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/param.h>
15#include <asm/cpudata.h>
16
17#ifndef __ASSEMBLY__
18
19extern void __bad_udelay(void);
20extern void __bad_ndelay(void);
21
22extern void __udelay(unsigned long usecs);
23extern void __ndelay(unsigned long nsecs);
24extern void __const_udelay(unsigned long usecs);
25extern void __delay(unsigned long loops);
26
27#define udelay(n) (__builtin_constant_p(n) ? \
28	((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \
29	__udelay(n))
30
31#define ndelay(n) (__builtin_constant_p(n) ? \
32	((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
33	__ndelay(n))
34
35#endif /* !__ASSEMBLY__ */
36
37#endif /* defined(__SPARC64_DELAY_H) */
38