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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _I386_DELAY_H |
| 2 | #define _I386_DELAY_H |
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| 3 | |||
| 4 | /* |
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| 5 | * Copyright (C) 1993 Linus Torvalds |
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| 6 | * |
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| 7 | * Delay routines calling functions in arch/i386/lib/delay.c |
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| 8 | */ |
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| 9 | |||
| 10 | extern void __bad_udelay(void); |
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| 11 | extern void __bad_ndelay(void); |
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| 12 | |||
| 13 | extern void __udelay(unsigned long usecs); |
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| 14 | extern void __ndelay(unsigned long nsecs); |
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| 15 | extern void __const_udelay(unsigned long usecs); |
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| 16 | extern void __delay(unsigned long loops); |
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| 17 | |||
| 18 | #define udelay(n) (__builtin_constant_p(n) ? \ |
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| 19 | ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \ |
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| 20 | __udelay(n)) |
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| 21 | |||
| 22 | #define ndelay(n) (__builtin_constant_p(n) ? \ |
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| 23 | ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \ |
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| 24 | __ndelay(n)) |
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| 25 | |||
| 26 | #endif /* defined(_I386_DELAY_H) */ |