[net-next-2.6.git] / arch / sparc / include / asm / delay_32.h

/*
 * delay.h: Linux delay routines on the Sparc.
 *
 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu).
 */

#ifndef __SPARC_DELAY_H
#define __SPARC_DELAY_H

#include <asm/cpudata.h>

static inline void __delay(unsigned long loops)
{
	__asm__ __volatile__("cmp %0, 0\n\t"
			     "1: bne 1b\n\t"
			     "subcc %0, 1, %0\n" :
			     "=&r" (loops) :
			     "0" (loops) :
			     "cc");
}

/* This is too messy with inline asm on the Sparc. */
extern void __udelay(unsigned long usecs, unsigned long lpj);
extern void __ndelay(unsigned long nsecs, unsigned long lpj);

#ifdef CONFIG_SMP
#define __udelay_val	cpu_data(smp_processor_id()).udelay_val
#else /* SMP */
#define __udelay_val	loops_per_jiffy
#endif /* SMP */
#define udelay(__usecs)	__udelay(__usecs, __udelay_val)
#define ndelay(__nsecs)	__ndelay(__nsecs, __udelay_val)

#endif /* defined(__SPARC_DELAY_H) */
Commit	Line	Data
f5e706ad SR	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
	12	static 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. */
	23	extern void __udelay(unsigned long usecs, unsigned long lpj);
	24	extern void __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) */