1 /* 2 * delay.h: Linux delay routines on the Sparc. 3 * 4 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu). 5 */ 6 7 #ifndef __SPARC_DELAY_H 8 #define __SPARC_DELAY_H 9 10 #include <asm/cpudata.h> 11 12 static inline void __delay(unsigned long loops) 13 { 14 __asm__ __volatile__("cmp %0, 0\n\t" 15 "1: bne 1b\n\t" 16 "subcc %0, 1, %0\n" : 17 "=&r" (loops) : 18 "0" (loops) : 19 "cc"); 20 } 21 22 /* This is too messy with inline asm on the Sparc. */ 23 void __udelay(unsigned long usecs, unsigned long lpj); 24 void __ndelay(unsigned long nsecs, unsigned long lpj); 25 26 #ifdef CONFIG_SMP 27 #define __udelay_val cpu_data(smp_processor_id()).udelay_val 28 #else /* SMP */ 29 #define __udelay_val loops_per_jiffy 30 #endif /* SMP */ 31 #define udelay(__usecs) __udelay(__usecs, __udelay_val) 32 #define ndelay(__nsecs) __ndelay(__nsecs, __udelay_val) 33 34 #endif /* defined(__SPARC_DELAY_H) */ 35