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1/* delay.h: Linux delay routines on sparc64.
2 *
3 * Copyright (C) 1996, 2004 David S. Miller (davem@davemloft.net).
4 *
5 * Based heavily upon x86 variant which is:
6 * Copyright (C) 1993 Linus Torvalds
7 *
8 * Delay routines calling functions in arch/sparc64/lib/delay.c
9 */
10
11#ifndef __SPARC64_DELAY_H
12#define __SPARC64_DELAY_H
13
14#include <linux/config.h>
15#include <linux/param.h>
16#include <asm/cpudata.h>
17
18#ifndef __ASSEMBLY__
19
20extern void __bad_udelay(void);
21extern void __bad_ndelay(void);
22
23extern void __udelay(unsigned long usecs);
24extern void __ndelay(unsigned long nsecs);
25extern void __const_udelay(unsigned long usecs);
26extern void __delay(unsigned long loops);
27
28#define udelay(n) (__builtin_constant_p(n) ? \
29 ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \
30 __udelay(n))
31
32#define ndelay(n) (__builtin_constant_p(n) ? \
33 ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
34 __ndelay(n))
35
36#endif /* !__ASSEMBLY__ */
37
38#endif /* defined(__SPARC64_DELAY_H) */