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authorStephen Rothwell <sfr@canb.auug.org.au>2008-08-01 01:20:30 -0400
committerPaul Mackerras <paulus@samba.org>2008-08-03 22:02:00 -0400
commitb8b572e1015f81b4e748417be2629dfe51ab99f9 (patch)
tree7df58667d5ed71d6c8f8f4ce40ca16b6fb776d0b /arch/powerpc/include/asm/timex.h
parent2b12a4c524812fb3f6ee590a02e65b95c8c32229 (diff)
powerpc: Move include files to arch/powerpc/include/asm
from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where <asm-powepc/...> was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/include/asm/timex.h')
-rw-r--r--arch/powerpc/include/asm/timex.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/timex.h b/arch/powerpc/include/asm/timex.h
new file mode 100644
index 000000000000..c55e14f7ef44
--- /dev/null
+++ b/arch/powerpc/include/asm/timex.h
@@ -0,0 +1,50 @@
1#ifndef _ASM_POWERPC_TIMEX_H
2#define _ASM_POWERPC_TIMEX_H
3
4#ifdef __KERNEL__
5
6/*
7 * PowerPC architecture timex specifications
8 */
9
10#include <asm/cputable.h>
11#include <asm/reg.h>
12
13#define CLOCK_TICK_RATE 1024000 /* Underlying HZ */
14
15typedef unsigned long cycles_t;
16
17static inline cycles_t get_cycles(void)
18{
19#ifdef __powerpc64__
20 return mftb();
21#else
22 cycles_t ret;
23
24 /*
25 * For the "cycle" counter we use the timebase lower half.
26 * Currently only used on SMP.
27 */
28
29 ret = 0;
30
31 __asm__ __volatile__(
32 "97: mftb %0\n"
33 "99:\n"
34 ".section __ftr_fixup,\"a\"\n"
35 ".align 2\n"
36 "98:\n"
37 " .long %1\n"
38 " .long 0\n"
39 " .long 97b-98b\n"
40 " .long 99b-98b\n"
41 " .long 0\n"
42 " .long 0\n"
43 ".previous"
44 : "=r" (ret) : "i" (CPU_FTR_601));
45 return ret;
46#endif
47}
48
49#endif /* __KERNEL__ */
50#endif /* _ASM_POWERPC_TIMEX_H */