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1da177e4 LT |
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 | ||
1da177e4 LT |
14 | #include <linux/param.h> |
15 | #include <asm/cpudata.h> | |
16 | ||
17 | #ifndef __ASSEMBLY__ | |
18 | ||
19 | extern void __bad_udelay(void); | |
20 | extern void __bad_ndelay(void); | |
21 | ||
22 | extern void __udelay(unsigned long usecs); | |
23 | extern void __ndelay(unsigned long nsecs); | |
24 | extern void __const_udelay(unsigned long usecs); | |
25 | extern 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) */ |