| /* |
| * linux/include/asm-ppc/timex.h |
| * |
| * ppc architecture timex specifications |
| */ |
| #ifdef __KERNEL__ |
| #ifndef _ASMppc_TIMEX_H |
| #define _ASMppc_TIMEX_H |
| |
| #include <linux/config.h> |
| #include <asm/cputable.h> |
| |
| #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ |
| #define CLOCK_TICK_FACTOR 20 /* Factor of both 1000000 and CLOCK_TICK_RATE */ |
| #define FINETUNE ((((((long)LATCH * HZ - CLOCK_TICK_RATE) << SHIFT_HZ) * \ |
| (1000000/CLOCK_TICK_FACTOR) / (CLOCK_TICK_RATE/CLOCK_TICK_FACTOR)) \ |
| << (SHIFT_SCALE-SHIFT_HZ)) / HZ) |
| |
| typedef unsigned long cycles_t; |
| |
| /* |
| * For the "cycle" counter we use the timebase lower half. |
| * Currently only used on SMP. |
| */ |
| |
| extern cycles_t cacheflush_time; |
| |
| static inline cycles_t get_cycles(void) |
| { |
| cycles_t 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)); |
| return ret; |
| } |
| |
| #endif |
| |
| #define vxtime_lock() do {} while (0) |
| #define vxtime_unlock() do {} while (0) |
| |
| #endif /* __KERNEL__ */ |
