release/src-rt-6.x.4708/linux/linux-2.6.36/arch/cris/include/arch-v32/arch/delay.h

   1 #ifndef _ASM_CRIS_ARCH_DELAY_H
   2 #define _ASM_CRIS_ARCH_DELAY_H
   3
   4 extern void cris_delay10ns(u32 n10ns);
   5 #define udelay(u) cris_delay10ns((u)*100)
   6 #define ndelay(n) cris_delay10ns(((n)+9)/10)
   7
   8 /*
   9  * Not used anymore for udelay or ndelay.  Referenced by
  10  * e.g. init/calibrate.c.  All other references are likely bugs;
  11  * should be replaced by mdelay, udelay or ndelay.
  12  */
  13
  14 static inline void
  15 __delay(int loops)
  16 {
  17         __asm__ __volatile__ (
  18                 "move.d %0, $r9\n\t"
  19                 "beq 2f\n\t"
  20                 "subq 1, $r9\n\t"
  21                 "1:\n\t"
  22                 "bne 1b\n\t"
  23                 "subq 1, $r9\n"
  24                 "2:"
  25                 : : "g" (loops) : "r9");
  26 }
  27
  28 #endif /* _ASM_CRIS_ARCH_DELAY_H */