diff options
Diffstat (limited to 'include/asm-sparc/delay.h')
| -rw-r--r-- | include/asm-sparc/delay.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/asm-sparc/delay.h b/include/asm-sparc/delay.h new file mode 100644 index 000000000000..6edf2cbb246b --- /dev/null +++ b/include/asm-sparc/delay.h @@ -0,0 +1,35 @@ +/* $Id: delay.h,v 1.11 2001/01/01 01:46:15 davem Exp $ + * 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 <linux/config.h> +#include <asm/cpudata.h> + +extern __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. */ +extern void __udelay(unsigned long usecs, unsigned long lpj); +extern 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) */ |