diff options
Diffstat (limited to 'include/asm-x86_64/delay.h')
| -rw-r--r-- | include/asm-x86_64/delay.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/asm-x86_64/delay.h b/include/asm-x86_64/delay.h new file mode 100644 index 000000000000..65f64acc5319 --- /dev/null +++ b/include/asm-x86_64/delay.h @@ -0,0 +1,27 @@ +#ifndef _X8664_DELAY_H +#define _X8664_DELAY_H + +/* + * Copyright (C) 1993 Linus Torvalds + * + * Delay routines calling functions in arch/x86_64/lib/delay.c + */ + +extern void __bad_udelay(void); +extern void __bad_ndelay(void); + +extern void __udelay(unsigned long usecs); +extern void __ndelay(unsigned long usecs); +extern void __const_udelay(unsigned long usecs); +extern void __delay(unsigned long loops); + +#define udelay(n) (__builtin_constant_p(n) ? \ + ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \ + __udelay(n)) + +#define ndelay(n) (__builtin_constant_p(n) ? \ + ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \ + __ndelay(n)) + + +#endif /* defined(_X8664_DELAY_H) */ |