test_and_set_bit
	#define ext2_clear_bit __test_and_clear_bit
	#define ext2_test_bit test_bit
	#define ext2_find_first_zero_bit find_first_zero_bit
	#define ext2_find_next_zero_bit find_next_zero_bit
	#else
	static inline int ext2_set_bit(int nr, volatile void * addr)
	{
	__u8 mask, oldbit;
	volatile __u8 *a = addr;

	a += (nr >> 3);
	mask = (1 << (nr & 0x07));
	oldbit = (*a & mask);
	*a \|= mask;

	return (oldbit != 0);
	}

	static inline int ext2_clear_bit(int nr, volatile void * addr)
	{
	__u8 mask, oldbit;
	volatile __u8 *a = addr;

	a += (nr >> 3);
	mask = (1 << (nr & 0x07));
	oldbit = (*a & mask);
	*a &= ~mask;

	return (oldbit != 0);
	}

	static inline int ext2_test_bit(int nr, const volatile void * addr)
	{
	__u32 mask;
	const volatile __u8 *a = addr;

	a += (nr >> 3);
	mask = (1 << (nr & 0x07));

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

	#define ext2_find_first_zero_bit(addr, size) \
	ext2_find_next_zero_bit((addr), (size), 0)

	static inline unsigned long ext2_find_next_zero_bit(void *addr,
	unsigned long size, unsigned long offset)
	{
	unsigned long p = ((unsigned long ) addr) + (offset >> 5);
	unsigned long result = offset & ~31UL;
	unsigned long tmp;

	if (offset >= size)
	return size;
	size -= result;
	offset &= 31UL;
	if(offset) {
	/* We hold the little endian value in tmp, but then the
	* shift is illegal. So we could keep a big endian value
	* in tmp, like this:
	*
	* tmp = __swab32(*(p++));
	* tmp \|= ~0UL >> (32-offset);
	*
	* but this would decrease preformance, so we change the
	* shift:
	*/
	tmp = *(p++);
	tmp \|= __swab32(~0UL >> (32-offset));
	if(size < 32)
	goto found_first;
	if(~tmp)
	goto found_middle;
	size -= 32;
	result += 32;
	}
	while(size & ~31UL) {
	if(~(tmp = *(p++)))
	goto found_middle;
	result += 32;
	size -= 32;
	}
	if(!size)
	return result;
	tmp = *p;

	found_first:
	/* tmp is little endian, so we would have to swab the shift,
	* see above. But then we have to swab tmp below for ffz, so
	* we might as well do this here.
	*/
	return result + ffz(__swab32(tmp) \| (~0UL << size));
	found_middle:
	return result + ffz(__swab32(tmp));
	}
	#endif

	#define ext2_set_bit_atomic(lock, nr, addr) \
	({ \
	int ret; \
	spin_lock(lock); \
	ret = ext2_set_bit((nr), (addr)); \
	spin_unlock(lock); \
	ret; \
	})

	#define ext2_clear_bit_atomic(lock, nr, addr) \
	({ \
	int ret; \
	spin_lock(lock); \
	ret = ext2_clear_bit((nr), (addr)); \
	spin_unlock(lock); \
	ret; \
	})

	/* Bitmap functions for the minix filesystem. */
	#define minix_test_and_set_bit(nr,addr) __test_and_set_bit(nr,addr)
	#define minix_set_bit(nr,addr) __set_bit(nr,addr)
	#define minix_test_and_clear_bit(nr,addr) __test_and_clear_bit(nr,addr)
	#define minix_test_bit(nr,addr) test_bit(nr,addr)
	#define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size)

	#endif /* __KERNEL__ */

	#endif /* _ASM_M32R_BITOPS_H */