mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
77ef50a522
This patch is the result of an automatic script that consolidates the format of all the headers in include/asm-x86/. The format: 1. No leading underscore. Names with leading underscores are reserved. 2. Pathname components are separated by two underscores. So we can distinguish between mm_types.h and mm/types.h. 3. Everything except letters and numbers are turned into single underscores. Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
32 lines
860 B
C
32 lines
860 B
C
#ifndef ASM_X86__DELAY_H
|
|
#define ASM_X86__DELAY_H
|
|
|
|
/*
|
|
* Copyright (C) 1993 Linus Torvalds
|
|
*
|
|
* Delay routines calling functions in arch/x86/lib/delay.c
|
|
*/
|
|
|
|
/* Undefined functions to get compile-time errors */
|
|
extern void __bad_udelay(void);
|
|
extern void __bad_ndelay(void);
|
|
|
|
extern void __udelay(unsigned long usecs);
|
|
extern void __ndelay(unsigned long nsecs);
|
|
extern void __const_udelay(unsigned long xloops);
|
|
extern void __delay(unsigned long loops);
|
|
|
|
/* 0x10c7 is 2**32 / 1000000 (rounded up) */
|
|
#define udelay(n) (__builtin_constant_p(n) ? \
|
|
((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \
|
|
__udelay(n))
|
|
|
|
/* 0x5 is 2**32 / 1000000000 (rounded up) */
|
|
#define ndelay(n) (__builtin_constant_p(n) ? \
|
|
((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
|
|
__ndelay(n))
|
|
|
|
void use_tsc_delay(void);
|
|
|
|
#endif /* ASM_X86__DELAY_H */
|