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/*
* Copyright (C) 2000 FSM Labs (http://www.fsmlabs.com/)
* Written by Cort Dougan <cort@fsmlabs.com>
*
*/
#ifndef __RTL_ARCH_TIME_H__
#define __RTL_ARCH_TIME_H__
extern unsigned long loops_per_sec;
typedef 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 = (ts->tv_sec * NSECS_PER_SEC) + ts->tv_nsec;
return t;
}
static inline struct timespec timespec_from_ns (hrtime_t t)
{
struct timespec ts;
ts.tv_sec = t/NSECS_PER_SEC;
ts.tv_nsec = t%NSECS_PER_SEC;
return ts;
}
#define rdtscl(x) __asm__ __volatile__ ("rpcc %0" : "=r" (x))
extern hrtime_t gethrtime(void); /* time in nanoseconds since bootup */
extern hrtime_t gethrtimeres(void); /* resolution of gethrtime() in ns */
struct rtl_clock_arch {
int istimerset;
int count_irqs;
};
#define RTL_CLOCK_ARCH_INITIALIZER { 0, 0 }
extern __inline__ void __delay(unsigned int loops)
{
int tmp;
__asm__ __volatile__(
" rpcc %0\n"
" addl %1,%0,%1\n"
"1: rpcc %0\n"
" subl %1,%0,%0\n"
" bgt %0,1b"
: "=&r" (tmp), "=r" (loops) : "1"(loops));
}
static inline void rtl_delay(long nanoseconds)
{
nanoseconds *= ((1UL << 32) / 10000000) * loops_per_sec;
__delay((long)nanoseconds >> 32);
}
#endif
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