diff options
Diffstat (limited to 'libgloss/sparc_leon/asm-leon/jiffies.h')
-rw-r--r-- | libgloss/sparc_leon/asm-leon/jiffies.h | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/libgloss/sparc_leon/asm-leon/jiffies.h b/libgloss/sparc_leon/asm-leon/jiffies.h deleted file mode 100644 index 60b0e2701..000000000 --- a/libgloss/sparc_leon/asm-leon/jiffies.h +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Copyright (c) 2011 Aeroflex Gaisler - * - * BSD license: - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - - -#ifndef _LINUX_JIFFIES_H -#define _LINUX_JIFFIES_H - -#include <asm-leon/types.h> -#include <asm-leon/clock.h> -#include <asm-leon/linkage.h> - -/* Suppose we want to devide two numbers NOM and DEN: NOM/DEN, the we can - * improve accuracy by shifting LSH bits, hence calculating: - * (NOM << LSH) / DEN - * This however means trouble for large NOM, because (NOM << LSH) may no - * longer fit in 32 bits. The following way of calculating this gives us - * some slack, under the following conditions: - * - (NOM / DEN) fits in (32 - LSH) bits. - * - (NOM % DEN) fits in (32 - LSH) bits. - */ -#define SH_DIV(NOM,DEN,LSH) ( ((NOM / DEN) << LSH) \ - + (((NOM % DEN) << LSH) + DEN / 2) / DEN) - -/* TICK_NSEC is the time between ticks in nsec assuming real ACTHZ */ -#define TICK_NSEC (SH_DIV (1000000UL * 1000, (HZ<<8), 8)) - -/* - * The 64-bit value is not volatile - you MUST NOT read it - * without sampling the sequence number in xtime_lock. - */ -extern u64 jiffies_64; -extern struct timespec xtime __attribute__ ((aligned (16))); -#define jiffies (*((unsigned long *)(((unsigned long)(&jiffies_64))+4))) - -/* - * These inlines deal with timer wrapping correctly. You are - * strongly encouraged to use them - * 1. Because people otherwise forget - * 2. Because if the timer wrap changes in future you won't have to - * alter your driver code. - * - * time_after(a,b) returns true if the time a is after time b. - * - * Do this with "<0" and ">=0" to only test the sign of the result. A - * good compiler would generate better code (and a really good compiler - * wouldn't care). Gcc is currently neither. - */ -#define time_after(a,b) \ - (typecheck(unsigned long, a) && \ - typecheck(unsigned long, b) && \ - ((long)(b) - (long)(a) < 0)) -#define time_before(a,b) time_after(b,a) - -#define time_after_eq(a,b) \ - (typecheck(unsigned long, a) && \ - typecheck(unsigned long, b) && \ - ((long)(a) - (long)(b) >= 0)) -#define time_before_eq(a,b) time_after_eq(b,a) - -/* - * Have the 32 bit jiffies value wrap 5 minutes after boot - * so jiffies wrap bugs show up earlier. - */ -#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ)) - -static inline void -set_normalized_timespec (struct timespec *ts, time_t sec, long nsec) -{ - while (nsec > NSEC_PER_SEC) - { - nsec -= NSEC_PER_SEC; - ++sec; - } - while (nsec < 0) - { - nsec += NSEC_PER_SEC; - --sec; - } - ts->tv_sec = sec; - ts->tv_nsec = nsec; -} - -#endif |