diff options
Diffstat (limited to 'include/asm-ppc64/delay.h')
-rw-r--r-- | include/asm-ppc64/delay.h | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/include/asm-ppc64/delay.h b/include/asm-ppc64/delay.h deleted file mode 100644 index 05f198cf73d9..000000000000 --- a/include/asm-ppc64/delay.h +++ /dev/null | |||
@@ -1,48 +0,0 @@ | |||
1 | #ifndef _PPC64_DELAY_H | ||
2 | #define _PPC64_DELAY_H | ||
3 | |||
4 | /* | ||
5 | * Copyright 1996, Paul Mackerras. | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or | ||
8 | * modify it under the terms of the GNU General Public License | ||
9 | * as published by the Free Software Foundation; either version | ||
10 | * 2 of the License, or (at your option) any later version. | ||
11 | * | ||
12 | * PPC64 Support added by Dave Engebretsen, Todd Inglett, Mike Corrigan, | ||
13 | * Anton Blanchard. | ||
14 | */ | ||
15 | |||
16 | extern unsigned long tb_ticks_per_usec; | ||
17 | |||
18 | /* define these here to prevent circular dependencies */ | ||
19 | #define __HMT_low() asm volatile("or 1,1,1") | ||
20 | #define __HMT_medium() asm volatile("or 2,2,2") | ||
21 | #define __barrier() asm volatile("":::"memory") | ||
22 | |||
23 | static inline unsigned long __get_tb(void) | ||
24 | { | ||
25 | unsigned long rval; | ||
26 | |||
27 | asm volatile("mftb %0" : "=r" (rval)); | ||
28 | return rval; | ||
29 | } | ||
30 | |||
31 | static inline void __delay(unsigned long loops) | ||
32 | { | ||
33 | unsigned long start = __get_tb(); | ||
34 | |||
35 | while((__get_tb()-start) < loops) | ||
36 | __HMT_low(); | ||
37 | __HMT_medium(); | ||
38 | __barrier(); | ||
39 | } | ||
40 | |||
41 | static inline void udelay(unsigned long usecs) | ||
42 | { | ||
43 | unsigned long loops = tb_ticks_per_usec * usecs; | ||
44 | |||
45 | __delay(loops); | ||
46 | } | ||
47 | |||
48 | #endif /* _PPC64_DELAY_H */ | ||