mirror of https://gitee.com/openkylin/linux.git
39 lines
992 B
C
39 lines
992 B
C
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/* delay.h: Linux delay routines on sparc64.
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*
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* Copyright (C) 1996, 2004 David S. Miller (davem@davemloft.net).
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*
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* Based heavily upon x86 variant which is:
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* Copyright (C) 1993 Linus Torvalds
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*
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* Delay routines calling functions in arch/sparc64/lib/delay.c
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*/
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#ifndef __SPARC64_DELAY_H
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#define __SPARC64_DELAY_H
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#include <linux/config.h>
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#include <linux/param.h>
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#include <asm/cpudata.h>
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#ifndef __ASSEMBLY__
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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 __const_udelay(unsigned long usecs);
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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() : __const_udelay((n) * 0x10c7ul)) : \
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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() : __const_udelay((n) * 5ul)) : \
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__ndelay(n))
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#endif /* !__ASSEMBLY__ */
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#endif /* defined(__SPARC64_DELAY_H) */
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