blob: f9200a65c632b9421d02b16106feded2eb3eb4eb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
#ifndef _ASM_POWERPC_DELAY_H
#define _ASM_POWERPC_DELAY_H
#ifdef __KERNEL__
/*
* Copyright 1996, Paul Mackerras.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* PPC64 Support added by Dave Engebretsen, Todd Inglett, Mike Corrigan,
* Anton Blanchard.
*/
extern void __delay(unsigned long loops);
extern void udelay(unsigned long usecs);
/*
* On shared processor machines the generic implementation of mdelay can
* result in large errors. While each iteration of the loop inside mdelay
* is supposed to take 1ms, the hypervisor could sleep our partition for
* longer (eg 10ms). With the right timing these errors can add up.
*
* Since there is no 32bit overflow issue on 64bit kernels, just call
* udelay directly.
*/
#ifdef CONFIG_PPC64
#define mdelay(n) udelay((n) * 1000)
#endif
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_DELAY_H */
|
