1 #ifndef _PARISC_DELAY_H
2 #define _PARISC_DELAY_H
4 #include <asm/system.h> /* for mfctl() */
5 #include <asm/processor.h> /* for boot_cpu_data */
9 * Copyright (C) 1993 Linus Torvalds
14 static __inline__ void __delay(unsigned long loops) {
16 " .balignl 64,0x34000034\n"
19 : "=r" (loops) : "0" (loops));
22 static __inline__ void __cr16_delay(unsigned long clocks) {
26 * Note: Due to unsigned math, cr16 rollovers shouldn't be
27 * a problem here. However, on 32 bit, we need to make sure
28 * we don't pass in too big a value. The current default
29 * value of MAX_UDELAY_MS should help prevent this.
33 while ((mfctl(16) - start) < clocks)
37 static __inline__ void __udelay(unsigned long usecs) {
38 __cr16_delay(usecs * ((unsigned long)boot_cpu_data.cpu_hz / 1000000UL));
41 #define udelay(n) __udelay(n)
43 #endif /* defined(_PARISC_DELAY_H) */