/* *	Precise Delay Loops for i386 * *	Copyright (C) 1993 Linus Torvalds *	Copyright (C) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz> * *	The __delay function must _NOT_ be inlined as its execution time *	depends wildly on alignment on many x86 processors. The additional *	jump magic is needed to get the timing stable on all the CPU's *	we have to worry about. */#include <linux/config.h>#include <linux/sched.h>#include <linux/delay.h>#include <linux/module.h>#include <asm/processor.h>#include <asm/delay.h>#include <asm/timer.h>#ifdef CONFIG_SMP#include <asm/smp.h>#endifextern struct timer_opts* timer;void __delay(unsigned long loops){	cur_timer->delay(loops);}inline void __const_udelay(unsigned long xloops){	int d0;	xloops *= 4;	__asm__("mull %0"		:"=d" (xloops), "=&a" (d0)		:"1" (xloops),"0" (cpu_data[raw_smp_processor_id()].loops_per_jiffy * (HZ/4)));        __delay(++xloops);}void __udelay(unsigned long usecs){	__const_udelay(usecs * 0x000010c7);  /* 2**32 / 1000000 (rounded up) */}void __ndelay(unsigned long nsecs){	__const_udelay(nsecs * 0x00005);  /* 2**32 / 1000000000 (rounded up) */}EXPORT_SYMBOL(__delay);EXPORT_SYMBOL(__const_udelay);EXPORT_SYMBOL(__udelay);EXPORT_SYMBOL(__ndelay);