Merge ../linus
[pv_ops_mirror.git] / include / asm-sparc / delay.h
blob48aa70eef9975c356c0cc5c6706869fdfc30934f
1 /* $Id: delay.h,v 1.11 2001/01/01 01:46:15 davem Exp $
2 * delay.h: Linux delay routines on the Sparc.
4 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu).
5 */
7 #ifndef __SPARC_DELAY_H
8 #define __SPARC_DELAY_H
10 #include <asm/cpudata.h>
12 static inline void __delay(unsigned long loops)
14 __asm__ __volatile__("cmp %0, 0\n\t"
15 "1: bne 1b\n\t"
16 "subcc %0, 1, %0\n" :
17 "=&r" (loops) :
18 "0" (loops) :
19 "cc");
22 /* This is too messy with inline asm on the Sparc. */
23 extern void __udelay(unsigned long usecs, unsigned long lpj);
24 extern void __ndelay(unsigned long nsecs, unsigned long lpj);
26 #ifdef CONFIG_SMP
27 #define __udelay_val cpu_data(smp_processor_id()).udelay_val
28 #else /* SMP */
29 #define __udelay_val loops_per_jiffy
30 #endif /* SMP */
31 #define udelay(__usecs) __udelay(__usecs, __udelay_val)
32 #define ndelay(__nsecs) __ndelay(__nsecs, __udelay_val)
34 #endif /* defined(__SPARC_DELAY_H) */