diff options
| author | jdl@freescale.com <jdl@freescale.com> | 2005-09-07 15:59:48 -0500 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-09-09 22:11:35 +1000 |
| commit | dd56fdf23dfa0127d512b73d4238dbd2b5a7c1eb (patch) | |
| tree | 59f952b87d4bec5f11c578a384c3aaa2ddf5860d /include/asm-powerpc/timex.h | |
| parent | 64807081e38703617cf9a5d71db14ea2b3e1cb04 (diff) | |
[PATCH] powerpc: Merge a few more include files
Merge a few asm-ppc and asm-ppc64 header files.
Note: the merge of setup.h intentionally does not carry
forward the m68k cruft. That means this patch continues
to break the already broken amiga on the ppc32.
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/timex.h')
| -rw-r--r-- | include/asm-powerpc/timex.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/include/asm-powerpc/timex.h b/include/asm-powerpc/timex.h new file mode 100644 index 000000000000..51c5b316be55 --- /dev/null +++ b/include/asm-powerpc/timex.h @@ -0,0 +1,49 @@ +#ifndef _ASM_POWERPC_TIMEX_H +#define _ASM_POWERPC_TIMEX_H + +#ifdef __KERNEL__ + +/* + * PowerPC architecture timex specifications + */ + +#include <linux/config.h> +#include <asm/cputable.h> + +#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ + +typedef unsigned long cycles_t; + +static inline cycles_t get_cycles(void) +{ + cycles_t ret; + +#ifdef __powerpc64__ + + __asm__ __volatile__("mftb %0" : "=r" (ret) : ); + +#else + /* + * For the "cycle" counter we use the timebase lower half. + * Currently only used on SMP. + */ + + ret = 0; + + __asm__ __volatile__( + "98: mftb %0\n" + "99:\n" + ".section __ftr_fixup,\"a\"\n" + " .long %1\n" + " .long 0\n" + " .long 98b\n" + " .long 99b\n" + ".previous" + : "=r" (ret) : "i" (CPU_FTR_601)); +#endif + + return ret; +} + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_TIMEX_H */ |