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#ifndef __SPARC_DELAY_H
#define __SPARC_DELAY_H
extern unsigned long loops_per_sec;
/*
* Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu).
*
* Delay quick inlined code using 'loops_per_second' which is
* calculated in calibrate_delay() in main.c (ie. BogoMIPS :-)
*/
extern __inline__ void __delay(unsigned int loops)
{
__asm__ __volatile__("\n1:\tcmp %0, 0\n\t"
"bne,a 1b\n\t"
"sub %0, 1, %0\n": "=&r" (loops) : "0" (loops));
}
/* udelay(usecs) is used for very short delays up to 1 millisecond. */
extern __inline__ void udelay(unsigned int usecs)
{
usecs *= 0x000010c6; /* Sparc is 32-bit just like ix86 */
__asm__("sethi %hi(_loops_per_sec), %o1\n\t"
"ld [%o1 + %lo(_loops_per_sec)], %o1\n\t"
"call ___delay\n\t"
"umul %o1, %o0, %o0\n\t");
}
/* calibrate_delay() wants this... */
extern __inline__ unsigned long muldiv(unsigned long a, unsigned long b, unsigned long c)
{
return ((a*b)/c);
}
#endif /* defined(__SPARC_DELAY_H) */
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