diff options
author | Kyle McMartin <kyle@mcmartin.ca> | 2008-07-28 23:02:13 -0400 |
---|---|---|
committer | Kyle McMartin <kyle@hera.kernel.org> | 2008-10-10 12:32:29 -0400 |
commit | deae26bf6a10e47983606f5df080b91e97650ead (patch) | |
tree | 84a8a68145d0f713d7c5a1f9e6b3b03be9b3a4c8 /arch/parisc/include/asm/delay.h | |
parent | 6c86cb8237bf08443806089130dc108051569a93 (diff) |
parisc: move include/asm-parisc to arch/parisc/include/asm
Diffstat (limited to 'arch/parisc/include/asm/delay.h')
-rw-r--r-- | arch/parisc/include/asm/delay.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/delay.h b/arch/parisc/include/asm/delay.h new file mode 100644 index 000000000000..7a75e984674b --- /dev/null +++ b/arch/parisc/include/asm/delay.h | |||
@@ -0,0 +1,43 @@ | |||
1 | #ifndef _PARISC_DELAY_H | ||
2 | #define _PARISC_DELAY_H | ||
3 | |||
4 | #include <asm/system.h> /* for mfctl() */ | ||
5 | #include <asm/processor.h> /* for boot_cpu_data */ | ||
6 | |||
7 | |||
8 | /* | ||
9 | * Copyright (C) 1993 Linus Torvalds | ||
10 | * | ||
11 | * Delay routines | ||
12 | */ | ||
13 | |||
14 | static __inline__ void __delay(unsigned long loops) { | ||
15 | asm volatile( | ||
16 | " .balignl 64,0x34000034\n" | ||
17 | " addib,UV -1,%0,.\n" | ||
18 | " nop\n" | ||
19 | : "=r" (loops) : "0" (loops)); | ||
20 | } | ||
21 | |||
22 | static __inline__ void __cr16_delay(unsigned long clocks) { | ||
23 | unsigned long start; | ||
24 | |||
25 | /* | ||
26 | * Note: Due to unsigned math, cr16 rollovers shouldn't be | ||
27 | * a problem here. However, on 32 bit, we need to make sure | ||
28 | * we don't pass in too big a value. The current default | ||
29 | * value of MAX_UDELAY_MS should help prevent this. | ||
30 | */ | ||
31 | |||
32 | start = mfctl(16); | ||
33 | while ((mfctl(16) - start) < clocks) | ||
34 | ; | ||
35 | } | ||
36 | |||
37 | static __inline__ void __udelay(unsigned long usecs) { | ||
38 | __cr16_delay(usecs * ((unsigned long)boot_cpu_data.cpu_hz / 1000000UL)); | ||
39 | } | ||
40 | |||
41 | #define udelay(n) __udelay(n) | ||
42 | |||
43 | #endif /* defined(_PARISC_DELAY_H) */ | ||