diff options
Diffstat (limited to 'include/asm-ppc/time.h')
| -rw-r--r-- | include/asm-ppc/time.h | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/include/asm-ppc/time.h b/include/asm-ppc/time.h deleted file mode 100644 index 81dbcd43a50..00000000000 --- a/include/asm-ppc/time.h +++ /dev/null @@ -1,161 +0,0 @@ -/* - * Common time prototypes and such for all ppc machines. - * - * Written by Cort Dougan (cort@fsmlabs.com) to merge - * Paul Mackerras' version and mine for PReP and Pmac. - */ - -#ifdef __KERNEL__ -#ifndef __ASM_TIME_H__ -#define __ASM_TIME_H__ - -#include <linux/types.h> -#include <linux/rtc.h> -#include <linux/threads.h> - -#include <asm/reg.h> - -/* time.c */ -extern unsigned tb_ticks_per_jiffy; -extern unsigned tb_to_us; -extern unsigned tb_last_stamp; -extern unsigned long disarm_decr[NR_CPUS]; - -extern void to_tm(int tim, struct rtc_time * tm); -extern time_t last_rtc_update; - -extern void set_dec_cpu6(unsigned int val); - -int via_calibrate_decr(void); - -/* Accessor functions for the decrementer register. - * The 4xx doesn't even have a decrementer. I tried to use the - * generic timer interrupt code, which seems OK, with the 4xx PIT - * in auto-reload mode. The problem is PIT stops counting when it - * hits zero. If it would wrap, we could use it just like a decrementer. - */ -static __inline__ unsigned int get_dec(void) -{ -#if defined(CONFIG_40x) - return (mfspr(SPRN_PIT)); -#else - return (mfspr(SPRN_DEC)); -#endif -} - -static __inline__ void set_dec(unsigned int val) -{ -#if defined(CONFIG_40x) - return; /* Have to let it auto-reload */ -#elif defined(CONFIG_8xx_CPU6) - set_dec_cpu6(val); -#else - mtspr(SPRN_DEC, val); -#endif -} - -/* Accessor functions for the timebase (RTC on 601) registers. */ -/* If one day CONFIG_POWER is added just define __USE_RTC as 1 */ -#ifdef CONFIG_6xx -extern __inline__ int __pure __USE_RTC(void) { - return (mfspr(SPRN_PVR)>>16) == 1; -} -#else -#define __USE_RTC() 0 -#endif - -extern __inline__ unsigned long get_tbl(void) { - unsigned long tbl; -#if defined(CONFIG_403GCX) - asm volatile("mfspr %0, 0x3dd" : "=r" (tbl)); -#else - asm volatile("mftb %0" : "=r" (tbl)); -#endif - return tbl; -} - -extern __inline__ unsigned long get_tbu(void) { - unsigned long tbl; -#if defined(CONFIG_403GCX) - asm volatile("mfspr %0, 0x3dc" : "=r" (tbl)); -#else - asm volatile("mftbu %0" : "=r" (tbl)); -#endif - return tbl; -} - -extern __inline__ void set_tb(unsigned int upper, unsigned int lower) -{ - mtspr(SPRN_TBWL, 0); - mtspr(SPRN_TBWU, upper); - mtspr(SPRN_TBWL, lower); -} - -extern __inline__ unsigned long get_rtcl(void) { - unsigned long rtcl; - asm volatile("mfrtcl %0" : "=r" (rtcl)); - return rtcl; -} - -extern __inline__ unsigned long get_rtcu(void) -{ - unsigned long rtcu; - asm volatile("mfrtcu %0" : "=r" (rtcu)); - return rtcu; -} - -extern __inline__ unsigned get_native_tbl(void) { - if (__USE_RTC()) - return get_rtcl(); - else - return get_tbl(); -} - -/* On machines with RTC, this function can only be used safely - * after the timestamp and for 1 second. It is only used by gettimeofday - * however so it should not matter. - */ -extern __inline__ unsigned tb_ticks_since(unsigned tstamp) { - if (__USE_RTC()) { - int delta = get_rtcl() - tstamp; - return delta<0 ? delta + 1000000000 : delta; - } else { - return get_tbl() - tstamp; - } -} - -#if 0 -extern __inline__ unsigned long get_bin_rtcl(void) { - unsigned long rtcl, rtcu1, rtcu2; - asm volatile("\ -1: mfrtcu %0\n\ - mfrtcl %1\n\ - mfrtcu %2\n\ - cmpw %0,%2\n\ - bne- 1b\n" - : "=r" (rtcu1), "=r" (rtcl), "=r" (rtcu2) - : : "cr0"); - return rtcu2*1000000000+rtcl; -} - -extern __inline__ unsigned binary_tbl(void) { - if (__USE_RTC()) - return get_bin_rtcl(); - else - return get_tbl(); -} -#endif - -/* Use mulhwu to scale processor timebase to timeval */ -/* Specifically, this computes (x * y) / 2^32. -- paulus */ -#define mulhwu(x,y) \ -({unsigned z; asm ("mulhwu %0,%1,%2" : "=r" (z) : "r" (x), "r" (y)); z;}) - -unsigned mulhwu_scale_factor(unsigned, unsigned); - -#define account_process_vtime(tsk) do { } while (0) -#define calculate_steal_time() do { } while (0) -#define snapshot_timebases() do { } while (0) - -#endif /* __ASM_TIME_H__ */ -#endif /* __KERNEL__ */ |