arch/sh/lib64/udelay.c

   1 /*
   2  * arch/sh/lib64/udelay.c
   3  *
   4  * Delay routines, using a pre-computed "loops_per_jiffy" value.
   5  *
   6  * Copyright (C) 2000, 2001  Paolo Alberelli
   7  * Copyright (C) 2003, 2004  Paul Mundt
   8  *
   9  * This file is subject to the terms and conditions of the GNU General Public
  10  * License.  See the file "COPYING" in the main directory of this archive
  11  * for more details.
  12  */
  13 #include <linux/sched.h>
  14 #include <asm/param.h>
  15
  16 /*
  17  * Use only for very small delays (< 1 msec).
  18  *
  19  * The active part of our cycle counter is only 32-bits wide, and
  20  * we're treating the difference between two marks as signed.  On
  21  * a 1GHz box, that's about 2 seconds.
  22  */
  23
  24 <<<<<<< HEAD:arch/sh/lib64/udelay.c
  25 void __delay(int loops)
  26 =======
  27 void __delay(unsigned long loops)
  28 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/sh/lib64/udelay.c
  29 {
  30         long long dummy;
  31         __asm__ __volatile__("gettr     tr0, %1\n\t"
  32                              "pta       $+4, tr0\n\t"
  33                              "addi      %0, -1, %0\n\t"
  34                              "bne       %0, r63, tr0\n\t"
  35                              "ptabs     %1, tr0\n\t":"=r"(loops),
  36                              "=r"(dummy)
  37                              :"0"(loops));
  38 }
  39
  40 <<<<<<< HEAD:arch/sh/lib64/udelay.c
  41 void __udelay(unsigned long long usecs, unsigned long lpj)
  42 =======
  43 inline void __const_udelay(unsigned long xloops)
  44 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/sh/lib64/udelay.c
  45 {
  46 <<<<<<< HEAD:arch/sh/lib64/udelay.c
  47         usecs *= (((unsigned long long) HZ << 32) / 1000000) * lpj;
  48         __delay((long long) usecs >> 32);
  49 =======
  50         __delay(xloops * (HZ * cpu_data[raw_smp_processor_id()].loops_per_jiffy));
  51 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/sh/lib64/udelay.c
  52 }
  53
  54 <<<<<<< HEAD:arch/sh/lib64/udelay.c
  55 void __ndelay(unsigned long long nsecs, unsigned long lpj)
  56 =======
  57 void __udelay(unsigned long usecs)
  58 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/sh/lib64/udelay.c
  59 {
  60 <<<<<<< HEAD:arch/sh/lib64/udelay.c
  61         nsecs *= (((unsigned long long) HZ << 32) / 1000000000) * lpj;
  62         __delay((long long) nsecs >> 32);
  63 =======
  64         __const_udelay(usecs * 0x000010c6);  /* 2**32 / 1000000 */
  65 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/sh/lib64/udelay.c
  66 }
  67
  68 <<<<<<< HEAD:arch/sh/lib64/udelay.c
  69 void udelay(unsigned long usecs)
  70 =======
  71 void __ndelay(unsigned long nsecs)
  72 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/sh/lib64/udelay.c
  73 {
  74 <<<<<<< HEAD:arch/sh/lib64/udelay.c
  75         __udelay(usecs, cpu_data[raw_smp_processor_id()].loops_per_jiffy);
  76 }
  77
  78 void ndelay(unsigned long nsecs)
  79 {
  80         __ndelay(nsecs, cpu_data[raw_smp_processor_id()].loops_per_jiffy);
  81 =======
  82         __const_udelay(nsecs * 0x00000005);
  83 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/sh/lib64/udelay.c
  84 }