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#ifndef __ASM_MIPS_DELAY_H

#define __ASM_MIPS_DELAY_H

extern __inline__ void __delay(int loops)

{

        __asm__ __volatile__ (

                ".set\tnoreorder\n\t"

                ".set\tnoat\n\t"

                "1:\tbne\t$0,%0,1b\n\t"

                "subu\t%0,%0,1\n\t"

                ".set\tat\n\t"

                ".set\treorder"

                :"=r" (loops)

                :"0" (loops));

}

/*

 * 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__("multu\t%0,%1\n\t"

                "mfhi\t%0"

                :"=r" (usecs)

                :"0" (usecs),"r" (loops_per_sec));

        __delay(usecs);

}

/*

 * The different variants for 32/64 bit are pure paranoia. The typical

 * range of numbers that appears for MIPS machines avoids overflows.

 */

extern __inline__ unsigned long muldiv(unsigned long a, unsigned long b, unsigned long c)

{

        return (a*b)/c;

}

#endif /* __ASM_MIPS_DELAY_H */