[mirror_ubuntu-artful-kernel.git] / include / asm-x86_64 / delay.h

#ifndef _X8664_DELAY_H
#define _X8664_DELAY_H

/*
 * Copyright (C) 1993 Linus Torvalds
 *
 * Delay routines calling functions in arch/x86_64/lib/delay.c
 */
 
extern void __bad_udelay(void);
extern void __bad_ndelay(void);

extern void __udelay(unsigned long usecs);
extern void __ndelay(unsigned long usecs);
extern void __const_udelay(unsigned long usecs);
extern void __delay(unsigned long loops);

#define udelay(n) (__builtin_constant_p(n) ? \
	((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \
	__udelay(n))

#define ndelay(n) (__builtin_constant_p(n) ? \
       ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
       __ndelay(n))


#endif /* defined(_X8664_DELAY_H) */
Commit	Line	Data
1da177e4 LT	1	#ifndef _X8664_DELAY_H
	2	#define _X8664_DELAY_H
	3
	4	/*
	5	* Copyright (C) 1993 Linus Torvalds
	6	*
	7	* Delay routines calling functions in arch/x86_64/lib/delay.c
	8	*/
	9
	10	extern void __bad_udelay(void);
	11	extern void __bad_ndelay(void);
	12
	13	extern void __udelay(unsigned long usecs);
	14	extern void __ndelay(unsigned long usecs);
	15	extern void __const_udelay(unsigned long usecs);
	16	extern void __delay(unsigned long loops);
	17
	18	#define udelay(n) (__builtin_constant_p(n) ? \
	19	((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \
	20	__udelay(n))
	21
	22	#define ndelay(n) (__builtin_constant_p(n) ? \
	23	((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
	24	__ndelay(n))
	25
	26
	27	#endif /* defined(_X8664_DELAY_H) */