projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _X8664_DELAY_H |
| 2 | #define _X8664_DELAY_H | |
| 3 | ||
| 4 | /* | |
| 5 | * Copyright (C) 1993 Linus Torvalds | |
| 6 | * | |
| 7 | * Delay routines calling functions in arch/x86_64/lib/delay.c | |
| 8 | */ | |
| 9 | ||
| 10 | extern void __bad_udelay(void); | |
| 11 | extern void __bad_ndelay(void); | |
| 12 | ||
| 13 | extern void __udelay(unsigned long usecs); | |
| 14 | extern void __ndelay(unsigned long usecs); | |
| 15 | extern void __const_udelay(unsigned long usecs); | |
| 16 | extern void __delay(unsigned long loops); | |
| 17 | ||
| 18 | #define udelay(n) (__builtin_constant_p(n) ? \ | |
| b9a8d94a | 19 | ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \ |
| 1da177e4 LT |
20 | __udelay(n)) |
| 21 | ||
| 22 | #define ndelay(n) (__builtin_constant_p(n) ? \ | |
| 23 | ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \ | |
| 24 | __ndelay(n)) | |
| 25 | ||
| 26 | ||
| 27 | #endif /* defined(_X8664_DELAY_H) */ |