#ifndef _LINUX_DELAY_H#define _LINUX_DELAY_H/* * Copyright (C) 1993 Linus Torvalds * * Delay routines, using a pre-computed "loops_per_second" value. */extern unsigned long loops_per_sec;extern __inline__ void __delay(int loops){	__asm__(".align 2,0x90\n1:\tdecl %0\n\tjns 1b": :"a" (loops):"ax");}/* * division by multiplication: you don't have to worry about * loss of precision. * * Use only for very small delays ( < 1 msec).  Should probably use a * lookup table, really, as the multiplications take much too long with * short delays.  This is a "reasonable" implementation, though (and the * first constant multiplications gets optimized away if the delay is * a constant) */extern __inline__ void udelay(unsigned long usecs){	usecs *= 0x000010c6;		/* 2**32 / 1000000 */	__asm__("mull %0"		:"=d" (usecs)		:"a" (usecs),"0" (loops_per_sec)		:"ax");	__delay(usecs);}#endif