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[/] [or1k/] [tags/] [before_ORP/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-i960/] [delay.h] - Rev 901
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#ifndef _I960_DELAY_H #define _I960_DELAY_H extern unsigned long loops_per_sec; #include <linux/kernel.h> #include <linux/config.h> /* * Copyright (C) 1995 Erik Walthinsen (omega@cse.ogi.edu) * * Delay routines, using a pre-computed "loops_per_second" value. */ extern __inline__ void __delay(unsigned long loops) { while (loops--); } /* * 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 *= loops_per_sec; usecs /= 1000000; __delay(usecs); } #define muldiv(a, b, c) (((a)*(b))/(c)) #endif /* defined(_I960_DELAY_H) */
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