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/* $Id: delay.h,v 1.1.1.1 2004-04-15 03:00:53 phoenix Exp $

 * delay.h: Linux delay routines on the V9.

 *

 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu).

 */

#ifndef __SPARC64_DELAY_H

#define __SPARC64_DELAY_H

#include <linux/config.h>

#include <linux/param.h>

#ifndef __ASSEMBLY__

#ifdef CONFIG_SMP

#include <asm/smp.h>

#else

extern unsigned long loops_per_jiffy;

#endif 

extern __inline__ void __delay(unsigned long loops)

{

        __asm__ __volatile__(

"       b,pt    %%xcc, 1f\n"

"        cmp    %0, 0\n"

"       .align  32\n"

"1:\n"

"       bne,pt  %%xcc, 1b\n"

"        subcc  %0, 1, %0\n"

        : "=&r" (loops)

        : "0" (loops)

        : "cc");

}

extern __inline__ void __udelay(unsigned long usecs, unsigned long lps)

{

        usecs *= 0x00000000000010c6UL;          /* 2**32 / 1000000 */

        __asm__ __volatile__(

"       mulx    %1, %2, %0\n"

"       srlx    %0, 32, %0\n"

        : "=r" (usecs)

        : "r" (usecs), "r" (lps));

        __delay(usecs * HZ);

}

extern __inline__ void __ndelay(unsigned long usecs, unsigned long lps)

{

        usecs *= 0x0000000000000005UL;          /* 2**32 / 10000 */

        __asm__ __volatile__(

"       mulx    %1, %2, %0\n"

"       srlx    %0, 32, %0\n"

        : "=r" (usecs)

        : "r" (usecs), "r" (lps));

        __delay(usecs * HZ);

}

#ifdef CONFIG_SMP

#define __udelay_val cpu_data[smp_processor_id()].udelay_val

#else

#define __udelay_val loops_per_jiffy

#endif

#define udelay(usecs) __udelay((usecs),__udelay_val)

#define ndelay(usecs) __ndelay((usecs),__udelay_val)

#endif /* !__ASSEMBLY__ */

#endif /* defined(__SPARC64_DELAY_H) */