1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * delay.h: Linux delay routines on the Sparc.
 4 *
 5 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu).
 6 */
 7
 8#ifndef __SPARC_DELAY_H
 9#define __SPARC_DELAY_H
10
11#include <asm/cpudata.h>
12
13static inline void __delay(unsigned long loops)
14{
15	__asm__ __volatile__("cmp %0, 0\n\t"
16			     "1: bne 1b\n\t"
17			     "subcc %0, 1, %0\n" :
18			     "=&r" (loops) :
19			     "0" (loops) :
20			     "cc");
21}
22
23/* This is too messy with inline asm on the Sparc. */
24void __udelay(unsigned long usecs, unsigned long lpj);
25void __ndelay(unsigned long nsecs, unsigned long lpj);
26
27#ifdef CONFIG_SMP
28#define __udelay_val	cpu_data(smp_processor_id()).udelay_val
29#else /* SMP */
30#define __udelay_val	loops_per_jiffy
31#endif /* SMP */
32#define udelay(__usecs)	__udelay(__usecs, __udelay_val)
33#define ndelay(__nsecs)	__ndelay(__nsecs, __udelay_val)
34
35#endif /* defined(__SPARC_DELAY_H) */

 
 1/*
 2 * delay.h: Linux delay routines on the Sparc.
 3 *
 4 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu).
 5 */
 6
 7#ifndef __SPARC_DELAY_H
 8#define __SPARC_DELAY_H
 9
10#include <asm/cpudata.h>
11
12static inline void __delay(unsigned long loops)
13{
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");
20}
21
22/* This is too messy with inline asm on the Sparc. */
23void __udelay(unsigned long usecs, unsigned long lpj);
24void __ndelay(unsigned long nsecs, unsigned long lpj);
25
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)
33
34#endif /* defined(__SPARC_DELAY_H) */