1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * delay.h: Linux delay routines on the Sparc. 4 * 5 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu). 6 */ 7 8 #ifndef __SPARC_DELAY_H 9 #define __SPARC_DELAY_H 10 11 #include <asm/cpudata.h> 12 __delay(unsigned long loops)13static inline void __delay(unsigned long loops) 14 { 15 __asm__ __volatile__("cmp %0, 0\n\t" 16 "1: bne 1b\n\t" 17 "subcc %0, 1, %0\n" : 18 "=&r" (loops) : 19 "0" (loops) : 20 "cc"); 21 } 22 23 /* This is too messy with inline asm on the Sparc. */ 24 void __udelay(unsigned long usecs, unsigned long lpj); 25 void __ndelay(unsigned long nsecs, unsigned long lpj); 26 27 #ifdef CONFIG_SMP 28 #define __udelay_val cpu_data(smp_processor_id()).udelay_val 29 #else /* SMP */ 30 #define __udelay_val loops_per_jiffy 31 #endif /* SMP */ 32 #define udelay(__usecs) __udelay(__usecs, __udelay_val) 33 #define ndelay(__nsecs) __ndelay(__nsecs, __udelay_val) 34 35 #endif /* defined(__SPARC_DELAY_H) */ 36