android_kernel_xiaomi_sm8350/include/asm-powerpc/timex.h
jdl@freescale.com dd56fdf23d [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>
2005-09-09 22:11:35 +10:00

50 lines
802 B
C

#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 */