From bb8985586b7a906e116db835c64773b7a7d51663 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 17 Aug 2008 21:05:42 -0400 Subject: x86, um: ... and asm-x86 move Signed-off-by: Al Viro Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/delay.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 arch/x86/include/asm/delay.h (limited to 'arch/x86/include/asm/delay.h') diff --git a/arch/x86/include/asm/delay.h b/arch/x86/include/asm/delay.h new file mode 100644 index 000000000000..8a0da95b4fc5 --- /dev/null +++ b/arch/x86/include/asm/delay.h @@ -0,0 +1,31 @@ +#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 */ -- cgit v1.2.3-58-ga151