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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/tile/include/asm/delay.h
10819 views
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/*

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 * Copyright 2010 Tilera Corporation. All Rights Reserved.

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 *

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 *   This program is free software; you can redistribute it and/or

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 *   modify it under the terms of the GNU General Public License

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 *   as published by the Free Software Foundation, version 2.

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 *

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 *   This program is distributed in the hope that it will be useful, but

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 *   WITHOUT ANY WARRANTY; without even the implied warranty of

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 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or

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 *   NON INFRINGEMENT.  See the GNU General Public License for

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 *   more details.

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 */

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#ifndef _ASM_TILE_DELAY_H

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#define _ASM_TILE_DELAY_H

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/* Undefined functions to get compile-time errors. */

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extern void __bad_udelay(void);

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extern void __bad_ndelay(void);

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extern void __udelay(unsigned long usecs);

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extern void __ndelay(unsigned long nsecs);

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extern void __delay(unsigned long loops);

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#define udelay(n) (__builtin_constant_p(n) ? \

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	((n) > 20000 ? __bad_udelay() : __ndelay((n) * 1000)) : \

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	__udelay(n))

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#define ndelay(n) (__builtin_constant_p(n) ? \

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	((n) > 20000 ? __bad_ndelay() : __ndelay(n)) : \

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	__ndelay(n))

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#endif /* _ASM_TILE_DELAY_H */

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