| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* | |
| * delay.h: Linux delay routines on the Sparc. | |
| * | |
| * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu). | |
| */ | |
| #ifndef __SPARC_DELAY_H | |
| #define __SPARC_DELAY_H | |
| #include <asm/cpudata.h> | |
| static inline void __delay(unsigned long loops) | |
| { | |
| __asm__ __volatile__("cmp %0, 0\n\t" | |
| "1: bne 1b\n\t" | |
| "subcc %0, 1, %0\n" : | |
| "=&r" (loops) : | |
| "0" (loops) : | |
| "cc"); | |
| } | |
| /* This is too messy with inline asm on the Sparc. */ | |
| void __udelay(unsigned long usecs, unsigned long lpj); | |
| void __ndelay(unsigned long nsecs, unsigned long lpj); | |
| #ifdef CONFIG_SMP | |
| #define __udelay_val cpu_data(smp_processor_id()).udelay_val | |
| #else /* SMP */ | |
| #define __udelay_val loops_per_jiffy | |
| #endif /* SMP */ | |
| #define udelay(__usecs) __udelay(__usecs, __udelay_val) | |
| #define ndelay(__nsecs) __ndelay(__nsecs, __udelay_val) | |
| #endif /* defined(__SPARC_DELAY_H) */ |