/* * Copyright (C) 1999 FSM Labs (http://www.fsmlabs.com/) *  Written by Cort Dougan <cort@fsmlabs.com> * */#ifndef __RTL_ARCH_TIME_H__#define __RTL_ARCH_TIME_H__typedef long long hrtime_t; /* high-resolution time type (signed 64-bit) */static inline hrtime_t timespec_to_ns (const struct timespec *ts){	hrtime_t t;	t = ((hrtime_t)ts->tv_sec * (hrtime_t)NSECS_PER_SEC) +		(hrtime_t)ts->tv_nsec;	return t;}static inline struct timespec timespec_from_ns (hrtime_t t){  	struct timespec ts;	/* We loose the upper 32-bits here -- Cort */	ts.tv_sec = (unsigned long)t/NSECS_PER_SEC;	ts.tv_nsec = (unsigned long)(t-(hrtime_t)ts.tv_sec *				     (hrtime_t)NSECS_PER_SEC);	return ts;}#define rdtscl(x) __asm__ __volatile__ ("mftb %0": "=r" (x))extern hrtime_t gethrtime(void); /* time in nanoseconds since bootup */extern hrtime_t gethrtimeres(void); /* resolution of gethrtime() in ns */#define RTL_CLOCK_ARCH_INITIALIZER { 0 }struct rtl_clock_arch {	int istimerset;};extern __inline__ void __delay(unsigned int loops){	if (loops != 0)		__asm__ __volatile__("mtctr %0; 1: bdnz 1b" : :				     "r" (loops) : "ctr");}static inline void rtl_delay(long nanoseconds){	unsigned long loops;	extern unsigned long loops_per_sec;		/* compute (usecs * 2^32 / 10^6) * loops_per_sec / 2^32 */	nanoseconds *= 0x10c6;		/* 2^32 / 10^6 */	__asm__("mulhwu %0,%1,%2" : "=r" (loops) :		"r" (nanoseconds), "r" (loops_per_sec));	__delay(loops/1000);}#endif